scholarly journals Investigating the Impact of the Prefabrication Concept on the Design and Selection of Building Components, Case Study: Peripheral Walls in Mass Housing Projects

2020 ◽  
Vol 27 (2) ◽  
pp. 40-52
Author(s):  
Mohammadhossein Azizibabani ◽  
Khosro Daneshjoo ◽  
Saeid Saharkhizan
Keyword(s):  
Analytic Hierarchy ◽  
Criteria And Indicators ◽  
Housing Projects ◽  
Mass Housing ◽  
New Material ◽  
Building Components ◽  
Technical Specifications ◽  
The One ◽  
The Impact ◽  
Selection Of

Today, Prefabrication is considered as one of the concepts of industrialization in response to the growing needs of human societies for development. It is particularly important to address this concept in mass housing projects. The most important goals in adopting the prefabrication approach are to increase construction speed and quality and reduce costs. A review of the literature on prefabrication illustrates the importance of Design for Manufacturability and Design for Assembly concepts about components of prefabricated systems. In this regard, this research has been carried out to identify the criteria and indicators for selection of prefabricated peripheral walls and to design a system based on updatable databases to select proper options according to the importance of criteria and indicators in various mass housing projects. The research method is descriptive-analytical. The results indicate the necessity of involving building material suppliers in designing the mentioned system. Therefore, it is envisaged to continuously import new material specifications in the form of suggested options by the material suppliers in the system’s database. Peripheral wall selection criteria and indicators extracted from the literature review of prefabrication and an Analytic Hierarchy Process structure is proposed to obtain the appropriate options considering the importance of criteria and indicators. To determine the scoring criteria for options, on the one hand, the standards set for the technical specifications of materials were discussed and on the other hand, examples include materials and Peripheral wall systems based on the prefabrication criteria, were investigated.

scholarly journals Identification and Classification of the Unique Features of Mass Housing Projects

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Titus Ebenezer Kwofie ◽  
Frank Fugar ◽  
Emmanuel Adinyira ◽  
Divine Kwaku Ahadzie
Keyword(s):  
Management Practices ◽  
Management Skills ◽  
Building Projects ◽  
Housing Projects ◽  
Mass Housing ◽  
Unique Nature ◽  
Systematic Understanding ◽  
Management Approaches ◽  
The One ◽  
Critical Competencies

Mass housing projects (MHPs) are said to differ significantly from the “one-off” traditional building projects often encountered in the construction industry and thus require unique management skills and approach in MHPs delivery. This unique nature of MHPs contributes to managerial inefficiencies that result in delivery failures when management approaches are not adapted to the project characteristics. However, understanding and knowledge of the unique attributes of MHPs are critical towards improving the organisation, planning, managerial effectiveness, and delivery success of mass housing projects. To date, extensive studies establishing the unique features of mass housing projects are lacking. This study is set out to identify what constitutes the unique features of mass housing projects by comparing mass housing projects to traditional “one-off” building projects. A questionnaire survey was used to establish mass housing practitioners’ perception of the unique characteristics of MHPs. Data analysis involving mean scores and ANOVA revealed 10 unique features of MHP. A clear and systematic understanding of these unique features of MHPs is crucial for evolving effective project management practices and critical competencies towards successful delivery of current and future MHPs.

scholarly journals Where does implementation lie? Assessing the determinants of delegation and discretion in post-Maastricht European Union

2020 ◽  
pp. 1-22
Author(s):  
Marta Migliorati
Keyword(s):  
European Union ◽  
Majority Voting ◽  
The European Union ◽  
Data Set ◽  
Several Variables ◽  
Qualified Majority ◽  
The One ◽  
Council Of Ministers ◽  
The Impact ◽  
Selection Of

Abstract Drawing on a principal–agent framework the article analyses the European Union (EU) politics of delegation in the post-Maastricht era. By means of statistical analysis, it tests the impact of several variables upon the selection of national and supranational agents, as well as on the discretion they enjoy, on the basis of a recently collected data set of EU laws. Findings reveal that pooling and policy complexity favour the involvement of supranational actors in the implementation of EU laws. Moreover, the degree of supranational integration of a policy affects the likelihood of choosing supranational implementers. On the one hand, the Commission enjoys higher discretion vis-à-vis national actors when qualified majority voting applies, and when higher levels of conflict in the Council of Ministers is present. On the other, conflict between the European Parliament and the Council under codecision seems associated with lower supranational discretion, although the result needs further corroboration.

