共查询到20条相似文献,搜索用时 31 毫秒
1.
Sanna-Mari Hynninen 《Journal of Productivity Analysis》2009,31(1):15-26
This paper investigates the technical efficiency of labor market matching from a stochastic frontier approach. The true fixed-effects
model (Greene J Prod Anal 23:7–32, 2005a; J Econom 126:269–303, 2005b) is utilised in order to separate cross-sectional heterogeneity from inefficiency, and inefficiency terms are modelled following
Battese and Coelli (Empir Econ 20:325–332, 1995). The data set consists of almost 17,000 observations from Local Labor Offices (LLOs) in Finland. According to the results,
there are notable differences in matching efficiency between regions, and these differences contribute significantly to the
number of filled vacancies. If all regions were as efficient as the most efficient one, the number of total matches per month
would increase by over 23%. The heterogeneity of the job-seeker stock is an important determinant of matching efficiency:
the weight of the composition of the job-seeker stock in the inefficiency terms is on average 85%.
相似文献
Sanna-Mari HynninenEmail: |
2.
We use the multivariate extension of Exponential Generalized Autoregressive Conditionally Heteroscedastic (EGARCH) of Nelson,
Econometrica, 59: 347–370, 1991 to test for spillover effects and examine the extent of asymmetries between short- and long-term interest rates and portfolios
of money center, large, and medium-size banks in the U.S. Our results indicate the existence of price and volatility spillovers
from short- and long-term interest rates to the three bank portfolios. We also provide evidence of response asymmetries for
the portfolios of money center and large banks, suggesting that money center and large banks are more sensitive to negative
than positive short- and long-term interest rate changes.
相似文献
Dave O. JacksonEmail: |
3.
This paper presents a new test of the permanent income hypothesis in five major industrial countries. The test first decomposes
consumption and income into their long run trend (permanent) and short run cyclical (transitory) components, using the recently
developed multivariate stochastic detrending approach developed by Vahid and Engle (1997), among others. This approach exploits the presence of possible common stochastic trends and cycles among the variables in
the system to arrive at a more efficient decomposition of these variables. Using the decomposition results, and in contrast
to many articles in the literature, the paper finds support for the permanent income hypothesis. Specifically, the paper finds
that, while permanent consumption is related to permanent income, transitory consumption is related to neither permanent nor
transitory income.
相似文献
Barry Wilbratte (Corresponding author)Email: |
4.
Application of a double bootstrap to investigation of determinants of technical efficiency of farms in Central Europe 总被引:1,自引:1,他引:0
The paper provides one of the first applications of the double bootstrap procedure (Simar and Wilson 2007) in a two-stage estimation of the effect of environmental variables on non-parametric estimates of technical efficiency.
This procedure enables consistent inference within models explaining efficiency scores, while simultaneously producing standard
errors and confidence intervals for these efficiency scores. The application is to 88 livestock and 256 crop farms in the
Czech Republic, split into individual and corporate.
相似文献
Laure LatruffeEmail: |
5.
In this paper, we address the question of Data Envelopment Analysis (DEA) evaluation of efficiency when aggregate cost or
revenue data must be used. We show that the DEA technical inefficiency measure using total revenues as the single output variable
or total costs as the single input variable equals the aggregate technical and allocative inefficiency. We employ this result
to estimate allocative inefficiency and construct statistical tests of the null hypothesis of no allocative inefficiency analogous
to those of the null hypothesis of no scale inefficiency. We illustrate our method using revenue and personnel data for the
top U.S. public accounting firms over 1995–1998. Our empirical results indicate the existence of statistically significant
allocative inefficiency in the public accounting industry.
相似文献
Ram NatarajanEmail: |
6.
This paper proposes a flexible time-varying stochastic frontier model. Similarly to Lee and Schmidt [1993, In: Fried H, Lovell
CAK, Schmidt S (eds) The measurement of productive efficiency: techniques and applications. Oxford University Press, Oxford],
we assume that individual firms’ technical inefficiencies vary over time. However, the model, which we call the “multiple
time-varying individual effects” model, is more general in that it allows multiple factors determining firm-specific time-varying
technical inefficiencies. This allows the temporal pattern of inefficiency to vary over firms. The number of such factors
can be consistently estimated. The model is applied to data on Indonesian rice farms, and the changes in the efficiency rankings
of farms over time demonstrate the model’s flexibility.
相似文献
Young H. LeeEmail: |
7.
