Search for gravitational waves associated with gamma-ray bursts detected by Fermi and Swift during the LIGO–Virgo run O3b

We search for gravitational-wave signals associated with gamma-ray bursts (GRBs) detected by the Fermi and Swift satellites during the second half of the third observing run of Advanced LIGO and Advanced Virgo (2019 November 1 15:00 UTC–2020 March 27 17:00 UTC). We conduct two independent searches: a generic gravitational-wave transients search to analyze 86 GRBs and an analysis to target binary mergers with at least one neutron star as short GRB progenitors for 17 events. We find no significant evidence for gravitational-wave signals associated with any of these GRBs. A weighted binomial test of the combined results finds no evidence for subthreshold gravitational-wave signals associated with this GRB ensemble either. We use several source types and signal morphologies during the searches, resulting in lower bounds on the estimated distance to each GRB. Finally, we constrain the population of low-luminosity short GRBs using results from the first to the third observing runs of Advanced LIGO and Advanced Virgo. The resulting population is in accordance with the local binary neutron star merger rate

Disasters, deaths and the Sendai Framework’s target one: A case of systems failure in Hiroshima Landslide 2014, Japan

PurposeThe purpose of this paper is to theoretically propose a complex perspective as the third way to understand disasters which is used to describe the Hiroshima landslide disaster 2014 in Japan. In the first half of the paper the complex perspective is explained in detail with comparison to two conventional perspectives on disasters, i.e. hazard approach and vulnerability approach. According to the complex perspective, deaths in disasters are avoidable. In the second half of the paper, Hiroshima landslide disaster is analyzed in line with the complex perspective. Also, how will Hiroshima not repeat such landslide disaster is suggested.Design/methodology/approachTo develop the case study for Hiroshima, a desk-based literature review, a field site visit and five key informant interviews were conducted by the authors in 2016. The authors’ initial analysis based on newspaper reports indicated a failure in the early warning system, evacuation and severity of the hazard. Based on this, the broader literature on traditional perspectives on risk, vulnerability and complexity were mined to understand and theorize the failure in Hiroshima. Then the interviews were conducted in the city of Hiroshima to analyze the disaster from complex perspective.FindingsThe authors demonstrated that the Hiroshima Landslide disaster 2014 and its deaths could be explained by complex perspective. Complex perspective brings us the following suggestions not to repeat landslide disaster in Hiroshima. Political leaders at national and local levels must take up responsibilities to set a “goal” for the disaster management system to “reduce deaths.” Also, governmental and non-governmental organizations should make efforts to engage proactively with community through disaster education or through community awareness program to shift the mind set from hito-goto to jibun-no-koto (their story to our story).Originality/valueReducing deaths by disasters is essential for the world thus it is UN’s Sendai Goal One. As most contemporary sciences are based on reductionism, disasters have been described as a combination of the related components such as hazards, vulnerability. Although the great contributions from the reductionism to disaster studies, it has been said that integrated disaster management is needed since the reductionism usually give the partially optimized solution to disaster reduction. This study proposes complex approach to find comparatively total optimized solution to disaster reduction, in particular reducing deaths. Although it is based on merely one case study, this paper describes the possibility of different way to reduce deaths by disasters.</div

Sendai Framework’s Global Targets A and B: Opinions from the Global Platform for Disaster Risk Reduction’s Ignite Stage 2019

The Sendai Framework for Disaster Risk Reduction 2015−2030 set seven global targets of which the first two targets are to reduce disaster deaths (target A) and diminish the number of affected people globally (target B) by 2030. To realize these targets, the United Nations General Assembly’s Expert Working Group provided indicators to measure progress as well as terminologies for these targets in 2017. Research around these targets is nascent. This article contributes to the understanding of the targets by exploring: (1) what are the conditions that may hinder achieving targets, as well as those that may accelerate their achievement at the national and local levels; and (2) which types of organizations should lead a country’s effort to reduce disaster deaths? These questions were answered by opinion survey research carried out at the Sixth Session of the Global Platform for Disaster Risk Reduction. The participants identified disaster risk reduction efforts, early warning systems, awareness, finance and investment (among others) as the important facilitating factors to achieve targets A and B. Minimal investment in human security, lack of response and coordination, uncertainty of climate change, poor information, lack of campaigns and low budget allocation (among others) are considered as the important hindering factors for these targets by the participants. The findings also suggest that the facilitating and hindering variables of targets A and B are interconnected with global target E (disaster risk governance and capacity building). The majority of the participants thought that it is the national government who should lead in a country’s effort to reduce disaster deaths. Based on these findings, a few recommendations have been made to improve policy and practice related to the indicators as well as to reimagine theories so that targets A and B can be realized in alignment with target E at the national and local levels by 2030

Uptake of climate-smart agriculture through a gendered intersectionality lens: Experiences from Western Kenya

This study conducted in western Kenya demonstrates how a gendered intersectionality lens can be used to explore how and the extent to which farming communities are coping with climate change. Results from a quantitative survey undertaken with 51 farmers and from 4 focused group discussions held with 33 farmers (19 males and 14 females) indicate that 85% of the respondents are willing to adopt climate-smart agriculture (CSA) interventions if constraining factors are resolved.This study reveals that farmers, regardless of whether they are male or female, are willing to adopt climate smart technologies and practices. However, factors such as ethnicity, education, age and marital status determine the levels of uptake of CSA technologies and practices. Looking at crops for instance, we find a high uptake (62.7%) of improved high yielding varieties (HYVs) amongst farmers with primary level education, meaning literacy levels influence adoption of practices. Analysis using age as a lens reveals that there is a high uptake among the youth and adults. Interestingly, the study site comprises of both the Luo and Kalenjin ethnic communities and even though they neighbor each other, we find a high rate of uptake among the Luo community due to existing social and cultural norms and practices related to farming. In conclusion, using a gendered intersectionality lens strengthens the argument for targeted interventions which focus on local needs and priorities while recognizing local contexts as informed by social, cultural and economic factor