Flood risk mapping and analysis using an integrated framework of machine learning models and analytic hierarchy process

In this study, a new approach of machine learning (ML) models integrated with the analytic hierarchy process (AHP) method was proposed to develop a holistic flood risk assessment map. Flood susceptibility maps were created using ML techniques. AHP was utilized to combine flood vulnerability and exposure criteria. We selected Quang Binh province of Vietnam as a case study and collected available data, including 696 flooding locations of historical flooding events in 2007, 2010, 2016, and 2020; and flood influencing factors of elevation, slope, curvature, flow direction, flow accumulation, distance from river, river density, land cover, geology, and rainfall. These data were used to construct training and testing datasets. The susceptibility models were validated and compared using statistical techniques. An integrated flood risk assessment framework was proposed to incorporate flood hazard (flood susceptibility), flood exposure (distance from river, land use, population density, and rainfall), and flood vulnerability (poverty rate, number of freshwater stations, road density, number of schools, and healthcare facilities). Model validation suggested that deep learning has the best performance of AUC = 0.984 compared with other ensemble models of MultiBoostAB Ensemble (0.958), Random SubSpace Ensemble (0.962), and credal decision tree (AUC = 0.918). The final flood risk map shows 5075 ha (0.63%) in extremely high risk, 47,955 ha (5.95%) in high-risk, 40,460 ha (5.02%) in medium risk, 431,908 ha (53.55%) in low risk areas, and 281,127 ha (34.86%) in very low risk. The present study highlights that the integration of ML models and AHP is a promising framework for mapping flood risks in flood-prone areas.     

Bound and exact methods for assessing link vulnerability in complex networks

Assessing network systems for failures is critical to mitigate the risk and develop proactive responses. In this paper, we investigate devastating consequences of link failures in networks. We propose an exact algorithm and a spectral lower-bound on the minimum number of removed links to incur a significant level of disruption. Our exact solution can identify optimal solutions in both uniform and weighted networks through solving a well-constructed mixed integer program. Also, our spectral lower-bound derives from the Laplacian eigenvalues an estimation on the vulnerability of large networks that are intractable for exact methods. Through experiments on both synthetic and real-world networks, we demonstrate the efficiency of the proposed methods.     

The right to fashion in the age of terrorism

As part of a feminist commitment to collaboration, this article appears as a companion essay to Mimi Thi Nguyen's "The Biopower of Beauty: Humanitarian Imperialisms and Global Feminisms" and offers a point of departure for thinking about fashion and beauty as processes that produce subjects recruited to, and aligned with, the national interests of the United States in the war on terror. The Muslim woman in the veil and her imagined opposite in the fashionably modern - and implicitly Western - woman become convenient metaphors for articulating geopolitical contests of power as a human rights concern, as a rescue mission, as a beautifying mandate. This article examines newer iterations of this opposition, in the wake of September 11, 2001, in order to demonstrate the critical resonance of a biopolitics on fashion and beauty. In "The Right to Fashion in the Age of Terrorism," the author examines the relationship between the U.S. war on terror, targeting persons whose sartorial choices are described as terrorist-looking and oppressive, and the right-to-fashion discourse, which promotes fashion's mass-market diffusion as a civil liberty. Looking at these multiple invocations of the democratization of fashion, this article argues that the right-to-fashion discourse colludes with the war on terror by fabricating a neoliberal consumer-citizen who is also a couture-citizen and whose right to fashion reasserts U.S.exceptionalism, which is secured by private property, social mobility, and individualism.     

Growth,inequality and poverty in Vietnam: How did trade liberalisation help the poor, 2002–2008

Using the Vietnamese Living Standards Surveys for 2002, 2004, 2006 and 2008, we explore how provinces with differential access to trade liberalisation reforms differ in their pro-poor growth performance in Vietnam. Using both non-parametric and parametric estimation, we find strong, robust evidence of pro-poor growth in provinces with greater exposure to trade liberalisation. Using censored and uncensored regressions, the study also shows that increased wages play a critical role in this outcome. Our analysis enables identification of the core mechanisms through which the poor materialise their gains from trade-driven growth in a transition economy.     

Ethnic and gender differences in parental expectations and life stress

This paper presents ethnic and gender differences in reported stressful life events (SLE) in a sample of 70 Southeast Asian (SEA) adolescents. The ranking of five SLEs with the highest percentage reportingSome orA Lot of stress showed differences in qualitative life events among Cambodian, Hmong, and Vietnamese adolescents. Cambodians rankedstrict discipline in social life by parents as most stressful. Hmong and Vietnamese adolescents reporteddoing house chores andacademic pressure to do well, respectively, as most stressful. In other stressor domains, academic performance (i.e.studying for a test, personal pressure to get good grades) and parental expectations (i.e.high expectations from parents to do well, fear of failure to meet family expectations) show similarity across ethnic groups. T-tests show that female adolescents reported higher stress on eight out of 10 life events females than males.Personal pressure to get good grades had the highest percentage mean for females. For males,worrying about where to live or getting a job after graduation were the two most endorsed stressful life events. Important implications for social work practice in schools and with parents in SEA families are discussed. Further research into parental involvement and family distress is also recommended.     

