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Publikacije (48465)

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Željko Stević, M. Bouraima, Marko Subotić, Yan Qiu, P. A. Buah, Kevin Maraka Ndiema, Christian Magloire Ndjegwes

Purpose . The purpose of this study is to examine the causes of delays in road construction projects in the Benin Republic from the consultant, client, and contractor perspectives. Design/Methodology/Approach . Through construction project reports, 20 factors that could cause delays in road construction projects were identified. The factors were arranged into a questionnaire, which was distributed to three separate experts. The fuzzy PIPRECIA (PIvot Pairwise RElative Criteria Relevance Assessment) method was used to calculate the independent importance of each delay factor. The Spearman and Pearson correlation coefficients were used to test the method’s consistency. Findings . The top five road construction project delays in the Benin Republic, according to the analysis of the 20 factors considered, are project funding, slowness during the client-endorsed payment process, scarcity of professional personnel, delay in indemnifying reimbursement (land-owners), and price escalation. This shows that of the various types of delays, the financial delay group is the most crucial. Originality/value. This study evaluates the causes of delays in road construction projects in the Benin Republic for the first time in literature. This study also examined the top 5 delay factors in road construction projects. This study is based on reports from road construction projects and a performed questionnaire survey. Based on the findings, measures have been formulated to aid project managers to alleviate the road construction delays in the Benin Republic. In addition, this study is practical for both scholars and road construction parties and provides a complete and verifiable analysis of the progress of a road construction project to make it easier and attain a competitive level of time, cost, and quality for successful road construction.

A. Dedeić-Ljubović, El Jesah Ðulić, Erna Husić, Jasmina Halković, Džemilja Gačanović, I. Salimović-Bešić

This study evaluated the performance of the COVID-19 Ag-RDT compared to the real-time reverse transcription-polymerase chain reaction (rtRT-PCR) for SARS-CoV-2 detection and its use among patients referred for emergency admission. A total of 120 nasopharyngeal swabs were collected from patients referred for emergency admission and immediately preceded for testing to the Unit of Clinical Microbiology. Out of 60 Ag positive tests, 53 (88.3%) were confirmed by rtRT-PCR, while 7 (11.7%) tested negative (false positives). Out of 60 Ag negative tests, 56 (93.3%) were confirmed negative by rtRT-PCR, and 4 (6.7%) were positive (false negatives). Ct value comparison was performed for 53 samples that were positive by both methods: 8 (15.1%) isolates had Ct value up to 20; 37 (69.8%) 21 to 30 and 8 (15.1%) 31 to 40, respectively. The sensitivity of the analyzed rapid Ag test was 92.9%, and specificity 88.9%. The accuracy of the Ag test was 90.8%. This study has shown that rapid Ag tests can be used in emergency admissions to healthcare facilities. However, rtRT-PCR should be considered after negative antigen test results in symptomatic patients, and after positive antigen test results in asymptomatic persons.

B. Arsić, A. Lukić, Anja Gajić

The aim of this research was to examine the frequency of different barriers faced by special education teachers in working with children with autism spectrum disorders (ASD). The sample included 53 participants of both genders and of different ages who were diagnosed with ASD. The instrument used to assess the presence of barriers in teaching refers to the Assessment of Barriers in Teaching (VB-Mapp Barriers Assessment -Sundberg, 2008). In our sample, it was found that all respondents have a pronounced presence of teaching barriers, while the most frequent barriers are prompt dependence, generalization difficulties, socialization problems, escape or avoidance of given tasks and the absence of the tact ability. Having in mind the obtained results, it is highlighted as a necessity to develop an approach that would lead to elimination of the mentioned barriers, as well as to develop a treatment plan to address those teaching barriers in working with children with PSA and consequently enable a higher degree of adoption of new knowledge and skills by children with ASD.

Marina Radanović, S. Tomić, Tanja Ivanović, Ana Cicmil, Jovana Hrisa-Samardžija, Srđan Radanović, Jelena Lečić

