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Search Results: 1 - 10 of 897 matches for " Jovanovi? Slavoljub "
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The role of rural population in agricultural development in the P inja district
JovanoviSlavoljub,?ivkovi? Ljiljana
Glasnik Srpskog Geografskog Dru?tva , 2011, DOI: 10.2298/gsgd1101065j
Abstract: Research results presented in this paper refer to changes in the structure of the agricultural population of the P inja District in the period from 1971 to 2002. They point to markedly decrease in the agricultural population, the share of agricultural population in total population, the share of rural population in total population, as well as the share of active agricultural population in total active population. The process of deagrarianization in this area is a constraining factor for the development of agriculture and causes spontaneous abandonment by working-age population who is employing in other sectors. Transfer of agricultural population in non-agricultural activities takes place either by moving into the city centre or by remaining in agricultural households and employing in non-agricultural activities (which causes daily rural-urban migration). The process of depopulation and deruralization caused ageing population to be involved in agriculture in many rural settlements so that the effects of agricultural production have become significantly decreasing. To eliminate the negative effects of the regional development of the P inja District, it is necessary to establish and implement a functional demographic policy and concept of the revitalization of rural area.
The distance of the main and auxiliary openings from the top of medial and distal root of the first lower permanent molar
Jovanovi?-Medojevi? Milica,?ivkovi? Slavoljub
Stomatolo?ki Glasnik Srbije , 2005, DOI: 10.2298/sgs0503143j
Abstract: The main prerequisite for a successful treatment of pulp disease in apex periodontium is knowledge of morphological characteristics of root canal system, especially one third of his apex. The aim of this work was to define the exact distance of the main and auxiliary openings from the top of medial and distal roots of the first lower permanent molars. Methods: as a research material it was used a hundred extracted first lower molars of the patients of both gender, divided into three age groups. The analysis of the one third of apex was done with the help of binocular magnifying glass and digital roentgenography analysis half of the samples, which were filed with capillary contrast. Results: The results obtained showed that the longest average distance of the main opening from the top of medial root was 0.84mm, and the shortest was 0.61mm; while for the distal root the longest average distance was 0.89mm, and the shortest was 0.62mm. Maximum distance of the auxiliary openings from the top of medial root in the first group was 3.5mm, and the maximum distance of the auxiliary openings from the top of distal root was 2, 5 mm. The results obtained with digital rentgenography showed that the longest average distance of the main opening from the top of medial root was the one noticed in the second age group (0.91mm) then the one from the first group (0,83), and the shortest one in the third age group (0,71mm); as for the distal root: the longest average distance of the main opening from the top of the root was noticed in the third age group (0,95mm) then in the first (0,90mm) and than shortest in the second age group (0,89mm). Conclusion: The distance of the main and auxiliary openings from the top of medial and distal root of the first lower molar varies in the range from 0 to 3,5mm and it depends on the tooth age. .
Localisation of main and ancillary foramina within the mesial and distal roots of the first lower molars
Jovanovi?-Medojevi? Milica,?ivkovi? Slavoljub
Srpski Arhiv za Celokupno Lekarstvo , 2005, DOI: 10.2298/sarh0512476j
Abstract: Introduction. Understanding the morphology of the root canal system, and especially its apical third, represents the basic precondition for the successful treatment of diseased pulp and the apical endodontium. Aim. The aim of this study was to precisely locate the main and ancillary foramina in the mesial and distal first lower molars. Method. One hundred extracted first lower molars, originating from persons of both sexes and three different age groups, were used in the study. Results. The analysis of the sampled molars’ apical third was carried out using a binocular magnifier and a digital X-ray scanner (Trophy). The results showed that the main mesial and distal root foramina were located mostly on the distal surface. The ancillary mesial and distal root foramina were located at the lingual end, in most cases. Statistical analysis demonstrated the congruence of results achieved using the binocular magnifier and digital x-ray in 100% of cases if the main foramen is located on the very top of the mesial root (χ2 =17.23; p<0.001), and in 92.9% of cases if the main foramen is localised on the very top of the distal root of the first lower molar (χ2 =12.07; p<0.001). Conclusion. The most common localisation of the main foramina for all age categories and in both mesial and distal roots is on the distal surface of the root. The greatest number of ancillary foramina was observed in the youngest age category, while they were localised most often on the lingual side of the mesial and distal root.
