In this paper, we consider the asymptotic behaviour of the expectation of the number of vertices of a uniform random spherical disc-polygon. This provides a connection between the corresponding results in spherical convexity, and in Euclidean spindle-convexity, where the expectation tends to the same constant. We also extend the result to a more general case, where the random points generating the uniform random disc-polygon are chosen from spherical convex disc with smooth boundary.
Abstract
There is a long-standing debate among scholars over the convergence versus divergence of the regional growth rate of per capita income in India. The present study tries to resolve this debate in light of the latest available data by using Beta-convergence analysis in a panel data framework. The results indicate the presence of unconditional divergence and conditional convergence in the case of both inter-state and inter-region analysis, which shows that the unconditional divergence may be due to the presence of omitted variable bias. The results also show that the primary sector is associated with the reduction of interstate and inter-region income inequality, while the growth of the tertiary sector is correlated with increasing interstate and inter-region income inequality. Therefore, the findings of the study imply that the phenomenon of service-led growth in the post-reform period was accompanied by the widening gap in the growth of various states and regions of India.
Abstract
The relevance of the subject under study is conditioned by numerous technological problems of providing livestock enterprises of the Republic of Kazakhstan with quality equipment for animal feeding and the associated need to develop and implement dosers for the preparation of compound feed mixture. This study introduces an innovative approach through the development and analysis of a novel dosing auger with an active return channel, which distinguishes itself from existing models by enhancing the precision and efficiency of feed preparation processes. The purpose of this study was to investigate the key parameters of the dosing auger with an active return channel for its further use in agricultural enterprises for preparation of compound feed. The findings of this study emphasise the significance of compliance of current trends in the improvement of prepared feed with the established zootechnical requirements from the standpoint of optimising the technological equipment used in this process. The key aspects of feed dosing sequence when using volumetric and mass dosing methods were considered. The main advantages of auger-in-auger dosers that distinguish them from all other types of dosers were described.
Az okostelefon alkalmazásának hatása testnevelésórán
The effect of smartphone use in the physical education class
Háttér és célkitűzések: Jelen tanulmányban azt vizsgálták a szerzők, hogy a testnevelésórai okostelefon-használat hogyan hat a pszichomotoros teljesítményre, az észlelt motivációs környezetre, valamint a motivációra. Egy négyhetes időtartamú intervenciós program keretében használhattak okostelefont a tanulók testnevelésórán. A kutatás célja annak felmérése volt, hogy az okostelefon-alkalmazás milyen hatást gyakorol a teljesítményre és a motivációra. Módszer: A kutatásban középiskolás tanulók vettek részt (n = 85). 21 fiú (24,7%) és 64 lány (75,3%), az átlagéletkoruk 16,7 év volt. A kutatás során a tanulók egy 12 tanórás projektben vettek részt, ahol a kísérleti 1 csoport okostelefont használhatott, míg a kísérleti 2 csoportban nem volt eszközhasználatra lehetőség. A vizsgálat során 20 m-es ingafutás teszttel (pszichomotoros, állóképességi teszt) vizsgálták a kutatók a teljesítmény változását, az Észlelt Motivációs Környezet a Sportban (Perceived Motivational Climate in Sport Quiestionnaire-2/PMCSQ-2) kérdőívvel az észlelt motivációs környezet alakulását, míg a motiváció változását a Sport Motivációs Skálával (Sport Motivational Scale/SMS). Eredmények: Az eredmények azt mutatják, hogy abban a csoportban, ahol okostelefont használtak a tanulók, jelentősen javult a teljesítményük, a tanulók az intervenció során egyre nagyobb távokat teljesítettek a futások alkalmával, illetve egyre hosszabb időt is választottak. A tanulók feladatorientációja, valamint az intrinzik motivációja is növekedett. Az okostelefont nem használó csoportban is javult a teljesítmény az intervenció hatására, ugyanakkor az volt tapasztalható, hogy az Ego (én) orientáció növekedett, illetve nőtt a motivációhiány is a projekt végére. Következtetések: Az eredmények alapján elmondható, hogy a testnevelés tanításában pozitív hatása van az eszközhasználatnak, növeli a tanulók teljesítményét, valamint motivációjukat.
Abstract
Cognitive ability is increasingly recognized as a significant factor influencing household portfolio decisions. However, different cognitive abilities, such as numeracy, fluency and recall, may yield different investment results. The aim of this paper is to empirically examine the associations of three cognitive abilities (numeracy, fluency and recall) with household portfolio composition using Survey of Health, Aging and Retirement (SHARE) data across 16 European countries and the multinomial logit model. Our empirical analyses focus on the impacts of differences in country characteristics, specifically the level of economic development and the existence of a national health system (NHS).
The results indicate that numeracy and fluency have positive impacts on the decision to hold safe and relatively risky assets, as well as fully diversified portfolios in developed countries, but have no significant effects in emerging countries. Additionally, all three cognitive abilities positively influence the decision to hold fully diversified portfolios in the countries with NHS, while no significant effects are observed in the countries without NHS.
Our findings reveal a decreased impact of cognitive abilities on portfolio types in the emerging countries and the non-NHS countries. Notably, a significant and positive correlation is found between the holding of no financial assets in both non-NHS countries and advanced countries. One important implication of this study is that marketing strategies of financial advisors should take into account household cognitive abilities, as well as differences in economic development among countries and the presence or absence of NHS.
