Upotreba mobilnih tehnologija u srednjoškolskom obrazovanju

Cilj ovog rada je analiza načina i preferencija upotrebe mobilnih tehnologija i, u okviru njih, posebno, društvenih mreža, za potrebe obrazovanja među srednjoškolskom populacijom u Srbiji. U okviru rada predstavljeno je istraživanje sprovedeno u aprilu 2016. godine, o u potrebi mobilnih tehnologija od strane učenika Pete ekonomske škole iz Beograda. Dobijeni rezultati pokazali su da trendovi korišćenja informacionih tehnologija u domaćim srednjim školama na približno istom nivou kao i u sličnim istraživanjima sprovedenim u drugim državama. Takođe, rezultati istraživanja pokazuju i da postoji prostor za unapređenje primene savremenih informacionih tehnologija u procesu obrazovanja

Enhancing the customer relationship management in public libraries: findings from three developing countries

Purpose – The purpose of this paper is to investigate the possibilities of implementing the customer relationship management (CRM) concept and smart technologies in public libraries in developing countries. The goal was to explore the level of librarians’ awareness about CRM concept and their willingness to accept the CRM concept in libraries. Also, patrons’ satisfaction with the quality of services and relationships in public libraries is explored. Design/methodology/approach – The authors obtained data for this research through two online surveys. The first survey measures librarians’ level of awareness about CRM concept and their perception about CRM and smart technologies concept in public libraries in three developing countries: Serbia, Montenegro and Bosnia and Herzegovina. The second survey measures patrons’ satisfaction with services and relationship in public libraries in these three countries. Findings – The research results revealed that most surveyed librarians are familiar with the CRM concept. However, libraries in these three developing countries barely use CRM or smart technologies to improve the relationship with stakeholders. Also, most patrons are satisfied with relationships and services. The analysis of data indicates no significant difference in the satisfaction level among patrons between these three developing countries. Research limitations/implications – Not all libraries participated in this research. Therefore, the sample is not distributed evenly across different types of libraries or user groups. Future research should include different types of libraries. Practical implications – The results can be used by public libraries in developing countries to improve the relationship with stakeholders harnessing CRM concept and smart technologies. Social implications – The use of CRM in combination with the smart technologies can help leverage the quality of the relationship between public libraries and stakeholders which in turn would secure their support and loyalty in the future. Originality/value – The integration of CRM concept as a component of library business automation process is an idea that has not been discussed widely in the library community and could initiate a positive trend in public libraries in developing countrie

3-Anilino-1-ferrocenylpropan-1-one

In the title ferrocene derivative, [Fe(C5H5)(C14H14NO)], the dihedral angle between the mean planes of the phenyl ring and the substituted cyclo­penta­dienyl ring is 84.4 (1)°. The mol­ecules are connected into centrosymmetric dimers via N—H⋯O hydrogen bonds. In addition, C—H⋯O and C—H⋯N contacts stabilize the crystal packing

Creating Adaptive Environment for e-Learning Courses

In this paper we provide an approach to creating adaptive environment for e-learning courses. In the context of e-education, successful adaptation has to be performed upon learners’ characteristics. Currently, modeling and discovering users’ needs, goals, knowledge preferences and motivations is one of the most challenging tasks in e-learning systems that deal with large volumes of information. Primary goal of the research is to perform personalizing of distance education system, according to students’ learning styles. Main steps and requirements in applying business intelligence techniques in process of personalization are identified. In addition, we propose generic model and architecture of an adaptive e-learning system by describing the structure of an adaptive course and exemplify correlations among e-learning course content and different learning styles. Moreover, research that dealt with application of data mining technique in a real e-learning system was carried out. We performed adaptation of our e-learning courses using the results from the research