Map as a tool for independent learning in geography teaching
?ivkovi? Ljiljana,JovanoviSlavoljub,Ivanovi? Marko
Glasnik Srpskog Geografskog Dru?tva , 2012, DOI: 10.2298/gsgd1203035z
Abstract: There are different views on self-regulation in the learning process, how it has to be monitored, controlled, which are the circumstances and external factors that affect independent learning. Dominant are the opinions in which the self-regulation is treated as interaction of processes related to the personality, behavioural and contextual processes. Special attention has been given to motivational strategies and students’ desire to focus on goals. By enabling students to make decisions, set their own goals, make a choice, plan and organize activities, the development of self-learning and student autonomy is being encouraged. If students are given the opportunity of independent activities, effect of self-control in the process of learning and self-regulation becomes more pronounced. The paper will explain the factors that influence the process of self-learning that takes place in regular teaching with the help of map as the basic geographic media. [Projekat Ministarstva nauke Republike Srbije, br. 17008]
Functional connection of didactical elements in teaching geography
?ivkovi? Ljiljana,JovanoviSlavoljub,Ivanovi? Marko
Glasnik Srpskog Geografskog Dru?tva , 2010, DOI: 10.2298/gsgd1002247z
Abstract: The aim of this work is to present complex relations within didactical triangle as well as review of the practical usage of relations of didactical polygon. Importance of subject of this work is, certainly, its constant actualization and irrepressible change which is happening within elements and in their mutual interaction. This kind of relation brings innovations and suffers changes from modern times. Starting from immediate ways of communication to closer and further perceive of their development, the subject gets dimension of expected and somewhat exciting. The theme ensued because of the need for logical separation of didactical elements and also to connect them through complex system of communication. Their imbues are coming to express daily while interaction is developing not only in historical period but in instantaneous stages. The media, today, gives grade to development of society and represent degree of progress. As such an important factor, the role of the media must be taken into consideration. Geographical achievement is represented by teaching methods of geography and in that way it represents significant media. Complicatedness of this theme also reflects in universality; geography has advanced as science and there is great expectation for methodical science to catch up with geography and to present new manners, ways of transferring knowledge. .
Contents on the environmental protection in the geography textbooks for primary and secondary schools
JovanoviSlavoljub,?ivkovi? Ljiljana,An?elkovi? Sla?ana
Glasnik Srpskog Geografskog Dru?tva , 2010, DOI: 10.2298/gsgd1001347j
Abstract: The paper analysis the contents of Geography textbooks which refer to the problems of the protection of the environment. The last publications of Geography textbooks for primary and secondary schools of the Zavod za ud benike i nastavna sredstva (Belgrade) were used as a sample. With this study we wanted to check at what extent the contents of the environmental protection are present in the contemporary Geography textbooks and how much they contribute to the formation of the system of ecologic knowledge and ecologic conscience of students with their structure. The analysis has showed that the problems of the environmental protection in the analyzed textbooks are not present enough, that they are mostly covered in integrative way, sporadically and declaratively. Undefined ecologic concepts are twice as much presented as defined. The explanations of notions are more often supported by examples than by factographic data, although the number of examples is insufficient. Especially, the examples from close surroundings are missing. With their structure, the present contents do not provide knowledge on numerous problems on the protection of the environment and they do not influence the development of ecologic attitudes, emotions and habits in students. Practical implications of the study are shown in the way that the results and conclusions can stimulate the authors of textbooks to change the approach in planning the contents of the future Geography textbooks... .
