scholarly journals Optimal cost-efficiency solution of acoustic treatment for a complex meeting room

2019 ◽  
Vol 111 ◽  
pp. 02073
Author(s):  
Catalin BAILESCU ◽  
Vlad IORDACHE ◽  
Tiberiu CATALINA
Keyword(s):  
Cost Efficiency ◽  
High Volume ◽  
Actual Condition ◽  
Acoustic Measures ◽  
Acoustic Quality ◽  
The Difference ◽  
Room Model ◽  
Acoustic Treatment ◽  
Optimum Solution ◽  
The Cost

Achieving high acoustic quality in meeting rooms is important for intelligibility therefore several measures are needed especially in reflective high volume rooms. This article tackles the method and the solution to renovate a complex enclosure. The study is divided in multiple stages: development of the 3D room model exported in ODEON acoustic software, validation of the actual condition of the room with measurements, proposing and analysing different acoustic ceiling tiles and finally selecting the optimum solution based on the cost and efficacy in reducing the reverberation time (RT). The measured RT was four times higher (3.45 sec at f=1kHz) than the recommended value (0.9 sec at f=1kHz). The numerical simulation results were in accordance with the experimental measurements with errors of less than 0.2 sec. Using the difference between the RT obtained with the acoustic measures and the optimum RT we were able to calculate an efficiency that was later on compared with the cost of the solution. As a conclusion, due to a large diversity of acoustic ceiling types with different prices and sound absorption coefficients it is important, especially for complex room geometries, to run simulations and to perform a cost-efficiency analysis.

scholarly journals The cost efficiency of Vietnamese banks – the difference between DEA and SFA

2020 ◽  
Vol 22 (2) ◽  
pp. 209-227
Author(s):  
Phong Hoang Nguyen ◽  
Duyen Thi Bich Pham
Keyword(s):  
Cost Efficiency ◽  
Stochastic Frontier Analysis ◽  
Random Noise ◽  
Stochastic Frontier ◽  
Time Consistency ◽  
Efficiency Frontier ◽  
Content Type ◽  
Frontier Analysis ◽  
The Difference ◽  
The Cost

PurposeThe paper aims to enrich previous findings for an emerging banking industry such as Vietnam, reporting the difference between the parametric and nonparametric methods when measuring cost efficiency. The purpose of the study is to assess the consistency in issuing policies to improve the cost efficiency of Vietnamese commercial banks.Design/methodology/approachThe cost efficiency of banks is assessed through the data envelopment analysis (DEA) and the stochastic frontier analysis (SFA). Next, five tests are conducted in succession to analyze the differences in cost efficiency measured by these two methods, including the distribution, the rankings, the identification of the best and worst banks, the time consistency and the determinants of efficiency frontier. The data are collected from the annual financial statements of Vietnamese banks during 2005–2017.FindingsThe results show that the cost efficiency obtained under the SFA models is more consistent than under the DEA models. However, the DEA-based efficiency scores are more similar in ranking order and stability over time. The inconsistency in efficiency characteristics under two different methods reminds policy makers and bank administrators to compare and select the appropriate efficiency frontier measure for each stage and specific economic conditions.Originality/valueThis paper shows the need to control for heterogeneity over banking groups and time as well as for random noise and outliers when measuring the cost efficiency.

scholarly journals Analisis Sistem Antrian di Dinas Kependudukan dan Pencatatan Sipil Kabupaten Karawang

2021 ◽  
Vol 12 (1) ◽  
pp. 42
Author(s):  
Gina Khoirunnisa ◽  
Nelly Martini
Keyword(s):  
Cost Efficiency ◽  
Birth Certificate ◽  
Queuing System ◽  
Actual Condition ◽  
Queuing Model ◽  
Civil Registration ◽  
Queue Model ◽  
The Cost ◽  
Registration Service ◽  
Collection Time

