bluuebunny/crossref_metadata_2025 huggingface dataset:
PENGARUH KUALITAS PELAYANAN DAN KEMUDAHAN TERHADAP LOYALITAS DENGAN KEPUASAN PELANGGAN SEBAGAI VARIABEL INTERVENING
Authors: Munfaqiroh Siti , Wahyu Arminda Dacruz Rama Dea Dike
Published: July 2022

Abstrak

Tujuan penelitian adalah untuk mengetahui pengaruh kualitas pelayanan dan kemudahan terhadap loyalitas dengan kepuasan sebagai variable intervening. Populasi dalam penelitian ini seluruh pelanggan yang menggunakan Jenius Mobile berjumlah 2,8 juta hingga akhir September 2020. Dengan jumlah sampel sebanyak 100 responden. Metode analisis yang digunakan adalah analisis jalur. Berdasarkan hasil penelitian dan pembahasan yang telah dilakukan, maka dapat ditarik kesimpulan sebagai berikut: tidak ada pengaruh Service Quality yang diberikan Jenius Mobile terhadap loyalitas pelanggan, tetapi ada pengaruh terhadap kepuasan pelanggan, dan tidak ada pengaruh terhadap kepuasan pelanggan. Pengaruh Kualitas Pelayanan melalui Kepuasan terhadap Loyalitas Pelanggan. Kemudian tidak ada pengaruh Ease terhadap loyalitas pelanggan, tetapi ada pengaruh terhadap kepuasan pelanggan, dan tidak ada pengaruh melalui kepuasan terhadap loyalitas pelanggan. Kemudian ada pengaruh kepuasan terhadap loyalitas pelanggan.
TANGGAPAN PETUGAS PASASI TENTANG KETAATAN PENUMPANG TERHADAP PROTOKOL KESEHATAN PADA ERA NEW NORMAL DI BANDAR UDARA INTERNASIONAL ADI SOEMARMO
Authors: Sutarwati Sri , Arifah
Published: July 2022

Pada masa pandemi Covid-19, pemerintah membuat kebijakan yang disebut new normal. Pada era new normal penumpang pesawat udara wajib mentaati protokol kesehatan baik sebelum penerbangan (Pre-flight), selama penerbangan (In-flight), maupun setelah penerbangan (Post-flight). Penelitian ini bertujuan untuk mengetahui dan menganalisis tanggapan petugas pasasi tentang ketaatan penumpang terhadap protokol kesehatan pada saat check-in dan boarding pada  era New Normal di Bandar Udara Internasional Adi Soemarmo.Penelitian ini termasuk jenis penelitian empiris, yaitu penelitian dengan adanya data-data lapangan sebagai sumber data utama. Sumber data dalam penelitian ini diperoleh dari data primer dan data sekunder yaitu menggunakan wawancara, observasi, dan dokumentasi. Teknik analisis data dalam penelitian ini menggunakan analisis deskriptif dengan pendekatan kualitatif dan teknik induktif. Hasil penelitian menunjukkan  bahwa sebagian besar penumpang telah mentaati protokol kesehatan seperti menggunakan masker, menjaga jarak, menempati tempat duduk yang sudah disediakan di ruang tunggu, namun masih ada beberapa penumpang yang tidak mentaati protokol kesehatan yaitu memakai masker yang tidak sesuai standar penerbangan, tidak menjaga jarak pada waktu mengantri saat  boarding dan menempati tempat duduk yang sudah diberi tanda silang di ruang tunggu keberangkatan (khususnya untuk penumpang rombongan). Bagi penumpang yang memakai masker tidak sesuai standar penerbangan, petugas pasasi akan menegur dan meminta untuk mengganti masker yang sudah disediakan oleh petugas. Sedangkan penumpang yang tidak menjaga jarak pada waktu mengantri saat boarding serta penumpang rombongan yang sering tidak menjaga jarak pada waktu duduk di ruang tunggu keberangkatan, petugas berusaha menegur tetapi ketika petugas lengah mereka kembali tidak menjaga jarak.
DATABASE AERODINAMIKA ROKET BALISTIK 122
Authors: Admin Admin , Sofyan Edi , Eko Prasetiyo Erwan
Published: July 2022

Roket adalah wahana terbang yang memiliki sistem propulsi dengan membawa bahan bakar dan oksigen di dalam badan roket tersebut sebagai gaya dorong. Tentunya sebuah roket harus mempunyai kestabilan yang baik agar dapat mencapai target yang ditentukan dengan tepat. Kestabilan aerodinamika merupakan hal yang harus diperhatikan karena sangat berpengaruh terhadap performa terbang roket. Performa terbang sangat dipengaruhi oleh beberapa karakteristik seperti CL, CD, dan CM.  Pada penelitian ini dilakukan analisis aerodinamika pada Roket Balistikk 122 dengan memvariasikan alpha (α) dari – 20 hingga 18 dan Mach Number dari 0.1 hingga 2.9 untuk mengetahui karakterisitik roket pada saat terbang. Metode yang digunakan dalam penelitian ini yaitu dengan menggunakan Software Digital Datcom untuk mendapatkan database aerodinamika roket balistik 122 dan menggunakan nilai CA (Axial Force Moment) dan CN (Normal Force Coefficient) sebagai pengganti CL dan CD. Dari hasil perhitungan menggunakan software Digital Datcom dapat disimpulkan bahwa semakin bertambah nya alpha dan Mach number, maka nilai CA akan bernilai konstan pada 0.1 hingga 0.7 serta mengalami kenaikan pada Mach 0.7 sampai 15. Nilai CN mengalami kenaikan seiring bertambah nya alpha dan Mach Number sehingga menyebabkan gaya lift mengalami kenaikan dan nilai CM (Coefficient Moment) mengalami penurunan seiring bertambahnya alpha dan Mach Number. Dalam hal ini roket telah memenuhi kriteria kestabilan, sehingga roket ini dapat dikatakan stabil.
ANALISA PERFORMA HEAT EXCHANGER DENGAN PENAMBAHAN VORTEX GENERATOR TIPE TWIST WITH HOLE DIKOMBINASI DENGAN WIRE COIL GUNA MENGATASI ICING PADA KARBURATOR PISTON ENGINE
Authors: Adina Victori Veronica , Marausna Gaguk , Jayadi Farid
Published: July 2022

