scholarly journals A Control Model for Reinforced Concrete Work Materials on the Construction of Duta Mall 2

2020 ◽  
Vol 10 (2) ◽  
pp. 5483-5486
Author(s):  
S. Daslim ◽  
A. Mursadin
Keyword(s):  
Reinforced Concrete ◽  
Steel Wire ◽  
Dominant Factor ◽  
Control Procedure ◽  
Linear Regression Models ◽  
Existing Building ◽  
Material Volume ◽  
Model Equations ◽  
The Cost ◽  
Cost Aspect

Controlling is a crucial stage in achieving a project target, covering aspects of cost, quality, and time. In the construction industry, the cost aspect is often the main focus. The project of Duta Mall 2 (DM 2) is the development of an existing building and the cost aspect is a major concern to the owner. Dynamic internal and external factors of the DM 2 project cause the project control to be quite difficult, with the materials becoming the most dominant factor in construction cost. Cost control starts from reinforced concrete work materials, consisting of ready mixed concrete, concrete steel, wire, plywood, timber, and nails. Bad control of material purchasing can lead to cost escalation, degradation of material quality, and impact on the execution schedule of works. This research was conducted to obtain quantitative correlations between material components based on reinforced concrete works material supply data. From these data, some linear regression models can be designed to obtain a more accurate and effective prediction of material volume needs in the future. Model equations can be applied to control material demand, measure waste, reference of material volume in arranging the project cost budget, in addition to the process in the control procedure of the request for goods (materials and equipment).

Adhering to a Mediterranean diet in a Mediterranean country: an excess cost for families?

2021 ◽  
pp. 1-24
Author(s):  
Ricardo Alves ◽  
Carla Lopes ◽  
Sara Rodrigues ◽  
Julian Perelman
Keyword(s):  
Mediterranean Diet ◽  
Food Group ◽  
Food Prices ◽  
Mediterranean Country ◽  
Linear Regression Models ◽  
Middle Income ◽  
Diet Cost ◽  
The Mediterranean ◽  
The Cost ◽  
Activity Survey

Abstract Background: Adherence to the Mediterranean diet has been decreasing in southern Europe, which could be linked to several cultural or educational factors. Our aim is to evaluate the extent to which economic aspects may also play a role, exploring the relationship between food prices in Portugal and adherence to the Mediterranean diet. Methods: We evaluated data from the Portuguese National Food, Nutrition, and Physical Activity Survey (IAN-AF 2015-2016) (n=3,591). Diet expenditures were estimated by attributing a retail price to each food group and the diet was transposed into the Mediterranean Diet Score used in the literature. Prices were gathered from five supermarket chains (65% of the Portuguese market share). Linear regression models were used to assess the association between different adherence levels to the MD levels and dietary costs. Results: Greater adherence to the MD was associated with a 21.2% (p< 0.05) rise in total dietary cost, which accounts for more 0.59€ in mean daily costs when compared with low adherence. High adherence individuals (vs. low adherence) had higher absolute mean daily costs with fish (0.62€/+285.8%; p< 0.05), fruits (0.26€/+115.8%; p< 0.05), and vegetables (0.10€/+100.9%; p< 0.05). The analysis stratified by education and income level showed significantly higher mean daily diet cost only amongst higher income groups. Conclusions: Our findings suggest that greater adherence to the MD was positively and significantly associated with higher total dietary cost. Policies to improve population’s diet should take into consideration the cost of healthy foods, especially for large low- and middle-income families.

scholarly journals Optimal Renovation Strategies through Life-Cycle Analysis in a Pilot Building Located in a Mild Mediterranean Climate

2021 ◽  
Vol 11 (4) ◽  
pp. 1423
Author(s):  
José Manuel Salmerón Lissen ◽  
Cristina Isabel Jareño Escudero ◽  
Francisco José Sánchez de la Flor ◽  
Miriam Navarro Escudero ◽  
Theoni Karlessi ◽  
...  
Keyword(s):  
Life Cycle ◽  
Life Cycle Cost ◽  
Mediterranean Climate ◽  
Building Envelope ◽  
Economic Life ◽  
Hot Water ◽  
Optimal Solutions ◽  
Building Stock ◽  
Existing Building ◽  
The Cost

