ThinkSpatial: Konstadinos Goulias

thinkspatial_logo

On Tuesday, April 28, 2020, The UCSB brown-bag forum on spatial thinking presents

Life Cycle Stages, Daily Contacts, and Activity-Travel Time Allocation for the Benefit of Self and Others

 

Konstadinos G. Goulias

Department of Geography
University of California, Santa Barbara

11:30 a.m. (PST) Tuesday, April 28, 2020

Zoom : https://ucsb.zoom.us/j/96140245863

Abstract:

In this research, we study the correlation between life cycle stages and time allocation for the benefit of self and others. Life cycle stages are defined based on age, employment, family status, and disabilities. Time allocation is classified based on the people with whom each respondent came in contact and for whom he or she performed activities and travel. Based on a two-day time use diary, daily time allocation is classified in social fields that we define as family, friends, schoolmates, co-workers, clubmates, and others. We also include time for sleeping and activities and travel for one’s self. The data analysis creates a taxonomy using cluster analysis of time-of-day activity sequences, complexity of time schedules, and uncovers its correlation with life cycle stages.

Bio:
Since 2004, Konstadinos (Kostas) G. Goulias has been a Professor of Transportation at the Department of Geography at the University of California, Santa Barbara. From 1991 to 2004 he was Professor of Transportation in the Department of Civil and Environmental Engineering of PennState University, where he also directed research centers. His research is on Large Scale Transportation Systems Modeling and Simulation, Travel Behavior Dynamics, Sustainable Transportation, Smart Cities, Economic Geography, Travel Survey Methods, Geocomputation and Geoinformation. He chairs the International Association for Travel Behaviour Research and he is the co-editor-in-chief of Transportation Letters an international peer reviewed journal published by Taylor and Francis.  He received a Laurea (5 years and a thesis equivalent to MS) in Engineering from University of Calabria (Italy) in 1986, an MS in Engineering from University of Michigan, Ann Arbor, in 1987, and a PhD in Engineering from University of California Davis, in 1991.

The objectives of the ThinkSpatial brown-bag presentations are to exchange ideas about spatial perspectives in research and teaching, to broaden communication and cooperation across disciplines among faculty and graduate students, and to encourage the sharing of tools and concepts.

Please contact Emmanuel Papadakis (epd@ucsb.edu) to review and schedule possible discussion topics or presentations that share your disciplinary interest in spatial thinking.

Follow spatial@ucsb on Twitter | Google+ | Google Calendar

ThinkSpatial: George Baryannis

thinkspatial_logo

On Tuesday, April 21, 2020, The UCSB brown-bag forum on spatial thinking presents

Qualitative Spatial Reasoning Using Answer Set Programming

 

George Baryannis

Department of Computer Science
University of Huddersfield, UK

11:30 a.m. Tuesday, April 21, 2020 | Zoom meeting room:

https://ucsb.zoom.us/j/96140245863

Abstract:

Spatial (and temporal) information is often expressed using qualitative terms such as natural language expressions instead of coordinates; reasoning over such terms has several practical applications, such as naval traffic monitoring, warehouse process optimization and robot manipulation. Well over 40 qualitative calculi have been proposed so far, including Allen’s interval algebra and the Region Connection Calculus. Reasoning with such calculi has been the focus of extensive research within the wider AI community, with a number of specialized reasoning tools developed. One barrier to the wide adoption of these tools is that only qualitative reasoning is supported natively, when real-world problems most often require a combination of qualitative and other forms of reasoning.

I will discuss research to overcome this barrier (conducted at the University of Huddersfield, UK and the University of Calabria, Italy),  focusing on using Answer Set Programming (ASP) as a unified formalism to tackle problems that require qualitative reasoning in addition to non-qualitative reasoning. ASP is a logic-based knowledge representation and reasoning approach that includes a rich but simple modeling language and is capable of handling search problems of high complexity. Research is motivated by two case studies: reasoning about the  relations among large numbers of trajectories and determining optimal coverage of telecommunication antennas.

Bio:
George Baryannis is Senior Lecturer (Associate Professor) at the Department of Computer Science of the University of Huddersfield, UK. He received his Dipl.Eng. in Electronic and Computer Engineering from the Technical University of Crete, Greece and his M.Sc. and Ph.D. in Computer Science from the University of Crete, Greece. His teaching and research interests lie within Artificial Intelligence, mainly focusing on knowledge representation and reasoning, machine learning and interpretability, as well as applications in supply chain risk management, smart homes and service-oriented computing.

Material:

ThinkSpatial-QSRASP

 

The objectives of the ThinkSpatial brown-bag presentations are to exchange ideas about spatial perspectives in research and teaching, to broaden communication and cooperation across disciplines among faculty and graduate students, and to encourage the sharing of tools and concepts.

Please contact Emmanuel Papadakis (epd@ucsb.edu) to review and schedule possible discussion topics or presentations that share your disciplinary interest in spatial thinking.