Kebutuhan sarana transportasi udara meningkat setiap tahunnya, dikarenakan hal itu  pula maka perlu adanya peningkatan keamanan dan perawatan suatu pesawat terbang. Salah satu jenis pesawat terbang yang sering digunakan oleh manusia adalah pesawat berjenis piston engine. Pada kondisi tertentu pesawat dengan mesin piston engine ini dapat mengalami icing termasuk pada engine, kondisi tersebut dapat mengganggu proses terbang nya pesawat, maka dari itu penggunaan alat heat exchanger digunakan pada penelitian ini karena fungsi dari alat tersebut ialah sebagai penukar kalor antara fluida panas yaitu gas buang dan fluida dingin yang digunakan ialah udara hal ini bertujuan untuk mencegah dan menghancurkan kemunculan lapisan es pada mesin terutama pada karburator. Penelitian ini menggunakan metode eksperimental dengan cara membuat desain sesuai prototype alat heat exchanger yang memanfaatkan gas buang sebagai pencegah icing pada karburator piston engine. Pada tabung yang dilewati fluida gas buang ditambahkan vortex generator tipe twist with hole dengan kombinasi wire coil untuk meningkatkan efektifitas dari alat heat exchanger. Variasi twist ratio pada vortex generator disini adalah (ptw/Wtw) 3, 4, dan 5 .Hasil menunjukan bahwa penambahan vortex generator tipe twist with hole kombinasi wire coil ini dapat mempengaruhi efektifitas (ε) suatu alat sebesar 95.8% di twist ratio 3 dengan nilai Re fluida yang melewati vortex generator sebesar 66491.7, koefisien perpindahan kalor menyeluruh (U0) sebesar 65.2746 W/m2. ˚C.
SISTEM KOMPRESI DATA PADA MUATAN ROKET MENGGUNAKAN KODE HUFFMAN
Authors: Admin Admin , Eko Prasetiyo Erwan
Published: July 2022

Muatan roket (payload) merupakan teknologi terapan dengan pemanfaatan kendali data jarak jauh. Teknologi ini mendukung fungsionalitas sistem pemantauan data ke Ground Control Station (GCS). GCS dijalankan oleh operator yang jaraknya jauh dari roket, sehingga operator dapat langsung melihat paket data yang dibutuhkan untuk keperluan pemantauan secara real-time. Walaupun sistem pemantauan ini dapat berjalan secara real-time, terdapat beberapa kendala yang terjadi yaitu kehilangan data akibat adanya keterlambatan data pada saat pengiriman data. Keterlambatan data dapat terjadi dikarenakan jumlah paket data dan transfer data saat pengiriman tidak seimbang. Jumlah paket data ini tidak diimbangi dengan kapasitas jaringan komunikasi data yang ditentukan. Untuk mengatasi hal tersebut terdapat salah satu teknik yang dapat diterapkan yaitu sistem kompresi data. Kompresi data yang diterapkan adalah metode kompresi lossless yang dibangun menggunakan kode Huffman. Hasil penelitian menunjukkan bahwa algoritma ini dapat melakukan kompresi data sebesar 41,25% dari data aslinya. Sistem roket dapat membaca dan mengirim sensor sebanyak 22 baris data dalam waktu 2 detik. Pada GCS, data yang diterima dan diolah dengan algoritma dekompresi Huffman menghasilkan data yang tervalidasi sebesar 19 baris data atau 86% data diterima.
KARAKTERISTIK KOMPONEN FUEL NOZZLE GASKET PESAWAT CESSNA GRAND CARAVAN 208B
Authors: Admin Admin , Suroso Indreswari , Utami Noviana
Published: July 2022

Pesawat Cessna Grand Caravan 208B merupakan pesawat angkut ringan bermesin tunggal dengan penggerak propeller atau engine turboprop. Ada banyak komponen yang saling berhubungan pada mesin pesawat, salah satunya adalah fuel nozzle gasket yang berada diantara fuel nozzle dan combustion chamber yang berfungsi untuk menjaga tekanan yang dihasilkan dari ruang bakar agar tidak keluar dari mesin. Tujuan penelitian ini adalah untuk mempelajari karakteristik komponen fuel nozzle gasket pesawat Cessna Grand Carravan 208B yang meliputi 1). Komposisi kimia, 2.) Kekerasan Vickers, 3). Laju keausan, 4). Struktur mikro, dan 5). Laju korosi.

