A Spanner for the Day After

We show how to construct $(1+\varepsilon)$-spanner over a set $P$ of $n$ points in $\mathbb{R}^d$ that is resilient to a catastrophic failure of nodes. Specifically, for prescribed parameters $\vartheta,\varepsilon \in (0,1)$, the computed spanner $G$ has $O\bigl(\varepsilon^{-c} \vartheta^{-6} n \log n (\log\log n)^6 \bigr)$ edges, where $c= O(d)$. Furthermore, for any $k$, and any deleted set $B \subseteq P$ of $k$ points, the residual graph $G \setminus B$ is $(1+\varepsilon)$-spanner for all the points of $P$ except for $(1+\vartheta)k$ of them. No previous constructions, beyond the trivial clique with $O(n^2)$ edges, were known such that only a tiny additional fraction (i.e., $\vartheta$) lose their distance preserving connectivity. Our construction works by first solving the exact problem in one dimension, and then showing a surprisingly simple and elegant construction in higher dimensions, that uses the one-dimensional construction in a black box fashion

A közös ős nyomában: modern nyugati közgazdasági gondolkodás és az iszlám hagyomány

This scientific essay aims to examine the relationship between Western mainstream economics and its Islamic counterpart. It shows that the creation of Islamic economics is a new scientific program, and representatives of this discipline do not agree on its methodological foundations. Islamic economics does not make a distinction between normative and positive scientific attitudes and sets the influence of human behavior as one of its important goals. To prove that there is potential for future convergence the author argues that the „Schumpeterian gap” in history of economic thought does not exist. Analysing the thoughts of Ibn Khaldun, the paper sets the ground for a new paradigm by representing Khaldun as a common ancestor of Western and Islamic economics

Does VAT Cut Appear on the Menu? The Consumer Price Impact of Hungarian VAT Decreases of 2016-2017

To understand the economic impacts of VAT changes the passthrough to consumer prices should be analyzed. The main objective of the study is to examine the passthrough with the rarely used method of synthetic controls for Hungarian VAT changes in 2016-2017. Synthetic price indices are created from the price indices of the same consumer expenditure categories of different European countries. The study finds almost full passthrough in case of pork and chicken while the passthrough is only partial for fresh milk and eggs. The primarily analyzed Hungarian VAT changes of 2016-2017 have not been reflected in the consumer prices of the restaurant sector. The price impacts for food items are in line with the experiences of the Romanian decrease of VAT in 2015. Analyzing the earlier Hungarian and international passthrough rates of the restaurant sector with the synthetic control method we can state that this sector is characterized by strong asymmetric passthrough. VAT increases are fully transferred to consumer prices while this is not the case for VAT decreases

Szerepel-e az áfacsökkentés az étlapon? A 2016-2017-es magyarországi áfacsökkentések árhatásai

To understand the economic impacts of VAT changes the passthrough to consumer prices should be analyzed. The main objective of the study is to examine the passthrough with the rarely used method of synthetic controls for Hungarian VAT changes in 2016-2017. Synthetic price indices are created from the price indices of the same consumer expenditure categories of different European countries. The study finds almost full passthrough in case of pork and chicken while the passthrough is only partial for fresh milk and eggs. The primarily analyzed Hungarian VAT changes of 2016-2017 have not been reflected in the consumer prices of the restaurant sector. The price impacts for food items are in line with the experiences of the Romanian decrease of VAT in 2015. Analyzing the earlier Hungarian and international passthrough rates of the restaurant sector with the synthetic control method we can state that this sector is characterized by strong asymmetric passthrough. VAT increases are fully transferred to consumer prices while this is not the case for VAT decreases

Szerepel-e az áfacsökkentés az étlapon? A 2016-2017-es magyarországi áfacsökkentések árhatásai

To understand the economic impacts of VAT changes the passthrough to consumer prices should be analyzed. The main objective of the study is to examine the passthrough with the rarely used method of synthetic controls for Hungarian VAT changes in 2016-2017. Synthetic price indices are created from the price indices of the same consumer expenditure categories of different European countries. The study finds almost full passthrough in case of pork and chicken while the passthrough is only partial for fresh milk and eggs. The primarily analyzed Hungarian VAT changes of 2016-2017 have not been reflected in the consumer prices of the restaurant sector. The price impacts for food items are in line with the experiences of the Romanian decrease of VAT in 2015. Analyzing the earlier Hungarian and international passthrough rates of the restaurant sector with the synthetic control method we can state that this sector is characterized by strong asymmetric passthrough. VAT increases are fully transferred to consumer prices while this is not the case for VAT decreases

Does VAT Cut Appear on the Menu? The Consumer Price Impact of Hungarian VAT Decreases of 2016-2017

To understand the economic impacts of VAT changes the passthrough to consumer prices should be analyzed. The main objective of the study is to examine the passthrough with the rarely used method of synthetic controls for Hungarian VAT changes in 2016-2017. Synthetic price indices are created from the price indices of the same consumer expenditure categories of different European countries. The study finds almost full passthrough in case of pork and chicken while the passthrough is only partial for fresh milk and eggs. The primarily analyzed Hungarian VAT changes of 2016-2017 have not been reflected in the consumer prices of the restaurant sector. The price impacts for food items are in line with the experiences of the Romanian decrease of VAT in 2015. Analyzing the earlier Hungarian and international passthrough rates of the restaurant sector with the synthetic control method we can state that this sector is characterized by strong asymmetric passthrough. VAT increases are fully transferred to consumer prices while this is not the case for VAT decreases

Perception of healthy eating among romanian adults

Background: Totaling about 60% of all causes of death, chronic illnesses are the main cause of global mortality. Unhealthy behaviors, such as unbalanced eating or insufficient physical activity, can trigger metabolic changes, manifested by hypertension, high blood sugar, hyperlipidemia, obesity. These changes are grouped into the category of metabolic risk factors. Over time, these factors can cause cardiovascular diseases associated with a high mortality rate. Aim of the study: To evaluate the perception of healthy eating in a Romanian population. Material and methods: We applied a validated online questionnaire aimed to investigate people’s attitude towards diet and their motivation regarding food consumption in ten countries, based on an international project. For the present paper, we evaluated a Romanian sample of 821 adult respondents. Results: Most of the subjects (82.82%) were from an urban area, and 68.94% were women. Regarding the prevalence of chronic diseases, 3.53% of participants had cardiovascular disease, 6.69% had high cholesterol levels, 7.18% were obese, and 6.57% were suffering from high blood pressure. Significant correlations have been identified between calorie count, excessive sugar and salt consumption, gender variables, cardiovascular disease, obesity, and high blood pressure. Also, tradition is very important in relation to eating behaviors, being highly correlated with obesity. The general direction of answers was correct, even if half of the questionnaire items were formulated in a ‘negative’ way, and disagreement is needed for a consistent response with a correct perception of healthy diets. The overall perception of healthy eating was consistent with scientific information in the field. Conclusion: Women are generally better informed than men regarding healthy eating. Also, there is a possible conflict between traditional food-related cultural values and modern nutritional guidelines based on scientific information.info:eu-repo/semantics/publishedVersio