Introduction. Epulis is a change in gingival tissue that occurs under the influence of chronic irritation. Histologically, there are several different types of epulis. Fibrous epulis is benign tumor of gingiva that most often occurs in interdental papilla area as a result of local irritation (inadequate restorative fillings, carious teeth, subgingival deposits or the combination of them). The aim of this paper is to present a clinical case of fibrous epulis. Case report. A 25-year-old girl reported to the Specialist Center for Dentistry in Foca. Clinical examination revealed a gingival tissue enlargement in the area of the upper jaw central incisors with speech and chewing function disturbances. Intraoral examination revealed a change above the level of gingiva, reddish-pink in color with smooth surface texture and soft consistency. The size of the change was 1 x 1.5 cm. It was connected to the interdental gingiva between teeth 12 and 21 by a narrower base. Clinically, a significant amount of soft and hard dental deposits surrounded the remaining teeth. Remaining gingiva was swollen, red, bleeding on provocation. The anamnesis did not confirm the presence of other acute and chronic diseases. The patient was not pregnant. She was informed about clinical condition assessment, as well as possible therapeutic procedures. Our patient was treated with non-surgical periodontal therapy and surgical excision of the enlargement. After histopathological examination of the removed tissue, the diagnosis was made: "Fibrous epulis cum ulceration". Conclusion. Clinical examination is insufficient for definite diagnosis. Therefore, a histopathological examination of the tissue is mandatory for fibrous epulis definite diagnosis. Treatment of choice is surgical excision of the enlargement and removal of predisposing factors to avoid recurrence.

S. Jankovic, B. Kujundžić, Bojana Davidovic, Jelena Lečić, Jovana Hrisa-Samardžija, Tanja Ivanović

Introduction. Hyperdontia or supernumerary teeth are excess number of teeth in comparison to normal dentition. The aim of this study was to present different variants of permanent supernumerary teeth, as well as their observation or elimination in order to prevent possible complications Case report. Six different cases of hyperdontia are presented in this paper. All hyperdontia cases were multidisciplinary evaluated and individual treatment protocols were applied. Already erupted supernumerary teeth were extracted without surgical intervention. Unerupted teeth were surgically removed or left for observation. Conclusion. Early and frequent dental check-ups are very important for children in order to detect possible dentition irregularities and thus timely start with appropriate therapy.

Slavica Dacić, D. Ivanović, Ljiljana Pavlović

Introduction. The most common form of leishmaniasis is cutaneous leishmaniasis. It presents with cutaneous lesions of the unprotected parts of the skin which leave scars later on. The causative agents are protozoae from the Leishmania species , and there are more than 20 of them. Clinical presentation and therapy depend on the type of leishmaniasis. The vectors of leishmaniosis are flies from the Phlebotomus species, and the source of infection is people and animals. Case report. A patient used to work in Iraq. Due to skin lesions that persisted for three months and suspicion of cutaneous leishmaniosis, he was sent by an infectious disease specialist from General hospital, Pancevo to the Public Health Institute of Serbia - PHIS. Lesions were localized on the hands, in the form of plaques with central ulcerations. There were similar cases among his colleagues. Microscopic examination of the skin samples, Giemza stained, showed intracellular amastigote Leishmania. The patient spent two months in the Clinic for infectious and tropical diseases. He was treated with fluconazole and liposomal amphotericin B and discharged with crusts on his hands. Clinical presentation, epidemiologic data, and microbiological diagnosis are very important for the diagnosis of cutaneous leishmaniasis.

Z. Obradović, Eldina Smječanin, Ema Pindžo, Hana Omerović, Nejra Ćibo

Vector-borne diseases occur in the chain pathogen-vector-host, with vectors playing the most prominent role. Vectors transmit pathogens between humans, and more often, from animals to humans so that many vector-borne diseases are categorized as zoonoses. Vector-borne diseases have become more important worldwide, and not exclusively in the tropics as in the past, by causing high morbidity and mortality every year. Out of all infectious diseases, more than 17% are vector-borne. The most significant and widespread vectors are mosquitoes and ticks, and the most significant diseases are West Nile fever, yellow fever, Zika virus fever, tick encephalitis, Lyme borreliosis, Crimean-Congo hemorrhagic fever and rickettsioses. Life and preservation of the vectors, and breakouts and spread of vector-borne diseases are profoundly affected by climate change (rise in temperature and humidity, downfalls, extreme weather conditions), urbanization, deforestation, inadequate waste management, international travel, international commerce and social conditions, with poverty being the most important and directly linked to the rising incidence. In recent years, all factors mentioned above have favoured a rising number of the vectors and their spread, so that vector-borne diseases have become emergent or reemergent, meaning their high incidence have been registered in the countries with no previous breakouts; or they reoccurred in the areas where they had earlier been eradicated. Some extra reasons contributing to the increasing incidence are lowered investments and limited resources for monitoring vector-borne diseases. Most vector-borne diseases are zoonoses, making "One Health" the only appropriate approach, which implies integrated monitoring of the diseases in the sectors of both animal and human health. Prevention of vector-borne diseases should be aimed at raising public awareness on the importance of the vectors, education of the professionals and active involvement of the community as a whole.

