ACMECS Bioenergy 2015. Three Years of Effort Towards a Regional Bioenergy Network

Global change, including climate change, societal dynamics, economic challenges, environmental protection and the need to improve livelihoods and to reduce poverty have led to a situation where national solutions must be embedded in regional strategies. The ACMECS countries Lao PDR, Cambodia, Myanmar, Thailand and Vietnam have a long tradition in collaboration across borders. Despite the cultural heterogeneity and different status of development, it can be a great advantage to address global challenges together. Biomass is seen as a promising resource for energy and industrial raw materials, but the challenge is that biomass production requires land and increased production can cause conflicts and environmental degradation. The increased demand for biomass in the recent years, coupled with the fact that the balance between domestic, regional and foreign demand for biomass is changing, requires careful attention. As a consequence of these developments, the Kasetsart Agricultural and Agro-Industrial Product Improvement Institute (KAPI) of the Kasetsart University, Thailand initiated a process to establish a regional bioenergy network. International experts, including members of the IUFRO Task Force "Sustainable Forest Biomass Network (SFBN)", have acknowledged the significant progress made over the last few years. This report is jointly published with the IUFRO Occasional Paper series, Vol. 31 (http://www.iufro.org/publications/series/occasional-papers/article/2016/04/20/occasional-paper-31-acmecs-bioenergy-2015-three-years-of-efforts-towards-a-regional-bioenergy-n/

Incremental Horizontal Fragmentation: A new Approach in the Design of Distributed Object Oriented Databases

Distributed relational or more recently object-oriented databases usually employ data fragmentation techniques during the design phase in order to split and allocate the database entities across the nodes of the system. Most of the design algorithms are usually static and do not take into account the system evolution: data updates and addition of new applications. As this is an important issue in modern databases, we propose in this paper an incremental method for dynamically re-fragmenting an existing database as it evolves over time. We prove that by incrementally changing the database schema and allocation over time we improve database availability. This is a direct result of the reduced amount of time needed for incremental fragmentation as compared to a full fragmentation

Farmers’ perceptions and matching climate records jointly explain adaptation responses in four communities around Lake Tana, Ethiopia

Farmers’ climate perceptions are responsible for shaping their adaptive responses and are thus essential to consider for the design of strategies to reduce vulnerability and increase resilience. In this study, we collected social data in four communities in the central Ethiopian Highlands on farmers’ climate perceptions and adaptations using group discussions and PRA tools. We related these to climate data spanning 30 years (1981 to 2010), consisting of daily minimum temperature, maximum temperature and precipitation, modelled for the four communities using global databases and regional meteorological data. We found that farmers’ climate perceptions showed considerable spatial and gender differences. Perceptions matched well with records describing climate variability, particularly in terms of the shortening and the increased variability of the rainy season, as well as the occurrence of extreme drought in recent years. Climate change, described by long-term average increases in temperature and decreases in precipitation, was perceived, but with subordinate priority. Perceived climate impacts included reduced crop yield, increased occurrence of pests and diseases and increased crop damage by extreme events and poverty. Adaptations were mainly land based and included agronomic measures, land management and ecosystem restoration. Furthermore, important gender differences in adaptation could be traced back to typical gender roles. Results highlight the risk of broadcast adaptation programs, such as the government-propagated combination of mineral fertilizers and early maturing crop varieties. Most importantly, they point to the need to consider climate variability, site- and gender-specific perceptions and priorities