AREA MANEGEMENT IN THE CORE AREA OF CITIES

Nowadays, Underground space exploitation is one of the directions of the main focus in the construction of Hangzhou. This paper comprehensively introduces the schematic design of the underground space exploitation of Hangzhou east station, combined with the underground space development project of the core area in Hangzhou eastern new city zone. Firstly, the background of the surrounding area is discussed to illuminate the important status of the core area of eastern new city zone in Hangzhou’s future construction. Then, the holistic design concept and construction goal of the underground space exploitation of the core area are presented, and its functions and layout are clarified focusing on the railway construction and circumjacent exploitation project of Hangzhou east station. Lastly, the executive plan about the underground space exploitation of the core area of Hangzhou eastern new city zone is expatiated comprehensively.

Download Full-text

Reactor Pressure Vessel Integrity Assessment: French Simplified Analysis Method Applied to Underclad Postulated Defect in Nozzle

Volume 7: Operations, Applications and Components ◽

10.1115/pvp2016-63564 ◽

2016 ◽

Author(s):

Adolfo Arrieta-Ruiz ◽

Eric Meister ◽

Stéphane Vidard

Keyword(s):

Fracture Mechanics ◽

Fracture Risk ◽

Pressure Vessel ◽

Reactor Pressure Vessel ◽

Core Area ◽

Integrity Assessment ◽

Elastic Plastic ◽

The Core ◽

Simplified Method ◽

Reactor Pressure

Structural integrity of the Reactor Pressure Vessel (RPV) is one of the main concerns regarding safety and lifetime of Nuclear Power Plants (NPP) since this component is considered as not reasonably replaceable. Fast fracture risk is the main potential damage considered in the integrity assessment of RPV. In France, deterministic integrity assessment for RPV vis-à-vis the brittle fracture risk is based on the crack initiation stage. As regards the core area in particular, the stability of an under-clad postulated flaw is currently evaluated under a Pressurized Thermal Shock (PTS) through a dedicated fracture mechanics simplified method called “beta method”. However, flaw stability analyses are also carried-out in several other areas of the RPV. Thence-forward performing uniform simplified inservice analyses of flaw stability is a major concern for EDF. In this context, 3D finite element elastic-plastic calculations with flaw modelling in the nozzle have been carried out recently and the corresponding results have been compared to those provided by the beta method, codified in the French RSE-M code for under-clad defects in the core area, in the most severe events. The purpose of this work is to validate the employment of the core area fracture mechanics simplified method as a conservative approach for the under-clad postulated flaw stability assessment in the complex geometry of the nozzle. This paper presents both simplified and 3D modelling flaw stability evaluation methods and the corresponding results obtained by running a PTS event. It shows that the employment of the “beta method” provides conservative results in comparison to those produced by elastic-plastic calculations for the cases here studied.

Download Full-text

Core area and centre of activity of maned wolves, Chrysocyon brachyurus (Illiger) (Mammalia, Canidae), submitted to supplemental feeding

Revista Brasileira de Zoologia ◽

10.1590/s0101-81752004000200038 ◽

2004 ◽

Vol 21 (2) ◽

pp. 391-395 ◽

Cited By ~ 8

Author(s):

Joaquim de Araújo Silva ◽

Sônia Aparecida Talamoni

Keyword(s):

Kernel Method ◽

Artificial Feeding ◽

Core Area ◽

Frequency Of Occurrence ◽

Supplemental Feeding ◽

M Cell ◽

The Core ◽

Natural Reserve ◽

Fixed Kernel ◽

Chrysocyon Brachyurus

Based on the finding of remains (tracks, scats, and hairs), an analysis was made of the core area and centre of activity of maned wolves, Chrysocyon brachyurus (Illiger, 1815), living in a private natural reserve in which ecotourism activities are developed and these animals are daily fed bovine meat. A total of 465 samples of remains were recorded. Using the fixed kernel method, the area encompassing all samples recorded was estimated at 25.7 km², yet 50% of all samples were found in an area of only 1.5 km², representing 5.8% of the total area covered. For estimating the core area of the animals, the frequency of occurrence of the samples was determined by superimposing a 50 x 50 m cell grid over a map of the area encompassing all recorded occurrences. Based on the cells containing more than six occurrences, the animals' core area was 0.99 km², which included the place where the animals are fed. The centre of activity was located only 0.50 km from this place. The high negative correlation (r = -0.93, p < 0.05) between the densities of the recorded occurrences and the distances from these to the sanctuary indicates that the core area and centre of activity are conditioned by artificial feeding.