Laboratory Analysis for Investigating the Impact of Compaction on the Properties of Pervious Concrete Mixtures for Road Pavements

2013 ◽  
Vol 723 ◽  
pp. 409-419 ◽  
Author(s):  
Alessandra Bonicelli ◽  
Maurizio Crispino ◽  
Filippo Giustozzi ◽  
Melanie Shink
Keyword(s):  
Mechanical Performance ◽  
Pervious Concrete ◽  
Roller Compaction ◽  
High Permeability ◽  
Concrete Mixtures ◽  
Depth Analysis ◽  
New Material ◽  
Compaction Energy ◽  
The One ◽  
The Impact

Pervious concrete is a relatively new material, standards and rigorous specifications for construction and placement are therefore still missing. One the one hand, the main characteristic to achieve is a high permeability to allow meteoric water percolate in the pavement and evaporate from the subgrade. On the other hand, developing pavement cementitious mixtures able to retain high void contents and reach significant mechanical performance entails an in-depth analysis of materials and construction practices. Pervious concrete can indeed be placed using a standard paver as for asphalt mixtures but the compaction stage is usually demanded to the contractor practices: light steel hand-rollers or standard drum rollers are both used without an in-depth knowledge of compaction properties of the cementitious mixture. The present paper aims at investigating the influence of compaction methods on the mechanical performance and void contents of pervious concrete mixtures. Several compaction procedures were tested modifying the compaction energy and the mixture characteristics while preserving high permeability. The main objective was to simulate and identify the effect of commonly adopted in situ compaction techniques - i.e.: tamper compaction as provided by the paver, steel hand-roller compaction, or standard drum roller compaction. Results showed how the compaction energy, water/cement ratios, and the percentage of cement affect the Indirect Tensile Strength and void contents of the mixtures. Further investigations were also conducted in order to comprehensively evaluate how the variation in the percentage of cement and water/cement ratio influenced the stiffness of the material.

scholarly journals Analisa pemilihan supplier dengan metode Analytic Hierarchy Process: Kasus Perusahaan Otomotif di Sunter

2019 ◽  
Vol 11 (3) ◽  
pp. 322
Author(s):  
Estu Adi Sambudi
Keyword(s):  
Analytic Hierarchy Process ◽  
Process Model ◽  
Raw Materials ◽  
Ahp Method ◽  
Analytic Hierarchy ◽  
Automotive Manufacturing ◽  
The One ◽  
Hierarchy Process ◽  
A Company ◽  
Selection Of

The selection of a competent supplier is the one important factor to be able to compete with other companies. PT. XYZ, a company located in Sunter, is engaged in automotive manufacturing. In the period of 2017 PT. XYZ has several lines stop due to several factors, such as the delivery of raw materials which is often late, resulting in the availability of raw materials on the production line is less, incompatibility the goods compared to the specifications. Eight of them are stamping suppliers. The purpose of this study is to design an AHP (Analytic Hierarchy Process) model that can be used to determine the criteria and the score of that, also determine the alternative suppliers which are the main priority in selecting supplier stamping.  Based on the data processing using the AHP method, obtained 5 criteria, Quality, price, delivery, capability, and service. The highest criteria’s value is quality with score 30%. While the priority of stamping supplier is PT C (12,49) and PT E is the supplier which is not prioritized because it is in the lowest position (5,68).

scholarly journals Community-acquired pneumonia: selection of empirical treatment and sequential therapy. SARS-CoV-2 implications Juan González del Castillo, Agustín Julián Jiménez, Francisco Javier Candel

2021 ◽  
Author(s):  
Juan González del Castillo ◽  
◽  
Agustín Julián-Jiménez ◽  
Francisco Javier Candel
Keyword(s):  
Decision Making ◽  
Antibiotic Treatment ◽  
Ecological Impact ◽  
Sequential Therapy ◽  
Developed Countries ◽  
Community Acquired Pneumonia ◽  
Beta Lactams ◽  
The One ◽  
The Impact ◽  
Selection Of

Pneumonia is a major cause of global mortality in developed countries. The adequacy of the antibiotic treatment is essential for the good evolution of the patients. When selecting the antimicrobial, the severity of the patient, the characteristics of the antibiotics, and the profile of the patient to be treated should be considered. Recommendations for the selection of antibiotic treatment may differ between the patient who requires admission and the one who can be treated as outpatient. Beta-lactams, fluoroquinolones, and macrolides are the most widely used antimicrobials in this last circumstance. However, not all are the same in terms of efficacy, safety and ecological impact. This review delves into the aforementioned aspects to improve decision-making and offers concrete recommendations for the selection of antibiotic treatment. Likewise, it includes recommendations for performing sequential therapy. Finally, a brief review is made about the impact of SARS-CoV-2 infection on this pathology.

scholarly journals The impact of viewer’s emotional tension on the choice of films

2016 ◽  
Vol 7 (3) ◽  
pp. 121-134 ◽  
Author(s):  
N.G. Voskresenskaya
Keyword(s):  
Time Perspective ◽  
Social Needs ◽  
Subjective Perception ◽  
Voluntary Attention ◽  
Temporal Perspective ◽  
The Moment ◽  
The One ◽  
The Impact ◽  
Selection Of ◽  
Stimulation Of

