Certifikacija šuma je instrument šumarske politike koji doprinosi održivom šumarstvu. To je također tržišni mehanizam, koji zajedno sa klasičnim elementima marketing miksa, mogu olakšati konkurentske prednosti šumarskim preduzećima koja imaju pozitivno certificirano gazdovanje šumama. Izbor odgovarajućeg certifikata je ključno pitanje u procesu pokretanja koncepta certifikacije šuma u Bosni i Hercegovini. Sprovođenje certifikacije šuma u skladu sa odabranim programom pretpostavlja zadovoljenje unaprijed utvrđenih standarda, koji su eksplicitno izraženi u obliku principa i kriterijuma. Oni moraju da zadovolje internanacionalno priznate principe održivog upravljanja šumama kao i principe nacionalne šumarske politike i zahtjeve svih relevantnih aktera. Ciljevi istraživanja u ovom radu mogu se sažeti na sljedeći način: - Istražiti mišljenje zaposlenih u šumarstvu u pogledu njihove usklađenosti sa FSC principima kao eksternim standardima certifikacije šuma u Bosni i Hercegovini. - Procjena značaja FSC principa za upravljanje šumama u BiH, sa aspekta navedenih interesnih grupa. - Procjena ispunjenosti FSC principa za upravljanje šumama u BiH, sa aspekta navedenih interesnih grupa. - Definisanje pravaca korektivnih akcija kao sredstva za stalno unapređenje upravljanja šumama, na osnovu razlika između procijenjene važnosti i ispunjavanja FSC principa.

To evaluate clinoptilolite, a natural zeolite, as a candidate material for a permeable reactive barrier for removal of strontium from groundwater, we investigated particle release and permeability reduction in clinoptilolite and sand porous media. In flow-through column experiments, we tested the effects of solution chemistry, grain size, and clinoptilolite pretreatment on particle release and hydraulic conductivity. Permeability reduction occurred not in the clinoptilolite itself but only in finer-grained sand down-gradient of the clinoptilolite. Solutions of high ionic strength inhibited particle release and prevented clogging. Clinoptilolite of larger grain size produced slightly less particle release and clogging. Two pretreatments of the clinoptilolite, rinsing to remove fine particles and calcining to improve strength, reduced particle release and clogging. Calcining, however, significantly reduced the strontium binding strength of the clinoptilolite.

This paper reports the results of an empirical examination of the effectiveness of one type of knowledge management technology, namely 'contextual knowledge repository', for supporting individual decision makers in a predictive judgement task context. 31 volunteer subjects participated in the study. The results indicate that a given technology was fairly useful, but insufficient to maximally enhance individual decision making. On one hand, subjects were found to extract more knowledge and make significantly smaller decision errors than their notional naive counterparts. On the other hand, subjects tended to extract less knowledge and make significantly larger decision errors compared to notional optimal counterparts. These findings suggest that individuals could potentially benefit from those knowledge management technologies that would provide additional explicit analytical and procedural knowledge, or those that would facilitate sharing of tacit knowledge through interaction with others. Future research is necessary to address these issues.

It is shown that the spin is naturally introduced into classical mechanics if the latter is formulated as dynamics of the phase space density. It is shown that the uncertainty principle, as the amendment in this dynamics, restricts possible spins, and in particular equation for the particle with the spin ~ / 2 is derived. Also equation for the charge with this spin is derived when electromagnetic field is included. In one example it is shown that the modulus of the spin changes with the gradient of the magnetic field.