Page 29 - Winter 2009

Fig. 9. Noise in Classrooms.
Fig. 10. Emergency Entrance/Boston City Hospital.
For each untreated door with an STC of 21 dB, the annu- al fuel usage for infiltration is $756. Reducing the crack sizes by half would increase the STC to 24 dB and reduce the fuel use to $378. For two types of treated doors, the STC improved to 42 dB, with fuel usage of $23.30 and 44 dB with fuel use of $2.66 per year. Thus, depending on the initial con- dition of the door, cost savings range from $378 per year to $753 per year, per door.
Hearing loss from use of personal music devices
Over time, the listening of music has moved from portable boom boxes to the modern mp3 players of today.
While this has been good from the point of view of the lis- tener, it has brought a new potential problem to light.
Several years ago, a medical doctor noticed that some his teenage patients had developed the kind of hearing loss associ- ated with working in factories all day. Careful research showed that the levels developed in the ear were 74 to 110 dBA (loud shouting to ear-splitting). This result has been repeated again and again in current research. The European Commission is studying whether to make a rule of requiring automatic vol- ume control. The fact that people are subjecting themselves to this kind of sound when they are not working has made it harder to attribute hearing loss strictly to places of work.AT
Publish Your Conference Proceedings with AIP
Disseminate your conference results worldwide quickly and cost effectively
As a conference organizer, you want the key findings at your meeting to reach the largest possible audience as quickly and inexpensively as possi- ble. With more than 700 Conference Proceedings published, the American Institute of Physics is uniquely positioned to maximize the impact of that lead- ing-edge research by ensuring fast, cost-effective dissemination to researchers worldwide. AIP Conference Proceedings also preserve the continuity of the papers delivered at your meeting—something that’s lost when individual articles are scattered among various journals.
AIP puts your proceedings online
AIP mounts each new volume online almost simultaneously with the publication of the printed version. This ensures that researchers in your field will have prompt access to the results of your conference. Links to your proceedings are accessible from the Inspec database and from major search engines. Access is available to patrons at a growing number of libraries worldwide. You can also offer online access to attendees of your conference.
Discover why conference organizers return to AIP year after year
The vast majority of organizers of regularly recurring conferences return to AIP to publish subsequent proceedings. Here are some of the benefits they’ve enjoyed:
• Rapid publication, typically 10 to 12 weeks from the receipt of all the manuscripts
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Abstracts of all conference papers automatically appear in AIP’s SPIN (Searchable Physics Information Notices) abstracts database. SPIN is widely available in academic, corporate, and government research libraries around the world. It is a rich resource with complete bibliographic records for more than 100 of the world’s leading publications in the physical sciences.
Visit us on the web at http://proceedings.aip.org.
For more information and proposals, contact:
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28 Acoustics Today, October 2009