bluuebunny/crossref_metadata_2025 huggingface dataset:
Dancing in the Danube Gorge: Geography, dance, and interethnic perspectives
Authors: Rakočević Selena
Published: June 2021

This paper will look at dance practices of Romanian and Serbian villagers along the Danube Gorge which historically functioned as a natural and political boundary. Opportunities for dancing in all villages in the Gorge are still very common and frequented especially during the summer time. Based on my field research, carried out since 2011, the paper examines the contemporary dance practice of this region. My methodological orientation will be based on the ethnochoreological investigation of diverse repertoires, but also diverse dance structures as "predictable" dance texts designated during previous times as Romanian or Serbian, which are interpolated by the villagers. The notion of geographical place considered in the sense of a distinct "culture area", which, according to Bruno Nettl is grounded in the history of ethnomusicology, but also ethnochoreology, will be challenged by applying Martin Stokes' concept of (geographical) place as a social construction which involves notions of difference and social boundary. The following question will be raised: In what way does contemporary village dancing in the Danube Gorge correspond to the idea of establishing Romanian society as a part of the New Europe? In what way does the current (re)positioning of this historically and geographically distinct territory influence its contemporary dance practice? How is the concept of the ethnic dance (Romanian and Serbian) recognized both by insiders (villagers) and outsiders (the State institutions and scholars) and does this correspond to the new social and political context of contemporary Romanian society?
Woman and/or water: Who is Svetlana Savić's trapped?
Authors: Sabo Adriana
Published: June 2021

Svetlana Savić was given the "Mokranjac" award for her composition titled Trapped (2014), written for female choir and electronics. Originally composed for a multimedia project realized by the "Collegium Musicum" choir titled Water, Savić's piece was inspired by water trapped inside pipes, a subject that enabled her to realize the musical flow using a variety of murmurs and noises, as well as to expand upon the numerous possibilities offered by the contrast between a female voice and electronically produced sounds. The musical language of Trapped can thus be understood as the result of research into the possibilities offered by the sonic traits of the musical material, the relationship between consonant and dissonant intervals - mostly seconds and thirds - and as a very compact, yet incredibly expressive musical manifestation of feelings of captivity and fear of drowning.
The Sumatraist secret of count Sava Vladislavić's great dreaming: The anamorphosic aim of theatrical doubling, the ex-centred observer, and the regenerative power of collective memory
Authors: Medić Milena
Published: June 2021

In her discussion of Melanholični snovi grofa Save Vladislavića (The Melancholy Dreams of Count Sava Vladislavić), an opera by Serbian composer Svetislav Božić, the author begins by discussing the composer's operatic allusion to anamorphosis, an architecture and painting technique, in both of its application modes (the perspectival and the catoptric). The trans-media and temporal conversion of this visual tool into the aspect of staged drama is notable in the theatrical procedure of reflective doublings of roles/ characters and production of visual syntactic parallelisms, which deepen semantic relations between otherwise unrelated personages and events from various but important layers of Serbian cultural and intellectual history (Nemanjić, Nikola Tesla, Count Sava Vladislavić). The logic of unclose similarity and borderline contact relates anamorphosis to a special way of ordering the imagery of dreams, whereby the symbolic interiority of a hidden image, the mysterious pattern of sense, may be penetrated only by finding the correct viewing angle. In its longing for the obscure, anamorphosic focalization counts on the ex-centred spectator's capacity to approximate the remote and relate the unrelated. In that sense, shaping the Count's great dreaming by means of a polyphony of oneiric subjects and states and a heteroglossia of remote contexts and other people's stories and lyrical contemplations suggests Sumatraism as a chronotope, as the idea that there is universal connectedness and harmony in the world. The idea of Sumatraist connections informs both the understanding of the opera libretto's inter-textuality (along the lines of the quotation-collage form of the cento, the literary genre) and the arc of association that the composer draws in harmonic-motivic terms as well, in order to produce a special nexus of music-dramatic narration and presentation. In that Sumatraist inter-textual nexus, other people's stories and lyrical contemplations, qua manifestations of a collective consciousness, are deepened by means of a collectively unconscious (archetypal) perspective of a mythical, allegorical, and phantasmagorical dance-pantomime procession, as yet another oneiric form, whose typical Dionysian sequence, intoxicatio-phalophoria-sparagmos, affirms not only the theatrical model of anamorphosic doubling and Sumatraist connections, but also a unique theme in this operatic narrative - transcending sacrifice, tribulation, and death in a foreign land by means of the regenerative power of collective (historical and cultural) memory.
A piece of music in the dynamics of the relationship between artefact and fact
Authors: Veselinović-Hofman Mirjana
Published: June 2021

