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Engineering & Technology for a Sustainable World

July 2001 - VOL. 8 NO. 7

Features

Let the Sunshine in ... 7
Open-roof greenhouses are shedding some new light on how crops are grown in controlled-environment structures. They provide cooler growing temperatures, grow plants in direct sunlight and reduce energy.

Exemption to the Rules ... 9
Although building codes have evolved during the past century, most states and local governments still exempt farm buildings from them.

Ethically speaking ... 13
By the nature of their work, engineers are in a unique and sometimes unenviable position, says Charles E. Harris Jr., a philosophy and ethics professor at Texas A&M University.

SPECIAL INSERT
Emerging Technologies for the 21st Century
2000-2001 ASAE Annual Report
Emerging technologies continue to change the way the Society operates. This past year has seen a continued focus on providing electronic services and access to members. Get the details in reports written by volunteer and staff leaders. See insert.

Departments

Update ... 3

Business Briefs ... 15

Events Calendar ... 19

From the Manufacturers ... 20

Personnel Service ... 22

Professional Listings ... 24

Last Word (reader opinion) - Guarding Human Life ... 25
PTO safety problems will continue until shields are replaced using a different design philosophy that recognizes that PTOs are power transmission components. Safe solutions are possible for transferring power from the tractor engine to a mounted or pulled implement. These solutions eliminate or completely guard PTOs. Machinery on U.S. farms must be retrofitted with a new solution to solve safety problems.

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