Vol. 24 No. 40 (2009): Acústica e Vibrações 40

Editorial

The General Assembly of Sobrac, held in Belo Horizonte on November 26 and 27, 2008, established that the editorial reformulation of the Acústica e Vibrações magazine, which began with issue number 38, should be continued.

To this end, it was decided that Sobrac's Board of Directors would appoint an editor-in-chief, whose main task would be to convene the editorial board appointed in 2006 so that it effectively and immediately begins its activities.

Another important decision of the assembly was to seek the indexation of the journal from the research funding agencies (Capes and CNPq).

Doctor Engineer Júlio Cordioli, who currently holds the position of Visiting Professor at the Federal University of Santa Catarina, accepted our invitation and will be the first effective Editor-in-Chief of Revista Acústica e Vibrações.

The appointment of Júlio brings, in the last year of this administration, a new perspective for our Journal, which after winning the ISSN, will have a body of reviewers, in the search for a scientific qualification.

Number 40 of Revista Acústica e Vibrações maintains the same line as the last three editions, with eight technical articles and information regarding the congresses to be held in 2009. All articles were sent through the Sobrac website, an expedient that has proved to be very practical. and efficient.

The commercial advertisements on the back covers of 40 magazine were replaced by publicity pieces for technical events. The yellow pages booklet with the announcements of our institutional associates will be edited separately and distributed as of May 2009.

We hope that this issue pleases members and encourages colleagues to submit articles for publication in the next issue, which will be reviewed by the new editorial board to be formed soon.

Marco Antonio Nabuco de Araujo

Summary content:

• Measurement of absorption coefficient of impedance tube membrane absorbers using a pu probe;
• The environmental acoustic quality in public school classrooms, its influence on the teaching-learning process and on the teacher's quality of life;
• ISO 140-4 and ISO 140-5 Procedure for Sound Insulation Measurement;
• Binaural signal acquisition technology – a history to current projects;
• International Noise Awareness Day – Campaign in three cities in southern Brazil;
• Evaluation of traffic noise as an index of noise pollution;
• Acoustics and Recycling of Buildings: Study of Capela Santa Maria in Curitiba; and
• Sound Perception in Two Green Areas in Curitiba: Noise Tolerance Indicators in Public Spaces.