Metode yang digunakan dalam penelitian ini adalah metode kualitatif melalui pengujian: 1). komposisi kimia yang digunakan untuk mempelajari unsur-unsur dan persentase, 2). kekerasan Vickers yang digunakan untuk mempelajari tingkat kekerasan. 3). keausan yang digunakan untuk mempelajari laju keausan, 4). struktur mikro yang digunakan untuk mempelajari fasa-fasa yang terjadi, dan 5). korosi yang digunakan untuk mempelajari laju korosi.

Karakteristik komponen fuel nozzle gasket pesawat Cessna Grand Carravan 208B meliputi 1). komposisi kimia dengan unsur-unsur dominan adalah unsur-unsur Fe 69,6500%; Cr 17,600%; Ni 9,1190%; Mn 1,7230%; Si 0,4920% dan termasuk dalam paduan baja austenitik AISI 304 dengan unsur-unsur C < 0,07%; Mn <2%; Cr 17 - 19%; dan Ni 8,5 - 10,5%, 2). kekerasan Vickers rata-rata sebesar 162,26 VHN yang dipengaruhi unsur-unsur Cr, Mn, dan C, 3). struktur mikro menunjukkan fasa perlit (yang tersusun oleh unsur Fe dan unsur C) lebih dominan dibandingkan dengan fasa ferit (yang tersusun oleh unsur Cr), 4). laju keausan sebesar 0,56020 mm3/kgm dan tergolong rendah yang dipengaruhi adanya unsur Mn. 5). laju korosi sebesar 0,036 MPY dan dikategorikan sebagai relative corrosion resistance “outstanding” yang dipengaruhi oleh unsur Cr dan unsur Ni.
Design of Hybrid Renewable Energy Systems for a Village in Selangor, Malaysia
Authors: Muaz Izzuddeen Sabudin  , Mohd Noor Syawal Mustapha  , Muhammad Adzim Mohd Rozi  , Devaraj Tharuma Rajah
Published: July 2022

Conventional fossil fuel generation releases high amount of carbon dioxide and contributed to the climate change problem. Hence, the use of renewable energy sources is important to mitigate the greenhouse gasses emissions. Remote or rural areas relies heavily on diesel generations for electricity due to no grid connection. Therefore, a microgrid system with renewable resources has high potential for implementation in these areas.  This paper discusses on the hybrid renewable energy system design for a village in Selangor, Malaysia. The load profile data collected based on survey and interview with the locals. Meanwhile, the solar radiation and temperature data were obtained from NASA POWER database. The hydropower resource data was obtained through site visit at the location. HOMER software was used to simulate and determine the most optimal hybrid renewable energy system. Additionally, sensitivity analysis was conducted to identify effect of growth in load profile with respect to the optimal configuration. The optimization results shows that PV-hydro-grid is the most optimal system. It has lower Net Present Cost with higher renewable penetration compared to other configurations.
Wenn freiwilliges Engagement das Soziale nicht mehr retten kann
Authors: Löffler Eva Maria
Published: July 2022

Die Maßnahmen zur Eindämmung der Corona-Pandemie haben große Teile des beruflichen, privaten und sozialen Lebens und so auch des ehrenamtlichen Handelns betroffen. Der vorliegende Beitrag legt den Fokus auf die Veränderungen, die das freiwillige Engagement von Älteren für ältere und alte Menschen betrafen.
La contribution des institutions publiques au développement économique de la province du Haut-Katanga : cadre juridique, enjeux et perspectives
Authors: Isidore Mfuamba Mulumba , Clémence Kishiba Malifwa , Gody Ngosa Bupe
Published: July 2022

Le droit au développement est l’un des droits collectifs [doits de troisième génération] constitutionnalisés en RDC. Dans le cadre de l’Organisation des Nations Unies, ce droit est au centre des Objectifs de développement durable (ODD) et le développement des Nations et les droits de l’homme dont fait partie le droit au développement, sont les objectifs de cette Organisation. La question de développement de la RDC s’est avérée à ce jour cruciale, car le pays est extrêmement riche en ressources naturelles mais sa population très pauvres et exposée aux plusieurs défis qui empêchent le développement intégral, harmonieux et durable. Pour ce qui concerne la province du Haut Katanga, la province est l’une des mieux placées pour amorcer le développement économique non seulement pour les générations présentes mais aussi celles futures des toutes ses communautés, car elle est globalement dotée de ressources naturelles. Sans être pessimiste excessif, pour méconnaitre les efforts que fournit le Gouvernement provincial du Haut-Katanga pour le développement économique de sa province, il y a des défis à son niveau pour permettre un tel type de développement. Ainsi, vu qu’il existe une forte corrélation entre la qualité des institutions publiques et la croissance économique d’une société, cette réflexion aborde la problématique de la contribution des institutions publiques au développement économique de la province du Haut-Katanga, avec un regard croisé sur le cadre juridique, les enjeux et les perspectives dans le secteur minier, qui est aujourd’hui considéré comme le principal pourvoyeur et la colonne vertébrale de l’économie congolaise.
A Assistência Técnica e Extensão Rural (ATER) da EMATER e do Projeto Dom Helder Câmara (PDHC) no Território da Cidadania Sertão do Apodi, Rio Grande do Norte
Authors: Gurgel Rosane Fernandes de Sousa , Nunes Emanoel Márcio , Silva Vívian Menezes da
Published: July 2022

