Nagasaki University's Academic Output SITE: NAOSITE
Not a member yet
31576 research outputs found
Sort by
長崎県の中古住宅市場における宅建業者の採算性判断と取扱基準に関する研究
This study examines the conditions and profitability criteria under which real estate agents in Nagasaki Prefecture handle and repurpose existing detached houses, in a region where vacant housing is increasing under severe geographical constraints such as steep slopes, poor road access, and strict rebuildability regulations. Using data from a questionnaire survey and preliminary interviews with member firms of the Nagasaki Real Estate Transaction Association (23 valid responses), the analysis finds that decisions regarding brokerage and in-house reuse are shaped primarily by physical and locational factors rather than building age. Profitability is evaluated through indicators such as property price, commission income, yield, and payback period, while qualitative factors—including property condition, owner cooperation, and anticipated future business opportunities—also significantly influence decisions. The study further identifies strong needs for public-sector involvement, particularly in infrastructure improvements, flexible regulatory operation, and support for unresolved inheritance issues. These findings suggest that addressing the vacant house challenges in Nagasaki will require coordinated efforts and clearly defined roles shared among government, industry organizations, and private real estate firms.長崎大学大学院工学研究科研究報告, 56(106), pp.102-109; 2026departmental bulletin pape
高炉スラグ微粉末大量含有コンクリートにおける浸せき試験による遮塩性の評価
High-volume blast furnace slag fine powder concrete (70% replacement) and ordinary concrete were immersed in sodium chloride aqueous solution for up to 120 days to evaluate their chloride barrier properties. The immersion test results confirmed that the high-blast-furnace-slag-fine-powder-content concrete exhibited lower chloride ion penetration and superior salt barrier properties. Furthermore, the apparent diffusion coefficient was calculated, confirming its superior salt barrier properties.長崎大学大学院工学研究科研究報告, 56(106), pp.110-117; 2026departmental bulletin pape
Data Resource Profile: Climate and Enteric Diseases Research Project (ClimED)
International Journal of Epidemiology, 55(1), art. no. dyaf215; 2026journal articl
中学校道徳科,総合的な学習の時間,特別活動における資質・能力育成の検討―各教科との比較にもとづく特質―
長崎大学教育学部紀要:教育科学 通巻 第89号 (Bulletin of Faculty of Education, Nagasaki University: Educational Science, Vol.89)長崎大学教育学部紀要, 11, pp.49-64; 2025departmental bulletin pape
Publication Journals of Research on Wasp Spider, Argiope bruennichi: Specialized or General?
This original research article discusses the publication trends of research on the wasp spider, Argiope bruennichi (Scopoli, 1772), in specialized arachnological journals versus general scientific journals. Context on arachnological journals and their role in publishing spider-related research is introduced. It also introduces A. bruennichi as a widely recognized and easily identifiable spider species distributed across the Palearctic realm. The present study analyzed research articles published from 2019 to 2021 using Google Scholar, focusing on papers that included 'Argiope bruennichi' in their content. The results showed that a total of 78 research articles were identified during this period. The majority of these articles were published in general scientific journals rather than specialized arachnological journals. In 2019, 79% of the articles were published in general journals, while in 2020 and 2021, the percentages were 86% and 80% respectively. Upon careful analysis, several unique and interesting insights emerge. First, this study highlights a shift in publication trends, with more spider-related research appearing in interdisciplinary journals rather than specialized arachnological publications. This suggests a growing interest in spider research across various scientific disciplines. Second, the choice of A. bruennichi as a focal species is noteworthy due to its wide distribution and accessibility, making it valuable for both expert and amateur studies. Lastly, the author points out the potential impact of new open-access online scientific journals on the relative prominence of traditional arachnological journals, indicating a changing landscape in scientific publishing within this field.Journal of Palestine Ahliya University for Research and Studies, 4(1), pp.185-190; 2025journal articl
Cost-effective methods for accurate calculation of ion-solvent binding energies
