The role of factor and activity-based models in offshore operating cost estimation

2019 ◽  
Vol 174 ◽  
pp. 1062-1092 ◽  
Author(s):  
Mark J. Kaiser
Keyword(s):  
Cost Estimation ◽  
Operating Cost

scholarly journals Revisiting a Funding Model for University-led Dental Clinics: The Case of Complete Denture Fabrication Case of Complete Denture Fabrication

2020 ◽  
Vol 27 (2) ◽  
Author(s):  
Rohana Ahmad ◽  
◽  
Nur Amalina Zul ◽  
Siti Anisah Mohtar ◽  
Marc Tennant ◽  
...  
Keyword(s):  
Cost Estimation ◽  
Operating Cost ◽  
Complete Denture ◽  
Government Support ◽  
Patient Records ◽  
Complete Dentures ◽  
Total Cost ◽  
Dental Clinics ◽  
Dental Instruments ◽  
Number Of Visits

Objectives: University-led dental clinics are rarely seen as core to the national healthcare system. Thus, when publicly funded universities experience a decline in government support, dental clinic services operated by students are confronted by a potentially inadequate operating budget. Prompted by the need for strategic resource allocation, this study seeks to quantify the resources consumed in the construction of complete dentures by undergraduate students in an effort to identify opportunities for cost-cutting measures. Methods: Clinical cases were retrieved from the logbooks of graduating students of Class 2015, and patient records were reviewed to identify and quantify all clinical and laboratory procedures involved in constructing a set of complete dentures. Cost estimation was carried out using the activity-based method on the basis of direct medical costs. Results: A total of 83 patient records were reviewed. The average number of visits required to fabricate a set of complete dentures was 10 (range, 6–20 visits) with an average total cost of MYR2131±538 (€450±114). The number of visits contributed substantially to the total cost, and procedures requiring multiple visits included secondary impression and jaw relation recording. The major cost components were dental equipment (44%), laboratory costs (28%), dental consumables (17%), salaries (7%), and dental instruments (3%). Conclusion: The operating cost for training students in denture fabrication is substantial. Schools should formulate strategies to reduce the number of patient visits by ensuring that students optimize the time spent per visit. A financially sustainable model to fund dental training is necessary to ensure that quality of care is not compromised in university-led clinics.

The Role of Radio Frequency Identification in Modern Libraries

2015 ◽  
pp. 361-385 ◽  
Author(s):  
Kijpokin Kasemsap
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Operating Cost ◽  
Sustainable Competitive Advantage ◽  
Cost Information ◽  
Technology Infrastructure ◽  
Information Technology Infrastructure ◽  
Frequency Identification ◽  
Global Operations

This chapter reveals the role of radio frequency identification (RFID) in modern libraries, thus demonstrating the theoretical and practical concept of RFID; the utilization of RFID in global operations; RFID perspectives in modern libraries (i.e., operating cost, information technology infrastructure cost, skilled RFID workers, access rate, patron policy, data security, barcode factor, and patron issues); the applications of RFID in modern libraries (i.e., data management, circulation, inventory, assistance in searching and orientation, data accuracy and reliability, theft prevention, utilization statistics for serials, and personal service); and the significance of RFID in modern libraries. RFID solutions can be utilized to reduce the operating costs through decreasing labor costs, enhancing automation, improving tracking and tracing, and preventing the loss of materials. Applying the RFID will significantly improve educational performance and gain sustainable competitive advantage in modern libraries.

scholarly journals ESTIMATING CAPITAL AND OPERATIONAL COSTS OF BACKHOE SHOVELS

2012 ◽  
Vol 18 (3) ◽  
pp. 378-385 ◽  
Author(s):  
Ahmad Reza Sayadi ◽  
Ali Lashgari ◽  
Mohammad Majid Fouladgar ◽  
Miroslaw J. Skibniewski
Keyword(s):  
Feasibility Study ◽  
Cost Estimation ◽  
Construction Projects ◽  
Cost Model ◽  
Operating Cost ◽  
Principal Component ◽  
Feasibility Studies ◽  
Project Managers ◽  
Cost Models ◽  
Optimum Type

