BSM2 Plant-Wide Model construction and comparative analysis with other methodologies for integrated modelling

2007 ◽  
Vol 56 (8) ◽  
pp. 57-65 ◽  
Author(s):  
P. Grau ◽  
P. Vanrolleghem ◽  
E. Ayesa
Keyword(s):  
Comparative Analysis ◽  
Simulation Model ◽  
Process Models ◽  
Model Construction ◽  
Integrated Modelling ◽  
Unit Process ◽  
Interface Unit

In this paper, a new methodology for integrated modelling of the WWTP has been used for the construction of the Benchmark Simulation Model N°2 (BSM2). The transformations-approach proposed in this methodology does not require the development of specific transformers to interface unit process models and allows the construction of tailored models for a particular WWTP guaranteeing the mass and charge continuity for the whole model. The BSM2 PWM constructed as case study, is evaluated by means of simulations under different scenarios and its validity in reproducing water and sludge lines in WWTP is demonstrated. Furthermore the advantages that this methodology presents compared to other approaches for integrated modelling are verified in terms of flexibility and coherence.

Improving the integrated reporting of electric-power industry companies

2020 ◽  
Vol 23 (8) ◽  
pp. 922-939
Author(s):  
N.V. Malinovskaya ◽  
M.D. Malinovskii
Keyword(s):  
Comparative Analysis ◽  
Electric Power ◽  
Electric Power Industry ◽  
Power Industry ◽  
Integrated Reporting ◽  
Strategic Objectives ◽  
Methods Of Analysis ◽  
Analysis And Synthesis ◽  
Guiding Principles

Subject. This article deals with the issues relating to improving integrated reporting in terms of dovetailing strategic objectives with capital changes. Objectives. The article aims to develop a system of indicators for disclosure of capital types in integrated reporting of electricity generating companies, as well as recommendations aimed at implementing the fundamental concepts and guiding principles of integrated reporting. Methods. For the study, we used the methods of analysis and synthesis, comparison, generalization, and abstraction. As a case study, we conduct a comparative analysis of the disclosure of six types of capital by the largest electricity generating companies, namely PAO Inter RAO, AO Rosenergoatom and PAO RusHydro. Results. The article formulates proposals for disclosure of capital information to address such a lack of accountability as a contradiction to the principle of coherence. It proposes a system of indicators (core and additional) for disclosure of six types of capital by electricity generating companies. Conclusions. A significant reporting problem is the lack of correlation between key strategic objectives and capital changes. The formulated recommendations for disclosure of capital information can help solve this problem, and increase the attractiveness of the integrated report for capital providers.

Non-standard functions and structures of ministries of finance under economic challenges: A case study of Western governments

2020 ◽  
Vol 26 (11) ◽  
pp. 2448-2471
Author(s):  
S.V. Anureev
Keyword(s):  
Economic Growth ◽  
Economic Development ◽  
Comparative Analysis ◽  
Great Britain ◽  
Central Banks ◽  
Economic Recovery ◽  
Budget Process

Subject. This article examines the functions and management structures of central financial bodies and related parliamentary and governmental structures in Australia, Canada, Great Britain, Japan, Germany, France and Italy. Objectives. The article aims to identify non-standard functions and structures that go beyond the classical responsibility of finance ministries as a central part of the budget process arising from current economic challenges. Methods. For the study, I used a comparative analysis. Results. The article describes the important new functions of financial authorities and treasuries of Western governments aimed at economic growth and economic recovery. Conclusions. The organizational and management structures and functions of the ministries of finance go far beyond the budget process, overlap with and dominate the functions of central banks and ministries of economic development.

Wissensasymmetrien, Interaktionsrollen und die Frage der „gemeinsamen“ Sprache in der interdisziplinären Projektkommunikation

Fachsprache ◽  
2017 ◽  
Vol 33 (3-4) ◽  
pp. 187-204
Author(s):  
Nina Janich ◽  
Ekaterina Zakharova
Keyword(s):  
Process Models ◽  
Project Work ◽  
Common Language ◽  
Project Proposal ◽  
Communication Problems ◽  
Project Participants ◽  
Interdisciplinary Projects ◽  
Social Scientific ◽  
Initial Results

goal of the present discourse analysis is to report on the initial results of a DFG project on communication in interdisciplinary projects. Based on a case study, the following questions were investigated: 1) at what times or phases of a project communication problems occur, 2) what kinds of problems occur as a result of knowledge asymmetries, and 3) which interactive and discourse roles do participants take on when facing such problems? Three main conclusions can be drawn from the findings; first, that linguistic-communicative problems occurring in interdisciplinary projects are not simply a result of attempts to find a “common language”, but are grounded in issues of contextual, methodological, organisitory, and socio-pragmatic agreements. Second, these communication problems arise during the initial, preparatory phases of a project, earlier than social scientific process models suggest, i. e. as early as the writing and submission of the project proposal, as opposed to when the project work actually begins. Third, that these problems, induced by the inevitable presence of knowledge asymmetries among participants, must be resolved not only through active and consistent meta-communication, but also through meta-meta-communication. Evidence for these findings was gathered by means of interviews with project participants in which they reflected on the phase of jointly writing their project proposal from the perspective of their respective disciplines.

