focalinterest.net

Author: editor@focalinterest.com

  • Tenure raises wages mainly after long employment in South Korea

    What the study found

    The study found that in South Korea, 10 years of tenure has no significant effect on log wages, but 20 years of tenure is associated with wage increases of 11% to 30%. It also found that sector-specific skills matter more for wage growth than occupation-specific skills.

    Why the authors say this matters

    The findings indicate that seniority and experience do not affect wages in the same way, and the authors suggest that sector-specific skills are an important part of wage growth in South Korea. The study suggests this is relevant for understanding how wages change over time in the labor market.

    What the researchers tested

    The researcher used 20 years of data from the Korean Labor and Income Panel Study (KLIPS), a long-running survey of workers' earnings and jobs. The study examined wage returns to general experience, firm tenure, and industry- and occupation-specific tenure using the Altonji and Shakotko instrumental variable approach and the Topel two-step estimation method to address bias from unobserved heterogeneity.

    What worked and what didn't

    Longer tenure showed a positive association with wages only at the 20-year level, where wages rose by 11%–30%. By contrast, 10 years of tenure was not significantly related to log wages, and occupation-specific returns were minimal. Sector-specific skills showed a critical role in wage growth.

    What to keep in mind

    The abstract does not describe detailed limitations beyond the use of the available data and methods. The findings are based on South Korea and on the measures used for experience and tenure in this study.

    • Using 20 years of KLIPS data, the study examined wage returns to experience and different kinds of tenure in South Korea.
    • Ten years of tenure had no significant effect on log wages.
    • Twenty years of tenure was associated with wage increases of 11% to 30%.
    • Sector-specific skills played a critical role in wage growth.
    • Occupation-specific wage returns were minimal.

  • Classroom SEL course improved social skills in young children

    What the study found

    The study found that a classroom-based Social-Emotional Learning (SEL) Basic Course was associated with better social-emotional outcomes in kindergarten children. Children in the intervention group had higher assertiveness, self-control, and cooperation scores, and fewer behavioral problems, than the comparison group.

    Why the authors say this matters

    The authors conclude that classroom-based SEL may be effective in early childhood. They also suggest the findings highlight the effectiveness and importance of a universal classroom-based program that promotes social-emotional skills among all children, regardless of individual risk.

    What the researchers tested

    The researchers studied 200 children in the middle class of a Japanese kindergarten, with 129 in the intervention group and 71 in the control group. In 2023, the SEL Basic Course was delivered class by class in 15 weekly one-hour lessons, and teachers and parents rated children's social skills and behaviors using the Social Skills Scale and the Strengths and Difficulties Questionnaire.

    What worked and what didn't

    After the program, the intervention group showed significantly higher assertiveness, self-control, and cooperation than the control group. They also had significantly lower behavioral problem scores after the program than before it and than the control group.

    What to keep in mind

    The abstract does not describe detailed limitations beyond noting that preventive interventions for school maladjustment in young children are scarce and inadequately validated in Japan. The summary also does not provide information about long-term follow-up or outcomes beyond the kindergarten setting.

    • The SEL Basic Course was delivered in kindergarten classes over 15 weekly one-hour lessons.
    • Children in the intervention group scored higher in assertiveness, self-control, and cooperation after the program.
    • Behavioral problem scores were lower after the program in the intervention group and lower than in the control group.
    • Teachers and parents both contributed ratings of children's skills and behaviors.
    • The authors describe classroom-based SEL as potentially effective in early childhood.

  • Political donations are linked to lower cash holdings and investment efficiency

    What the study found

    The study found that political donations were negatively associated with cash holdings and investment efficiency, and positively associated with leverage. The authors report these patterns as evidence of agency concerns regarding political donations in Australia.

    Why the authors say this matters

    The authors conclude that the findings add to understanding of how political donations relate to corporate financial decision-making. They suggest the results matter because they show links between donations and outcomes such as cash holdings, leverage, and investment efficiency.

    What the researchers tested

    The researchers analyzed publicly available political donation data from the Australian Electoral Commission. Their sample included the top 300 firms listed on the Australian Stock Exchange from 2006 to 2022, giving 3,404 firm-year observations, and they used multivariate ordinary least squares regression along with Heckman selection, entropy balancing, and two-stage least squares tests.

