Topic: Reliability and Performance Modeling of Software Applications and Processes Zoom Teleconference: https://umassd.zoom.us/j/94835216696 Please contact Dr. Lance Fiondella via email at firstname.lastname@example.org for Meeting ID and Passcode. Abstract: Modern society is highly dependent on software-enabled systems, including mission and life-critical systems. High profile failures of these systems damage trust in the maturity of the underlying technology and subsequently create concerns related to system safety and security. In the absence of objective methods to model the reliability of software within complex systems, decision-makers will struggle to deliver dependable and trustworthy systems. In past decades, researchers have proposed a variety of software reliability growth models (SRGM) to assess the reliability of software during phases of test and operation which often possess complicated parametric forms but disregard predictive accuracy. Moreover, most SRGM are restricted to defect discovery data, yet removal of these defects is the practical concern of software engineers. Traditional SRGM have also dedicated limited consideration of factors associated with software testing like the severity of defects. Prior efforts to model defect resolution are primarily based on systems of differential equations and queueing theory. However, these past modeling efforts offer little concrete guidance that software practitioners can relate to or use when attempting to improve their processes. To overcome the limitations noted above, this dissertation presents several modeling contributions including: (i) a framework composed of several SRGM possessing a bathtub-shaped fault detection rate, stable and efficient model fitting algorithms, and assessment with a combination of predictive and information-theoretic measures to justify their increased complexity, (ii) connecting a NASA defect-tracking database to novel models of defect discovery and resolution, including differential equation-based, distributional, and Markovian models, and (iii) a defect resolution prediction model that utilizes a SRGM incorporating covariates through the discrete Cox proportional hazard model. Note: All ECE Graduate Students are ENCOURAGED to join the zoom teleconference. All interested parties are invited to join. Advisor: Dr. Lance Fiondella, Department of Electrical & Computer Engineering, UMASS Dartmouth Committee Members: Dr. Liudong Xing, Department of Electrical & Computer Engineering, UMASS Dartmouth; Dr. Gokhan Kul, Department of Computer & Information Science, UMASS Dartmouth; Dr. Ying Shi, Goddard Space Flight Center, National Aeronautics & Space Administration (NASA) *For further information, please contact Dr. Lance Fiondella via email at email@example.com.
First and Second Year Students! Are you prepared for Selecting courses for Spring Semester 2022? Arts & Sciences majors are invited to meet with an academic advisor from your college for a group advising session designed to help you be ready for registration and to learn how to use COIN effectively. WHERE? Spruce Hall classroom 128 OR Zoom at: https://umassd.zoom.us/j/95492847524?pwd=bk1Ycm9MSURKYmQvVVZ1Z2EveHFKdz09 For Questions please contact Michelle Black at firstname.lastname@example.org, at 508-999-9296, or contact your academic advising office in your college. *Enter Spruce Hall through the main entrance facing Parking Lot 8. Please remember to keep your face covering on at all times you are inside a building.
Mechanical Engineering (MNE) SEMINAR DATE: October 22, 2021 TIME: 2:00 p.m. - 3:00 p.m. LOCATION: Charlton College of Business (CCB), Room 115 SPEAKER: Dr. Jing Wang, SDE Amazon Inc. TOPIC: Deformation of a Compliant Wall in a Turbulent Boundary Layer ABSTRACT: The interactions between a compliant wall and turbulent or laminar boundary layer have been investigated extensively for over 60 years. Most of the studies are focused on turbulent drag reduction or noise suppression. With the development of 3D flow diagnostic techniques like tomographic PIV, or Shake-The-Box, it's able to measure the 3D flow including 3D velocities and 3D pressure field coupled with the compliant surface deformation. Among them, 3D pressure is difficult to measure directly and is forcing the deformation, thus, it's calculated indirectly from 3D velocities. In this talk, I will first present a robust and accurate GPU-based method for direct integration of velocity field to obtain the 3D pressure. This method is applied