J. Milic, R. Sapic

COVID-19 pandemic has put traditional forms of work and education on hold for many institutions. The impact of the transition to "online" work and education mode on mental and education on mental health is particularly interesting. The primary objective of this paper was to to identify advantages and disadvantages of transition to the online work regime that were additionally exacerbated by the pandemic (managerial aspect). The secondary objective was to consider this impact on the mental health of the individuals (socio-psychological aspects). A review of the literature published so far related to the work and teaching process in the Covid-19 pandemic recommends an online regime whenever possible. The results in the labor market domain indicate that if a person is self-disciplined, does not require supervision, has clear tasks and motivation, the online regime provides a number of benefits to such an employee, and consequently to the employer. On the other hand, for people who find motivation to work primarily in contact with colleagues, require supervision, lack self-discipline, as well as for those who aspire to managerial positions, teleworking does not give favorable results. In the field of teaching, in online education, quantitative analysis shows an improved success of pupils and students, but raises the question of whether this success is backed by real knowledge. The identified health consequences for individuals exposed to long-term online interaction regimes are, primarily: burnout syndrome, isolation from friends, problems in family relationships, experience of reduced happiness at home, general poor health and lack of sleep. It is likely that this regime will continue to some extent in the foreseeable future; work organizations and educational institutions will need to implement formalized policies that take into account support for managing the boundary between work and home activities, role clarity, workload, performance indicators, technical support, facilitating networking and training for managers.

F. Muhamedagić, E. Pehlić

The paper presents the results of a comparison of brown rendzina and colluvial sinkhole at approximately the same altitudes and the same land use. The sites were located in the Kalati area within the National Park „Una“. More precisely, the places referred to the top of the sinkhole (brown rendzina top) and the bottom of the sinkhole (colluvial soil bottom). The main objective of the research, in addition to the physical and chemical parameters of soil quality, was to determine the distribution of the total content of cadmium (Cd), nickel (Ni) and arsenic (As). The total content of these elements werw observed in composite samples at two depths of 0 – 10 and 0 – 20 cm and horizons profile. Their total content was measured by atomic adsorption spectrometry – AAS. The results were statistically analyzed using Kruskal Walisovog test at the significance level of p ≤ 0.05 using correlation coefficient χ. The results showed a single legality of the distribution of Cd, Ni and As in samples of soil profile, while the average soil samples showed unique legality of the distribution of observed elements.

Certain research on the development of motor skills of children with hearing impairment shows that their abilities are not age-appropriate, although they have the same basis for development as hearing children. Education of children with hearing impairments is predominantly focused on hearing and speech rehabilitation, while activities related to music and sports are mostly neglected. The aim of this study was to examine the effects of musical-rhythmic stimulation on the development of selected motor skills of children with hearing impairment aged six to fifteen. For this purpose, a special music and dance program of workshops for 26 children with hearing impairments (12 boys and 14 girls) was created for the period of four and a half months. At the beginning of the program implementation, the initial measurement of body coordination and speed of movement was performed, and the final measurement through five standardized tests at the end. The paired samples t-test was used to analyze the effects of applied musical-rhythmic and dance stimulations. The results of the research indicated certain statistically significant differences in the ability to coordinate the body and speed of movement, i.e. that the program of music and dance workshops has a positive effect on the development of selected motor skills in children with hearing impairment.

Određena istraživanja o razvoju motoričkih sposobnosti djece s oštećenjem sluha pokazuju da njihove sposobnosti nisu u skladu s dobi iako imaju iste osnove za razvoj kao i čujuća djeca. Edukacija djece s oštećenjem sluha dominantno je usmjerena na rehabilitaciju sluha i govora, a aktivnosti vezane za glazbu i sport uglavnom su zanemarene. Cilj ovog istraživanja bio je ispitati učinke glazbeno-ritmičkih stimulacija na razvoj odabranih motoričkih sposobnosti djece s oštećenjem sluha u dobi od šest do petnaest godina. Zbog toga je kreiran poseban glazbeno-plesni program radionica za 26 djece s oštećenjem sluha (12 dječaka i 14 djevojčica) u trajanju od četiri i pol mjeseca. Na početku realizacije programa provedeno je inicijalno mjerenje koordinacije tijela i brzine pokreta te po završetku finalno mjerenje kroz pet standardiziranih testova. Za analizu efekata primijenjenih glazbeno-ritmičkih i plesnih stimulacija korišten je t-test za završne uzorke (paired samples test). Rezultati su istraživanja ukazali na određene statistički značajne razlike u sposobnostima koordinacije tijela i brzine pokreta, odnosno da program glazbeno-plesnih radionica ima pozitivan učinak na razvoj odabranih motoričkih sposobnosti kod djece s oštećenjem sluha.

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