Follow spatial@ucsb on Twitter | Google+ | Google Calendar

ThinkSpatial: Claudio Fogu

thinkspatial_logo

On Tuesday, March 10 June 9, 2020, The UCSB brown-bag forum on spatial thinking presents

The Fishing Net and the Spider Web—

Making Italians Making Southerners

 

Claudio Fogu

Department of French and Italian
University of California, Santa Barbara

12:00 p.m. Tuesday, March 10 June 9, 2020 | 3512 Phelps Hall (map)

 

Abstract:

This talk will discuss the network-theory approach of Grad Malkin’s study of the Archaic Mediterranean and its extension to the history of the modern Mediterranean. Fogu will focus in particular on the role played by the Italian peninsula, coastal communities, and islands in the oscillation among distributed, centralized, and decentralized patterns of connectivity in the Mediterranean.

Bio:

Claudio Fogu moved to Los Angeles in 1983 to study film at UCLA, and later pursued a Ph.D. in History. He taught at Ohio State University and then at USC. Since moving to UCSB in 2005 he has been an Associate Professor of Italian Studies and teaches courses on Italian cultural history and memory, with an emphasis on film and visual culture. He is author of multiple books and is current President of the California Chapters of the American Association of University Professors (CA-AAUP), President of the UC Santa Barbara Faculty Association (UCSB), and Vice-President for External Affairs of the Consortium of UC Faculty Associations (CUCFA).

 

The objectives of the ThinkSpatial brown-bag presentations are to exchange ideas about spatial perspectives in research and teaching, to broaden communication and cooperation across disciplines among faculty and graduate students, and to encourage the sharing of tools and concepts.

Please contact Werner Kuhn (werner@ucsb.edu) to review and schedule possible discussion topics or presentations that share your disciplinary interest in spatial thinking.

Follow spatial@ucsb on Twitter | Google+ | Google Calendar

[Canceled] Spatial Tech Lunch: Roland Knapp

Canceled due to COVID19 outbreak. Any updates will be posted here.

 

On Wednesday, March 11, from 12:00–1:00 pm please join us for the next Spatial Technology Lunch in the Center for Spatial Studies (Phelps Hall 3512). This semi-regular series, hosted by spatial@ucsb, aims to promote discussion and interaction within the university’s spatial technology community. Please RSVP here by Saturday, March 7. Sandwiches and drinks will be provided.

Spread of a virulent amphibian pathogen across the Sierra Nevada

Dr. Roland Knapp

 

Abstract: The global emergence of the amphibian chytrid fungus (Batrachochytrium
dendrobatidis: “Bd”) has caused the extinction of at least 90 frog species and the decline of
hundreds more. This impact has been called the most spectacular loss of vertebrate
biodiversity due to disease in recorded history. Bd is believed to have originated in Asia, but is
now distributed worldwide due to global commerce. In California’s Sierra Nevada mountains,
Bd emerged in the 1960s and subsequently spread across the range, causing precipitous
declines of the once-common mountain yellow-legged frog and its eventual listing under the
U.S. Endangered Species Act. Describing this spread, including identifying factors associated
with its arrival in frog populations, would allow better prediction of future spread and aid in the
identification of possible vectors. In this presentation, I will provide details on the patterns of
Bd spread in the Sierra Nevada and solicit input on how these data could best be analyzed.

Bio:
Roland Knapp is a research biologist at the University of California Sierra Nevada
Aquatic Research Laboratory. His research interests include the population and conservation
biology of endangered mountain yellow-legged frogs in California’s Sierra Nevada mountains,
and the community ecology of montane lake ecosystems. The landscape-scale surveys of
aquatic habitats in the southern Sierra Nevada (7,000+ lakes and ponds) that he led form the
basis for ongoing amphibian and lake recovery efforts in Sequoia, Kings Canyon, and
Yosemite National Parks, and beyond. His current research focuses on the recovery of
mountain yellow-legged frogs in the presence of the recently-emerged amphibian chytrid
fungus (Batrachochytrium dendrobatidis).

 

Have any questions for Dr. Knapp before or after the discussion? Give him a shout at roland.knapp@ucsb.edu.

ThinkSpatial: Ambuj Singh

thinkspatial_logo
On Tuesday, March 3, 2020, The UCSB brown-bag forum on spatial thinking presents

Inferring Network Structure and Flows using Partial Observations

Ambuj Singh

University of California Santa Barbara

12:00 p.m. Tuesday, January 21, 2020 | 3512 Phelps Hall (map)

Network

Abstract:

Predicting network structure and flows on edges is a precondition to effective planning and disaster response in critical infrastructure networks. I will summarize some ideas inspired by network science, physical modeling, and machine learning to determine this information from incomplete observations. Using both physical domain-specific and data-driven approaches, these algorithms address diverse problems including: the reconstruction of network topology and parameters, the estimation of network flows, the optimal selection and scheduling of multiple types of sensors, and the modeling of interdependencies in multilayer networks. The overall goal is to develop a rigorous theory for solving the inverse problem of edge and flow determination from observations of critical infrastructure networks.

