An elementary way to introduce a Perron-like integral

We give an alternative definition of integral at the generality of the Perron integral and propose an exposition of the foundations of integral theory starting from this new definition. Both definition and proofs needed for the development are unexpectedly simple. We show how to adapt the definition to cover the multidimensional and Stieltjes case and prove that our integral is equivalent to the Henstock-Kurzweil(-Stieltjes) integral

Czech machinery cluster and its role in sustainable development of Moravian-Silesian enterprises during the post-transformation era

The paper intends to contribute to the field of geographical economics by an extensive questionnaire survey carried out in Moravian-Silesian region, which represents one of territories of traditional industry in the Czech Republic. The purpose of this paper is to analyse and assess the co-operation among enterprises, educational institutions, and public administration from the perspective of sustainability in the Moravian-Silesian region during its post-transformation era. The article deals specifically with the Czech machinery cluster. The research question that lies behind the survey is as follows: Is the co-operation of entities present in the Czech machinery cluster beneficial to the parties involved? The contribution of the paper is in uncovering the role of this cluster in the sustainable development of Moravian-Silesian enterprises during post-transformation period. Since the Moravian-Silesian region is a typical old industrial region, which moreover underwent a difficult transformation process, there are numerous peculiarities in functioning of its enterprises. Machinery was traditionally one of the supportive pillars of regional industry and it is not surprising that the machinery cluster was created as the first one. Yet, regional characteristics lie behind specific trajectories towards economic sustainability. The above ways toward economic sustainability differ markedly from the concepts that are in vogue in developed western territories.Web of Science102art. no. 23

Perfect fluid tori orbiting Kehagias-Sfetsos naked singularities

We construct perfect fluid tori in the field of the Kehagias-Sfetsos (K-S) naked singularity representing spherically symmetric vacuum solution of the modified Ho\v{r}ava quantum gravity that is characterized by a dimensionless parameter $\omega M^2$, combining the gravitational mass parameter $M$ of the spacetime with the Ho\v{r}ava parameter $\omega$ reflecting the role of the quantum corrections. In dependence on the value of $\omega M^2$, the K-S naked singularities demonstrate a variety of qualitatively different behavior of their circular geodesics that is fully reflected in the properties of the toroidal structures. In all of the K-S naked singularity spacetimes the tori are located above an "antigravity" sphere where matter can stay in stable equilibrium position, that is relevant for the stability of the orbiting fluid toroidal accretion structures.Comment: 44 pages, 27 figures multi panel

A 200 km suspected impact crater Kotuykanskaya near Popigai, Siberia, in the light of new gravity aspects from EIGEN 6C4, and other data

We provide arguments in favour of impact origin of a 200 km suspected impact crater Kotuykanskaya near Popigai, Siberia, Russia. We use the gravity aspects (gravity disturbances, the Marussi tensor of the second derivatives of the disturbing geopotential, the gravity invariants and their specific ratio, the strike angles and the virtual deformations), all derived from the combined static gravity field model EIGEN 6C4, with the ground resolution of about 10 km and a precision of about 10 milliGals. We also use the magnetic anomalies from the model EMAG2 and emphasize the evidence of much deeper sources in the suspected area, constraining the impact origin of this structure.Web of Science101art. no. 609

Rozvoj venkova a rozvoj regionů: Společná zemědělská politika a regionální politika na jednom hřišti

Rozvoj venkova je stále více zdůrazňovanou součástí Společné zemědělské politiky EU, avšak není možné jej vnímat odděleně bez kontextu regionální politiky. Průnik v cílech a opatřeních rozvoje venkova společné zemědělské politiky i politiky regionální je zřejmý a je nutné podpořit snahy o synergii rozvojových aktivit. Cílem příspěvku je nastínění kontextu, prostorových vazeb, souvislostí i některých paradoxů politiky rozvoje venkova a regionální politiky v České republice.Rural development became in last decades independent development sphere. From the point of view of development relationships logic it is the process realized in context of regional development. Rural development as theme won and wins permanently better signification in common agricultural policy EU, however it is stressed also in the majority regional development documents. Cooperation between common agricultural policy and regional policy are important for maximal efficiency of rural development policy. Position of rural development and its standings among other policies is not completely clear. Competences of subjects engaged in rural development are quite complicated, not only in the Czech Republic but also in whole EU. Rural areas are specific: socially, economically, culturally and ecologically diversified territories

Online only: Which Czech young adults prefer online civic participation?