Uticaj telesne mase koza i laktacije po redu na porast jaradi u dojnom periodu

The paper presents results of investigation of milk yield by lactation, by order, and mother's body weight on growth rate of kids of the domestic Balkan goat. Daily weight gains of 376 single kids (168 male and 208 female), in three monthly intervals, and their final body weight at 90 days of age were established. Variability of analyzed traits was presented using descriptive statistics parameters, and differences of growth traits for weight gain of kids resulting from the effect of milk yield of female goats by order of lactation were investigated by single analysis of variance. The effect of independent variables, mothers' milk yield and body weight, on body weight of kids was tested using multiple regression analysis. During the entire suckling period, established average values for kids body weight differed significantly (P lt 0.001), increasing from the 1st toward later lactations. At 90 days of age the lowest values were established in kids from the youngest mothers (11.86 kg), while for kids of mothers in the fourth or later lactations these values were higher (13.93 kg). Coefficients of determination indicate that the variability percentage for individual growth traits of kids was in the 0.08 - 0.17 interval, indicating its significance. Both 'b' coefficients (b1 and b2) are positive and statistically highly significant, except for coefficient b2 in the analysis of body weight of kids at birth. The positive sign and high statistical significance indicate a pronounced effect of mother's milk yield and body weight on the body weight of kids up to 90 days of age.U ovom radu prikazani su rezultati ispitivanja uticaja količine mleka u laktaciji po redu, i telesne mase majke na porast jaradi domaće balkanske koze do 90 dana. U cilju ispitivanja razvoja telesne mase jaradi u zavisnosti od količine mleka u laktaciji po redu u toku dojnog perioda ukupno je izmereno 376 jaradi jedinaca (168 muških i 208 ženskih). Varijabilnost analiziranih osobina je prikazana parametrima deskriptivne statistike, dok su razlike u osobinama porasta jaradi koje su nastale pod uticajem mlečosti koza u laktaciji po redu, ispitivane jednostrukom analizom varijanse. Višestruko regresionom analizom ispitivan je uticaj nezavisno promenljivih veličina, mlečnost majke i telesna masa majke, na porast jaradi. Utvrđene vrednosti telesnih masa u toku čitavog dojnog perioda značajno su se razlikovale (P lt 0,001) i povećavale od prve ka kasnijim laktacijama, pri čemu su u uzrastu od 90 dana najmanje vrednosti utvrđene kod jaradi od najmlađih koza (11,86 kg), dok su kod jaradi čije su majke bile u četvrtoj i kasnijim laktacijama te vrednosti iznosile 13,93 kg. Koeficijenti determinacije ukazuju na to da se procenat varijabilnosti pojedinih osobina porasta jaradi nalazio u intervalu od 0,08 do 0,17, što ukazuje na njihovu značajnost. Oba 'b' koeficijenta (b1 i b2) su pozitivna i statistički visoko značajna, osim koeficijenta b2 u analizi telesne mase jaradi pri rođenju. Pozitivni predznak i visoka statistička značajnost ukazuju na izražen uticaj mlečnosti i telesne mase majki na porast jaradi do 90 dana

GUEST EDITORIAL

Nowadays, Internet has evolved into a platform that reshapes modern life and removes borders between real, social and cyber worlds. Internet of Things (IoT) is an emerging paradigm and a cutting edge technology that harnesses a network of embedded, interconnected objects (sensors, actuators, tags or mobile devices) in order to collect various types of information at anytime and anywhere. These devices can be used for building different complex smart environments [1], such as smart homes [2][3], smart classrooms [4], smart offices [5], smart factories [6], smart cities [7], intelligent transportation systems [8], smart power grids [9] or smart e-government. Further, the networks of devices are based on advanced Internet standards. IoT implies seamless integration of numerous types of devices into existing Internet infrastructure. Smart environments can be customized according to users’ needs and preferences which are suitable for automating these environments. Internet of things solutions often encompass integration with cloud-based systems and services [7]: Infrastructure as a service (IaaS), Platform as a service (PaaS) and Software as a service (SaaS)

Supplementary data for the article: Stojsavljević, A.; Trifković, J.; Rasić-Milutinović, Z.; Jovanović, D.; Bogdanović, G.; Mutić, J.; Manojlović, D. Determination of Toxic and Essential Trace Elements in Serum of Healthy and Hypothyroid Respondents by ICP-MS: A Chemometric Approach for Discrimination of Hypothyroidism. Journal of Trace Elements in Medicine and Biology 2018, 48, 134–140. https://doi.org/10.1016/j.jtemb.2018.03.020

