Using artificial neural network and multivariate analysis techniques to evaluate road operating conditions

Regional paved roads are low volume roads with a prevalence of heavy traffic. In the world, these roads concern about 80% of the total road network; however, the traffic that affects these roads is about 20%. Since regional roads are characterized by weak demand, budget for their management/maintenance is very low. This produces considerable difficulties in the choice of strategies for maintenance planning and scheduling. For this reason, the recurring topics of research in this field deal with typical roads issues and aim to develop low cost tools and methods. The study proposes a decision support system to evaluate regional paved roads operating condition in relation to the hydrogeological situation. In particular, the system allows to evaluate in a quick and easy manner, the operating conditions of the road, through low-cost tools (i.e. using low economic resources). This is very useful in the case of LVRs because administrations for these roads have a limited budget. The procedure is developed on a regional paved roads network based on more than 80 roads located in Southern Italy. Data is collected by direct surveys in the field and is integrated with cartography and information available in road agency records. From data analysis, obtained using two different techniques, an easy and quick use procedure is made. In particular, Model 1 is built through multivariate analysis and Model 2 using the artificial neural network (ANN) technique. The results show the validity of the two models in Regional paved roads operating conditions estimation in relation to hydrogeological situations of sites. Both models show good reliability. In particular, the first model (Model 1) is characterized by a high level of significance (p < 0.01) and by a coefficient of determination equal to 0.82. Comparative tests between the second model (Model 2) on which standard tests cannot be performed for obvious reasons, and the first model (Model 1). The results show that the ANN model (model 2), characterized by lower residual, simulates more accurately than the second (Model 1).     

Dreaming of the West: The power of the brand in Soviet Lithuania, 1960s–1980s

Abstract

The article reveals the interest in foreign trademarks observed in Lithuanian society from the 1960s through the 1980s, when the demand for brand names spread after Western culture reached the Soviet Union. The consumption of Western cultural products, or imitations thereof, became one of the key symbolic expressions of freedom in Soviet society. In Lithuania, the most popular clothes were those bearing fake trademarks, even though Soviet authorities attempted to prevent the desire for and the wearing of these garments through the use of ideological tools.     

Who Convinces Whom? Parent and Child Perceptions of Children's Engagement in Parental Purchase Decisions

Do children overestimate their engagement in parental purchase decisions? A systematic analysis of the articles enabled us to create a database of 149 cases where child and parent perceptions of children's engagement in parental purchase decisions were measured. The findings proved that there is congruence between children's and parents' perception of a child's engagement in most cases. Children's overestimation of their engagement in a parental decision to purchase products is likely the exception rather than the rule. The cases characterized as overestimations are related to product category and type of measured domain. (Children tend to overestimate their engagement more when the measures track participation or influence rather than decision independence.)     

Expert Evaluation of Diagnostic Instrument for Personal and Organizational Value Congruence

The article aims to evaluate the quality of a newly constructed diagnostic instrument for personal and organizational value congruence. To attain this, an expert evaluation was invoked. The selected experts evaluated the questionnaire scales and their constituent subscales as well as the eligibility of the contained statements for diagnosing of personal and organizational value congruence. It should be emphasized that the experts were provided a possibility of commenting on each of the statements, making observations and providing suggestions in regard to the statements, scales and subscales of the questionnaire. This article presents the analysis of the evaluation commentaries by the experts, basing on which the main drawbacks of the new instrument were identified and highlighted. Furthermore, a new diagnostic instrument, constructed in accordance with the results of the expert evaluation as applicable for personal and organizational value congruence is introduced as the main result of the research.     

New development: Between politics and strategic planning—the management of government priorities in Lithuania

ABSTRACT

How do political agendas impact on strategic planning practices? This article shows that recent changes to the framework for managing government priorities have made Lithuania’s strategic planning system more politically responsive by mobilizing political attention, leadership and state funding to major government commitments. However, these changes have not yet translated into any longer term outcomes because policy implementation practices did not change very much.     

Effects of responsible human resource management practices on female employees’ turnover intentions

This study focuses on the effects of socially responsible human resource management (SR‐HRM) practices on female employees’ turnover intentions and the moderating effect of supervisor gender on this relationship. With a sample of 212 female employees from eight different industries in Finland, the results indicate that SR‐HRM practices promoting equal career opportunities and work–family integration play a significant role in reducing women's turnover intentions. The study adds to the academic discourse of corporate social responsibility by highlighting the impact of the organizational‐level HRM determinants on the individual‐level outcome. In addition, supervisor gender makes a difference in the studied relationship: female supervisors have a stronger and more significant impact on the relationship than male supervisors. Our findings suggest that organizational measures which support work–family integration should be taken seriously to decrease female employees’ turnover intentions. Male supervisors could adopt some gender‐incongruent leadership behaviors, such as individualized emotional concern and caring when dealing with female employees. In the future, other gender combinations in the supervisor–employee relationship would merit research.     

The volatility of temperature and pricing of weather derivatives

We propose an Ornstein–Uhlenbeck process with seasonal volatility to model the time dynamics of daily average temperatures. The model is fitted to approximately 45 years of daily observations recorded in Stockholm, one of the European cities for which there is a trade in weather futures and options on the Chicago Mercantile Exchange. Explicit pricing dynamics for futures contracts written on the number of heating/cooling degree-days (so-called HDD/CDD futures) and the cumulative average daily temperature (so-called CAT futures) are calculated, along with a discussion on how to evaluate call and put options with these futures as underlying.     

Consumer obfuscation by a multiproduct firm

This article shows that a multiproduct firm has incentives to obfuscate its products by using search costs to induce consumers to search through its products in a particular order. The consumers who draw high valuations of the first product terminate their search earlier than the consumers who draw low valuations. Thus, the firm has incentives to raise the price of the earlier searched product. The optimal search cost for an obfuscated product is such that consumers inspect the product only if the match values of the previously searched goods have been very poor.