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41.
42.
In this paper, a stochastic translog production function frontier is specified to estimate the input-oriented technical efficiency of 11 major Australian irrigation schemes. The analysis is applied to a panel data set including the years 1998/1999, 1999/2000 and 2000/2001. The environmental efficiency of each sampled irrigation scheme in relation to treating salt emissions is measured. These EE measures are based on estimates of technical efficiency. The potential reduction of the environmentally detrimental salt emissions resulting from the improvement of environmental inefficiency is estimated. The study indicates that the sampled schemes operated at an average of 80.4% (1998/1999), 89.9% (1999/2000) to 95% (2000/2001) of full environmental efficiency. The potential contraction of salt emission is substantial. The paper also reveals that there is a wide range of EE scores in each year suggesting differences in the management performance of the salt emission problem across individual schemes. 相似文献
43.
This study uses a global model of the forest sector to examine changes in log production, consumption, prices, and trade and discusses the impacts of changes on economic wealth transfers for log export ban and log export tax scenarios. The results indicate that trade barriers are inefficient in allocating logs to domestic processors when a supply shortage exists. The trade barrier produces economic losses that exceed the benefits to the processors. A log export ban reduces log prices in the Pacc North-west by 8.5% and reduces timber harvests by 6.7%. The logs diverted to domestic mills save 1,208 more jobs than log export job losses but at an average annual cost of £230,463 per job saved. Economic transfers benefit lumber producers in the region under the ban. However, the benefits amount to 61% of regional timber producer losses including losses in the log export price premium, 39% of the loss to Asian processors, and 55% of the global consumer losses. Globally, lumber consumers lose £733 million. A log export tax scenario produces smaller impacts on prices and harvests since it does not eliminate total log exports. The tax scenario saves no jobs, and the average economic gain per job lost is £24,251 or about two-thirds of the current average salary in the forest products sector in the region. A log tax has the ability to retain £78 million in tax revenues. 相似文献
44.
Academic research is a public good whose production is supported by the tuition‐paying students that a faculty's research accomplishments attract. A professor's spot contribution to the university's revenues thus depends not on her spot research production, but rather on her entire cumulative research record. We show that, under a broad range of education market conditions, a profit‐maximizing university will apply a “high” minimum retention standard to the production of a junior professor who has no record of past research, but a “zero” retention standard to the spot production of a more senior professor whose background includes accomplishments sufficient to have cleared the “high” probationary hurdle. But if and when those education market conditions change, tenure‐based contracts may cease to be optimal. 相似文献
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When the underlying price process is a one-dimensional diffusion, as well as in certain restricted stochastic volatility settings, a contingent claim's delta is bounded by the infimum and supremum of its delta at maturity. Further, if the claim's payoff is convex (concave), the claim's price is a convex (concave) function of the underlying asset's value. However, when volatility is less specialized, or when the underlying process is discontinuous or non-Markovian, a call's price can be a decreasing, concave function of the underlying price over some range, increasing with the passage of time, and decreasing in the level of interest rates. 相似文献
48.
The paper investigates the possible effect of Australian incomes policy on strike activity compared to other countries not adopting such a strategy. The chief issue is whether Australia experienced a more pronounced fall in strikes during the 1983–85 period of the Accord than a representative group of other countries. We also seek evidence for the proposition that there is a transmission of industrial restiveness between countries. The results are unambiguous: in an international context the Australian diminution of strike activities after the beginning of the Accord was most unusual, and there is no evidence of a general world-wide transmission of industrial disputation. 相似文献
49.
Abstract. Accounting procedures have been suggested as a factor affecting the usefulness of reported earnings for the users of financial statements. However, little evidence exists to confirm the ways in which mandatory changes in income determination rules influence the way the market responds to accounting information. This study expands the existing literature by testing the notion that accounting method choice can affect earnings usefulness for firms engaged in research and development (R&D) activities. We test hypotheses concerning (1) changes in earnings usefulness for firms that switched their R&D accounting method as a result of Statement of Financial Accounting Standards No. 2 (SFAS No. 2); and (2) differences in earnings usefulness between similar firms using different R&D accounting methods prior to the rule change. We find that for our sample of R&D firms, there is a statistically significant decline in earnings usefulness for firms forced to switch from capitalizing to expensing R&D outlays, and that the decline appears to persist over time. In addition, the comparison of earnings usefulness between firms using different R&D accounting methods before SFAS No. 2 indicates that capitalizing firms had significantly higher earnings usefulness than expensing firms. Résumé. L'on a dit des méthodes comptables qu'elles avaient une incidence sur l'utilité des bénéfices déclarés pour les utilisateurs des états financiers. Peu de travaux établissent cependant de quelles façons les modifications obligatoires des règles régissant le calcul des bénéfices influent sur la réaction du marché à l'information comptable. Les auteurs enrichissent la documentation existante en testant la notion voulant que le choix de la méthode comptable puisse influer sur l'utilité des bénéfices dans le cas des entreprises qui poursuivent des activités de recherche et développement (R&D). Ils testent des hypothèses qui ont trat 1) à la variation de l'utilité de l'information relative aux bénéfices dans le cas d'entreprises ayant changé de méthode de comptabilisation des frais de R&D par suite de la publication du SFAS no 2 et 2) aux différences dans l'utilité de l'information relative aux bénéfices entre entreprises similaires recourant à des méthodes de comptabilisation des frais de R&D qui sont différentes, avant la modification des règles. Dans leur échantillon d'entreprises qui se consacrent à des activités de R&D, les auteurs observent un déclin statistiquement significatif dans l'utilité de l'information relative aux bénéfices chez les entreprises obligées de passer de la capitalisation à la passation en charges des frais de R&D et notent que ce déclin semble persister dans le temps. En outre, la comparaison des données observées chez des entreprises appliquant différentes méthodes de comptabilisation des frais de R&D avant la publication du SFAS no 2 révèle que l'utilité de l'information relative aux bénéfices des entreprises qui capitalisent leurs frais de R&D est beaucoup plus grande que celle de l'information relative aux bénéfices des entreprises qui imputent ces frais à l'exercice. 相似文献
50.
This article provides evidence on the incidence of U.S. nontariff measures (NTMs) by investigating the relationship between per capita income and various indicators of NTM use. Collectively, NTMs are found to bear heavily on products of export interest to the poorer countries. Antidumping duty actions and voluntary export restraint agreements primarily target newly industrializing and industrial nations in the middle third of the income scale. The overall protection pattern suggests poorer countries will find it difficult to escape NTMs by attaining higher levels of economic development. Results also provide insight into country and industry-level determinants of NTM use. ( JEL F0, F1) 相似文献