In this paper we consider production economic and cost related yield rate in a JIT (Just in Time) system. Based on the traditional EPQ (Economic Production Quantity) model, we establish the relation between cost and yield rate. The geometric programming approach is applied in our model to solve this optimizing posynomials problem. A numerical example is carried out to verify the proposed model....

The overall goal of this study was to examine the impacts climate change on mean and variance rice yields in China by using historical crop data. An econometric model established estimate Just–Pope stochastic production functions identify potential type, keeping other factors constant. Based estimated functions, contribution rate climatic yield then assessed conducting growth accounting over pa...

We estimate the development effects of electrification across Brazil over the period 1960–2000. We simulate a time series of hypothetical electricity grids for Brazil for the period 1960–2000 that show how the grid would have evolved had infrastructure investments been made based solely on geography-based cost considerations. Using the model as an instrument, we document large positive effects ...

We examine the introduction of automatic air pollution monitoring to counter suspected tampering at local level, a central feature China’s “war on pollution.” Exploiting 654 regression discontinuity designs based city-level variation in day that was automated, we find an immediate and lasting increase 35 percent reported PM 10 concentrations post-automation. Moreover, automation’s increased onl...

The integration of markets may improve efficiency by lowering costs or reducing local market power. India, seeking to reduce electricity shortages, set up a new power market, in which transmission constraints sharply limit trade between regions. During congested hours, measures competitiveness fall and firms raise bid prices. I use confidential bidding data estimate the supply simulate outcomes...

We examine the impact of temperature on mortality in Mexico using daily data over period 1998–2017 and find that 3.8 percent deaths are caused by suboptimal (26,000 every year). However, 92 weather-related induced cold (<12°C) or mildly ( 12–20°C) days only 2 outstandingly hot (>32°C). Furthermore, temperatures twice as likely to kill people bottom half income distribution. Finally, we sh...

Using detailed household-level data from Malawi on physical quantities of agricultural outputs and inputs, we measure farm total factor productivity (TFP), controlling for land quality, rain, transitory shocks. We find that operated size capital are essentially unrelated to TFP, implying substantial misallocation. The output gain a reallocation factors their efficient use among existing farmers...

this paper explores the importance of oil sector in providing input for economic sectors and also its changes during the last decades in iran. to that end, the partial and total forward linkage between oil sector and other domestic production sectors as well as their changes are examined using the input-output tables of the years 1986 and 2001. and also based on the information on hand, perform...

We show empirically using panel data at the plot and farm level and based on a model incorporating supervision costs, risk, credit-market imperfections and scale-economies associated with mechanization that small-scale farming is inefficient in India. Larger farms are more profitable per acre, more mechanized, less constrained in input use after bad shocks, and employ less per-acre labor than s...

The aim of this study was to investigate the impact climatic variables (minimum temperature, maximum average precipitation, and precipitation deviation) on yields pistachio, banana, mango in cold, hot–arid, hot–humid, temperate–humid climates using Just–Pope function. function is a relatively new approach context. most effective were identified by stepwise regression Feiverson algorithm. Data c...