to the experiment of turbulent channel flow over a compliant surface. The experiment utilized a relatively stiffer compliant wall with Young's modulus of 1 Mpa and had a center-line flow speed (Uc) of 2.5 m/s. The resulting deformation amplitude is too small (20 nm) to affect the near wall flow field, thus a one-way coupling between the flow and the deformation is observed. The deformation has two modes, the fast mode move with Uc and slow mode is advecting at 0.72Uc. Statistics show the positive slow mode deformation is correlated with low pressure which resides in a vortical structure and the negative deformation is located at sweep ejection transition where there is a high pressure. Aiming at revealing the two-way coupling of deformation and turbulent boundary layer, we redesigned the experiment based on the Chase (Chase 1991) model prediction. Careful selections of freestream velocity (U0 = 6.0 m/s) and compliant surface Young's modulus (180 kPa) ensures the deformation amplitude is comparable to the wall unit. In this experiment, a spanwise propagating deformation mode which is aligned in the streamwise direction is observed. This mode does not move with the flow and seems to be associated with the shearr wave. Another mode of deformation advects downstream with 0.66U0 and is preferentially aligned in the spanwise direction. Different with turbulent flow over a rough wall, the near wall velocity profile showing a sharp increase of velocity gradient at 10 wall units. These findings are consistent with recent DNS results by Rosti and Brandt (2017). BIO: Dr. Jin Wang received his Bachelor of Science at University of Science and Technology of China in 2012. Then he moved to Johns Hopkins University to pursue his PhD degree in Whiting School of Engineering under the supervision of Professor Joseph Katz focusing on flow diagnostics and turbulent flow over compliant surfaces. Dr. Wang received his PhD degree in 2019. For more information please contact Dr. Hangjian Ling, MNE Seminar Coordinator (email@example.com). All are welcome. Students taking MNE-500 are REQUIRED to attend! All other MNE BS and MS students are encouraged to attend. EAS students are encouraged to attend. Thank you, Sue Cunha, Administrative Assistant Department of Mechanical Engineering firstname.lastname@example.org
Topic: Designing a Covariance Matrix Tapered MVDR Beamformer that is Universal Over Notch Width Location: DION 109 ABSTRACT: Adaptive beamformers suppress interferers and reduce background noise by adjusting the complex array weights in response to the received array data. Practical adaptive beamformers like the minimum variance distortionless response (MVDR) beamformer balance these two competing requirements while maintaining unity gain for the desired look direction. The MVDR beamformer places sharp notches in the location of the interferers to minimize the interferer output power. For stationary sources, MVDR is an optimal beamformer, but the performance of MVDR degrades in the presence of moving interferers. Interferers moving at different bearing rates reside inside beamformer resolution cells for different durations, challenging MVDR's ability to place accurate notches in the interferer direction. Consequently, the moving interferer is generally no longer within the single sharp notch location. Covariance Matrix Taper (CMT) MVDR mitigates moving interferers by creating wider notches in the beampattern. However, the CMT increases the notch width by a fixed amount, and the best notch width depends on the unknown bearing rate of each interferer which may change over time. A single fixed CMT notch width cannot suppress all moving interferers perfectly. Therefore, the need for different notch widths for different bearing rates leads us to the possibility of designing a universal algorithm for the notch width parameter. The universal CMT beamformer asymptotically achieves performance rivaling or exceeding the performance of the best fixed notch width CMT beamformer in a set by computing its array weights as a performance weighted blend of the array weights for the fixed notch width beamformers. Note: All ECE Graduate Students are ENCOURAGED to attend. All interested parties are invited to attend. Open to the public. Advisor: Dr. John R. Buck Committee Members: Dr. Dayalan P. Kasilingam and Dr. Paul J. Gendron, Department of Electrical & Computer Engineering, UMASS Dartmouth *For further information, please contact Dr. John R. Buck via email at email@example.com.