Institutional,Subcultural, and Individual Determinants of Same-Sex Sexual Contact Among College Women

While the collegiate hookup literature identifies the prevalence and conditions under which women engage in same-sex sexual behaviors, less is understood about the macro- and mesolevel features of universities predictive of women’s engagement in these behaviors. How do predictors of same-sex contact differ for women who report engagement in nongenital versus genital sexual acts? Using the Online College Social Life Survey (OCSLS), this study examined 5,069 women from 21 U.S. colleges and universities who reported at least one same-sex encounter in their lifetime to empirically evaluate how same-sex sexual histories are predicted by university structure and membership in student subcultures. Results find subcultural participation to have a regulative effect on what types of sexual behaviors women engaged in with other women. While Greek-affiliated women were significantly more likely to have engaged in solely nongenital sexual behavior, women in team-based athletics were more likely to report a genital sexual history with women. This study’s focus on women’s sexual behaviors as opposed to sexual identity affirms the influence of institutional contexts, subcultural dynamics, and their variability across U.S. campuses in producing the conditions and opportunities for varied forms of sexual interactions among college women.     

Gender patterns in Vietnam’s child mortality

We analyze child mortality in Vietnam focusing on gender aspects. Contrary to several other countries in the region, mortality rates for boys are substantially larger than for girls. The mortality rate of boys appears to be more sensitive to parents’ education levels than the mortality rate of girls. A high education level of the father is particularly protective for boys. The rural–urban mortality difference in the raw data, which is particularly large for boys, can be fully explained by differences in observable characteristics of urban and rural households.     

More than just trees: Assessing reforestation success in tropical developing countries

Rural communities in many parts of the tropics are dependent of forests for their livelihoods and for environmental services. Forest resources in the tropics have declined rapidly over the past century and therefore many developing countries in the tropics have reforestation programs. Although reforestation is a long-term process with long-term benefits, existing evaluations of the success of these programs tends to focus on short-term establishment success indicators. This paper presents a review of reforestation assessment that highlights the need to not only consider short-term establishment success, but also longer-term growth and maturation success, environmental success and socio-economic success. In addition, we argue that reforestation assessment should not be based on success indicators alone, but should incorporate the drivers of success, which encompasses an array of biophysical, socio-economic, institutional and project characteristics. This is needed in order to understand the reasons why reforestation projects succeed or fail and therefore to design more successful projects in future. The paper presents a conceptual model for reforestation success assessment that links key groups of success indicators and drivers. This conceptual model provides the basis for a more comprehensive evaluation of reforestation success and the basis for the development of predictive systems-based assessment models. These models will be needed to better guide reforestation project planning and policy design and therefore assist rural communities in tropical developing countries to alleviate poverty and achieve a better quality of life.     

Population research and education in Vietnam

Population research and education in Vietnam have expanded in their functions since the early 1980s. There are currently 5 departments conducting demographic studies: the National Committee for Population and Family Planning within the Ministry of Health, the Ministry of Education, and the Institute of Pedagogical Sciences, the Ministry of Labor Fore, the Vietnam Women's Union, and the Youth Union. An overview is provided of each department and its research and educational activities as well as the General Statistics Office (GSO) and the Institute of Sociology. GSO provides statistics on population annually from a variety of sources including the decennial census. The last census was conducted in 1989 and is useful for understanding general demographic trends. Vital rate data are considered too low. The Institute of Sociology uses the sample survey and focus groups to examine social and economic conditions and their effects on norms and values about reproduction. The Institute conducted a knowledge, attitudes, and prevalence (KAP) survey in 1984. Studies have focused on the commune level and the role of government in population regulation. Findings have supported a position that the goal of a 2-child family is not attainable without social and economic change as well as family planning. Migration studies have also been undertaken with the Ministry of Labor. The National Committee for Population and Family Planning is concerned with studies on the biotechnology of contraceptive methods and abortion. A study in 1987 examined health workers attitudes toward and knowledge of a variety of contraceptive methods. In 1988 the Demographic and Health Survey was conducted and data were comparable internationally. Studies have been helpful in designing training programs and in informing decision makers. Forecast data in 1990 were useful in setting targets for the coming decade. The Ministry of Education targets the general public and students. Materials aim to create positive attitudes to family planning and to inform about general population issues. Special groups such as the Women's Union have conducted KAP studies and the Center for Women's Studies has focused on the problems of women in development.