Koji Fujita
Biographic Data
| ID | 3850853 |
|---|---|
| NAME | Koji Fujita |
| GIVEN NAMES | Koji |
| FAMILY NAME | Fujita |
| SIGNATURE | FUJITA K |
| AFFILIATIONS | Tokyo Metropolitan Institute of Gerontology |
| ORCID | 0000-0001-5183-1849 |
| VERIFIED | Yes |
| TOTAL WORKS | 19 |
| TOTAL CITATIONS | 7 |
| AUTHOR COUNT | 19 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1993 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 1 |
Precipitation phase drives seasonal and decadal snowline changes in high mountain Asia
Snow cover is of key importance for water resources in high mountain Asia (HMA) and is expected to undergo extensive changes in a warming climate. Past studies have quantified snow cover changes with satellite products of relatively low spatial resolution (∼500 m) which are hindered by the steep topography of this mountain region. We derive snowlines from Sentinel-2 and Landsat 5, 7 and 8 images, which, thanks to their higher spatial resolution, …
Peer Support and Relational Recovery in a Rural Community-Based Ibasho: Implications for Hikikomori Support Models
Relationship between face‐to‐face and non‐face‐to‐face communication, and well‐being in older volunteers during the pandemic: The REPRINTS project
Volunteering older adults plays a role in maintaining well‐being through facilitation of face‐to‐face communication. However, the COVID‐19 pandemic reduced volunteer opportunities involving physical interaction among seniors. While studies have reported that indirect communication such as non‐face‐to‐face can support and improve mental health, it remains unclear whether it can substitute face‐to‐face communication among older volunteers accustome…
A Wiggle-Matched 297-Yr Tree-Ring Oxygen Isotope Record From Thailand: Investigating the 14 C Offset Induced by Air Mass Transport From the Indian Ocean
Regional offsets from Northern Hemisphere radiocarbon ( 14 C) calibration curves are widely recognized for monsoon Asia and often hinder accurate 14 C dating. In this paper, we explore the possible linkage between summer monsoon intensity and 14 C offsets using tree-ring δ 18 O and 14 C data from Thailand. We developed a 297-yr floating tree-ring δ 18 O chronology comprising seven teak log-coffin samples from the Ban Rai rock shelter site, northw…
Human language evolution: A view from theoretical linguistics on how syntax and the lexicon first came into being
Human language is a multi-componential function comprising several sub-functions each of which may have evolved in other species independently of language. Among them, two sub-functions, or modules, have been claimed to be truly unique to the humans, namely hierarchical syntax (known as “Merge” in linguistics) and the “lexicon.” This kind of species-specificity stands as a hindrance to our natural understanding of human language evolution. Here w…
Suicide Prevention Program with Cooperation from Senior Volunteers, Governments, and Schools: A Study of the Intervention Effects of “Educational Lessons Regarding SOS Output” Focusing on Junior High …
As a suicide countermeasure for young people, implementing "SOS output education" that provides young people with opportunities and approaches to seeking support with community cooperation can be expected to reduce lifelong suicide risk. We implemented an "SOS output education" for junior high school students with cooperation from educators, government staff, and older people working as community volunteers. A total of 188 students were allocated…
Multi-decadal monsoon characteristics and glacier response in High Mountain Asia
Glacier health across High Mountain Asia (HMA) is highly heterogeneous and strongly governed by regional climate, which is variably influenced by monsoon dynamics and the westerlies. We explore four decades of glacier energy and mass balance at three climatically distinct sites across HMA by utilising a detailed land surface model driven by bias-corrected Weather Research and Forecasting meteorological forcing. All three glaciers have experienced…
Influence of “Face-to-Face Contact” and “Non-Face-to-Face Contact” on the Subsequent Decline in Self-Rated Health and Mental Health Status of Young, Middle-Aged, and Older Japanese Adults: A Two-Year …
This study aims to identify the independent influence of face-to-face contact (FFC) and non-face-to-face contact (NFFC) on the subsequent decline in self-rated health and mental health status by age. A total of 12,000 participants were randomly selected among residents in the study area, and 1751 of them responded to both the 2016 and 2018 mail surveys. The participants were subsequently classified into three age groups (25-49: Young adults; 50-6…