The UMass Brut collaboration between UMass Dartmouth and UMass Amherst is sponsoring several free public events on October 22, beginning at 5:30 p.m. On the path between the UMD Library and the College of Visual and Performing Arts, artist Daniel DeLuca will install sculptural, participatory structures (frames with chalkboards) and will invite pedestrians and UMass Brut symposium participants to respond to their encounter with UMD's theatrical 'brutalist' architecture (designed by renowned architect Paul Rudolph). At 6:00 P.M. inside CVPA's voluminous atrium, and in conjunction with the closing of the Norman Ives exhibition, enjoy Kelvin Dickinson's presentation, "A Discovery of Opposites: Paul Rudolph & the Poetics of Brutalism at UMass Dartmouth." Mr. Dickinson, President of the Paul Rudolph Heritage Foundation, will pause during his lecture so CVPA painting instructor David Burr can present a participatory artwork. In it, he will invite listeners to experience Rudolph's cavernous and cave-like spaces by following a 3,000-foot rope 'drawing' that winds through the CVPA. At the conclusion of the presentation (or just after sunset), step outside for a video projection event celebrating the UMD campus. The series of videos, a montage of colorful images accompanied by sound, will be projected on the Maclean Campus Center and CVPA exterior walls. The videos will highlight the campus history, architecture, and expansion, and the University's connection to local communities. The work is produced by the students in Professor Mark Millstein's Video Projection Mapping class in the Art and Design Department of the College of Visual and Performing Arts. This evening event is part of a two-day collaborative symposium titled, "Brutalism + the Public University: Past, Present and Future" sponsored by UMass Dartmouth and UMass Amherst. Take a moment to register for this unique symposium that brings together a team of nationally renowned scholars interested in concrete Brutalist architecture and preservation of the architectural icons. Free to the UMass community and enrolled college students. Be sure to register for the Symposium this Friday, October 22 (8 am-8:30 pm) at UMass Dartmouth and Saturday, October 23 (8 am-5:30 pm) at UMass Amherst. Space is limited, but we're holding a seat for you. for more details, visit UMassBrut at https://sites.google.com/umass.edu/umassbrut/umassbrut_symposium.
Media Night Spruce 130 or 128, Friday 8pm-10pm Spaces of Rest will be weekly collaborative practices of resting and reflecting. These spaces will be for students to come together to share space through engaging with meditation, media, and conversations. The media nights will be moments of reading, watching, or listening to sci-fi and Afrofuturist content. *Enter Spruce Hall through the main entrance facing Parking Lot 8. Please remember to keep your face covering on at all times you are inside a building. For more info - https://spacesofrest.weebly.com or email Clareese Hill, Artist in Residence at firstname.lastname@example.org Clareese Hill is the 2021-2022 UMass Dartmouth CVPA Artist in Residence. She is a practice-based researcher. She explores the validity of the word "identity" through her perspective as an Afro-Caribbean American woman and her societal role projected on her to perform as a Black feminist academic. She has performed lectures at Royal College of Art, Goldsmiths University of London, University of Sussex, CUNY Graduate Center, The Chicago Art Department, and Smack Mellon in Brooklyn. She has exhibited her research internationally in Chicago, New York, California, London, France, and cyberspace. Clareese was a 2020 Rapid Response for a Better Digital Future fellow (Phase One). Clareese has published academic essays in THEOREM Journal, Architecture and Culture Journal, and has an upcoming article in Antennae, The Journal of Nature and Culture. Clareese holds an MFA from The School of the Art Institute of Chicago (SAIC).
Modern twentieth century architecture has always inspired a variety of passionate responses, especially the "brutalist" buildings at the University of Massachusetts at Dartmouth and Amherst. To explore their architectural heritage and its preservation, the two campuses will hold a two-day symposium, Brutalism + the Public University: Past, Present, and Future on October 22 and 23. The symposium, part of the UMassBrut collaborative, will provide a unique platform that brings together a team of distinguished scholars, industry professionals, artists, and passionate citizens with an interest in the preservation of mid to late twentieth-century architecture. The symposium's goal is to create a dynamic, cross-disciplinary conversation among all participants on how to provide stewardship of these buildings for the future. Each day will feature professional workshops, scholarly lectures, guided campus tours, public art exhibitions, and creative activities (including video projections on the architectural facades). Participants will discuss Brutalist architecture (history and design) and explore the issues of preservation and adaption unique to these modernist concrete structures. Both campuses contain extensive examples of mid-century Brutalist concrete architecture by world-renowned modernist architects including Paul Rudolph, Marcel Breuer, Kevin Roche, Hugh Stubbins, and Edward Durell Stone. These landmark structures will be accessible in Dartmouth on Friday, October 22, and in Amherst on Saturday, October 23. Keynote presentations on both days will include Chandler McCoy and Ana Paula Arato Gonalves of the Getty Conservation Institute's Conserving Modern Architecture Initiative. Speakers include faculty from UMass and visiting faculty from Brown, Harvard, Roger Williams, Rutgers, Columbia and the University of South Carolina. Other speakers include distinguished professionals from the fields of architecture, historic preservation, engineering, construction, lighting, graphic, interior design, and professional staff from UMass and the Division of Capital Asset Management and Maintenance. The UMassBrut group, organizers of the symposium, consists of UMass Dartmouth and UMass Amherst faculty, staff, students, and interested parties dedicated to celebrating, preserving, and reimagining mid-century Brutalist public architecture. The group will continue to organize events and engage others in the UMass system and the public at large. Contact: Allison Cywin at email@example.com.
