scholarly journals Research on the Spatial Structure of County Greenway Network Based on Gravitation-Resistance Measurement—A Case Study of Ning’an in China

2020 ◽  
Vol 12 (4) ◽  
pp. 1352
Author(s):  
Xue Jiang ◽  
Tianyu Zhao
Keyword(s):  
Network Flow ◽  
Economic Value ◽  
Flow Analysis ◽  
Ecological Value ◽  
Ecological Processes ◽  
Ecological Protection ◽  
Resistance Model ◽  
Distribution Of Resources ◽  
New Perspective ◽  
Leisure And Recreation

The ecological value, cultural value, economic value and industrial value of the county space, where a variety of human activities and natural ecological processes are carried out, act as the key elements considered in county spatial planning. However, there is a lack of carrying space for integrating these values in the actual Chinese county construction. In this article, the construction of a county greenway network is based on multiple needs, such as ecological protection, characteristic landscape, leisure and recreation. The ecological, cultural and economic values of resources are taken as the basis of identifying a greenway network. We establish the gravitation-resistance model to measure network flow based on the attraction and resistance between resources. In particular, by means of network flow analysis and the geographic information system (GIS), the resistance and gravity are assigned to the resources and landscapes, respectively. The attraction between elements is then measured using the gravitation-resistance model. The distribution of resources and the trend of integration are analyzed by the combination of the centrality of resources and the ratio of supply to demand. Based on the analysis results of network flow, the paper puts forward a strategy for developing a county greenway network, and improves the scientific evaluation of the spatial resource. It provides a new perspective for the construction of a county greenway network.

scholarly journals Traffic Inequality and Relations in Maritime Silk Road: A Network Flow Analysis

2021 ◽  
Vol 10 (1) ◽  
pp. 40
Author(s):  
Naixia Mou ◽  
Haonan Ren ◽  
Yunhao Zheng ◽  
Jinhai Chen ◽  
Jiqiang Niu ◽  
...  
Keyword(s):  
Traffic Flow ◽  
Network Flow ◽  
Road Traffic ◽  
Flow Analysis ◽  
Silk Road ◽  
Identification System ◽  
Traffic Network ◽  
Trajectory Data ◽  
Maritime Traffic ◽  
Maritime Silk Road

Maritime traffic can reflect the diverse and complex relations between countries and regions, such as economic trade and geopolitics. Based on the AIS (Automatic Identification System) trajectory data of ships, this study constructs the Maritime Silk Road traffic network. In this study, we used a complex network theory along with social network analysis and network flow analysis to analyze the spatial distribution characteristics of maritime traffic flow of the Maritime Silk Road; further, we empirically demonstrate the traffic inequality in the route. On this basis, we explore the role of the country in the maritime traffic system and the resulting traffic relations. There are three main results of this study. (1) The inequality in the maritime traffic of the Maritime Silk Road has led to obvious regional differences. Europe, west Asia, northeast Asia, and southeast Asia are the dominant regions of the Maritime Silk Road. (2) Different countries play different maritime traffic roles. Italy, Singapore, and China are the core countries in the maritime traffic network of the Maritime Silk Road; Greece, Turkey, Cyprus, Lebanon, and Israel have built a structure of maritime traffic flow in the eastern Mediterranean Sea, and Saudi Arabia serves as a bridge for maritime trade between Asia and Europe. (3) The maritime traffic relations show the characteristics of regionalization; countries in west Asia and the European Mediterranean region are clearly polarized, and competition–synergy relations have become the main form of maritime traffic relations among the countries in the dominant regions. Our results can provide a scientific reference for the coordinated development of regional shipping, improvement of maritime competition, cooperation strategies for countries, and adjustments in the organizational structure of ports along the Maritime Silk Road.

SiLK: A Tool Suite for Unsampled Network Flow Analysis at Scale

2014 ◽  
Author(s):  
Mark Thomas ◽  
Leigh Metcalf ◽  
Jonathan Spring ◽  
Paul Krystosek ◽  
Katherine Prevost
Keyword(s):  
Network Flow ◽  
Flow Analysis

scholarly journals Green Governance: New Perspective from Open Innovation

2018 ◽  
Vol 10 (11) ◽  
pp. 3845 ◽  
Author(s):  
Weian Li ◽  
Jian Xu ◽  
Minna Zheng
Keyword(s):  
Open Innovation ◽  
Economic Value ◽  
Governance Structure ◽  
Structure Design ◽  
Governance Mechanism ◽  
Innovation Activities ◽  
Green Governance ◽  
New Perspective ◽  
Innovation Mode ◽  
Human And Nature