Downwasting of the debris-covered area of Lirung Glacier in Langtang Valley, Nepal Himalaya, from 1974 to 2010
Topographic controls on the debris-cover extent of glaciers in the Eastern Himalayas: Regional analysis using a novel high-resolution glacier inventory
Drug Dependence Treatment Awareness among Japanese Female Stimulant Drug Offenders
Few stimulant drug users receive adequate treatment. This cross-sectional study describes the characteristics of female drug offenders that use stimulants and clarifies the factors related to the awareness of treatment for drug dependencies. We included 80 females imprisoned due to stimulant control law violations from 2012 to 2015. The characteristics of the female prisoners were stratified according to various treatment awareness levels, and as…
DNA analysis for section identification of individual Pinus pollen grains from Belukha glacier, Altai Mountains, Russia
Pollen taxon in sediment samples can be identified by analyzing pollen morphology. Identification of related species based on pollen morphology is difficult and is limited primarily to genus or family. Because pollen grains of various ages are preserved at below 0 °C in glaciers and thus are more likely to remain intact or to suffer little DNA fragmentation, genetic information from such pollen grains should enable identification of plant taxa be…
Interest in dietary pattern, social capital, and psychological distress: A cross-sectional study in a rural Japanese community
Low interest in dietary pattern, low frequency of intake of vegetables, and low levels of social capital were significantly associated with psychological distress after adjusting for socio-demographic variables
Association between psychological distress and a sense of contribution to society in the workplace
Psychological distress in the workplace was associated with sense of contribution to society. Therefore, workplace mental health promotion should consider the workers' sense of contribution to society
Variations in discharge from the Qilian mountains, northwest China, and its effect on the agricultural communities of the Heihe basin, over the last two millennia
Over the last two millennia, agricultural land in the Hei river basin, northwest China, has been subjected to a series of significant droughts and flood events. These documented hydrological events were compared to estimates of fluvial and fluvioglacial discharge from the mountains. Areal extents of glaciers are important for validation as water mass remaining in mountain area, although glacier area occupied only about 1.5 % at present in this hi…
Recent changes in Imja Glacial Lake and its damming moraine in the Nepal Himalaya revealed by in situ surveys and multi-temporal Aster imagery
Changes in the area and bathymetry of Imja Glacial Lake and in the elevation of its damming moraine, Khumbu region, Nepal Himalaya are investigated. Previously reported changes in the lake area have been updated by multi-temporal ASTER images, which revealed a decreased expansion rate after 2000. A provisional expansion of the lake observed in 2004, from which some studies concluded an accelerated lake expansion due to global warming, has, from 2…
A shallow ice core re-drilled on the Dunde Ice Cap, western China: Recent changes in the Asian high mountains
A 51 m deep ice core was re-drilled on the Dunde Ice Cap of western China in 2002, 15 years after the previous ice core drilling in 1987. Dating by seasonal variations in δ18O and particle concentration showed that this 51 m deep ice core covered approximately the last 150 years. The stratigraphy and density showed that more than 90% of the ice core was refrozen ice layers, which comprised less than 5% of the annual accumulation in the older core…
A Prospect for Evolutionary Adequacy: Merge and the Evolution and Development of Human Language
Biolinguistic minimalism seeks a deeper explanation of the design, development and evolution of human language by reducing its core domain to the bare minimum including the set-formation operation Merge. In an attempt to open an avenue of research that may lead to an evolutionarily adequate theory of language, this article makes the following proposals: (i) Merge is the elementary combinatorial device that requires no more decomposition; (ii) the…
In defense of LF Pied-piping
A Prospect for Evolutionary Adequacy: Merge and the Evolution and Development of Human Language
