Milatović D., Nikolić D., Đurović D., 2010. Variability, heritability and correlations of some factors affecting productivity in peach. Hort. Sci. (Prague), 37: 79-87.Factors affecting productivity in peach, such as flower density, initial and final fruit set by open pollination, and yield per m length of shoot were studied in 40 cultivars during a three-year period. Significant differences among cultivars were found for all studied properties. The coefficients of variability were the lowest for initial fruit set and then for final fruit set and flower density; while they were the highest for yield. The relatively high values of heritability were found for flower density and yield. Significant correlation coefficients were found between initial and final fruit set, flower density and yield, as well as between final fruit set and yield. In areas with a higher risk of freeze damage the cultivars characterized by higher flower density and fruit set should be grown because they can provide more consistent yield potential. At the same time, these cultivars require more intensive pruning and fruit thinning to achieve quality fruit.

The main objective of this paper is to present the advantages of using Cost-Benefit analysis in energy efficiency projects implemented in public buildings, and to prove the hypothesis that Cost-Benefit analysis boosts the effectiveness and efficiency of the said type of projects. The paper offers theoretical and practical explanation of the implementation of Cost-Benefit analysis in the relevant area. Since energy efficiency projects in public buildings usually represent a part of a broader portfolio of similar projects and their implementation demands allocation of substantial financial resources, communities are often be interested in achieving maximal economic and non-economic benefits. This paper aims to demonstrate that Cost-Benefit analysis can represent an excellent contribution when attempting to select the projects for implementation within a broader portfolio of energy efficiency projects in public buildings. This hypothesis was demonstrated by putting a greater emphasis on non-economic benefits and the costs arising from implementation of the aforementioned types of projects. In addition, a practical test of this hypothesis was performed through the implementation of an energy efficiency portfolio in public buildings, worth several tens of millions of dollars - the Serbian Energy Efficiency Project. The paper concludes that the use of Cost-Benefit analysis can help us to effectively evaluate and manage projects of this type aimed at achieving maximum benefits for the community in question

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Climate change, through changes in temperature, precipitation, and frequency of extreme events, has influenced agricultural production and food security over the past several decades. In order to assess climate and weather-related risks to fruit and grape production in Serbia, changes in bioclimatic indices and frequency of the occurrence of unfavourable weather events are spatially analysed for the past two decades (1998–2017) and the standard climatological period 1961–1990. Between the two periods, the Winkler and Huglin indices changed into a warmer category in most of the viticultural regions of Serbia. The average change shift was about 200 m towards higher elevations. Regarding the frequency of spring frost, high summer temperatures and water deficit, the most vulnerable regions in terms of fruit and grape production are found alongside large rivers (Danube, Sava, Great and South Morava), as well as in the northern part of the country. Regions below 300 m are under increased risk of high summer temperatures, as the number and duration of occurrences increased significantly over the studied periods. The high-resolution spatial analysis presented here gives an assessment of the climate change influence on the fruit and grapes production. The presented approach may be used in regional impact assessments and national planning of adaptation measures, and it may help increase resilience of agricultural production to climate change.

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Sažetak: Svedoci smo vremena kada pandemija COVID-19 svojim prisustvom utiče na svakodnevni život pojedinca, time i na sport kao aktivnost ili delatnost kojom se ljudi bave. Međutim, iako su se brojni autori bavili problematikom COVID-19 sa aspekta sporta, imajući u vidu činjenicu da je sport kompleksan fenomen, ostavljeno je dosta prostora za dalja istraživanja o njihovoj povezanosti, odnosno uticaju COVID-19 na sport. U ovom istraživanju eksplorativnog karaktera, s obzirom da se odvija u uslovima aktuelne pandemije, u realnom vremenu, primenjena je deskriptivna, pretežno kvalitativna i kritička analiza sadržaja javno dostupnih, zvaničnih i objavljenih podataka i naučnih radova, kojima se na jasan način mogao ostvariti formulisani cilj istraživanja. Aktuelnost teme je neupitna i diktira je stvarnost u kojoj živimo. Predmet ovog istraživanja se upravo odnosi na uticaj COVID-19 na budućnost sporta, njegovu održivost razvoja, tj. oporavka. Cilj istraživanja predstavlja sveobuhvatno sagledavanje i razumevanje problema i dimenzija aktuelne pandemije COVID-19 u funkciji održivog razvoja sporta. Polazeći od predmeta i cilja istraživanja definisana su istraživačka pitanja, pri čemu se došlo do rezultata istraživanja koji ukazuju da je perspektiva školskog i vrhunskog sporta i uz napore resornih udruženja na zabrinjavajućem nivou, dok je segment rekreativnog sporta moguće održati na istom nivou uz preorijentaciju i usmerenost na bavljenje aktivnostima na otvorenom prostoru. Za sada nije uočeno da su strategije razvoja sporta redefinisane. Donešen je određen broj uredbi, preporuka i sl. što navodi da se u ovom momentu još uvek razmišlja o COVID-19, kao prolaznom problemu, gde bi se nakon završetka pandemije vratilo već postojećim strategijama razvoja i održivosti.