This study examined whether people who prefer online over offline civic participation differ from those who participate in both environments, who prefer offline participation, or do not participate. Using a cross-sectional sample of young adults (age 18-28) recruited in the Czech Republic (N = 720), we compared these four groups (defined by their types of civic participation) regarding their socio-demographic profiles, trust (social, individual, and in the media), relationship to politics (political interest, exposure to politics in the media, and internal political efficacy), and political ideology (left-right orientation, concern with environmental issues, and support for immigrants’ rights). Results showed that people who prefer online participation adhere to conservative political ideologies than people with other types of participation. Their relationship to politics is as positive as in the case of people active in both environments. No substantial differences in trust and socio-demographics were found

Role of school climate and personality in the development of Czech adolescents’ political self-efficacy

This study examined the effects of school climate (open classroom and positive student relationships) and personality dispositions (shyness and need for cognition) on adolescents' political self-efficacy. Data were collected in 2014 from 1,954 Czech ninth- and tenth-graders (mean age = 15.60). A multilevel analysis showed that school-level political self-efficacy predicted self-efficacy for local politics. However, schools and classrooms were rather homogeneous in terms of students’ mean political self-efficacy and students' self-reported acquisition of civic skills at school. Hence, school characteristics had only limited associations with adolescents' political self-efficacy. At the same time, students' political efficacy had a considerable association with lower shyness and higher need for cognition. These results suggest that the development of political efficacy at school goes beyond simple general influences of school environment and individual differences between students must be considered

Leadership in rural medicine: The organization on thin ice?

Objective. To explore the personal experiences of and conceptions regarding leading rural primary care in Northern Norway. Design. Qualitative content analysis of focus-group interviews. Setting. Lead primary care physicians in the three northernmost counties. Subjects. Four groups with 22 out of 88 municipal lead physicians in the region. Results. Three main categories were developed and bound together by an implicit theme. Demands and challenges included the wide leadership span of clinical services and public health, placed in a merged line/board position. Constraints of human resources and time and the ever changing organizational context added to the experience of strain. Personal qualifications indicates the lack of leadership motivation and training, which was partly compensated for by a leader role developed through clinical undergraduate training and then through the responsibilities and experiences of clinical work. In Exercising the leadership, the participants described a vision of a coaching and coordinating leadership and, in practice, a display of communication skills, decision-making ability, result focusing, and ad hoc solutions. Leadership was made easier by the features of the small, rural organization, such as overview, close contact with cooperating partners, and a supportive environment. There was incongruence between demands and described qualifications, and between desired and executed leadership, but nevertheless the organization was running. Leadership demonstrated a “working inadequacy”. Conclusion. Under resource constraints, leadership based on clinical skills favours management by exception which, in the long run, appears to make the leadership less effective. Leadership training which takes into account the prominent features of rural and decentralized primary care is strongly needed

Impacts of hot and cold spells differ for acute and chronic ischaemic heart diseases

BACKGROUND: Many studies have reported associations between temperature extremes and cardiovascular mortality but little has been understood about differences in the effects on acute and chronic diseases. The present study examines hot and cold spell effects on ischaemic heart disease (IHD) mortality in the Czech Republic during 1994–2009, with emphasis upon differences in the effects on acute myocardial infarction (AMI) and chronic IHD. METHODS: We use analogous definitions for hot and cold spells based on quantiles of daily average temperature anomalies, thus allowing for comparison of results for summer hot spells and winter cold spells. Daily mortality data were standardised to account for the long-term trend and the seasonal and weekly cycles. Periods when the data were affected by epidemics of influenza and other acute respiratory infections were removed from the analysis. RESULTS: Both hot and cold spells were associated with excess IHD mortality. For hot spells, chronic IHD was responsible for most IHD excess deaths in both male and female populations, and the impacts were much more pronounced in the 65+ years age group. The excess mortality from AMI was much lower compared to chronic IHD mortality during hot spells. For cold spells, by contrast, the relative excess IHD mortality was most pronounced in the younger age group (0–64 years), and we found different pattern for chronic IHD and AMI, with larger effects on AMI. CONCLUSIONS: The findings show that while excess deaths due to IHD during hot spells are mainly of persons with chronic diseases whose health had already been compromised, cardiovascular changes induced by cold stress may result in deaths from acute coronary events rather than chronic IHD, and this effect is important also in the younger population. This suggests that the most vulnerable population groups as well as the most affected cardiovascular diseases differ between hot and cold spells, which needs to be taken into account when designing and implementing preventive actions