bluuebunny/crossref_metadata_2025 huggingface dataset:
Indoor Air Quality Monitoring Systems Based on Internet of Things: A Systematic Review
Authors: Saini Jagriti , Dutta Maitreyee , Marques Gonçalo
Published: July 2020

Indoor air quality has been a matter of concern for the international scientific community. Public health experts, environmental governances, and industry experts are working to improve the overall health, comfort, and well-being of building occupants. Repeated exposure to pollutants in indoor environments is reported as one of the potential causes of several chronic health problems such as lung cancer, cardiovascular disease, and respiratory infections. Moreover, smart cities projects are promoting the use of real-time monitoring systems to detect unfavorable scenarios for enhanced living environments. The main objective of this work is to present a systematic review of the current state of the art on indoor air quality monitoring systems based on the Internet of Things. The document highlights design aspects for monitoring systems, including sensor types, microcontrollers, architecture, and connectivity along with implementation issues of the studies published in the previous five years (2015–2020). The main contribution of this paper is to present the synthesis of existing research, knowledge gaps, associated challenges, and future recommendations. The results show that 70%, 65%, and 27.5% of studies focused on monitoring thermal comfort parameters, CO2, and PM levels, respectively. Additionally, there are 37.5% and 35% of systems based on Arduino and Raspberry Pi controllers. Only 22.5% of studies followed the calibration approach before system implementation, and 72.5% of systems claim energy efficiency.
Cold Storage Effects on Fitness of the Whitefly Parasitoids Encarsia sophia and Eretmocerus hayati
Authors: Kidane Dawit , Ferrante Marco , Man Xiao-Ming , Liu Wan-Xue , Wan Fang-Hao , Yang Nian-Wan
Published: July 2020

Successful biological control of the whitefly Bemisia tabaci involves the mass rearing of biocontrol agents in large numbers for field release. Cold storage of the biocontrol agents is often necessary to provide a sufficient number of biocontrol agents during an eventual pest outbreak. In this study, the fitness of two whitefly parasitoids Encarsia sophia Girault and Dodd (Hymenoptera: Aphelinidae) and Eretmocerus hayati Zolnerowich and Rose (Hymenoptera: Aphelinidae) was evaluated under fluctuating cold storage temperatures. The emergence rate of old pupae of either species was not affected when stored at 12, 10, 8 and 6 °C for 1 week. Cold storage had no effect on the longevity of the emerging adult En. sophia except young pupae stored at 4 °C, while Er. hayati was negatively affected after 2 weeks of storage time at all temperatures. Parasitism by adults emerging from older pupae stored at 12 °C for 1 week was equivalent to the control. Combined with the results for the emergence time, we suggest that the old pupal stage of En. sophia and Er. hayati could be stored at 12 and 10 °C, respectively (transferred every 22 h to 26 ± 1 °C for 2 h), for 1 week, with no or little adverse effect.
Treatment Strategies for Pilonidal Sinus Disease in Switzerland and Austria
Authors: Lamdark Tenzin , Vuille-dit-Bille Raphael Nicolas , Bielicki Isabella Naomi , Guglielmetti Laura C. , Choudhury Rashikh A , Peters Nora , Doll Dietrich , Luedi Markus M , Adamina Michel
Published: July 2020

Background and objective: No current nationwide consensus exists on pilonidal disease (PD) treatment in Switzerland and Austria. The objective of this study was to assess and compare the spectrum of PD treatment strategies in Switzerland and Austria. Materials and Methods: A survey including 196 certified institutions (Switzerland, N = 99 and Austria, N = 97) was performed. Treatment strategies for both chronic and acute pilonidal disease were investigated, as well as evolution of treatment over the last 20 years. Results: In total, 92 of 196 (47%) hospitals participated in the survey. Recurrence rate (20%) was similar between the two countries. In acute pilonidal disease, a two-stage approach with incision and drainage as the first step was preferred over a one-stage procedure in both countries. In Austria, all patients with chronic pilonidal disease were treated as inpatients, whereas 28% of patients in Switzerland were treated on an outpatient basis (p = 0.0019). Median length of hospital stay was double in Austria (four days) compared to Switzerland (two days; p < 0.001). Primary resection and off-midline closure (p = 0.017) and the use of tissue flaps (p = 0.023) were performed more commonly in Austria than in Switzerland. Minimally invasive techniques were performed more often in Switzerland than in Austria (52% vs. 4%, p < 0.001). Overall, wide excision with secondary wound healing or midline closures declined over the last 20 years. Conclusion: Treatment strategies for chronic PD differ between Austria and Switzerland with more and longer inpatient care in Austria, increasingly minimally invasive approaches in Switzerland, and outdated procedures still being performed in both countries. Overall, heterogeneity of practice dominates in both countries.
Effect of Ultrasonic Surface Rolling Treatment on Corrosion Behavior of Alloy 690
Authors: Liu Jiang , Liu Junbiao , Zhang Xuehui , Ahmad Tahir , Liang Tongxiang , Zeng Longfei , Wang Chunming , Yang Bin
Published: July 2020

