Search results

Shipping is a major source of air pollution, causing severe impacts on the environment and human health, greatly contributing to the creation of greenhouse gases and influencing climate change. The research was investigated to provide a better insight into the emission inventories in the Red River in Hanoi (Vietnam) that is often heavily occupied as the primary route for inner-city waterway traffic.

The total emissions of seven different pollutants (PM₁₀, PM_2.5, SO_x, CO, CO₂, NO_x and HC) were estimated using the SPD-GIZ emission calculation model.

The results show that CO₂ has the most significant contribution to the gas volume emitted: 103.21 tons/day. Remarkably, bulk carriers are the largest emission vehicle, accounting for more than 97% of total emissions, due to their superior number and large capacity.

The result to have a roadmap for making efforts to fulfil its commitment so that it could achieve its net-zero climate target by 2050 in Vietnam as committed at COP26.

In this research, the number of vehicles and types of vessels travelling on the Red River flowing within Hanoi territory and other activity data are reported. The tally data will be used to estimate emissions of seven different pollutants (PM₁₀, PM_2.5, SO_x, CO, CO₂, NO_x and HC) using a method combining both top-down and bottom-up approaches.

A five‐month, exploratory, in‐depth study was conducted in six sites across England with young people aged 11‐15 and the parents of secondary school aged children to identify drivers and barriers to involvement in physical activity. Over 100 young people were interviewed in both secondary school and out‐of‐school settings. Two group interviews were also conducted with parents. Findings highlight that both young people and parents consider physical activity important for physical, mental and social wellbeing. Clear gender differences were found in relation to regular involvement in physical activity. Young women were less likely to engage in active pursuits in and out of school, and were more critical of physical education. The research suggests that the determinants of physical activity in young people are complex. A flexible and differentiated approach to the provision and promotion of physical activity seems needed to meet the changing motivational needs and preferences of this age group.

To investigate ethnic group differences in the utilization of preventive medical care services among U.S. Asian and Latino immigrant adults.

Using data from the 2002–2003 National Latino and Asian American Study, we examined whether differences exist in the reporting of any preventive physical care or dental/optician visit during the last year across Asian and Latino immigrant groups. Following, we applied Andersen’s (1995) Behavioral Model of Health Services Use to assess how ethnic disparities in preventive care use are a function of predisposing, enabling/impeding, and need-based factors.

Descriptive results showed that among Latinos, a much lower proportion of Mexican immigrants reported a preventive medical care visit during the last year than either Cuban or Puerto Rican immigrants. Asian immigrants show less variation in use, but significant differences still exist with Filipino immigrants reporting the highest level of use, followed by Vietnamese and then Chinese immigrants. Logistic regression models also indicated that predisposing characteristics, especially aspects of acculturation status, contribute strongly to ethnic group differences in preventive care use, while enabling/disabling and need-based characteristics are less important.

While studies of medical care use often treat Asians and Latinos as homogeneous groups, our findings illustrate the need for a more detailed view of the foreign-born population. Findings also highlight the role of acculturation status in shaping group differences in preventive medical care use – and as such, the importance of considering these differences when promoting the use of timely preventive care services among immigrant populations.

To determine gendered patterns of preventive medical care (physical and dental/optical) use among pan-ethnic U.S. Asian and Latino adults.

Using National Latino and Asian American Study (2004) data, we apply Andersen’s (1995) Behavioral Model of Health Services Use to assess how preventive care use among Asian and Latino men and women varies as a function of predisposing, enabling, and need-based characteristics. We explore whether adjustment for these factors mediates gender disparities in both physical and dental/optical check-ups, and test whether certain factors operate differently among men versus women.

A higher proportion of women reported a routine care visit last year, especially among Latinos. Adjusting for predisposing, enabling, and need-based factors explained the gender difference in reporting a dental/optician check-up, but not a physical check-up, among both Asian and Latino adults.

Our findings illustrate how gender patterns in routine care use differ by race/ethnicity, and highlight the fundamental importance of enabling characteristics (especially health insurance and having a regular doctor) for shaping routine care use between men and women, both Asian and Latino. Limitations of this chapter are that the data are cross-sectional and were collected before the implementation of the Affordable Care Act, and measures are self-reported.

This chapter focuses on Asian and Latinos because they represent the fastest growing minority populations in the United States, yet few studies have evaluated gender differences in preventative health care use among these groups.

Traditional Korean buildings do not differ significantly in form or structural style according to era or building type. The authors interpret this from a generative rather than a typological perspective. The generation perspective considers factors forming the buildings and is connected to the prevailing thoughts of the era.

This study analyzes the generation method of seowon facilities in the Joseon Dynasty (1392–1897), focusing on the Dosan Seowon. Based on Koreans' long-term thinking, the authors applied the extracted architectural space generation layers for analysis, and present an integrated method of generation layers when the Dosan Seowon was built.

The immanent, physical and body perceptual layers presented for seowon formation analysis are represented by thought, form and territory. Specific aspects of these layers in the Dosan Seowon are analyzed, including the architectural arrangement that connects the land conditions with neo-Confucian courtesy and order, the collective architectural form considering the energy of yin and yang, and the elements of objects that affect the human body perception. This form of architecture was closely linked with and strongly influenced by monistic philosophy.

