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  1. Article ; Online: South Korea’s Responses regarding Mitigating the COVID-19 Crisis behind Bars

    Lee, Claire Seungeun

    Victims & Offenders

    2020  , Page(s) 1–13

    Keywords Applied Psychology ; Pathology and Forensic Medicine ; Law ; Health(social science) ; covid19
    Language English
    Publisher Informa UK Limited
    Publishing country uk
    Document type Article ; Online
    ISSN 1556-4886
    DOI 10.1080/15564886.2020.1819495
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Storm the Capitol: Linking Offline Political Speech and Online Twitter Extra-Representational Participation on QAnon and the January 6 Insurrection.

    Lee, Claire Seungeun / Merizalde, Juan / Colautti, John D / An, Jisun / Kwak, Haewoon

    Frontiers in sociology

    2022  Volume 7, Page(s) 876070

    Abstract: The transfer of power stemming from the 2020 presidential election occurred during an unprecedented period in United States history. Uncertainty from the COVID-19 pandemic, ongoing societal tensions, and a fragile economy increased societal polarization, ...

    Abstract The transfer of power stemming from the 2020 presidential election occurred during an unprecedented period in United States history. Uncertainty from the COVID-19 pandemic, ongoing societal tensions, and a fragile economy increased societal polarization, exacerbated by the outgoing president's offline rhetoric. As a result, online groups such as QAnon engaged in extra political participation beyond the traditional platforms. This research explores the link between offline political speech and online extra-representational participation by examining Twitter within the context of the January 6 insurrection. Using a mixed-methods approach of quantitative and qualitative thematic analyses, the study combines offline speech information with Twitter data during key speech addresses leading up to the date of the insurrection; exploring the link between Trump's offline speeches and QAnon's hashtags across a 3-day timeframe. We find that links between online extra-representational participation and offline political speech exist. This research illuminates this phenomenon and offers policy implications for the role of online messaging as a tool of political mobilization.
    Language English
    Publishing date 2022-05-19
    Publishing country Switzerland
    Document type Journal Article
    ISSN 2297-7775
    ISSN (online) 2297-7775
    DOI 10.3389/fsoc.2022.876070
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Order via subito

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    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  3. Book ; Online: CryptoScratch

    Percival, Nathan / Rayavaram, Pranathi / Narain, Sashank / Lee, Claire Seungeun

    Developing and evaluating a block-based programming tool for teaching K-12 cryptography education using Scratch

    2023  

    Abstract: This paper presents the design, implementation, and evaluation of a new framework called CryptoScratch, which extends the Scratch programming environment with modern cryptographic algorithms (e.g., AES, RSA, SHA-256) implemented as visual blocks. Using ... ...

    Abstract This paper presents the design, implementation, and evaluation of a new framework called CryptoScratch, which extends the Scratch programming environment with modern cryptographic algorithms (e.g., AES, RSA, SHA-256) implemented as visual blocks. Using the simple interface of CryptoScratch, K-12 students can study how to use cryptographic algorithms for services like confidentiality, authentication, and integrity protection; and then use these blocks to build complex modern cryptographic schemes (e.g., Pretty Good Privacy, Digital Signatures). In addition, we present the design and implementation of a Task Block that provides students instruction on various cryptography problems and verifies that they have successfully completed the problem. The task block also generates feedback, nudging learners to implement more secure solutions for cryptographic problems. An initial usability study was performed with 16 middle-school students where students were taught basic cryptographic concepts and then asked to complete tasks using those concepts. Once students had knowledge of a variety of basic cryptographic algorithms, they were asked to use those algorithms to implement complex cryptographic schemes such as Pretty Good Privacy and Digital Signatures. Using the successful implementation of the cryptographic and task blocks in Scratch, the initial testing indicated that $\approx 60\%$ of the students could quickly grasp and implement complex cryptography concepts using CryptoScratch, while $\approx 90\%$ showed comfort with cryptography concepts and use-cases. Based on the positive results from the initial testing, a larger study of students is being developed to investigate the effectiveness across the socioeconomic spectrum.
    Keywords Computer Science - Cryptography and Security
    Subject code 005
    Publishing date 2023-02-22
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Book ; Online: Integrating Data Structures and Algorithms in K-12 Education using Block-based Programming

    Jagadeesha, Ashwin / Rayavaram, Pranathi / Marward, Justin / Narain, Sashank / Lee, Claire Seungeun

    2023  

    Abstract: This paper describes the design and evaluation of DSAScratch, an extension to Scratch, a widely used block-based programming language. The DSAScratch framework implements advanced data structures such as arrays, sets, dictionaries, and searching and ... ...

