scholarly journals Construction Work Cost Determination

2018 ◽  
Vol 7 (3.2) ◽  
pp. 169
Author(s):  
Оlena Koba ◽  
Yulia Myronova ◽  
Volodymyr Byba
Keyword(s):  
Conceptual Model ◽  
Construction Industry ◽  
Model Construction ◽  
Alternative Methods ◽  
Practical Application ◽  
Construction Work ◽  
Cost Calculations ◽  
Cost Determination

The main Ukraine construction industry tendencies during 2010-2017 are described in the article. The order of construction and installation work formation is determined. The practical application peculiarities of cost calculations traditional and alternative methods in construction industry are considered. Based on the principles, methods and tools created a new conceptual model construction work cost determination.  

Development of Conceptual Model for Uncertainty Management on Project Completion Late Delivery in Environmental Issues

2014 ◽  
Vol 666 ◽  
pp. 363-370 ◽  
Author(s):  
Baharum Zirawani ◽  
M. Ngadiman Salihin ◽  
H. Mustaffa Noorfa
Keyword(s):  
Conceptual Model ◽  
Construction Industry ◽  
Time Management ◽  
Uncertainty Modeling ◽  
Environmental Issues ◽  
Fractional Factorial ◽  
Project Completion ◽  
Uncertainty Model ◽  
Late Delivery ◽  
Water Supply Company

The construction industry has many underlying causes of uncertainty that impact on late delivery of project completion's performance as well as in time management. Most of researchers proposed a modelling and simulation techniques to solve these uncertainties problem nevertheless not tackling the uncertainty in environmental issues (EI). Yet, the environmental issues were also leading significant deviations for project completion performance, which means it is important to be studied. Therefore, the comprehensive sturvey is discussed in this paper in purpose to develop the uncertainty modeling model on late delivery in environmental issues. The development of conceptual model through a comprehensive survey involving piping's construction industry for water supply company with multi-project construction environment is developed to show the relationship for each cause and affects that underlying uncertainty on late project delivery in environmental issues. Further research is to verify and validate the conceptual model as has been analyzed through fractional factorial design with ANOVA, through the development of uncertainty model via modeling and simulation using MATLAB.

scholarly journals Value Management in Practice: An Interview Survey

2012 ◽  
Vol 4 (2) ◽  
pp. 11-18 ◽  
Author(s):  
Therese Daddow ◽  
Martin Skitmore
Keyword(s):  
Construction Industry ◽  
Construction Projects ◽  
Project Delivery ◽  
Value Management ◽  
Practical Implementation ◽  
Construction Work ◽  
Value For Money ◽  
Extra Time ◽  
Prescriptive Literature ◽  
Interview Survey

Despite its obvious theoretical benefits, there has been some reservations regarding the practical implementation of Value Management (VM) for construction projects. In particular, these concerns the extra time and costs involved in conducting VM in relation to the actual benefits gained as a consequence of its use. This paper provides the result of an interview survey of the experiences and observations of 17 professionals working in the property and construction industry to establish the extent to which this is an issue. The main conclusion is that the process is working well, with VM being popular among those with experience in its use - which has been extended into the area of consultant selection. However, in contrast with the prescriptive literature, much of the participants' experiences appear to be more concerned with VM's contribution to the identification and management of the risks involved in project delivery than the straight value-for-money aspects. This may be due to the higher levels of uncertainty involved in construction work than in VM's original use in construction.

scholarly journals What Drives Consumer’s Intention to use Online Property Websites: A Conceptual Model

2018 ◽  
pp. 630-633
Keyword(s):  
Real Estate ◽  
Conceptual Model ◽  
Construction Industry ◽  
Real Estate Market ◽  
Future Research ◽  
Intention To Use ◽  
The Real Estate ◽  
Proposed Model ◽  
The Real Estate Market ◽  
Conceptual Paper

The real estate market in Malaysia is growing as the nation grows more prosperous. There were 376,583 transactions recorded in Malaysia in 2010 with an aggregate worth RM107.44 billion (Construction Industry Development ,2016). This study intends to inspect the factors that drive consumer’s intention to use online property website. Previous literature does not include in-depth analyses such as consumer behavior. Hence, this conceptual paper proposes a model the key constructs that determine consumers’ intention to use online property website based on the Stimulus-Organism-Response (S-O-R) model. The proposed model integrates the S-O-R model with atmospheric cues from websites such as informativeness, effectiveness and entertainment. The results of the study provide significant insights the phenomenon of using online property ads and factors that influence consumers’ intention regarding online property websites. Recommendations for future research are also presented.

