Uncertainty analysis and evaluation of ecological risks for urban geohazards: a case study on Gaoleshan Town, Xianfeng County in Mountainous Regions of Western Hubei, China

2021 ◽  
Vol 14 (12) ◽  
Author(s):  
Zhizhong Liu ◽  
Zhipeng Lian ◽  
Lei Liu ◽  
Yong Xu ◽  
Runqing Ye ◽  
...  
Keyword(s):  
Uncertainty Analysis ◽  
Ecological Risks ◽  
Analysis And Evaluation ◽  
Mountainous Regions ◽  
Western Hubei

scholarly journals Operations Scheduling of Sugarcane Production Using Classical GERT Method (Part I: Land Preparation, Planting and Preserve Operations)

2015 ◽  
Vol 3 (2) ◽  
pp. 71
Author(s):  
Nasim Monjezi ◽  
Mohammad Javad Sheikhdavoodi ◽  
Hasan Zakidizaji ◽  
Afshin Marzban ◽  
Mahmood Shomeili
Keyword(s):  
Environmental Conservation ◽  
Agricultural Systems ◽  
Sugarcane Production ◽  
Khuzestan Province ◽  
Land Preparation ◽  
Analysis And Evaluation ◽  
Project Completion ◽  
Operations Scheduling ◽  
Gert Networks

Analysis and evaluation of agricultural systems use these criteria: energy, economic, agronomy, environmental conservation and time. Because of time importance indicator for reducing timeliness cost, project scheduling techniques are used. Graphical Evaluation and Review Technique (GERT) is widely used as a tool for managing projects. In this research GERT Networks were used and operations scheduling of sugarcane production (land preparation, planting and preserve operations) in Khuzestan province of Iran as a case study was analysed, by using WinQsb software. Critical activities, events and path were determined. The earliest project completion time is 214.03 days. The results show a high potential for operations scheduling of sugarcane production.

scholarly journals Depositional Architecture and Facies of a Complete Reef Complex Succession: A Case Study of the Permian Jiantianba Reefs, Western Hubei, South China

Minerals ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 533
Author(s):  
Beichen Chen ◽  
Xinong Xie ◽  
Ihsan Al-Aasm ◽  
Wu Feng ◽  
Mo Zhou
Keyword(s):  
Upper Permian ◽  
Field Observations ◽  
Comprehensive Description ◽  
Reef Facies ◽  
Reef Complex ◽  
Sedimentary Succession ◽  
Western Hubei ◽  
Depositional Architecture ◽  
Marginal Reef

The Upper Permian Changhsingian Jiantissanba reef complex is a well-known platform marginal reef, located in the western Hubei Province, China. Based on field observations and lithological analysis of the entire exposed reef complex, 12 reef facies have been distinguished according to their sedimentary components and growth fabrics. Each of the lithofacies is associated with a specific marine environment. Vertically traceable stratal patterns reveal 4 types of the lithologic associations of the Jiantianba reef: (1) heterozoan reef core association: developed in the deep marginal platform with muddy composition; (2) photozoan reef core association developed within the photic zone; (3) tide-controlled reef crest association with tidal-dominated characteristic of lithofacies in the shallow water; and (4) reef-bank association dominated by bioclastic components. The entire reef complex shows a complete reef succession revealing a function of the wave-resistant and morphological units. This study displays a complete sedimentary succession of Jiantianba reef, which provides a more accurate and comprehensive description of the reef lithofacies and a better understanding of the structure and composition of organic reefs.

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