<p><em>This study aims to clarify the phenomenon of the use of service facilities and find the level of optimization of the queuing system and total costs. The queuing system is a process related to waiting for people to get services efficiently. The study was conducted at the birth certificate registration queue system using 2 (two) facilities at the Karawang Regency Population and Civil Registry Office using the multiple lane queue model (M / M / S). the population in this study were visitors who came to the birth certificate registration counter. The data collection time for one month is July 2019 at 10:00 - 11:00 WIB. Based on the results of research, simulations, and discussion it can be concluded that the actual condition queuing system in the Karawang Regency's Population and Civil Registration Service uses 2 (two) lane facility counters, the optimal queuing system at the Karawang Regency's Population and Civil Registration Service uses 3 (three) counter facilities following the M / M / S queuing model. the cost efficiency obtained is Rp. 75,531, - per hour or Rp. 13,897,667 per month with a percentage of 75%.</em></p><p> </p>

Aneurysm coil embolization: cost per volumetric filling analysis and strategy for cost reduction

2015 ◽  
Vol 8 (5) ◽  
pp. 541-543 ◽  
Author(s):  
Charlie Wang ◽  
Esteban Cheng Ching ◽  
Ferdinand K Hui
Keyword(s):  
Inventory Management ◽  
Cost Efficiency ◽  
Unit Price ◽  
Grocery Stores ◽  
Inventory Management System ◽  
Detachable Coils ◽  
Filling Analysis ◽  
The Difference ◽  
Logarithmic Ratio ◽  
The Cost

BackgroundOne of the primary device expenditures associated with the endovascular treatment of aneurysms is that of detachable coils. Analyzing the cost efficiency of detachable coils is difficult, given the differences in design, implantable volume, and the presence of additives. However, applying a volume per cost metric may provide an index analogous to unit price found in grocery stores.MethodsThe price information for 509 different coils belonging to 31 different coil lines, available as of September 2013, was obtained through the inventory management system at the study site, and normalized to the price of the least expensive coil. Values were used to calculate the logarithmic ratio of volume over cost.ResultsOperator choice among coil sizes can vary the material costs by five-fold in a hypothetical aneurysm.ConclusionsThe difference in coil costs as a function of cost per volume of coil can vary tremendously. Using the present pricing algorithms, using the longest available length at a particular helical dimension and system yields improved efficiency.

scholarly journals Improvement of Logistic Processes Management as a Method of Improving the Activity of Enterprise

2020 ◽  
Vol 11 (514) ◽  
pp. 430-435
Author(s):  
I. S. Lutsenko ◽  
◽  
I. V. Konovalova ◽  
Keyword(s):  
Cost Efficiency ◽  
Advantages And Disadvantages ◽  
Methodical Approach ◽  
The Difference ◽  
Definition Of ◽  
The Cost ◽  
Logistic Functions ◽  
Different Levels ◽  
Is Outsourcing

The article is aimed at defining the role of improving the management of logistic processes as a method of improving the activity of enterprise. The relevance of application of logistic approach in the management of enterprise and definition of the concept of «management of logistic processes» is explored. The reasons for the relevance of the problem of improving the management of logistic processes of enterprise, especially during the period of instability in all countries of the world because of the COVID-19 pandemic, are allocated; factors influencing the efficiency of the supply chain are defined. The goals of supply processes management and supply chains management for the enterprise and logistic system are indicated. The importance of established communications and transparency of information flows of the logistic system in the process of regulation of activities at different levels of organization of logistic processes is substantiated. It is emphasized that the most common type of organization of logistic processes is outsourcing. A definition of logistics outsourcing is provided, the advantages and disadvantages of using outsourcing in logistics activities are considered, since the cost-efficiency of its use is quite a complex parameter, as is the service itself. The expediency of using a methodical approach in the management of logistic processes is examined, according to which the effectiveness of outsourcing of logistic functions is considered as the difference between the costs of the process. The research showed that improvement of management of logistic processes is of particular importance, since their competent organization is the key to improving the efficiency of production and economic activity of enterprise along with rapid adaptation to a changing environment.

scholarly journals Comparison Formwork Wood Sloof to Batako Viewed from the Aspect of Time and Cost

