Kyoto City Research Articles

Analysis of Transportation Choices Affected by the 2024 Hokuriku Shinkansen Tsuruga Extension

The Hokuriku Shinkansen is among the five main Shinkansen lines in Japan. It starts from the capital, Tokyo, and passes through the Hokuriku region (Nagano City, Toyama City, and Kanazawa City) before reaching the Kansai region (Kyoto City and Osaka City). In Japan, the Hokuriku Shinkansen is being developed to increase the number of visitors in the area by shortening travel times and ensuring transportation networks in the event of a disaster; the Kanazawa–Tsuruga extension was opened on Saturday, 16 March 2024. The shortened travel times with this opening are expected to increase the number of visitors to the Hokuriku region and other regions, such as the Tokyo metropolitan area. The Tsuruga extension opening will connect the Hokuriku region with the Tokyo metropolitan area through direct service; however, travel between the Kansai and Chukyo regions will require transfers at Tsuruga Station, which would reduce convenience. Consequently, the flow of people in the Hokuriku region is expected to change significantly after spring 2024. Therefore, this study conducted a questionnaire survey of Kanazawa residents in Ishikawa Prefecture prior to the opening of the Tsuruga extension to analyze its effect on the choice of modes of transportation for travel to the Kansai region. The Hokuriku Shinkansen was found to be the most popular route for travel to the Kansai region after the opening of the Tsuruga extension, and the Hokuriku Shinkansen users prioritized comfort during travel and shorter travel times. Moreover, a high proportion of Hokuriku Shinkansen users were unemployed and received pensions, whereas a high proportion of private automobile users were students, housewives, or other people with no income.

Increase in Households Triggered by Accommodation Closure Due to the COVID-19 Pandemic in the Historical Center of Kyoto City

The COVID-19 pandemic has forced many accommodations to close. However, the pandemic might play an important role in providing an opportunity to achieve sustainable tourism with a good balance between housing for residents and accommodation for tourists. As the theoretical framework, this study aims to investigate the change in households triggered by accommodation closure due to the COVID-19 pandemic in Kyoto City’s historical center. Furthermore, the causes of these changes were examined by analyzing the real estate properties traded on the market. For the analysis, this study considered the COVID-19 pandemic as a natural experiment to investigate the causal relationship between the number of households, closed accommodations, and real estate properties. As a result, it was found that households increased by approximately 1.34 in neighborhood associations with closed simple accommodations. Regarding the causes of the increase, closed simple accommodation properties tend to change to short-term rentals. This study also highlighted that closed simple accommodations have significantly smaller room sizes than other property types, with only slightly higher prices. As a theoretical contribution, our findings suggest that the pandemic might have suppressed tourism gentrification, but increased the number of households.

Environmental drivers of sediment accumulation in urban sewer systems: A case study of Kyoto City, Japan

Sediment accumulation can reduce the drainage capacity of sewer systems, and thus increase the risk of urban flooding and jeopardize the safety of urban environments. The interaction between multiple environmental factors drives sedimentation in sewer systems, but this interaction is poorly understood. To fill this gap, this study examined the interaction between five categories of environmental factors (population, traffic, climate, air quality, and wastewater quality: 25 factors overall) and the effects of these factors on sediment accumulation in different sewer system structures (open channels (OCs), circular channels (CCs), junctions) in Kyoto, Japan, from 2014 to 2023. The results showed that population and traffic contributed to sediment accumulation through pollutant emission, whereas climate factors promoted sediment accumulation by enhancing wash-off and the deposition of air pollutants. Most sediment was deposited in OCs and junctions under the combined effects of climate and air quality. Air quality has a greater influence on sedimentation in the OCs than climate, and the opposite is found for Junction, whereas sedimentation in CCs was mainly influenced by the combined effects of climate, air quality, and wastewater quality. Photochemical oxidants, humidity, temperature, and vapor pressure had the greatest impact on sediment deposition in OCs and junctions, while wastewater alkalinity, NH4-N and PO4-P concentration, and water volume had a non-negligible effect on CCs sedimentation. These results emphasize the key role of climate-driven wash-off and dry/wet deposition, and the localized role of wastewater quality (in CCs), in sewer sedimentation. These insights can inform the predictive modeling of sewer sedimentation during climate change.