scholarly journals SELF-COMPACTING CONCRETE USE FOR CONSTRUCTION WORK ENVIRONMENT SUSTAINABILITY

2012 ◽  
Vol 18 (5) ◽  
pp. 724-734 ◽  
Author(s):  
Romuald Rwamamara ◽  
Peter Simonsson
Keyword(s):  
Work Environment ◽  
Construction Industry ◽  
Musculoskeletal Injury ◽  
Construction Work ◽  
Casting Method ◽  
Self Compacting Concrete ◽  
Work Activity ◽  
Work Related ◽  
Work Tasks ◽  
Concrete Casting

Many of those working on construction sites are exposed to demanding work loads; construction workers lift and carry heavy materials and work in awkward postures. Occupational injuries and accidents due to poor ergonomics are more common in the construction industry and many times lead to human tragedies, disrupt construction processes and adversely affect the cost, productivity, and the reputation of the construction industry. In Sweden, it is reported that concrete workers have the highest relative work-related musculoskeletal injury frequency. Therefore, the use of ergonomic production methods to prevent this can have a significant human, social and financial impact. Research introduced here presents a case study of comparative analyses of ergonomic situations for concrete workers performing concrete casting processes. Three different ergonomic risk assessment methods were used to assess the physical strain, hand-arm vibration and noise affects risks involved in concrete casting work tasks. The combination of technical and managerial factors results in a system where workers are as efficient and safe as possible during their work tasks, and thus, makes the construction work environment sustainable. The aim of our research is to find practical methods to evaluate and compare two different concrete casting methods from an ergonomic perspective. The focus is on the production of cast-in-place concrete bridge constructions where the traditional concrete casting method is compared with the SCC (Self-Compacting concrete) casting method. To be able to identify work-related musculoskeletal injury risks due to concrete casting work tasks, QEC (Quick Exposure Check for musculoskeletal risks), PLIBEL (Checklist for identification for Ergonomics Hazards) and ErgoSAM (Ergonomic production technology method) methods were used. Ergonomic risks analysis methods QEC, PLIBEL and ErgoSAM have all shown capabilities to evaluate construction work activities and thus determine whether a construction work activity constitutes a musculoskeletal risk to the worker or not before any ergonomic intervention is introduced. As a result the present ergonomic risks emanating from work methods used in the traditional concrete placing can be significantly reduced with the use of self-compacting concrete (SCC) that eliminates awkward work postures, noise and hand arm vibration, thereby reducing if not eliminating musculoskeletal injuries among concrete workers during their concrete casting work tasks.

scholarly journals Construction safety performance assessment on construction site through frequency adjusted importance index in Tangerang Selatan

2019 ◽  
Vol 276 ◽  
pp. 02021
Author(s):  
Ferdinand Fassa ◽  
Irma Paramita Sofia
Keyword(s):  
Construction Industry ◽  
Safety Issue ◽  
Rapid Development ◽  
Construction Project ◽  
Safety Training ◽  
Construction Site ◽  
Construction Work ◽  
Importance Index ◽  
The Subject ◽  
Project Site

The construction industry has a huge contribution to economic growth in the world, including Indonesia. Massive urban development occurs as a result of significant population growth. Along with the rapid development, safety issue in the construction site is often neglected. In 2017, there were found that more than 123 thousand cases of construction site accidents have happened. This numbers has increased by almost 20% compared with the number of accidents in 2016. The purpose of this study is to identify significant safety indicators affecting the construction project in Tangerang Selatan. Based on the literature review, a list of 22 safety indicators was produced. These indicators were used in the questionnaire. The main contribution of this paper is providing safety indicators ranking that affects construction work around Tangerang Selatan. The subject of this research includes contractor and consultant experts who work in construction project around Tangerang Selatan. From the survey, we obtained 41 valid responses which then were analyzed using FAII. As a result, we found that the indicator “the company provides safety training for each worker to act safely” has been considered as the most important safety indicator. It is followed by “the contractor always provides PPE such as helmets, boots, gloves, masks, and other tools that can get me out of an accident”. Then the third result is “there are safeguards on the project site; safety signs, fire extinguishers, and security fences”.

scholarly journals Direct application of an ECG-based sleep staging algorithm on reflective photoplethysmography data decreases performance