O objetivo é analisar aspectos característicos de estruturas distintas de Assistência Técnica e Extensão Rural (ATER), representadas pelo Instituto de Assistência Técnica e Extensão Rural (EMATER-RN), e pelo Projeto Dom Helder Câmara (PDHC) em assentamentos de reforma agrária do Território da Cidadania Sertão do Apodi, no Rio Grande do Norte, Brasil. Foi utilizada a técnica de grupos focais, como ferramenta de investigação qualitativa com pleno comprometimento com a perspectiva metacientífica compreensivista. Trata-se de uma pesquisa qualitativa com entrevistas guiadas por um roteiro semiestruturado com lideranças territoriais, organizações executoras e beneficiários diretos de ações de ATER realizadas pela EMATER e pelo PDHC. Os resultados da pesquisa, após a análise das estruturas distintas de ATER, revelam a necessidade no sentido de melhorar os serviços de ATER, considerando projetos experimentais como o PDHC, condizentes com os saberes locais dos agricultores familiares.
Solubility measurement of poorly soluble drugs in fasted state simulated intestinal fluid
Authors: McKinnon Zoe , Batchelor Hannah , Khadra Ibrahim , Halbert Gavin
Published: July 2022

Adequatedrug solubility in the gastrointestinal tract is essential for systemic therapyof orally administered medications. To carry out research on the solubility ofpoorly soluble drugs in vitro, simulated intestinal fluid (SIF) is usedin place of human intestinal fluid (HIF). However, typical SIF reflects averagecompositions of HIF rather than the full range of compositions previouslyreported. This study examines a new suite of SIF media (based on variabilityobserved in HIF) to explore the range of solubility of four poorly soluble drugs(Naproxen, Indomethacin, Phenytoin and Tadalafil) in the fasted state.
Von der mathematischen zur kritischen Metaphysik der Natur. Lambert und Kant
Authors: Stiening Gideon
Published: July 2022

In the mid-1760s, Johann Heinrich Lambert wrote a letter to Kant who offered cooperation with a view to reforming metaphysics. Based on the short correspondence between the two philosophers, it can be shown that this cooperation could never really come about. Nevertheless the thesis was sometimes put forward in research that Lambert had a defining influence on Kant’s Metaphysical Foundations of Natural Science, also, and above all, with regard to the Newton-critical moments of this natur­al theory. However, this thesis can only be confirmed in relation to individual theorems, such as the relationship between attraction and repulsion force, even though the reasons for Lambert and Kant’s deviation from Newton’s theory of gravity also differ. For in its main features the transcendental metaphysics of Kant’s nature is substantially different from the mathematical methodology of Lambert’s theory of nature. In addition, Lambert stuck throughout his life to a theonomous natural teleology in the succession of Wolff, which was fundamentally made impossible by the Critique of Pure Reason: because the wise “intention of the creator”, which Lambert’s empirical-rationalistic cosmology could not and did not want to do without, could no longer be referred to in a rational context according to the Critique of Pure Reason. Even if Lambert certainly had moments of the Kantian theory of matter or — as Kant himself admitted — elements of the spatial theory of the first Critique, there is no way from his mathematisation of metaphysics and his natural teleology to the fundamental innovation of the Metaphysical Foundations.
Broken Facets of Ethical Universalism. Commentary on the Book Universality in Morality
Authors: Ugleva Anastasia V.
Published: July 2022

Some ideas expressed in the collective monograph Universality in Morality (2020), edited by Ruben Apressyan, are here critically examined. The book is based on the results of a large-scale study by professional ethical philosophers devoted to the question of the nature of universality in morality and the mechanisms of universalisation of individual maxims and norms from antiquity to modern ethical theories, represented above all by the analytical tradition in philosophy. Of great interest is the analysis of related phenomena in morality, which makes it possible to determine the causes and nature of the transformation of morality in different eras and the accompanying change in the terminological apparatus of absolute ethical universalism, considered to be the starting point in the analysis of key modern concepts of moral universality. The article also suggests possible avenues for continued research in this area which could prompt modifications not only to the history of the concept of universality in morality, but also to our assessment of the contribution of individual authors and entire eras to the progress of human civilisation. This concerns above all the moral theory of contractarianism and the Enlightenment. Focus on their ideas goes a long way to determining the direction of current historical-philosophical research that reconstructs the history of ethical teachings and individual concepts. The importance attached today to a new view of the theory of the social contract, considered not only from socio-political but also from moral positions, forces us to approach in a new way the question concerning the universality of the key philosophical categories developed within this theory throughout its history. Elaborating the ideas set forth in the monograph, the author also stresses the relevance of the problem of justifying the thesis about the moral law as an analogue of the universal law of nature in the modern context.
Catchment area, environmental variables and habitat type as predictors of the distribution and abundance of Portulaca oleracea L. in the riparian areas of Serbia
Authors: Anđelković Ana , Popović Slađana , Živković Milica , Cvijanović Dušanka , Novković Maja , Marisavljević Dragana , Pavlović Danijela , Radulović Snežana
Published: July 2022