This paper presents a benchmarking study of DFT functionals and basis sets for the calculation of molecular geometries and binding energies of ion-solvent clusters. The systems examined include various monoatomic and polyatomic ions in water, methanol, and DMSO clusters. The use of high-quality triple-ζ basis sets is recommended for calculation of geometries though less-costly double-ζ basis set can often give good results due to systematic error cancellation. ωB97X-V and ωB97M-V are the two best-performing methods for single point energy calculation with mean errors well below the threshold of chemical accuracy (∼5 kJ mol−1) relative to DLPNO-CCSD(T)/CBS and revDSD-PBEP86-D4/def2-TZVPPD benchmarks.Chemical Physics Letters, 870, art. no. 142065; 2025journal articl
Serious psychological distress among slum dwellers and unhoused people in Ho Chi Minh City, Vietnam: a pilot study
Background: Mental health is reported to be a significant issue among slum dwellers and unhoused (homeless) individuals worldwide, particularly those facing housing instability. Ho Chi Minh City, the largest city and industrial hub of Vietnam, has a substantial population experiencing housing instability, although its exact scale has rarely been accurately measured. This study aimed to estimate the prevalence of serious psychological distress among slum dwellers and unhoused individuals in Ho Chi Minh City and to identify factors associated with serious psychological distress. Methods: A cross-sectional survey involving 415 individuals experiencing housing instability, including 383 slum dwellers and 32 unhoused individuals, was conducted between November 2023 and April 2024. Data were collected using a structured questionnaire incorporating the 6-item version of the Kessler Psychological Distress Scale (K6). Results: The overall prevalence of serious psychological distress was 19.8%, with 18.5% among slum dwellers and 34.4% among unhoused people. Multiple logistic regression analysis revealed significant associations between serious psychological distress and female gender (adjusted odds ratio = 3.086, p < 0.001), labour exploitation (adjusted odds ratio = 1.914, p = 0.046), and debt (adjusted odds ratio = 3.109, p < 0.001). Notably, 68.7% of the participants reported experiencing some form of labour exploitation, which commonly included contract rejections, forced overwork, wage theft, and physical or verbal abuse. Furthermore, 43.7% of the participants were in debt, with 38.6% borrowing from moneylenders. Conclusions: The prevalence of serious psychological distress among individuals with unstable housing in Ho Chi Minh City was significantly higher than that of the general population, highlighting the urgent need for mental health interventions targeted at this population. Those with serious psychological distress frequently faced both labour and economic exploitation, without sufficient social protection. In terms of labour exploitation, policy interventions, particularly from an occupational health perspective, are necessary. To address economic exploitation through debt, given the prevalence of loan sharks, efforts to crack down on predatory lending and promote financial inclusion are essential.Tropical Medicine and Health, 53(1), art. no. 53; 2025journal articl
Reliable Quantum-Chemistry Heats of Formation for an Extensive Set of C-, H-, N-, O-, F-, S-, Cl-, Br-Containing Molecules in the NIST Chemistry Webbook
In the present study, we have computed the heat of formation(HOF) for over 500 C-, H-, N-, O-, F-, S-, Cl-, Br-containing molecules in theNIST Chemistry Webbook with a previously established methodology [from thehighest- to lowest-level methods, W1X-2, CCSD(T)-F12b, DSD-PBEP86, andωB97M-V, with the lower levels calibrated against higher levels for the atomicenergies, see: J. Phys. Chem. A 2022, 126, 4981−4990]. We find a reasonable levelof agreement between the computed and NIST values for the present set ofspecies. However, the set of F-containing compounds shows considerably largerdiscrepancies, which can in part be attributed to dubious experimental values, aswe have demonstrated in some cases. With our highest-level computed HOFs, wevalidated the lower-level methods used in our protocol. Specifically, CCSD(T)-F12b yields chemically accurate (±4.2 kJ mol−1)values for all types of molecules, while DSD-PBEP86 and ωB97M-V yield similar levels of accuracy for most systems, with keyexceptions being molecules with numerous electron-withdrawing F and NO2 groups. Our results further support the use of theprotocol for the computation of HOFs, particularly for systems with few reliable reference values.Journal of Physical Chemistry A, 129(15), pp.3578-3586; 2025journal articl