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431.
Randall G. Holcombe 《The Review of Austrian Economics》2014,27(4):387-401
Transitional profits are above-normal profits that can be earned by firms as a result of changes in market conditions or entrepreneurial innovations of the firm. They are a common pool and are competed away by firms that enter profitable markets or imitate the innovations of profitable firms. The economics literature provides two conflicting views on transitional profits. One is that above-normal profit is a sign of economic inefficiency and is the result of either monopoly power or disequilibrium. The other is that economic profit is necessary for economic efficiency because profit is the lure that pushes entrepreneurs to allocate resources more efficiently. Both views are considered, along with an analysis of whether this common pool resource is competed away too rapidly, as the theory of common pool resources would suggest. 相似文献
432.
Wesley S. Randall Timothy G. Hawkins Jeffrey J. Haynie David R. Nowicki Achilles A. Armenakis Stephen R. Geary 《Journal of Business Logistics》2015,36(2):212-230
Practitioners are using performance‐based logistics (PBL) strategies to reduce cost and improve value in industries such as defense, transportation, manufacturing, and healthcare. PBL is part of a group of increasingly popular buyer–supplier strategies that focuses on outcomes as oppose to the delivery of products or services. A key tenet of PBL is the use of innovation to create cost avoidance that benefits buyers and suppliers. In this research, we explore the interfirm team‐level factors associated with innovation in successful PBL strategies. This research brings together business, organizational behavior, and engineering literature to study PBL team success. The study entailed interviews with 17 managers involved in large scale PBL projects. The interviews and follow‐on member checking sessions resulted in a model composed of eight emergent categories and associated propositions. Both practical and theoretical implications are provided. 相似文献
433.
Properties of the CUE estimator and a modification with moments 总被引:1,自引:0,他引:1
In this paper, we analyze properties of the Continuous Updating Estimator (CUE) proposed by Hansen et al. (1996), which has been suggested as a solution to the finite sample bias problems of the two-step GMM estimator. We show that the estimator should be expected to perform poorly in finite samples under weak identification, in particular, the estimator is not guaranteed to have finite moments of any order. We propose the Regularized CUE (RCUE) as a solution to this problem. The RCUE solves a modification of the first-order conditions for the CUE estimator and is shown to be asymptotically equivalent to CUE under many weak moment asymptotics. Our theoretical findings are confirmed by extensive Monte Carlo studies. 相似文献
434.
Targeting agricultural research and extension for food security and poverty alleviation: A case study of fish farming in Central Cameroon 总被引:2,自引:0,他引:2
Over 5 years of participatory on-farm research, market access, profitability, farming systems productivity and economic sustainability were compared on 100 small-scale farms in Central Cameroon. Integration technology based on the use of agricultural by-products as fishpond inputs was the driver for intensification. Over all farms, fishpond productivity increased from 498 kg to 1609 kg fish/ha (2145 kg/ha/yr). During the project period, the number of active fish farmers increased from 15 to 192 (including 55 farms which participated only through information exchange). Over all farms, net returns from aquaculture increased by 5 times over pre-project levels. Productivity, intensity and profitability increased more significantly in periurban areas with good market access, compared to rural areas. Among farmers with good market access, average net income from the aquaculture enterprise rose from $118 up to $1485. Research-Extension Team (RET) support cost an average of $61,300 per year. Over 5 years, rural farmers recaptured 23% of the relevant RET investment compared to 442% by periurban farmers. Likewise, increase in production attributable to RET intervention was higher for periurban (253%) compared to rural (11.3%) fish farmers. Within 3 years of the end of extension support, rural farmers had returned to pre-project production levels, whereas periurban farms had better maintained their productivity and profitability. Findings indicate that, in areas with little or no access to markets, the number of fishponds and fish farmers can be increased and yields improved, increasing local food supplies, but sustainability in the absence of extension subsidies is questionable. To achieve either of the two principal goals for the sector, food security and/or poverty alleviation, investments need to be made in improving the availability of quality technical assistance to targeted farmers and finding means of reducing social conflict arising from perceived inequalities in the accrual of the benefits of development. 相似文献
435.