The nanograins (NG) on the top surface layer of alloy 690 were successfully prepared by ultrasonic surface rolling treatment (USRT). The average grain size of NG alloy 690 was 55 nm, and the thickness of the NG surface layer was about 1 μm. Meanwhile, the surface roughness was significantly reduced after surface nanocrystalliztion. The corrosion behavior of alloy 690 before and after USRT was studied in a secondary side environment containing chloride. Electrochemical corrosion experiments demonstrated that the passive film generated by USRT was denser than that formed on coarse-grained (CG) alloy 690. Pitting corrosion was prone to occur in grain boundaries of CG alloy 690, and the pits on the surface of NG alloy 690 were smaller than those generated on CG alloy 690 after 1000 h of an immersion experiment.
Influence of the Energy Density for Selective Laser Melting on the Microstructure and Mechanical Properties of Stainless Steel
Authors: Donik Črtomir , Kraner Jakob , Paulin Irena , Godec Matjaž
Published: July 2020

We have investigated the impact of the process parameters for the selective laser melting (SLM) of the stainless steel AISI 316L on its microstructure and mechanical properties. Properly selected SLM process parameters produce tailored material properties, by varying the laser’s power, scanning speed and beam diameter. We produced and systematically studied a matrix of samples with different porosities, microstructures, textures and mechanical properties. We identified a combination of process parameters that resulted in materials with tensile strengths up to 711 MPa, yield strengths up to 604 MPa and an elongation up to 31%, while the highest achieved hardness was 227 HV10. The correlation between the average single-cell diameter in the hierarchical structure and the laser’s input energy is systematically studied, discussed and explained. The same energy density with different SLM process parameters result in different material properties. The higher energy density of the SLM produces larger cellular structures and crystal grains. A different energy density produces different textures with only one predominant texture component, which was revealed by electron-backscatter diffraction. Furthermore, three possible explanations for the origin of the dislocations are proposed.
Characterization of Hot Deformation Behavior and Dislocation Structure Evolution of an Advanced Nickel-Based Superalloy
Authors: Yao Zhihao , Wang Hongying , Dong Jianxin , Wang Jinglin , Jiang He , Zhou Biao
Published: July 2020

The hot deformation behavior of an advanced nickel-based Haynes282 superalloy was systematically investigated employing isothermal compression tests in the sub-solvus and super-solvus temperature with various strain rates. The influence of deformation temperature and strain rate on the microstructure was studied by transmission electron microscope. The results reveal that the interaction between work hardening and dynamic softening did not reach equilibrium under lower deformation temperature and higher strain rate. The active energy of alloy is around 537.12 kJ/mol and its hot deformation constitutive relationship equation was expressed. According to the processing map and microstructure observations, two unsafe flow instability domains should be avoided. The optimum hot processing condition for homogeneous and fine dynamic recrystallization grains are obtained. TEM micrograph observations indicated that deformation temperature and strain rate affected recrystallization by affecting the evolution of dislocation substructures within the alloy. The nucleation and growth of DRX grains can be promoted by the relatively high deformation temperature and low strain rate. The main mechanism of dynamic recrystallization nucleation preferred to discontinuous dynamic recrystallization and the typical feature of discontinuous dynamic recrystallization showed grain boundary migration nucleation. The findings improve the understanding of hot deformation behavior and dislocation substructures evolution of the superalloy, which benefits the accurate control of microstructures of nickel-based superalloys, and tailors the properties of final components used in the land-based gas turbine.
Behavior‒Output Control Theory, Trust and Social Loafing in Virtual Teams
Authors: Robert Lionel P.
Published: July 2020

