Title

Topic

  • ‘A Unified Approach for Resilience and Causal Responsibility With Integer Linear Programming (ILP) and LP Relaxations’

    “What is a minimal set of tuples to delete from a database in order to eliminate all query answers? This problem is called ‘the resilience of a query’ and is one of the key algorithmic problems underlying various forms of reverse data management, such as view maintenance, deletion propagation and causal responsibility. A long-open question is determining the conjunctive queries (CQs) for which resilience can be solved in PTIME. We shed new light on this problem by proposing a unified Integer Linear Programming (ILP) formulation.” Find the paper and authors list in the ACM on Management of Data conference proceedings.

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  • ‘Zero-Shot Referring Expression Comprehension via Structural Similarity Between Images and Captions’

    “Zero-shot referring expression comprehension aims at localizing bounding boxes in an image corresponding to provided textual prompts, which requires: (i) a fine-grained disentanglement of complex visual scene and textual context, and (ii) a capacity to understand relationships among disentangled entities. Unfortunately, existing large vision-language alignment (VLA) models, e.g., CLIP, struggle with both aspects so cannot be directly used for this task. To mitigate this gap, we leverage large foundation models to disentangle both images and texts into triplets in the format of (subject, predicate, object).” Find the paper and full list of authors at ArXiv.

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  • When it comes to building more resilient structures, it takes ‘a whole profession,’ Northeastern professor says

    CDM Smith Professor and chair of civil and environmental engineering Jerome Hajjar received both the AISC Special Achievement Award and the SSRC Beedle Award at the recent AISC annual conference, delivering a keynote to several thousand attendees on sustainable and resilient structural systems.

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  • ‘Through the Looking Glass: The Role of Virtual Mirrors in Shaping Empathy in Virtual Reality Perspective Taking’

    “In this study, we explored the effect of seeing one’s avatar in a virtual mirror during a virtual reality (VR) perspective taking experience. Participants were divided into two groups, with one experiencing the VR environment with the presence of a mirror showcasing their avatar and the other without. … However, a notable difference emerged in terms of empathy; participants who viewed their avatars in the mirror exhibited reduced empathic responses. These findings illuminate the nuanced dynamics of self-representation in virtual environments.” Find the paper and list of authors in the proceedings of the 22nd International Conference on Mobile and Ubiquitous…

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  • ‘Point and Select: Effects of Multimodal Feedback on Text Entry Performance in Virtual Reality’

    “The current study examined the effects of visual, auditory, and haptic feedback on VR text entry performance and perceived mental workload across two experiments. In Experiment 1, the feedback was presented as users were pointing from one key to another, dubbed pointing feedback. … In Experiment 2, the feedback was provided when users selected the keys by pressing the trigger on the controller, dubbed selection feedback. … These results indicate that the usability of VR text entry tasks changes as a function of when and how feedback is provided.” Find the paper and authors list in the International Journal of…

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  • ‘Strata Fee Management in Condominiums via Smart Contracts’

    “Condominiums and similar properties use a stratum to manage daily operations, and owners fund it through strata fees. While existing strata fee management systems may be able to handle such funds, such systems could be more inherently transparent. It is possible to leverage the digital ledger from blockchain networks and smart contracts to build a fully transparent strata fee management system. This paper proposes designing a strata fee management system based on a smart contract in the Ethereum network.” Find the paper and full list of authors in the Journal of Theoretical and Applied Electronic Commerce Research.

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  • ‘Query Efficient Weighted Stochastic Matching’

    “In this paper, we study the weighted stochastic matching problem. Let G=(V,E) be a given edge-weighted graph and let its realization G be a random subgraph of G that includes each edge e∈E independently with a known probability pe. The goal in this problem is to pick a sparse subgraph Q of G without prior knowledge of G’s realization, such that the maximum weight matching among the realized edges of Q (i.e. the subgraph Q∩) in expectation approximates the maximum weight matching of the entire realization G.” Find the paper and full list of authors at ArXiv.

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  • ‘HypOp: Distributed Constrained Combinatorial Optimization Leveraging Hypergraph Neural Networks’

    “Scalable addressing of high dimensional constrained combinatorial optimization problems is a challenge that arises in several science and engineering disciplines. Recent work introduced novel application of graph neural networks for solving polynomial-cost unconstrained combinatorial optimization problems. This paper proposes a new framework, called HypOp, which greatly advances the state of the art for solving combinatorial optimization problems in several aspects.” Find the paper and full list of authors at ArXiv.