Portulaca oleracea L. is one of the most widely distributed plant species, invading a host of worldwide regions. Rivers and canals, as corridors connecting neighboring habitats, are known to exhibit high invasion levels. Consequently, the aim of this paper was to show which catchment areas, environmental factors and habitat types can be seen as predictors of the presence of this invasive species in the riparian areas of Serbia. Field research was carried out at 250 field sites, where the cover and abundance of P. oleracea, relevant environmental variables and habitat type were recorded. Redundancy analysis (RDA) and response curves fitted using a generalized linear model (GLM) were used to show the relation of the cover of P. oleracea and the following variables: catchment area, predominant bank material, elevation, and the total number of invasive species on site. A non-metric multidimensional scaling (NMDS) was used to group sites where P. oleracea was found, based on the values of its cover. In general, primarily the rivers in the northern, low-lying part of Serbia can be seen as important corridors of the spread of P. oleracea. Its dominance is especially associated with areas draining into the Danube and Sava rivers and field sites characterized by a high pressure of invasive plants. Of the total number of records, the highest number of invaded field sites was recorded along the Danube, Tisa and Zapadna Morava rivers. Regarding the environmental and habitat predictors, the results have shown that the abundance of P. oleracea is associated with gravelly and sandy banks and grassland habitat types, primarily anthropogenic herb stands.
Phytochemical and antimicrobial profile of black currant berries and leaves
Authors: Paunović Svetlana , Mašković Pavle , Milinković Mira
Published: July 2022

The purpose of study was to identify polyphenolic compounds and antimicrobial properties in berries and leaves of black currant (Ribes nigrum L.). Black currant berries and leaves showed different characteristics. Berries had a higher levels of the studied parameters compared to leaves. Berry extracts contained 2.90 to 5.90 times more total phenolics, flavonoids, condensed tannins and gallotannins compared to leaf extracts, and total antioxidant activity was 5.82 times higher in berries than in leaves. The main flavonol found in our sample of black currant berries and leaves was quercetin, followed by myricetin, while kaempferol was present in very small amounts. The most abundant phenolic acid in berry extract was caffeic acid, while leaf extract was dominated by ferulic acid. Microbial properties of extracts were examined using eight selected indicator strains. The tested extracts showed strong antimicrobial activity, ranging from 55.82 to 199.21 mg mL-1. The results suggest that berries and leaves of black currant are a good source of polyphenolic compounds and have strong antimicrobial activity.
Assessment of biogenic amine production by lactic acid bacteria isolated from Serbian traditionally fermented foods
Authors: Vesković-Moračanin Slavica , Stefanović Srđan , Borović Branka , Nastasijević Ivan , Milijašević Milan , Stojanova Monika , Đukić Dragutin
Published: July 2022

The aim of this study was to monitor the production of biogenic amines by 156 selected lactic acid bacteria (LAB) strains isolated from Serbian traditionally fermented sausages and cheeses. The method for the determination of biogenic amines is liquid chromatography tandem mass spectrometry (LC-MS/MS). The measured concentrations of putrescine, cadaverine, tryptamine and spermidine (except in 13 LAB strains) were below the detection limit of the analytical method (0.1 mg/L), whereas those of histamine, tyramine and spermine were above the limit of detection, but still not significant. Tyramine was the only amine that had a measured concentration of 59.89 ± 0.06 mg L-1. Most of the tested LAB strains produced tyramine in broth below 26 mg L-1 with the exception of Enterococcus faecalis strains (59.89 ± 6.66 mg L-1) and Enterococcus faecium strains (47.33 ± 8.58 mg L-1). The low concentrations of biogenic amines are considered non-significant from both a technological and safety point of view.
Economic analysis of field crop production on a family farm
Authors: Veljković Biljana , Koprivica Ranko , Gavrilović Marija , Šiljić Aleksandar , Rašković Vera , Stošić Nemanja , Terzić Dragan
Published: July 2022

An economic analysis of field crop (wheat, corn, triticale and sunflower) production on a family farm, representing a case-study average farm, during one production year involved calculation of production costs, gross margin, economic efficiency and rate of profitability. Calculations showed that the highest amount of gross margin was achieved with corn, followed by sunflower, triticale and wheat. The calculated values of the coefficient of efficiency were in the respective order: 3.59 for corn, 2.16 for sunflower, 1.89 for triticale and 1.79 for wheat. The share of variable costs was also indicated, with special emphasis on high costs of mineral fertilizers and machinery.
A "dilute-and-shoot" method for the Alternaria mycotoxins determination in wheat
Authors: Vuković Gorica , Bursić Vojislava , Stojanović Tijana , Puvača Nikola , Marinković Dušan , Petrović Aleksandra , Konstantinović Bojan , Samardžić Nataša , Popov Milena
Published: July 2022

Alternaria mycotoxins are the secondary metabolites for which the regulations, as well as the standardization, are yet going to be established by the European Commission and the European Committee for Standardization. This paper describes the possibility to apply a "dilute-and-shoot" method for the determination of tentoxin, alternariol and alternariol monomethyl ether in wheat. The used chromatographic method was liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS). The strategy involves extraction the samples with the acetonitrile and water mixture (84/16, v/v), followed by the vortexing, centrifugation and filtration before the injection into the LC-MS/MS system. The recovery was assessed by analysis of spiked samples with a mixture of standard solutions of all three mycotoxins at two spiking levels (0.02 and 0.1 mg kg-1) in six replicates. The obtained average recoveries and precisions (expressed as the RSDr, %) for "dilute-and-shoot" method were 76.3% (RSDr of 6.47%) for alternariol, 105.2% (RSDr of 2.16%) for tentoxin, and 86.0% (RSDr of 3.91%) for alternariol monomethyl ether. All the obtained validation data were in accordance with the Commission Decision 2002/657/EC and Commission Regulation (EC) No 401/2006. The main advantages of the present method are the simple and easy sample preparation, along with the high-sensitivity detection.
Understanding the youth tourists' motivation to attend rural gastronomic festivals in the Republic of Serbia
Authors: Seočanac Marijana
Published: July 2022