    What worked and what didn't

    The results showed a negative correlation between political donations and cash holdings. They also showed a positive correlation with leverage and a negative relationship with investment efficiency. The authors report that these results remained robust after additional tests and correction for endogeneity issues.

    What to keep in mind

    The abstract does not describe limitations in detail. The study is limited to large Australian listed firms and uses observational data, so the reported relationships are associations rather than direct causal claims.

    • Political donations were negatively associated with cash holdings.
    • Political donations were positively associated with leverage.
    • Political donations were negatively associated with investment efficiency.
    • The study used 3,404 firm-year observations from the top 300 Australian Stock Exchange firms.
    • The authors say the results support concerns about agency costs.

  • Beaver coexistence messaging aligned with landowner behavior factors

    What the study found

    Practitioners used multiple communication channels to listen for and respond to landowners' capability, opportunity, and motivation. They tailored messages to improve knowledge and skills, address site-specific and social context, and align beaver impacts with landowner goals.

    Why the authors say this matters

    The authors conclude that the COM-B model, which stands for capability, opportunity, and motivation, can do more than guide audience analysis and intervention design. They suggest it can also help practitioners make sense of existing communication efforts, find gaps, and adjust communication in real time.

    What the researchers tested

    The researchers conducted 23 semistructured interviews with practitioners in Oregon, USA, about communication with private landowners on beaver coexistence. They used the COM-B model to synthesize the main dimensions of those communication approaches.

    What worked and what didn't

    The interviews showed that practitioners were already using communication strategies that mapped onto capability, opportunity, and motivation. The abstract does not describe any specific approach that failed, beyond noting that conservation messaging seldom links to behavior change theories.

    What to keep in mind

    The study is based on interviews with practitioners in one U.S. state, so the scope is limited to that context. The abstract does not describe additional limitations.

    • 23 semistructured interviews were conducted with practitioners in Oregon, USA.
    • The study used the COM-B model to analyze communication about beaver coexistence.
    • Practitioners used multiple channels to respond to landowners' capability, opportunity, and motivation.
    • Messages were tailored to knowledge, skills, site-specific context, social context, and landowner goals.
    • The authors suggest COM-B may help practitioners identify gaps and adapt communication in real time.

  • Review links misinformation to polarization and distrust

    What the study found

    The review found that online misinformation appears to be connected with ideological polarisation and institutional distrust. The authors also report a proposed tri-directional relationship among online mis-dis-information, ideological polarisation, and institutional distrust.

    Why the authors say this matters

    The study suggests these issues matter because online misinformation is described as a risk to democratic integrity, quality journalism, and an informed public, especially during crises. The authors conclude that understanding these links is important for counteracting misinformation and its consequences.

    What the researchers tested

    The researchers carried out an integrative review of current literature. They critically analysed and synthesised findings from 157 publications and used thematic analysis to identify patterns across four themes: ideological polarisation, institutional distrust, disinformation typology and relevance, and strategic counteraction.

    What worked and what didn't

    The review generated themes suggesting a tri-directional relationship between online misinformation, ideological polarisation, and institutional distrust. It also presents a conceptual pathway and a strategic framework for counteraction, but the abstract does not report experimental tests or comparative performance of specific interventions.

    What to keep in mind

    This is a review, so the findings depend on the literature the authors selected and analysed. The abstract does not describe limitations in detail, and it does not provide evidence from a single original experiment.

    • The review focuses on online misinformation, ideological polarisation, and institutional distrust.
    • The authors analysed and synthesised 157 publications.
    • Thematic analysis suggested a tri-directional relationship among misinformation, polarisation, and distrust.
    • The paper presents a conceptual pathway and a strategic framework for counteraction.
    • The abstract does not describe experimental testing of interventions.

  • Olive wastewater phenolics changed some pork meat traits

    What the study found

    The study found that adding an olive mill wastewater polyphenol extract to finishing pig diets did not change growth performance, backfat thickness, or the histopathological and morphometric findings measured. It did, however, affect some antioxidant measures and some meat quality traits.

    Why the authors say this matters

    The authors suggest that olive mill wastewater polyphenols may influence the technological quality and antioxidant state of pork meat. They also conclude that more research is needed to better understand this role.

