Generalized competition index of primitive digraphs

2017 ◽  
Vol 33 (2) ◽  
pp. 475-484
Author(s):  
Li-hua You ◽  
Fang Chen ◽  
Jian Shen ◽  
Bo Zhou
Keyword(s):  
Competition Index ◽  
Primitive Digraphs

Konkurrenz zwischen Stieleiche und Buche auf Lothar-Sturmflächen | Competition between pedunculate oak and European beech on Lothar windthrow areas

2009 ◽  
Vol 160 (5) ◽  
pp. 114-123 ◽  
Author(s):  
Daniel Otto ◽  
Sven Wagner ◽  
Peter Brang
Keyword(s):  
Large Scale ◽  
Early Stage ◽  
Tree Height ◽  
European Beech ◽  
Threshold Value ◽  
Test Methods ◽  
Permanent Plots ◽  
Pedunculate Oak ◽  
Competitive Pressure ◽  
Competition Index

The competitive pressure of naturally regenerated European beech (Fagus sylvatica) saplings on planted pedunculate oak (Quercus robur) was investigated on two 1.8 ha permanent plots near Habsburg and Murten (Switzerland). The plots were established with the aim to test methods of artificial oak regeneration after large-scale windthrow. On both plots, 80 oaks exposed to varying levels of competitive pressure from at most 10 neighbouring beech trees were selected. The height of each oak as well as stem and branch diameters were measured. The competitive pressure was assessed using Schütz's competition index, which is based on relative tree height, crown overlap and distance from competing neighbours. Oak trees growing without or with only slight competition from beech were equally tall, while oaks exposed to moderate to strong competition were smaller. A threshold value for the competition index was found above which oak height decreased strongly. The stem and branch diameters of the oaks started to decrease even if the competition from beech was slight, and decreased much further with more competition. The oak stems started to become more slender even with only slight competition from beech. On the moderately acid beech sites studied here, beech grow taller faster than oak. Thus where beech is competing with oak and the aim is to maintain the oak, competitive pressure on the oak must be reduced at an early stage. The degree of the intervention should, however, take the individual competitive interaction into account, with more intervention if the competition is strong.

Eurasian Competitive Capacity Turkey

2016 ◽  
Author(s):  
Hakkı Çiftçi ◽  
Aliye Erşahinoğlu
Keyword(s):  
Technological Development ◽  
New Ventures ◽  
Study Data ◽  
Source Distribution ◽  
Global Competition ◽  
Competition Index ◽  
Balanced Growth ◽  
Innovative Management ◽  
Energy Trade ◽  
And Function

New ventures and creation of market awareness and industrial competition make competition as a prior concept. From this, evaluation of Eurasian competition capacity from the viewpoint of Turkey gains importance as an issue. Within the scope of EU 2020; 3 thematic priorities, 5 main targets, 7 initiatives were determined as a basis. This study that aims developing innovative management and achieving sustainable and more balanced growth with powerful innovative competition capacity, will take basic policies, which will create the competition capacity leans from Turkey to Eurasia, as a basis. This study also includes the analyses of sectoral competition capacity from Turkey to Eurasia as well as legal regulations, energy, trade, employment and geographical dimensions. As the method of this study, data regarding the indications of competition capacity over the last decade will be evaluated, deficiencies will be determined, source distribution will be directed, technological development functions will be achieved, efficient and function competition will be coordinated with the economic growth and a series of measurements will be taken and competition policies will be established in this regard. This study will also analyze the competition policies of Turkey and Eurasia and their objectives, efficiency and measurement of competition, general overview of Eurasian economies, global competition in Eurasian countries, index sequencing and scores in accordance with developed innovation in terms of Azerbaijan, Kazakhstan, Kyrgyzstan, Tajikistan and Turkey. Through the evaluation of rankings of Eurasian economies within Global Competition Index as well as the scores and Global Competition Report, the study will be concluded.

A New Index Representing Individual Tree Competitive Status

1973 ◽  
Vol 3 (4) ◽  
pp. 495-500 ◽  
Author(s):  
James A. Moore ◽  
Carl A. Budelsky ◽  
Richard C. Schlesinger
Keyword(s):  
Spatial Distribution ◽  
Strong Correlation ◽  
Basal Area ◽  
Tree Size ◽  
Competition Index ◽  
Individual Tree ◽  
Silvicultural Practices ◽  
Basal Area Growth ◽  
Hardwood Species ◽  
Area Growth

A new competition index, modified Area Potentially Available (APA), was tested in a complex unevenaged stand composed of 19 different hardwood species. APA considers tree size, spatial distribution, and distance relationships in quantifying intertree competition and exhibits a strong correlation with individual tree basal area growth. The most important characteristic of APA is its potential for evaluating silvicultural practices.

scholarly journals Competition Indexes to Evaluate Tree Growth in a Semi-Deciduous Seasonal Forest

2019 ◽  
Vol 26 (4) ◽  
Author(s):  
Ilvan Medeiros Lustosa Junior ◽  
Renato Vinícius Oliveira Castro ◽  
Ricardo de Oliveira Gaspar ◽  
Juliana Baldan Costa Neves Araújo ◽  
Fabiana de Gois Aquino
Keyword(s):  
Tree Growth ◽  
Basal Area ◽  
Natural Forests ◽  
Competition Index ◽  
Radius Of Influence ◽  
Fixed Radius ◽  
The Subject

ABSTRACT Most of the studies that analyze the behavior of tree competition approach even-aged plantations. Therefore, it is possible to notice a lack of this kind of information regarding natural forests with high biodiversity. The objective of this study was to evaluate the competition in a fragment of Semi-Deciduous Seasonal Forest, according to the ecologic group, light depending and non-depending groups for all species sampled in the fragment. The Distance Independent Competition Index and Semi-Distance Independent Competition Index were applied in this study. The basal area in larger trees index, without the radius of influence, was the most efficient to analyze how the competition affects the growth of the specimens in the studied fragment. It was stated that evaluating the competition per ecologic group is more efficient. The results confirm that the forest competition cannot be determined by considering only a fixed radius of influence that embraces the neighbors and the subject tree.

COMPETITION, RISK AND PROFITABILITY IN BANKING SYSTEM — EVIDENCE FROM VIETNAM

2020 ◽  
Vol 65 (06) ◽  
pp. 1491-1505
Author(s):  
THI HIEN NGUYEN ◽  
HA GIANG TRAN
Keyword(s):  
Information Technology ◽  
Risk Reduction ◽  
Commercial Banks ◽  
Banking System ◽  
Bank Competition ◽  
Competition Index ◽  
Data Set ◽  
Bank Profitability ◽  
Empirical Results ◽  
The Impact

The development in information technology results in a significant increase in bank competition. The question of whether increased competition improves bank profitability and risk reduction is important in many aspects. This paper analyzes the impact of competition on profitability and risk in the context of Vietnam using OLS estimator on data set of 37 Vietnamese commercial banks. The main results present that banks with a higher competition index tend to have higher profitability which is measured by ROE and NIM. In addition, our empirical results also show that banks tend to take on more risk when facing increased competition.

Sign in / Sign up

Export Citation Format

Share Document