O OBRAZOVANJU S MORALNOG GLEDIŠTA: SUVREMENO OBRAZOVANJE I ETIKA

Virtue ethics is an ethical theory that, when taken as a system, has to include an elaboration of the purpose of education itself. The main goal of this theory is to show in which ways education forms our characters and prescribes the moral and intellectual values of one culture. This thought originates all the way back from Aristotle, who argued that the goal of the state is to make its people educated, and by doing so, virtuous. Keeping that in mind, this paper analyzes contemporary views on the distinction of normativity of educational institutions and their actuality; that is to say, it goes from the normative standpoint in which it begs the question of what education should be, to the point which is concerned with the question of what education actually is. The paper presupposes an ethical theory, such as theory of virtue, as playing a role in this, which allows the topic to have a normative ground that could hold a metaethical model of the self and the other. Upon giving the principles of education, my purpose is to show that the education we have today does not completely answer all of the criteria set by the normativity aspect. Simply put, ethical ground leaves place for its applicability; thus, from this ground I would like to conclude that the education that is based on institutions which are governed by ideology will prove to be against the goal of education itself, and that is the forming of the excellence in character

Two new mesophilous oriental hornbeam communities from the northern Dinaric Alps (Bosnia and Herzegovina)

The paper describes two new mesophilous communities of oriental hornbeam (Carpinus orientalis) scrub from the northern Dinaric Alps in Bosnia and Herzegovina (B&H). While oriental hornbeam is mainly considered to be a part of thermophilous forests and scrub, numerical analysis of 103 relevés of C. orientalis dominated scrub from B&H has shown that two new, rather mesophilous, communities thrive on calcareous bedrock of NW B&H. They are mainly coppices that present secondary successional stages of mesotermic forest vegetation in this region. Association  Epimedio alpini-Carpinetum orientalis ass. nova hoc loco is related to Illyrian oak-hornbeam forests of Erythronio-Carpinion betuli, while Asplenio scolopendrii-Carpinetum orientalis ass. nova hoc loco is linked to Balkan submediterranean ravine forests of Ostryo-Tilion. Although these two associations were recorded only in the NW B&H, their distribution is potentially larger, as their source communities are relatively common throughout the Dinaric Alps, so the information about their distribution, vertical structure, and syndynamic relations could be very useful in a national scale forest management and nature conservation

Hydrogen storage in a layered flexible [Ni2(btc)(en)2]n coordination polymer

[Ni2(btc)(en)2]n coordination polymer exhibits a layered two-dimensional structure with weak interaction between the layers. Correlation of experimental measurements, DFT calculations and molecular simulations demonstrated that its structural features, primarily the inherent flexibility of the layered polymeric structure, lead to improved hydrogen storage performance at room temperature, due to significant enhancement in isosteric heats of hydrogen adsorption. Volumetric measurements of hydrogen adsorption at room temperature show up to 0.3 wt.% hydrogen absorbed at 303 K and 2.63 bar of hydrogen pressure, with isosteric heats of adsorption of about 12.5 kJ mol−1. Predicted performance at room temperature is 1.8 wt.% at 48 bar and 3.5 wt.% at 100 bar, better than both MOF-5 and NU-100, with calculated values of isosteric heats for adsorption of hydrogen in 8–13 kJ mol−1 range at both 77 K and 303 K. Grand canonical Monte Carlo calculations show that this material, at 77 K, exhibits gravimetric hydrogen densities of more than 10 wt.% (up to 8.3 wt.% excess) with the corresponding volumetric density of at least 66 gL−1, which is comparable to MOF-5, but achieved with considerably smaller surface area of about 2500 m2 g−1. This study shows that layered two-dimensional MOFs could be a step towards MOF systems with significantly higher isosteric heats of adsorption, which could provide better room temperature hydrogen storage capabilities.This is the peer reviewed version of the following article: Blagojević, V.A., Lukić, V., Begović, N.N., Maričić, A.M., Minić, D.M., 2016, “Hydrogen storage in a layered flexible [Ni2(btc)(en)2]n coordination polymer”, International Journal of Hydrogen Energy, http://dx.doi.org/10.1016/j.ijhydene.2016.08.20

Influence of platinization of mechanically activated nuclear grade graphite powders on the hydrogen adsorption process

Non-activated powder of nuclear grade graphite and powders of nuclear grade graphite that were milled for 10, 20 and 30 minutes are doped with 0.03% of platinum. XRD analysis of injtial and activated graphite powders was used for structural characterization. Hydrogen adsorption perfonned in isothermal conditions showed that platinization of powder samples of nuclear grade graphite decreases time needed for reaching adsorbent saturation during hydration. Simultaneously it was shown that platinization, due to the hydrogen spillower effect, increases adsorption capacity in a function of mechanical activation duration

Softversko rešenje za određivanje čitljivosti analognih vizuelnih pokazivača sa kružnom skalom

Verifikovano tehničko rešenj

How to motivate policy makers to face demographic challenges?

