I had the opportunity to stay at the National Institute of Standards and Technology (NIST) in Boulder, Colorado, for two years from October 2000 to September 2002. This experience was both professionally and personally valuable. Boulder, located near the Rocky Mountains at an altitude of about 1,600 meters, is a well-known training ground for marathon runners. It is a high-quality living environment with many research institutions, including the University of Colorado. The city maintains a high standard of living by avoiding unnecessary population growth, though this leads to high property prices. I lived in an apartment near NIST, but was eventually evicted after a renovation. Despite the difficulties, I managed to adapt. NIST is one of the United States' national research institutes, maintaining all national standards. It has over 3,200 staff and 1,600 guest researchers, with most working in Gaithersburg, Maryland. The Boulder NIST has about 400 people and has a relaxed atmosphere. The campus is green, and there are many places to relax for lunch, though there are few sports facilities. Staff often play volleyball in the campus. There is a NIST police force that strictly enforces speed limits, and violations can lead to investigations. Security checks become stricter during tense international relations, such as the Iraq crisis, which caused some anxiety. I was part of the High Tc Electronics Group under the Electromagnetic Technology Division, working on high-temperature superconducting Josephson devices. I contributed to the development of a high-frequency mixer using edge-joined YBCO Josephson elements. The group also had five cryoelectronics groups and other research areas. The organization structure changed suddenly, with some research labs moving to other divisions, which was unexpected. The staff and I were not informed in advance. The division has weekly Friday gatherings for socializing and discussions. The atmosphere was friendly and relaxed, with no strict hierarchy. The research environment at NIST was efficient and free from unnecessary tasks, which was a valuable experience. I appreciate the opportunity to learn about American research practices and methods. This experience was a great learning opportunity. I am grateful for the chance to be at NIST. (Submitted on July 25, 2001)I had the opportunity to stay at the National Institute of Standards and Technology (NIST) in Boulder, Colorado, for two years from October 2000 to September 2002. This experience was both professionally and personally valuable. Boulder, located near the Rocky Mountains at an altitude of about 1,600 meters, is a well-known training ground for marathon runners. It is a high-quality living environment with many research institutions, including the University of Colorado. The city maintains a high standard of living by avoiding unnecessary population growth, though this leads to high property prices. I lived in an apartment near NIST, but was eventually evicted after a renovation. Despite the difficulties, I managed to adapt. NIST is one of the United States' national research institutes, maintaining all national standards. It has over 3,200 staff and 1,600 guest researchers, with most working in Gaithersburg, Maryland. The Boulder NIST has about 400 people and has a relaxed atmosphere. The campus is green, and there are many places to relax for lunch, though there are few sports facilities. Staff often play volleyball in the campus. There is a NIST police force that strictly enforces speed limits, and violations can lead to investigations. Security checks become stricter during tense international relations, such as the Iraq crisis, which caused some anxiety. I was part of the High Tc Electronics Group under the Electromagnetic Technology Division, working on high-temperature superconducting Josephson devices. I contributed to the development of a high-frequency mixer using edge-joined YBCO Josephson elements. The group also had five cryoelectronics groups and other research areas. The organization structure changed suddenly, with some research labs moving to other divisions, which was unexpected. The staff and I were not informed in advance. The division has weekly Friday gatherings for socializing and discussions. The atmosphere was friendly and relaxed, with no strict hierarchy. The research environment at NIST was efficient and free from unnecessary tasks, which was a valuable experience. I appreciate the opportunity to learn about American research practices and methods. This experience was a great learning opportunity. I am grateful for the chance to be at NIST. (Submitted on July 25, 2001)