The intergenerational learning effects of a home study program for elementary and junior high school children on knowledge and awareness of plastic consumption

Education through intergenerational learning (IGL) can be a key to consumer behavior change to combat plastic issues. The objectives of this study are to create a home study program that fosters IGL, targeting elementary and junior high school children of Kyoto city, understand if the program can increase student’s personalization of plastics issues, and understand if IGL can play a role in enabling plastic reduction actions in the household. A program, in which the 25 participating children proposed, executed, and monitored 3 actions to reduce plastic consumption, including their family, was successfully developed. To analyze the changes, children’s pre- and post-questionnaires and parents post-questionnaire were distributed. By experiencing the program, children felt increased guilt toward plastic use. Qualitative analysis revealed the barriers (lack of options, habits, lack of information) felt by the children when trying to reduce plastic. Feelings of guilt and facing barriers are parts of personalization and indicate that the program had initiated personalization process. In terms of IGL, qualitative analysis revealed that families that had social issues-based conversations during the program, and children who themselves decided reduction actions, engaged in plastic reduction better. Hence, education centering around IGL with effective personalization can influence household behavior.

Synergies and trade‐offs quantification from regional waste policy to sustainable development goals: The case of Kyoto City

AbstractWaste management policies introduced at regional levels can have a bearing effect on sustainable development goal (SDG) achievement at such levels, promoting certain SDG targets, while hindering other SDG targets. This work introduces an empirical methodology for estimating the synergies and trade‐offs for a city‐level waste management policy with SDG achievements, taking the case of Kyoto City's extensive waste management policy package and its interactions with renewable energy (RE) development (SDG 7), decent economic growth (SDG 9), reduced inequalities (SDG 10), and sustainable consumption (SDG 12). Similar interactions at the national‐level are also enumerated with the justified indicators at the city‐level being extended to the national‐level. Through pairwise correlation, multiple correlation, and regression, four hypotheses for circular economy compatibility with SDG achievement were tested. It was found that manufacturing value and small business growth is stunted by circular economy‐based waste policies, while resource efficiency is promoted. Cultural and social structures have trade‐offs with stringent waste management at city‐levels, but is neutral at aggregated levels. RE development is also synergetic with circular economy‐based waste management. This methodology shows a pathway as to how national‐ and city‐level policies can be integrated with each other in order to optimize waste management and overall sustainability.

Public attitudes to urban wild deer (Cervus nippon) and management policies: A case study of Kyoto City, Japan

The expansion of urban areas has resulted in the fragmentation and reduction of natural habitats. This leads to a fundamental reconfiguration of interactions between humans and wildlife, with profound ecological, social, and policy implications. However there is a research gap in understanding public perceptions of urban wildlife and their management. This study pursues three objectives: (1) to explore the primary types of conflicts between the public and urban wildlife, focusing on Sika deer (Cervus nippon) as an example; (2) to examine public attitudes towards urban deer; and (3) to investigate differences in public acceptance of hunting and fencing management policies. A questionnaire survey was conducted in the urban area of Kyoto City, Japan in September 2022 (n = 759). The survey addressed issues related to deer behavior in the city, public perceptions of urban deer, and feedback on management policies We employed statistical descriptive analysis to study the main ways in which people interact with urban deer. Subsequently, we examined the urban deer image from the public perspective and public perceptions of urban deer. Additionally, mining analysis was conducted on open-ended responses, and public demands were explored in conjunction with feedback on current management schemes in Kyoto City The results indicate that the main type of human-urban deer conflict has an impact on damaging urban vegetation. Public attitudes towards urban deer and other wildlife (besides deer) show significant differences but tend towards negative attitudes. We found a positive inclination towards the efficacy of fencing as a viable solution concurrently revealing a low-approving sentiment regarding hunting policies. These findings bear implications for the development and enhancement of sustainable management strategies aimed at mitigating the complex challenges posed by the swift urbanisation and evolution of urban ecosystems.

