Heave Motion Measurement by Adaptive Filter Based on Longuet-Higgins Wave Model

A method is proposed to obtain heave motion information based on the Longuet-Higgins wave model. The Longuet-Higgins wave model which is closer to the sea wave is introduced. Based on it, random process of the noise is analyzed and the highpass filter is designed to reduce errors. Then it is the key point in this article that an adaptive algorithm is put forward because of the complexity of the waves. The algorithm adjusts the cutoff frequency to reduce the amplitude attenuation of the filter by analyzing the wave. For the same reason the comprehensive parameter of the phase compensation can be also obtained by the algorithm. Simulation measurement results show that under the rough sea situation the maximum value of absolute error is 0.4942 m according to the normal method, the method is 0.1170 m, and the average error ratio of the rough sea test reduces to 3.89% from 12.54%, which demonstrates that the adaptive filter is more effective in measuring heave movement. A variety of simulation cases show that the adaptive filter can also improve the precision of the heave motion under different sea situations

Goodbye Season 1, and Thank You!

Thank you so much for joining us for this first season! We are collecting listener feedback for our capstone project via this survey. If you have a couple minutes to spare, please consider filling it out. We hope to see you soon with a season 2! The transcript for this podcast is available for download as an additional file

Episode 4: Dear Anonymous Donor

Divya Bhatia and Qiuwei Yang sit down with Bridget Yang to discuss her piece, Dear Anonymous Donor,” and the anatomy lab experience. Recorded October 2019. Bridget Yang\u27s poem Dear Anonymous Donor and the transcript for this episode are available for download as additional files

Season 2, Episode 3: People and Places

Dr. Hugh Silk and Jesse Sardell (\u2724) are joined by Mina Botros (\u2724) to hear about his experience meeting people -- both similar and quite different from himself -- as he got involved with vaccination efforts early in the COVID-19 pandemic. Mina Botros\u27 piece People and Places and the transcript for this episode are available for download as additional files

Season 2, Episode 4: An Appreciative Inquiry Narrative

Laël Ngangmeni (\u2723, MD/PhD) and Dr. Hugh Silk are joined by Ken Peterson, a family nurse practitioner and assistant professor in the Graduate School of Nursing, to reflect on his experience as a nurse during the HIV/AIDS epidemic. Recorded August 2021. Ken Peterson\u27s piece An Appreciative Inquiry Narrative and the transcript for this episode are available for download as additional files

Season 2, Episode 6: Hiya: Saving Face, Anxiety, and Asian-Americans

Qiuwei Yang (\u2722) and Laël Ngangmeni (\u2723, MD/PhD) are joined by family physician Dr. Henry Del Rosario to discuss an interesting experience at a car dealership, as well as how his creative side and his faith impact his perspectives on healing. Recorded October 2021. Dr. Del Rosario\u27s piece Hiya: Saving Face, Anxiety, and Asian-Americans was first published on his blog. The Workers of Worcester website created by Dr. Del Rosario and Dr. An-Hoa Giang is available at: https://www.workersofworcester.org/. The transcript for this episode is available for download as an additional file

Season 2, Episode 2: Check Engine Light

Qiuwei Yang (\u2722) and Jesse Sardell (\u2724) are joined by pediatrician Dr. Heather Finlay-Morreale to discuss her experience of being diagnosed with a chronic illness and how that has influenced the way she cares for her own patients. Recorded April 2021. Dr. Finlay-Morreale\u27s piece Check Engine Light was first published in JAMA Neurology. The transcript for this episode is available for download as an additional file

Episode 5: Penal Code

Qiuwei Yang and Dr. Hugh Silk are joined by family physician Dr. Lisa Gussak to discuss the impact of incarceration on health and medical care. Recorded November 2019. Dr. Gussak\u27s piece Penal Code was first published in Pulse: Voices from the Heart of Medicine. The transcript for this episode is available for download as an additional file

Episode 6: Asylum Body Work

Divya Bhatia and Dr. Hugh Silk sit down with Dr. Lucy Candib to talk about the importance of medical-legal partnerships in advocating for individuals who are victims of abuse or torture in their home countries seeking asylum in the US. Content warning: physical and sexual abuse, homophobia, and torture. Recorded March 2020. Dr. Candib\u27s poem Asylum Body Work was first published in The Journal of the American Board of Family Medicine. The transcript for this episode is available for download as an additional file