2020 ◽  
Vol 13 (1) ◽  
Author(s):  
M. M. van Gilst ◽  
B. M. Wulterkens ◽  
P. Fonseca ◽  
M. Radha ◽  
M. Ross ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Direct Application ◽  
Alternative Methods ◽  
Sleep Staging ◽  
Practical Application ◽  
Sleep Monitoring ◽  
Data Source ◽  
Variability Data ◽  
Ecg Data

Abstract Objective The maturation of neural network-based techniques in combination with the availability of large sleep datasets has increased the interest in alternative methods of sleep monitoring. For unobtrusive sleep staging, the most promising algorithms are based on heart rate variability computed from inter-beat intervals (IBIs) derived from ECG-data. The practical application of these algorithms is even more promising when alternative ways of obtaining IBIs, such as wrist-worn photoplethysmography (PPG) can be used. However, studies validating sleep staging algorithms directly on PPG-based data are limited. Results We applied an automatic sleep staging algorithm trained and validated on ECG-data directly on inter-beat intervals derived from a wrist-worn PPG sensor, in 389 polysomnographic recordings of patients with a variety of sleep disorders. While the algorithm reached moderate agreement with gold standard polysomnography, the performance was significantly lower when applied on PPG- versus ECG-derived heart rate variability data (kappa 0.56 versus 0.60, p < 0.001; accuracy 73.0% versus 75.9% p < 0.001). These results show that direct application of an algorithm on a different source of data may negatively affect performance. Algorithms need to be validated using each data source and re-training should be considered whenever possible.

Measuring customer value co-creation behavior

2017 ◽  
Vol 27 (5) ◽  
pp. 930-950 ◽  
Author(s):  
Aurelio Tommasetti ◽  
Orlando Troisi ◽  
Massimiliano Vesci
Keyword(s):  
Conceptual Model ◽  
Customer Value ◽  
Design Methodology ◽  
Future Research ◽  
Practical Application ◽  
Content Type ◽  
Dominant Logic ◽  
Measurement Framework ◽  
Information Research ◽  
Comprehensive Framework

Purpose In line with the precepts of service-dominant logic (SDL), the purpose of this paper is to devise a measurement framework of customer value co-creation practices during the service process. Design/methodology/approach Answering the call of McColl-Kennedy et al. (2012), the present study develops a general conceptual model for the measurement of customer value co-creation behavior, in line with the procedure elaborated by Churchill (1979). In particular, the paper focuses on the first stage of the protocol, corresponding to the specification of the domain of the construct. Findings The study shows that the scale for measuring behavioral processes in customer value co-creation has an implicit hierarchical structure based on eight activities to ensure adequate semantic coverage of the concept: cerebral activities, cooperation, information research and collation, the combination of complementary activities, changes in habits, co-production, co-learning, and connection. Moreover, the work highlights that the analysis of customer value co-creation behavior leads to three diverse steps of value co-creation and various levels of interaction. Originality/value By systematizing the construct of customer value co-creation behavior within a comprehensive framework, the conceptual model attempts to fill a gap evidenced by previous research in order to show that actions performed by users during the value co-creation process strictly conform to SDL assumptions. Moreover, the framework underpinning the practical application of SDL principles could benefit future practitioners and suggest interesting implications for future research.

The Conceptual Model of Uncertainty Factors in Environmental Issues on late Delivery for Construction Industry

2012 ◽  
Vol 610-613 ◽  
pp. 2889-2896 ◽  
Author(s):  
Zirawani Baharum ◽  
Ngadiman M. Salihin ◽  
Noorfa Haszlinna Mustaffa
Keyword(s):  
Conceptual Model ◽  
Construction Industry ◽  
Environmental Issues ◽  
Decision Makers ◽  
Uncertainty Factors ◽  
The Real ◽  
Project Completion ◽  
Late Delivery ◽  
Acts Of God

Every industry keen to maximize their company profit by fulfils the customer’s satisfaction by perform a very good project deliverable. However, very limited researches on uncertainty in environmental issues (EI) probably could turn as a biggest problem for company, especially in late delivery of project completion for construction industry (CI). Uncertainty factors could be mapped by many causes and affects which known or unknown, statically to totally ignorance. Previously, most of research on uncertainty have been model their factors of uncertainties but pay no attention to the EI, whereas in the real cases all the factors must controlled and manageable even it is in-deterministic or non-realistic. Therefore, the modelling of uncertainty factors in EI on late delivery for CI is very important to studied, and it will be considered to be used as the guidance for decision makers when they are facing of the problems that related to uncertainties. This paper will purpose the conceptual model on progress to the modelling of uncertainty factors in EI on late delivery for CI. The uncertainty of environmental can split into two categories; acts of God and acts of humans.

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