    Abstract This paper describes the design and evaluation of DSAScratch, an extension to Scratch, a widely used block-based programming language. The DSAScratch framework implements advanced data structures such as arrays, sets, dictionaries, and searching and sorting algorithms. By presenting these concepts in an intuitive block-based interface, these blocks abstract away technical details and simplify data structures and algorithms concepts for K-12 students to grasp and apply to programming problems more readily. A preliminary evaluation of the tool's usability and learning outcomes is presented in this paper. Given the information we have gathered about DSAScratch, we show that the extension is beneficial for students to develop a deeper understanding of programming and an intuitive understanding of these concepts in high school. We present the methodology and preliminary results of a user study conducted with ten high school students. During the user study, 70% of the participants understood the key ideas behind DSAScratch implemented data structures and algorithms through a mixture of lectures and hands-on activities. We show that DSAScratch was also an important part of the workshop for 90% of the students who participated, as it enhanced their understanding of algorithms and data structures. Furthermore, they indicated that they would recommend DSAScratch to their peers.
    Keywords Computer Science - Human-Computer Interaction
    Publishing date 2023-02-22
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Book ; Online: Designing a Visual Cryptography Curriculum for K-12 Education

    Rayavaram, Pranathi / Sista, Sreekriti / Jagadeesha, Ashwin / Marwad, Justin / Percival, Nathan / Narain, Sashank / Lee, Claire Seungeun

    2023  

    Abstract: We have designed and developed a simple, visual, and narrative K-12 cybersecurity curriculum leveraging the Scratch programming platform to demonstrate and teach fundamental cybersecurity concepts such as confidentiality, integrity protection, and ... ...

    Abstract We have designed and developed a simple, visual, and narrative K-12 cybersecurity curriculum leveraging the Scratch programming platform to demonstrate and teach fundamental cybersecurity concepts such as confidentiality, integrity protection, and authentication. The visual curriculum simulates a real-world scenario of a user and a bank performing a bank transaction and an adversary attempting to attack the transaction.We have designed six visual scenarios, the curriculum first introduces students to three visual scenarios demonstrating attacks that exist when systems do not integrate concepts such as confidentiality, integrity protection, and authentication. Then, it introduces them to three visual scenarios that build on the attacks to demonstrate and teach how these fundamental concepts can be used to defend against them. We conducted an evaluation of our curriculum through a study with 18 middle and high school students. To evaluate the student's comprehension of these concepts we distributed a technical survey, where overall average of students answering these questions related to the demonstrated concepts is 9.28 out of 10. Furthermore, the survey results revealed that 66.7% found the system extremely easy and the remaining 27.8% found it easy to use and understand.
    Keywords Computer Science - Cryptography and Security
    Publishing date 2023-02-22
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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    Inter-library loan at ZB MED

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  6. Book ; Online: Predicting Anti-Asian Hateful Users on Twitter during COVID-19

    An, Jisun / Kwak, Haewoon / Lee, Claire Seungeun / Jun, Bogang / Ahn, Yong-Yeol

    2021  

    Abstract: We investigate predictors of anti-Asian hate among Twitter users throughout COVID-19. With the rise of xenophobia and polarization that has accompanied widespread social media usage in many nations, online hate has become a major social issue, attracting ...

    Abstract We investigate predictors of anti-Asian hate among Twitter users throughout COVID-19. With the rise of xenophobia and polarization that has accompanied widespread social media usage in many nations, online hate has become a major social issue, attracting many researchers. Here, we apply natural language processing techniques to characterize social media users who began to post anti-Asian hate messages during COVID-19. We compare two user groups -- those who posted anti-Asian slurs and those who did not -- with respect to a rich set of features measured with data prior to COVID-19 and show that it is possible to predict who later publicly posted anti-Asian slurs. Our analysis of predictive features underlines the potential impact of news media and information sources that report on online hate and calls for further investigation into the role of polarized communication networks and news media.

    Comment: Accepted at Findings of EMNLP 2021. Please cite our EMNLP Findings 2021 paper!
    Keywords Computer Science - Computers and Society ; Computer Science - Social and Information Networks
    Subject code 306
    Publishing date 2021-09-15
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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