Seasonal decomposition and forecasting of telecommunication data: A comparative case study

In this paper, forecasting models for the monthly outgoing telephone calls in a University Campus are presented. The data have been separated in the categories of international and national calls as well as calls to mobile phones. The total number of calls has also been analyzed. Three different methods, namely the Seasonal Decomposition, Exponential Smoothing Method and SARIMA Method, have been used. Forecasts with 95% confidence intervals were calculated for each method and compared with the actual data. The outcome of this work can be used to predict future demands for the telecommunications network of the University.     

CORRUPTION AND FOREIGN DIRECT INVESTMENT: A PANEL GRAVITY MODEL APPROACH

This paper investigates the relationship between corruption and foreign direct investment (FDI) in the case of 15 transition countries by using a panel gravity model approach and suggests that corruption does not deter FDI.     

Past price ‘memory’ in the housing market: testing the performance of different spatio-temporal specifications

Recent methodological developments provide a way to incorporate the temporal dimension when accounting for spatial effects in hedonic pricing. Weight matrices should decompose the spatial effects into two distinct components: bidirectional contemporaneous spatial connections; and unidirectional spatio-temporal effects from past transactions. Our iterative estimation approach explicitly analyses the role of time in price determination. The results show that both spatio-temporal components should be included in model specification; past transaction information stops contributing to price determination after eight months; and limited temporal friction is exhibited within this period. These findings highlight the decidedly non-linear temporal patterns of such information effects.     

Governance and foreign direct investment: a panel gravity model approach

This paper investigates the link between governance and foreign direct investment in the case of 14 transition countries by using a panel gravity model approach in two alternative ways. First, the level of governance in the target country is studied. Second, the absolute difference in the governance level between the source and target country is investigated. In both cases the results suggest that the lack of good governance does not deter, in fact it encourages, foreign direct investment.     

How Useful Are the Strategic Tools We Teach in Business Schools?

Strategic tools are indispensible for business and competitive analysis. Yet we know very little about managers' internal logic as they put these tools into practical use. We situate our study in a business school context using action learning prior to the manifestation of practice to complement our understanding of practice. Using Personal Construct Theory and Repertory Grids, our mid‐range theorizing showed that, contrary to current thinking about strategic tools, managers think in dualities (often paradoxically) and have a preference for multiple‐tools‐in‐use, tools that provide different perspectives, peripheral vision, connected thinking, simultaneously help differentiate and integrate complex issues, and guide the thinking process. These findings are important for designing better tools and the nurturing of critical managerial competencies needed for a complicated world. Our study's focus also has wider implications for scholars as we see our own material evaluated by those who will put these lessons into practice.     

Valuing Aircraft Noise: Stated Choice Experiments Reflecting Inter-Temporal Noise Changes from Airport Relocation

The relocation of Athens Airport provided a rare experimental context in which residents experienced significant changes in noise levels due to the introduction or removal of aircraft noise. This paper reports the results from surveys around both airport locations, using stated choice experiments to estimate values for aircraft noise. The respondents were offered actual inter-temporal noise change scenarios rather than hypothetical variations, which is uncommon in the literature, incorporating the presence or absence of an airport and other relevant transport attributes that also changed with the airport relocation. Whilst there is some variation in the valuation of the airport closure and opening, when these values are adjusted to reflect the actual change in decibels, there is remarkably little difference between the old and new airports. However, a significant variation in aircraft noise values is identified between different areas, with respect to education and to a lesser extent income. Our preferred estimate of the monthly household willingness to pay for terminating aircraft noise exposure is 13.12€ and for avoiding the onset of aircraft noise is 9.53€.     

Planning policy,housing density and consumer preferences

Due to a combination of government planning policies and market pressures in England in the period 2000–2008, there was an increase in the construction of flats and high-density developments and a decline in the construction of houses. In this paper, an analysis of the effects of these policy constraints is undertaken. Using hedonic pricing models, we test for a non-linear relationship between house prices and residential density in England. Consumers prefer houses over flats and detached properties over semi-detached and terraced (i.e. lower density suburban areas). However, both low-density, detached-dominant areas and high-density, flat-dominant areas attracted a premium over medium density areas and the relative size of these price differences vary between different housing market areas. In cities outside London, we consistently see a convex relationship between price and density, whereas a concave relationship between price and density is consistently observed in London. This suggests a different form of relationship between density and house prices in large urban conurbation areas, compared to more typical provincial cities. The conclusions we draw are that in the correct context, high density may be viewed positively but a single planning policy is not appropriate and it should be tailored to suit local market needs.     

Modernizing government accounting standards in Greece: a case of ‘garbage can’ decision-making

This paper examines the standard-setting process during the recent reform of government accounting standards in Greece. The process is viewed through the lens of the ‘garbage can’ model, informed by interviews, informal discussions and archival data. Findings indicate a lack of effective monitoring of the process by politicians and external lenders (the ‘Troika’), and an outcome that favoured the bureaucrats and consultants involved.     

Berth scheduling by customer service differentiation: A multi-objective approach

In this paper the discrete and dynamic berth allocation problem is formulated as a multi-objective combinatorial optimization problem where vessel service is differentiated upon based on priority agreements. A genetic algorithms based heuristic is developed to solve the resulting problem. A number of numerical experiments showed that the heuristic performed well in solving large, real life instances. The heuristic provided a complete set of solutions that enable terminal operators to evaluate various berth scheduling policies and select the schedule that improves operations and customer satisfaction. The proposed algorithm outperformed a state of the art metaheuristic and provided improved results when compared to the weighted approach.