Theoretical framework of individual learning process in geography tuitition in elementary school
JovanoviSlavoljub,Jani?-Sirid?anski Marina,?ivkovi? Ljiljana
Glasnik Srpskog Geografskog Dru?tva , 2005, DOI: 10.2298/gsgd0501291j
Abstract: Individual learning is the process that pupils use their own activities (intellectual and practical). The school primarily has to develop pupils' skills and habits for individual learning, i.e. to enable them for active learning using their own capacities. This program has to be applied in the earlier stages to produce growth of children's autonomy and independence in coming stages. Individual learning, above all, demands flexibility of thoughts, critic opinion, individual work and intellectual independence creativity, motivation and interest and pupils' participation during the tuitition.
Dental status of institutionalized persons with special needs who live in Special institution “Srce u jabuci” in Pancevo
Savi?-Stankovi? Tatjana,Jovanovi?-Medojevi? Milica,?ivkovi? Slavoljub
Stomatolo?ki Glasnik Srbije , 2011, DOI: 10.2298/sgs1101016s
Abstract: Introduction. Dental status of most people with special needs is not satisfactory. Many of them are edentulous or toothless, with acute extensive caries lesions present, high DMFT index and severe periodontal disease. The objective of this study was to examine the dental status of mentally impaired persons who live in the special institution “Srce u jabuci” in Pancevo. Material and Methods. Clinical examination was performed on 114 institutionalized patients (68 male and 46 female), age 22 to 71 years. Patients were divided in two groups; the first group consisted of 71 persons who had a moderate mental disorder (F71), while the second group included 43 respondents with severe mental retardation (F72). Oral examination revealed: the number of present teeth, caries lesions, the presence of restorations, the number of extracted teeth, the presence of residual roots, fractures and the presence and number of fixed restorations. Results. The mean DMFT of total examined teeth was 20.33±7.63. The greatest percentage found for extracted teeth (63.76%): in the first group 63.23%, and in the second 64.06%. The percentage of teeth that had caries lesions of all examined teeth was 33.48%, while the lowest percentage was for restored teeth (2.76%). In majority of examined people, initial caries, deep caries, or tooth with the exposed pulp (K1 - 51.74% K2 - 40.35%, K3 - 51.75%) were not found. A high percentage of examined people had more than 10 extracted teeth (52.63%). Most of them did not have any restoration in the mouth (81%) and only three persons had fixed denture. Conclusion. Dental status of institutionalized mentally impaired persons showed high prevalence of extracted teeth, significant presence of carious lesions and small percentage of restored teeth with inadequate oral hygiene.
Cartographic modeling of the urban and rural population concentration in Serbia
Jani?-Sirid?anski Marina,JovanoviSlavoljub,?ivkovi? Ljiljana
Journal of the Geographical Institute Jovan Cvijic, SASA , 2007, DOI: 10.2298/ijgi0756147j
Abstract: The opposite demographic courses have resulted in expressive polarization of the area of Serbia on zones of pressures (urban centers) and zones of emptiness (rural settlements). By applying the cartographic method a relation between the areas and population of urban and rural settlements of the Serbia district has been presented as an index of their concentration degree. By constructing the combined sign, a concrete and thematic area has been presented by using a corresponding type of the area - semi-scale. The complete metric coordination and mutual comparability of all series of signs have been attained by the proportional constructing of the thematic map contents.
Influence of Conductor Sag on Magnetic Field Distribution in Vicinity of Power Lines
Mirjana Peri?,Slavoljub Aleksi?
International Journal of Emerging Sciences , 2011,
Abstract: Determination of the magnetic field distribution in the vicinity of power lines is the subject of many studies during previous years. Some researches show that those fields can have an adverse impact on human health. Magnetic field calculation in vicinity of power line usually assume that its conductors are straight, horizontal wires of infinite length. To introduce a three-dimensional analysis into this calculation, an effect of conductor sag is considered. In this paper the conductor sag is approximated with an approximation of the catenary equation. The Biot-Savart law is applied and expressions for magnetic field components are given. Obtained results will be presented graphically and compared with the exact solution.
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