Bio:

Ambuj Singh is a Professor of Computer Science at the University of California, Santa Barbara, with part-time appointments in the Biomolecular Science and Engineering Program and the Technology Management Program. He received a B.Tech. degree from the Indian Institute of Technology, Kharagpur, and a Ph.D. degree from the University of Texas at Austin. His research interests are broadly in the areas of network science, machine learning, social networks, and bioinformatics. He has published 200 technical papers over his career. He has led a number of multidisciplinary projects including UCSB’s Information Network Academic Research Center funded by the Army, Interdisciplinary Graduate Education Research and Training (IGERT) program on Network Science funded by the NSF, and the Multidisciplinary University Research Initiative (MURI) on Network Science of Teams (https://muriteams.cs.ucsb.edu/) funded by the U.S. Army. He has graduated approximately 50 Ph.D., M.S., and postdoctoral students over his career, including 26 Ph.D. students.

The objectives of the ThinkSpatial brown-bag presentations are to exchange ideas about spatial perspectives in research and teaching, to broaden communication and cooperation across disciplines among faculty and graduate students, and to encourage the sharing of tools and concepts.

Please contact Werner Kuhn (kuhn@ucsb.edu) to review and schedule possible discussion topics or presentations that share your disciplinary interest in spatial thinking.

Follow spatial@ucsb on Twitter | Google+ | Google Calendar

ThinkSpatial: Anna Trugman

thinkspatial_logo

On Tuesday, March 17, 2020, The UCSB brown-bag forum on spatial thinking presents

The Geography of Forest Hydraulic Trait Compositions: Observed Patterns, underlying Mechanisms, and Future Implications

 

 

Anna Trugman

University of California Santa Barbara

12:00 p.m. Tuesday, March 17, 2020 | 3512 Phelps Hall (map)

 

ABSTRACT:

Tree hydraulic traits determine plant water use and tree vulnerability to drought stress, thereby affecting forest productivity and the movement of water between the land surface and the atmosphere. Here, I leverage an extensive trait database and a long-term continental forest plot network to map changes in community trait distributions and quantify “trait velocities” (the rate of change in community-weighted traits) for different regions and different forest types across the U.S. from 2000 to the present. I find evidence for shifts towards communities with more drought tolerant traits driven by tree mortality. I then review my ongoing work looking at the extent to which community trait compositional changes may buffer forest productivity and water fluxes in the near term from the effects of climate change.

BIO:

Anna Trugman is an Assistant Professor in the Geography Department. Her lab studies how changes in climate and water availability affect ecosystem diversity, productivity, and resilience across large spatial scales. Her research approach integrates field measurements with numerical ecosystem models to gain new insight into the biological processes affecting climate-vegetation interactions. Trugman received her Ph.D. in Atmospheric and Oceanic Sciences from Princeton University in 2017 and her B.S. in Geological and Environmental Science from Stanford University in 2011. From 2017–2019 Trugman was a USDA NIFA Postdoctoral Fellow in the School of Biological Sciences at the University of Utah.

 

The objectives of the ThinkSpatial brown-bag presentations are to exchange ideas about spatial perspectives in research and teaching, to broaden communication and cooperation across disciplines among faculty and graduate students, and to encourage the sharing of tools and concepts.

Please contact Werner Kuhn (kuhn@ucsb.edu) to review and schedule possible discussion topics or presentations that share your disciplinary interest in spatial thinking.

Follow spatial@ucsb on Twitter | Google+ | Google Calendar

Save the Date: Spatial Lightning Talks 2020

Save the Date!

The UCSB Center for Spatial Studies presents the 2020 Spatial Lightning Talks on Tuesday, February 11 at 12:00 p.m. This annual series of 3-minute lightning talks brings together speakers from across the UCSB campus as well as the local community to enlighten the crowd on a broad range of spatial topics. This fast-paced, interdisciplinary event is a great opportunity to hear speakers from across campus and in the local community share their work and special interests. Program to be published soon.

When: Tuesday, February 11, 2020 from 12:00 to 1:15 p.m. Lunch will be provided beginning at 11:45 a.m. Where: Interdisciplinary Humanities Center, McCune Conference Room (6020 HSSB).
RSVP HERE. Hope to see you there!

Spatial Lightning Talks 2020

The UCSB Center for Spatial Studies presented the 2020 Spatial Lightning Talks on Tuesday, February 11 at 12:00 p.m. This annual series of 3-minute lightning talks brought together speakers from across the UCSB campus as well as the local community to enlighten the crowd on a broad range of spatial topics. This fast-paced, interdisciplinary event gave the audience a great opportunity to hear about diverse topics as speakers shared their work and special interests. The 2020 talks featured some stars from Geography, English, Statistics, Global Studies, Marine Science, as well as off-campus leaders (General Electric, SB Women in STEM).

LightningTalks2020_Digital