Vector network equilibrium problems with capacity constraints of arcs

In this paper, we study a (weak) vector equilibrium principle with capacity constraints of arcs and common arcs in some different paths. We obtain some necessary and sufficient conditions for a (weak) vector minimum cost flow. By virtue of a (weak) Δ-equilibrium principle, we also derive some necessary and sufficient conditions for a weak vector equilibrium flow.     

Reliable evacuation planning via demand inflation and supply deflation

This paper presents an evacuation route planning model that both accounts for demand uncertainty (i.e. the number of evacuees) as well as capacity uncertainty (i.e. the road capacities). To ensure reliability, the model plans for more evacuees (i.e. demand inflation) and less road capacity (i.e. supply deflation). A major contribution is that we provide a framework to determine the amount of demand inflation/supply deflation necessary to ensure a user-specified reliability level. The model is shown to be a natural generalization of previously proposed evacuation models. A small numerical case study reveals the key characteristics of the model.     

Increased coordination in public transport—which mechanisms are available?

After several years of New Public Management reforms within public transport, coordination seems to receive increased attention. With examples of actual as well as suggested changes taken from Denmark, Sweden and the UK the aim of the article is to analyse and classify the mechanisms utilized and suggested to increase coordination between core stakeholders within passenger railway services and bus services. Four distinctive mechanisms of coordination are suggested, namely organisational coordination, contractual coordination, partnership coordination and discursive coordination. Each coordination mechanism has its strengths and failures. The article also debates to what extent the mechanisms conflict with three core characteristics of New Public Management: Unbundling of the public sector into corporatized units; more contract-based competitive provision; and greater emphasis on output controls.     

THE DECISION MAKING IN SELECTING ONLINE TRAVEL AGENCIES: AN APPLICATION OF ANALYTIC HIERARCHY PROCESS

The emergence of Internet‐based distribution channels has created both opportunities for and challenges to the travel agencies. Based on the customer‐value perspective, this study focused on exploring the relative weights of the nine proposed fundamental travel products from an Internet perspective.

The study cohort comprised customers who had purchased room products from travel agencies websites, with data collected using a questionnaire survey. Customers were surveyed during a 3‐month period at Taipei International Airport. Excluding useless questionnaires resulted in 131 respondents, corresponding to a response rate of 18.71%.

We found that privacy, safety, and product quality were the three most important factors influencing customer purchases of room products on the Internet. The results of this study have some implications for travel agencies—companies will need to make a significant investment in website design of safety mechanism, and the greater the effort managers make to alleviate these concerns, the more likely it is that consumers will visit and buy products on their website.     

Investment cooperation of Russia and France: Influence of sanctions

The article analyzes the current state of Russian–French investment relations and their prospects, and highlights the factors determining them. Special attention has been paid to sectoral and regional aspects of French investment in Russia.     

Determinants of Geographic Voter Participation Rate Differentials: the 2014 Mid-Term Election

Voter participation rates vary widely across the 50 states and the District of Columbia. This empirical study seeks, within the context of a broadened version of the “rational voter model,” to identify determinants of this geographic variation. Using the 2014 mid-term general election, it was found that the voter participation rate across states and the District of Columbia was positively related to whether there is a close governor’s race or a close U.S. Senate race, the female labor force participation rate, the percent of the population aged 65 and over, the number of referenda on the ballot, and the degree of voting-by-mail usage. In addition, it was found that voter turnout was negatively related to the percentages of the population that are either Hispanic or Afro-American.     

Predicting Household Poverty: A Methodological Note with a Kenyan Example

Household surveys provide data that is used for identifying and measuring the poverty status of households and individuals. However, carrying out such surveys is expensive, especially in poor developing countries. Thus it is important to make maximum use of the available survey data in developing countries, especially in sub‐Saharan Africa, where such data are expensive to collect and analyse. This paper develops a simple method for using poverty indices derived from survey data for a given year, to predict poverty rates for subsequent periods without having to conduct a new household survey. We illustrate the workings of the method with data from Kenyan household surveys for 1994 and 1997.     

The integration of the formal and informal urban sectors in South Africa

Although the centre down and grass roots approaches in many respects may represent a developmental antithesis, a good case may be made for the combination of the two approaches under dualistic economic circumstances. An attempt is made in this paper to demonstrate how these diverse development policies may be successfully reconciled in urban Southern Africa. A review is given of the theoretical foundation of the two development approaches with a view to indicating how some aspects of these approaches may be combined to integrate the formal and informal sectors in urban areas in Southern Africa.