Environmental problems caused by human behaviors have become increasingly serious in recent decades, thereby driving global green governance issue to become an important research agenda. The proper governance structure design and governance mechanism arrangement can effectively coordinate the relationship between human and nature. Literatures have provided mixed evidence of harmonious development of economy, society and environment. However, few studies have examined the balance of interests between human appeal and natural environment from the perspective of governance. Open innovation activities can effectively deal with the externalities of resources and environment and then relatively balance the economic value and green value of organizations, which is an effective green governance mode, reflecting the characteristics of the main subject composition and mechanism operation of green governance. This paper attempts to build a green governance framework for the cooperation based on sustainable development among enterprises, governments, social organizations, the public and the nature. This paper examines the synergy between human and nature by presenting a framework, including related theories of green governance, innovation subjects, innovation mechanisms and innovation mode. Each country and region could use the suggested framework to develop green governance guidelines that are suitable for the environmental carrying capacity of their own countries or regions. Enterprises could use the suggested framework to develop green development strategies to coordinate the economic values and green values.

scholarly journals Operational Lifecycle Carbon Value of Bus Electrification in Macau

2020 ◽  
Vol 12 (9) ◽  
pp. 3784
Author(s):  
Xinkuo Xu ◽  
Liyan Han
Keyword(s):  
Emission Reduction ◽  
Carbon Emission ◽  
Fossil Fuel ◽  
Economic Value ◽  
Carbon Price ◽  
Emission Coefficient ◽  
Carbon Emission Reduction ◽  
Academic Fields ◽  
Fossil Fuel Consumption ◽  
New Perspective

The economic value of carbon emission reduction in the electrification of buses is of concern in practical and academic fields. The aim of this paper, which focuses on direct and indirect carbon emissions, is to study the economic value of the carbon emission reduction of bus electrification in an operational lifecycle carbon footprint, with the empirical data sourced from the bus electrification in Macau. First, it proposes the methodology to evaluate the operational lifecycle carbon value of bus electrification (OLCVBE). Second, it analyses the distinct impacts of internal determinants on OLCVBE. Third, it discusses the determinants’ characteristics for OLCVBE. The results indicate that (1) OLCVBE may be a carbon debt, but it is not a carbon asset in some situations; (2) OLCVBE is determined by the carbon emission coefficients of both electric power and fossil fuel, buses’ electric or fossil fuel consumption levels, buses’ terminations, carbon price and discounted rate; and (3) as a comparison, electric power’s embedded carbon emission coefficient has the biggest impact on OLCVBE, then carbon price and the electric consumption have the second or third biggest impacts, and the annual driving distance of buses has relative less impact. This paper provides a new perspective to study the economic and environmental effects of bus electrification.

scholarly journals Potential spesies from the Dipterocarp family at Mandailing Natal Forest Production Management Unit, North Sumatra, Indonesia

2021 ◽  
Vol 912 (1) ◽  
pp. 012003
Author(s):  
S Latifah ◽  
M Zahrah
Keyword(s):  
Production Management ◽  
Economic Value ◽  
Secondary Data ◽  
Average Diameter ◽  
Management Unit ◽  
Species Trees ◽  
Ecological Value ◽  
Forest Production ◽  
Herbarium Collections ◽  
North Sumatra

Abstract Sumatra has extensive forests, rich in tree species, especially the Dipterocarpaceae species, which have high economic and ecological value in the development sector. The enormous number of Dipterocarpaceae species and the paucity of herbarium collections make identifying species quite easy. The study’s goal was to learn more about the Dipterocarpaceae family tree’s species, diameter, and height in the Mandailing Natal Forest Production Management Unit (KPHP ) in North Sumatra. Diameter and height data of Shorea sp was based on secondary data processing. The inventory revealed that the Dipterocarpaceae family has 12 different species. Trees in the Dipterocarpaceae family have an average diameter of 44.5 cm and a height of 20 cm. This inventory is expected to offer information on the several Dipterocarpacea families that can be found in this area, particularly those with high economic value and those that are protected.

scholarly journals An Empirical Analysis of an Integrated Accounting Method to Assess the Non-Monetary and Monetary Value of Ecosystem Services

2020 ◽  
Vol 12 (20) ◽  
pp. 8296
Author(s):  
Yubang Liu ◽  
Yunan Yan ◽  
Xin Li
Keyword(s):  
Ecosystem Services ◽  
Empirical Analysis ◽  
Ecosystem Service ◽  
Economic Value ◽  
Correlation Coefficients ◽  
Classification Systems ◽  
Ecological Value ◽  
Ecosystem Service Value ◽  
Service Value ◽  
Value Evaluation

The process of ecosystem service value evaluation has developed from the use of a single economic value that only accounts for material products to an assessment of ecological value and the value of ecosystem services. However, due to the complexity of ecosystems and different understandings of ecosystem service values, different classification methods of ecosystem services and service values have been developed internationally, and this has resulted in a lack of clarity regarding the correlation between ecosystem service value and various ecosystems. The correspondence between the system and each value type is not clear; therefore, based on an analysis of the inadequacy of domestic and foreign ecosystem service classification systems and methods, this study constructed a new accounting framework for non-monetary ecosystem service functions based on emergy analysis and integrated monetary accounting methods. The practical application of the method was also researched. The research results re-classified the value of ecosystem services, established an accounting method for various ecosystem service values, clarified the principle of addition in accounting, and avoided double counting. In the empirical analysis, a large number of correlation coefficients, parameters, and index values found in the foreign literature were used, so, our method also has value for international use.

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