Leading from equity: Changing and organizing for deeper learning

Purpose – This study aims to explore how educational leaders in South Korea adopted equity mindsets and how they organized changes to support students’ deeper learning during COVID-19. Design/methodology/approach – The developed a comprehensive framework of Equity Leadership for Deeper Learning, by revising the existing model of Darling-Hammond and Darling-Hammond (2022) and synthesizing equity leadership literature. Drawing upon this framework, this study analyzed data collected from individual interviews and a focus group with school and district administrators in the K-12 Korean education system. Findings – The participants prioritized an equity stance of their leadership by critically understanding sociopolitical conditions, challenging unjust policies, and envisioning the big picture of equity-centered education. This led them to operationalize equity leadership in practice and create a more inclusive and supportive environment for student-centered deeper learning. District leaders established well-resourced systems by creating/developing instructional resources and making policies more useful. School leaders promoted quality teaching by strengthening access, developing student-centered curricula, and establishing individualized programs for more equitable deeper learning. Research limitations/implications – This study builds on scholarship of deeper learning and equity leadership by adding evidence from Korean educational leaders during COVID-19. First, the findings highlight the significance of leaders’ equity mindsets in creating a safe and inclusive environment for deeper learning. This study further suggests that sharing an equity stance as a collective norm at the system level, spanning across districts and schools is important, which is instrumental to scale up innovation and reform initiatives. Second, this research also extends comparative, culturally informed perspectives to understand educational leadership. Most contemporary leadership theories originated from and are informed by Western and English-speaking contexts despite being widely applied to other contexts across the culture. This study’s analysis underscores the importance of contextualizing leadership practices within the socio-historical contexts that influence how education systems are established and operate. Practical implications – Leaders’ adopting equity mindsets, utilizing bureaucratic resources in creative ways and implementing a school-wide quality curriculum are crucial to supporting students’ deeper learning. District leaders can leverage existing vertical and horizontal networks to effectively communicate with teachers and local communities to establish well-resourced systems. As deeper learning is timeless and requires high levels of student engagement, school leaders’ efforts to establish school-wide curricula is critical to facilitate deeper learning for students. Originality/value – The study provides a nuanced understanding of how equity focused leaders responded to difficulties caused by the pandemic and strategized to support students’ deeper learning. Existing studies tend to prioritize teacher effects on student learning, positing leadership effects as secondary or indirect. Alternatively, the authors argue that, without leadership supporting an inclusive environment, resourceful systems and student-centered school culture, deeper learning cannot be fully achieved in equitable ways

HistRED: A Historical Document-Level Relation Extraction Dataset

Despite the extensive applications of relation extraction (RE) tasks in various domains, little has been explored in the historical context, which contains promising data across hundreds and thousands of years. To promote the historical RE research, we present HistRED constructed from Yeonhaengnok. Yeonhaengnok is a collection of records originally written in Hanja, the classical Chinese writing, which has later been translated into Korean. HistRED provides bilingual annotations such that RE can be performed on Korean and Hanja texts. In addition, HistRED supports various self-contained subtexts with different lengths, from a sentence level to a document level, supporting diverse context settings for researchers to evaluate the robustness of their RE models. To demonstrate the usefulness of our dataset, we propose a bilingual RE model that leverages both Korean and Hanja contexts to predict relations between entities. Our model outperforms monolingual baselines on HistRED, showing that employing multiple language contexts supplements the RE predictions. The dataset is publicly available at: https://huggingface.co/datasets/Soyoung/HistRED under CC BY-NC-ND 4.0 license

Teaching with resilience during the COVID-19 pandemic: Korean teachers and collective professionalism

This study applies system-focused resilience and collaborative professionalism to examine how teachers in Korea collectively developed resilience and transformed teaching during COVID-19. Using qualitative data from seven individual interviews and four focus groups, we found Korean teachers navigated complex challenges (rapidly changing policies, online teaching, exacerbated learning gaps, and excessive social pressure) and utilized contextual resources (collective autonomy and flexibility, solidity and solidarity, and collective responsibility) to develop strategies (collaborative inquiry, timely communication, and envisioning the future of schooling). The study extends teacher resilience toward more collective and communal, from the individual level, by linking resilience to collaborative systemic changes

Owning educational change in Korean schools: Three driving forces behind sustainable change (Excerpt)

“Can the innovative educational changes imposed by the pandemic be sus-tained for the long-term?” That’s the question that Taeyeon Kim, Minseok Yang, and Sunbin Lim ask in the third commentary in a series launched by Corrie Stone-Johnson and the Journal of Educational Change. This question builds on the first commentary in that series by Yong Zhao and Jim Watterston – “The changes we need post-Covid” and the sec-ond “What can change in schools after the pandemic?” by Thomas Hatch. This week’s post provides an excerpt from the third commentary, highlight-ing they key lessons and implications from the pandemic experiences of ed-ucators in the Korean context. The full commentary can be found in the November issue of the Journal of Educational Change

Melting Domain Size and Recrystallization Dynamics of Ice Revealed by Time-Resolved X-ray Scattering

