Weighted Aggregate Reverse Rank Queries

2018 ◽  
Vol 4 (2) ◽  
pp. 1-23 ◽  
Author(s):  
Yuyang Dong ◽  
Hanxiong Chen ◽  
Jeffrey Xu Yu ◽  
Kazutaka Furuse ◽  
Hiroyuki Kitagawa
Keyword(s):  
Weighted Aggregate

Measuring urban competitiveness: ranking European large urban zones

2017 ◽  
Vol 10 (5) ◽  
pp. 479-496 ◽  
Author(s):  
Lucía Sáez ◽  
Iñaki Periáñez ◽  
Iñaki Heras-Saizarbitoria
Keyword(s):  
Economic Development ◽  
Related Factors ◽  
Urban Competitiveness ◽  
Content Type ◽  
Basic Dimension ◽  
Level Of Economic Development ◽  
Complex Relationships ◽  
Weighted Aggregate ◽  
High Level ◽  
Practical Implications

Purpose This paper aims to identify the main dimensions that determine the ability of cities to compete as locations for business and hubs for investment which can help policymakers to manage and prioritize urban development strategies. Design/methodology/approach A composite indicator is proposed as a weighted aggregate of sub-indicators for the identified component dimensions (basic, efficiency-related and innovation-related competitiveness). The indicator is used to draw up a ranking of 159 European Large Urban Zones (LUZs) located in 26 EU countries based on 31 indicators, broken down into the three core dimensions of urban competitiveness identified. Findings The dimensions underlying urban competitiveness in relation to the location of firms and attracting investment determine the level of economic development of the LUZs. The most competitive cities in the sample have a high level of economic development, and the innovation dimension is the most significant one for the three groups of cities considered, followed by the efficiency dimension and, to a lesser extent, the basic dimension. Practical implications The findings provide guidance to policymakers on the most relevant dimensions for urban competitiveness. Originality/value This paper contributes to the literature shedding light on the complex relationships between efficiency-related and innovation-related factors with regard to urban competitiveness.

A “Weighted Aggregate” Approach to R & D Project Selection

1971 ◽  
Vol 3 (1) ◽  
pp. 22-31 ◽  
Author(s):  
David H. Gustafson ◽  
Gopinath K. Pai ◽  
Gary C. Kramer
Keyword(s):  
Project Selection ◽  
Weighted Aggregate

An Iterative Transient Rank Aggregation Technique for Mitigation of Rank Reversal

2018 ◽  
Vol 9 (1) ◽  
pp. 40-50
Author(s):  
Bikash Bepari ◽  
Shubham Kumar ◽  
Awanish Tiwari ◽  
Divyam ◽  
Sharjil Ahmar
Keyword(s):  
Terminal Condition ◽  
Rank Aggregation ◽  
Borda Rule ◽  
Average Rank ◽  
Rank Reversal ◽  
Linear Programming Methods ◽  
Copeland Method ◽  
Aggregation Technique ◽  
Weighted Aggregate ◽  
Separation Measure

With the advent of decision science, significant elucidation has been sought in the literature of multi criteria decision making. Often, it is observed that for the same MCDM problem, different methods fetch way-apart ranks and the phenomenon leads to rank reversal. To alleviate this problem, different methodologies like the Borda rule, the Copeland method, the Condorcet method, the statistical Thurstone scaling, and linear programming methods are readily available in the literature. In connection with the same, the authors proposed a novel technique to aggregate the ranks laid by different methods. The algorithm initially assigns equal weights to the methods involved to avoid biasness to a particular method and a simple average rank was obtained. Then, after the separation measures of individual methods with respect to average rank were calculated. Considering the separation measure the higher the weightage, the dynamic weights are ascertained to declare the weighted aggregate rank subjected to the terminal condition which include whether the previous rank equals to the current rank or not. To substantiate the proposed algorithm, a materials selection problem was taken into consideration and solved with the proposed technique. Moreover, the same problem was solved by existing voting techniques like the Borda and the Copeland-Condoract methods. The authors found a correlation of more than 85% between the proposed and existing methodologies.

