Filtros de Elementos Conmutados Ing. A. Ramón Vargas Patrón [email protected]INICTEL Introducción En un artículo anterior desarrollamos una teoría general para el filtro activo de variable de estado. Se destacó el hecho de que podían variarse independientemente los distintos parámetros del filtro mediante un ajuste de las ganancias de los amplificadores. En el presente estudio se analizarán los filtros de elementos conmutados, los cuales son esencialmente filtros analógicos en los que el ajuste de parámetros se efectúa con ayuda de una señal de reloj. 1.1 Filtros de Resistencias Conmutadas Considérese el filtro pasabajo elemental de la Fig.1. Su función de transferencia es: 1 1 ) ( ) ( ) ( 1 + = = RC s V s V s G o s …(1) Sea R una función del tiempo, digamos R(t), tal que ⎩ ⎨ ⎧ < < ∞ < < = T t T T t R t R δ δ , 0 , ) ( 1 …….(2) donde 1 < δ . Además, se cumple que R(t+T)=R(t). Si 1/T es mucho mayor que la máxima frecuencia componente de v 1 (t) entonces la carga Q que ingresa al condensador en un intervalo T está dado por ∫ − = T dt R v v Q δ 0 1 0 1 …(3) manteniéndose v 1 y v o aproximadamente constantes durante el intervalo de integración. Por lo tanto: T R v v Q δ 1 0 1 − ≈ …(4) Podemos asumir que esta carga circula a través de una resistencia equivalente R’ presente durante todo el intervalo T, esto es, T R v v Q ' 0 1 − ≈ …(5) -1-
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DONATE TO THE UNITED WAY! September 28-October 29sunset.dadeschools.net/Site/Documents/GreenComunicator/... · 2016-03-02 · United Way improves lives by mobilizing the caring power
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United Way improves lives by mobilizing the caring power of communities around the world to
advance the common good.
Let’s work together to help the millions of people around the world in need.
DONATE TO THE UNITED WAY!
September 28-October 29
Please send your donations in a sealed envelope with your family’s name and amount
enclosed.
Your generosity is greatly appreciated!
l
With Sunset Fun Run, there is no selling or delivering products, and it reinforces the value of fitness. Family and friends anywhere in the world can support our school by giving pledges toward the number of laps your student will run on the day of the Fun Run on October 1st, 2015. To make our fundraising significantly easier, more profitable, and more fun, we’ve asked the experts at Boosterthon to power the entire 9-day program. Boosterthon has been organizing Fun Runs for 13 years and is partnering with 1,600 other schools across America this year. Funds raised will go toward School beautification and giving our students a wonderful 9-day experience.
EVERY STUDENT INCLUDED
Regardless of financial participation, every student is invited to participate in the entire Fun Run program. Students will also receive a FREE gift just by being registered on funrun.com.
WORLD-CLASS CHARACTER PROGRAM
Powered by Boosterthon, this year’s character theme
is BIG WORLD RECESS, a global sports theme all
about playing with character. Our students will travel
the world and learn 6 Character Plays from REAL kid-
athletes who play a sport and show REAL character.
LESS HASSLE & MORE PROFIT
To get the most out of our Fun Run, we’re using Boosterthon’s pledging technology—funrun.com—that helps us raise and collect far more. We’re also using thousands of fun print pieces to help promote our Fun Run. Plus, their
amazing team coordinates all the details and logistics, allowing us to better
focus on education.
THE MOST VALUE
Most schools keep between 40-50% with other fundraisers. But Sunset PTA will receive 54% have more fun, and raise much more. Plus, Boosterthon covers all the costs of the program. Using Boosterthon, Sunset PTA has profited over $20,000.00 on our previous run. And this year, our goal is to profit over $25,000.00. We need your help to do it!
Thank you so much for supporting our school! Learn more about Boosterthon at boosterthon.com.
SUNSET FUN RUN COMING SOON! A fundraiser for School beautification!
BOOSTERTHON PAYS FOR . . . • Live Support Team with months of
assistance and expertise • Pre-program event kit • 7,000+ letters and stickers (avg.) • Promotional posters • Teacher t-shirts & kits • Pledgebook for every student • Pledging website at funrun.com • Online Support Team • Character magazine per teacher • Free character music • Free HeroSteps character app
RESPECT: Showing regard for the worth and dignity of someone or something. Being courteous and polite, and judging all people on their merits. Respect takes three major forms: respect for oneself, respect for other people, and respect for all forms of life and the environment.