The phase transition between water and ice is ubiquitous and one of the most important phenomena in nature. Here, we performed time-resolved x-ray scattering experiments capturing the melting and recrystallization dynamics of ice. The ultrafast heating of ice I is induced by an IR laser pulse and probed with an intense x-ray pulse, which provided us with direct structural information on different length scales. From the wide-angle x-ray scattering (WAXS) patterns, the molten fraction, as well as the corresponding temperature at each delay, were determined. The small-angle x-ray scattering (SAXS) patterns, together with the information extracted from the WAXS analysis, provided the time-dependent change of the size and the number of the liquid domains. The results show partial melting (~13 %) and superheating of ice occurring at around 20 ns. After 100 ns, the average size of the liquid domains grows from about 2.5 nm to 4.5 nm by the coalescence of approximately six adjacent domains. Subsequently, we capture the recrystallization of the liquid domains, which occurs on microsecond timescales due to the cooling by heat dissipation and results to a decrease of the average liquid domain size

X-ray Free Electron Laser Studies of Electron and Phonon Dynamics of Graphene Adsorbed on Copper

We report optical pumping and X-ray absorption spectroscopy experiments at the PAL free electron laser that directly probe the electron dynamics of a graphene monolayer adsorbed on copper in the femtosecond regime. By analyzing the results with ab-initio theory we infer that the excitation of graphene is dominated by indirect excitation from hot electron-hole pairs created in the copper by the optical laser pulse. However, once the excitation is created in graphene, its decay follows a similar path as in many previous studies of graphene adsorbed on semiconductors, i e. rapid excitation of SCOPS (Strongly Coupled Optical Phonons) and eventual thermalization. It is likely that the lifetime of the hot electron-hole pairs in copper governs the lifetime of the electronic excitation of the graphene.Comment: 22 pages, 8 Figures including Supplementary Materia

Cracking-assisted Fabrication of Nanoscale Patterns for Micro/Nanotechnological Applications

Cracks are frequently observed in daily life, but they are rarely welcome and are considered as a material failure mode. Interestingly, cracks cause critical problems in various micro/nanofabrication processes such as colloidal assembly, thin film deposition, and even standard photolithography because they are hard to avoid or control. However, increasing attention has been given recently to control and use cracks as a facile, low-cost strategy for producing highly ordered nanopatterns. Specifically, cracking is the breakage of molecular bonds and occurs simultaneously over a large area, enabling fabrication of nanoscale patterns at both high resolution and high throughput, which are difficult to obtain simultaneously using conventional nanofabrication techniques. In this review, we discuss various cracking-assisted nanofabrication techniques, referred to as crack lithography, and summarize the fabrication principles, procedures, and characteristics of the crack patterns such as their position, direction, and dimensions. First, we categorize crack lithography techniques into three technical development levels according to the directional freedom of the crack patterns: randomly oriented, unidirectional, or multidirectional. Then, we describe a wide range of novel practical devices fabricated by crack lithography, including bioassay platforms, nanofluidic devices, nanowire sensors, and even biomimetic mechanosensors.ope

The genome landscape of indigenous African cattle

Background: The history of African indigenous cattle and their adaptation to environmental and human selection pressure is at the root of their remarkable diversity. Characterization of this diversity is an essential step towards understanding the genomic basis of productivity and adaptation to survival under African farming systems. Results: We analyze patterns of African cattle genetic variation by sequencing 48 genomes from five indigenous populations and comparing them to the genomes of 53 commercial taurine breeds. We find the highest genetic diversity among African zebu and sanga cattle. Our search for genomic regions under selection reveals signatures of selection for environmental adaptive traits. In particular, we identify signatures of selection including genes and/ or pathways controlling anemia and feeding behavior in the trypanotolerant N’Dama, coat color and horn development in Ankole, and heat tolerance and tick resistance across African cattle especially in zebu breeds. Conclusions: Our findings unravel at the genome-wide level, the unique adaptive diversity of African cattle while emphasizing the opportunities for sustainable improvement of livestock productivity on the continent

Search for new particles in events with energetic jets and large missing transverse momentum in proton-proton collisions at root s=13 TeV

A search is presented for new particles produced at the LHC in proton-proton collisions at root s = 13 TeV, using events with energetic jets and large missing transverse momentum. The analysis is based on a data sample corresponding to an integrated luminosity of 101 fb(-1), collected in 2017-2018 with the CMS detector. Machine learning techniques are used to define separate categories for events with narrow jets from initial-state radiation and events with large-radius jets consistent with a hadronic decay of a W or Z boson. A statistical combination is made with an earlier search based on a data sample of 36 fb(-1), collected in 2016. No significant excess of events is observed with respect to the standard model background expectation determined from control samples in data. The results are interpreted in terms of limits on the branching fraction of an invisible decay of the Higgs boson, as well as constraints on simplified models of dark matter, on first-generation scalar leptoquarks decaying to quarks and neutrinos, and on models with large extra dimensions. Several of the new limits, specifically for spin-1 dark matter mediators, pseudoscalar mediators, colored mediators, and leptoquarks, are the most restrictive to date.Peer reviewe