In this article we present a survey of the power control techniques for modern wireless DS-CDMA communication systems. Power control is the single most important system requirement for DS-CDMA systems. Well-defined power control is essential for proper functioning of the DS-CDMA system. In the absence of power control the effect of near/far phenomena is dominant, and the capacity of the DS-CDMA mobile system is very low, even lower than that of mobile systems based on FDMA. However, when the power control in DS-CDMA systems exists, it allows users to share resources of the system equally between themselves. Also, with a proper power control it is possible to lower total transmitting power of the mobiles and prolong the battery life.

In the printing plate developing process, the offset printing developer undergoes changes, as well as enrichment by the various chemicals, i.e. metals, organic binders and photosensitive compounds. The objective of this study was to investigate the electrocoagulation/flotation (ECF) treatment efficiency for the removal of copper, turbidity and organic substances from the waste offset printing developer (WOPD). The effect of operational parameters, such as electrode materials, current density, interelectrode distance and operating time, was studied. Also, the response surface analysis was applied to evaluate the effect of main operational variables and to get a balanced removal efficiency of investigated WOPD parameters by ECF treatment. The removal efficiency increases significantly with the increasing of operating time and mainly increases with the increasing of current density. The obtained results show that the interelectrode distance and combinations of electrodes determine the removal efficiency of copper, turbidity and organic substances. Based on the obtained results, the optimized parameters for the ECF treatment removal of investigated WOPD parameters were identified as: Al(À)/Fe(+) electrode combination with interelectrode

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Original scientific paper This study investigates the effects of universal and specific characteristics of typefaces with combined method-through comparison of the results of digital analysis and subjects' responses to binary images stimuli. Results point to the dependency of the response in relation to the isolated characteristic of the universal structure. In other words, with the combined method in this study we disclose that certain attributes are assigned to typefaces in accordance with their matching or mismatching to the universal structure. The findings open the question of the functionality of existing classifications, and the need of redefining the old, or establishing the new classification systems of typefaces.Keywords: SSIM; typeface; typeface personality; universal structure Otkrivanje univerzalne strukture i djelovanja pisamaIzvorni znanstveni članak Ova studija istražuje učinke univerzalnih i specifičnih karakteristika pisama kombiniranom metodom -usporedbom rezultata digitalne analize i odgovora ispitanika na binarne slike podražaje. Rezultati ukazuju na zavisnost odgovora ispitanika u odnosu na izdvojeno svojstvo univerzalne strukture. Drugim riječima, kombiniranim postupkom, korištenim u ovom istraživanju, možemo otkriti da li su određena svojstva dodijeljena pismima sukladna s njihovim podudaranjem ili nesukladna s univerzalnom strukturom. Rezultati ovog istraživanja otvaraju pitanje funkcionalnosti postojećih klasifikacija i potrebu redefiniranja starih, ili uspostavljanja novih sustava klasificiranja pisama.

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