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1. “Why Soil Matters to Plants and Plants Matter to Soil: Examining Categorizations of Plant-Soil Relations in the Early Twentieth Century”

   Yilmaz_Silverman, Özlem; Kendig, Catherine (March 2025, https://sites.google.com/view/integratedhps/)

   10th Integrated History and Philosophy of Science Conference. California Institute of Technology. Pasadena, California. 

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2. Analysis of the Gulf Coast Aquifer System Compaction Based on Extensometer Records at Baytown and Pasadena, Texas, USA

   https://doi.org/10.1061/9780784485477.042  

   Shehu, Ahmed D; Liu, Yi; Zhou, Xin (May 2024, American Society of Civil Engineers)

   A total of 14 extensometers were installed in Houston-Galveston Region, Texas, USA, at 12 locations to record compaction. The earliest extensometer began to record compaction in 1973. Records from three of the extensometers installed at Baytown (Shallow and Deep) and Pasadena exhibit anomalous subsidence from 2009 to 2017. The maximum compaction occurred around 2014 with Baytown Shallow recording 164 mm, Baytown Deep 72 mm, and Pasadena 135 mm. The anomalous subsidence exhibits features not related to primary consolidation subsidence (PCS) and secondary consolidation subsidence (SCS) of the Gulf Coast Aquifer System (GCAS). Groundwater level records at the extensometer locations indicate that the anomalous subsidence is not related to groundwater exploitation and creep of the GCAS in this region. Analysis of compaction data for the three sites indicates that the subsidence is partially elastic. Salt dome growth/evolution resulting in activation/reactivation of subsurface and surface faults is proposed as the mechanism responsible for the anomalous subsidence. 

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3. Pasadena City College. LASER-TEC College Profile

   Panayiotou, Chrysanthos (May 2021, Photonics spectra)

   null (Ed.)

   Pasadena City College (PCC) established a curriculum in laser technology (LaserTech) to provide students with the skills required to work with precision optics, lasers, detectors, electronics, and nanotechnology. Local industry and national laboratories have supported the creation of these courses to ensure that students learn the relevant modern laboratory techniques and technologies. Local industrial partners that have interest in PCC LaserTech students come from sectors such as aerospace, advanced manufacturing, biomedicine, entertainment, communications, and defense, as well as others that develop and apply cutting-edge technologies. 

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4. Invited Letter: Undergraduate research as a means to build a creative, resilient, and highly skilled biomanufacturing workforce

   https://doi.org/10.5281/zenodo.8342997  

   Blatti, Jill (January 2023, Journal of advanced technological education)

   As a principal investigator of an undergraduate research group at Pasadena City College (PCC) for the past ten years, I have witnessed the profound impact that the research experience has had on our students. I have observed students as they develop the ability to carry out authentic research projects from the inception to dissemination, design and carry out thoughtful experiments, write meaningful conclusions in light of relevant literature, and present science to peers and at conferences. Undergraduate research gives students the opportunity to work in a laboratory setting early in their career and collaborate with scientists as they learn how to do science themselves. It lays the foundation for future experiences in research; it informs their decision to pursue science; it excites, motivates, and inspires them; it contextualizes what they learn in courses and applies interdisciplinary scientific concepts to emerging technologies. 

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5. Ground vibrations recorded by fiber-optic cables reveal traffic response to COVID-19 lockdown measures in Pasadena, California

   https://doi.org/10.1038/s43247-021-00234-3  

   Wang, Xin; Zhan, Zhongwen; Williams, Ethan F.; Herráez, Miguel González; Martins, Hugo Fidalgo; Karrenbach, Martin (August 2021, Communications Earth & Environment)

   Abstract The COVID-19 lockdown has unprecedently affected the dynamics of our society. As traffic flow is a good proxy for societal activity, traffic monitoring becomes a useful tool to assess the lockdown’s impacts. Here we turned two strands of unused telecommunication fibers in Pasadena, California into a seismic array of ~5,000 sensors and detected ground vibrations caused by moving vehicles along the streets above the cable. We monitor the number of vehicles and their mean speed between December 2019 and August 2020 in high spatial and temporal resolution, and then analyze the traffic patterns change due to the COVID-19 lockdown. Our results show a city-wide decline in traffic volume and an increase in speed due to the lockdown, although the level of impact varies substantially by streets. This study demonstrates the feasibility of using telecommunication fiber optic cables in traffic monitoring, which has implications for public health, economy, and transportation safety. 

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