scholarly journals THE RESIDENCE PLOT SELECTION MODEL FOR FAMILY HOUSE IN VILNIUS BY NEUTROSOPHIC WASPAS METHOD

2020 ◽  
Vol 24 (3) ◽  
pp. 182-196 ◽  
Author(s):  
Romualdas Baušys ◽  
Birutė Juodagalvienė ◽  
Rytė Žiūrienė ◽  
Ina Pankrašovaitė ◽  
Juozas Kamarauskas ◽  
...  
Keyword(s):  
Evaluation Model ◽  
Living Environment ◽  
Social Aspects ◽  
Single Family ◽  
Theoretical Evaluation ◽  
Sustainable Living ◽  
Product Assessment ◽  
Global Planning ◽  
Weighted Aggregate ◽  
Family House

Good quality dwelling and the environment are related to the values of citizens’ existence. It can be highlighted as important questions in creating a sustainable living environment. The research and analysis carried out so far include global planning of the plot of a particular country or city according to economic aspects. Meanwhile, our model, which covers the key social aspects of choosing a residential house, will fill this gap. We propose an original problem formulated which includes the planning of the plot of a particular city according to economic, environmental and social aspects. Our work aims to investigate the criteria for the selection of single-family houses and to develop a theoretical evaluation model based on decision-making methods. The presented study deals with the problem of selecting a one-family house plot using the Weighted Aggregate Sum Product Assessment Methods (WASPAS) and the Step-Wise Weight Assessment Ratio Analysis Method (SWARA). During the research, parameters related to plot selection were evaluated: infrastructure, distance, cost, privacy, security and aesthetic view.

scholarly journals Performance Evaluation Of The Hydropower Plants Using Various Multi-Criteria Decision-Making Techniques

2019 ◽  
Vol 8 (6) ◽  
pp. 2131-2138
Keyword(s):  
Decision Making ◽  
Performance Evaluation ◽  
Preference Ranking ◽  
Multi Criteria Decision Making ◽  
Power House ◽  
Hydropower Plants ◽  
Sardar Sarovar ◽  
And Performance ◽  
Weighted Aggregate ◽  
Maintenance Schedules

Annual growth of 2.3 % since 1990 to 2017 in the hydropower sector in India indicates it holds a vital position in the growth of electricity generation in the country. For effective and efficient running of the hydropower projects, maintenance schedules and performance evaluation have to be done. Thus, this paper presents the performance evaluation of four different hydro-powerhouses belonging to a different class. Multi-criteria decision making (MCDM) method stepwise weight assessment ratio analysis (SWARA) is used to calculate the weights. The weights calculated by SWARA are employed to assess the performance scores or ranks of Indira Sagar Project (ISP), Canal Head Power House (CHPH) and River Bed Power House (RBPH) at Sardar Sarovar Narmada Nigam Ltd. (SSNNL) by integrating SWARA with the MCDM techniques like weighted aggregate sum product assessment (WASPAS), technique for order of preference by similarity to ideal solution (TOPSIS) and preference ranking organization method for enrichment evaluation (PROMETHEE). A comparative analysis of these integrated methods is presented for improved future studies in the area of decision making. The results in this paper show performance rankings of the available alternatives, calculated using integrated SWARA-WASPAS, SWARA-TOPSIS and SWARA-PROMETHEE methods. Performance ranks obtained by SWARA-WASPAS and SWARA-TOPSIS methods are in the order ISP, RBPH, CHPH and LSPH, which shows similarity with the on-field performances and are well suited for the performance evaluation of hydropower projects

Characteristics of Char From Co-Pyrolysis of Biomass and Plastic Waste

2018 ◽  
Author(s):  
K. G. Burra ◽  
A. K. Gupta
Keyword(s):  
Energy Production ◽  
Fossil Fuels ◽  
Plastic Waste ◽  
Char Yield ◽  
Limited Information ◽  
Efficient Utilization ◽  
Plastic Wastes ◽  
Weighted Aggregate ◽  
Pyrolysis Of Biomass

