Hub Location Problem with Allowed Routing between Nonhub Nodes

In this study, we relax one of the general assumptions in the hub location literature by allowing routed flows between nonhub nodes. In hub networks, different flows are consolidated and routed via collection, interhub, and distribution arcs. Due to consolidation, some flows travel long paths despite closeness of their origin and destination. In this study, we allow direct flows by penalizing by a scalar factor of original cost of transshipment between these arcs. We present mathematical models for median, center, and set covering versions of the problem for single‐ and multi‐allocation cases. We test the models with the CAB and TR data sets. We discuss the properties of established direct connections for different models by using another mathematical model where the number of direct flows is bounded and interpret the effect of changes in problem parameters.     

(Un)related variety,urban milieu and tourism-company differentiation

High tourism growth in single-asset tourism cities is often associated with a standardization of supply of products and services by tourism entrepreneurs. However, and in contrast to this common-sense view, tourism growth in specific urban tourism milieus in the ‘sun-sea-sand’ tourism city of Antalya has stimulated tourism entrepreneurs to differentiate their products. Contrary to most economic-geography literature on spatial clusters, evolutionary economic geographers argue that inter-industry relations of (un)related variety are crucial in inter-firm differentiation. The aim of the paper is to define the factors that influence tourism-firm differentiation in the single-asset tourism city of Antalya. The empirical research is theoretically informed by evolutionary economic-geography literature, and pays much attention to the role different urban sub-milieus play in tourism-firm differentiation. It is the first research on the relation between (un)related variety and tourism-firm differentiation in tourism studies. The empirical research is based on primary data collected by a firm-level survey (hotels, restaurants, jewellery- and retail-trade firms) in the city of Antalya. The factors that influence tourism-firm differentiation are explored by using quantitative methods of analysis (an econometric logit-regression model and a correspondence analysis). The main result of the empirical research is that investments in firms in related sectors, in our case jewellery companies and hotels, are positively and significantly related to tourism-firm differentiation. In addition, the location tourism firms in areas visited by a mix of consumers (tourists and locals) also is positively and significantly related to inter-firm differentiation whereas urban milieus visited by locals only have a negative effect.     

Vulnerabilities of Highly Skilled Immigrants in Canada and the United States

Despite similar permanent status immigration categories (Economic, Family, and Refugee), the experiences of skilled immigrants in Canada and the United States are quite different. The point system used to select applicants for the Economic Class in Canada makes skilled immigrants vulnerable to a number of perils after the migrant lands. Foreign credentials and work experience are discounted by Canadian employers, who also impose a discriminatory income penalty on minorities. While previous cohorts of Economic Class migrants may have been warned of these perils via reliable migrant networks, new Canadian research suggests that recent cohorts have no such safety net. This article examines the economic integration experiences of Economic Class migrants in the United States in light of the Canadian experiences. The vulnerabilities reported in Canada do not appear to be transferable to the United States, because immigration policy in the US stresses pre-landing employment commitments via employer sponsorship. Accordingly, prospective Economic Class migrants to the United States do not migrate without first knowing how their credentials and “minority status” will affect employment opportunities. However, for the 85,000 skilled workers admitted to the United States on H-1B temporary visas each year, the perils noted in the Canadian experience are relevant, as are a number of additional concerns.     

The Significance of Networking and Company Size in the Level of Creativeness of Tourism Companies: Antalya Case

The importance of creativeness and networking in the attainment of global competitiveness has been emphasized in local development literature. The level of creativeness of a company is influenced by its level of networking at both global and local levels, as well as its “institutional thickness”. The aim of this paper is to explore the role of local, global and associational networking, as well as company size, in the contribution of tourism companies to the level of their creativeness. Following a different approach from previous research, this paper addresses the tourism dimension of networking and creativeness not only to tourism but also to local development literature by providing empirical evidence and employing a quantitative method of analysis based on a firm-level survey. The findings of the paper reveal that there is a relationship not only between the associational and global levels of networking and creativeness, but also between the size of a tourism company and its level of creativeness. Based on these findings, this paper emphasizes the need of a tourism company to develop networks at global levels in particular, but also at local and associational levels, to develop creative practices and to facilitate the sustainable development of tourism regions.     

BAYSIAN INFERENCE FOR ORDERED RESPONSE DATA WITH A DYNAMIC SPATIAL‐ORDERED PROBIT MODEL

ABSTRACT Many databases involve ordered discrete responses in a temporal and spatial context, including, for example, land development intensity levels, vehicle ownership, and pavement conditions. An appreciation of such behaviors requires rigorous statistical methods, recognizing spatial effects and dynamic processes. This study develops a dynamic spatial‐ordered probit (DSOP) model in order to capture patterns of spatial and temporal autocorrelation in ordered categorical response data. This model is estimated in a Bayesian framework using Gibbs sampling and data augmentation, in order to generate all autocorrelated latent variables. It incorporates spatial effects in an ordered probit model by allowing for interregional spatial interactions and heteroskedasticity, along with random effects across regions or any clusters of observational units. The model assumes an autoregressive, AR(1), process across latent response values, thereby recognizing time‐series dynamics in panel data sets. The model code and estimation approach is tested on simulated data sets, in order to reproduce known parameter values and provide insights into estimation performance, yielding much more accurate estimates than standard, nonspatial techniques. The proposed and tested DSOP model is felt to be a significant contribution to the field of spatial econometrics, where binary applications (for discrete response data) have been seen as the cutting edge. The Bayesian framework and Gibbs sampling techniques used here permit such complexity, in world of two‐dimensional autocorrelation.     

The Female Gaze in The Blind Owl by Sadeq Hedayat and Lost Highway by David Lynch

In feminist theory, the “female gaze” is a reaction to the imbalance of power created by the “male gaze”. Yet, since the concept lacks sound grounding in theory, it solely poses “a simple (antagonistic) response” to male voyeurism. This article traces the manifestations of the female gaze in Lost Highway and The Blind Owl, a film noir and a novella. It is concluded that instead of offsetting the imbalance of power, the female gaze only reverses it, turning the concept into yet another catchphrase of patriarchal hegemony to further commodify and subjugate women.     

Can first-year undergraduate geography students do individual research?

Based on the affirmation in the scholarship of teaching and learning that adding research component into early geography classes is mutually beneficial to both instructors and students, this paper presents a case study that quantitatively articulates the effects of adding a research project into a first-year physical geography class on students’ academic performance. Pushing research into earlier stages of undergraduate students’ academics, even in large classes, can be very beneficial yet challenging because most students at this level have no experience in research; plus, they may still be adjusting to university life. Part of the Undergraduate Research Initiative called First Year Research Experience (FYRE) at the University of Saskatchewan in Canada invited faculty to embed a research component into first year undergraduate classes to align research and teaching. A two-year endeavour in a first year physical geography class resulted in some interesting outcomes. (1) The most challenging part of research for students was the research question formation. (2) Students valued the opportunity to conduct a research project. (3) Doing in-class research actually improved student performance as seen in the higher overall average grades. (4) Students who attained the highest exam marks were not those who attained the highest research project marks.     

Senate Retirements and Progressive Ambition among House Members in 1996

In this article we examine the decisions made by the 85 United States representatives from the 13 states from which United States senators were retiring in 1996 and by the 137 representatives from states holding Senate elections in which incumbents were seeking reelection. We use these data to examine individual-level decision making in order to reassess the conventional wisdom on progressive ambition of House members. Using a decision calculus derived from previous studies, we are able to understand the decisions made by all but a handful of the representatives under study. These findings should prove useful in predicting which representatives will exhibit progressive ambition in the future.