In this paper, I shall consider the ontological duality and functional interchangeability of artefact and fact in the field of music, proceeding from the assumption that every artefact is at the same time a fact, yet every fact is not necessarily an artefact. Thereby, I understand the fact in the sense of everything that exists in reality, and bears an enduring identity as an object, phenomenon or information. By artefact, I understand a material product of human activity. Such a starting point, enables, in each piece of music, the multifaceted consideration of the dynamics in the relationship between artefact and fact. On this occasion, I shall exemplify this relationship on Svetlana Savić's compositions The Sonnets for female voice, violoncello, piano and electronics (2012), from three characteristic aspects: 1) their ontology in the score and at the phenomenal level; 2) the ensemble, presenting a specific ontological unity of artefact and fact, the unity for which the compositions are created; and 3) environmental sounds as a fact in the shaping of compositions as artefact. All three aspects of consideration are expected to point to the complexity of the relationship between artefact and fact, to their particular, individual profiling, but also their mutual resignification in a piece of music, owing to the nature and the kind of the piece's relevant 'protagonists'.
The Symphony Orchestra and Choir of the Faculty of Music in Belgrade
Authors: Marinković Sonja
Published: June 2021

The article sheds light on the work of the Mixed Choir and Symphony Orchestra of the Faculty of Music in Belgrade, two representative ensembles that have made, over a number of decades, an invaluable contribution to the Faculty's standing in the city, nationally, as well as abroad, always taking an active part on the music scene. The aim is to show that their activities have combined pedagogical and artistic work and that they are, in an essential way, an indicator of the institution's achievements.
Parenting the piano: Miroslav Miša Savić's 'St. Lazarus Waltz'
Authors: Medić Ivana
Published: June 2021

This article deals with a work by a contemporary Serbian composer Miroslav Miša Savić (b. 1954): St. Lazarus Waltz for one or two grand pianos, with or without children's toy pianos. Since St. Lazarus is a children's holiday, the composer's idea was to depict children by toy pianos, while the grand pianos are 'parents'. The waltz exists in several versions: from the first one, where the children pianos are quite small and their musical parts very restricted, to the version for two 'adult' pianos, which describes the moment in life when children have grown up and left their parental home. Aside from exploring these musical 'family ties', Savić implements a simple yet ingenious constructive principle in all versions of this waltz. The structure of the piece is based on the exploitation of the system of equal temperament and on the Fibonacci row, and this frame is filled with several layers of musical references, including: Johann Sebastian Bach and other composers who wrote 'well-tempered' piano music; repetitive/processual minimalism, a style that Savić and his peers brought into Serbian music, but have since evolved in different directions; the Serbian tradition of romantic salon piano pieces; finally, the Orthodox tradition, but referenced in a way very different from the 'NEO-Orthodox' trend that has been present in Serbian art music since the late 1980s.
Management of transition processes in the function of sustainable development
Authors: Avakumović Jelena , Tešić Rade , Karić Danijela
Published: June 2021

The modern world is at a new historical turning point (transition from industrial to post-industrial or information society). Today, this is most often referred to as a transitional or transitional period. However, this process is often reduced as the transition of the planned economies of the former socialist countries to market economies and the transition of their authoritarian social systems to democratic societies. The modern transitional period represents the period of the realization of the third scientific and technological revolution (biotechnology, robotics, informatics, new materials, conquest of space and sea for production purposes), which changes both production forces and production relations. Namely, all this leads to a new organization of production, a new type and carrier of production management, changes the importance and role of ownership, factors of production, the nature of distribution, and thus suggests the creation of a new type of social relations. The process of socialization, humanization, new integration is being realized, new technologies are being developed, but also a new quality of life. It is reflected in the transformation of the capitalist and real-socialist mode of production into a new mode of production. We call this transitional stage the modern transitional or transitional period.
Development and education of company managers
Authors: Milojević Irena , Jovanović Duško , Matić Iva
Published: June 2021

Proper selection of persons to perform managerial work (in various forms of ownership) is an important initial step, and after proper selection, one should continuously work with persons who will perform that work, monitor them, guide and work on their career development. When choosing a leader, one must take into account the knowledge he should possess, desirable traits (intellectual, voluntary and emotional personality traits), attitudes, the degree of authority he enjoys and the nature of functioning -the group he works with to solve problems. Important personality traits, which should be taken into account when choosing a person for managers are: temperament, interests, character and abilities, and they can be determined to some extent on the basis of certain qualitative and quantitative indicators. Numerous knowledge from practice, although various sciences and scientific disciplines provide a good basis for high efficiency and effectiveness, show that there are many managerial (managerial) problems, and there are few good managers. The aim of this paper is to provide certain theoretical knowledge that provides a good basis for improving operational practices aimed at properly identifying candidates for managers, their proper education and training throughout their working lives and career development.
The coniferous anthropogenic and natural forests decline in Serbia driven by different abiotic and biotic factors
Authors: Tabaković-Tošić Mara , Milenković Ivan , Radulović Zlatan
Published: June 2021