The 2030 climate and energy framework includes EU-wide targets and policy objectives for the period 2021–2030 of (1) at least 55% cuts in greenhouse gas emissions (from 1990 levels); (2) at least 32% share for renewable energy; and (3) at least 32.5% improvement in energy efficiency. In this context, the methodology of the cost-optimal level from the life-cycle cost approach has been applied to calculate the cost of renovating the existing building stock in Europe. The aim of this research is to analyze a pilot building using the cost-optimal methodology to determine the renovation measures that lead to the lowest life-cycle cost during the estimated economic life of the building. The case under study is an apartment building located in a mild Mediterranean climate (Castellon, SP). A package of 12 optimal solutions has been obtained to show the importance of the choice of the elements and systems for renovating building envelopes and how energy and economic aspects influence this choice. Simulations have shown that these packages of optimal solutions (different configurations for the building envelope, thermal bridges, airtightness and ventilation, and domestic hot water production systems) can provide savings in the primary energy consumption of up to 60%.

Transaction Cost and Resource-Based Explanations of Joint Ventures: A Comparison and Synthesis

2000 ◽  
Vol 21 (1) ◽  
pp. 215-242 ◽  
Author(s):  
Eric W.K. Tsang
Keyword(s):  
Transaction Cost ◽  
Joint Ventures ◽  
Market Failure ◽  
Transaction Cost Theory ◽  
Intermediate Inputs ◽  
The Cost ◽  
Theoretical Pluralism ◽  
Monitoring Performance ◽  
High Uncertainty ◽  
Cost Aspect

Transaction cost theory has been the dominant theoretical lens used in the study of joint ventures. The purpose of this paper is to explain the formation of joint ventures from the resource-based perspective and to compare this perspective with transaction cost theory. By focusing on the cost aspect of a transaction, the transaction cost logic explains joint ventures in terms of market failure for intermediate inputs, asset specificity, and high uncertainty over specifying and monitoring performance. Putting more emphasis on the benefit side of a transaction, resource-based theory regards joint ventures as a means of exploiting and developing a firm's resources. The transaction cost and resource-based explanations are, to a certain extent, complementary. Taking the stance of theoretical pluralism, an attempt is made to synthesize the two theories into a more comprehensive perspective which takes both costs and benefits into account.

scholarly journals Hubungan Kualitas Pelayanan Dimensi Servqual dengan Loyalitas Pasien di Poliklinik RSUD Arosuka Tahun 2018

2019 ◽  
Vol 19 (3) ◽  
pp. 694
Author(s):  
Titen Yasril ◽  
Dachriyanus Dachriyanus ◽  
Harmawati Harmawati
Keyword(s):  
Sampling Technique ◽  
Dominant Factor ◽  
Chi Square ◽  
Waiting Room ◽  
Cross Sectional ◽  
Old Patients ◽  
A Value ◽  
Patient Loyalty ◽  
Chi Square Test ◽  
The Cost

The lack of repeated visits of old patients will increase the cost of promotion to get new patients, one way to maintain old patients is to grow patient loyalty. Some patients in Arosuka General Hospital are still not loyal because they come to the hospital only for the first examination, then the patient goes to another hospital, some patients have not recommended the hospital to others, one of the factors that influence patient loyalty is the quality of service. This study aims to determine the relationship between service quality servqual dimensions and patient loyalty in Arosuka Hospital. The type of this study is cross sectional. The population in this study were all patients who came to the Arosuka Hospital polyclinic in 2018, a sample of 203 people with a proportional random sampling sampling technique conducted in April 2018 with the analysis used was the chi square test. The statistical test results obtained 60.1% of respondents not loyal, 61.6% of respondents stated that tangible was not good, 37.9% of respondents stated that reliability was not good, 51.2% of respondents stated that they were less responsive, 43.3% of respondents said assurace was not good, and 48.8% of respondents said empaty not good. There is a significant relationship between tangible, reliability, responsive, assurance, empathy and patient loyalty in Arosuka Hospital with a value of p <0.05 (p = 0.001, p = 0.015, p = 0.010, p = 0.002, p = 0.022). Tangible is the most dominant factor associated with patient loyalty. It is expected that the director will make a policy on service hours, sanctions for those who do not obey the service hours, coordinate with the local government in procuring transportation for patients, the head of the ward designing a comfortable waiting room, and providing suggestion boxes for patients.

