Aggressive media content and preschool children

Mediji su sve više prisutni u našim životima. Djeca predškolske dobi slobodno vrijeme provode uz televiziju, mobitele i Internet i to im je postao glavni način zabave. Na taj način mediji manipuliraju djecom i njihovim osjećajima putem raznih reklama, crtanih filmova, glazbenih spotova i slično. U medijima je sve više prisutno destruktivno ponašanje poput agresije, nasilja, psovanja i djeci neprimjerenih sadržaja. Ovim radom objasnit će se što su mediji, koji su pozitivni i negativni aspekti medija, na koji način manipuliraju djecom, koje im poruke prenose, kako agresivni sadržaji djeluju na djecu predškolske dobi te na koji način spriječiti loš utjecaj na dječji razvoj.The media is increasingly present in our lives. Preschoolers spend their free time with television, cell phones and the Internet, and this has become their main way of entertainment. In this way, the media manipulates children and their feelings through various commercials, cartoons, music videos and the like. Destructive behaviors such as aggression, violence, swearing and inappropriate content are increasingly present in the media. This paper will explain what the media are, which are positive and negative aspects of the media, how they manipulate children, what messages they convey, how aggressive content affects pre-school children and how to prevent bad influence on children's development

Sustav za stvaranje sigurnosnih kopija dokumenata

Cilj ovog završnog rada je teorijski opisati način rada neenkripcijskog i enkripcijskih ransomwarea, značenje Bitcoin kriptovalute u virusnom napadu te objasniti postupak heširanja u razvijanju programske zaštite datoteka od kripto virusa. Usporedbom trenutno najkorištenijih sustava za stvaranje sigurnosnih kopija dokumenata zaključeno je da rade na drugačijem principu od klasičnog backupa. Potrebno je stvoriti sustav za stvaranje sigurnosnih kopija dokumenata u kojemu je moguće stvoriti sigurnosnu kopiju dokumenata određenih ekstenzija i omogućiti njihovo vraćanje. Usporedbom hash vrijednosti datoteke može se vidjeti promjena učinjena nad datotekom. Sustav provjerava hash vrijednost određenog dokumenta i uspoređuje s vrijednostima u bazi podataka. Ako je rezultat pretrage negativan, stvara kopiju datoteke i novi unos u bazu. Sustav time omogućuje vraćanje različitih verzija istog dokumenta, čime se izbjegava gubitak podataka. Aplikacija je izrađena u C# programskom jeziku.The aim of this bachelor thesis was to theoretically describe the non-encrypting ransomware and encrypting ransomware, usage of Bitcoin cryptocurrency in a viral attack and to explain the process of hashing within the file protection system. By comparing the most frequently used file backup systems, it was concluded that they do not operate like a classic backup system should. It is necessary to create a file backup and restoration system in which it is possible to create copies of files with specific file extensions and to enable their restoration. By comparing hash values of a file, a change within the file can be detected. The system checks the hash value of the selected document and compares them with the values in its database. If the result of the search is negative, the system creates a copy of the selected file and a new entry in the database. With that, the system enables restoration of different versions of the file, avoiding data loss. The application was made in C# programming language

Information Technology as Basis for the Changes in the Social Role of Film

Digital technologies are changing the way we see film as a mass medium turning it into one of the most important media of today, and, judging by the current trends, of tomorrow as well. Mostly made with digital equipment, the largest number of films that appear today are short, often non-narrative, even more often amateur. Paradoxically, it seems that the proclaimed 'death of film tape' could mark a new, more active 'life' for the film

Effect of steel slag on growth and physiology of corn (Zea mays L.)

