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Monday, August 23, 2021
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2:00 PM
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3:00 PM
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DEOS PhD Proposal Defense - Siddhant Kerhalkar
- Location: > See description for location
- Contact: > See Description for contact information
- Description: The School for Marine Science and Technology
Department of Estuarine and Ocean Sciences
PhD Proposal Defense Announcement
"On The Diurnal Warm Layers in the Bay of Bengal"
by
Siddhant Kerhalkar
Advisor:
Dr. Amit Tandon, School for Marine Science & Technology, University of Massachusetts Dartmouth
Committee Members:
Dr. Miles Sundermeyer, SMAST, University of Massachusetts Dartmouth
Dr. J. Thomas Farrar, Physical Oceanography Department, Woods Hole Oceanographic Institution
Dr Kenneth Hughes, College of Earth, Ocean and Atmospheric Sciences, Oregon State University
Monday, August 23, 2021
2:00 pm-3 pm
SMAST E, Rooms 101,102,103
And via Zoom
Abstract:
Monsoons over the Indian subcontinent result in copious seasonal rainfall during May to September. The rain is dominated by inherent intra-seasonal oscillations with periods of a few weeks. These Monsoon Intra-Seasonal Oscillations (MISO) traverse the Bay of Bengal (an ocean basin located to the east of India, BoB hereafter) at various time scales bringing periods of relatively high rainfall, or active phases, followed by periods of little or no rainfall, called Break phases. The air-sea interaction during the phases is also dramatically different. MISO are not well predicted, and errors in simulating and predicting MISO affect the weather
forecasting across the globe.
Recent studies show that improvements in MISO forecasting requires (i) better understanding of the ocean-atmosphere coupling at multiple scales, and (ii) better representation of upper ocean stratification. The competition between stratifying effect of daytime trapping of solar heating, and the destabilizing effect of momentum trapped by winds, leads to diurnal warm layers (DWL) formation, which has not been studied before for the BoB. In addition, BoB is anomalously fresh and thus salinity plays a unique role. DWL evolution has an impact on the diel cycle of SSTs and air-sea interaction at sub-daily scales. Since they affect both (I) and (ii), in this thesis, we will understand and characterize DWLs in BoB and their interactions with other mesoscale and submesoscale processes. The observations analyzed in this work are from an international USA-India collaboration, MISOBOB (Monsoon Intra-Seasonal Oscillations in BoB), which
brought teams of scientists from both countries to intensively observe air-sea interaction and upper ocean processes using many autonomous and ship-based assets.
In Chapter 2, we describe the meteorological forcing and upper ocean vertical structure from the observational cruise. We also evaluate the spatial gradients in the diel cycles of SST for an oceanic mesoscale eddy O(500 km) across. During the break phase, DWLs are prominent. We explore the vertical structure of DWLs in BoB and compare them to Western Pacific. Salinity governed stratification modifies the nature of DWLs.
In Chapter 3, we propose to explore in greater detail two curious cases of DWLs in BoB. observations show different deepening rates of DWLs. We aim to understand the reasons behind this using 1-D and 3-D ocean models. In the second case, we observe large differences in the diel cycles of SST at two different drifter locations. Our working hypothesis is that these differences in diel cycles are due to the differences in background
stratification and the differences in optical properties of water. We propose to explore the DWLs in coastal waters using models.
In Chapter 4, we explore the lateral inhomogeneities in the DWL. Trapping of momentum within the DWL leads to the formation of a diurnally
varying jet which can cause lateral advection. Hence DWLs near a front could re-stratify the ocean. We aim to study the interaction of DWLs and fronts using process ocean models.
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Join Zoom Meeting
https://umassd.zoom.us/j/97864820665?pwd=Ums4T1BwSGJqN2RHYWNHZEZtL0dyQT09
Meeting ID: 978 6482 0665
Passcode: 465533
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For more information please contact Sue Silva-s1silva@umassd.edu
- Topical Areas: School for Marine Sciences and Technology, SMAST Seminar Series
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2:30 PM
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3:30 PM
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Student Employment Zoom Lab
- Location: > See description for location
- Contact: > See Description for contact information
- Description: Topic: Student Employment Zoom Lab
Time: 2:30-3:30pm
Join Zoom Meeting
https://umassd.zoom.us/j/91381167644?pwd=YVcwWVpjQWtla3grQlllUFUxbm50dz09
For more information, contact Stuemployment@umassd.edu or at 508-999-8177.