Land, People and Power in Early Medieval Wales: The cantref of Cemais in comparative perspective

2020 ◽  
Author(s):  
Rhiannon Comeau
Keyword(s):  
Comparative Analysis ◽  
Urban Society ◽  
Comparative Perspective ◽  
Seasonal Activity ◽  
Early Medieval ◽  
Habitual Activity ◽  
Activity Cycles

A study of seasonal activity cycles in a pre-urban society, examined through the lens of an early medieval Welsh case study. It examines how these cycles shaped patterns of power and habitual activity, defining spaces and structuring lives. Its multidisciplinary, comparative analysis identifies focal zones and challenges commonly applied interpretations.

MULTI-HOP WIRELESS NETWORKS AUTOMATED SIMULATION

2017 ◽  
Vol 13 (3) ◽  
pp. 68-78
Author(s):  
A. A. Pavlov ◽  
I. O. Datyev ◽  
M. G. Shishaev
Keyword(s):  
Wireless Networks ◽  
Comparative Analysis ◽  
Simulation Model ◽  
Conceptual Model ◽  
Software Package ◽  
Software Tools ◽  
Specialized Software ◽  
Automated Simulation ◽  
Network Simulators ◽  
Modern Experience

Simulation is the main way for testing technologies in the field of multi-hop wireless networks (MWN). Creating a simulation model MWN - a time-consuming task associated with the use of specialized software tools, called network simulators. In this paper, the modern experience of modeling MWN and the main problems are formulated. One of the main problem is the comparative analysis' impossibility of the experiments results conducted by various researchers. This is due to the reasons associated with the models used for testing, the planning an imitation experiment and the principal differences in the network simulators. To solve this problem, authors propose a generalized conceptual model of MWN simulation and a specialized software package that automates the execution of experiment series in a heterogeneous modeling environment.

Statistical approach for describing failures and lifetimes of water mains

1998 ◽  
Vol 38 (6) ◽  
pp. 209-217 ◽  
Author(s):  
Jianhua Lei ◽  
Sveinung Sægrov
Keyword(s):  
Data Base ◽  
Ductile Iron ◽  
Counting Process ◽  
Statistical Approach ◽  
Process Models ◽  
Average Lifetime ◽  
Maintenance Practice ◽  
Water Mains ◽  
Near Future

This paper demonstrates the statistical approach for describing failures and lifetimes of water mains. The statistical approach is based on pipe inventory data and the maintenance data registered in the data base. The approach consists of data pre-processing and statistical analysis. Two classes of statistical models are applied, namely counting process models and lifetime models. With lifetime models, one can estimate the probability which a pipe will fail within a time horizon. With counting process models one can see the deteriorating (or improving) trend in time of a group of “identical” pipes and their rates of occurrence of failure (ROCOF). The case study with the data base from Trondheim municipality (Norway) demonstrates the applicability of the statistical approach and leads to the following results: 1). In the past 20 years, Trondheim municipality has experienced approximately 250 to 300 failures per year. However, the number of failures per year will significantly increase in the near future unless better maintenance practice is implemented now. 2). Unprotected ductile iron pipes have a higher probability of failures than other materials. The average lifetime of unprotected ductile iron pipes is approximately 30 to 40 years shorter than the lifetime of a cast iron pipe. 3). Pipes installed 1963 and 1975 are most likely to fail in the future; 4) The age of a pipe does not play a significant role for the remaining lifetime of the pipe; 5). After 2 to 3 failures, a pipe enters a fast-failure stage (i.e., frequent multiple between failures).

scholarly journals A Comparative Analysis of Two Major Approaches for Mapping the Wildland-Urban Interface: A Case Study in California

Land ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 679
Author(s):  
Avi Bar-Massada
Keyword(s):  
At Risk ◽  
Comparative Analysis ◽  
Spatial Patterns ◽  
Practical Purpose ◽  
Spatial Arrangement ◽  
Spatial Accuracy ◽  
Wildland Urban Interface ◽  
Spatial Correspondence ◽  
Data Requirements

The Wildland Urban Interface (WUI) is where human settlements border or intermingle with undeveloped land, often with multiple detrimental consequences. Therefore, mapping the WUI is required in order to identify areas-at-risk. There are two main WUI mapping methods, the point-based approach and the zonal approach. Both differ in data requirements and may produce considerably different maps, yet they were never compared before. My objective was to systematically compare the point-based and the zonal-based WUI maps of California, and to test the efficacy of a new database of building locations in the context of WUI mapping. I assessed the spatial accuracy of the building database, and then compared the spatial patterns of WUI maps by estimating the effect of multiple ancillary variables on the amount of agreement between maps. I found that the building database is highly accurate and is suitable for WUI mapping. The point-based approach estimated a consistently larger WUI area across California compared to the zonal approach. The spatial correspondence between maps was low-to-moderate, and was significantly affected by building numbers and by their spatial arrangement. The discrepancy between WUI maps suggests that they are not directly comparable within and across landscapes, and that each WUI map should serve a distinct practical purpose.

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