Biolinguistic minimalism seeks a deeper explanation of the design, development and evolution of human language by reducing its core domain to the bare minimum including the set-formation operation Merge. In an attempt to open an avenue of research that may lead to an evolutionarily adequate theory of language, this article makes the following proposals: (i) Merge is the elementary combinatorial device that requires no more decomposition; (ii) the…
In defense of LF Pied-piping
Recent changes in Imja Glacial Lake and its damming moraine in the Nepal Himalaya revealed by in situ surveys and multi-temporal Aster imagery
Changes in the area and bathymetry of Imja Glacial Lake and in the elevation of its damming moraine, Khumbu region, Nepal Himalaya are investigated. Previously reported changes in the lake area have been updated by multi-temporal ASTER images, which revealed a decreased expansion rate after 2000. A provisional expansion of the lake observed in 2004, from which some studies concluded an accelerated lake expansion due to global warming, has, from 2…
A shallow ice core re-drilled on the Dunde Ice Cap, western China: Recent changes in the Asian high mountains
A 51 m deep ice core was re-drilled on the Dunde Ice Cap of western China in 2002, 15 years after the previous ice core drilling in 1987. Dating by seasonal variations in δ18O and particle concentration showed that this 51 m deep ice core covered approximately the last 150 years. The stratigraphy and density showed that more than 90% of the ice core was refrozen ice layers, which comprised less than 5% of the annual accumulation in the older core…
A Prospect for Evolutionary Adequacy: Merge and the Evolution and Development of Human Language
Biolinguistic minimalism seeks a deeper explanation of the design, development and evolution of human language by reducing its core domain to the bare minimum including the set-formation operation Merge. In an attempt to open an avenue of research that may lead to an evolutionarily adequate theory of language, this article makes the following proposals: (i) Merge is the elementary combinatorial device that requires no more decomposition; (ii) the…
Association between psychological distress and a sense of contribution to society in the workplace
Psychological distress in the workplace was associated with sense of contribution to society. Therefore, workplace mental health promotion should consider the workers' sense of contribution to society
Variations in discharge from the Qilian mountains, northwest China, and its effect on the agricultural communities of the Heihe basin, over the last two millennia
Over the last two millennia, agricultural land in the Hei river basin, northwest China, has been subjected to a series of significant droughts and flood events. These documented hydrological events were compared to estimates of fluvial and fluvioglacial discharge from the mountains. Areal extents of glaciers are important for validation as water mass remaining in mountain area, although glacier area occupied only about 1.5 % at present in this hi…
DNA analysis for section identification of individual Pinus pollen grains from Belukha glacier, Altai Mountains, Russia
Pollen taxon in sediment samples can be identified by analyzing pollen morphology. Identification of related species based on pollen morphology is difficult and is limited primarily to genus or family. Because pollen grains of various ages are preserved at below 0 °C in glaciers and thus are more likely to remain intact or to suffer little DNA fragmentation, genetic information from such pollen grains should enable identification of plant taxa be…
Interest in dietary pattern, social capital, and psychological distress: A cross-sectional study in a rural Japanese community
Low interest in dietary pattern, low frequency of intake of vegetables, and low levels of social capital were significantly associated with psychological distress after adjusting for socio-demographic variables
Drug Dependence Treatment Awareness among Japanese Female Stimulant Drug Offenders
Few stimulant drug users receive adequate treatment. This cross-sectional study describes the characteristics of female drug offenders that use stimulants and clarifies the factors related to the awareness of treatment for drug dependencies. We included 80 females imprisoned due to stimulant control law violations from 2012 to 2015. The characteristics of the female prisoners were stratified according to various treatment awareness levels, and as…
Downwasting of the debris-covered area of Lirung Glacier in Langtang Valley, Nepal Himalaya, from 1974 to 2010
