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Hiring seasonal driver helpers is one widely used approach by parcel delivery companies to deal with increased home-delivery volumes during peak seasons. Nonetheless, driver helper-related issues have not received much attention in academic research. This study investigates how driver helpers can be utilized in the most effective way by parcel delivery companies. We show that by separating a parcel delivery route into two sub-routes, namely “no-helper” and “with-helper” routes, the utilization rates of driver helpers can be improved, and the carrier cost be reduced considerably. Three main contributions of this study are as follows. First, based on costtrade-off insights, we develop a new mathematical model for the last-mile distribution problem, which we call the Driver Helper Dispatching Problem. Second, using this mathematical model, we perform a series of numerical experiments to identify the conditions under which the proposed “split-route solution” works most or least effectively. Finally, we perform sensitivity analyses to investigate the impact that changes in model parameters, such as fuel cost, would have on study results.  相似文献   
2.
The objectives of the study were to estimate mortality rate trends due to road traffic, drowning and fire/burns in children aged 0-14 years and in adolescents aged 15-19 years in Lithuania between the years 1971-2005. The data were obtained from Statistics Lithuania and the Health Information Centre. Trends were estimated by linear and polynomial regression. The study revealed that the child and adolescent unintentional injury mortality rates show declining trends. For children, the significant decreasing trends of mortality rates due to road traffic, drowning and fire/burns were observed. For adolescents there were significant decreasing trends for drowning deaths, and insignificant decreasing tendencies for deaths from fire/burns. There was an insignificant increased road traffic mortality rate trend for adolescent girls. For the adolescent boys group and for boys and girls together from the beginning of the study period there were increasing trends, followed by declining trends. In the last years, the increase was observed again.  相似文献   
3.
This paper examines the current status of tourism in Lithuania as well as potential German tourists' perceptions of Lithuania as a tourist destination. As tourism is an important source of foreign exchange and provides jobs for a large number of people, the Lithuanian Government is quite interested in increasing the number of tourists visiting the country. Data gathered at the International Tourism Exchange in Berlin was analysed and recommendations made concerning marketing techniques that could be used to increase tourism from the European Union and other western countries. Copyright © 2003 John Wiley &Sons, Ltd.  相似文献   
4.
This study analyzed the database of Canadian Accident Injury Reporting and Evaluation (CAIRE) for the injuries reported from January 1986 to March 1996 in seven provinces at children's or general hospitals in Canada. In order to describe the characteristics of injuries, we compared the different categories of injuries by sex and by age groups, identified patterns of injuries, and detected the products causing injury to Canadian people. The results showed that there were 130,489 injury cases in Canada during the 10 years from 1986 to 1996. The 10–19 year age group had 57,582 cases, representing 44.13% of total injuries, and making it the group with the highest occurrence of injuries. The male injury rate (69.75%) was significantly higher than the female rate (30.25%) (P = 0.0001). Six areas were identified as priorities for intervention: 1) injuries occurring on playgrounds among children and youth; 2) sports and playground apparatus injuries and injuries sustained in transit among young people; 3) the top five causes of injuries; 4) diagnosis and treatment of injuries; 5) consumer products and safety; and 6) nature and physical sites of injuries. Further work is needed in: evaluating injury causes, comparing the results with reports from other countries and the necessary approaches and prevention measures to reduce and control injury occurrences to improve the quality of consumer products, and to protect the health of the population in Canada.  相似文献   
5.
The aim of the study was to analyse traffic-injury mortality trends in children aged 0-14 years in Lithuania between 1971 and 2005. The data was derived from Statistics Lithuania. Trends were estimated by the use of cubic regression. In addition, data from 'tail' years was compared, and the t-test was used. The significance level p?≤0.05 was considered statistically significant. In the age groups 1-4 and 5-9 years, traffic injury mortality showed significantly decreasing trends, but in the age group 10-14 years, no significant tendencies have been observed. Traffic deaths as a proportion of injury deaths and as a proportion of all deaths have risen significantly in the age groups 1-4 and 10-14 years. In children aged 5-9 years, for traffic deaths percentage of injury deaths, no significance change was observed, and significant decrease was shown for traffic deaths percentage of all deaths. The study showed that in road safety work, more attention should be given to young adolescents aged 10-14 years and to children aged 1-4 years. A public health approach, effective law enforcements and community involvement are recommended for road safety management.  相似文献   
6.
This paper addresses two observational studies, of the use of a blender and a chip pan, and a study of the accident statistics regarding these two types of products. The aim is to understand risk in product use and the process of risk perception as displayed by product users. Consideration is given to the way information from both observational studies and accident statistics can support design in order to improve the safety of product users.  相似文献   
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