This study examines the impact of digital literacy on the levels of depressive symptoms of older adults,utilizing data from the 2022 China Family Panel Studies(CFPS).Factor analysis was used to construct digital liter...This study examines the impact of digital literacy on the levels of depressive symptoms of older adults,utilizing data from the 2022 China Family Panel Studies(CFPS).Factor analysis was used to construct digital literacy indicators,and OLS multiple linear regression modeling was carried out;the results demonstrate that digital literacy exerts a significant negative influence on depressive symptoms in older adults(β=-0.5385,p<0.01),and the findings are robust.Mechanism analysis reveals that digital literacy reduces depressive symptoms by enhancing future confidence(the mediation effect accounts for 18.0%).Heterogeneity analysis also indicates that there are more pronounced depressive symptoms-alleviating effects among male,married,and younger-old adults(aged 60-79)(p<0.01).Policy recommendations include implementing tiered digital literacy education programs with targeted support for vulnerable groups,enriching digital education resources through dedicated digital service platforms for the elderly,and strengthening psychological interventions to boost future confidence for effective depressive symptoms mitigation.展开更多
Abstract： The Tigris and Euphrates Rivers are the main sources of water in Iraq. Iraq used to receive 33×109 m^3 of river water per year at Hit, 200 km downstream from the Syrian border before the 1970s. In 1980...Abstract： The Tigris and Euphrates Rivers are the main sources of water in Iraq. Iraq used to receive 33×109 m^3 of river water per year at Hit, 200 km downstream from the Syrian border before the 1970s. In 1980s, the discharge decreased to as little as 8 × 10^9 m^3 per year at Hit. The decreasing of discharge and water level in the Euphrates River causes problems of both quantity and quality, such as the increasing salinity in the internal delta downstream, the TDS （total dissolves salinity） at Hit has increased from less than 500 ppm to about 700 ppm. By 1989, the Euphrates＇ salinity at A1 Qaim reached 1,000 ppm. Currently, the TDS of the river, at AI Qaim, is greater than 1,000 ppm. The problem of control salinity has received considerable attention particularly when the surface water is extremely limited with poorly available ground water supply. The field measurement has achieved for TDS, pH （hydrogen ion）, EC （electric conductivity）, coliform content and heavy metal for three sectors in the Euphrates River basin in Iraq as well as the lakes of Tharthar, Habbaniya, and AI-Razzaza. The statistical analysis was made to relate these parameter with discharge and water level, which are refered to the important effect of the flow in river on the water quality of Euphrates River. The storage of water in the lakes Al-tharthar, Al-habbanya, and A1-Razzaza has a negative effects on the water quality, and shows that the best method for storage water is the reservoirs along river stream.展开更多
基金Research on the Implementation Path and Optimization of Labor Relations Consultation under the Platform Economy(ID:2024CSH048)a youth project of the National Social Science Fund of China.
文摘This study examines the impact of digital literacy on the levels of depressive symptoms of older adults,utilizing data from the 2022 China Family Panel Studies(CFPS).Factor analysis was used to construct digital literacy indicators,and OLS multiple linear regression modeling was carried out;the results demonstrate that digital literacy exerts a significant negative influence on depressive symptoms in older adults(β=-0.5385,p<0.01),and the findings are robust.Mechanism analysis reveals that digital literacy reduces depressive symptoms by enhancing future confidence(the mediation effect accounts for 18.0%).Heterogeneity analysis also indicates that there are more pronounced depressive symptoms-alleviating effects among male,married,and younger-old adults(aged 60-79)(p<0.01).Policy recommendations include implementing tiered digital literacy education programs with targeted support for vulnerable groups,enriching digital education resources through dedicated digital service platforms for the elderly,and strengthening psychological interventions to boost future confidence for effective depressive symptoms mitigation.
文摘Abstract： The Tigris and Euphrates Rivers are the main sources of water in Iraq. Iraq used to receive 33×109 m^3 of river water per year at Hit, 200 km downstream from the Syrian border before the 1970s. In 1980s, the discharge decreased to as little as 8 × 10^9 m^3 per year at Hit. The decreasing of discharge and water level in the Euphrates River causes problems of both quantity and quality, such as the increasing salinity in the internal delta downstream, the TDS （total dissolves salinity） at Hit has increased from less than 500 ppm to about 700 ppm. By 1989, the Euphrates＇ salinity at A1 Qaim reached 1,000 ppm. Currently, the TDS of the river, at AI Qaim, is greater than 1,000 ppm. The problem of control salinity has received considerable attention particularly when the surface water is extremely limited with poorly available ground water supply. The field measurement has achieved for TDS, pH （hydrogen ion）, EC （electric conductivity）, coliform content and heavy metal for three sectors in the Euphrates River basin in Iraq as well as the lakes of Tharthar, Habbaniya, and AI-Razzaza. The statistical analysis was made to relate these parameter with discharge and water level, which are refered to the important effect of the flow in river on the water quality of Euphrates River. The storage of water in the lakes Al-tharthar, Al-habbanya, and A1-Razzaza has a negative effects on the water quality, and shows that the best method for storage water is the reservoirs along river stream.