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  • Hip-hop may be a house ‘that young people built,’ but ‘Hip-Hop Archives’ are here for everyone

    Professor of communication studies Murray Forman has co-edited “Hip-Hop Archives: The Politics and Poetics of Knowledge Production,” which collects scholarship on modern archival practices in hip-hop culture, espousing multi-generational collaborations in archives that scale in size from government institutions to bedroom closets.

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  • Professor’s new book shines light on how architectural works are in constant conversation with the past

    With “The Architecture of Influence,” associate professor of architecture Amanda Lawrence explores how architectural copies, imitations, emulations and more interact to create an ongoing conversation between the present and the past.

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  • ‘Design Rules for Optimization of Photophysical and Kinetic Properties of Azoarene Photoswitches’

    “Azoarenes are an important class of molecular photoswitches that often undergo E → Z isomerization with ultraviolet light and have short Z-isomer lifetimes. Azobenzene has been a widely studied photoswitch for decades but can be poorly suited for photopharmacological applications due to its UV-light absorption and short-lived Z-isomer half-life (t1/2). … We calculated the E-isomer absorption (λmax) and Z-isomer t1/2 for a set of 26 hemi-azothiophenes. We compared their properties to thiophene-based photoswitches that have been studied previously.” Find the paper and full list of authors at Organic and Biomolecular Chemistry.

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  • ‘Reanalysis of mtDNA mutations of human primordial germ cells (PGCs) reveals NUMT contamination … selection in PGCs may be positive’

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    “The resilience of the mitochondrial genome (mtDNA) to a high mutational pressure depends, in part, on negative purifying selection in the germline. A paradigm in the field has been that such selection, at least in part, takes place in primordial germ cells (PGCs). Specifically, Floros et al. (Nature Cell Biology 20: 144-51) reported an increase in the synonymity of mtDNA mutations (a sign of purifying selection) between early-stage and late-stage PGCs. We re-analyzed Floros’ et al. data and determined that their mutational dataset was significantly contaminated with single nucleotide variants.” Find the paper and full list of authors in Mitochondrion.

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  • ‘Renova Toilet Paper: Avant-Garde Marketing in a Commoditized Category’

    “Renova, a Portuguese toilet paper manufacturer, is battling to survive in a stagnant, commoditised market dominated by international giants and private labels. To grow and remain independent, CEO Paulo Pereira da Silva is considering three options: 1) private label manufacturing, 2) new functional innovations and 3) launching a black toilet paper. What should he do? And how should the chosen strategy be implemented? In exploring the challenges facing small players in stagnant commodised categories, … this case provides detailed information on consumer behaviour, competition and the company.” Find the paper and full list of authors at Case Centre.

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  • ‘Allosteric Site Variants Affect GTP Hydrolysis on Ras’

    “RAS GTPases are proto‐oncoproteins that regulate cell growth, proliferation and differentiation in response to extracellular signals. The signaling functions of RAS, and other small GTPases, are dependent on their ability to cycle between GDP‐bound and GTP‐bound states. … GTP hydrolysis catalyzed by HRAS can be regulated by an allosteric site located between helices 3, 4 and loop 7. Here we explore the relationship between intrinsic GTP hydrolysis on HRAS and the position of helix 3 and loop 7 through manipulation of the allosteric site, showing that the two sites are functionally connected.” Find the paper and authors list at Protein…

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  • ‘Addressing Climate Change With Behavioral Science: A Global Intervention Tournament in 63 Countries’

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    “Effectively reducing climate change requires marked, global behavior change. However, it is unclear which strategies are most likely to motivate people to change their climate beliefs and behaviors. Here, we tested 11 expert-crowdsourced interventions on four climate mitigation outcomes: beliefs, policy support, information sharing intention, and an effortful tree-planting behavioral task. Across 59,440 participants from 63 countries, the interventions’ effectiveness was small, largely limited to nonclimate skeptics and differed across outcomes. … These findings suggest that the impact of behavioral climate interventions varies across audiences and target behaviors.” Find the paper and full list of authors at Science Advances.