scholarly journals Characterisation of the Lateral Resistance of Stapled Shear Walls

2019 ◽  
pp. 446-453
Author(s):  
Roberto Aranda ◽  
Alexander Salenikovich ◽  
J. Daniel Dolan ◽  
Peter Dechent
Keyword(s):  
Steel Wire ◽  
Cost Savings ◽  
Shear Walls ◽  
Lateral Force ◽  
Production Quality ◽  
Production Quality Control ◽  
Design Information ◽  
Displacement Capacity ◽  
Wood Construction ◽  
The Cost

Shear walls are the major components of the lateral-force-resisting system (LFRS) in light-frame wood buildings. With the growing popularity of mid-rise prefabricated light-frame wood construction, engineers need basic design information on the shear walls to design and produce safe structures in case of high winds and earthquakes. The racking resistance of light-frame shear walls depends on many factors, including sheathing and hold-down devices and, most importantly, sheathing-to-framing fastenings. While the performance of nailed shear walls has been studied extensively, and design information is included in the design codes, there is little information on stapled shear walls, specifically in the US and Canada. The cost of staples is significantly less than that of equivalent nails; hence, the use of staples instead of nails would allow cost savings in mass production if they provide sufficient resistance and displacement capacity in the engineered shear walls. This paper presents the results of a pilot study which was focused on the comparison of the performance of nailed and stapled shear walls in laboratory tests under monotonic and cyclic loading in accordance with ASTM E564 and E2126, respectively. Several series of tests were performed on 2.4-m (8-ft) square shear walls with 11-mm (7/16-in) OSB sheathing with various hold-downs and various spacing of sheathing staples and nails on the perimeter of the sheathing panels (5-cm (2-in), 10-cm (4-in) and 15-cm (6-in)) and 19-mm and 10-mm edge distances. The staples were 16-gauge (50-mm (2-in) long with 11-mm (7/16-in) crown). The nails were 8d box steel wire nails (63-mm (2½-in) long with 2.87-mm (0.113-in) diameter). The test results revealed a similar performance of the nailed and stapled shear walls, and the need for careful detailing. Therefore, prefabrication of walls in the factory settings is preferable to the on-site construction to allow the production quality control.

scholarly journals Tagging Oil-Residues in Tankers with Microparticles

1973 ◽  
Vol 1973 (1) ◽  
pp. 87-90
Author(s):  
P. O. Agnedal
Keyword(s):  
Field Experiment ◽  
Oil Spills ◽  
Metal Particles ◽  
Oil Transport ◽  
Oil Water ◽  
Preliminary Study ◽  
Set Up ◽  
The Baltic ◽  
The Cost ◽  
Cost Aspect

ABSTRACT The increase in pollution by oil spills in the Baltic has lead to the Minister of Transport to set up a committee with the task to find methods for identifying ships responsible for oil spills. A preliminary study of the oil transport situation in Sweden had shown that the fingerprint method for identification will be difficult to use. The study also showed that microparticles of plastic and metal as tags might be used. In most cases the oil spills in the Baltic are due to pumping out residues mixed with ballast. In the present paper the merits of different methods for tagging these residues, including the cost aspect, are treated as well as identification of recovered oil samples. In a field experiment the oil residues in a tanker were tagged. Some of its tanks were tagged with plastic particles and some with metal particles. The tanks were treated in different ways for cleaning and the oil-water mixtures were then pumped out in the sea under controlled conditions. The different spills were kept inside an enclosure for a fortnight and samples were taken every day. In all analysed samples the tagged substance could be recovered and identified. A plan for testing this method on a larger scale is under preparation.

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