Supplementary material for: [https://doi.org/10.1016/j.jtemb.2018.03.020]Related to published version: [http://cherry.chem.bg.ac.rs/handle/123456789/2181]Related to accepted version: [http://cherry.chem.bg.ac.rs/handle/123456789/3074

Crowd-Based Open Innovation: Models, Challenges, and Trends

This article considers concepts, models, achieved results and emerging trends of the open innovation approach to organizing and conducting research and development activities in companies. The goal is to perform a comprehensive systematic analysis of literature that considers the open innovation models that focus on the collaboration of various stakeholders, including companies, academia, government, startups, individuals, and others, in the context of design and development of innovative digital services, through integration of crowd-sourcing and DevOps. As a result, we propose a new framework for organizing open innovation activities using DevOps practices for digitals service development. Finally, we present examples of implementing crowd-based open innovation models in various contexts

A NEW TELEREHABILITATION SYSTEM BASED ON INTERNET OF THINGS

Internet of Things (IoT) applied in healthcare system has huge potential to improve patients' quality of life. Representing network of devices embedded with electronics and sensors, IoT enables constant monitoring of vital body functions, tracking of physical activities of a person and aides rehab physical therapy. Such an IoT-based system would allow standalone recovery process, minimizing need of dedicated medical personnel and could be used in both hospital and home conditions. In this paper, we  present a telerehabilitation system that uses wearable muscle sensor and Microsoft Kinect to create interactive personalized physical therapy that can be carried out at home. Early experiments and results of pilot implementation validate the feasibility and effectiveness of the proposed IoT-enabled telerehabilitation system

Produktivne osobine krompira u agroekološkim uslovima Srbije

The two-year study with nine potato cultivars: Adora, Jaerla, Cleopatra Latona, Liseta (early to medium-early cultivars) and Frisia, Kondor, Desiree and Morene (medium-late to late cultivars) was carried out in three locations: Zemun, Guča and Srbobran. The field trials were set up under different ecological conditions and on different soil types: slightly calcareous chernozem at 100 m above the sea level in Zemun, then on pseudo-gley at 370 m above the sea level in Guča and on chernozem at 86 m above the sea level in Srbobran. Mean monthly temperatures and precipitation were observed during the vegetation season. At the end of the vegetation season, the total yield of tubers and yield of marketable potatoes including all healthy and non-damaged tubers heavier than 70 g were examined. In addition, the average number of tubers per plant and the average tuber weight were dvaluated. Average yields achieved in 2001 were significantly higher than yields obtained in 2000. The highest total yield was achieved with the late potato cultivar Morene in the location of Zemun in 2001. The highest yield of marketable potatoes was detected in the cultivar Cleopatra in Zemun in 2001. The highest average number of tubers per plant was found for the cultivars Desiree, Morene and Latona.U tri lokacije u Srbiji: Zemun, Guča i Srbobran, tokom 2000. i 2001. godine izvedeni su ogledi sa devet različitih sorti krompira: Adora, Jaerla Cleopatra, Latona, Liseta iz grupe ranih do srednje ranih sorti, kao i Frisia, Kondor, Desiree, Morene iz grupe srednje kasnih do kasnih sorti. Postavljeni su poljski ogledi u tri različite lokacije sa tri različita tipa zemljišta: na slabokarbonatnom tipu černozema na 100 m nadmorske visine u Zemunu, zatim na pseudogleju na 370 m nadmorske visine u Guči i na zemljištu tipa černozem na 86 m nadmorske visine u Srbobranu. Srednje mesečne temperature, kao i suma padavina praćene su tokom vegetacionog perioda. Na kraju vegetacije utvrđene su sledeće produktivne karakteristike: ukupan prinos, prinos tržišnih krtola, koje uključuju zdrave, neoštećene krtole teže od 70 grama, prosečan broj krtola po biljci, prosečna masa krtola kao i veličina krtola. U 2001. godini ostvaren je značajno viši prinos krompira u svim lokacijama u odnosu na prinose ostvarene u 2000. godini. Apsolutno najviši prinos ostvarila je sorta Morene u Zemunu 2001. godine, dok je u istoj godini najviši prinos tržišnih krtola postigla sorta Cleopatra. Najveći broj krtola po biljci je utvrđen kod sorti Desiree, Morene i Latona