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[en] The rapid development of online ride-hailing sharing economic platform provided an efficient way to mitigate the carbon emission of modern traffic in China. However, its development was blocked by the social management system whose update is relatively slow. How to resolve the conflict between the new economic paradigm development under the technology empowerment and the old public administration system and effectively solve the new economic and social problems it brought by are the major challenges for the healthy and sustainable development of this type of sharing economy. To shed light on the solutions to such conflict, the present paper conducts a case study on China’s largest online ride-hailing platform ‘Didi Chuxing’. The results indicate that the separation of ownership and use rights following the sharing economy brings a new approach to the efficient use of resources. The development of Didi displays a bottom-up policy innovation and institutional change. The path choice of enterprise development will affect its acquisition of legitimacy to a great extent. In this mobile Internet era, the public plays a critical role in shaping the new policy.
[en] Various types of Sealed Radioactive Sources (SRS) are widely used in industry, medicine and for research worldwide. They provide an essential tool to nuclear applications in the areas of health, food and water processing. They also contribute to achieving the sustainable development goals in industry, agriculture and natural resources utilization. Along with alternative technologies, the number of SRS in use is increasing and SRS are used in almost all member states. The activity of the sources varies from kilobecquerels in consumer products to terabecquerels used in teletherapy devices and to hundreds of petabecquerels used in facilities for sterilization, food irradiation and in radioactive thermal generators. The objective of the paper is to provide a good description of various applications, type of sources used, the nature of these sources, their number and distribution in various regions as well as the trend expected for the coming years - including the impact of alternative nuclear technologies. The paper is intended to provide a range of information on the subject but is not intended to cover possible solutions and management strategies. This latter task is the subject for many other IAEA activities and guidance documents. The paper is intended to provide insights and to enhance awareness on the source applications and the level of magnitude of their use. The main thrust of the paper is to introduce an approach to estimate the world source inventory based on a systematic and credible approach. Data from a selective range of member states would be used along with various variables to estimate national and regional inventories according to the category of the sources as categorized by the IAEA
[en] A study on the nutritional characteristics of Indigofera spinosa and Duosperma eremophilum dwarf shrubs was carried out in Southwest Marsabit district of Kenya to establish the digestibility intake by goats and their chemical composition for management purposes. The value of Leucaena leucocephala seeds as protein supplement for goats was also tested where three levels, 0 (control), 50 and 100 g/goat/day were used. Intake and digestibility of the shrubs were assessed by difference and conventional methods respectively. Proximate analysis and Van Soest fibre analysis were done for chemical composition. Goats on l. spinosa had 330+ or -34. 5 g/day Dry Matter Intake (DMI) while those on D. eremophilum had 175+or-89.0 g/day. Dry Matter of l. spinosa was 40.3+or-2.9 % digestible while that of D. eremophilum was 45.0+or-6.6 % digestible. Indigofera spinosa contained 8.8 % Crude Protein (CP), 55.4 % Neutral Detergent Fibre (NDF) and 4.1 KCal/gDM energy compared to 7.6 % CP, 29.3 % Neutral Detergent Fibre (NDP) and 3.1 KCal/gDM energy for D. eremophililum. In reference to the controls, DMI increased by 124g and 55g for D. eremophilum and I. spinosa respectively for every 50g increase in L. lecocephala seeds for l. spinosa. From the results it was concluded that in terms of intake, digestibility and CP, both shrubs are medium quality. Leucaena leucocephala seeds are rich in CP (26.0%) and increased both DMI and DMD for the shrubs. It is thus suitable for use as protein supplement in small ruminant feeding especially during the dry season when it will increase intake and digestibility of the shrubs
[en] The paper, based on a report published by the OECD in 2007 on the management of recyclable fissile and fertile materials, covers various aspects of the storage, processing, re-use and/or eventual disposal of reprocessed uranium. The information provided by contributors to the study gives an overview of the amount of reprocessed uranium accumulated so far in stockpiles. Future arisings of reprocessed uranium are evaluated taking into account the expected evolutions of nuclear electricity generation and reprocessing capabilities. The alternative options available for the management of reprocessed uranium are described briefly and their respective advantages and drawbacks are reviewed. Concluding remarks focus on the challenges and opportunities offered by various options for the management of reprocessed uranium in a sustainable development perspective. (author)