Measuring performance in the presence of stochastic demand for hospital services: an analysis of Belgian general care hospitals 总被引:1,自引:1,他引:0
Mike Smet 《Journal of Productivity Analysis》2007,27(1):13-29
Since demand for hospital services is subject to substantial variability, the relationship between uncertain demand, excess
capacity, hospital costs and performance should be investigated thoroughly. In this paper a waiting time indicator to proxy
hospital standby capacity is incorporated into a multi-product translog cost function for Belgian general care hospitals.
The indicator is derived from queuing theory and improves on the conventionally used (inverse of the) occupancy rate. The
multi-product stochastic frontier specification allows calculation of cost elasticities and marginal cost of seven hospital
departments, as well as the degree of economies of scale and scope and enables identification of differences in efficiency.
相似文献
Mike SmetEmail: |
8.
Several studies in the literature have tried to assess the impact of real depreciation of the Canadian dollar on the Canadian
trade balance. They have either relied on the trade data between Canada and the rest of the world or between Canada and her
major trading partners. In this paper we consider the trade between Canada and her major trading partner, the U.S. However,
unlike previous research, we disaggregate the trade data between the two countries by commodity. We use export and import
data over the period 1962–2004 from 152 commodities and the bounds testing approach to cointegration and error-correction
modeling and show that real depreciation of the Canadian dollar has short-run effects on the trade balance of two-thirds of
the industries. However, only in 50% of the industries, the short-run effects translate into the long-run favorable effects.
相似文献
Mohsen Bahmani-OskooeeEmail: |
9.
Specialized managerial expertise, coupled with the threat of non-renewal should improve efficiency in firms that opt for contract
management arrangements. To examine this we apply a generalized version of tests for expense preference behavior to U.S. hospitals
in the 1990s. Extending prior literature, we create a quasi-experimental design for a comparison of adopters and non-adopters
of contracts using propensity score methods. We generate the distribution of ‘expense preference’ parameters for all contract
adopters in both the pre- and post-adoption states, and for a matched control group of non-adopters over the same period.
Our results show that contract adoption leads to reduced expense preference behavior, but that this result depends critically
on the input being examined.
相似文献
Kathleen CareyEmail: |
10.
The methodologies that have been used in existing research to assess the efficiency with which organic farms are operating
are generally based either on the stochastic frontier methodology or on a deterministic non-parametric approach. Recently,
Kumbhakar et al. (J Econom 137:1–27, 2007) proposed a new nonparametric, stochastic method based on the local maximum likelihood
principle. We use this methodology to compare the efficiency ratings of organic and conventional arable crop farms in the
Spanish region of Andalucía. Nonparametrically encompassing the stochastic frontier model is especially useful when comparing
the performance of two groups that are likely to be characterized by different production technologies.
相似文献
Teresa SerraEmail: Email: |
11.
Government regulations designed to promote social welfare can have unintended consequences on efficiency. According to the
LeChatelier Principle, regulations that effectively limit substitution possibilities among inputs will reduce firm and industry-wide
efficiency. In imperfectly competitive markets, however, government constraints on a strategic variable can facilitate coordination.
An advertising restriction, for example, would improve efficiency if it enables firms to produce the same level of sales with
less advertising spending. We use data envelopment analysis to estimate the effect of marketing regulations on efficiency
in the U.S. cigarette industry. Unlike previous studies, we do not assume that marketing and production technologies are separable.
Our results demonstrate that coordination effects dominate LeChatelier effects. Cigarette producers have benefited from advertising
restrictions, a result consistent with the capture theory of regulation.
相似文献
Victor J. TremblayEmail: |
12.
Dennis Halcoussis Anton D. Lowenberg G. Michael Phillips 《Journal of Economics and Finance》2009,33(3):324-329
Many observers argued that Barack Obama’s candidacy in the U.S. presidential election of 2008 benefited from the financial
crisis and recessionary economic conditions which voters blamed on the Republican administration. However, an empirical examination
of stock price and public opinion data indicates that improvements in Obama’s electoral prospects led stock price declines
and that gains by Obama were more likely to be followed by falling stock prices than by rising prices. This evidence suggests
that the poor performance of the stock market in the days leading up to Obama’s victory was partly caused by, rather than
causing, Obama’s success.
相似文献
G. Michael Phillips (Corresponding author)Email: |
13.
This paper examines the impact of R&D on multifactor productivity in the U.S. agricultural sector over the 1910–1990 period.
We use the Bennet–Bowley indicator to measure agricultural productivity based on a multiple output-multiple input technology.
We demonstrate the relationship between the price dependent Bennet–Bowley indicator and the Luenberger productivity indicator
which is constructed from directional distance functions without requiring price information. These performance measures are
dual to the profit function which arguably makes them especially useful in the agricultural setting. We employ time-series
techniques to investigate the effect of R&D on the pattern of productivity growth. We find that we cannot reject the presence
of a cointegrating relationship between the two series and that productivity growth in the U.S. agriculture responds positively
to R&D expenditure with a lag of between four and ten periods.
