Precision viticulture systems are essential for enhancing traditional intensive viticulture, achieving high-quality results, and minimizing costs. This study explores the integration of Unmanned ...Aerial Vehicles (UAVs) and artificial intelligence in precision viticulture, focusing on vine detection and vineyard zoning. Vine detection employs the YOLO (You Only Look Once) deep learning algorithm, achieving a remarkable 90% accuracy by analysing UAV imagery with various spectral ranges from various phenological stages. Vineyard zoning, achieved through the application of the K-means algorithm, incorporates geospatial data such as the Normalized Difference Vegetation Index (NDVI) and the assessment of nitrogen, phosphorus, and potassium content in leaf blades and petioles. This approach enables efficient resource management tailored to each zone’s specific needs. The research aims to develop a decision-support model for precision viticulture. The proposed model demonstrates a high vine detection accuracy and defines management zones with variable weighting factors assigned to each variable while preserving location information, revealing significant differences in variables. The model’s advantages lie in its rapid results and minimal data requirements, offering profound insights into the benefits of UAV application for precise vineyard management. This approach has the potential to expedite decision making, allowing for adaptive strategies based on the unique conditions of each zone.
The coffin-reliquary for the relics of the holy Serbian king Stefan Uroš III of Dečani has been made around 1343 as a rectangular chest with a gable cover. The present study aimed to identify the ...wood this coffin-reliquary was made, as well as the pigments and metals found on its surface. The combination of anatomical traits (diffuse-porosity, distinct helical thickenings in vessels, simple perforation plates, 3- to 4-seriate noded rays and diffuse-in-aggregates axial parenchyma) showed that the wood belongs to linden, i.e., to the botanical genus
Tilia
L. (Malvaceae). The linden is one of the sacred trees in Serbian culture, and its wood could also be used due to its ease for joinery. X-ray fluorescence spectroscopy (XRF analyzer) was used for in situ determination of the material chemistry of the pigments, as well as the metals on the wooden surfaces of the coffin. Their elemental composition showed that wooden coffin-reliquary was painted with vermilion, malachite or copper resinate, orpiment, and lead white, while metal surfaces were shown to be gold and silver. Unlike a commonly used palette of earthy pigments, these coloring matters belong to precious noble pigments.
Based on a newly adopted “Rulebook on the records of identified changes on buildings in Serbia” (2020) that regulates the content, establishment, maintenance and use of records on identified changes ...on buildings, it is expected that the geodetic-cadastral information system will be extended with these records. The records contain data on determined changes of buildings in relation to the reference epoch of aerial or satellite imagery, namely data on buildings: (1) that are not registered in the real estate cadastre; (2) which are registered in the real estate cadastre, and have been changed in terms of the dimensions in relation to the data registered in the real estate cadastre; (3) which are registered in the real estate cadastre, but are removed on the ground. For this purpose, the LADM-based cadastral data model for Serbia is extended to include records on identified changes on buildings. In the year 2020, Republic Geodetic Authority commenced a new satellite acquisition for the purpose of restoration of official buildings registry, as part of a World Bank project for improving land administration in Serbia. Using this satellite imagery and existing cadastral data, we propose a method based on comparison of object-based and pixel-based image analysis approaches to automatically detect newly built, changed or demolished buildings and import these data into extended cadastral records. Our results, using only VHR images containing only RGB and NIR bands, showed object identification accuracy ranging from 84% to 88%, with kappa statistic from 89% to 96%. The accuracy of obtained results is satisfactory for the purpose of developing a register of changes on buildings to keep cadastral records up to date and to support activities related to legalization of illegal buildings, etc.
Starting from the idea that unexplored areas may yield new and different ethnobotanical information, we performed a survey of traditional uses of plants in two neighboring districts situated in east ...Serbia (Bor and Aleksinac), both lacking in previous ethnobotanical reports, but characterized by an interesting history and culture, together with some specific features. In this study, we hypothesized that such small and specific areas could be of high ethnobotanical importance.
Semi-structured interviews were used with 155 informants. Relative cultural importance (RCI) indices, such as the frequency of citation (FC), relative frequency of citation (RFC), relative importance index (RI), informant consensus factor (ICF-FIC), use value (UV), fidelity level (FL) and Jaccard index (JI), were calculated, and principal coordinate analysis (PCoA) was performed.