2015 ◽  
Vol 6 (4) ◽  
pp. 499
Author(s):  
Michael Tedja ◽  
Hendra Halim ◽  
Kezia Divaninta ◽  
Valentina Hidayat
Keyword(s):  
Cost Efficiency ◽  
Structural Systems ◽  
Structural System ◽  
Design Structure ◽  
Library Studies ◽  
Mold Making ◽  
Fast Development ◽  
Efficient Construction ◽  
The Difference ◽  
The Cost

Concrete-Mold is one of the most important elements of a building’s structural system. Like other structural systems, the concrete mold placed right after the main wiring structure placed. The function of the concrete mold is to specify the size of the concrete structure itself. The needs of an efficient construction timeand cost are some reasons of the decent and fast development of home-design structure. Sloof’s concrete-mold for two-floor houses can be done with two different materials, i.e. wooden plywood material and bricks. The difference usage of these two materials is the background of this research. The purpose of research is to find out the best way in time and cost efficiency of these two materials. This research carried out using the method of library studies, survey, and comparative study. The result of this research showed that the cost of the brick making the job of sloof concrete mold cheaper and faster. Thus, sloof concrete mold making is one of the project solutions that are more efficient in terms of time and cost.

scholarly journals Enhanced Recovery after Surgery in a Single High-Volume Surgical Oncology Unit: Details Matter

2016 ◽  
Vol 2016 ◽  
pp. 1-9
Author(s):  
Timothy L. Fitzgerald ◽  
Catalina Mosquera ◽  
Nicholas J. Koutlas ◽  
Nasreen A. Vohra ◽  
Kimberly V. Edwards ◽  
...  
Keyword(s):  
Enhanced Recovery ◽  
High Volume ◽  
Surgical Oncology ◽  
Readmission Rates ◽  
Before And After ◽  
The Difference ◽  
Oncology Unit ◽  
Eras Protocol ◽  
The Cost ◽  
Surgical Unit

Benefits of ERAS protocol have been well documented; however, it is unclear whether the improvement stems from the protocol or shifts in expectations. Interdisciplinary educational seminars were conducted for all health professionals. However, one test surgeon adopted the protocol. 394 patients undergoing elective abdominal surgery from June 2013 to April 2015 with a median age of 63 years were included. The implementation of ERAS protocol resulted in a decrease in the length of stay (LOS) and mortality, whereas the difference in cost was found to be insignificant. For the test surgeon, ERAS was associated with decreased LOS, cost, and mortality. For the control providers, the LOS, cost, mortality, readmission rates, and complications remained similar both before and after the implementation of ERAS. An ERAS protocol on the single high-volume surgical unit decreased the cost, LOS, and mortality.

scholarly journals Which One is More Efficient? German or Japanese Automobile Industry: A Meta-frontier with Technology Gap Comparison

2016 ◽  
Vol 9 (10) ◽  
pp. 13
Author(s):  
Yi-Cheng Liu ◽  
Ying-Hsiu Chen
Keyword(s):  
Cost Function ◽  
Technical Efficiency ◽  
Automobile Industry ◽  
Cost Efficiency ◽  
Production Technique ◽  
Technology Gap ◽  
The Difference ◽  
The Cost ◽  
Better Than ◽  
Observation Period

The goal of this paper is to compare the cost efficiency of the automobile industry in Germany and Japan during the period of 1980–2014 by applying the Meta-Frontier Cost Function. Despite the constant competition and the global automobile industry crisis during 2008-2010, only a few existing studies compare the efficiency of the industry cross countries. However, these all fail to address various types of technology adopted and the environment faced by automakers across countries. The meta-frontier model became a recognized and useful tool to evaluate technical efficiency of firms applying dissimilar technologies. Overall, the results signify that the cost efficiency of the German automobile industry by average is better than that of the Japanese one and the German one uses more superior production technique though it was lower the Japanese one in the 1980s. The difference reversed in the 1990s and has been enlarging since the 1990s to the end of the observation period.