Abstract
We investigated the determinants of changes in agricultural technology in Vietnamese rice-growing households. The double-hurdle estimation developed in this study proved to be an efficient method for determining how and to what extent changes in agricultural technology had been influenced by various factors while also allowing correlation between farmers' choices. We found evidence of a persistent increase in the use of improved seeds and machinery. In contrast, the previous upward trend in the use of fertilisers and pesticides was recently reversed. Farmers' decisions to adopt and use these four agricultural technologies are highly correlated with farm size, input and output prices, and macroeconomic conditions. Our findings also confirm a simultaneous relationship between the decisions to apply agricultural practices. When promoting new agricultural technologies, follow-up policy interventions should account for these characteristics of individual smallholders' decisions.
Abstract
This paper attempts to identify the determinants of foreign direct investment (FDI), focusing especially on terrorism and keeping in mind that FDI is one of the key economic growth engines. The main goal of this paper was to determine the correlation between terrorism and investment activities. The method used is a dynamic panel data model (System 2 step-GMM estimator), based on a sample covering a total of 36 OECD economies in the period from 2005 to 2018. The findings indicate that terrorist incidents and economic, institutional, and natural variables have different impacts on FDI in the OECD Member countries. The research found a statistically significant impact of terrorist incidents and natural disasters and a strong impact of economic and institutional variables.
Előkelő hun kori temetkezés Budapestről, egy késő római erődfal árnyékából
Biorégészeti adatok a Kárpát-medence hun megszállásának korai szakaszához
Hun Period Elite Burial from Budapest, in the shadow of a Late Roman fort wall: Bioarchaeological Data on the Early Phase of Hun Occupation in the Carpathian Basin
Absztrakt
A dolgozat témája a 2020 nyarán talált, az aquincumi legiotáborral átellenben fekvő, Rákos-pataki római kori erőd déli falának előterében eltemetett, kora népvándorlás korra keltezhető két temetkezés. Az erőd déli fala és az erődöt övező védőárok között elhelyezkedő sírokat egymás alá, egy korábbi, félig feltöltődött, római kori gödörbe ásták bele. A felső sír egy ÉNy–DK-i tájolású, melléklet nélküli férfit rejtett, ezzel ellentétben az alsó, É–D-i irányítású harcos férfi sírja több szállal kapcsolódik mind a sztyeppei, mind a többi Kárpát-medencei hun korra keltezhető sírhoz. A rétegtani megfigyelések mellett a csontanyagon végzett 14C vizsgálatok eredményei is alátámasztják a két váz összetartozását. Feltételezhető, hogy a harcos az újonnan beköltöző, Kelet-Európából érkező népességhez, a hun ellenőrzést és befolyást gyakorló elit tagjaihoz tartozhatott, azonban a provinciális eredetű szokások utalhatnak a rómaiakkal kapcsolatban álló foederati csoportokra is. Emellett közelebbi genetikai rokonságot mutat a kaukázusi népességekkel, így felmerül a kérdés, hogy az alánoktól vagy a hozzájuk genetikailag kapcsolódó népektől származott-e.
Abstract
Paste formulations of Volvariella volvacea (VV) were developed for its shelf-life enhancement. Egg stage fruiting bodies of mushrooms were used for preparation of salted, spiced, and their fermented pastes. Fermented paste formulations were developed using inoculation with Lactobacillus rhamnosus GG at 0.5% (w/w) and incubation for 2 days at 35 ± 2 °C. The unfermented VV paste was preserved with sodium benzoate of 0.065%, while fermented formulations were kept devoid of any chemical preservative. All formulations were packed in glass jars and retort bags, and thereafter treated in boiling water bath for one hour. The spiced, fermented VV paste scored highest in sensory evaluation and maximum crude protein and moisture contents, while lowest in contents of ash, fat, crude fibre, and carbohydrates. The fermented (salted and spiced) VV pastes showed variation in pH at 4 °C. Shelf life of 56 days was observed for fermented VV paste stored in glass jars under refrigerated conditions. The antioxidant analysis revealed that DPPH radical scavenging activity of fermented paste formulations increased significantly up to 21 days followed by gradual decrease until the 56th day, while total phenolic content of all paste formulations decreased with storage time. Hence, fermented spiced paste showed enhanced nutritive and antioxidative potential and shelf life up to 56 days.
Abstract
Recent research has suggested that unconditional convergence no longer exists. Thus, this study examined the income convergence among 11 Central and Eastern European (CEE-11) countries that joined the European Union in/after 2004 and Europe's four largest economies (Germany, France, the United Kingdom, and Italy) by using panel data from 1994 to 2019. For this purpose, it employed the beta (β) and sigma (σ) convergence approaches to analyze the dynamics of economic growth. Based on the findings, in 1996, the four largest European economies had a higher capital–labour ratio and GDP growth than CEE-11. However, by 2019, the patterns reversed. As for the regression results, there was strong evidence of unconditional β convergence between 1999 and 2019, at an annual rate of 11%, with the σ convergence and the fixed effect models further supporting income convergence. Moreover, although brief divergence occurred during various financial crises, the overall trend was a significant convergence of CEE-11 with Europe's four largest economies through higher relative GDP growth. This study contributes to the economic growth theory of income convergence across countries and highlights the importance of regional integration in enabling sustainable catch-up growth.