The epidemic dieback of conifer forest, as the modern phenomenon, is present in the central part of the Republic of Serbia as well as in other countries of Southeastern Europe. Affected forest area increased in the period 2011-2014. It was most intense in forest stands dominated by spruce and silver fir, and about eight-fold less intense in Austrian and Scots pine. Change in climate conditions is supposed to be one of the main possible causes of coniferous forests dieback. The climate change initiated the increased activity of fungi Armillaria spp. and Heterobasidion annosum which led to the decay of individual trees and spreading in groups of trees. In pine and spruce monocultures afforested within the broadleaved habitats, massive dieback of trees was also a consequence of these two fungi. Spatial and temporal scales of insect outbreaks increase due to dry summers and mild winters in high elevations. In the last decade, in the coniferous plantation and natural forests in the central part of Serbia, intense outbreaks of bark beetles on spruce and silver fir were recorded. Spruce forests were heavily attacked by Ips typographus and Pityogenes chalcographus, and Austrian and Scots pine forests have been mostly affected by forest fires followed by outbreaks of Ips sexdentatus and other bark beetles. Insufficient silvicultural measures and inappropriate forest management in silver fir forests contribute to mistletoe infestations.
Variability of epithelial cells in the resin duct of Douglas-fir needles
Authors: Lavadinović Vera , Rakonjac Ljubinko , Lavadinović Vukan
Published: June 2021

The research on the interactions between the genetic potential of introduced provenances and the environmental features of the locations in which the plantations were established was carried out in Douglas-fir plantations in Serbia. The twoway ANOVA was conducted in order to study the effects of the site conditions in the localities of Douglas-fir provenance tests in Serbia on the anatomical properties of needles. These analyses look into the effects of two factors (locality and provenance) on the number of epithelial cells in the resin duct of Douglas-fir needles.
Potentials of the evaluation of the wood quality in living trees by using semi-and non-destructive methods in order to reduce wood-processing costs
Authors: Živanović Ivana , Poduška Zoran , Rakonjac Ljubinko , Jovanović Filip
Published: June 2021

Being a natural, ecological and renewable resource, wood is increasingly replacing artificial and toxic materials in the manufacture of various types of packaging and other products; thus, its proper and economically justified use has become necessary. The best utilization of wood raw materials has been sought both in practice and theory, which led to the development of a number of non-destructive and semi-destructive methods for the wood quality assessments in various stages of wood exploitation. In this paper, two instruments for the inspection of the internal condition of standing trees were analyzed. The resistograph was designed for the detection of internal defects. In addition to assessing the condition of living trees of different species, the instrument is used to assess the wood density in various materials. The observed resistance during drilling is proportional to the change in the wood density or the relative mass of the element analyzed. The results of drilling in different spots or directions, through the cross-section and along the element, can be used to map the properties of the element. The fractometer is a device designed to measure the strength and other mechanical properties of on a core sample extracted by using an increment borer from a certain part of the tree or branch examined. The fractometer can determine the maximum fracture force and bending and pressure strength of wood. It is also possible to identify the stage of decay. Due to its heterogeneous structure and anisotropy, the wood compressive and bending strengths differ between different anatomical directions even within a single species. The results of previous research in the literature indicate that there is a significant positive correlation between the radial bending strength and the longitudinal compressive strength of wood. This actualizes the need for the use of different tree species in construction, depending on the load that the wood element will be exposed to. These devices provide high precision and quality in measurement and can achieve a good correlation between the measured values and the mechanical properties of wood. This way, science and practice could be provided by significant data on the properties and quality of wood, while its consumption is minimized.
Variation of leaf water potential and leaf gas exchange parameters of seven Silver linden (Tilia tomentosa Moench) genotypes in urban environment
Authors: Kesić Lazar , Vuksanović Vanja , Karaklić Velisav , Vaštag Erna
Published: June 2021

Differences between genotypes are considered to be the most important requisite for a resilient urban forest. Analyses of physiological traits, such as leaf water potential and leaf gas exchange could provide useful insight into the capacity of different species and genotypes to grow in harsh urban environments. In the present study, a variation of midday (Psmd) and predawn (Pspd) leaf water potential, net photosynthesis (A), rate of transpiration (E), stomatal conductance (gs), and intercellular CO2 concentration (Ci) of seven Silver linden genotypes (Tilia tomentosa Moench), planted in the urban environment in Novi Sad, were examined. Analysis of variance and LSD tests were used to show differences between studied silver linden genotypes. The results showed significant differences for all observed leaf gas exchange parameters (A, E, gs, Ci, Pspd and Psmd) between genotypes. The results indicate better physiological performances of genotypes T3, in comparison to other observed genotypes under the prevailing environmental condition of the studied site in the urban environment.
Recent records of the cypress jewel beetle: Lamprodila (Palmar) festiva (Linnaeus, 1767) (Coleoptera: Buprestidae) in Serbia
Authors: Kereši Tatjana
Published: June 2021

