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Toward sustainable intensification of agriculture in sub-Saharan Africa

Andreas BUERKERT, Eva SCHLECHT

Frontiers of Agricultural Science and Engineering 2020, Volume 7, Issue 4, Pages 401-405 doi: 10.15302/J-FASE-2020341

Abstract:

Across the African continent efforts to intensify agriculture have been limited to specific commodities, locations or particular production schemes. The causes for the widespread failure to overcome low land and labor productivity while maintaining ecosystem services have often be analyzed but remain poorly understood. A social-ecological system approach may help to better understand the complex nature of ecological disadvantages, postcolonial structures, limited connect between producers and consumer markets, low off-farm livelihood opportunities, partial underpopulation and lacking experience with the concept of sustainable production as a major impediment for sustainable intensification of the agricultural sector. Nevertheless, recent success stories in agro-pastoral systems as well as urban vegetable and animal production and associated value chains in West Africa, and in intensive mixed-cropping systems of the Great Lakes Region show the potential of stakeholder-driven agricultural intensification. Proper interpretation of these cases may provide lessons for a more widespread eco-intensification of smallholder agriculture in sub-Saharan Africa.

Keywords： colonial heritage land use marketing property rights subsistence agriculture urbanization value chains

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Conservation and adaptive reuse of industrial heritage in Shanghai

ZHANG Song

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 4, Pages 481-490 doi: 10.1007/s11709-007-0065-4

Abstract: This paper takes a retrospective review of the evolution of the conservation of industrial heritage inurban Shanghai since the 1990s within the context of the international industrial heritage conservation

Keywords： evolution industrial international industrial retrospective Shanghai

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Creating technical heritage object replicas in a virtual environment

Olga EGOROVA,Dmitry SHCHERBININ

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 1, Pages 108-115 doi: 10.1007/s11465-016-0363-4

Abstract:

The paper presents innovative informatics methods for creating virtual technical heritage replicas

Keywords： 3D document history of science and technology technical knowledge popularization virtual environment replica mechanism and machine science (MMS)

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Comparative Analysis on World Natural Heritage Value of South China Karst

Xiong Kangning,Xiao Shizhen,Liu Ziqi,Chen Pindong

Strategic Study of CAE 2008, Volume 10, Issue 4, Pages 17-28

Abstract: analysis on the three sites with worldwide similar karst areas under the eighth criterion of world heritageAs a result, south China karst (Phase 1) world heritage sites represent a long-term, multi-phased evolution

Keywords： world heritage comparative analysis south China karst

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Research Status and Future Development of Deep Space Security

Wu Ke, Zhang Zhe, Yang Wenfei, He Jianfeng, Zhang Tianzhu, Jian Kangkang, Wu Weiren

Strategic Study of CAE 2022, Volume 24, Issue 4, Pages 240-248 doi: 10.15302/J-SSCAE-2022.04.023

Abstract: Space heritage protection is controversial in terms of evaluation and protection measures owing to political, space heritage is divided into human cultural heritage and natural heritage, among which cultural heritage, and many treaties on space heritage have not yet reached an international consensus.Therefore, there is a need to conduct research on strategies for the protection of space heritage.The evaluation and protection of space heritage remains highly controversial.

Keywords： deep space security space radiation threat planetary protection space heritage protection space legislation

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Marble epistyles under shear: an experimental study of the role of “Relieving Space”

E. D. PASIOU, I. STAVRAKAS, D. TRIANTIS, S. K. KOURKOULIS

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4, Pages 767-786 doi: 10.1007/s11709-019-0515-9

Abstract: The mechanical response of mutually interconnected epistyles is studied experimentally. The specimens are made of two marble blocks connected to each other with an “I”-shaped titanium connector placed in grooves sculptured on the blocks and covered with cementitious material. The specific way of connecting epistyles simulates the one used by scientists restoring the ancient “connections” of the epistyles of the Parthenon Temple. This “connection,” although designed to sustain mainly tensile loading, undertakes, also, shear load, in case of excitations imposing to the epistyles displacements normal to the connector’s axis. Attention is focused to enlighten the role of a novel design technique aiming to relieve the stress field around the connector. According to this technique, part of the connector’s web is left uncovered, forming the so-called “ ,” assisting the unconstrained deformation of the connector. Both traditional and innovative sensing techniques were employed in an effort to obtain data from the interior of the three-material-complex (marble-cementitious material-titanium). Analysis of the data indicated that the “Relieving Space” reduces the overall stiffness of the system, protecting marble in case of over-loading. Moreover, it was concluded that the innovative techniques employed provide pre-failure indicators well in advance of the catastrophic failure of the specimens.

Keywords： monuments of cultural heritage marble epistyles pressure stimulated currents acoustic emission digital

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Potential Measurement and Mode Selection of Tourism Development at Mining Sites of Coal Resource-Based Cities in China

Wang Qiuju, Zhou Jiali, Peng Suping

Strategic Study of CAE 2020, Volume 22, Issue 6, Pages 158-166 doi: 10.15302/J-SSCAE-2020.06.021

Abstract:

Tourism development is one of the important channels to realize the economic transformation of closed coal mines. The suitability and modes of tourism development at mining sites of coal resource-based cities are determined by their tourism development potentials. How to measure the tourism development potentials of mine sites and identify their development types has become an urgent research topic in the field of tourism development. In this study, we established a model to measure the tourism development potentials of mine sites from three aspects: mine tourism resources, mine development conditions, and urban development environment; we also completed the empirical research on the tourism development potentials of mine sites in China’s coal resourcebased cities. The results show that mine sites in coal resource-based cities have distinctive tourism development potentials and the top ten cities with the most comprehensive potentials are: Xuzhou, Handan, Zaozhuang, Xingtai, Jiaozuo, Zhangjiakou, Datong, Huainan, Pingdingshan, and Fushun. The spatial pattern of development potentials presents the clustering feature as “two core regions and three centers.” Therefore, the coal resource-based cities should choose their development modes according to their different resource values, development potentials, and spatial patterns. Tourism development plans of mine sites shall be timely formulated and a new mechanism that is guided by government and cooperated by multiple parties should be established for the mine site tourism development, thus to develop the tourism functions of mine sites.

Keywords： coal resource-based city industrial heritage tourism development potential measurement development