- Topical Areas: Students, Students, Graduate, Students, Law, Students, Undergraduate, Financial Aid
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Marc St. Pierre: Black & White - Star Store Campus
- Location: > See description for location
- Cost: 0
- Contact: University Art Gallery
- Description: Marc St. Pierre: Black & White
Location: University Art Gallery, Star Store Campus, Downtown New Bedford, MA
Open through September 9, 2021
Reception: AHA! Night, Thursday, August 12, 6-8 pm
Gallery hours: Mon-Fri 9 am - 6 pm and until 9 pm during AHA! Nights (second Thursday of every month)
The University Art Gallery in New Bedford is proud to present Black & White, an exhibition by a beloved UMass Dartmouth professor, the late Marc St. Pierre (June 23, 1952 - December 2, 2019), featuring a selection of mixed media drawings and collage with encaustic, as well as black and white photography.
Drawings created between 2008 and 2012, layered geometric elements, and abstract forms create a rich and poignant experience filled with wonder and exploration. They took inspiration from the 'man-made', architectural plans, diagrams, and maps of early explorers. In his artist statement from 2012, Marc said,“As the drawing process evolves, organic shapes and gestural lines are introduced over the groundwork in transparent overlays. This provides a counterpoint to the precision associated with the geometry and acts as a multiple exposure in photography. This pictorial space becomes a dialog of random marks that combines the constructed with the unsystematic. My drawings intend to move the eye within an abstract and shallow picture plane in a gradual release of time.
The illusion of a 'deep space' in Marc's work, invites visitors into a complex, hazy, and multi-dimensional world of collage and encaustics that are presented in smaller formats in the exhibition. Describing his process in 2017, Marc wrote, "First, I use a variety of printmaking processes as a departure for recording marks, surfaces, and layers. This becomes a collage groundwork that allows me to invent the abstract equivalent of land patterns such as the meeting point of landmasses and water, for example. Secondly, additional layers of tracings from actual maps and topographic patterns are introduced. These drawings become a physical overlay suspended in translucent wax." Curiosity and the connection between the creative and scientific, as well as an equally strong interest in observing the tangible are also very much a part of Marc's pinhole camera work shown at Crapo Gallery.
After his retirement in 2017, Marc was often seen counting the time of his exposures while photographing various New Bedford locations. According to Gallery Director, Viera Levitt, "Marc would talk about taking his pinhole photographs, leaving for these expeditions from the Star Store Campus with a repurposed box readied with a small hole for capturing images directly on the photo paper. He enjoyed telling stories to his impromptu audiences including the building guard, about the random passers-by, observing his 'mysterious box' on the ground, ready to 'shoot'! It was indeed magic to see the one-of-a-kind monotypes he was able to capture with such simple, but skilled technique and his great patience for experimentation."
The exhibition is open through September 9 during the gallery hours Mon-Fri 9 am-6 pm and until 9 pm during AHA! Nights (the second Thursday of every month). The special reception is planned for Thursday, AHA! Night, August 12, from 6 to 8 pm.
More information about the exhibition, please visit
www.umassd.edu/cvpa/universityartgallery
For information about the Marc St. Pierre Memorial Scholarship, please visit giving.umassd.edu/stpierre.
Please Note:
Masks are encouraged, but not required for fully vaccinated individuals.
Please maintain a 6-foot distance from others.
Large bags, food, and beverages are not allowed in the gallery.
If you or a member of your party has or has had cold or flu-like symptoms, do not visit the gallery until after everyone is well and has completed a medically recommended quarantine period.