Association of decreased frequency of conversation with depression, oral function and eating alone: A cross-sectional study of older adults during the COVID-19 pandemic.

This study examined the associations between geriatric factors and decreased opportunities for conversation among older adults amid a period of self-restraint during the COVID-19 pandemic. A cross-sectional questionnaire-based survey was carried out in October 2020. The participants were 204 residents aged ≥65 years staying at a private care home in Kyoto city, Japan. Logistic regression analysis was carried out with the reduction of conversation opportunities as the dependent variable, and geriatric factors as independent variables after adjusting for age and sex. We compared the decreased frequency of opportunities between residents in the assisted living wing and in the nursing care wing of the private care home. The percentages of respondents who reported a decrease in the opportunities for conversation among themselves were 43.9% for residents in the assisted living wing and 19.7% for those in the nursing care wing. After adjusting for age and sex, the opportunities for conversation was significantly associated with the basic activities of daily living (OR 1.07, 95% CI 1.01-1.12), instrumental self-maintenance (OR 1.25, 95% CI 1.08-1.46), intellectual activity (OR 1.35, 95% CI 1.09-1.66), depression (OR 1.13, 95% CI 1.04-1.23), depressive mood (OR 3.83, 95% CI 1.98-7.42), decreased motivation (OR 3.11, 95% CI 1.58-6.12), appetite loss (OR 4.32, 95% CI 1.54-12.07), swallowing function (OR 1.05, 95% CI 1.00-1.10), chewing difficulty (OR 2.50, 95% CI 1.31-4.75) and eating alone (OR 2.5, 95% CI 1.35-4.62). Decreased opportunities for conversation was more perceived among older adults with higher daily functioning, suggesting that it is associated with depressed mood, oral function and solitary eating. Geriatr Gerontol Int 2024; 24: 385-391.

Promotion by KOL and Acquaintances in Differentiated Products: By the Case of Nintendo Switch

Nintendo, founded in 1889, is a Japanese company mainly engaged in the development of electronic game hardware and software and is the pioneer of the modern electronic game industry. Nintendo Corporation is headquartered in Kyoto City, Japan. Nintendo has sold more than 2 billion copies of its software worldwide, created some of the most famous characters in the history of gaming, such as Mario, and created some of the most classic games in the history of gaming, such as The Legend of Zelda.According to Pu Yamauchi, the head of the game department, it is known that Nintendo strives to be a paradise for game artists. Nintendo believes that people who develop great games should be artists, not technicians, and therefore should be given enough freedom. That's why the Switch is so innovative today. This paper mainly focuses on the analysis of Nintendo's customer characteristics and product characteristics and puts forward corresponding marketing strategies and cures.

Implementation status of postoperative rehabilitation for older patients with hip fracture in Kyoto City, Japan: A population-based study using medical and long-term care insurance claims data.

Continuing rehabilitation after hip fractures is recommended to improve physical function and quality of life. However, the long-term implementation status of postoperative rehabilitation is unclear. This study aims to investigate the implementation status of postoperative rehabilitation for older patients with hip fractures and the factors associated with continuing rehabilitation. A retrospective cohort study evaluated medical and long-term care insurance claims data of patients aged 75 years or older in Kyoto City, Japan, who underwent hip fracture surgeries from April 2013 to October 2018. We used logistic regression analysis to examine factors associated with six-month rehabilitation continuation. Of the 8,108 participants, 8,037 (99%) underwent rehabilitation the first month after surgery, but only 1,755 (22%) continued for six months. The following variables were positively associated with continuing rehabilitation for six months: males (adjusted odds ratio: 1.41 [95% confidence interval: 1.23-1.62]), an intermediate frailty risk (1.50 [1.24-1.82]), high frailty risk (2.09 [1.69-2.58]) estimated using the hospital frailty risk scores, and preoperative care dependency levels: support level 1 (1.69 [1.28-2.23]), support level 2 (2.34 [1.88-2.90]), care-need level 1 (2.04 [1.68-2.49]), care-need level 2 (2.42 [2.04-2.89]), care-need level 3 (1.45 [1.19-1.76]), care-need level 4 (1.40 [1.12-1.75]), and care-need level 5 (1.31 [0.93-1.85]). In contrast, dementia was cited as a disincentive (0.53 [0.45-0.59]). Less than 30% of older patients continued rehabilitation for six months after surgery. Factors associated with continuing rehabilitation were male sex, higher frailty risk, care dependency before hip fracture surgeries, and non-dementia.