    What the researchers tested

    The researchers tested a polyphenol extract from olive mill wastewater in female Landrace × Duroc heavy finishing pigs. They compared a control diet with diets containing 74 ppm or 225 ppm of the olive mill wastewater polyphenols in 135 pigs total, and measured growth performance in vivo and several postmortem outcomes including backfat thickness, pubertal status, tissue histology, morphometry, antioxidant status, and raw meat quality traits.

    What worked and what didn't

    There were no significant differences between groups in growth performance traits, histopathological findings, morphometric findings, or backfat thickness. In contrast, the P-HIGH group showed increased liver DPPH radical scavenging activity, and both supplemented groups had higher serum paraoxonase activity and ferric reducing antioxidant power; cooking loss and redness decreased, while yellowness increased in both supplemented groups.

    What to keep in mind

    The abstract does not describe limitations beyond stating that additional research is required. The findings are limited to the specific pig population, doses, and outcomes studied here.

    • Two doses of olive mill wastewater polyphenols were tested in female finishing pigs: 74 ppm and 225 ppm.
    • Growth performance, backfat thickness, and measured tissue histology and morphometry did not differ significantly among groups.
    • The higher-dose group showed increased liver DPPH radical scavenging activity.
    • Both supplemented groups had higher serum paraoxonase activity and ferric reducing antioxidant power.
    • Cooking loss and meat redness decreased, while yellowness increased in the supplemented groups.

  • Dissertation metadiscourse differed by discipline in some features

    What the study found

    The study found that dissertation writers in applied linguistics and sociology used most metadiscourse items in similar ways, but they differed significantly in their use of evidentials, code glosses, and self-mentions. Metadiscourse refers to language that helps organize text and show the writer’s stance toward the research and reader.

    Why the authors say this matters

    The authors conclude that the findings highlight the situated nature of metadiscourse and show preferred patterns of metadiscoursal use in applied linguistics and sociology dissertation discussion chapters. In other words, the study suggests that these rhetorical choices are shaped by discipline.

    What the researchers tested

    The researchers used Hyland’s 2019 metadiscourse model to analyze a corpus of 20 dissertation discussion chapters from two social science disciplines: applied linguistics and sociology. They compared how writers in the two groups used metadiscourse in these chapters.

    What worked and what didn't

    Most metadiscoursal items were appropriated similarly by the two groups. However, significant differences appeared in evidentials, code glosses, and self-mentions, with p < .05.

    What to keep in mind

    The available summary does not describe limitations in detail. The findings are based on a small corpus of 20 dissertation discussion chapters from only two disciplines, so the study’s scope is limited to that sample.

    • The study compared metadiscourse use in dissertation discussion chapters from applied linguistics and sociology.
    • Most metadiscourse items were used similarly across the two disciplines.
    • Significant differences were found in evidentials, code glosses, and self-mentions.
    • The analysis used Hyland’s 2019 metadiscourse model.
    • The authors say the findings highlight the situated nature of metadiscourse.

  • Mechanical models for thermoplastic elastomer belt welding were refined

    What the study found

    The study found that several hyperelastic models could be used to represent the mechanical behavior of a polyurethane-based thermoplastic elastomer used in belts. It also found that deformation speed, or strain rate, may need to be included in the material model because the stress-strain response changed with strain rate.

    Why the authors say this matters

    The authors say this matters because the results will be used to further refine a numerical model for optimizing the belt plasticising operation during hot plate welding. They also note that better optimization may improve energy efficiency in belt welding and, more broadly, the belt manufacturing process.

    What the researchers tested

    The researchers combined static tensile testing with numerical simulation using the finite element method. They first measured the material's stress response to displacement, then used the resulting stress-strain data to test several hyperelastic models, including Mooney-Rivlin, Ogden, Neo-Hooke, Yeoh, Arruda-Boyce, and Marlow.

    What worked and what didn't

    Based on agreement between numerical and experimental results, the second-order polynomial, third-order Ogden, and fourth-order Ogden models were selected as suitable for this material. The first stage of testing also suggested that a model accounting for deformation speed may be needed, and the second stage showed that strain rate affected the stress-strain characteristics.

    What to keep in mind

    The abstract does not describe detailed limitations beyond indicating that the model still needs refinement. The findings are specific to the polyurethane-based thermoplastic elastomer studied and to the belt welding context described in the paper.