If we want to understand the deeper truth, or intend to interpret phenomena through the perception of a specific population, a more holistic perspective might be necessary. By applying foresight exercise, some new patterns might be discovered and shifts in study aspects inhibited. Such an approach intends to give meaning to future perceptions, expectations and fears of experts, decision makers and civilians. Its activities are designed to address critical questions, which might significantly shape the future of a country in the coming years. Foresight exercise reinforces thinking about what future steps should be taken, if a specific scenario becomes reality. Personal life stories based on binary opposition of the futures of a country can be used to unambiguously show the policy makers all the relevant implications that different futures might have regarding fertility, migration, population ageing, human capital and labour market in Serbia in the forthcoming period. Furthermore, it seems that such foresight exercise, as a qualitative approach, can provide additional insight into quantitative methods of forecasting demographic future of a country

Uticaj proteaze dodate u hranu i pola na randman i konformaciju trupova tovnih pilića

This paper presents research results on the effect of protease on the dressing percentage of conventionally dressed carcass and body conformation in broiler chickens. Broiler diet was supplemented with 0.2% protease (group E-I) and 0.3% protease (group E-II), and protein content in the feed was reduced by 4% (E-I) and 6% (E-II) through a decrease in soybean meal content. Fast-growing Cobb 500 broilers were used for a 63-day fattening trial. Body conformation measurement included absolute carcass conformation measures (metatarsus length, keel length, breast depth, breast angle, thigh girth) and relative body conformation measures - conformation indices (body weight/metatarsus length, body weight/keel length, body weight/breast depth, body weight/thigh girth). Results showed a significant effect of sex on the dressing percentage of conventionally dressed carcass and all body conformation measures, whereas diet had a significant effect on the dressing percentage of conventionally dressed carcass and breast angle values.U radu su prikazani rezultati ispitivanja enzima proteaze na randman klasično obrađenog trupa i konformaciju trupova pilića u tovu. Enzim proteaza dodat je u hranu za piliće u tovu u koncentraciji 0,2% (O-I grupa), odnosno 0,3% (0-II grupa), uz istovremeno smanjivanje sadržaja ukupnih proteina u smešama za 4% (OI grupa), odnosno 6% (O-II grupa), preko smanjenog učešća sojine sačme. U ogledu je korišćen brzorastući hibrid Cobb 500, a tov pilića trajao je 63 dana. Za ocenu konformacije trupova utvrđene su apsolutne mere konformacije trupa (dužina piska, dužina kobilice, dubina grudi, grudni ugao, obim bataka) i relativne mere konformacije trupova - indeksi mera konformacije (telesna masa/dužina piska, telesna masa/dužina kobilice, telesna masa/dubina grudi, telesna masa/obim bataka). Rezultati istraživanja su pokazali da je pol pilića imao značajan uticaj na randman klasično obrađenog trupa i na sve mere konformacije trupova, a da je ishrana pilića različitim formulacijama obroka imala signifikantan efekat na randman klasično obrađenog trupa i vrednost grudnog ugla pilića

Nutrition-related aspects of ascites in poultry

Pulmonary hypertension syndrome or ascites is a complex problem in poultry production. This disease has multiple causes, including genetic factors (genotype, sex) and non-genetic factors (altitude, improper egg incubation, ambient conditions in the poultry house, diet, etc.). Results from numerous studies have shown that improper diet and its interaction with other factors are among major reasons for the incidence of ascites symptoms. The objective of this study was to highlight major nutritional aspects related to pulmonary hypertension syndrome in broiler chickens. Therefore, particular attention should be paid to the dietary levels of antioxidant compounds, some minerals, energy and protein, feed forms, type of diet, and feed supplementation with ingredients which reduce the incidence of ascites