Consensus-Building Process for a Resource-Recycling Project Aimed at Preserving the Historical Landscape of Kitasaga, Kyoto City.

Consensus-Building Process for a Resource-Recycling Project Aimed at Preserving the Historical Landscape of Kitasaga, Kyoto City.

Effects of differences in facility types on occurrence of COVID‐19 cases and response after testing positive in nursing homes for the elderly: Case study on Kyoto City

AbstractThe outbreak of COVID‐19 became a major problem at various facilities, and aged‐care facilities were no exception. In the event of a person detected positive for the disease, outpatient facilities were suspended, but inpatient facilities could not be suspended, and it became necessary to deal with the residents and positive people. This study aimed to obtain knowledge that would lead to the prevention of the spread of COVID‐19. The effects of differences in facility types were first examined on the occurrence of COVID‐19 cases and then on the response after testing positive in nursing homes for the elderly.

Occurrence and distribution of plastic particles (10-25,000 μm) and microfibers in the surface water of an urban river network in Japan.

Urban rivers remain the key conduits conveying land-sourced plastics into the ocean. However, detailed information is limited on the concurrent evaluation over a wide array of particle size-specific abundances, characteristics, and distribution patterns of plastics in riverine environments. Therefore, this study provides a comprehensive assessment of plastic pollution in an urban river network in Japan by analyzing mesoplastics (5000-25,000 μm), large microplastics (300-5000 μm), small microplastics (SMPs, 10-300 μm), and microplastic-fibers (MPFs, 10-5000 μm) concurrently, for the first time. Sampling was conducted at seven stations in the Kamo and Katsura Rivers flowing across metropolitan Kyoto City. The analytical procedures involved infrared spectroscopy and fluorescence-staining microscopy. The concentrations of plastics were moderate compared to the global reports and gradually increased along the river flow (3550-15,840 items/m3; 180-13,180 μg/m3), mostly due to urban discharges via non-point sources. The number concentrations increased with decreasing particle size, marking 99.94% of SMPs, including 50% smaller than 40 μm. Conversely, mass concentrations decreased, exhibiting 96% larger than 1000 μm (64% mesoplastics including 20% around 5000 μm), along with 2% SMPs. Polyethylene (PE) and polyvinyl alcohol were distinct among SMPs, with PE indicating higher susceptibility to fragmentation compared to polypropylene and other polymer types. MPF concentrations were homogeneous throughout the watershed (1470-3600 items/m3; 520-1060 μg/m3), with a higher proportion of fibers smaller than 1000 μm (86%), apparently originating from polyethylene terephthalate/nylon/acrylic-like textile fibers. The proportion of MPFs surpassed particles within 100-3000 μm and was considerably high around 300 μm (> 98%). The river network of Kyoto conveys billions of tiny microplastics to the Yodo River, the primary water resource downstream, within a dry day.

