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41.
Vladimir Canudas-Romo Eva DuGoff Albert W. Wu Saifuddin Ahmed Gerard Anderson 《North American actuarial journal : NAAJ》2016,20(3):276-285
We use expert clinical and public health opinion to estimate likely changes in the prevention and treatment of important disease conditions and how they will affect future life expectancy. Focus groups were held including clinical and public health faculty with expertise in the six leading causes of death in the United States. Mortality rates and life tables for 2040 were derived by sex and age. Life expectancy at age 20 and 65 was compared to figures published by the Social Security Administration and to estimates from the Lee-Carter method. There was agreement among all three approaches that life expectancy at age 20 will increase by approximately one year per decade for females and males between now and 2040. According to the clinical experts, 70% of the improvement in life expectancy will occur in cardiovascular disease and cancer, while in the last 30 years most of the improvement has occurred in cardiovascular disease. Expert opinion suggests that most of the increase in life expectancy will be attributable to the already achieved reduction in smoking rates, especially for women. 相似文献
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43.
Emilio Said Ahmed Bel Hadj Ayed Damien Thillou Jean-Jacques Rabeyrin Frédéric Abergel 《Quantitative Finance》2021,21(1):69-84
This paper deals with a fundamental subject that has seldom been addressed in recent years, that of market impact in the options market. Our analysis is based on a proprietary database of metaorders—large orders that are split into smaller pieces before being sent to the market—on one of the main Asian markets. In line with our previous work on the equity market [Said, E., Bel Hadj Ayed, A., Husson, A. and Abergel, F., Market impact: A systematic study of limit orders. Mark. Microstruct. Liq., 2018, 3(3&4), 1850008.], we propose an algorithmic approach to identify metaorders, based on some implied volatility parameters, the at the money forward volatility and at the money forward skew. In both cases, we obtain results similar to the now well-understood equity market: Square-Root Law, Fair Pricing Condition and Market Impact Dynamics. 相似文献
44.
The importance of international trade to the Malaysian economy can hardly be exaggerated. Trade represents a lifeline for the Malaysian economy. Export‐oriented industrialization in the 1990s converted the labor‐surplus economy into a labor‐deficit one and then back to a labor‐surplus one in 2000 and beyond. The incidence of poverty has fallen by half since the early 1980s. Trade has also contributed much to the structural transformation and modernization of the economy. Had Malaysia been a closed economy, Malaysia would have shared the same fate as some other less developed countries that remain economically backward. Its external trade policy has paved the way for greater inflows of foreign direct investment, as foreign direct investors are not so much interested in serving the small domestic market as serving the vast external market. The large inflows of foreign direct investment have conferred positive effects on the domestic economy. This has meant significant improvements in the overall living standards for the Malaysians. Internationalization has provided employment opportunities, thereby raising their living standards through higher and more stable earnings. © 2009 Wiley Periodicals, Inc. 相似文献
45.
This paper presents Uganda's experience with aid flows overthe period 1970-96. It discusses the compilation of aid dataand also reviews the chronological developments in aid flowsto Uganda. Over this period, the sectoral distribution and typeof aid is largely dictated by the government's economic programmesin place. The period 1962-71 largely reflects government borrowingfor on-lending to agriculture and industry whereas the period1979-85 shows a wider range of sector-specific programmes drivenby the need to reconstruct and rehabilitate the economy. Althoughthe need to reconstruct and rehabilitate the economy continued,support for policy reform began to take up an increasing proportionof aid over the period 1987-96. We also analyse the impact ofaid on some major macroeconomic variables and find that investmentand real exchange rate developments have been largely drivenby official development aid flows. Although we find a similarrelationship between aid and improved policy environment, thefindings show that in the latter part, i.e., 1992-6, the continuedpolicy reform was driven more by ownership of the programmethan by aid. Indeed, in this latter period, the aid/GDP ratiosdeclined. The major lesson drawn from this study is that ownershipof a reform programme is more critical for its success, henceour conclusion that aid should be used for financing ratherthan buying reforms. 相似文献
46.
