Mechanical properties of a material play a pivotal role in its performance when such porous material is used in a flow‐through mode. This study delves into the effect of porosity and microstructure ...on the compressibility of methacrylate polymer, focusing on two distinct microstructures: cauliflower and high internal phase emulsion. Samples with various porosities yet identical chemical composition were prepared and their Young's modulus was measured. The effect of porosity on Young's modulus was described by an exponential law model with the cauliflower microstructure exhibiting an exponent of 3.61, while the high internal phase emulsion of only 1.86. A mathematical analysis of the compression caused by a liquid flow unveiled significant disparities in the porosity threshold where minimal compression is observed, being around 0.45 for the cauliflower while there is monotone decrease in compression with porosity increase for the high internal phase emulsion microstructure. Evaluating exponent integer values between 1 and 5 over entire porosity range reveals that the porosity where the minimal compression occurs increases with a decrease in exponent value, being approximately 0.33 for n = 5, 0.4 for n = 4, 0.55 for n = 3, 0.65 for n = 2 while no minimum occurs for n = 1. These findings indicate that lower exponent value results in lower compression under identical experimental conditions.
U radu je opisana izrada prototipne aplikacije za edukativne svrhe korištenjem beskontaktnog unosnog uređaja, prilikom čega je opisan sam uređaj, prototip aplikacije i način na koji radi. Prototip ...aplikacije simulira jednostavno sastavljanje računala u okviru sustava virtualne stvarnosti. Beskontaktni unosni uređaj koji je pri tome korišten je „Leap Motion“ koji prenosi prirodne pokrete ruke u virtualni svijet tako da korisnik može upravljati elementima korisničkog sučelja na intuitivan način, korištenjem ruku i prstiju. Proces sastavljanja računala u okviru prototipne aplikacije pojednostavljen je tako da se ugrađuju samo najvažnije komponente. U radu se opisuju korišteni alati i prikazuje kako se „Leap Motion“ uređaj koristi i integrira u program za izradu igara i aplikacija. Kako bi prototip aplikacije funkcionirao u navedenoj primjeni, izmijenjeno je i dorađeno postojeće korisničko sučelje i kôd za integraciju uređaja. U procesu izrade rada istražene su mogućnosti uređaja, način postavljanja i instalacije i sama ograničenja uređaja i takve tehnologije.
he paper is formed like an analysis of a case based on the analysis of secondary literature and quality insights. In the paper are affirmed the theoretical concepts of the social production of the ...area, the region as a model of research for the defining of the developmental goal and the concept of a cluster. The discussion consists of three parts: an overview of the relevant literature, ananalys is of the existing socio-economic picture of Podgorje, and a developmental scenario of the Podgorje area in the framework of a cluster of experiences. In the first part of the paper the existing literature relevant to the understanding of the social perception of the area in the world and in Croatia is analysed. There then follows a socio-demographic analysis of the Podgorje micro-region which includes a diachronic overview of the Podgorje developmental picture, and an analysis of the socio-demographic dynamic in the area of Podgorje. In the final part of the paper a developmental scenario of Podgorje is formulated. With the systematic analysis of the developmental dynamic in Podgorje, a perspective is defined which transvalues the area of Podgorje from a "regional" environment into a cluster of vital significance for the further development first of all of Podgorje and then Lika-Senj, Primorje-Gorski Kotar and Zadar counties.
Rad je oblikovan kao analiza slučaja temeljena na analizi sekundarne literature i
kvalitativnim uvidima. U radu se afirmiraju teorijski koncepti društvene proizvodnje prostora,
regije kao modela ...istraživanja radi definiranja razvojnog cilja i koncept clustera. Rasprava
se sastoji od tri dijela: pregleda relevantne literature, analize postojeće socioekonomske
slike Podgorja te razvojnoga scenarija podgorskoga prostora u okviru clustera doživljaja.
U prvom se dijelu rada analizira postojeća literatura relevantna za razumijevanje društvene
percepcije prostora u svijetu i u Hrvatskoj. Slijedi sociodemografska analiza podgorske
mikroregije koja uključuje dijakronijski pregled podgorske razvojne slike te analizu
sociodemografske dinamike u prostoru Podgorja. U završnom dijelu rada oblikuje se
razvojni scenarij za Podgorje. Sustavnom analizom razvojne dinamike u Podgorju, definira
se perspektiva koja prostor Podgorja iz "zavičajnog" okruženja transvaluira u cluster od
vitalnog značaja za daljnji razvoj najprije Podgorja pa onda Ličko-senjske, Primorsko
goranske i Zadarske županije.
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