A population-based study of the trend in SARS-CoV-2 diagnostic modalities from the beginning of the pandemic to the Omicron surge in Kyoto City, Kyoto, Japan

BackgroundThe coronavirus disease 2019 (COVID-19) presents critical diagnostic challenges for managing the pandemic. We investigated the 30-month changes in COVID-19 testing modalities and functional testing sites from the early period of the pandemic to the most recent Omicron surge in 2022 in Kyoto City, Japan.MethodsThis is a retrospective-observational study using a local anonymized population database that included patients' demographic and clinical information, testing methods and facilities from January 2020 to June 2022, a total of 30 months. We computed the distribution of symptomatic presentation, testing methods, and testing facilities among cases. Differences over time were tested using chi-square tests of independence.ResultsDuring the study period, 133,115 confirmed COVID-19 cases were reported, of which 90.9% were symptomatic. Although nucleic acid amplification testing occupied 68.9% of all testing, the ratio of lateral flow devices (LFDs) rapidly increased in 2022. As the pandemic continued, the testing capability was shifted from COVID-19 designated facilities to general practitioners, who became the leading testing providers (57.3% of 99,945 tests in 2022).ConclusionsThere was a dynamic shift in testing modality during the first 30 months of the pandemic in Kyoto City. General practitioners increased their role substantially as the use of LFDs spread dramatically in 2022. By comprehending and documenting the evolution of testing methods and testing locations, it is anticipated that this will contribute to the establishment of an even more efficient testing infrastructure for the next pandemic.

The Transition of Forest Cover and Its Cultural Values in Shrine/Temple Forests in the Mountainous and Foothill Areas of Kyoto City: A Study Based on Topographic Maps and Aerial Photos

There is growing interest in the diverse roles of forests in addressing climate change and biodiversity goals. Recent studies have indicated a disregard for the cultural values of forests that have been formed in close association with human activities. This may potentially lead to the loss of cultural characteristics, traditional forest knowledge, and biodiversity. This study explores historical forest dynamics and their unique cultural values from the end of the 19th century in 15 shrine/temple forests located in the mountainous and foothill areas of Kyoto city. Using geographical information systems (GIS) based on topographic maps and aerial photographs, this study investigates the forest composition in the 1890s, 1980s, and from 2010. The results indicate that approximately half of the targeted shrine/temple forests were composed of low Pinus densiflora forests and coppice forests in the 1890s. Between the 1890s and 1910s, coniferous forests were planted in these areas with the intention of land conservation and timber production. This distinctive forest cover became a typical characteristic for shrine/temple forests until the 1980s. However, from the 1980s, a decrease in the cultural value of shrine/temple forests was observed due to the lack of human activities in these forests. As a result, the distinction between shrine/temple forests and the surrounding forests has become blurred. This could potentially cause the homogenization of cultural characteristics. This study aims to inform readers of the cultural value associated with the historical landscape and biodiversity found in shrine/temple forests.

A Study on the relation between location trends of the Budget Accommodation and landprices in Kyoto City

A Study on the relation between location trends of the Budget Accommodation and landprices in Kyoto City

Policy design by “imaginary future generations” with systems thinking : a practice by Kyoto city towards decarbonization in 2050

To achieve the societal goal of becoming a sustainable decarbonized society by 2050, it is essential to design visions and policies that take into account the perspectives of future generations overcoming intergenerational conflicts. In this paper, we present an innovative framework to envision a decarbonized society in 2050 and design policies by introducing “imaginary future generations,” together with systems thinking, and analyze the effectiveness of these methods. We organized a series of workshops in which Kyoto City officials participated in the application of the framework. We demonstrate that by applying the framework, the policy measures proposed by the participants shifted from individual measures to proposals of new mechanisms and systems that do not yet exist, even if they present high hurdles for the current generation. Causal loop diagrams based on system thinking proved to be effective for increasing liveliness, reducing divergence, and improving the development of discussion themes. A questionnaire survey revealed that the workshop produced shifts in the participants’ perceptions. We conclude that the proposed framework effectively generated “futurability” in the participants and could help facilitate policy design that aims to achieve a decarbonized society by overcoming the shortsightedness of the present society.