After the Korean War, architects judged traditional buildings only by shapes, and quickly accepted Western architecture's forms. Presenting a generative perspective of traditional Korean architecture expands the theoretical research direction of modern succession.

This is the first attempt to examine the generation method based on the Dosan Seowon's generation layers.

This study aims to provide a review for scour in complex rivers and streams with coarser bed material, steep longitudinal bed slopes and dynamic environments, in the interest of the safety and the economy of hydraulic structures. The knowledge of scour in such geographical complexities is very crucial for a comprehensive understanding of scour failures and for establishing definitive criteria to bridge this major research gap.

The existing available literature shows significant work done in case of silt, sand and small sized coarser bed material but any substantial work for bed material of gravel size or above is lacking, resulting in a wide gap. Though some researchers have attempted to explore possibilities of refining the existing models by adding pier size, shape, sediment non-uniformity and armouring effects, which otherwise have been given a miss by the various researchers, including the pioneer in the field Lacey–Inglis (1930). But still, a rational model for scour estimation in such complex conditions for global use is yet to come. This is because all the parameters governing the scour have not been studied properly till date as is evident from the globally available literature and is witnessed in the field too, in recurrent failure of hydraulic structures especially bridges.

The researchers presume that the finer materials move only as a result of erosion. However, in actual field conditions, it has been observed that the large-sized stones also roll down and cause huge erosion along the river bed and damage the hydraulic structures, especially in the steep river/stream beds along hilly slopes. This fact has been overlooked in the models available globally and has been highlighted only in the current work in an attempt to recognize this major research gap. A study carried out on a number of streams globally and in Jammu and Kashmir, India also, has shown that in steep river and stream beds with bed material consisting of gravel size or greater than gravel, large scour holes ranging from 1 m to 5 m were created by furious floods, and due to other unknown forces along the channel path and near foundations of hydraulic structures.

To the best of the authors’ knowledge, this work is purely original.

The purpose of this paper is to develop a statistical-based model to forecast future domestic water demand in the context of climate change, population growth and technological development in Yellow River.

The model is developed through the analysis of the effects of climate variables and population on domestic water use in eight sub-basins of the Yellow River. The model is then used to forecast water demand under different environment change scenarios.

The model projected an increase in domestic water demand in the Yellow River basin in the range of 67.85 × 10⁸ to 62.20 × 10⁸ m³ in year 2020 and between 73.32 × 10⁸ and 89.27 × 10⁸ m³ in year 2030. The general circulation model Beijing Normal University-Earth System Model (BNU-ESM) predicted the highest increase in water demand in both 2020 and 2030, while Centre National de Recherches Meteorologiques Climate Model v.5 (CNRM-CM5) and Model for Interdisciplinary Research on Climate- Earth System (MIROC-ESM) projected the lowest increase in demand in 2020 and 2030, respectively. The fastest growth in water demand is found in the region where water demand is already very high, which may cause serious water shortage and conflicts among water users.

The simple regression-based domestic water demand model proposed in the study can be used for rapid evaluation of possible changes in domestic water demand due to environmental changes to aid in adaptation and mitigation planning.

There is growing empirical evidence that firm heterogeneity is technologically non-neutral. This chapter extends the Gandhi, Navarro, and Rivers (2020) proxy variable framework for structurally identifying production functions to a more general case when latent firm productivity is multi-dimensional, with both factor-neutral and (biased) factor-augmenting components. Unlike alternative methodologies, the proposed model can be identified under weaker data requirements, notably, without relying on the typically unavailable cross-sectional variation in input prices for instrumentation. When markets are perfectly competitive, point identification is achieved by leveraging the information contained in static optimality conditions, effectively adopting a system-of-equations approach. It is also shown how one can partially identify the non-neutral production technology in the traditional proxy variable framework when firms have market power.

Mangroves constitute an important ecosystem because of their global extent and high productivity. These plants thrive in the intertidal zones of the tropics and subtropics that are characterized by regular tidal inundation and fluctuating salinity. Mangrove species are well adapted, both morphologically and physiologically, to survive under saline conditions, but in hypersaline environment their growth is reduced. The present chapter is a critical analysis on the impact of salinity on the growth of a common mangrove species (Hertiera fomes). The analysis has been carried out in the framework of Indian Sundarbans, which has contrasting salinity profiles in different segments owing to barrage discharge and siltation phenomena. Analysis of the decadal profile of salinity indicates a gradual lowering in the western Indian Sundarbans due to Farrakka barrage discharge and run-off from catchments. The central sector, however, exhibits a contrasting picture of increment of aquatic salinity through time, mainly due to disconnection of the Bidyadhari River with the Ganga–Bhagrirathi–Hooghly River system (in the western part). This has made the Matla River in the central Indian Sundarbans hypersaline in nature (that used to get water from the Bidyadhari River) finally leading to an insecure ecological condition for the growth and survival of mangroves. The possible remedial measures to combat the situation have also been listed considering the ecological framework of the study zone.