Lamprodila (Palmar) festiva (Linnaeus, 1767), cypress jewel beetle is a species widespread in the Mediterranean, but has been rapidly expanding North and East over the last decade. It is harmful to plants of the genus Juniperus, Chamaecyparis, Cupressus, Platycladus and Thuja. It attacks both, the healthy and stressed plants and destroys them within 2-3 years. There is lack of information about this buprestid in Serbia, except that heavy damage from it was registered in 2014, without specifying localities of the damage. This work provides exact geographical records where species was noticed in Serbia (near Belgrade and Sremski Karlovci) during past two years. Considering the great damage it can cause, much more attention should be paid in the future to monitoring the occurrence and abundance of this species, particularly in the nurseries and new planted hedges.
Phytocenological and edaphic characteristics of acidophilus beech forest with mosses (Musco - Fagetum moesiacae B. Jov. 1976) in the area of Jelova gora
Authors: Karaklić Velisav , Cvjetićanin Rade , Košanin Olivera , Pekeč Saša , Simić Arsenije
Published: June 2021

The aim of this research to show floristic and ecological characteristics of acidophilus beach forest with mosses (Musco - Fagetum moesiacae B. Jov. 1976) in the area of Jelova gora. The studied type of soil in this forest community was dystric cambisol, which finds on sericite schist. Only ten plant species was recorded in this plant community (eight vascular plants and two species of mosses - Polytrichum commune and Leucobryum glaucum), so we can conclude that this plant community is very floristic poor. On bases floristic structure, spectrum of life forms and ekological spectrum are done. The phanerophytes have the highest share in community. The results of the study showed that investigated forest community was mesophilic, acidophilic to neutrofilic, mesotrophic, sciophilic to sub-sciophilic and mesothermophilic.
Volatile organic compounds of Tilia cordata Mill. from Serbia, in terms of ecosystem services
Authors: Zorić Martina , Kostić Saša , Kebert Marko , Kladar Nebojša , Božin Biljana , Orlović Saša
Published: June 2021

It is considered that different plant organic compounds, known as phytoncides are creditable for positive effects of Forest therapy on human health. Ongoing pandemic has also put these compounds in research focus considering potential use for novel corona virus treatment. This research was conducted in order to examine the potential of Tilia cordata Mill. considering volatile organic compounds (VOCs) content for the use in Forest therapy. In order to determine qualitative and quantitative content of phytoncides, as well the variability among genotypes growing in the same environmental conditions, leaf samples from genotypes of T. cordata were collected from the Fruška gora (Serbia) during 2019. VOCs determined in fresh herbal material were analyzed by HeadspaceGC/MS and VOCs determined in essential oil were obtained by GC/MS. The results showed the presence of 17 different phytoncides (monoterpene hydrocarbons, oxygenated monoterpenes, sesquiterpene hydrocarbons, oxygenated sesquiterpenes, aliphatic compounds and diterpenes) in all tested genotypes. According to the mean values of the obtained results, the most abundant classes of phytoncides among the examined genotypes were monoterpene hydrocarbons (87.05), followed by aliphatic compounds (36.59) and oxygenated sesquiterpenes (34.60). The highest coefficient of variation (CV) among phytoncide content in tested T. cordata genotypes has been observed within oxygenated monoterpenes (43.12%), sesquiterpene hydrocarbons (28.18%), and diterpenes (27.04%). Some individual monoterpene hydrocarbons, such as o-cymene (19.92%) and a-pinene (17.40%) had the highest CV in terms of its presence in analyzed genotypes. In addition, the principal component analysis (PCA) showed more notable clustering within the VOCs determined in essential oil in comparison to VOCs determined in fresh herbal material. Considering the phytoncide content detected in T. cordata leaves, this species has high potential for the use in human health improvement within Forest therapy.
The impact of Internet distribution systems on the promotion, sales, and quality of hotel accommodation (with 4 and 5 stars in the City of Niš)
Authors: Stanković Tamara , Čerović Slobodan
Published: June 2021

This work is a theoretical and empirical overview of the influence of IDS and social networks on the promotion, sales, and quality of hotel accommodation. The work outlines a theoretical-academic presentation and includes a case study, which was carried out through research in 4-star and 5-star hotels. The research identifies the usage and influence of IDS on promotion, sales, and quality of hotel accommodation, the key advantages of cooperation and areas where it is lacking, as well as the usage and importance of social networks in promotion and sales. The terms "IDS" and "social networks in hotel businesses", their definition and importance are presented in the theoretical part of this work. The focal point of this work is to prove the importance of applying IDS and social networks in promotion, sales, and quality of services, in addition to showing the advantages of cooperation and areas where it is lacking. Furthermore, this work emphasizes the importance of staying up to date and in agreement with the latest innovations and their usage in the hotel industry, as well as the significance of adjusting the offer and services to the market demand.
Reconstituição das Esculturas Conhecidas como “ Anjos da Praça” por Meio das Técnicas de Fotogrametria e Prototipagem em Escala Reduzida
Authors: Ferreira Cristiano Corrêa , Pozzer Roberto
Published: June 2021