Bazična troska koja se koristi u ovom istraživanju je nusproizvod pri proizvodnji čelika u elektrolučnoj peći. Obzirom da je sadržaj P, Fe, Ca, Mg i Mn u tako dobivenoj troski visok, a sadržaj Cd, Pb, Hg i ostalih toksičnih teških metala vrlo nizak, usitnjena troska je potencijalni izvor mineralnih tvari za rast i razvoj biljaka, posebice na tlima siromašnim željezom. Cilj istraživanja bio je procijeniti učinkovitost troske kao izvora određenih hranjivih elemenata na rast i fiziološke procese kukuruza te utvrditi da li troska u biljci dovodi do oksidacijskog stresa kao posljedica primanja povećanih količina Fe i Cu. Kao supstrati za sadnju biljaka korištene su mješavine zemlje i pijeska u različitim omjerima. Sjemenke kukuruza su zasijane u posudice i napunjene samo supstratom (kontrola) ili supstratom uz dodatak fino mljevene troske. Nakon dva tjedna, dijelu kontrolnih biljaka kao i onih uzgojenih uz dodatak troske dodan je NH4NO3 kao izvor N. Dijelu kontrolnih biljaka koje služe kao pozitivna kontrola dodano je tekuće gnojivo – NPK i Fe. Osim parametara rasta, izmjerena je fluorescencija klorofila i prinos suhe tvari biljaka, sadržaj mineralnih tvari u supstratu i listovima biljaka, sadržaj klorofila i karotenoida, lipidna peroksidacija te aktivnosti antioksidacijskih enzima. Rezultati su pokazali da je troska vrlo dobar i jeftin izvor mikroelemenata poglavito Fe, Mn i Mg potrebnih biljci te da se njezinom upotrebom znatno smanjuje kloroza listova u biljaka koje rastu na tlima siromašnim željezom.Basic slag used in this study is a byproduct in the production of steel in electric arc furnaces. Given that the content of P, Fe, Ca, Mg and Mn in the slag is high and those of Cd, Pb, Hg and some other toxic heavy metals is very small, finely ground slag is a potential source of minerals necessary for plant growth and development, especially on iron-poor soils. The aim of this study was to evaluate the effects of steel slag, as a source of specific nutrient elements, on growth and physiological processes of corn and to determine whether steel slag can induce oxidative stress in plant cells. A mixture of earth and sand in different proportions was used as a substrate for planting. Corn seeds were sown in containers and filled with either pure substrate (control) or substrate mixed with finely ground slag. After two weeks, control plants and those grown with the addition of slag were supplemented with NH4NO3 as a source of N. A part of control plants that served as a positive control was supplemented with liquid fertilizers - NPK and Fe. Beside growth parameters, chlorophyll fluorescence, dry matter yield of plants, mineral content in the substrate and plant leaves, chlorophylls and carotenoids content, lipid peroxidation and antioxidant enzyme activities were measured after six weeks of cultivation. The results showed that steel slag is a very good and inexpensive source of microelements especially Fe, Mn and Mg essential to plants and that its usage significantly reduces leaf chlorosis in plants growing on iron-deficient soils

Singularity theory approach apllied to fourdimensional model of the hypothalamic-pituitaryadrenal system activity

The HPA system is a complex neuroendocrine system whose main purpose is to regulate wide variety of bodily processes, under basal physiological conditions and during stress, by regulating the plasma levels of corticosteroids secreted from adrenal glands. In this paper, we apply the singularity theory approach to an initial model of this system, which we have previously published.Physical chemistry 2006 : 8th international conference on fundamental and applied aspects of physical chemistry; Belgrade (Serbia); 26-29 September 200

The Bison, October 5, 2018

Malformacije se javljaju kod uzgojnih populacija mlaĎi lubina, a utječu na zdravlje ribe i njezinu ekonomsku vrijednost na trţištu. Posebna paţnja u radu usmjerena je na metodologiju i proces izdvajanja deformirane mlaĎi lubina u uzgoju. U svrhu pravilnog načina vredovanja deformiteta napravljenje su rendgenske slike cjelokupnog kostura izdvojenih jedinki. Zbog pojavnosti deformacija na kraljeţnici (>3%) u drugoj mrijesnoj seriji je obavljeno izdvajanje deformiranih jedinki od zdravih. U ukupnom uzorku bile su 103 jedinke. Najveći broj jedinki je imao skoliozu (83%), dvije jedinke su imale lordozu (1,9%), dok je pet jedinki imalo kifozu (4,8%). Normalnu kraljeţnicu je imalo 13 jedinki, ali su iste imale oštećen operkulum (12,6%). U uzgojnoj sredini, uz dane starosti jedinki pratile su se vrijednosti abiotičkih faktora: kisik, temperatura, ugljični dioksid i amonijak.Malformations that occur in breeding populations are the causative agent which affects the health of the fish and its economic value. Particular attention in this thesis is focused on metodology and the process of selection of sea bass juveniles with deformities. In order to obtain a better insight into the type of deformities, X-ray images of the entire skeleton were taken. Because of the manifestation with deformities (>3%) in the second hatchery series, a selection has been made in the pools, and within this gruop healthy and deformed individuals were divided. There were 103 individuals in the sample. The largest number of fishes had a scoliosis (83.0%). There were two individuals with lordosis (1.9%), five with kifosis (4.8%), and thirteen with normal spine, but with damaged operculum (12.6%). In the breeding environment, besides the age of individuals, other values were observed such as: oxygen, temperature, carbon dioxide and ammonia

Prvi nalaz erythronotus tipa obojenosti kod vrste Lacerta agilis argus Laurenti, 1768 u Hrvatskoj

The Sand Lizard, Lacerta agilis Linnaeus, 1758, is a species very widely distributed in Croatia. Erythronotus coloration morphs are known to appear very often in different parts of Central and Eastern Europe, but were never recorded in Croatia. In this paper the author describes the first record of this color morph in a male individual collected in the vicinity of Donji Miholjac (Northeastern Croatia) during research in 2006.Livadna gušterica, Lacerta agilis Linnaeus, 1758 vrlo je široko rasprostranjena vrsta u Hrvatskoj. Jedinke s erythronotus tipom obojenosti poznate su iz raznih područja središnje i istočne Europe, no u Hrvatskoj nisu bile nikada zabilježene. Autor u radu donosi prvi nalaz tog tipa obojenosti kod jedinke muškog spola nađene u okolici Donjeg Miholjca (sjeveroistočna Hrvatska) tijekom istraživanja 2006. godine