Social loafing, the act of withholding effort in teams, has been identified as an important problem in virtual teams. A lack of social control and the inability to observe or trust that others are fulfilling their commitments are often cited as major causes of social loafing in virtual teams where there is geographic dispersion and a reliance on electronic communications. Yet, more research is needed to better understand such claims. The goal of this study was to examine the impact of control and trust on social loafing in virtual teams. To accomplish this, we proposed and empirically tested a multi-level research model that explains the relationships among team controls, trust, social loafing, and team performance. We tested the model with 272 information technology employees in 39 virtual teams. Results indicate that control and trust reduce social loafing separately and also jointly.
The Effect of Finishing and Polishing Sequences on The Surface Roughness of Three Different Nanocomposites and Composite/Enamel and Composite/Cementum Interfaces
Authors: Babina Ksenia , Polyakova Maria , Sokhova Inna , Doroshina Vladlena , Arakelyan Marianna , Novozhilova Nina
Published: July 2020

The purpose of this study was to investigate the effect of final surface treatment and dental composite type on the roughness of the composite surface, composite/enamel interface, and composite/cementum interface, as well as on the polishing time. Class V cavities prepared in extracted teeth (n = 126) were restored using one of the three nanohybrid composites with different filler sizes. The specimens were randomly assigned to three different finishing and polishing sequences. The roughness (Ra) of the investigated surfaces was measured using the contact profilometer. The time required to achieve visible gloss was documented. The data were analyzed using ANOVA with Tukey’s post hoc test (p < 0.05). There was no significant influence of the composite type on the restoration surface roughness (p = 0.088), while the polishing method had a significant impact (p < 0.001). The Ra of the composites ranged between 0.08 µm and 0.29 µm, with the lowest values (0.09 µm ± 0.05 µm) found in the aluminum oxide disc group (p < 0.001). The time to achieve a visible composite gloss was influenced by the polishing method, composite type, and interactions between these factors (p < 0.001). The interface roughness was significantly greater than that of the composite surface (p < 0.001), and depended on the composite type and polishing system employed.
Omega-3 Phospholipids from Krill Oil Enhance Intestinal Fatty Acid Oxidation More Effectively than Omega-3 Triacylglycerols in High-Fat Diet-Fed Obese Mice
Authors: Kroupova Petra , van Schothorst Evert M. , Keijer Jaap , Bunschoten Annelies , Vodicka Martin , Irodenko Ilaria , Oseeva Marina , Zacek Petr , Kopecky Jan , Rossmeisl Martin , Horakova Olga
Published: July 2020

Antisteatotic effects of omega-3 fatty acids (Omega-3) in obese rodents seem to vary depending on the lipid form of their administration. Whether these effects could reflect changes in intestinal metabolism is unknown. Here, we compare Omega-3-containing phospholipids (krill oil; ω3PL-H) and triacylglycerols (ω3TG) in terms of their effects on morphology, gene expression and fatty acid (FA) oxidation in the small intestine. Male C57BL/6N mice were fed for 8 weeks with a high-fat diet (HFD) alone or supplemented with 30 mg/g diet of ω3TG or ω3PL-H. Omega-3 index, reflecting the bioavailability of Omega-3, reached 12.5% and 7.5% in the ω3PL-H and ω3TG groups, respectively. Compared to HFD mice, ω3PL-H but not ω3TG animals had lower body weight gain (−40%), mesenteric adipose tissue (−43%), and hepatic lipid content (−64%). The highest number and expression level of regulated intestinal genes was observed in ω3PL-H mice. The expression of FA ω-oxidation genes was enhanced in both Omega-3-supplemented groups, but gene expression within the FA β-oxidation pathway and functional palmitate oxidation in the proximal ileum was significantly increased only in ω3PL-H mice. In conclusion, enhanced intestinal FA oxidation could contribute to the strong antisteatotic effects of Omega-3 when administered as phospholipids to dietary obese mice.
Erosion Process and Temporal Variations in the Soil Surface Roughness of Spoil Heaps under Multi-Day Rainfall Simulation
Authors: Lv Jiaorong , Xie Yongsheng , Luo Han
Published: July 2020

