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11.
Quality & Quantity - The article discusses the issue of innovation activities of companies in railway transport in Poland in the context of the development of tourism. Transport infrastructure...  相似文献   
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This study proposes an integrated simulation approach, which consists of a microscopic traffic simulation model, a vehicle dynamics model, and an emission estimation model, in order to estimate emissions based on more reliable vehicle performance measures. The vehicle performance measures such as engine power and engine speed significantly relate to the amount of emissions, and road curvatures and inclinations are the core inputs affecting these vehicle performance measures. Therefore, providing reliable vehicle performance measures reflecting the road geometric attributes is critical for a reliable emission estimation. This study proposes to use the microscopic traffic simulation model for generating vehicle trajectories, which is advantageous in modeling various traffic situations, and the vehicle dynamics model for producing the vehicle performance measures based on the vehicle trajectories. Finally, the outputs from the vehicle dynamics model are fed into the emission estimation model to compute emission measures. This study conducted a case-study using two road sections, one is a hypothesized road section, including various curvatures and inclinations with regular variations, and the other is a Kesselberg road section, which is an actual geometry in Bayern, Germany. The emission measures are estimated in these case-study road sections using both an existing simulation approach and the proposed integrated simulation approach. The difference between these two emission estimation approaches is discussed in terms of the emission measures, including fuel consumption, nitrogen oxides, and particulate matters.  相似文献   
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We introduce multiperiod mortgage loans, fixed interest rate, a lower bound constraint on newly granted loans, and a possibly slack collateral constraint, in an otherwise standard Dynamic Stochastic General Equilibrium (DSGE) model with housing. Our nonlinear estimation shows that all those features are important to understand the evolution of mortgage debt during the recent U.S. housing market boom and bust. The transmission of monetary policy becomes dependent on the housing cycle, with weaker effects when house prices are high or start falling sharply. Higher average loan duration makes monetary policy less effective, eventually leading to asymmetric responses to positive and negative monetary shocks.  相似文献   
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The aim of this article is to analyze the effect of a uniform minimum wage in Poland on youth employment in regional labor markets and to determine in which of the regions the effect is significant. The analyses are based on NUTS2 level in 1999–2012. The results point to a statistically insignificant parameter of minimum wage variable for the whole sample. However, after allowing the minimum wage parameter to vary across regions, we find that the relatively high ratio of minimum to average wages could be the factor limiting youth employment growth in less-developed regions in the southeast of Poland.  相似文献   
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Quality & Quantity - In Poland, as in many other countries, to measure inflation, expressed both by the CPI and HICP, the Laspeyres price index with weights from the base period is used. Thus...  相似文献   
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It is well known that central bank policies affect not only macroeconomic aggregates, but also their distribution across economic agents. Similarly, a number of papers demonstrated that heterogeneity of agents may matter for the transmission of monetary policy to macro variables. Despite this, the mainstream monetary economics literature has so far been dominated by dynamic stochastic general equilibrium models with representative agents. This paper aims to tilt this imbalance towards heterogeneous agents setups by surveying the main positive and normative findings of this line of the literature, and suggesting areas in which these models could be implemented. In particular, we review studies that analyse the heterogeneity of (i) households’ income, (ii) households’ preferences, (iii) consumers’ age, (iv) expectations and (v) firms’ productivity and financial position. We highlight the results on issues that, by construction, cannot be investigated in a representative agent framework and discuss important papers modifying the findings from the representative agent literature.  相似文献   
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Web-based permission marketing: Segmentation for the lodging industry   总被引:1,自引:0,他引:1  
Permission marketing is becoming an important tool in maintaining relationships with travelers via the Internet. Its growing importance can be seen in tourism marketing, specifically in the lodging industry. With an increase in industry use, the effectiveness of this technique needs assessment. This paper initiates this process by examining current methods used to collect contact information for the purpose of permission marketing. Three segments of the market are identified and compared based upon their willingness to supply contact information. Significant differences were found in socio-demographics, online habits, trip characteristics, and website design preferences. Implications for lodging marketers are presented and future research topics are discussed.  相似文献   
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The aim of this article is to evaluate the external and internal factors motivating the selection of business services to be outsourced by key meeting-industry (business tourism) players, with a particular focus on knowledge-intensive business services. The case-study method was adopted in the article to analyze the motivation behind outsourcing of knowledge-intensive business services by meeting venues and event companies in Krakow (Poland). The results confirm that event companies tend to subcontract out core services connected with the organization, promotion and/or management of events, event services, and technical support for events.  相似文献   
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