28 research outputs found
Polarity-Reversing Type Photonic Receiving Scheme for Optical CDMA Signal in Radio Highway
Proposal of Direct Optical Switching CDMA for Cable-To-The-Air System and Its Performance Analysis
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Association between district-level perceived safety and self-rated health: A multilevel study in Seoul, South Korea
Objectives Several studies have reported the relationship between residents’ perceived neighbourhood safety and their health outcomes. However, those studies suffered from unreliability of neighbourhood safety measure and potential residual confounding related to crime rates. In this study, using multilevel analysis to account for the hierarchical structure of the data, we examined associations between district-level perceived safety and self-rated health after adjusting for potential confounders including the district-level crime rate. Design Cross-sectional study. Setting We used the first wave of Seoul Welfare Panel Study, which has 7761 individuals from 3665 households in 25 administrative districts in Seoul, South Korea. District-level perceived safety was obtained by aggregating responses from the residents that are representative samples for each administrative district in Seoul. To examine an association between district-level safety and residents’ self-rated health, we used mixed effect logistic regression. Results Our results showed that higher district-level perceived safety, an aggregated measure of district residents’ responses towards neighbourhood safety, was significantly associated with poor self-rated health after controlling for sex, age, education level, job status, marital status and household income (OR=0.87, 95% CI 0.78 to 0.97). Furthermore, this association was still robust when we additionally adjusted for the district-level crime rate (OR=0.86, 95% CI 0.77 to 0.95). Conclusions Our study highlights the importance of improving neighbourhood perceived safety to enhance residents’ health
Identifying molecular subtypes related to clinicopathologic factors in pancreatic cancer
Erratum to: Integrative analysis of multi-omics data for identifying multi-markers for diagnosing pancreatic cancer
Integrative analysis of multi-omics data for identifying multi-markers for diagnosing pancreatic cancer
Erratum to: Integrative analysis of multi-omics data for identifying multi-markers for diagnosing pancreatic cancer
Proposal of Direct Optical Switching CDMA for Cable-To-The-Air System and Its Performance Analysis
Polarity-Reversing Type Photonic Receiving Scheme for Optical CDMA Signal in Radio Highway
Oak Tree Canker Disease Supports Arthropod Diversity in a Natural Ecosystem
Microorganisms have many roles in nature. They may act as decomposers that obtain nutrients from dead materials, while some are pathogens that cause diseases in animals, insects, and plants. Some are symbionts that enhance plant growth, such as arbuscular mycorrhizae and nitrogen fixation bacteria. However, roles of plant pathogens and diseases in natural ecosystems are still poorly understood. Thus, the current study addressed this deficiency by investigating possible roles of plant diseases in natural ecosystems, particularly, their positive effects on arthropod diversity. In this study, the model system was the oak tree (Quercus spp.) and the canker disease caused by Annulohypoxylon truncatum, and its effects on arthropod diversity. The oak tree site contained 44 oak trees; 31 had canker disease symptoms while 13 were disease-free. A total of 370 individual arthropods were detected at the site during the survey period. The arthropods belonged to 25 species, 17 families, and seven orders. Interestingly, the cankered trees had significantly higher biodiversity and richness compared with the canker-free trees. This study clearly demonstrated that arthropod diversity was supported by the oak tree canker disease