Ukupna izvrsnost sveučilišne nastave najviše ovisi o pedagoškim i didaktičko­metodičkim kompetencijama sveučilišnih nastavnika. Za razvoj i unaprjeđenje sveučilišne nastave važno je osuvremenjivanje nastavnog procesa koje ne podrazumijeva samo osuvremenjivanje kurikula, nego cjelokupnoga didaktičko­metodičkog organiziranja nastavnoga rada. Pritom je potrebno naglasiti zadovoljstvo i potrebe studenata, kompetencije visokoškolskih nastavnika i očekivanja radnog tržišta. Cilj ovoga rada bio je ustvrditi koja je sastavnica didaktičko­metodičkog organiziranja sveučilišne nastave najvažniji čimbenik izvrsnosti nastavnog rada te kako sveučilišni nastavnici Univerziteta u Tuzli vrjednuju vlastitu izvrsnost didaktičko­metodičkog organiziranja nastavnog rada. Koristilo se analitičko­deskriptivnim upitnikom kao inačicom analitičko­deskriptivne metode, postupcima analize sadržaja i anketiranjem. Pretpostavljeno je kako postoji statistički značajna razlika u samovrjednovanju važnosti čimbenika izvrsnosti didaktičko­metodičke organizacije nastavnog rada visokoškolskih nastavnika Univerziteta u Tuzli te da se samovrjednovanja važnosti pojedinih čimbenika izvrsnosti sveučilišne nastave razlikuju s obzirom na dob, spol, znanstveno­nastavno/umjetničko zvanje, godine radnog iskustva u visokoškolskim ustanovama te znanstveno područje kojemu Fakultet pripada. Rezultati istraživanja pokazali su kako su izvrsnost planiranja i pripremanja te izvrsnost izbora nastavnih metoda najvažniji čimbenici ukupne izvrsnosti organiziranja sveučilišne nastave, a 90 % nastavnog osoblja ocjenjuje kako je nastava koju organiziraju visoke razine izvrsnosti.

The interaction between geogrid/wire fabric reinforcement and fill material in reinforced earth walls, as well as its quantification, is a complex problem that depends on a number of factors. This paper presents and discusses state of the art related to numerical simulations of pull-out tests used for investigation of interaction between cohesionless fill and reinforcement. In addition, the results of a specially designed group of numerical simulations are presented and compared with recommendations of American and European standards related to such experiments.

The main urgent problem of humanity is related to clean water availability. Shortage of drinking water in most parts of the world has been a growing concern in recent times. This chapter will consider emerging contaminants present in the aquatic environment. The commonly present concentrations are in the range from mg/L to ng/L in wastewater, surface water, ground water, and drinking water. The challenges in wastewater and drinking water purification are dependent on the origin of the water. Solar photocatalysis is a new promising technology for the water purification. With solar, photocatalysis is possible to reduce organic contaminants present in water by using the sunlight. This chapter addresses the fundamental reaction mechanism, different type of photocatalytic nanomaterials based on TiO2, and recent developments in the reactor design for solar photocatalytic water purification from lab scale-up to large-scale application.

An autonomous underwater vehicle (AUV) or a multi-AUV system performing autonomous seafloor exploration missions by a side-scan sonar need to perceive their environment in order to replan the mission if they detect interesting objects in sensor data. Several anomalous/salient object detection methods mostly used for natural images are here applied to sonar images. All methods were firstly benchmarked on a 1500 simulated side-scan sonar images dataset. Precision-recall and processing time analysis was conducted in order to choose the best suited method in such controlled conditions. The performance of the best performing detection method was then validated on a 350 real side-scan sonar images dataset. This method was then implemented and optimized for the computer onboard an AUV. It turned out to be fast enough for online processing of large volumes of sonar data.

The position of regional geography in the system of geographical sciences is a topic that has been the subject of intense epistemologically and methodologically focused discussion within scientific realm at the global level since the middle of the 20th century. The initial outcome of these processes at the academic level was the marginalization of regional geography in the study of spatial phenomena, but since then there was a partial revitalization of the regional approach. In view of these changes, the place of regional geography within geographical education also began to be problematized. In this paper, it is conducted a critical review of selected academic articles from the last few decades that at least in a certain segment touch on this topic, as well as analysis of recent trends in school geography. This analysis suggests that it is difficult to find an adequate replacement for regional content, especially in the geographical education at lower levels of education, and that in many countries it still represents the basis or at least an important part of the geographical curriculum. However, at the same time, the need for change of teaching approach based on the excessive so-called regional inventory of space, by introducing general geographical concepts in the study of regional units of various levels, and putting them in the service of the development of critical thinking in students.

Aim: The main purposes of the study were to assess the NPK fertilizer value of biogas digestates in different soils and to evaluate the risk of unwanted nutrient leaching. The fertilizer value of digestates from anaerobic digesters was investigated in a greenhouse pot experiment with wheat in three different soils; silt, loam and sand. The digestates were based on different feedstock and had a low, dry matter content. The fertilizing effect of digestates was compared to mineral fertilizer and manure. To investigate the fate of excess nutrients in soil after the growing season, the pots were leached after harvest. A complementary soil column leaching experiment without plants was carried out in the laboratory. Findings: The concentration of ammonium in digestates provided a good indicator of the nitrogen fertilizer value of the digestates. In the silt and loam, the ammonium N fraction in digestates had a fertilizer replacement1) value equal to that of mineral fertilizer N, whereas the replacement value was higher in the nutrient poor sandy soil. Digestates often have a ratio between nitrogen, phosphorus and potassium which is not favourable for plant growth2). However, the suboptimal balance did not result in reduced plant growth or unwanted leaching from soil. The results show that digestates from biogas production based on fundamentally different feedstock are promising as NPK fertilizers. The N fertilization can simply be based on the digestate NH4 + concentration and, at least for wheat production, considerable variation in the concentrations of K and P can be tolerated.

Background/Aim: There have been different experimental conditions for in vitro studies on human umbilical arteries (HUA) in tissue bath system. This diversity was mainly reflected in variables such as stretching tension, incubation period and initial constriction challenging with potassium (KCl). The aim of the study was to establish optimal experimental conditions which will provide better responsiveness of HUA preparations, as well as to examine the impact of 24 h cold storage on viability and responsiveness of HUA to KCl and serotonin. Methods: The KCl-induced constrictions at different stretching tensions (0.5 g, 1.0 g, 2.0 g, 4.0 g), incubation times (30 min, 60 min, 120 min), and after multiple initial constriction challenging were compared. Dose response curves for serotonin were obtained under different conditions (1.0 g and 60 min vs. 2.0 g and 120 min). The influence of 24 h cold storage on KCland serotonininduced vasoconstriction of HUA preparations was examined as well. Results: The strongest constrictions induced by serotonin or KCl were obtained when preparations were adjusted at 2.0 g and incubated for 120 min. The KCl-induced constrictions observed after 120 min were statistically higher (p < 0.05) when preparations were challenged three times (30 min, 60 min, 120 min), compared to those challenged only once. The preparations that were stored at 4 0C for 24 h showed significantly stronger serotonin-induced constrictions (p < 0.01). The cold storage had no influence on KCl-induced constriction. Conclusion: For performing in vitro studies on HUA preparations in tissue bath, we propose stretching tension of 2.0 g, incubation period of 120 min and multiple initial constriction challenging with KCl as optimal experimental condition. We also showed that HUA preparations retained functional viability even after 24 h of cold storage.