This study aims to examine the motivation of young tourists to attend gastronomic festivals in rural areas in the Republic of Serbia. In addition, it seeks to find out whether their motivation differs depending on their knowledge of and interest in gastronomy. The research was conducted on a sample of 125 respondents. The collected data was analyzed through the Statistical Package for Social Sciences (SPSS 20), using descriptive statistics, the K-means clustering multivariate grouping technique, and nonparametric statistical procedures (Kruskal-Wallis H test and Mann-Whitney U test). The results have shown that the opportunity to try new and varied foods, as well as enjoying the atmosphere at the festival, are the main motives for young tourists to attend gastronomic festivals in rural areas in the Republic of Serbia. Additionally, it was discovered that the gastronomic motifs of young tourists are different and conditioned by their knowledge of and interest in gastronomy.
Consumer's characteristics and attitudes towards organic food products in times of Covid-19 pandemic
Authors: Vapa Tankosić , Hanić Hasan , Bugarčić Milica
Published: July 2022

The pandemic caused by the Covid-19 virus significantly affected the consumers' behavior. The subject of the paper is to analyze the consumer characteristics, the consumer attitudes towards organic food products, as well as the changes in the consumer behavior. The research was performed in 2021 in the Republic of Serbia. The statistical software package SPSS has been utilized for data analysis. Our findings show that, in times of COVID-19 pandemic, the consumers have a very positive perception of nutritional values of organic food products with an expressed willingness to pay 20-30% more for the organic products, in regard to conventional products. The main reason for buying such products is less chemistry and child health. The main reason for insufficient consumption is the high price. The monthly income of irregular consumers of organic food products has predicted the willingness to pay, while the household size has predicted the assessment of the organic products nutritional properties.
Intangible cultural heritage and their influence on financial results in rural tourism
Authors: Starčević Krešimir , Vojinović Željko , Glavaš Jerko
Published: July 2022

Many scientists and native stakeholders are increasingly pointing to the importance of connection between cultural heritage and tourism, and influence of that connection on the financial results of entrepreneurs in rural tourism. Therefore, the importance of cultural heritage and especially intangible cultural heritage is being discussed. In the continuation, the status of connection between intangible cultural heritage and rural tourism is analyzed. The paper further points to the need for planned and organized, stronger content linking of rural tourism and intangible cultural heritage, that should influence financial results of the entrepreneurs in rural tourism. An example from the Croatia is given which is using intangible cultural heritage (traditional music and dance) in (rural) tourism offering. The link between this connection and financial results of the company is analyzed. The conclusion provides recommendations for better connection of the intangible cultural heritage and the rural tourism, ensuring the better financial results.
The role of branding agricultural products in better market valorization
Authors: Uzelac Ozren , Dukić-Mijatović Marijana , Lukinović Mario
Published: July 2022

The purpose of this paper is to consider role of branding agricultural products in better market valorization. The benefit of branding is especially significant for rural and insufficiently developed environment. The problems of rural environments are multidimensional, but revitalization and improvement of development leads to strengthening competitiveness of these areas. The higher price of products enables the increase of income of agricultural workers, as well as diversification of the rural economy and creation of conditions of better socioeconomic aspects in rural environments. Creation of a more desirable image of an agricultural product most often has a strong reflection on the area of origin, as well as on reformation of the social attitude towards that environment. Branded products and services have a higher market value, due to which legal aspects enabling not only branding, but maintenance of a brand as well, are of special significance.
Digital economy and information society scope and approach of legal regulation
Authors: Dukić-Mijatović Marijana , Mirković Predrag
Published: July 2022

The dynamic development of the global economy and trade is additionally connected with the exponential development of digital technologies. The progressive development of information technologies, as a segment of the information society, has influenced the changes in the traditional ways of performing economic activities. Global trends in the digital economy, which has equal importance in the domestic and foreign economic markets, require that countries adapt their legislation to the needs of the new way of functioning of the economy and economic relations in general. When it comes to digital economy, it is viewed on a par with the information society. The necessity of the existence and development of the digital economy is cohesively connected with the state of the information society in one economic space. In this domain, the digital economy relies on the degree of development of the information society of a market, since its progressive development is previously determined by the degree of development of the information society itself. Today, this parallel has been scientifically and professionally verified, and the development of the digital economy of a society is interdependent with the development of the information society. Given that this is a socio-economic phenomenon, the level of development of the information society, and consequently the digital economy, is in one segment pre-determined by the legislative framework governing the area. The subject of the research is the analysis of relevant issues in the context of the connection between the digital economy and the information society on the one hand and the legislative framework that regulates particular issues of interest in this area. The aim of the research is to define the application of the approach to the legal regulation of relevant issues in the field of digital economy from the aspect of the internal law of the Republic of Serbia.
Intangible and integrated responding
Authors: Gogić Nemanja
Published: July 2022

Compilation of non-financial and integrated reporting has arisen due to declining credibility and confidence in financial reporting, which have arisen due to the global economic crisis, blaming the growing number of accounting and company fraud in the last period, climate change, doubts about social and environmental implications globalization. The reaction to such an environment is the distrust of investors and other state holders in traditional financial reporting as well as the growing popularity of topics, corporate governance, sustainable development, corporate sustainability and integrated reporting. The paper presents the many advantages and limitations that companies face when compiling and presenting non-financial and integrated reporting, as the supreme framework for reporting.
The business intelligence in modern economic and security circumstances
Authors: Lončar Miloš , Marić Dražen
Published: July 2022

