the aim of this paper is to present an efficient method for a rail freight car fleet sizing problem. this problem is modeled mathematically as a multi-period, dynamic and multi-objective, in which the rail freight wagons are assumed to be heterogeneous. demands for different wagons and all travel times are assumed deterministic. in order to increase the utilization of the available wagons in th...

Recent empirical studies in maritime economics define market contractions and expansions (market dynamic movements) as shipping agent controlled, distinguishing between cargo-owner and ship-owner markets. It is argued that freight dynamics are triggered by the activities of shipping agents, in the sense that both a higher earning market-state with high volatility and a lower earning market-stat...

This paper presents the issues surrounding the integration and visualization of freight data using internet-based mapping applications. In relation to Internet-based mapping technology in freight data collection and planning we: (a) address implementation issues associated with data integration, (b) present a system architecture to leverage existing publicly available interfaces and web applica...

Lactic acid concentrations increased in refrigerated and freeze-thawed anaerobically stored ground beef. Bacterial counts were higher in refrigerated samples, but the ratios of gram-positive bacteria in refrigerated and freeze-thawed samples were the same. No differences in appearance or odor between refrigerated and freeze-thawed samples were noted after 2 days of aerobic storage. Initial lact...

Air transport industry has gradually increased its share of global passenger and freight traffic, and this trend has accelerated in the last 40 years. For the past decade, air-freight traffic growth has outpaced air passenger traffic growth by 1-2% each year. In the past, air-freight sector offered limited services, with heavy reliance on several intermediaries and a significant dependence on a...

Introduction Common practices in current urban logistics planning in Scandinavia and the UK, and the degree to which SUTP (Sustainable Urban Transport Plan), SUMP (Sustainable Urban Mobility Plans) and SULP (Sustainable Urban Logistics Plans) guidelines are used, are examined in this paper. Methods A systematic literature review identifies relevant studies based on predefined inclusion criteria...

This paper investigates the determinants of freight rates between six European countries and 47 partners. We show that the inward freight rates are, on average, 23% higher than for outward ones, indicating that the cost of repositioning empty containers is mainly carried by European importers. Moreover, we have broken down the freight rates into basic ocean freight and surcharges in order to an...

The quality and safety of foods are affected by the environment, and the quality and safety of the environment are, in turn, affected by foods and food processing. To explore these interrelationships, as they might exist in the twenty-first century, one must speculate regarding future changes in foods and food processing. Several trends in food processing seem likely to predominate into the twe...

one of the simplest methods for short-term handling and storage of fish is the refrigeration in combination with dip treatments. this study was conducted to determine the effect of pre-storage α-tocopherol acetate dipping treatments on lipid stability of refrigerated rainbow trout fillets. trout fillets were dipped in α-tocopherol acetate solutions (200 and 500 mg kg-1 flesh) and subsequently s...

Foodborne illnesses may be related to many food production factors with home practices of consumers playing an important role in food safety. Consumer behavior for handling food leftovers has been studied, however little work on comparisons among countries has been published. The objective of this study was to investigate home food leftover practices of people from North American, South America...