facebook.com/UMassDartmouthGalleries
instagram.com/UMassDartmouthGalleries
- Link: umassd.edu/cvpa/galleries
- Topical Areas: Alumni, Faculty, General Public, Staff and Administrators, Students, University Community, Art Education, Artisanry, College of Visual and Performing Arts, Fine Arts
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10:00 AM
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12:00 PM
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ECE Master of Science Thesis Defense By Yegor Shea
- Location: > See description for location
- Cost: Free
- Contact: ECE: Electrical & Computer Engineering Department
- Description: Topic: Evaluating The Effectiveness on Using Electroencephalography as a Form of User-Authentication
Zoom Teleconference: https://Umassd.Zoom.Us/J/95126968437
Abstract:
The purpose of this study will be to evaluate the effectiveness on using Electroencephalography (EEG) as a biometric. EEGs are traditionally used in the medical field to record voltage fields to detect and monitor medical conditions. This analysis utilizes several studies that explore different configurations that could be applicable to a biometric application. These studies utilize a Brain-Interface Machine (BIM) in conjunction with neural network classification models. BIM can detect and record voltage fields from the scalp. The voltage field recordings are used as an input to a neural network. The hidden layer of the neural network consists of an algorithm to classify the recordings. Utilizing these concepts, the recommended experiments outline a method to measure the effectiveness of using EEG as a biometric. Each experiment requires the participates to think of an instance of a number or phrase which will then be processed using different neural network configurations. The use of EEG as a biometric variable can be very beneficial as everyone has unique neural measurements, like that of a fingerprint. To create a safe and effective method of authentication, EEG measurements can become a crucial variable in the development of a new authentication scheme making it difficult for hackers to intrude.
NOTE: All ECE Graduate Students are ENCOURAGED to join the zoom teleconference.
All interested parties are invited to join.
Advisor: Dr. Honggang Wang
Committee Members: Dr. Lance Fiondella and Dr. Hong Liu, Department of Electrical & Computer Engineering, UMASS Dartmouth
*For further information, please contact Dr. Honggang Wang via email at hwang1@umassd.edu.
- Topical Areas: General Public, University Community, College of Engineering, Electrical and Computer Engineering
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12:30 PM
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2:30 PM
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BMEBT Doctoral Dissertation Defense by Rachana Vaidya
- Location: Online
- Contact: > See Description for contact information
- Description: BMEBT Doctoral Dissertation Defense by
Rachana Vaidya
Date: Monday, August 23, 2021
Time: 12:30pm
Location: TXT 219 also via Zoom
Zoom Conference Link:
https://umassd.zoom.us/j/99120759030?pwd=UkE4T1EwdHFWKzJwSGp3Sk8xZXlXQT09
Topic:
Diabetes Associated Alteration in Osteocyte Regulations of Bone Remodeling
Abstract:
The prevalence of type 2 diabetes (T2D) is rapidly growing due to increased obesity resulting from changing lifestyles. Thus, T2D has become a major health concern with more than 400 million people affected worldwide. Furthermore, the risk of osteoporotic bone fractures is increased in diabetic patients, and bone fragility has been recently recognized as a major diabetic complication. Because the fracture risk is independent of any change in bone mineral density, it is likely that the deterioration of bone tissue quality is one key cause of bone fragility. Among the components of poor bone quality are the accumulation of collagen cross-links known as advanced glycation end-products (AGEs). AGEs are a kind of irreversible chemical product that result from non-enzymatic glycation of proteins. AGEs are known to cause dysfunction of bone cells such as osteocytes, although the mechanisms remain poorly understood. Our goal is to investigate how diabetes-related factors such as chronic hyperglycemia and glycation affect the function of osteocytes, and if metformin, a commonly prescribed diabetic drug is beneficial to these cells, using the novel OCY454 cell line. We hypothesize that hyperglycemia and AGEs negatively impact bone quality, and that this occurs by increasing bone resorption markers and inflammatory markers in osteocytes. We also hypothesize that metformin via its anti-glycemic and anti-glycation properties, inhibits the induced inflammatory response and helps in maintaining the bone remodelling process in osteocytes. This work will allow us to differentiate between hyperglycemia-induced and AGEs-induced response in osteocytes, and to check the effectiveness of metformin in inhibiting these responses to improve the cellular function of osteocytes. Overall, this work will help to understand how osteocytes play a role in increased fracture risk in diabetic patients to develop treatment therapies that prevent the formation of AGEs for clinical management of diabetic patients.
ADVISOR(S):
Dr. Lamya Karim, Department of Bioengineering (lkarim@umassd.edu, 508.999.8560)
COMMITTEE MEMBERS:
Dr. Tracie Ferreira, Department of Bioengineering
Dr. Xiaofei Jia, Department of Chemistry & Biochemistry
Dr. Paola Divieti, Department of Molecular & Cell Biology Boston University
NOTE: All BMEBT Graduate Students are ENCOURAGED to attend.
- Topical Areas: Faculty, Staff and Administrators, Students, Students, Graduate, Students, Undergraduate, Bioengineering, Civil and Environmental Engineering, College of Engineering, Computer and Information Science, Co-op Program, Electrical and Computer Engineering, Mechanical Engineering, Physics
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