Ahmed. A. A. Asseery 《Applied economics》2013,45(6):723-728
The study shows that procurements of traditional arms by two countries have the possibility of moving together over time. This is demonstrated with reference to Iran and the member states of the Gulf Co-operation Council (GCC) for the period 1961- 1996. Acquiring arms by the member states of the GCC is shown to be only a response to the perception of their leaders to the external threat posed by Iran throughout the varying regimes that have ruled Teheran. In the light of the recent emergence of macroeconomic problems such as unemployment in the economies of the GCC coupled with the ineffectiveness of the financially exhausting build-up of arms as a military deterrent policy, one important implication of the study is that the priority of the GCC leaders will have to turn to a more effective deterrent policy such as acquiring nuclear technology rather than engaging in a costly and unsuccessful Arab military alliance as experienced in the 1970s. 相似文献
47.
Quarterly panel data covering the largest 10,000 city-pairs in the domestic US from 1998 are used to investigate airlines market entry and exit decisions. Several models are estimated looking at changes in the number of carriers serving in a market. The influence of a number of markets characteristics is examined, including number of passengers, average fare, average yield, service concentration, great circle distance, and seasonality. The results suggest that airlines are more likely to enter a market when market concentration is high and there are high average fares. Also airlines tend to enter new markets in the second quarter, then in the fourth quarter, and then in the third quarter of the year. 相似文献
48.
Nisrine Mouhrim Ahmed El Hilali Alaoui Jaouad Boukachour 《International Journal of Sustainable Transportation》2019,13(6):419-432
Electric vehicles (EV) use an eco-friendly technology that limits the greenhouse gas emissions of the transport sector, but the limited battery capacity and the density of the battery are the major barriers to the widespread adoption of EV. To mitigate this, a good method seems to be the innovative wireless charging technology called ‘On-Line EV (OLEV)’, which is a contactless electric power transfer technology. This EV technology has the potential to charge the vehicle’s battery dynamically while the vehicle is in motion. This system helps to reduce not only the size of the battery but also its cost, and it also contributes to extending the driving range before the EV has to stop. The high cost of this technology requires an optimal location of the infrastructure along the route. For this reason, the objective of this paper is to study the problem of the location of the wireless charging infrastructure in a transport network composed of multiple routes between the origin and the destination. To find a strategic solution to this problem, we first and foremost propose a nonlinear integer programming solution to reach a compromise between the cost of the battery, which is related to its capacity, and the cost of installing the power transmitters, while maintaining the quality of the vehicle’s routing. Second, we adapt the multi-objective particle swarm optimization (MPSO) approach to our problem, as the particles were robust in solving nonlinear optimization problems. Since we have a multi-objective problem with two binary variables, we combine the binary and discrete versions of the particle swarm optimization approach with the multi-objective one. The port of Le Havre is presented as a case study to illustrate the proposed methodology. The results are analyzed and discussed in order to point out the efficiency of our resolution method. 相似文献
49.
Steve Berry Ahmed Khwaja Vineet Kumar Andres Musalem Kenneth C. Wilbur Greg Allenby Bharat Anand Pradeep Chintagunta W. Michael Hanemann Przemek Jeziorski Angelo Mele 《Marketing Letters》2014,25(3):245-256
This article reviews the rapidly growing literature on structural models of complementary choices. It discusses recent modeling developments and identifies promising areas for future research. 相似文献
50.
Serina Al-Haddad Betty Thorne Vikram Ahmed William Sause 《Journal of Education for Business》2019,94(2):92-100
Business analytics can be described as the statistical analysis of data to make decisions and meaningful conclusions. As the demand to advance the curriculum of undergraduate business education increases, courses in business analytics aim to provide students with fundamental skills in critical thinking. Educators have found that spreadsheet applications that include statistical features are easy to use and facilitate student learning. The authors analyzed student performance in an introductory business analytics course that used Microsoft Excel as a statistical tool by comparing scores from this introductory course with those from an information technology course in which only Excel skills were learned. 相似文献