In this paper, the author precisely defines and analyzes the essence of the term intelligence, especially the derived term "economic/business intelligence", which seems to be of paramount significance today, given the dominance of geoeconomics over geopolitics. To acquire knowledge means to get informed about a certain subject of interest. By acquiring knowledge, the possibility of further development and progress is created, which implies movement towards a predetermined goal, in any area of life and work of an individual, triggering certain actions and activities of the organization to which a person belongs. This refers equally to the whole nation, state, various social organizations, as well as different structures and forms of organization. Noticing the regularity that the overall strength of a state is primarily determined by the degree of economic development of society, knowing the circumstances that contribute or may contribute to a country's economic development is the basis and starting point on which to build influence, place and role of people, state and society in time and space. In modern times, to be informed means to be prepared for an adequate response to all challenges, risks and threats that arise on the path of development. It also means being in the position to create influential and important events. The positioning achieved in this way is a factor of stability of the society, which additionally enables the unhindered development of the entire community. Recognizing the importance of the term intelligence, there is a need to get to know and understand the socio-economic impact of intelligence on the development and security of the state. That is the subject of this research paper, which aims to provide an answer to the following question: What is the significance, place and role of intelligence in modern economic and security circumstances?
Mediating role of Organizational learning mechanisms in teacher behavior
Authors: Unal Ali , Ates Aysel
Published: July 2022

The research determined the effect of teachers' organizational justice perceptions on organizational learning mechanisms, organizational cynicism, and deviant workplace behaviors. Linear regression analysis was performed to determine the effect of organizational justice perception on other variables and the Sobel test was used to test the mediating role of organizational learning mechanisms. The perception of organizational justice perception has a significant effect on organizational learning mechanisms, organizational cynicism, and deviant workplace behaviors. There is a full mediation role of organizational learning mechanisms in the effect of organizational justice perception on deviant workplace behavior; On the other hand, a partial mediation role in the effect of organizational justice perception on organizational cynicism was observed. Various suggestions were developed in light of the findings.
Teacher turnover: A continual problem in Turkey
Authors: Turhan Mehmet , Basri Memduhoglu
Published: July 2022

This study aims to determine the reasons for teacher turnover in the Van province, Turkey, and correspondingly, to propose solutions according to teacher views. The research is based on Q Methodology, which is used to reveal organizations' typographies and to determine the issues on which the organization's members arrive at a consensus or disagree. It was determined that providing economic stimulus, together with precautions to eliminate safety concerns and transportation problems, increasing social, artistic, and cultural activities and giving extra service/precedence scores, will to some extent help to increase the average length of service for teachers working in Van. In addition, improvements related to teachers' working conditions will help to decrease teacher turnover and related problems. Regulations to decrease teacher turnover are recommended with the aim of encouraging teachers to work in turnover regions instead of keeping them in certain other working regions.
How do prospective elementary school teachers evaluate practices in the elective museum education course?: A case study
Authors: Şekerci̇ Hanifi , Yılmaz Fatih
Published: July 2022

Museum education course has been made available as a course of professional knowledge in faculties of education since 2018 so that prospective teachers can use museums as learning environments and so that they can plan and do learning activities in those places. This paper aims to analyse prospective elementary school teachers' views on the elective museum education course. The study was designed as a case study one of the qualitative research designs. The study group was formed in convenience sampling method. 27 prospective elementary school teachers were included in the study. The research data were collected through the participants' diaries, open-ended survey questions and focal group interviews; and the data were analysed in the descriptive analysis technique. The research results demonstrated that the prospective teachers developed positive perspectives on museums after taking the museum education course. They thought that the course had inculcated in them personal skills and pedagogical skills. Besides, they also stated that they could benefit from museum education activities in creating effective learning environments in the life of teaching.
Morphometric parameters of the distal end of the femur and their influence on the knee joint
Authors: Valčić Vanja , Jakovljević Maša , Varda Jovan , Mališ Miloš
Published: July 2022

Introduction: The femur is a long pair of bones and it consists of the proximal, distal end and body. The distal end carries the medial and lateral condyle (condylus medialis et lateralis), the intercondylar fossa and line (linea et fossa intercondylaris), and together with the patella (patella) and tibia (tibia) forms the knee joint. This study considers the effects of certain parameters on the femurs on the knee joint, and in addition to the fact that anthropometrically important parameters also represent important clinical indications during operations on the knee joint, that can become necessary due to the consequences of various diseases or environmental factors. Aim: Study of morphometric parameters of the distal end of the femur which are of exceptional importance in orthopedic surgery of the hip joint when planning osteocorrective interventions. Material and methods: At the Institute for Anatomy "Niko Miljanić" in Belgrade in 2020, a number of 47 femurs were measured, out of which 22 were right and 25 were left. Shaft length, lateral distal femoral angle (LDFA), mechanical lateral distal femoral angle (mLDFA) were measured, and for all measurements an orthopedic digital goniometer accurate to two decimal places was used. Results: A total of 47 femurs with an average shaft length of 40.0 ± 2.69 were processed. The shortest specimen was 34.8 cm while the longest was 45.7 cm. The mean LDFA was 81.36 ± 2.95 degrees, the minimum was 81.8 degrees while the maximum was 89.9 degrees. The average mLDFA was 87.69 ± 2.99 degrees, while the maximum and minimum were 94.6 and 81.8 degrees, respectively. Conclusion: Thirteen measured femurs fell under the definition of either genu varum or genu valgum. Four right and three left femurs are defined as varum, while two right and four left are defined as valgum. Additional analysis is necessary to determine the clinical implications of these parameters.
Prophylaxis and management of chemotherapy-induced febrile neutropenia: The role of myeloid growth factors
Authors: Dimitrijević Jelena , Stojanović Marko
Published: July 2022