    • The study examined a polyurethane-based thermoplastic elastomer used in belts.
    • Static tensile tests were used to measure stress-strain behavior.
    • Several hyperelastic models were compared in finite element simulations.
    • The second-order polynomial, third-order Ogden, and fourth-order Ogden models were selected as suitable.
    • Strain rate affected the stress-strain characteristics, suggesting a need for viscoelasticity.

  • Android app matched manual facial index measurements

    What the study found

    The study found no significant difference between facial index measurements from the Android app and those taken manually. The authors also report very high agreement between examiners using the measurement method.

    Why the authors say this matters

    The authors conclude that the app could make facial index measurement easier by allowing quick and reliable use of a smartphone without equipment like calipers or manual calculations. They note that facial index measurement is used in orthodontic diagnosis and can also be relevant in anthropology and forensic medicine.

    What the researchers tested

    The researchers developed a photographic app for Android operating systems to classify faces into Banister facial types. They compared facial index measurements from the app with manual measurements in a sample of randomly selected Indian subjects, used an independent t-test for the comparison, assessed inter-examiner reliability with three investigators using Cronbach’s alpha, and used a chi-square test to compare Prosopic index classifications by method.

    What worked and what didn't

    The app-based and manual facial index values did not differ significantly. Cronbach’s alpha was 0.998, which the authors describe as the best agreement between examiners. The largest share of subjects was classified as having a hyperleptoprosopic facial phenotype in both methods.

    What to keep in mind

    The abstract does not describe detailed limitations. The summary also does not provide the sample size, the app’s measurement steps, or whether the findings apply beyond the studied Indian sample.

    • The Android app and manual facial index measurements showed no significant difference.
    • Inter-examiner reliability was very high, with Cronbach’s alpha reported as 0.998.
    • The most common facial phenotype in both methods was hyperleptoprosopic.
    • The authors say the app can measure facial index quickly on a smartphone without calipers or calculations.
    • The study compared app-based and manual measurements in randomly selected Indian subjects.

  • SFPQ helps prevent repeat-element genome instability

    What the study found

    The study found that SFPQ, an RNA-binding protein, helps suppress genome instability linked to R-loops, which are three-stranded nucleic acid structures made of an RNA:DNA hybrid and displaced single-stranded DNA. The effect was reported at repetitive DNA regions such as telomeres, pericentromeres, LINE-1, and SINE elements.

    Why the authors say this matters

    The authors say this matters because persistent R-loops can drive conflicts with transcription and replication, and repeat-rich parts of the human genome are prone to R-loop formation. The findings indicate that SFPQ helps maintain genome stability in these regions and are reported to correlate with improved survival of sarcoma patients.

    What the researchers tested

    The researchers examined whether SFPQ binds R-loops, associates with chromatin containing R-loops, and recruits the histone H3.3-specific chaperone DAXX. They also tested what happens when SFPQ is lost, including effects on histone H3.3 incorporation, replication stress, DNA damage, cytoplasmic DNA, and cGAS/STING innate immune signaling.

    What worked and what didn't

    SFPQ showed in-vitro R-loop binding activity and was associated with chromatin containing R-loops. The study reports that SFPQ recruits DAXX to repeat elements to preserve a correct nucleosome template, which counteracts R-loop accumulation; when SFPQ was lost, DAXX was displaced, histone H3.3 incorporation was reduced, and replication stress-mediated genome instability increased. Loss of SFPQ also led to cytoplasmic DNA and activation of cGAS/STING signaling.

    What to keep in mind

    The abstract does not describe detailed experimental design, sample sizes, or study limitations. The survival finding is stated as a correlation in sarcoma patients, so the abstract does not show that SFPQ caused the survival difference.

    • SFPQ suppresses R-loop–mediated replication stress and DNA damage at repeat DNA elements.
    • SFPQ binds R-loops in vitro and associates with chromatin containing R-loops.
    • SFPQ recruits DAXX, the histone H3.3-specific chaperone, to help maintain nucleosome structure.
    • Loss of SFPQ reduces histone H3.3 incorporation and increases genome instability.
    • Loss of SFPQ also activates cGAS/STING innate immune signaling and is reported to correlate with improved sarcoma survival.