Este trabalho tem por objetivo descrever duas técnicas utilizadas para reconstituir duas esculturas utilizadas em dois chafarizes de uma praça da cidade de Bagé-RS. Essa iniciativa visa também alertar a comunidade da cidade e região sobre a importância de proteger essas e outras esculturas antigas. Nos dias atuais, as ferramentas de modelagem tridimensional são extremamente úteis porque facilitam a reprodução de objetos de significativa complexidade que, dificilmente, conseguiríamos representar em softwares CAD de desenho convencionais. Sendo assim, estruturou-se uma metodologia para modelar em 3D (fotogrametria) e imprimir (prototipagem rápida), na escala reduzida e com material polimérico, as esculturas. Ao final dessa ação, detectou-se que será possível modelar mais estatuetas e bustos de outras obras que estão nas praças e locais públicos da cidade porque, da forma como estão hoje, esses elementos correm o risco de destruição em função dos períodos de intempéries, degradação de vândalos e depredadores, entre outros.
Ergonomia Cognitiva e a interação com os objetos
Authors: Silva Keity Lílian Barbosa Martins , Campos Lívia Flávia de Albuquerque , Fernandes Fabiane Rodrigues
Published: June 2021

A ergonomia cognitiva é voltada para o estudo dos processos mentais como atenção, percepção, memória, raciocínio e resposta motora relacionados à interação das pessoas com os elementos de um sistema (FALZON, 2007; ROGERS et al., 2013). E avalia também as emoções e os afetos, pois estes estão presentes em todos os processos cognitivos (NORMAN 2006, 2008; DAMÁSIO, 2012; PIAJET, 2013).  O objetivo deste trabalho é discorrer sobre a ergonomia cognitiva e as interações das pessoas com os objetos por um viés interdisciplinar, destacando-se os principais componentes inseridos nesse processo, a fim de contribuir com o entendimento das questões intrínsecas nas relações das pessoas com os produtos, por meio de uma compreensão holística sobre como os indivíduos percebem os artefatos e como são afetados por eles.
Buffalo in Borneo, Sarawak: A Review of the Current Status of the Indigenous Buffalo Industry
Authors: Khalex Abang-Harizt , Syed-Hussain Sharifah Salmah , Ramanoon Siti Zubaidah , Sarbini Shahrul Razid , Hassan Mohammad Nasir , Nating William Rovina , Asut Robine , Abit Lirong Yu , Kamaludeen Juriah
Published: June 2021

The Malaysian water buffalo, Bubalus bubalis, has traditionally been important livestock for the local people of Sarawak. Buffalo, other ruminants, and non-ruminants are essential for the livestock industry as they supply the largest source of protein for the entire nation. Cattle provide the largest production in the livestock industry at 0.2%, followed by other ruminants, including goats (0.1%), sheep (0.04%) and buffalo (0.03%). Water buffalo, or 'kerbau sawah' as it is locally known, is an overlooked animal compared to other livestock. Amidst the growing demand for beef within the domestic consumer market, the buffalo population in Sarawak has risen over the past 5 years from 5,396 to 6,205 heads in 2019. However, the self-sufficiency level (SSL) of cattle and buffalo beef has dropped from 26% in 2013 to 21.6% in 2019 despite the rising demand for local produce. Malaysia continues to import frozen buffalo beef from India and live bovine from other countries in order to meet domestic demands and support the growth of the local buffalo industry. Due to this, the Department of Veterinary Services (DVS) Sarawak introduced a buffalo yard program ('Natad Kerbau') to assist the state smallholder farmers in managing their buffaloes better. This paper focuses on describing the current status of buffalo production in Sarawak, its important functions (including provision for food security) and future prospects of B. bubalis in the livestock industry of Malaysia and Sarawak in particular.
Virtually Standing Up or Standing By? Correlates of Enacting Social Control Online
Authors: Costello Matthew , Hawdon James , Cross Amanda
Published: June 2021

Research has consistently established the robustness of the bystander effect, or the tendency of individuals to not intervene on behalf of others in emergency situations. This study examines the bystander effect in an online setting, focusing on factors that lead individuals to intervene, and therefore enact informal social control, on behalf of others who are being targeted by hate material. To address this question, we use an online survey (N=647) of youth and young adults recruited from a demographically balanced sample of Americans. Results demonstrate that the enactment of social control is positively affected by the existence of strong offline and online social bonds, collective efficacy, prior victimization, self-esteem, and an aversion for the hate material in question. Additionally, the amount of time that individuals spend online affects their likelihood of intervention. These findings provide important insights into the processes that underlie informal social control and begin to bridge the gap in knowledge between social control in the physical and virtual realms.
Corruption Culture on Managing Natural Resources: The Case Political Crime “Papa asking Stock of PT. Freeport Indonesia”
Authors: Riyadi Bambang Slamet , Mustofa Muhammad
Published: June 2021

