Archive for the 'Florida' Category

Engineers: Efficient organic LEDs a step toward better lights

GAINESVILLE, Fla. — For those who love “green” compact fluorescent bulbs but hate their cold light, here’s some good news: Researchers are closer to flipping the switch on cheaper, richer LED-type room lighting.

University of Florida materials science and engineers have achieved a new record in efficiency of blue organic light-emitting diodes, or OLEDs. Because blue is essential to white light, the advance helps overcome a hurdle to lighting that is much more efficient than compact fluorescents — but can produce high-quality light similar to standard incandescent bulbs.

“The quality of the light is really the advantage,” said Franky So, a UF associate professor of materials science and engineering and the lead investigator on the project.

So collaborated with UF materials science engineering professor Paul Holloway and UF assistant professor Jiangeng Xue on the research.

The U.S. Department of Energy, which funded the research, reported the results on its Web site. Papers about it appeared earlier this year in the journal Applied Physics Letters.

OLEDs are similar to inorganic light emitting devices, or LEDs, but are built with organic semiconductors on large area glass substrates rather than inorganic semiconductor wafers. When used in display screens computer monitors, they have higher efficiency, better color saturation and a larger viewing angle. OLED displays are also used in cell phones, cameras and personal digital assistants. OLED flat panel TVs were introduced by Sony recently.

So and his team’s blue OLED achieved a peak efficiency of 50 lumens — a lumen is a measure of brightness perceived by human eyes — per watt. That’s a significant step toward the goal of his project: to achieve white light with efficiency higher than 100 lumens per watt.

So said the fact that OLEDs are highly “tunable” — each OLED is an individual light, which means differently colored OLEDs can be combined to produced different shades of light — puts warm, rich light easily within reach. “The quality of the light generated can easily be tuned by using different color emitters” he said. “You can make it red, green, blue or white.”

Read the full post…

Office for Student Financial Affairs to have extended hours, Jan. 5-16

GAINESVILLE, Fla. — On weekdays during Jan. 5 through Jan. 16, the Office for Student Financial Affairs (SFA) will observe extended hours from 8:15 a.m. to 4 p.m. weekdays. Switchboard hours will be 8 a.m. to 4:45 p.m. On Jan. 20, following the Martin Luther King holiday on the 19th, regular switchboard hours will resume.

Students are encouraged to visit the office at S-107 Criser Hall for faster service than phone inquiries. All financial aid advisers will be at the front service counters during the Jan. 5-16 period.

For more information, visit http://www.sfa.ufl.edu.

Read the full post…

Championship game to be shown in UF’s O’Connell Center, student union

GAINESVILLE, Fla. — University of Florida students, faculty and staff can watch the FedEx BCS National Championship football game against the University of Oklahoma in several places on campus Jan. 8.

The game will be simulcast in the O’Connell Center following the 20th-ranked Gator women’s basketball game against Mississippi State and in the Reitz Student Union. All fans are encouraged to wear orange-colored clothing and accessories.

Doors at the O’Connell Center will open at all four gates at 4 p.m. with free admission for the basketball game, which starts at 5 p.m. After 5:30 p.m., only students, faculty and staff with Gator 1 cards will be admitted to the O’Connell Center. Game coverage starts at 8 p.m. with kickoff expected at 8:17 p.m.

Women’s basketball season ticket holders and Gator Gold Card holders will have their usual accommodations at the basketball game in terms of reserved seating and a special entrance at Gate 1.

The football game will be shown on four large video boards. Dazzlers will perform and several contests will be held. Concessions will be available. Doors will remain open until the beginning of the third quarter or until the arena is filled. Guests will not be allowed to re-enter if they leave.

The game also will be shown in the Reitz Student Union’s Grand Ballroom, where doors will open at 6 p.m., and in the Orange & Brew, which will be open regular hours.

Parking on Jan. 8 will face the usual weekday restrictions until 4:30 p.m. After 4:30 p.m., parking will be available throughout campus as usual on a weekday evening.

O’Connell Center prohibits these items: alcoholic beverages, weapons, chair backs larger than a single seat, food/drink containers, bottles, cans, ice bags, ice chests, noise-making devices, large cameras, flags, umbrellas, backpacks, video cameras/cases, strollers or any items deemed hazardous by personnel. Prohibited items must be returned to vehicles or disposed of before entering.

Read the full post…

Flu season begins — first campus case documented

GAINESVILLE, Fla. — Flu season is officially on campus. The Student Health Care Center (SHCC) confirmed its first flu case in late November.

In order to safeguard students and faculty from catching the flu, the SHCC recommends that everyone receive a flu shot. Here are the top five reasons:

  • The flu shot protects against three different strains of the influenza virus.
  • Flu viruses are always changing, so it’s typical for new strains to appear this year.
  • Sixteen of the last 20 flu shots have been well-matched with the viruses circulating that season.
  • If the flu vaccine is well-matched to the virus, the effectiveness rate is between 70 and 90 percent in healthy adults.
  • Even if the flu shot is not well-matched, it can still provide enough protection to prevent or lessen the severity of the flu.

Students, faculty and staff may get a flu shot at the Student Health Care Center on a walk-in basis, Monday through Friday, 8 to 11 a.m. and 1 to 4 p.m. The cost is $5 for students and $25 for faculty and staff. Call 352-392-1161 for more information.