The author analyses peculiarities of choices of motion pictures with different dy- namic characteristics, taking into consideration spectator’s subjective perception of in- tenseness of his or her life in time perspective. The student participants were offered a choice of 16 films from which they were required to select the one they would prefer to watch at the moment. The film set was formed based on the ratings of films that are popular amongst students, in which survey 187 students participated. The selected films differed in terms of temporal and dynamic characteristics, and they were famil- iar to all the 60 participants in the sample. The students were also required to rate the fullness of their life in temporal perspective. The analysis of the data revealed that the film preference appears to be compensatory in nature. The perception of one’s life as boring and barren determines the choice of dynamic films with stimulation of forced attention by means of attention reflex and actualization of basic needs. The percep- tion of one's life as dynamic and full of new experiences contributes to the selection of circumstantial cinematic narrative and stimulation of voluntary attention through actualization of social needs.

scholarly journals Selection of the best consultant for SAP ERP project using combined AHP-IBA approach

2014 ◽  
Vol 24 (3) ◽  
pp. 383-398 ◽  
Author(s):  
Natasa Martinovic ◽  
Boris Delibasic
Keyword(s):  
Project Manager ◽  
Multiple Criteria ◽  
Multiple Criteria Decision Analysis ◽  
Decision Making Process ◽  
Ahp Method ◽  
Analytic Hierarchy ◽  
Criteria Weights ◽  
The One ◽  
Hierarchy Process ◽  
Selection Of

In this paper we propose a combined AHP-IBA model for selecting the best SAP consultant for an SAP ERP project. The goal of the SAP Project Manager is to choose the best consultant, the one who is able to implement standard SAP functionalities with quality and on time. When making a decision on the basis of multiple criteria, the traditional Analytic Hierarchy Process (AHP) method does not take into account the fact that attributes may correlate, assuming that there are no dependencies between them. However, the dependencies of the attributes can often be used to model important knowledge for multiple criteria decision analysis. We propose an extension to the traditional AHP method by applying Interpolative realization of Boolean algebra (IBA), using AHP to determine the criteria weights, and IBA to model the logical interactions among criteria. The research conducted on ERP consultant selection suggests that the decision making process is modelled more accurately if logical interactions between attributes are modelled before applying AHP.

Component-level failure analysis using multi-criteria hybrid approach to ensure reliable operation of wind turbines

2021 ◽  
pp. 0309524X2110039
Author(s):  
Hazem Kaylani ◽  
Ammar Alkhalidi ◽  
Fayez Al-Oran ◽  
Qutaiba Alhababsah
Keyword(s):  
Wind Turbine ◽  
Wind Turbines ◽  
Failure Modes ◽  
Hybrid Approach ◽  
Reliable Operation ◽  
Component Level ◽  
Analytic Hierarchy ◽  
The Impact ◽  
Hierarchy Process ◽  
Selection Of

Wind turbines are made of several electrical and mechanical components that are subject to several types of failures. Thus, the proper assessment of different failure modes and the selection of proper corrective actions will ensure the continuous and reliable functionality of wind turbines. In this research, the authors introduce a combined hybrid “Failure Modes and Effects Analysis” and “Analytic Hierarchy Process” (FMEA-AHP) method. This hybrid approach will be used to identify and analyze failure risk factors of wind turbine components. Firstly, FMEA is used to assess the impact of each component failure. Secondly, AHP is used to prioritize the severity of failures and the best measures aiming to reduce the risk of individual failures. The proposed measures, in this article, will enhance reliability and reduce operational costs of power generation using a wind turbine.

Note on Selection of Coordinate Systems for Geodynamics

1975 ◽  
Vol 26 ◽  
pp. 395-407
Author(s):  
S. Henriksen
Keyword(s):  
Sea Level ◽  
The Other ◽  
Coordinate Systems ◽  
Mean Sea Level ◽  
The Earth ◽  
The One ◽  
Static Systems ◽  
Selection Of

The first question to be answered, in seeking coordinate systems for geodynamics, is: what is geodynamics? The answer is, of course, that geodynamics is that part of geophysics which is concerned with movements of the Earth, as opposed to geostatics which is the physics of the stationary Earth. But as far as we know, there is no stationary Earth – epur sic monere. So geodynamics is actually coextensive with geophysics, and coordinate systems suitable for the one should be suitable for the other. At the present time, there are not many coordinate systems, if any, that can be identified with a static Earth. Certainly the only coordinate of aeronomic (atmospheric) interest is the height, and this is usually either as geodynamic height or as pressure. In oceanology, the most important coordinate is depth, and this, like heights in the atmosphere, is expressed as metric depth from mean sea level, as geodynamic depth, or as pressure. Only for the earth do we find “static” systems in use, ana even here there is real question as to whether the systems are dynamic or static. So it would seem that our answer to the question, of what kind, of coordinate systems are we seeking, must be that we are looking for the same systems as are used in geophysics, and these systems are dynamic in nature already – that is, their definition involvestime.

Sign in / Sign up

Export Citation Format

Share Document