Analyzing Productivity Indices for Urban Water and Wastewater Companie تحليل شاخص‌های بهره‌وری شرکت‌های آب و فاضلاب شهری
Journal Title: آب و فاضلاب - Year 2018, Vol 29, Issue 6
Abstract
Abstract Major investments and high operational expenditure are the special characteristics of the water and wastewater industry in the context of organizational mission. Planning the production and improving the efficiency of production factors by quantitative models are among the conventional methods in the management of investments, costs and financial resources. This research aimed to identify the share and elasticity of the urban water production factors and partial and total productivity in the context of production planning. The data used are panel data according to size of production and production factors (labor, capital stock and energy). The data on 34 urban waters and wastewater companies in the period of 2006-2016 (374 samples) were used and the fixed effect econometric method was applied to estimate the Cobb – Douglas production function. The results indicated that in the water and wastewater industry the elasticity of the labor, the capital and the energy was 0.32, 0.42, and 0.21, respectively. The research findings showed that the productivity of capital and energy as well as the total factor productivity declined in the years 2015 and 2016 while the efficiency of labor remained constant. The findings can be used by the top management of the industry as a strong tool for strategic planning of production of a high level of reliability.
Authors and Affiliations
seyyed Hosein sajadifar, Masoud kashaei, Gholamreza Ebrahimabadi, Mohamad Davoodabadi
Keywords
Related Articles
- EP ID EP474023
- DOI 10.22093/wwj.2017.87689.2416
- Views 86
- Downloads 0
کاربرد روش بهينه‌سازي نيروي مرکزي در طراحي سامانه‌هاي توزيع آب
Central Force Optimization Method Used to Optimize Water Distribution Networks Water supply networks account for a major portion of the urban infrastructure requiring sizable funds for their construction and operation....
طراحي جانمايي و ظرفيت بهينه چاه‌هاي پمپاژ زهکشي با هدف افت سطح آب زيرزميني در مناطق شهري Pumping Drainage Well Layout and Optimum Capacity Design to Lower Groundwater Table in Urban Areas
Abstract High groundwater levels in urban areas pose major problems in construction and mining projects. A typical and effective solution in these situations is to dig drainage wells to lower the water table to the desi...
تدوين مدل تخصيص عادلانه کمّي و کيفي آب در سيستم‌هاي رودخانه-مخزن: کاربرد روش بهينه‌سازي سناريوها
Developing a Water Quantity-Quality Equitable Allocation Model in River-Reservoir Systems: Application of Scenario Optimization Technique Water quantity-quality equitable allocation model in river-reservoir systems prov...
ارزيابي عملکرد مالي صنعت آب و فاضلاب شهري بر اساس مدل BSC
Using the BSC Model to Evaluate the Financial Performance of the Urban Water and Wastewater Industry Among the different models so far proposed for the guiding and evaluation of organizational performance, the balanced s...
کارايي زئوليت طبيعي کلينوپتيلولايت جهت جذب فلز سرب از محلول‌هاي آبي و تعيين ايزوترم و سينتيک جذب
Study the Efficiency of Clinoptilolite Zeolite for Lead Removal from Aqueous Solutions and Determining Adsorption Kinetics and Isotherms Recently the low-cost adsorbent for heavy metals removal such as Lead in recent ye...