The extensive artificially accelerated erosion of spoil heaps on newly engineered landforms is a key ecological management point requiring better understanding. Soil surface roughness is a crucial factor influencing erosion processes; however, study on spoil heap erosion with a view of surface roughness is lacking. This study investigated the erosion processes and the spatiotemporal variation of surface roughness on spoil heaps, and then, analyzed how the roughness affected the hydrological and sediment yield characteristics. Sequences of four artificial rainstorms with constant rainfall intensity (90 mm/h) were applied to cone-shaped spoil heaps (ground radius 3.5 m, height 2.3 m) of a loess soil containing 30 mass percent rock fragments. The surface elevation was sampled by a laser scanner. For the surface roughness indicators, the root mean square height (rmsh) and the correlation length (cl) increased sharply during the first rainfall event, and in the last three rainfall events, rmsh increased slightly and cl showed a relative decrease. The initial rmsh/cl of the whole slope surface ranged from 0.063 to 0.135, and increased with the rainfall sequence, thus, indicating that the spoil heap surface became rougher. Increasing soil roughness in the rainfall sequence delayed the initial runoff time and increased the runoff yield. The average runoff coefficient of the spoil heaps was 0.658. The average erosion rate of each rainfall event can be simulated by a regression equation of the corresponding average runoff rate and median cl (R-square of 0.816). Soil slumping with an average volume of 0.014 m3 occurred in the first two rainfall events, thus, significantly changing the roughness and peak instant erosion rate. Together, the results revealed the effects of surface roughness on the erosion of spoil heaps and would provide a useful reference for soil loss prediction and control.
A Spatial Group-Based Multi-User Full-Duplex OFDMA MAC Protocol for the Next-Generation WLAN
Authors: Peng Meiping , Li Bo , Yan Zhongjiang , Yang Mao
Published: July 2020

The Wireless Local Area Network (WLAN) has become a dominant piece of technology to carry wireless traffic for Internet of Things (IoT). The next-generation high-density WLAN scenario is very suitable for the development trend of the industrial wireless sensor network. However, in the high-density deployed WLAN scenarios, the access efficiency is low due to severe collisions, and the interference is diffused due to the scattered locations of the parallel access stations (STAs), which results in low area throughput, i.e., low spatial reuse gain. A spatial group-based multi-user full-duplex orthogonal frequency division multiple access (OFDMA) (GFDO) multiple access control (MAC) protocol is proposed. Firstly, the STAs in the network are divided into several spatial groups according to the neighbor channel sensing ability. Secondly, a two-level buffer state report (BSR) information collection mechanism based on P-probability is designed. Initially, intra-group STAs report their BSR information to the group header using low transmission power. After that, group headers report both their BSR information collected from their members and inter-group interference information to the access point (AP). Finally, AP schedules two spatial groups without mutual interference to carry on multi-user full duplex transmission on the subchannels in cascading mode. The closed-form formulas are theoretically derived, including the number of uplink STAs successfully collected by AP, the network throughput and area throughput under saturated traffic. The simulation results show that the theoretical analysis coincide with the simulation results. The system throughput of the GFDO protocol is 16.8% higher than that of EnFD-OMAX protocol.
Comparison of Human Resources Management in Non-Family and Family Businesses: Case Study of the Czech Republic
Authors: Horváthová Petra , Mikušová Marie , Kashi Kateřina
Published: July 2020

Human resources management, which includes a wide range of activities, may vary between businesses. One of the reasons for these differences may be the fact that they are non-family or family businesses. The purpose of this study is to identify differences in the area of human resources management between non-family and family businesses operating in the Czech business environment. The authors formulated three research questions and two hypotheses. The article’s main findings are: non-family and family businesses do not substantially differ in human resources management. The article is formulating more general conclusions in the researched area, which can serve as a starting point for further directions of possible research on this issue.
Evaluation of Two Improved Schemes at Non-Aligned Intersections Affected by a Work Zone with an Entropy Method
Authors: Shao Yang , Luo Zhongbin , Wu Huan , Han Xueyan , Pan Binghong , Liu Shangru , Claudel Christian G.
Published: July 2020

The impact of work zones on traffic is a common problem encountered in traffic management. The reconstruction of roads is inevitable, and it is necessary and urgent to reduce the impact of the work zone on the operation of traffic. There are many existing research results on the influence of highway work zones, including management strategies, traffic flow control strategies, and various corresponding model theories. There are also many research results on the impacts of urban road and subway construction on traffic operation, including construction efficiency, economic impact, and travel matrix. However, there are few studies concerning the choice of work zone location, and most previous studies have assumed that the work zone choice was scientific and reasonable. Therefore, it is reasonable to choose the location of the work zone and to assess whether there is room for improvement in the road form of the work zone, but this remains a research gap. Therefore, we studied a seven-lane main road T-intersection in Xi’an, China, and investigated a work zone located at this intersection that caused a road offset, leading to the non-aligned flow of main traffic. We designed two road improvement schemes and multiple transition schemes, used VISSIM software to evaluate the traffic operation of the two schemes, and used the entropy method to choose the suitability of the two schemes under different conditions. According to the results, in the best case, the driving time, delay, and number of stops are reduced by 44%, 66%, and 92%.
Perceived Value in Sporting Events (PVSP): A Further Step for the Strategic Management
Authors: Crespo Hervás Josep , Prado-Gascó Vicente , González-Serrano María Huertas
Published: July 2020