Uticaj enzima proteaze i dužine trajanja tova na randman klanja tovnih pilića

This study evaluates the effect of different crude protein levels in broiler diets supplemented with 0.2% and 0.3% protease enzyme (Ronozyme Pro Act) on dressed carcass weight and dressing percentage during two fattening periods (49 and 63 days). The fast-growing strain Cobb 500 was used. At the end of the fattening trial i.e. at 49 and 63 days, 10 male and 10 female birds were randomly sacrificed from each experimental group to determine body weights and conventionally dressed, ready-to-roast and ready-to-grill carcass weights. The data obtained were used to calculate the dressing percentages of the differently dressed carcasses. Results indicated that carcass weights and dressing percentages were not affected by diet (P>0.05), but also showed that the increase in the length of the fattening period by two weeks (from 7 to 9 weeks) led to increased carcass weights, while dressing percentages decreased (P (lt) 0.05).U radu su prikazani efekti različitih nivoa sirovih proteina u hrani za tovne piliće, uz dodatak enzima proteaze (Ronozyme Pro Act) u količini 0,2% i 0,3% na masu i randmane obrađenih trupova pri različitom trajanju tova (49 i 63 dana). U ogledu je korišćen brzorastući tovni hibrid Cobb 500. Na kraju oglednih perioda, 49 i 63. dana, odabrano je slučajnim izborom po 10 muških i 10 ženskih pilića iz svake eksperimentalne grupe i izmerena je masa grla pre klanja, masa klasično obrađenog trupa, trupa spremno za pečenje i trupa spremno za roštilj. Na osnovu ovih podataka izračunat je randman različito obrađenih trupova pilića. Dobijeni rezultati ukazuju da mase i randmani trupova nisu bili pod uticajem ispitivanih obroka (P>0,05), ali i da su se sa produžavanjem trajanja tova za 2 nedelje (sa 7. na 9 nedelja) povećale mase trupova, uz istovremeno smanjivanje randmana obrađenih trupova (P (lt) 0,05)

Efekti intenziteta svetlosti i gustine naseljenosti na telesnu masu i prinose vrednijih delova trupa brojlera

In order to determine the effect of intensity of light and stocking density, as well as the interaction of light intensity x stocking density on body weight and individual carcass traits, an experiment was performed on 1200 broilers of the Ross 308 genotype. The investigated factors were the intensity of light (LI): 20 lx (K) ; 150 lx (O) and stocking density (SD): 10 broilers/m2 (A); 13 broilers/m2 (B); 15 broilers/m2 (C), in 4 repetitions. The light source was incandescent bulbs of adequate intensity and a light program 16L: 4D: 2L: 2D was applied. Broiler body weight was controlled on 11th, 21st, 35th and 42nd day, by individual measurement of all chickens in the trial. The average sample containing 12 chickens per treatment with equal gender representation (total of 72 broilers) was used to study the slaughter quality of carcasses based on the parameters of absolute and relative yield of more valuable carcass parts (breast, thighs and drumsticks) and meat in the more valuable parts of the carcass. The effect of light with different intensity on the body weight differed depending on the broiler rearing phase. The interaction effect of the intensity of light and stocking density on the body weight of broilers was confirmed in all stages of growing up to the age of 42 days. A higher intensity of light (150 lx) showed the potential to alleviate the negative effects of higher stocking density (15 broilers/m2 ) on the final body weight of the broiler. The carcass traits were not significantly affected by the intensity of the light, while the stocking density, as well as the intensity of the light x stocking density did influence the yield of whole breast and the yield of breast meat.U cilju utvrđivanja efekta intenziteta svetlosti i gustine naseljenosti, kao i interakcije intenzitet svetlosti x gustina naseljenosti na telesnu masu i pojedine karakteristike trupa, sproveden je ogled na 1200 brojlera genotipa Ross 308. Ispitivani faktori su intenzitet svetlosti (LI): 20 lx (K); 150 lx (O) i gustina naseljenosti (SD): 10 grlo/m2 (A); 13 grlo/m2 (B); 15 grlo/m2 (C), u 4 ponavljanja. Izvor svetlosti su bile incandescent bulbs odgovarajućeg intenziteta i primenjen je svetlosni program 16L:4D:2L:2D. Telesna masa pilića je kontrolisana 11., 21., 35. i 42. dana, pojedinačnim merenjem svih pilića u ogledu. Na prosečnom uzorku od 12 pilića po tretmanu sa podjednakom zastupljenošću polova (ukupno 72 brojlera) izvršeno je ispitivanje klaničnog kvaliteta trupa na osnovu parametara apsolutnog i relativnog prinosa vrednijih delova trupa (grudi, bataci i karabataci) i mesa u vrednijim delovima trupa. Efekat svetlosti različitog intenziteta na telesnu masu se razlikovao u zavisnosti od faze gajenja brojlera. Interakcijski efekat intenziteta svetlosti i gustine naseljenosti na telesnu masu brojlera je potvrđen u svim fazama gajenja do starosti 42 dana. Veći intenzitet svetla (150 lx) je pokazao potencijal da ublaži negativne efekte većih gustina naseljenosti (15 grlo/m2 ) na završnu telesnu masu brojlera. Karakteristike trupa nisu bile pod značajnim glavnim efektom intenziteta svetlosti dok je gustina naseljenosti, kao i interakcija intenzitet svetlosti x gustina naseljenosti, uticala na prinos celih grudi i prinos mesa grudi