Material loading is one of the most critical operations in earthmoving projects. A number of different equipment is available for loading operations. Project managers should consider different technical and economic issues at the feasibility study stage and try to select the optimum type and size of equipment fleet, regarding the production needs and project specifications. The backhoe shovel is very popular for digging, loading and flattening tasks. Adequate cost estimation is one of the most critical tasks in feasibility studies of equipment fleet selection. This paper presents two different cost models for the preliminary and detailed feasibility study stages. These models estimate the capital and operating cost of backhoe shovels using uni-variable exponential regression (UVER) as well as multi-variable linear regression (MVLR), based on principal component analysis. The UVER cost model is suitable for quick cost estimation at the early stages of project evaluation, while the MVLR cost function, which is more detailed, can be useful for the feasibility study stage. Independent variables of MVLR include bucket size, digging depth, dump height, weight and power. Model evaluations show that these functions could be a credible tool for cost estimations in prefeasibility and feasibility studies of mining and construction projects.

A model for examining the role of the Internet of Things in the development of e-business

2019 ◽  
Vol 50 (1) ◽  
pp. 20-33 ◽  
Author(s):  
Babak Esmaeilpour Ghouchani ◽  
Susan Jodaki ◽  
Maryam Joudaki ◽  
Alireza Balali ◽  
Lila Rajabion
Keyword(s):  
Internet Of Things ◽  
Operating Cost ◽  
The Internet ◽  
Content Type ◽  
Proposed Model ◽  
It Knowledge ◽  
The Internet Of Things ◽  
Security Of Iot

Purpose Nowadays, the Internet of Things (IoT) offers new intelligent services and business model opportunities by extending the internet connectivity into physical devices and daily objects. Recently, this technology has had a deep impact on all the aspects of human societies from industry to management and business. Therefore, the purpose of this paper is to predict the impact of using IoT services on the development of electronic business (e-business). Design/methodology/approach For evaluating the model’s elements, a questionnaire was designed. It was revised by experts with significant experiences. For statistical analysis, SmartPLS 3.2 is used. Findings The findings have confirmed the validity of the proposed model. The results also have indicated that the quality of IoT services (scalability, availability, reliability and ease of use), security of IoT services (trust, reputation, privacy and encryption) and IT knowledge of users (usage skills, awareness, experience and accuracy) have a positive and significant impact on development of e-business. Furthermore, the obtained results have revealed that the operating cost of IoT services (transmission time, storage capacity, functionality and stability) is significantly influenced by the development of e-business. Research limitations/implications By capturing a number of important factors in the proposed model, this study can provide a significant theoretical influence for researchers in the related area of interest. In fact, this study provides a worthwhile direction by assessing e-business performance, which, so far, has not been well assessed in many developing countries. Practical implications From a practical perspective, the statistical results support the crucial role of the following factors: quality of IoT services, the security of IoT services, operating cost of IoT services and IT knowledge of users. Hence, aspects relating to these factors must be the focus of attention of any organization in their endeavor to development of e-business. Originality/value This study meaningfully contributes to the knowledge and literature by focusing more on development e-business and IoT as original technology for further understanding, investigating other important features and applying advanced statistical analyses technique. By doing so, this study was able to develop the current understanding regarding the main aspects of development e-business and IoT services.

scholarly journals BRIDGE CONSTRUCTION IN BERDIANSK COUNTY OF TAURIDA GOVERNORATE IN THE SECOND HALF OF THE ХІХ CENTURY

2021 ◽  
pp. 45-50
Author(s):  
Liudmyla Zolotar
Keyword(s):  
Cost Estimation ◽  
Significant Contribution ◽  
Transport Infrastructure ◽  
Construction Process ◽  
Bridge Construction ◽  
Local Range ◽  
High Level ◽  
Xix Century ◽  
Very High

The purpose of the article is to cover the local range of problems of bridge construction in Berdiansk county of Taurida Governorate in the second half of the XIX century. The article analyses mechanisms of emergence of infrastructure facilities in Ukraine which was under Russian rule. Moreover, the article reveals prioritization of infrastructure facility emergence in a certain locality, the construction process itself and difficulties in implementation of projects, cost estimation, technical characteristics. In addition, the article investigates the role of zemstvo in development of transport system infrastructure and its influence on county development.  It was found out that bridges were facilities of vital importance for a locality: possibility of conducting trading operations, receiving correspondence, rural-urban communication, but on the technological side bridge construction still wasn't at a very high level. Investigation analysis showed significant contribution of zemstvo into development of transport infrastructure, although counter-reforms slowed down the pace of development of communication routes of the county.