This research is the result criminology study on corruption culture of abusing the office and power involved the political elite and state officials in case of 'papa asking the stock’ related to the extension of mining contract of PT. Freeport Indonesia. This research is based on the concept of corruption culture, criminological theories and views of some economic and political observers. The research findings revealed the existence of corruption culture on political crime agreement scenario in case of “Papa Asking The Stock” that are provoking the extension of concentrates export license, diversion of issues and political lobbying to suppress stock divestment and smelter development. The nature of social structures and socio-cultural situations, responses to social situations and relationships with the perpetrators affecting individuals and groups crime behavior. A previous social culture behavior encourages learning in behavior at the society afterwards. State creates the crime laws to protect and maintain its power. The perpetrators rationalize the criminal act on securing and save their interests. Rationalization of corruption culture on the case of ‘papa asking the stocks’ bring forth the law de-penalization mitigating and generating a verdict not guilty to the perpetrators. Corruption culture identical with crime organized state or state crimes against democracy
The Challenges of Environmental Law Enforcement to Implement SDGs in Indonesia
Authors: Salim Agus , Palullungan Liberthin
Published: June 2021

The 1945 Constitution of the Republic of Indonesia mandates that a good and healthy environment is a human right and constitutional right for every Indonesian citizen. Therefore, the state, government, and all stakeholders must protect and manage the environment to implement sustainable development. The Indonesian environment can remain a source and support for the Indonesian people; this is in line with implementing the SDGs. The study aims to analyze environmental law enforcement efforts in Indonesia towards SDGs implementation. The research method used a normative approach, with statutory and a conceptual process. The data collect the use of secondary data with literature and statue approach. The study results showed that environmental law enforcement in Indonesia (Number 32/2009) concerning Environmental Protection and Management is preventive and repressive. Three legal instruments in environmental law enforcement are recognized administrative, civil, and criminal law. Environmental law enforcement and the implementation of SDGs in Indonesia are connected. The government implements preventive and repressive law enforcement as regulated in Law by granting expansive powers to local governments to provide protection and environmental management in their respective regions so that the environment remains sustainable. The regulation is in line with the Goals of 6, 7, 12, 13, 14, and 15 of the SDGs directly related to environmental sustainability.
Bioactive Compounds of Acai (Euterpe oleracea) and the Effect of their Consumption on Oxidative Stress Markers
Authors: Guzmán Romel , Aponte Ricardo , Lares Mary
Published: June 2021

Açaí fruit (Euterpe oleracea Martius) is highly perishable, so it sought to apply conservation techniques that make its commercialization more bearable such as dehydration by the tray. This thermal technique that significantly inactivates harmful enzymes and microorganisms prolongs their shelf life but has the disadvantage that it decreases the proportion of bioactive components and its antioxidant power. The present work aims to estimate the content and antioxidant activity of the bioactive compounds of açaí powder supplied in hydroxypropyl methylcellulose (HPMC) vegetable capsules. For this purpose, total polyphenols were determined by the Folin-Ciocalteau test, total anthocyanin’s by the differential pH test, and the antioxidant capacity in vitro DPPH method (using Trolox and Vitamin C equivalent). Also, the effect of consumption of four daily capsules on a healthy population (10 people) between the ages of 33-65 years old evaluated through a 10-day intervention study in which the following biomarkers in blood assessed: glycemia, triglycerides, total cholesterol, HDL, LDL, and 8-isoprostane. The açaí powder showed a total polyphenol content of 962.7±22.2 mg EAG/100g, total anthocyanin’s up to 938.5±19.1 mg C3GE/100g, the antioxidant capacity of 643±24.32 µmol TE/100g and 14.07±0.45 g VCE/100g. In the intervention study, no significant differences were observed between before and after the different biochemical markers except for 8-isoprostane, suggesting that the consumption of dehydrated açaí caused effects benefices in the population tested.
Meta-Analysis of Incidence Rate Data in the Presence of Zero-Event and Single-Arm Studies
Authors: Piaget-Rossel Romain , Taffé Patrick
Published: June 2021

Unlike the classical two-stageDerSimonian and Laird meta-analysis method, the one-stage random-effectsPoisson and Negative-binomial models have the great advantage of including the information contained in studies reporting zero event in one or both arms and in studies with one missing arm. Since the Negative-binomial distribution relaxes the assumption of equi-dispersion made by the Poisson, it should perform better when data exhibit over-dispersion. However, the superiority of the Negative-binomial model with rare events and single-arm studies is unclear and needs to be investigated. Moreover, to the best of our knowledge, this model has never been investigatedin the context of a meta-analysis of incidence rate data with heterogeneous intervention effect. Therefore, we assessed the performance of the univariate and bivariate random-effects Poison and Negative-binomial models using simulations calibrated on a real dataset from a study onthe surgical management of phyllodes tumors. Results suggested that the bivariate random-effects Negative-binomial model should be favored for the meta-analysis of incidence rate data exhibiting over-dispersion, evenin the presence ofzero-event and single-arm studies.
An Impact of the Particle Size Distribution on CP Degree at the Mechanism of Shear-Induced Diffusion in Cross-Flow Microfiltration
Authors: Agashichev Sergey P.
Published: June 2021