Contamination rate of rare bacterial species detected by MALDI-TOFMS: a retrospective cohort study

When rare bacterial species are identified in blood cultures, determining the clinical significance is sometimes difficult. This study aimed to analyze the clinical significance of rare bacterial species detected in blood cultures using matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOFMS) by comparing their contamination rates with those of common species. We retrospectively analyzed medical records of adult patients with positive blood cultures at Kyoto City Hospital from 2014 to 2022. Rare species were defined by low detection rates and few PubMed reports. Of 4880 microorganisms identified from 3441 individuals, 1150 (23.6%) were classified as contamination. Meanwhile, 24 rare microorganisms were identified, of which 14 (58.3%) were classified as contamination, which was significantly higher than common species (odds ratio 4.56, 95% confidence Interval 1.88–11.50, P < 0.001). These findings may help in determining the clinical significance of rare bacterial species in blood cultures with few reported cases.

Measurement of Five Emotions Defined by Traditional Chinese Medicine With a Focus on Preventing Mild Cognitive Impairment.

Objectives: This study aimed to develop a novel Measurement of the Five Emotions (MFE) based on traditional Chinese medicine for assessing cognitive impairment in elderly individuals. Methods: Surveys were collected from 184 participants, over 65years of age, who were residents of Kyoto City, Japan. The surveys included the Measurement of the Five Emotions (MFE) and the Dementia Assessment Sheet for the Community-based Integrated Care System (DASC-21). Item-total reliability and internal consistency reliability were assessed using Spearman's correlation test and Cronbach's alpha coefficient analysis. Factor analysis was conducted to identify the main factors related to the theoretically constructed emotional reaction patterns. Criterion-related validity was examined by investigating the correlation between the scores of the 2 surveys (MFE and DASC-21). Results: The factor analysis revealed that the final version of MFE consisted of 5 factors, which accounted for a cumulative contribution rate of 57.71%. The Cronbach's alpha coefficient reached .71, indicating satisfactory internal consistency. There was a negative correlation between the MFE and DASC-21 scores with a correlation coefficient of -.3149. Furthermore, when comparing participants with lower cognitive function (DASC-21 score >26) to those with higher cognitive function, MFE subscale scores in the emotions of "Sorrow" and "Thought" were significantly lower, suggesting that these particular emotions are related to cognitive impairment. These findings confirmed the reliability and the construct validity of the MFE. Conclusion: The criterion reliability and validity tests provided evidence for the construct validity of the MFE. The negative correlation (coefficient = -.3149) between MFE scores and DASC-21 scores suggested that MFE can serve as a scale for detecting cognitive impairment.

Unveiling the Role of Zoos in Smart Cities: A Quantitative Analysis of the Degree of Smartness in Kyoto City Zoo

The rapid pace of urbanization and the emergence of social challenges, including an aging population and increased labor costs resulting from the COVID-19 pandemic, have underscored the urgency to explore smart city solutions. Within these technologically advanced urban environments, zoos have assumed a pivotal role that extends beyond their recreational functions. They face labor cost challenges and ecological considerations while actively contributing to wildlife conservation, environmental education, and scientific research. Zoos foster a connection with nature, promote biodiversity awareness, and offer a valuable space for citizens, thereby directly supporting the pillars of sustainability, public engagement, and technological innovation in smart cities. This study employs a quantitative analysis to assess the alignment between smart projects and the distinctive characteristics of Kyoto Zoo. Through questionnaires, we collected feedback on performance and importance, and subsequently employed the analytic hierarchy process and the fuzzy integrated evaluation method to obtain quantitative results. The findings reveal the high level of intelligence exhibited by Kyoto Zoo, and the analysis provides insightful guidance that can be applied to other urban facilities. At the same time, we compared Kyoto Zoo with Ueno Zoo to see the difference in intellectualization achievements in different contexts in terms of data and systems.

A Study on the Trends and Changes in the Opening and Discontinuation of Tourist Accommodation in Kyoto City

A Study on the Trends and Changes in the Opening and Discontinuation of Tourist Accommodation in Kyoto City