相似文献
D. MargaritisEmail: |
14.
Rajeev K. Goel 《Journal of Economics and Finance》2008,32(2):195-205
This paper uses recent US state-level data to examine smoking behavior across four population groups divided by age, literacy,
income and ethnicity. Another contribution lies in the consideration of various smoking control policies and the full costs
of smoking. Overall, the results show that non-price smoking policies are relatively more effective than price or tax policies
in reducing smoking prevalence and that these policies gain effectiveness as the population begins to age.
相似文献
Rajeev K. GoelEmail: |
15.
This study measures productivity growth on Irish dairy farms over the period 1984–2000. A total factor productivity index
is constructed for the dairy system and is decomposed into technical change, efficiency change, and changes in scale efficiency.
This is achieved by estimating a stochastic output distance function model of the production technology in use on Irish dairy
farms. Overall, productivity on Irish dairy farms grew by 1.2% per annum over the sample period.
相似文献
Alan Matthews (Corresponding author)Email: |
16.
Subhash C. Ray 《Journal of Productivity Analysis》2007,27(3):231-236
Determining the profit maximizing input–output bundle of a firm requires data on prices. This paper shows how endogenously
determined shadow prices can be used in place of actual prices to obtain the optimal input–output bundle where the firm’s
shadow profit is maximized. This approach amounts to an application of the Weak Axiom of Profit Maximization (WAPM) formulated
by Varian [(1984) The Non-parametric approach to production analysis. Econometrica 52:3 (May) 579–597] based on shadow prices rather than actual
prices. At these shadow prices, the shadow profit of a firm is zero. The maximum shadow profit that could have been attained
at some other input–output bundle is shown to be a measure of the inefficiency of the firm. Because the benchmark input–output
bundle is always an observed bundle from the data, it can be determined without having to solve any elaborate programming
problem.
相似文献
Subhash C. RayEmail: |
17.
This paper shows how to compute the standard errors for partial effects of exogenous firm characteristics influencing firm
inefficiency under a range of popular stochastic frontier model specifications. We also develop an R2-type measure to summarize the overall explanatory power of the exogenous factors on firm inefficiency. The paper also applies
a recently developed model selection procedure to choose among alternative stochastic frontier specifications using data from
household maize production in Kenya. The magnitude of estimated partial effects of exogenous household characteristics on
inefficiency turns out to be very sensitive to model specification, and the model selection procedure leads to an unambiguous
choice of best model. We propose a bootstrapping procedure to evaluate the size and power of the model selection procedure.
The empirical application also provides further evidence on how household characteristics influence technical inefficiency
in maize production in developing countries.
相似文献
Yanyan LiuEmail: |
18.
This study introduces an Environmental Performance Index (EPI) to assess the performance of firms that produce both good and bad outputs. In the one good output one bad output case, the EPI simplifies to the ratio of good–bad output for period t + 1 and period t. After deriving the index, data for U.S. coal-fired power plants from 1985 to 1998 are used to demonstrate insights that the EPI can provide. We find that power plants with units participating in Phase I of the Acid Rain Program experience a dramatic improvement in their EPI during 1994–1995.
相似文献
Carl A. Pasurka Jr.Email: Phone: +202-566-2275Fax: +202-566-2373 |
19.
Efficient frontier estimation: a maximum entropy approach 总被引:1,自引:0,他引:1
An alternative efficiency estimation approach is developed utilizing generalized maximum entropy (GME). GME combines the strengths
of both SFA and DEA, allowing for the estimation of a frontier that is stochastic, without making an ad hoc assumption about
the distribution of the efficiency component. GME results approach SFA results as the one-sided inefficiency bounds used by
GME shrink. Results similar to DEA are achieved as the bounds increase. The GME results are distributed like DEA, but yield
virtually the same rankings as SFA. The results suggest that GME may provide a link between various estimators of efficiency.
相似文献
Jon RezekEmail: |
20.
We analyze how the market processes a signaling event by studying a sample of self-tender offers, events often viewed as signals
of firm value. By examining changes in the degree of informed trading, we find asymmetric information costs fall at announcement,
remain low throughout the event, and increase at offer expiration. By 1 month following expiration, informed trading returns
to a level not significantly different from that prior to the offer. Higher risk firms have significantly larger declines
in information asymmetry during the offer. Increases in information asymmetry persist 1 month following expiration for firms
with lower pre-offer informed trading.
相似文献
Judith SwisherEmail: |