National Research Council of Thailand Visit

Agenda for the National Research Council of Thailand's Visit to Florida International University on May 17 and 18, 2007.

National Council of Jewish Women conference

General note: Title and date provided by Bettye Lane.

Esther Landa, President of National Council of Jewish Women

General note: Title and date provided by Bettye Lane.

National Council of Jewish Women Older women workshop

General note: Title and date provided by Bettye Lane.

National Council of Neighborhood Women conference (business women)

General note: Title and date provided by Bettye Lane.

National Council of Neighborhood Women conference (business women)

General note: Title and date provided by Bettye Lane.

Factors affecting transition to second year of an engineering degree

Much research has focused on students’ transition from secondary school to university. Less is known about the transition from first to second year of a university degree programme. Given the difficulties that many students face at this stage of their education, research into the relevant factors is required. Through questionnaires and focus groups, views of second- and third-year aerospace and mechanical engineering students in our university have been gathered. A large majority believed that both the volume and difficulty of work increased in second year. Many stated that first year was slightly too trivial and could have been made more challenging to prepare them better for second year. Different teaching and assessment styles in second year were considered to affect attendance and performance. The survey revealed that students were generally very well settled into university life by the end of first year and were happy with their choice of course and only 23% reported that financial responsibilities have had a negative effect on their academic performance. Differences were observed between male and female students. Male students believed that transition was helped by having regular assessments and by worked examples in lectures. Females found the teaching staff were the most helpful factor for a successful transition. The results indicate that males require more structure and guidance whereas females are more independent and settle in better.

The priorities of the Polish presidency of the Council of the European Union

The paper discusses the Polish presidency of the EU Council in terms of its priorities. It analyzes the circumstances of their formulation, selection and implementation. The authors answer the question of what influenced the selection of Poland’s priorities and what selection mechanisms were applied. Additionally, they examine how the national agenda was ‘concealed’ in Community rhetoric. Thus, the analytical part discusses the political and legal path that determined the priorities. The EU agenda, Polish ambitions and the context of the trio is also presented. The paper concludes with the authors’ assessment of the implementation of the priorities.

A second century of ferns; being figures with brief descriptions of one hundred new, or rare, or imperfectly known species of ferns; from various parts of the world;

Mode of access: Internet.

Study of the second hyperpolarizability of poly(3-alkylthiophenes) using the third-harmonic scattering technique

During the past years, the considerable need in the domain of communications for more potent photonic devices has focused the research activities into the nonlinear optical (NLO) materials which can be used for modern optical switches. In this regard, a lot of research activities are focused on the organic materials and conjugated polymers which offer more advantages compared to the inorganic ones. On this matter, poly(3-alkylthiophene) (P3AT), an organic conjugated polymer, can be investigated as potential optical material with in particular the focus on the NLO properties such as the first- and second-hyperpolarizability, β and γ respectively. The activities carried out at the Laboratory of Polymer Synthesis of the KU Leuven, during the master's thesis work, focused on the study of conjugated polymers in order to evaluate their NLO properties for the future purpose of applications in optical systems. In particular, three series of polythiophenes functionalized with an alkyl side chain in the 3-position were synthesized: poly(3-hexylthiophene) (P3HT), poly[3-(2-ethylhexyl)thiophene] (P3EHT) and random copolymer of the two regio-isomers of P3HT. They were made in order to study the influence of molar mass, branching and regio-irregularity on the γ-value. The Kumada catalyst transfer condensative polymerization (KCTCP) and the Pd(RuPhos)-protocol were used for the polymerizations in order to have control over the molar mass of the growing chain and consequently to obtain well-defined and reproducible materials. The P3AT derivatives obtained were characterized by gel permeation chromatography (GPC), spectroscopic techniques (1H-NMR, UV-Vis) and the γ-value was investigated using the third-harmonic scattering (THS) technique. In particular, the THS technique is useful to investigate the optical behavior of the series of polymers in solution.