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  • ‘Characterizing collective physical distancing in the U.S. during the first nine months of the COVID-19 pandemic’

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    “The COVID-19 pandemic offers an unprecedented natural experiment providing insights into the emergence of collective behavioral changes. … Here, we characterize collective physical distancing … in response to the COVID-19 pandemic in the pre-vaccine era by analyzing de-identified, privacy-preserving location data for a panel of over 5.5 million anonymized, opted-in U.S. devices. We define five indicators of users’ mobility and proximity to investigate how the emerging collective behavior deviates from typical pre-pandemic patterns during the first nine months of the COVID-19 pandemic.” Find the paper and full list of authors at PLOS Digital Health.

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  • ‘Neural Network Field Theories: Non-Gaussianity, Actions and Locality’

    “Both the path integral measure in field theory (FT) and ensembles of neural networks (NN) describe distributions over functions. When the central limit theorem can be applied in the infinite-width (infinite-N) limit, the ensemble of networks corresponds to a free FT. … Given the connected correlators of a FT, one can systematically reconstruct the action order-by-order in the expansion parameter, using a new Feynman diagram prescription whose vertices are the connected correlators.” Find the paper and full list of authors at Machine Learning: Science and Technology.

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  • ‘An Evolution of Hashtags: A Comparative Analysis of Hashtag Usage Following the Deaths of Michael Brown and George Floyd’

    “Recent instances of racial injustice and the growth of the Black Lives Matter movement have spurred conversations about police reform across the United States. Exposure to police aggression through the second-hand accounts of family members, friends, and the media is known to shape individuals’ perceptions of law enforcement. However, it remains unclear whether social media platforms can also facilitate vicarious exposure to racialized police violence. The current study addresses this gap by focusing on patterns of hashtag usage in a sample of over 350,000 tweets related to law enforcement.” Find the paper and list of authors at Race and Justice.

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  • ‘From Alert Child to Sleepy Adolescent: Age Trends in Chronotype, Social Jetlag and Sleep Problems in Youth With Autism’

    “Developmental changes in sleep in youth with autism spectrum disorder (ASD) are understudied. In non-ASD youth, adolescents exhibit a ‘night owl chronotype’ … and social jetlag (i.e., shifts in sleep timing across school nights and weekends), with corresponding sleep problems. The purpose of this study is to evaluate age trends in chronotype, social jetlag and sleep problems in high-risk youth with ASD. … Older age was associated with later chronotype, more social jetlag, fewer sleep anxiety/co-sleeping problems, fewer night waking and parasomnia problems and more daytime alertness problems.” Find the paper and authors list at the Journal of Autism and…

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  • Ocean Genome Legacy Center receives grant from Cell Signaling Technology

    Cell Signaling Technology, a biotechnology company located in Danvers, Mass, is providing a grant in support of Northeastern University’s Ocean Genome Legacy Center, bolstering their “long-running and highly successful Student Research in DNA Preservation Program, providing funds for experiments to improve the quality of DNA extracted from frozen biological materials.”

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  • Lili Su receives NSF CAREER Award for developing ‘resilient, scalable distributed algorithms’

    Assistant professor of electrical and computer engineering Lili Su has received an NSF CAREER Award for her work on federated learning, a “privacy-preserving and communication-efficient” methodology for large distributed systems.

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  • Introductory textbook on human services present ‘a complex and interwoven system’

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    Director of the human services program and senior research associate at the Dukakis Center for Urban and Regional Policy Lori Gardinier, working with teaching professors in human services Emily Mann, Matthew Lee and Simmons University associate professor Lydia Ogden, have published “Introduction to Human Services and Social Change: History, Practice, and Policy.” The publisher’s webpage describes the book as an “introductory text that provides a foundation for future human service professionals interested in the intersection of theory, research and practice.” The textbook places “human services professionals within a complex and interwoven system” for students and practitioners.

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  • Ghuman traces musical intermingling in ‘Resonances of the Raj’

    Professor of music Nalini Ghuman’s book “Resonances of the Raj: India in the English Musical Imagination, 1897-1947,” studies the overlooked transmission of musical influences between English and Indian culture “during the last fifty years of the Indo-British encounter,” according to the book’s companion website. “Ghuman reintegrates music into the cultural history of the British Raj, revealing unexpected minglings of peoples, musics and ideas that raise questions about ‘Englishness,’ about the nature of Empire and about the fixedness of identity.”