Pass It On to Parents • Watch a television show or movie together as a family. Discuss how the
characters were respectful or disrespectful to one another. • Talk to your children about respect they experienced throughout the day,
week, or month. Were there situations where they felt disrespected? Discuss how they should handle these feelings.
• Create a RESPECT expectation sheet for your family and keep it posted in the house. You should include what respect should look like in your home.
• Encourage open and honest communication with your child. Talk about a variety of concerns. A child who knows you are open to listening about anything is more willing to share things that are troubling. This is very important if the child is being bullied.
Activities for Schools • At the end of every week, have students make a list and describe the
ways they acted respectfully that week. Make sure they include how they respected their siblings and other family members (K-5).
• Have students work alone or with a partner to create a song, rap, or chant about respect. The words tell why respect is important and how it could make the world a better place (6-12).
• Have students research and write about ways we can be more respectful of our environment (6-12).
• Have students make a campaign poster about respect. Make sure they include the word RESPECT and give at least three reasons why they support respect at their school (K-12).
• Create a RESPECT bulletin board. Ask teachers to nominate students who have been particularly respectful and place their pictures on the board (K-8).
• Have students write a commercial for respect. Try to sell respect so others will want to start using it (6-12).
• Have students research and present current events that involve someone who was either respectful or disrespectful (6-12).
EDITION
September 2015 Volume 1, I ssue 1
EDITION
Values Matter at Norma Butler Bossard Elementary.
Back to School Night
Childhood Cancer Awareness Month, Briefing #17942
September 11 is Patriot Day,
Briefing#17983
September 28 is Family Dinner Day, sponsored by Informed
Families.
September 30 is Dads Take Your Child to School Day, Briefing
#18047
Applicable Standards
♦ PE.K.R.1.1-Treat others with respect during play
♦ PE.3.R.1.5-Show respect for the views of a peer from a different cultural background
♦ PE.8.R.5.5-Demonstrate appropriate etiquette, care of equipment, respect for facilities and safe behaviors while participating in a variety of physical activities.
♦ SS.1.C.2.4-Show respect and kindness to people and animals.
♦ G.K12.4.2.4d-Ethics-Accomplish: Promote humane and respectful solutions to complex problems.
♦ G.K12.5.1.1a-Consensus Building-Know: Recognize the essential need to respect the ideas, feelings, and abilities, of others.
♦ VA.912.S.3.4-Demonstrate personal responsibility, ethics, and integrity, including respect for intellectual property, when accessing information and creating works of art.
Grades K-2: Draw or write to tell about ways to be respectful. Grades 3-5: What are the benefits of treating yourself and others with respect? Can we show respect for living things and the environment? If so, how?
Grades 6-8: Why is respect important in order for people to succeed? What happens to organizations where respect is not present? Grades 9-12: Why is respect important for an organization to succeed? What happens to organizations where respect is not present?
Grade Reading List K-2 • Beaumont, Karen. I Like Myself!
• Brimner, Larry Dane. School Rules • Carle, Eric. The Grouchy Ladybug • DePaola, Tomie. Now One Foot, Now the Other • Henkes, Kevin Chrusanthemum • Lester, Helen.Tacky the Penguin • Lobel, Arnold. Frog and Toad Are Friends • Shannon, David. No, David! • Shannon, David. David Gets in Trouble • Shannon, David. David Goes To School
3-5 • Dahl, Roald. Charlie and the Chocolate Factory • Dr. Seuss. Horton Hears a Who! • Dr. Seuss. Horton Hatches the Egg • Pilkey, Dave. The Paper Boy • Sachar, Louis. There’s a Boy in the Girl’s Bathroom • Rockwell, Thomas. How To Eat Fried Worms • Davies, Jacqueline. The Lemonade War
6-12 • Brumfield, Sheila. The Incredible Journey • Pearsall, Shelley. Trouble Don’t Last • Konigsberg, E.L. The View from Saturday • Hoobler, Dorothy. The Ghost in Tokaido Inn • Bartolotti, Susan. No Man’s Land • Hobbs, Will. Bearstone • Magorian, Michelle. Good Night, Mr. Tom • Salisbury, Graham. Lord of the Deep
Respect Recommended Reading List
Values Matter at Marjory S. Douglass Elementary.