Development of alternative, clean and renewable energy production from different hydrocarbon materials helps to partially replace the limited resources of fossil fuels and also help reduce carbon emissions from fossil fuels that drives global warming. Biomass and bio-wastes are renewable and sustainable hydrocarbon resources, which can be used for energy and fuels production along with permanent disposal of plastic wastes. Landfills of wastes is unsustainable with additional problems of non-degradability and growing burden to the environment and society. Co-pyrolysis and co-gasification of biomass with different types of plastic wastes has shown to provide enhanced product yields and quality for syngas and liquid fuel production. To date, limited information is available on the understanding of chars produced from co-pyrolysis. The effect of co-pyrolysis on the type, quality and yield of chars produced is essential for efficient utilization of a wide variety of biomass, bio-waste and plastic waste resources. This paper provides information on the effect of plastic addition to the pyrolysis of biomass as well as the quality and quantity of char produced with different amounts of plastic waste added at different pyrolysis temperatures. TGA reactor was used for all these investigations and the quality of char produced was examined from the perspective of char combustion for energy production. Char is commonly produced as a by-product from pyrolysis and gasification reactors. Carbonization temperatures investigated were in the range of 573–773 K for 30 min using pinewood biomass, while recycled polyethylene terephthalate was used as plastic waste. The investigations revealed that chars produced from co-pyrolysis especially for carbonization temperature (Tc) of 673 K and above behaved completely differently than the chars produced from separate pyrolysis of biomass and plastic waste under the same pyrolysis conditions. These chars produced from co-pyrolysis were more uniform in their behavior in oxidation environment, with higher heat flow for almost similar quantities of chars during oxidation. This was conjectured to be from enhanced quality of chars produced having increased C content (from increased heavy aromatics and efficient loss of volatiles) during co-pyrolysis without any loss of char yield. The char yield was found to be equal or higher during co-pyrolysis compared to the weighted aggregate of individual pyrolysis. These investigations provided novel results on the behavior and capabilities of chars produced from co-pyrolysis of biomass and plastic wastes to provide a new avenue for the quality enhancement of bio-chars and efficient utilization of carbonaceous solid waste resources.

scholarly journals Childhood sexual abuse and non-suicidal self-injury: meta-analysis

2008 ◽  
Vol 192 (3) ◽  
pp. 166-170 ◽  
Author(s):  
E. David Klonsky ◽  
Anne Moyer
Keyword(s):  
Risk Factors ◽  
Sexual Abuse ◽  
Childhood Sexual Abuse ◽  
Empirical Evidence ◽  
Meta Analysis ◽  
Effect Sizes ◽  
Self Injury ◽  
History Of ◽  
Weighted Aggregate ◽  
The Relationship

BackgroundMany theorists posit that childhood sexual abuse has a central role in the aetiology of self-injurious behaviour. Studies that report statistically significant associations between a history of such abuse and self-injury are cited to support this view.AimsA meta-analysis was conducted to determine systematically the magnitude of the association between childhood sexual abuse and self-injurious behaviour.MethodForty-five analyses of the association were identified. Effect sizes were converted to a standard metric and aggregated.ResultsThe relationship between childhood sexual abuse and self-injurious behaviour is relatively small (mean weighted aggregate ϕ=0.23). This figure may be inflated owing to publication bias. In studies that statistically controlled for psychiatric risk factors, childhood sexual abuse explained little or no unique variance in self-injurious behaviour.ConclusionsTheories that childhood sexual abuse has a central or causal role in the development of self-injurious behaviour are not supported by the available empirical evidence. Instead, it appears that the two are modestly related because they are correlated with the same psychiatric risk factors.

A Cost Index for Southern Forest Practices

1991 ◽  
Vol 15 (3) ◽  
pp. 128-133 ◽  
Author(s):  
Mark R. Dubois ◽  
Thomas J. Straka ◽  
W. F. Watson
Keyword(s):  
Control Measures ◽  
Cost Index ◽  
Product Price ◽  
Relative Contribution ◽  
Forest Practices ◽  
Index Changes ◽  
Weighted Aggregate ◽  
Internal And External Factors ◽  
Forest Practice ◽  
Practice Cost

Abstract Simple forest practice cost indexes, a weighted aggregate Southern Forest Practice Cost Index (SFPCI), and a Southern Forest Employee Wage Index (SFEWI) are developed. The SFPCI measures temporal changes in average costs of a fixed "operations basket" of southern forest practices. Each forest practices's relative contribution to the SFPCI are also calculated. General trends, and internal and external factors influencing cost index changes throughout time are examined in order to provide forestry managers insight for cost control measures. Simple cost indexes indicate all but two of the forest practices examined experienced cost increases from 1982 to 1988. The weighted aggregate SFPCI increased by 15% from 1982 to 1988, while the SFEWI increased by 19%; and inflation, as measured by the implicit Gross National Product price deflator, increased by 21%. In 1988, according to relative importance contribution values, forest practices associated with the establishment of new forestry crops accounted for 71% of total forest practice expenditures. South. J. Appl. For. 15(3):128-133.

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