Download Full-text

Observations on the Southern Cerrados and their Relationship with the Core Area

Neotropical Savannas and Seasonally Dry Forests - Systematics Association Special Volumes ◽

10.1201/9781420004496.ch3 ◽

2006 ◽

pp. 67-77 ◽

Cited By ~ 9

Author(s):

Giselda Durigan

Keyword(s):

Core Area ◽

The Core

Download Full-text

Lesion Distribution and Epidemiology ofMycobacterium bovisin Elk and White-Tailed Deer in South-Western Manitoba, Canada

Veterinary Medicine International ◽

10.4061/2011/591980 ◽

2011 ◽

Vol 2011 ◽

pp. 1-11 ◽

Cited By ~ 18

Author(s):

Todd K. Shury ◽

Doug Bergeson

Keyword(s):

Mycobacterium Bovis ◽

Geographic Distribution ◽

Cervus Elaphus ◽

Red Deer ◽

Core Area ◽

Age Classes ◽

Small Core ◽

The Core ◽

Free Ranging ◽

Culture Positive

Surveillance forMycobacterium bovisin free-ranging elk (Cervus elaphus) and white-tailed deer (Odocoileus virginianus) from south-western Manitoba was carried out from 1997 to 2010 to describe the lesions, epidemiology, and geographic distribution of disease. Tissues were cultured from animals killed by hunters, culled for management, blood-tested, or found opportunistically. Period prevalence in elk was approximately six times higher than deer, suggesting a significant reservoir role for elk, but that infected deer may also be involved. Prevalence was consistently higher in elk compared to deer in a small core area and prevalence declines since 2003 are likely due to a combination of management factors instituted during that time. Older age classes and animals sampled from the core area were at significantly higher risk of being culture positive. Positive elk and deer were more likely to be found through blood testing, opportunistic surveillance, and culling compared to hunting. No non-lesioned, culture-positive elk were detected in this study compared to previous studies in red deer.

Download Full-text

Creating continuous areas of old forest in long-term forest planning

Canadian Journal of Forest Research ◽

10.1139/x00-103 ◽

2000 ◽

Vol 30 (11) ◽

pp. 1817-1823 ◽

Cited By ~ 50

Author(s):

Karin Öhman

Keyword(s):

Net Present Value ◽

Problem Formulation ◽

Core Area ◽

Northern Sweden ◽

Present Value ◽

The Core ◽

Long Range Planning ◽

The Cost

Harvest activities tend often to create landscapes where the old forest is fragmented into isolated patches that provide marginal conditions for species that inhabit forest interiors. This paper presents a long-range planning model designed to maximize the net present value and to create continuous patches of old forest. In this model, the spatial structure of old forest is controlled by core area and edge habitats. Core area is defined as the area of old forest that is free of edge effects from surrounding habitats. The core area requirement is set to a fixed value for each of a number of time periods, whereas the area of edge habitats, which should be as small as possible, is weighted against the net present value. The model is applied in a case study to an actual landscape consisting of 755 stands of forest in northern Sweden and solved using simulated annealing. The results show that distinct continuous patches of old forest are created when both a core area requirement and consideration of the amount of edge habitats are included in the problem formulation. The cost of creating continuous areas of old forest was found to be significant.

Download Full-text

ASIC Implementation of a Nonlinear Dynamical Model for Hippocampal Prosthesis

Neural Computation ◽

10.1162/neco_a_01107 ◽

2018 ◽

Vol 30 (9) ◽

pp. 2472-2499 ◽

Cited By ~ 2

Author(s):

Zhitong Qiao ◽

Yan Han ◽

Xiaoxia Han ◽

Han Xu ◽

Will X. Y. Li ◽

...

Keyword(s):

Low Power ◽

Integrated Circuit ◽

Large Scale ◽

Random Number Generator ◽

Core Area ◽

Dynamical Model ◽

Volterra Model ◽

Nonlinear Dynamical ◽

The Core ◽

Nonlinear Dynamical Model

A hippocampal prosthesis is a very large scale integration (VLSI) biochip that needs to be implanted in the biological brain to solve a cognitive dysfunction. In this letter, we propose a novel low-complexity, small-area, and low-power programmable hippocampal neural network application-specific integrated circuit (ASIC) for a hippocampal prosthesis. It is based on the nonlinear dynamical model of the hippocampus: namely multi-input, multi-output (MIMO)–generalized Laguerre-Volterra model (GLVM). It can realize the real-time prediction of hippocampal neural activity. New hardware architecture, a storage space configuration scheme, low-power convolution, and gaussian random number generator modules are proposed. The ASIC is fabricated in 40 nm technology with a core area of 0.122 mm[Formula: see text] and test power of 84.4 [Formula: see text]W. Compared with the design based on the traditional architecture, experimental results show that the core area of the chip is reduced by 84.94% and the core power is reduced by 24.30%.

Download Full-text