▼ Log in to the Parent or Student Portal at http://www.dadeschools.net:
Each year you must re-register for email subscriptions
On the main Portal page,
▼ Click View Grades & Attendance
The Internet Grade Viewer summary page will be dis
Setup/Verify Email Addresses
▼ Select the name of the student for whom you would like to receive alerts
▼ Find Profile the link on the left-hand side ▼ Click Edit Profile
All Proceeds Benefi t: GIPA - German International Parent Association
The 24th Annual Oktoberfest is made possible with the support of the Miami-Dade County Department of Cultural A� airs and the Cultural A� airs Council, the Miami-Dade County Mayor and Board of County Commissioners.
Oktoberfest2015 Poster 10x15.indd 1 9/14/15 9:44
Welcome Back Breakfast Please join us for breakfast as we review SIPA’s objectives for the year and main activities!
It is a great chance to learn more about the organization and get involved in activities that will directly impact the school and the Spanish program. When: Friday, September 25, 2015 Time: 9AM Where: Sunset Elementary School cafeteria
Join Únete
WWW.SIPA-MIAMI.ORG
Spanish International Parents Association, Inc.
Your membership and donations provide:
Funding to your child’s school
Purchase of Spanish books
Science & Educational Presentations
Hispanic Heritage cultural activities
Teacher training
Scholarships to 5th grade Spain trip
Your membership benefits are:
SIPA shirt to wear on no uniform days
Community building events
Update on cultural activities around
town &
Many other member-only
benefits throughout the year
Only $25/yr Sólo
Tu membresía y donaciones hacen posible
Proveer fondos para los colegios de tus hijos
Adquirir libros de texto en Español
Auspiciar presentaciones científicas y culturales
Organizar actividades por la Hispanidad
Formar maestros
Proveer becas para el viaje de 5º a España Our annual events include: WELCOME BACK PICNIC-TAPAS NIGHT-PAELLA GALA-INTERNATIONAL BOOK FAIR AT SELECTED SCHOOLS- 5TH GRADE SPAIN TRIP Nuestros eventos anuales incluyen: PICNIC DE VUELTA AL COLE – NOCHE DE TAPAS - PAELLA GALA-FERIA INTERNACIONAL DE LIBROS EN DETERMINADOS COLEGIOS- VIAJE A ESPAÑA EN 5º
Spanish International Parents Association (SIPA) is a 501(C) non-profit organization that supports the Spanish International Studies Program. This program begins in elementary school and continues through high school. Participating schools are Ada Merritt K-8, Coral Way K-8, Downtown Doral Charter Elementary School, G.W. Carver Middle School, ISCHS, ISPA, and Sunset Elementary.
SIPA es la Asociación de Padres del Programa Español, una entidad sin ánimo de lucro que apoya a la sección española de los programas internacionales. Este programa comienza en elementary y continúa hasta el final de high school. Los colegios asociados a SIPA son Ada Merritt K-8, Coral Way K-8, Downtown Doral Charter Elementary School, G.W. Carver Middle School, ISCHS, ISPA, and Sunset Elementary.
Become a member onl ine or fill out a membership form
Hazte socio online o rellena un formulario de solicitud
(King Cake) please visit SIPAs store at the website www.sipa-miami.org. Orders will be delivered to each school on January 5th just in time for the Three King Celebration! This delicious and rich whipped cream filled bun has been the favorite treat for centuries. The cakes are shipped directly from Spain and will be available at each SIPA sponsored school for parent pick up.
Don't miss out on this opportunity to support SIPA while taking a bite of the tradition!!
ONLY $30
SÓLO 30$
¡Date prisa!
La fecha límite para comprar tu tradicional ROSCÓN DE REYES para la noche del 5
de enero es el 16 de NOVIEMBRE. Puedes pedir el famoso ROSCÓN DE REYES a través de la tienda (STORE) de nuestra página web http://www.sipa-miami.org/?page_id=818. Los pedidos se entregarán en los colegios el 5 de enero, justo a tiempo para la celebración de Reyes. Este delicioso y rico bollo relleno de crema ha sido el dulce tradicional navideño favorito durante siglos. Los roscones se traen directamente de España y podrán recogerse en los colegios asociados a SIPA el 5 de enero. No pierdas esta oportunidad de apoyar a SIPA y disfrutar de esta dulce tradición. To see ingredients visit our website - Ingredientes detallados en nuestra web.