Read the full post…

Group treatment may help children achieve healthier weights

GAINESVILLE, Fla. — Group-based treatment programs may effectively combat childhood obesity in rural communities, according to a new University of Florida study.

Children who participated in one of two group programs — family-based or parent-only — were less overweight compared with children in a control group. The findings appear in the December issue of Archives of Pediatric and Adolescent Medicine.

The UF study is the first to assess the effectiveness of a child weight-management program in a real-world, community-based setting for families in rural areas.

“Given the scope and seriousness of obesity in America and the limited access to services for children in rural settings, there is a pressing need for programs that help rural families adopt healthy dietary habits and increase physical activity,” said David Janicke, lead investigator and an assistant professor in the UF College of Public Health and Health Professions’ department of clinical and health psychology.

More than 16 percent of rural children are obese compared with 14 percent of urban children. Factors contributing to the disparity include greater rates of poverty in rural areas and geographical barriers that limit access to medical care, healthy foods and facilities for physical activity.

The study involved 93 children and their parents from four rural counties in Florida. The children were between the ages of 8 and 14 and had a body mass index, or BMI, above the 85th percentile for age and sex, based on growth charts from the Centers for Disease Control and Prevention. Children with BMI scores above the 85th percentile are considered overweight or obese. Families were randomly assigned to one of three four-month treatment groups: family-based, parent-only or a control group made up of families on the treatment wait list.

On average, children in the weight-management programs experienced greater decreases in BMI scores compared with children in the control group six months after treatment. Compared with their pre-treatment levels, children in weight-management groups were 4 percent less overweight, and children in the control group were about 3 percent more overweight at the end of the six-month period.

Although the weight changes may appear modest, they are in line with the researchers’ goal of helping children make gradual changes to their diet and lifestyles. In addition, the children’s weight loss approached the amount necessary for improvements in lipid and blood sugar levels, according to previous research.

“When working with children it’s important to introduce lifestyle changes slowly and make it fun, otherwise they may become resistant,” Janicke said. “Making big changes in their diets could lead to unhealthy habits like skipping meals, eating disorders or weight gain.”

The weight control programs were conducted at Cooperative Extension Service offices. Participants received instruction on healthy diet choices and children were given pedometers and encouraged to gradually increase their daily steps. Families and group leaders worked together to set individualized dietary goals based on the children’s progress and preferences.

In the parent-only treatment group, parents received training on nutrition, exercise and behavior management strategies for their children. In the family-based group, parents and children met separately but in simultaneous groups. While the parents received instruction, the children reviewed their progress, participated in a physical activity and learned how to prepare a healthy snack.

“In the group setting families can talk with each other about barriers to making changes, offer suggestions and hold each other accountable,” Janicke said.

While the parent-only and family-based groups were effective, the parent-only format offers potential cost benefits, the researchers say. Parent-only programs require fewer resources, such as staff, space and materials. Parents may also take more responsibility for teaching healthier lifestyle habits and implementing the changes at home. In addition, children can avoid a possible stigma among their peers associated with attending weight-management programs and it may be easier for parents to attend the sessions without their children. Participants in the parent-only group attended 74 percent of the sessions compared with 63 percent attendance in the family-based group.

The UF study also has implications for the delivery of community-based treatment programs for children, particularly the use of Cooperative Extension Service offices, which exist in nearly every county in the United States, Janicke said.

“The Cooperative Extension Service network offers a unique setting in that it provides the infrastructure and stature within rural communities to support preventive services for families,” he said.

Child weight-management studies in real-world settings like the one led by Janicke are extremely valuable and much too rare, writes Dr. Thomas Robinson, the Irving Schulman, M.D. endowed professor in child health at Stanford University, in an editorial accompanying the article on the UF study.

“We need to focus new energy on finding solutions to childhood obesity, not just documenting the problem,” Robinson wrote. “This is the most direct way to generate the high-quality data needed to establish an evidence base for effectively and efficiently managing pediatric obesity.”

Read the full post…

Associated Press: Clive Wynne

Psychology professor Clive Wynne was quoted in a Dec. 8 Associated Press story about a study that found dogs might perceive unfair treatment of other dogs.

Read the full post…

UPI: Jonathan Cohen

Law professor Jonathan Cohen was quoted in a Dec. 9 United Press International story about General Motors’ use of an ad to apologize to customers for the company’s failing financial situation.

Read the full post…

Associated Press: Joseph Little

Joseph Little, a law professor emeritus, was quoted in a Dec. 13 Associated Press story about efforts by Gov. Charlie Crist to find more diverse nominees for a State Supreme Court vacancy.

Read the full post…

New York Times: Timothy Judge

Management professor Timothy Judge was quoted in a story in the Dec. 14 New York Times Magazine about his research into how traditional attitudes by men and women might affect their pay. The story was the result of a News Bureau news release.

Read the full post…

Los Angeles Times: Michael Martinez

Political science professor Michael Martinez was quoted in a Dec. 15 Los Angeles Times story about Gov. Charlie Crist’s proposal to convert sugar cane fields in South Florida into a restoration project for the Florida Everglades.

Read the full post…

« Previous PageNext Page »