The Degradation Simulation of Compressor Salt Fog Fouling for Marine Gas Turbine

2017 ◽  
Author(s):  
Yunpeng Cao ◽  
Lie Chen ◽  
Jianwei Du ◽  
Fang Yu ◽  
Qingcai Yang ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Cost Estimation ◽  
Gas Turbines ◽  
Operating Cost ◽  
Operating Time ◽  
Performance Degradation ◽  
Operating Conditions ◽  
Degradation Factor ◽  
Environment Temperature ◽  
Salt Fog

When a gas turbine operates in a marine environment, gradual performance degradation occurs due to salt fog in the compressor and turbine. Regular water washing of a gas turbine can effectively restore the performance loss caused by compressor salt fog fouling on the flow passage. However, inappropriate washing will increase maintenance costs, cause unnecessary down time and premature erosion of leaf surfaces. In this paper, a coefficient matching method for a three shaft marine gas turbine salt fog fouling degradation factor model is proposed, which can establish a model of salt fog fouling degradation factor according to a change in operating time and exhaust temperature in the washing cycle. The influences of load, environment temperature, inlet pressure loss and salt fog fouling rate on the performance degradation of the gas turbine are simulated and analyzed; then, the degradation regularity of the performance parameters of the gas turbine under different operating conditions and fouling degrees is obtained. Finally, a method of operating cost estimation for marine gas turbines is proposed that can estimate the cost of transient change and cumulative change in the cleaning cycle caused by the salt fog fouling, which can help the operator to determine the cleaning strategy and reduce the operation cost of the gas turbine.

scholarly journals Optimal costless extraction rate changes from a non-renewable resource

2014 ◽  
Vol 25 (6) ◽  
pp. 681-705 ◽  
Author(s):  
G. W. EVATT ◽  
P. V. JOHNSON ◽  
P. W. DUCK ◽  
S. D. HOWELL
Keyword(s):  
Optimal Control ◽  
Control Strategy ◽  
Renewable Resources ◽  
Investment Decision ◽  
Operating Cost ◽  
Renewable Resource ◽  
Analytic Solutions ◽  
Optimal Control Strategy ◽  
Critical Resource

This paper considers the role of costless decisions relating to the extraction of a non-renewable resource in the presence of uncertainty. We begin by deriving a size scale of the extractable resource, above which the solution to the valuation and optimal control strategy can be described by analytic solutions; we produce solutions for a general form of operating cost function. Below this critical resource size level the valuation and optimal control strategy must be solved by numerical means; we present a robust numerical algorithm that can solve such a class of problem. We also allow for the embedding of an irreversible investment decision (abandonment) into the optimisation. Finally, we conduct experimentation for each of these two approaches (analytical and numerical), and show how they are consistent with one another when used appropriately. The extensions of this paper's techniques to renewable resources are explored.

Understanding membrane fouling: a review of over a decade of research

2003 ◽  
Vol 3 (5-6) ◽  
pp. 155-164 ◽  
Author(s):  
J.-M. Laîné ◽  
C. Campos ◽  
I. Baudin ◽  
M.-L. Janex
Keyword(s):  
Organic Matter ◽  
Natural Organic Matter ◽  
Membrane Fouling ◽  
Inorganic Compounds ◽  
Operating Cost ◽  
Hydraulic Performance ◽  
Polymeric Membranes ◽  
Permeate Flux ◽  
Competitive Price

Since the first membrane applications at the end of the 1980s, the water treatment engineering community has been able to develop reliable low pressure membrane systems that are capable of producing high quality drinking water at a competitive price, making membrane technology an attractive solution to both upgrade existing plants and design new ones. A competitive price means low capital and operating cost, which are inversely proportional to membrane hydraulic performance (permeate flux). Porous membranes lose their hydraulic performance as materials accumulate on their surfaces and/or within their pores, a process called membrane fouling. Although a significant effort has been devoted to elucidating the fouling mechanisms of polymeric membranes by natural organic matter (NOM), no single model has yet been accepted. In fact, most of the existing literature is contradictory, showing that membrane fouling is far from being fully understood. This article reviews over a decade of Ondeo's experience on characterizing and preventing fouling of polymeric membranes by natural organic matter and inorganic compounds. The review focuses on the role of NOM size and hydrophobicity, of membrane chemistry, and of solution pretreatment (coagulation and/or adsorption). In addition, the efficacy of some currently used strategies to minimize membrane fouling is also discussed.

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