Model for concentration profile at the mechanism of shear- induced back migration has been proposed. The model is based on the following assumptions: (1) Flow is assumed to be isothermal, incompressible, fully developed and steady– state. The model implies the position dependence of transverse velocity and shear rate; (2) Dispersed phase consists of rigid bodies characterized by identity variables and particle- size distribution; (3) Back migration being non- diffusive in nature is characterized by certain kinetic behavior. The migration of particle is determined by shear- induced force (moving force) and drag forces (resistance force); (4) The migration of particles was assumed to occur within the zone referred to as shear-diffusion migration zone. Migration zone ranges from membrane to its threshold value at the upper boundary where the state of pseudo-equilibrium takes place; Vector sum of the forces acting the particle (shear and drag forces) ranges from its maximum value at the surface of membrane to zero at the upper boundary of migration zone where the state of pseudo-equilibrium takes place; (5) The driving force being degree of deviation from the state of equilibrium was expressed as the difference between local shear rate and its threshold value at the upper boundary of migration zone; Transport mechanisms such as Brownian diffusion, inertial lift, interaction based on Van der Waals or electrostatic forces, combined effects of particle-particle and particle–membrane interactions are outside the scope of the model. The proposed model has the following possible implications: (A) It can be used for quantitative estimation of the probability of fouling caused by different fractions at existing hydrodynamic conditions; (B) The model allows analyzing the impact of hydrodynamic conditions (such as shear stress and transverse velocity) on the probability of fouling caused by certain dispersed fraction; (C) It allows estimation of the threshold value of the shear rate specific for the certain fraction that should be exceed in order to prevent accumulation of this fraction; (D) Proposed model permits analyzing the influence of shear rate at the surface of membrane on the transverse concentration distribution; (E) The model can be used for quantitative analysis of CP distribution of individual fraction while considering poly-disperse systems as soon as any fraction is characterized by its individual migrating behavior.
Effect of Operating Variables on DMFC Performance for the Synthesized Si-PWA/PVA Nanocomposite Membrane
Authors: Pandey Jay
Published: June 2021

Electrochemical Performance of DMFC was studied under the effect of various operating parameters like temperature, methanol concentration and relative humidity (RH) for the synthesized silica immobilized phosphotungstic acid-poly(vinyl alcohol) (Si-PWA/PVA) nanocomposite membrane (thickness 80-100 µm). The optimized 1.5 Si-PWA/PVA membrane showed good electrochemical properties (transport number: 0.92 and IEC: 0.90 meq/g) with excellent mechanical strength, thermal and chemical stability. Open circuit voltage (OCV) decay was significantly lower in comparison to Nafion-117. Maximum power density (45.7 mWcm-2) was obtained at 60oC cell temperature. DMFC performance exhibited better performance even at higher methanol concentration (2 M) demonstrating lower concentration over potential. The appreciable rise in the peak power density observed at higher relative humidity (90%) showed good water stability of the membrane. Performance of the DMFC with the synthesized composite membrane was comparable to the state of the art Nafion-117.
Parametric, Non-Parametric and Multivariate Analysis of Capital Structure During the Financial Crises in Jordanian Banks
Authors: Khasawneh Ahmad Y.
Published: June 2021

Motivations: This research seeks to analyze the determinants of capital structure of the banking sector in Jordan taking into consideration bank business model (Islamic versus Commercial bank). The research also sheds light on the financial crises of 2007/2008 and its impact on the financing decision in the banking sector.Novelty: Although the topic of capital structure's determinants is well studied in non-financial firms, very few studies considered the financial firms, namely banks. Since the nature of operations and capital components for banks are totally different this research comes to fill the gap in the banking literature.Methodology and Methods: The study uses multivariate regression techniques of panel data besides the parametric and non-parametric analysis. Three measurements of capital structure are considered: leverage ratio, long term debt ratio and short-term debt ratio, the explanatory variables are included in two sets, bank specific characteristics and economic characteristics.Data and Empirical Analysis: Balanced panel data set was formed for 27 Jordanian banks during the period of 2003-2015. Empirically, the findings suggest a variation of capital structure determinants based on the variable of measurement. However, the analysis confirms that bank's profitability and bank's risk are major components of the capital structure decision regardless of its measurement variable. In addition to these two variables, liquidity, growth and taxes are important variable in the short-term debt financing, and retained earnings is important to the long-term financing. Empirically proven that Jordanian banks' capital structure decision is affected by the global financial crisis 2007/2008 and by bank type. Jordanian banks might differ in size, but this doesn't affect their policies toward the capital structure. The empirical results are consistent with the pecking order theory that profitable firms prefer to use more of their internal sources of funds rather than debt financing.Policy Implications: Due to the importance of the capital structure decision for banks and non-banks firms and based on our finding, the policy makers in Jordan and may in other similar countries should pay attention to capital requirement regulations as the determinants of leverage among banks are different based on the business model whether commercial or Islamic.
Ratings of The Investment Projects of Arbitrary Durations: New Methodology
Authors: Brusov P.N. , Filatova T.V. , Orekhova N.P. , Kulik V.L. , Weil I.
Published: June 2021

