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Optical Frequency Comb
Compact Chips Advance Precision Timing for Communications, Navigation and Other Applications
Shrinking Technology, Expanding Horizons: Complete Article
National Institute of Standards and Technology, Boulder, CO, USA
Igor Kudelin, et. al
Department of Physics, University of Colorado Boulder, Boulder, CO, USA
Abstract: Numerous modern technologies are reliant on the low-phase noise and exquisite timing stability of microwave signals. Substantial progress has been made in the field of microwave photonics, whereby low-noise microwave signals are generated by the down-conversion of ultrastable optical references using a frequency comb1,2,3. Such systems, however, are constructed with bulk or fibre optics and are difficult to further reduce in size and power consumption. In this work we address this challenge by leveraging advances in integrated photonics to demonstrate low-noise microwave generation via two-point optical frequency division4,5. Narrow-linewidth self-injection-locked integrated lasers6,7 are stabilized to a miniature Fabry–Pérot cavity8, and the frequency gap between the lasers is divided with an efficient dark soliton frequency comb9. The stabilized output of the microcomb is photodetected to produce a microwave signal at 20 GHz with phase noise of −96 dBc Hz−1 at 100 Hz offset frequency that decreases to −135 dBc Hz−1 at 10 kHz offset—values that are unprecedented for an integrated photonic system. All photonic components can be heterogeneously integrated on a single chip, providing a significant advance for the application of photonics to high-precision navigation, communication and timing systems.
Chicken Shepard’s Pie
NSF International (Ann Arbor, Michigan): Food Equipment Standards
This traditional Irish dish originated as a thrifty way to repurpose leftover meat. In the late 18th century, the concept evolved from using lamb or mutton, commonly tended by shepherds, hence the name. The dish typically comprises minced meat — lamb, beef or chicken — cooked with vegetables and gravy, topped with mashed potatoes.
Ingredients:
• 1 can chicken, drained
• ½ can canned sliced potatoes
• 2 tsp onion powder
• ½ cup canned peas, drained
• 2 tbsp Worcestershire sauce
• 1 tbsp butter
• Splash of milk
• 2 tsp salt
• 2 tsp black pepper
• 1 tsp nutmeg
Directions:
1. Heat potatoes in microwave safe bowl, ~2 mins. Mash the potatoes with the milk and butter, a Teaspoon each of salt, pepper, and garlic powder, stir well. Adjust seasoning. Set aside.
2. Add remaining ingredients, stir well.
3. Spoon the mashed potatoes evenly on top of the meat.
4. Cook covered in the microwave oven for 3-5 minutes on medium power.
5. Cut into 2 portions. Scoop out from the bottom to keep the layers intact.
More:
New Mexico State University Recipe
University of Illinois Venison Recipe
This video has been made available for informational and educational purposes only. UCCS hereby disclaims any and all liability to any party for any direct, indirect, implied, punitive, special, incidental or other consequential damages arising directly or indirectly from any use of this video, which is provided as is, and without warranties.
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“We see that the Pacific theater presents significantly longer distances than any theater we operated in the recent past, and that’s going to present some pretty significant fuel/logistic supply chain risk,” said DAD Roberto Guerrero.https://t.co/ncdcEwP6d3
— Air Force Energy (@AFEnergy) May 15, 2023
How many pounds of stuffing can a C-5 carry? Asking for a friend… #HappyThanksgiving @TeamCharleston @Travis60AMW pic.twitter.com/kKkBIEC5py
— Air Force Energy (@AFEnergy) November 23, 2021
The Future of Universities in a Block Chain World
Herbst Program for Engineering, Ethics & Society
Bibliography
“A Next Generation Smart Contract & Decentralized Application Platform” | Vitalik Buterin
“Fair and Robust Multi-Party Computation using a Global Transaction Ledger” | Aggelos Kiayias, Hong-Sheng Zhou, Vassilis Zikas
ראש השנה
Here is a general description of what you might find in the Colorado State University Jewish community:
- Hillel Organization: Many universities, including CSU, have a Hillel organization, which is a Jewish student organization that provides a platform for Jewish students to connect, celebrate Jewish culture, and explore their faith. Hillel often organizes events, such as Shabbat dinners, holiday celebrations, and educational programs.
- Jewish Student Groups: CSU may have various Jewish student groups or clubs where students with shared interests within the Jewish community can come together. These groups may focus on different aspects of Jewish culture, social activities, or advocacy.
- Religious Services: Some universities with a significant Jewish population offer on-campus religious services, such as Shabbat services and High Holy Days observances, to accommodate students’ religious needs.
- Cultural Events: The Jewish community at CSU might organize cultural events and activities, such as lectures, film screenings, and cultural festivals, to promote understanding and appreciation of Jewish heritage and traditions.
To get the most accurate and up-to-date information about the Colorado State University Jewish community, I recommend visiting the university’s website or contacting the relevant student organizations and offices on campus. Additionally, you can connect with current students or alumni who are part of the Jewish community at CSU to gain insights into their experiences and activities.
New update alert! The 2022 update to the Trademark Assignment Dataset is now available online. Find 1.29 million trademark assignments, involving 2.28 million unique trademark properties issued by the USPTO between March 1952 and January 2023: https://t.co/njrDAbSpwB pic.twitter.com/GkAXrHoQ9T
— USPTO (@uspto) July 13, 2023
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