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This study investigates, both theoretically and empirically, the effects of joint ventures on traffic. Although alliances are a pre-condition for joint ventures, both cooperation agreements are different in their nature. The reason is that alliances are revenue-sharing agreements, whereas joint ventures also involve a cost-sharing commitment. Our empirical analysis focuses on the transatlantic market, including non-stop routings (interhub markets) and one-stopover routings (interline markets). Our theoretical and empirical findings emphasize the relevance of economies of traffic density and reveal a positive effect of joint ventures on traffic, both in interhub and interline markets.

This paper aims to analyze the impact of information technology (IT) system implementation on the integration of data and information between sales and accounting departments, and how data integration affects relations with supplier and customers.

The change between three different reservation and distribution systems in an airline company was assessed over 20 years based on qualitative data collected while events unfolded and interviews that traced events retrospectively.

This study finds that data integration challenges affect the capacity to use revenue and sales data for control purposes and integrating with suppliers and customers. The systems either facilitated the ability to integrate sales and accounting data or enabled integration in wider supplier and customer networks. The implementation of different reservation and distribution systems resulted in a trade-off between integration within the firm and into wider customer and supplier networks.

Data were mainly obtained from the focal firm, Air Greenland. The protracted study period meant that the data were not as concentrated as they would have been had the analysis been performed over a shorter duration or had the focus been on one implementation process.

Extant research suggests that integration challenges when implementing IT systems are caused by differences in information needs between groups with different logics. The authors illustrate how data integration is also a crucial challenge when implementing IT systems.

Here we consider the various ways in which airlines integrate their business activities. The thin markets, long distances, poor infrastructure, and challenging terrain over which many airlines based in developing countries operate can make it difficult to reap the economies of scale, scope, and density that carriers in more developed nations enjoy. There also remain institutional barriers to cross border trade in airline services. As a response to this, airlines from developing regions “cooperate” in a number of ways. This may involve multinational ownership, code sharing, or joint ventures. The rationale for these actions, together with discussion of the outcomes of some of them, is considered here.

To investigate consumers’ perceptions of appearance and handle of the chest area and the lapel in men’s tailored jackets, both objective measurement using FAST and subjective assessment utilising semi‐structured interview were employed. It was found that objective measurement provides insufficient information to predict the tailorability if reliance is placed purely upon properties obtained from shell fabrics. Use of the fabric and interlining laminates, however, provides better prediction of tailorability, especially those aspects associated with appearance and shape retention. It was also found that objective measurement results do not agree with the subjective assessment results, particularly with regard to the subjective assessment of the female interviewees. It is suggested that thought should be given to devising a method of evaluating objective measurement results suitable to fabric and interlining laminates that can also take account of market trends directly related to consumer perception.

Garments are now becoming high class and automated. Using key face fabrics and interlining structure properties to predict the quality grade of fused composites has become an important subject in the pursuit of quick reaction of fabrics. The establishment of the ideal composite parameters for interlining and face fabrics allows us to know the ideal interlining for face fabrics sooner. Hence, this paper, through discriminate analysis and the scatter plot, successfully found the ideal composite condition range for interlining and face fabrics. Artificial neural network training was used for the structural prediction of a fused composites quality model. Model tests showed the presence of good prediction ability.

First of two papers which investigate the factors that influence drycleaning performance of commercially available pigskin apparel. Examines two drycleaning solvents and two drycleaning treatments on two colours of pigskin suede and two interlinings. Latent defects were found related to hide selection and processing which may affect apparel performance and consumer satisfaction. When the bond between leather and interlining was permanent, variation in shrinkage was reduced but distortion of garment parts may occur because of differential shrinkage. Pilling of one interlining was so severe it would interfere with overall performance of garments. Manufacturer's recommendation for selection of interlining was not a reliable predictor of performance.

To understand the thermal insulation of four common structures of sleeping bags and factors influencing the thermal insulation as well as the thermal comfort of people who use four kinds of sleeping bag structures.

Four samples corresponding to four common sleeping bag structures were made and their thermal properties were investigated through a combination of objective instrument measurement and subjective human subject tests.

The porosity of the samples and the length of the interlining had a main impact on the thermal resistances of the four sleeping bag structures. The thermal sensation ratings and the thermal resistances had good consistency. There was a strong correlation between human physiological parameters and thermal sensation evaluation. The male and female have significant differences in thermal sensation of different structures of sleeping bags.

Instrument measurement and human subject tests were combined to study the thermal properties of sleeping bag structures, which had little attention in the past in research fields.

The purpose of this paper is to optimally locate and size the FACTS device, namely, interline power flow controller in order to minimize the total cost and relieve congestion in a power system. This security analysis helps independent system operator (ISO) to have a better planning and market clearing criteria during any operating state of the system.

A multi-objective optimization problem has been developed including real power performance index (RPPI) and expected security cost (ESC). A security constrained optimal power flow has been developed as expected security cost optimal power flow problem which gives the probabilities of operating the system in all possible pre-contingency and post-contingency states subjected to various equality and inequality constraints. Maximizing social welfare is the objective function considered for normal state, while minimizing compensations for generations rescheduling and maximizing social welfare are the objectives in case of contingency states. The proposed work is viewed as a two level problem wherein the upper-level problem is to optimally locate IPFC using RPPI and the lower-level problem is to minimize the ESC subjected to various system constraints. Both upper-level and lower-level problem are solved using particle swarm optimization and The performance of the proposed algorithm is tested under severe line outages and has been validated using IEEE 30 bus system.

The proposed methodology shows that IPFC controls the power flows in the network without generation rescheduling or topological changes and thus improves the performance of the system. It is found that the benefit achieved in the ESC due to the installation of IPFC is greater than the annual investment cost of the device. ISO cannot achieve minimum total system cost by merely rescheduling generators. Instead of rescheduling, FACTS devices can be used for compensation by achieving minimum cost. IPFC can be used to compensate the congested lines and transfer cheaper power from generators to consumers.

Operational reliability, financial profitability and efficient utilization of the existing transmission system infrastructure has been achieved using single FACTS device. Instead of using multiple FATCS devices, if a single FACTS device like IPFC which itself can compensate several transmission lines is used, then in addition to the facility for independently controlled reactive (series) compensation of each individual line, it provides a capability to directly transfer real power between the compensated lines. Hence an attempt has been made in this paper to incorporate IPFC for relieving congestion in a deregulated environment. However, no previous researches have considered incorporating compensation of multi-transmission line using single IPFC in minimizing ESC. Thus, in this paper, the authors indicate how much the ESC is reduced by installing IPFC.