In this paper we develop for the first time a new approach to ratings of the investment projects of arbitrary durations, which could be applied to investments of any area of economy and in particular to energy projects.The ratings of such energy projects, as "Turkish stream", "Nord stream-2", energy projects relating to clean, renewable and sustainable energy, as well as relating to pricing carbon emissions (McAleer et al., 2018a,b,c; 2019) could be done using developed here new rating methodologies. In our previous papers the new approach to the ratings of the longâ€“term investment projects has been developed (Filatova et al., 2018). The important features of that consideration are as following: 1) The incorporation of rating parameters (financial "ratios"), used in project rating and playing a major role in it, into modern longâ€“term investment models, 2) The adequate use of discounting of financial flows virtually not used in existing project rating methodologies. Here, for the first time, we incorporate the rating parameters (financial "ratios"), used in project rating, into modern investment models, describing the investment projects of arbitrary durations. This was much more difficult task then in case of the longâ€“term investment projects, considered by us in previous papers. We work within investment models, created by authors. One of them describes the effectiveness of investment project from perspective of equity capital owners, while other model describes the effectiveness of investment project from perspective of equity capital and debt capital owners. New approach allows use the powerful instruments of modern theory of capital cost and capital structure (BFO theory) (Brusov et al., 2015, 2018) and modern investment models, created by the authors and well tested in the real economy to evaluate investment project performance, including energy projects.In our calculations we use Excel technique in two aspects: 1) we calculate WACC at different values of equity costs k0, different values of debt costs kd and different values of leverage level L=D/S, using the famous BFO formula; 2) we calculate the dependences of NPV on coverage ratios as well as leverage ratios at different values of equity costs k0, different values of debt costs kd and different values of leverage level L.
Synthesis, Comparative Characterization and Photocatalytic Application of SnO2/MWCNT Nanocomposite Materials
Authors: Nemeth Z. , Pallai Z. , Reti B. , Balogh Z. , Berkesi O. , Baan K. , Erdohelyi A. , Horvath E. , Veréb G. , Dombi A. , Forró L. , Hernadi K.
Published: June 2021

Two different preparation methods were developed to cover successfully multi-walled carbon nanotubes (MWCNT) with tin-dioxide (SnO2) nanoparticles using SnCl2·2H2O as precursor under different solvent conditions. The applied mass ratios of the components were 1:4, 1:8, 1:16, 1:32 and 1:64, respectively. As-prepared tin-dioxide coverages were characterized by TEM, SEM, SEM-EDX, Raman microscopy, BET and X-ray diffraction techniques. Photocatalytic efficiencies of selected composites were investigated in a self-made photoreactor, equipped with UV-A fluorescence lamps. Photocatalytic degradation of phenol solution was followed by using HPLC. Observations revealed that using hydrothermal method we can easily control the layer of SnO2 nanoparticles on the surface of MWCNTs. Using various solvents SnO2 nanoparticles with different morphologies formed. The nanocomposites have low photocatalytic efficiencies under conditions used generally (when λ>300 nm).
Integrated Quantitative Business Network Planning: Towards a New Understanding of Supply Chain Management
Authors: Jahr Michael
Published: June 2021

In business management quantitative modelling is a core competency. It enables structuring various complex problems; reduce systems to their relevant elements and to make objective and clear decisions. This especially applies to production-distribution networks which are formed by multiple independent and globally active companies. Here, individual goals and collective tasks meet so that experienced-based knowledge is no longer satisfactory. A literature review showed that there is no satisfactory concept available for superior network and quantitative operational management in multi-tier business networks. Therefore, in this article we focus quantitative supply chain models as starting point for stipulations among independent network partners. First, we deduce the main elements of quantitative modelling for inter- and intra-organisational production-distribution planning. Thereby, we present an extension of the Two-Stage-Production-Distribution-Problem which can be used as starting point for iterative supply chain coordination. Based on a literature review we introduce a novel pivotal point supply chain management model. The approach induces ongoing alignment of the strategic, tactic and operative tasks. On each level of this hierarchical planning frame specific plans are computed for comparison and adjustment. The advantages of this approach can be found in the reliable objective basis for negotiations and the repeatable combined inter- and intra-organisational management.
A Neural Network Decision Support System for Analysing Markets
Authors: Hamed Fazlollahtabar Hamed , Mohseninejad Maryam
Published: June 2021

Today, markets are equipped with IT-based systems to facilitate the flow of information within markets and to provide useful information for producers and costumers. Therefore, real time decision making is a significant issue of IT environment for obtaining maximum profit in markets. A valuable tool for real time decision making are Decision Support Systems (DSSs). Here, we propose a DSS to identify a set of optimal markets for a producer. The producer aims to determine the markets that provide more profit for him via information systems of markets that analyze all transactions and prepare reports. Due to these reports the producer would decide about markets that provide the maximum profit. The effectiveness of the proposed integrated model is illustrated through numerical example.