In this study, 2333 use-reports and 114 plants were recorded. Of the 101 medical herbs, 33 are included in the European Pharmacopoeia Edition 8.0. The most frequently used mode of preparation was as an infusion (50.0%), while leaf (44.7%) was the most used plant part. The highest FC and RFC values were recorded for Hypericum perforatum L. (13.1 and 0.2, respectively), while the highest RI was documented for Urtica dioica L. (1.0). ICF and FL indices showed important differences among selected groups of informants. The PCoA showed three homogeneous plant groups. Plants were mostly used for the treatment of digestive (49.1%), circulatory (41.2%) and respiratory system disorders (35.1%). Thirty-seven (32.5%) herbs were used for human nutrition, 14 (12.3%) in veterinary medicine, 17 (14.9%) in rituals and ethnoculture, while 24 (21.0%) for miscellaneous purposes. The highest degree of similarity was determined with studies conducted in close proximity. Four species are new to Balkan ethnobotany. New uses for some well-known plants are highlighted.
The study indicated that small and specific areas in the Balkans may be an important reservoir of ethnobotanical knowledge.
Economic diplomacy as such includes targeted activities carried out by representatives of one country with representatives of another country, which in their core aim to increase foreign investments, ...greater volume of exports or imports, as well as strengthening the positions of domestic companies in other countries. In addition to the aforementioned activities, economic diplomacy also includes activities that a country undertakes by participating in international economic organizations as well as joining them. This discipline represents the future and the direction of diplomacy of every modern state that wants to survive in today's market conditions, which are unstable, changing and a decisive factor for every participant. The main goal, focus and function of economic diplomacy must be the protection of national economic interests in every international relationship, whatever level it may be. In this paper, economic diplomacy as a discipline will be dealt with, a short theoretical review will be given, as well as the author's perspectives and views on the progress of the Republic of Serbia and the countries of the region in this field.
Modern trends operating from the environment require a different shaping of the organizational structure of the company. Accordingly, instead of traditional forms, more flexible organizational ...structures appear that are based on the characteristics of organic design. The emphasis is primarily on accepting change, decentralization of decision-making, a wider range of control, teamwork, adequate organizational culture, good interpersonal relationships, continuous learning and innovation development. Technological progress, scientific achievements, and thus the even greater need for continuous learning and acquiring new knowledge, as important characteristics of the modern business environment, have had the greatest impact on shaping the organizational structure of the company. The fact that information technology and knowledge are the basis of new organizational forms speaks in favor of that. Globalization has also played a role in creating the conditions for changing the organizational structure of companies, as well as the time of the COVID 19 pandemic. Organisations have been forced to do business differently and business processes have had to change rapidly in order for organisations to survive. The aim of this work is to indicate the fundamental trends that operate from the business environment and condition the need for the application of more flexible organizational forms. In addition, the aim of the paper is to point out the characteristics of organizational models that have emerged under the influence of these trends.
The heavy metals content (HMs) was investigated in 14 different medicinal plants collected from the three regions in Central Serbia, Zlatar, Sokobanja, and Kopaonik. The concentrations of Cd, Cr, Ni, ...Hg and Pb were determined: Cd (<0.03-2.72 mg/kg); Cr (<0.08-12.1 mg/kg); Ni (<0.08-12.2 mg/kg); Pb (0.6-49.0 mg/kg); the Hg concentration was below the detection limit of 0.06 mg/kg in all samples. The daily intake of HMs due to ingestion of 200 mL of herbal infusion was in all cases below the recommended limit prescribed by the World Health Organization. The estimated daily intake values were below the values for the oral reference dose regulated by the U.S. Environmental Protection Agency (USA EPA). The target hazard quotient and hazard index for Cd, Cr Ni, and Pb were below 1. Nevertheless, due to the tendency of heavy metals to accumulate in the organism, attention should be paid to the daily intake of herbal infusion during long-term usage. Specifically, it is recommended to consume not more than one cup (200 mL) of infusion per day made from thyme (Mt. Zlatar) and blueberry (Mt. Kopaonik), and not more than two cups per day for other herbs.