Febrile neutropenia is a serious chemotherapy-related adverse event that can lead to complications and death and it could be a significant burden on the organization of the health care system. The risk for febrile neutropenia is determined by chemotherapy-induced myelosuppression and the presence of patient-related risk factors. In the literature, various patient-related risk factors are taken into consideration. It was suggested that the patient age is the one of the most important ones. If the estimated risk for the febrile neutropenia is high, prophylactic use of myeloid growth factors (granulocyte colony-stimulating factor and granulocyte-macrophage colony-stimulating factor) is recommended. In patients with solid tumors and lymphomas it was shown that the prophylactic use of myeloid growth factors significantly reduces the incidence of febrile neutropenia, early mortality during chemotherapy and infection-induced mortality. In patients who develop febrile neutropenia, there is less evidence for the therapeutic use of myeloid growth factors compared to prophylactic use, although there is a clear benefit in reducing the time to neutrophil count recovery. There is a clear benefit for hospitalized patients, also, in reducing duration of hospitalization. In patients with febrile neutropenia who have not been previously treated with prophylactic myeloid factors, assessment of risk factors for the complications is advised. In patients with high-risk febrile neutropenia therapeutic use of growth should be considered.
Assaying of structural parts of hybrid ZP677 grain by IC method disordered Total reflection
Authors: Radenović Čedomir , Bajuk-Bogdanović Danica , Radosavljević Milica , Delić Nenad , Popović Aleksandar , Sečanski Mile , Crevar Miloš
Published: July 2022

In this paper, the grain and structural parts of the grain of maize hybrid ZP 677 were studied, using Infrared Spectroscopy - Attenuated Total Reflectance (ATR). The ATR spectra of grain, endosperm, pericarp and germ of maize hybrid are characterized by a number of bands, band intensity, band kinetics and band location distribution in the wavelength range 400 cm-1 to 4000 cm-1. These parameters were specifically tested for both, the grain and the endosperm, pericarp and germ. Spectral bands that are very high and high intensity usually range from 3 to 5, characterized by different intensity, kinetic forms, as well as by the distribution of origin in the wavelength range. These spectral bands enable the identification of the following organic compounds: proteins, carotenoids, ethers, cellulose, lipids, carboxylic acids, amino acids, protein amides, alkanes, sugars, carbohydrates, ketones, alcohols, phenols, aldehydes and amines. Spectral bands of grains, endosperm, pericarp and germs that are low and very low intensity are also characterized by the number of bands, low bandwidth, distribution of the place of origin, and especially by the oscillation frequency of valence bonds of functional groups of organic molecules. Spectral bands that are low and very low intensity enable the identification of organic molecules, compounds and their fragments, as well as the identification of various forms of excited states of molecular structures and excited states of valence bonds of organic molecules. The excited state of molecular structures and the excited state of valence bonds of functional groups of organic molecules are manifested in various forms of oscillatory motion. Examples of functional groups of organic molecules in which all the mentioned excited states of molecular structures and excited states of valence bonds occur are alcohols, amines, alkynes, ketones, alkenes, ester, lipids, carbonyl group (ester), amides, nitrogen-hydrogen group, (NH), primary amines, carboxylic acids, amides, acid chlorides, nitrites, amides, carbonyl group (amide), aliphatic carbon-hydrogen bond and aldehydes.
Properties of maize hybrid grain for utilization in wet milling
Authors: Nikolić Valentina , Milašinović-Šermešić Marija , Radosavljević Milica , Simić Marijana , Žilić Slađana
Published: July 2022

A grain of eight selected hybrids from the Maize Research Institute Zemun Polje was used as the subject of this study. The kernel structure, physical properties and chemical composition of the grain and starch (amylose content) were analyzed before the laboratory wet milling process for starch extraction. The in vitro enzymatic digestibility of the isolated starch was also determined. The wet milling properties were later correlated to the physicochemical characteristics of the grain. The results showed that hybrid ZP 677 had the highest starch yield, followed by hybrid ZP 704wx, while the highest starch recovery was observed for hybrid ZP 341. The highest bran yield (10.52%) was obtained by hybrid ZP 434, and the highest germ yield (8.86%) by hybrid ZP 172/8. The correlation analysis showed that starch yield was positively correlated to 1000-kernel weight and crude fiber content, while oil content negatively influenced starch extraction and yield. The starch digestibility was negatively correlated to the amylose content. These findings can be useful for the starch processing industry as well as in the production of ethanol and alcoholic drinks.
Technology for manufacturing of shaper milling cutters by 3+2 grinding proces on horizontal CNC milling center
Authors: Milutinović Milan , Vasilić Goran , Živanović Saša , Kokotović Branko , Slavković Nikola
Published: July 2022

The paper presents the technology of making brazed shaper milling cutters and with special reference to 5-axis grinding process (making of profile blades) on CNC grinding machine tool. Based on the analysis of the kinematics of the 5-axis grinding process, a new concept of profile milling tool production by a 3+2 axis grinding process on horizontal milling center was established. By Applying new concept, one tooth of profile tool was machined by grinding process. By obtained results, new approach for manufacturing of profile milling tools was verified.