A generalized fuzzy cost efficiency model

2020 ◽  
Vol 54 (6) ◽  
pp. 1775-1791
Author(s):  
Nazila Aghayi ◽  
Samira Salehpour
Keyword(s):  
Cost Efficiency ◽  
Minimum Cost ◽  
Extensive Literature ◽  
Data Envelopment ◽  
Fuzzy Environment ◽  
Decision Making Unit ◽  
Production Possibility Set ◽  
Fuzzy Cost ◽  
The Cost ◽  
Generalized Cost

The concept of cost efficiency has become tremendously popular in data envelopment analysis (DEA) as it serves to assess a decision-making unit (DMU) in terms of producing minimum-cost outputs. A large variety of precise and imprecise models have been put forward to measure cost efficiency for the DMUs which have a role in constructing the production possibility set; yet, there’s not an extensive literature on the cost efficiency (CE) measurement for sample DMUs (SDMUs). In an effort to remedy the shortcomings of current models, herein is introduced a generalized cost efficiency model that is capable of operating in a fuzzy environment-involving different types of fuzzy numbers-while preserving the Farrell’s decomposition of cost efficiency. Moreover, to the best of our knowledge, the present paper is the first to measure cost efficiency by using vectors. Ultimately, a useful example is provided to confirm the applicability of the proposed methods.

SELISIH BIAYA PRODUKSI SEBAGAI ALAT PENGENDALIAN MANAJEMEN PT INDO PUSAKA BERAU

2019 ◽  
Vol 3 (02) ◽  
pp. 397
Author(s):  
SAFITRI NURHIDAYATI ◽  
RIZKI AMELYA SYAM
Keyword(s):  
Raw Materials ◽  
Field Research ◽  
Analytical Tool ◽  
Production Costs ◽  
Raw Material ◽  
Labor Costs ◽  
Material Costs ◽  
Library Research ◽  
The Difference ◽  
The Cost

This study aims to analyze whether the difference that occurs in the cost of raw materials, direct labor, and factory overhead costs between the standard costs and the actual costs in PLTU LATI is a difference that is favorable or unfavorable. Data collection techniques with field research and library research. The analytical tool used is the analysis of the difference in raw material costs, the difference in direct labor costs and the difference in factory overhead costs. The hypothesis in this study is that the difference allegedly occurs in the cost of raw materials, direct labor costs, and factory overhead costs at PT Indo Pusaka Berau Tanjung Redeb is a favorable difference. The results showed that the difference in the cost of producing MWh electricity at PT Indo Pusaka Berau Tanjung Redeb in 2018, namely the difference in the price of raw material costs Rp. 548,029.80, - is favorable, the difference in quantity of raw materials is Rp. 957,216,602, - is (favorable) , the difference in direct labor costs Rp 2,602,642,084, - is (unfavorable), and the difference in factory overhead costs Rp 8,807,051,422, - is (favorable) This shows that the difference in the overall production cost budget is favorable or profitable. This beneficial difference shows that the company is really able to reduce production costs optimally in 2018.  

ANALISIS PENGARUH BIAYA OPERASIONAL PADA PERUSAHAAN PENERBANGAN NASIONAL

2017 ◽  
Vol 1 (2) ◽  
pp. 81-107
Author(s):  
Dheny Biantara
Keyword(s):  
Value Chain ◽  
Cost Efficiency ◽  
Cost Reduction ◽  
Cost Leadership ◽  
Oil Pricing ◽  
The Cost ◽  
Operation Flexibility ◽  
Airline Maintenance

Summarized Indonesian airline executive views on the reason for the cost problem in mayor airline andon the potential areas and measures of cost reduction in airline operation. Present an introductionsurvey where 3 executives from 3 Indonesian airlines were respondent. In the executive opinion the costproblem in mayor Indonesian airline is primarily due to fuel and oil pricing and money currency. Of thevarious function in airline maintenance was seen as least cost efficiency, whereas flight operation wasseen as an area with most potential for cost reduction. Indonesian airline had made route and fleetchanges after the beginning of 2011 to reduce cost, concludes from the analisys result havingprivatization would be an important step towards more efficient airline operation. Flexibility fromIndonesian airline regulatory would be very much welcome and the value chain concept to improveIndonesian airline having competitive adventage and cost leadership differentiation.

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