Ethnobotanical and ethnopharmacological studies of many
Centaurea
species indicated their potential in folk medicine so far. However, investigations of different
Centaurea calcitrapa
L. extracts in ...terms of cytotoxicity and antimicrobial activity against phytopathogens are generally scarce. The phenolic profile and broad antimicrobial activity (especially towards bacterial phytopathogens) of methanol (MeOH), 70% ethanol (EtOH), ethyl-acetate (EtOAc), 50% acetone (Me
2
CO) and dichloromethane: methanol (DCM: MeOH, 1: 1) extracts of
C. calcitrapa
leaves and their potential toxicity on MRC-5 cell line were investigated for the first time. A total of 55 phenolic compounds were identified: 30 phenolic acids and their derivatives, 25 flavonoid glycosides and aglycones. This is also the first report of the presence of centaureidin, jaceidin, kaempferide, nepetin, flavonoid glycosides, phenolic acids and their esters in
C. calcitrapa
extracts. The best results were obtained with EtOAc extract with lowest MIC values expressed in µg/mL ranging from 13 to 25, while methicillin resistant
Staphylococcus aureus
was the most susceptible strain. The most susceptible phytopathogens were
Pseudomonas syringae
pv.
syringae
,
Xanthomonas campestris
pv.
campestris
and
Agrobacterium tumefaciens
. The highest cytotoxicity was recorded for EtOAc and Me
2
CO extracts with the lowest relative and absolute IC
50
values between 88 and 102 µg/mL, while EtOH extract was the least toxic with predicted relative IC
50
value of 1578 µg/mL. Our results indicate that all tested extracts at concentration considered as non-toxic can be one of great importance in combat towards phytopathogenic and human pathogenic strains, as well as natural sources of antimicrobials.
In this work, the essential oils (EOs) obtained by hydrodistillation from the aerial parts of five Artemisia species: A. alba Turra, A. pontica L., A. scoparia Waldst. & Kitam., A. vulgaris L., ...originating from Serbia and A. umbelliformis Lam. subsp. eriantha (Ten.) Vall?s-Xirau & Oliva Bra?as, originating from Montenegro were analyzed by gas chromatography coupled with mass spectrometry (GC/MS). In total, 91 compounds were detected, and 78 were identified. Even though a high number of compounds were detected, each sample had only 18 to 35, attesting to a great diversity of compounds within these taxa. Depending on the species and the locality (geographical origin), the EO was dominated by either monoterpenes or sesquiterpenes, with artemisia ketone, 1,8-cineole (eucalyptol), fragranol, ?-thujone, ?-thujone and myrcene being the dominant compounds. The obtained results were coupled with extensive literature data and used in multivariate chemometric approach to assess the chemophenetic significance of the EO.
In this study, the vegetative anatomy of Artemisia umbelliformis subsp.
eriantha, a Central European alpine glacial relict, wild-growing on Mt.
Durmitor (Montenegro) was examined for the first time. ...The aim was to
investigate the general anatomy and particular anatomical traits which might
have possible taxonomic value. Microscopic slides were prepared according to
the standard histological procedures. The adventitious young root showed a
primary structure, while the older root showed a secondary structure with a
well-developed periderm on its surface. The rhizome showed a primary
structure with elements of a secondary structure (periderm). The stem cross
section is characterized by a round shape with a well-developed periderm at
certain stages, and collateral vascular bundles arranged in a circle. The
petiole is concave in shape with a single-layered epidermis and parenchyma
tissue with one large and two small vascular bundles. Druses and
rhombohedral crystals are observed inside some petiole parenchyma cells. The
leaf lobe cross section has an oblong-linear shape and is isolateral and
amphistomatous in structure. The anticlinal walls of the leaf epidermal
cells are sinuate. Secretory canals are present in the root cortex
parenchyma (endodermal secretory canals) and the rhizome cortical
parenchyma. The stem, petiole and leaf lack secretory canals. The stem and
leaf are covered with T-shaped non-glandular and glandular trichomes. The
taxonomic value of the analyzed characteristics is briefly discussed.
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