Wed Night 8-9pm and Sat Morning at 10-11am Spaces of Rest will be weekly collaborative practices of resting and reflecting. These spaces will be for students to come together to share space through engaging with meditation, media, and conversations. The meditations will be twice a week and will be a space of relaxing, listening, and clearing the mind. *Enter Spruce Hall through the main entrance facing Parking Lot 8. Please remember to keep your face covering on at all times you are inside a building. For more info - https://spacesofrest.weebly.com or email Clareese Hill, Artist in Residence at firstname.lastname@example.org Clareese Hill is the 2021-2022 UMass Dartmouth CVPA Artist in Residence. She is a practice-based researcher. She explores the validity of the word "identity" through her perspective as an Afro-Caribbean American woman and her societal role projected on her to perform as a Black feminist academic. She has performed lectures at Royal College of Art, Goldsmiths University of London, University of Sussex, CUNY Graduate Center, The Chicago Art Department, and Smack Mellon in Brooklyn. She has exhibited her research internationally in Chicago, New York, California, London, France, and cyberspace. Clareese was a 2020 Rapid Response for a Better Digital Future fellow (Phase One). Clareese has published academic essays in THEOREM Journal, Architecture and Culture Journal, and has an upcoming article in Antennae, The Journal of Nature and Culture. Clareese holds an MFA from The School of the Art Institute of Chicago (SAIC).
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The College of Visual and Performing Arts (CVPA) at UMass Dartmouth is proud to present Norman Ives: Constructions & Reconstructions, in the CVPA Campus Gallery from September 7 through October 23. This major exhibition of Ives's work as artist and designer showcases some early works that will be on display for the first time. There will be a reception for the exhibition on September 23 from 5 to 7 p.m. featuring exhibition curator John T. Hill. All attendees must wear a mask when inside any building at UMass Dartmouth. The exhibition contains Ives's abstract typographic art, innovative posters and brochures, and elegant symbol designs that have inspired generations of designers and artists. Ives's range of talent became evident in 1967 when his eight-foot square painting, Number 3-L, was selected for the 1967 Whitney Annual Exhibition of American Artists. That same year, the Museum of Modern Art mounted an exhibition titled 3 graphic designers featuring the work of Norman Ives, Massimo Vignelli, and Almir Mavignier. The exhibition is curated by John T. Hill, author, designer, and a former student and faculty colleague of Ives. Ives and Hill were part of Yale University's Department of Graphic Design led by Alvin Eisenman, whose orchestration of groundbreaking faculty reshaped the field of commercial art into a more demanding profession, graphic design. Hill produced the first comprehensive account of Ives's work in his book Norman Ives: Constructions & Reconstructions, in 2020. "In the history of art, there are striking examples of works rising to a level called timeless: Clovis points, Corinthian helmets, Paul Klee's drawings, and Josef Albers's paintings," noted Hill. "Ives's work defines a high point in the teaching and practice of graphic design. His symbols communicate with nuance and clarity, ideas reaching a wide audience. His innovations were grace notes for graphic design. This exhibition marks Ives's passion for letterforms, which became his lyrical strokes, their construction and reconstruction defining his work." Ives's paintings and collages are collected by major museums including the Guggenheim Museum and Yale University Art Gallery. Ives had numerous exhibitions, notably the Chicago Art Institute, Institute of Contemporary Arts, Boston, and the Neuberger Gallery at SUNY Purchase. Jan Fairbairn, who teaches graphic design and typography at UMass Dartmouth, initiated the exhibition after experiencing Ives's work while studying Graphic Design at Yale School of Art where she first met John Hill. "Bringing Ives's work to UMass Dartmouth is like importing Ives's genius and sensibilities. He is recognized as an important early twentieth-century modernist. My students and everyone on campus will have the opportunity to absorb this artwork up close, and learn from Ives's sophisticated abstract compositions," said Fairbairn. Norman Ives: Constructions & Reconstructions will be shown in the CVPA Campus Gallery at 285 Old Westport Road in Dartmouth, Massachusetts from September 7 through October 23. More information: www.umassd.edu/news/2021/cvpa-norman-ives-constructions-reconstructions.html www.umassd.edu/cvpa/galleries Viera Levitt, email@example.com, #8555