Invasions by non-indigenous plant species pose serious economic threats to Australian agricultural industries. When a new
invader is identified a rapid response is critical, particularly if the invasive species has the ability to spread rapidly.
An early decision is required whether to attempt to eradicate or contain the infestation, or do nothing and leave it to landholders
to manage. These decisions should be based on economic considerations that account for long term benefits and costs. This
paper describes a bioeconomic simulation framework with a mathematical model representing weed spread linked to a dynamic
programming model to provide a means of determining the economically optimal weed management strategies over time, from the
government’s perspective. The modelling framework is used to evaluate hypothetical case study invasive weed control scenarios
in the Australian cropping systems. The benefit–cost ratios of invasion control are shown to be generally very high and clearly,
there are significant benefits to be achieved by controlling highly invasive weeds when initial infestations are at a low
level. Even if the invasion cannot be eradicated due to its high invasiveness or budget constraints, it still pays to maintain
invasions at low levels. 相似文献
436.
437.
438.
This paper examined links between U.S. soybean prices and the Dow Jones U.S. Water Index (DJUSWU). We particularly studied the impact of El Niño and La Niña events on price risk spillovers. Results showed that La Niña significantly increases the linkages between soybean and water equity markets. Based on this, we identified a new soybean hedge strategy that would be possible if a futures contract for the DJUSWU existed. This new strategy improves on the effectiveness of both a conventional naïve soybean market hedge, and a traditional time-varying hedge. The findings can be used to assist soybean agents in managing increased market risks associated with extreme weather events. 相似文献
439.
Randall Bluffstone Daiva Semeniene Jochem Jantzen 《Environmental and Resource Economics》2003,26(2):279-303
This paper presents estimates of costsassociated with approximating Lithuanianenvironmental protection legislation with thatof the European Union (EU). Lithuania is oneof twelve EU associate members in Central andEastern Europe that is currently preparing foraccession by approximating their legislationwith that of the EU. The costs of fifteen EUdirectives are considered and details are givenon four directives. Necessary investments maytotal Euro 1500 million by 2015 and the presentvalue of all annualized costs is expected to beabout Euro 2200 million. In 2015, annualized costsare estimated to be approximately Euro 500 million,but these costs are only part of the totalcosts of approximation. Non-environmentalcosts are not considered. Assuming a modestlyambitious average annual growth of GDP of 2.0%per year implies that approximation with thefifteen directives analyzed will cost roughly3.5% of GDP in 2015. This level of additional commitment to environmentalprotection is itself much higher than the 2.0%of GDP being spent on average by OECD countriesand suggests the possibility of a substantialeconomic burden on the Lithuanian economy. Public budgets and households are expected tocarry a substantial portion of this cost,because many directives are the responsibilityof national and local governments. Making theright choices that are expected to be part ofapproximation with the environmental acquis is likely to benefit from carefulcomparisons of costs and willingness to pay forthe environmental benefits of approximation. 相似文献
440.
The Origins of Entrepreneurial Opportunities 总被引:8,自引:0,他引:8
Kirzner's (1973) theory of entrepreneurship emphasizes the equilibrating role of entrepreneurship. When the market is not in equilibrium, profit opportunities exist, and entrepreneurs discover and act on these profit opportunities to equilibrate the market. Because Kirzner focuses on entrepreneurial actions when profit opportunities exist, and does not describe where they come from, one could imagine a fixed stock of profit opportunities that get used up as entrepreneurs discover them. But new profit opportunities are being created constantly. A taxonomy of the origins of entrepreneurial opportunities includes factors that disequilibrate the market, factors that enhance production possibilities, and most notably, opportunities created from previous acts of entrepreneurship. Entrepreneurial actions do not use up profit opportunities, but create them, and the critical role of entrepreneurship in the creation of new profit opportunities is emphasized. This line of reasoning leads directly to policy implications regarding the economic environment conducive to entrepreneurial discovery and the role of government in research and development. This paper enhances Kirzner's theory of entrepreneurship by illustrating how entrepreneurship enlarges the stock of future entrepreneurial opportunities, and points to entrepreneurship as the engine of economic progress. 相似文献