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  • Interdisciplinary team of Northeastern researchers propose ‘Reengineering the Sharing Economy’

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    Professors Yakov Bart, Rashmi Dyal-Chand, Ozlem Ergun and Babak Heydari have edited and contributed to — along with numerous Northeastern-affiliated faculty and students — “Reengineering the Sharing Economy: Design, Policy and Regulation.” The volume arises from questions like, “Will there be any workers in the sharing economy? Can we know enough about these technologies to regulate them? Is there any way to avoid the monopolization of assets?” A radically interdisciplinary collection of articles exploring the modern sharing economy, “this volume examines the challenge of reengineering a sharing economy that is more equitable, democratic, sustainable and just,” according to the publisher’s…

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  • ‘Evaluating Protein Cross-Linking as a Therapeutic Strategy to Stabilize SOD1 Variants in a Mouse Model of Familial ALS’

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    “Mutations in the gene encoding Cu-Zn superoxide dismutase 1 (SOD1) cause a subset of familial amyotrophic lateral sclerosis (fALS) cases. A shared effect of these mutations is that SOD1, which is normally a stable dimer, dissociates into toxic monomers that seed toxic aggregates. Considerable research effort has been devoted to developing compounds that stabilize the dimer of fALS SOD1 variants, but unfortunately, this has not yet resulted in a treatment. We hypothesized that cyclic thiosulfinate cross-linkers, which selectively target a rare, 2 cysteine-containing motif, can stabilize fALS-causing SOD1 variants in vivo.” Find the paper and list of authors at PLOS Biology.

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  • ‘Exploring the Indian Political YouTube Landscape: A Multimodal Multi-Task Approach’

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    “Social media profoundly influences all facets of our lives, including politics. Political parties, politicians, and media outlets have strategically cultivated their social media presence to engage with the public. However, with the advent of freely available Internet services in India, there has been a rising proliferation in the community of independent content creators on YouTube, with many getting millions of views per video. In this study, we present a novel multimodal dataset of videos, taken from 20 independent and influential content creators. … By introducing this novel dataset, we aim to stimulate further investigation within the domains of opinion dissemination…

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  • ‘Deploying and Evaluating LLMs to Program Service Mobile Robots’

    “Recent advancements in large language models (LLMs) have spurred interest in using them for generating robot programs from natural language, with promising initial results. We investigate the use of LLMs to generate programs for service mobile robots leveraging mobility, perception, and human interaction skills, and where accurate sequencing and ordering of actions is crucial for success. We contribute CodeBotler, an open-source robot-agnostic tool to program service mobile robots from natural language, and RoboEval, a benchmark for evaluating LLMs’ capabilities of generating programs to complete service robot tasks.” Find the paper and full list of authors at ArXiv.

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  • Ferrins receives NIH AViDD Center Development Grant

    “There are two goals in this project, firstly, to continue to develop our advanced hit compound … to identify a lead suitable for in vivo proof of concept studies. Secondly, to develop novel methods to study the structural dynamics of both covalent inhibitors and PLpro active site structures enabling the development of more potent covalent inhibitors.”

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  • ‘Adaptive thresholding increases sensitivity to detect … rate of skin conductance responses to psychologically arousing stimuli’

    “Psychophysiologists recording electrodermal activity (EDA) often derive measures of slow, tonic activity—skin conductance level (SCL)—and faster, more punctate changes—skin conductance responses (SCRs). … We developed a fixed plus adaptive (FA) thresholding method that adjusts identification of SCRs based on an individual’s SC at the onset of the SCR to increase statistical power and include data from more participants. We assess the utility of applying FA thresholding across two independent samples and explore age and race-related associations with EDA outcomes.” Find the paper and full list of authors at the International Journal of Psychophysiology.

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  • ‘Fossil Fuel Interests in Puerto Rico: Perceptions of Incumbent Power and Discourses of Delay’

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    “This study explores perceptions of fossil fuel interests and the role narratives of fossil fuel obstruction play in slowing down the renewable energy transition in Puerto Rico. We analyzed interviews conducted with 56 ‘energy actors’ engaged in Puerto Rico’s energy system. … Our interviews revealed that a wide range of energy actors perceived obstruction by fossil fuel interests as shaping Puerto Rico’s energy transition and used discourses of delay to describe Puerto Rico’s energy transition, but also employed narratives that countered this obstruction and resisted fossil fuel interests.” Find the paper and list of authors in Energy Research and Social…

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