Topographic controls on the debris-cover extent of glaciers in the Eastern Himalayas: Regional analysis using a novel high-resolution glacier inventory
Human language evolution: A view from theoretical linguistics on how syntax and the lexicon first came into being
Human language is a multi-componential function comprising several sub-functions each of which may have evolved in other species independently of language. Among them, two sub-functions, or modules, have been claimed to be truly unique to the humans, namely hierarchical syntax (known as “Merge” in linguistics) and the “lexicon.” This kind of species-specificity stands as a hindrance to our natural understanding of human language evolution. Here w…
Suicide Prevention Program with Cooperation from Senior Volunteers, Governments, and Schools: A Study of the Intervention Effects of “Educational Lessons Regarding SOS Output” Focusing on Junior High …
As a suicide countermeasure for young people, implementing "SOS output education" that provides young people with opportunities and approaches to seeking support with community cooperation can be expected to reduce lifelong suicide risk. We implemented an "SOS output education" for junior high school students with cooperation from educators, government staff, and older people working as community volunteers. A total of 188 students were allocated…
Multi-decadal monsoon characteristics and glacier response in High Mountain Asia
Glacier health across High Mountain Asia (HMA) is highly heterogeneous and strongly governed by regional climate, which is variably influenced by monsoon dynamics and the westerlies. We explore four decades of glacier energy and mass balance at three climatically distinct sites across HMA by utilising a detailed land surface model driven by bias-corrected Weather Research and Forecasting meteorological forcing. All three glaciers have experienced…
Influence of “Face-to-Face Contact” and “Non-Face-to-Face Contact” on the Subsequent Decline in Self-Rated Health and Mental Health Status of Young, Middle-Aged, and Older Japanese Adults: A Two-Year …
This study aims to identify the independent influence of face-to-face contact (FFC) and non-face-to-face contact (NFFC) on the subsequent decline in self-rated health and mental health status by age. A total of 12,000 participants were randomly selected among residents in the study area, and 1751 of them responded to both the 2016 and 2018 mail surveys. The participants were subsequently classified into three age groups (25-49: Young adults; 50-6…
A Wiggle-Matched 297-Yr Tree-Ring Oxygen Isotope Record From Thailand: Investigating the 14 C Offset Induced by Air Mass Transport From the Indian Ocean
Regional offsets from Northern Hemisphere radiocarbon ( 14 C) calibration curves are widely recognized for monsoon Asia and often hinder accurate 14 C dating. In this paper, we explore the possible linkage between summer monsoon intensity and 14 C offsets using tree-ring δ 18 O and 14 C data from Thailand. We developed a 297-yr floating tree-ring δ 18 O chronology comprising seven teak log-coffin samples from the Ban Rai rock shelter site, northw…
Relationship between face‐to‐face and non‐face‐to‐face communication, and well‐being in older volunteers during the pandemic: The REPRINTS project
Volunteering older adults plays a role in maintaining well‐being through facilitation of face‐to‐face communication. However, the COVID‐19 pandemic reduced volunteer opportunities involving physical interaction among seniors. While studies have reported that indirect communication such as non‐face‐to‐face can support and improve mental health, it remains unclear whether it can substitute face‐to‐face communication among older volunteers accustome…
Precipitation phase drives seasonal and decadal snowline changes in high mountain Asia
Snow cover is of key importance for water resources in high mountain Asia (HMA) and is expected to undergo extensive changes in a warming climate. Past studies have quantified snow cover changes with satellite products of relatively low spatial resolution (∼500 m) which are hindered by the steep topography of this mountain region. We derive snowlines from Sentinel-2 and Landsat 5, 7 and 8 images, which, thanks to their higher spatial resolution, …
Peer Support and Relational Recovery in a Rural Community-Based Ibasho: Implications for Hikikomori Support Models
Geography (8 works) · Geology (8 works) · Physical geography (8 works) · Cryospheric studies and observations (7 works) · Climate change and permafrost (6 works) · Glacier (6 works) · Medicine (6 works) · Psychology (6 works) · Climatology (5 works) · Geomorphology (5 works)