The discourse of disaster management has undergone significant change in recent years, shifting from relief and response to disaster risk reduction (DRR) and community-based management. Organisations and vulnerable countries engaged in DRR have moved from a reactive, top-down mode to proactive, community-focused disaster management. In this article, we focus on how national disaster management policy initiatives in Bangladesh are implementing community-based approaches at the local level and developing cross-scale partnerships to reduce disaster risk and vulnerability, thus enhancing community resilience to disasters. We relied chiefly on secondary data, employing content analysis for reviewing documents, which were supplemented by primary data from two coastal communities in Kalapara Upazila in Patuakhali District. Our findings revealed that to address the country’s vulnerabilities to natural disasters, the Government of Bangladesh has developed and implemented numerous national measures and policies over the years with the aim of strengthening community-focused risk reduction, decentralising disaster management, developing cross-scale partnerships and enhancing community resilience. Communities are working together to achieve an all-hazard management goal, accepting ownership to reduce vulnerability and actively participating in risk-reduction strategies at multiple levels. Community-based disaster preparedness activities are playing a critical role in developing their adaptive capacity and resilience to disasters. Further policy and research are required for a closer examination of the dynamics of community-based disaster management, the role of local-level institutions and community organisations in partnerships and resilience building for successful disaster management.

This paper proposes a hexagonal photonic crystal fiber (H-PCF) structure with high relative sensitivity for liquid sensing; in which both core and cladding are microstructures. Numerical investigation is carried out by employing the full vectorial finite element method (FEM). The analysis has been done in four stages of the proposed structure. The investigation shows that the proposed structure achieves higher relative sensitivity by increasing the diameter of the innermost ring air holes in the cladding. Moreover, placing a single channel instead of using a group of tiny channels increases the relative sensitivity effectively. Investigating the effects of different parameters, the optimized structure shows significantly higher relative sensitivity with a low confinement loss.

The aim of the study is to explore the gender issues in disaster and to understand the relationships between vulnerability, preparedness and capacity following a qualitative method on the basis of secondary sources. The study notes that the women living in coastal areas are facing more difficulties due to the complexity of atmosphere where their activities are not properly recognized in disaster planning and management. However, the study showed that women, particularly belong to the poor families are primarily responsible for their domestic roles due to culturally dominated labour division. The study also recommended that women should be involved in emergency planning and disaster management process through ensuring their active participation. The inclusion of greater number of women in the emergency management profession could help in the long term to address disaster risks. Since, the underlying cultural, social, and economic patterns that lead to a low socioeconomic status of women and thereby generate their specific vulnerability to disasters. Though, such initiatives have not addressed like their entire adverse impact on socioeconomic status in recent literature, the present study is an initiative to address the women's involvement in preparedness and capacity building at the community level as well as household level which the vulnerable women are striving with the frequent disasters to sustain in the planet.

Despite widespread recognition that social learning can potentially contribute toward enhancing community resilience to climateinduced disaster shocks, studies on this process remain few and far between. This study investigates the role of local institutions (formal, informal, and quasi-formal) in creating learning arenas and translating social learning into collective action in flash floodprone Sunamganj communities in Bangladesh. We follow a Case Study approach using qualitative research methods. Primary data were collected through 24 key informant interviews, 10 semistructured interviews, six focus-group discussions, and two participant observations events. Our results reveal that the diversity and flexibility of local-level institutions creates multiple learning platforms in which social interaction, problem formulation, nurturing diverse perspectives, and generating innovative knowledge for collective action can take place. Within these formal and informal learning arenas, communities' desire and willingness to be self-reliant and to reduce their dependency on external funding and assistance is clearly evident. Social learning thus paves the way for institutional collaboration, partnership, and multi-stakeholder engagement, which facilitates social learning-based collective action. Nurturing institutional diversity and flexibility at the local level is therefore recommended for transforming social learning into active problem-solving measures and to enhance community resilience to disaster shocks.