The perception of sporting events spectators is a crucial area of research in the sport management field. These studies analyze different variables, the perceived value of which has gained relevance in recent years. By providing superior value to consumers, organizations can achieve a competitive advantage and guarantee their sustainability. However, a limitation found in the literature is that most of the scales used to measure it are one-dimensional or with single items, and do not provide enough information. Therefore, this study aims to analyze the psychometric properties of the Multidimensional Scale of Perceived Value (PVSE) for the evaluation of sporting events. The questionnaire was administered to a sample of 497 spectators with an average age of 36.57 years (SD = 12.23) at a basketball sporting event. The results showed the validity of the multidimensional structure of this scale for sporting events (χ2(gl) = 981.22 (284); S-B χ2(gl) = 0.93; NNFI = 0.94; IFC = 0.94; Incremental F Index (IFI) = 0.94; RMSEA (IC) = 0.057 (0.05–0.06)). Specifically, six dimensions were found to be the appropriate psychometric properties of the scale (α = 0.81). This multidimensional scale of perceived value can be a useful tool for the evaluation of sports consumer experiences, considering both the benefits and sacrifices that a spectator makes when attending a sporting event. Hence, sport managers will be able to discover how to create policies to provide more value to sports spectators, which will be reflected in the sustainability of sporting events.
Cluster Analysis of Public Bike Sharing Systems for Categorization
Authors: Mátrai Tamás , Tóth János
Published: July 2020

The world population will reach 9.8 billion by 2050, with increased urbanization. Cycling is one of the fastest developing sustainable transport solutions. With the spread of public bike sharing (PBS) systems, it is very important to understand the differences between systems. This article focuses on the clustering of different bike sharing systems around the world. The lack of a comprehensive database about PBS systems in the world does not allow comparing or evaluating them. Therefore, the first step was to gather data about existing systems. The existing systems could be categorized by grouping criterions, and then typical models can be defined. Our assumption was that 90% of the systems could be classified into four clusters. We used clustering techniques and statistical analysis to create these clusters. However, our estimation proved to be too optimistic, therefore, we only used four distinct clusters (public, private, mixed, other) and the results were acceptable. The analysis of the different clusters and the identification of their common features is the next step of this line of research; however, some general characteristics of the proposed clusters are described. The result is a general method that could identify the type of a PBS system.
The EU Food Label ‘Protected Geographical Indication’: Economic Implications and Their Spatial Dimension
Authors: Chilla Tobias , Fink Benedikt , Balling Richard , Reitmeier Simon , Schober Karola
Published: July 2020

This study analyses the economic effects of the EU policy on the protection of origin. The focus is on three types of food products with Protected Geographical Indication (PGI), whose reference areas are located in the Free State of Bavaria: Beer (Bayerisches Bier PGI), asparagus (Franken-Spargel PGI, Schrobenhausener Spargel PGI), and carp (Aischgründer Karpfen PGI, Oberpfälzer Karpfen PGI). The study is based on secondary statistical analysis and a series of expert interviews. The results show positive effects on sales mainly for beer on international markets, and positive effects on price mainly for carp on the local and regional levels. All in all, we see that protection of origin stabilizes and supports the economic trajectory of its product. This study also shows that its economic effects vary widely: Firstly, price and sales effects are not automatic and differ in intensity; and secondly, the spatial dimensions of the economic effects exhibit different patterns. The primarily price-related effects at the local–regional level for carp (and to some extent for asparagus) are categorized as local effects (type A). The sales effect at the global level for beer is categorized as type B (export effect). Finally, this study postulates further potential forms of ‘price and sales geographies’.
Novozavjetna biblijska bibliografija (2016.-2018.)
Authors: Višaticki Karlo , Zovko Tihonija
Published: July 2020

Prilog je drugi dio, nastavak priloga, koji je već objavljen u „Crkvi u svijetu“, a koji se odnosi na starozavjetni dio biblijske bibliografije na hrvatskom jeziku. Obrađeno je ukupno sedamnaest (17) časopisa, koji su publicirani u Republici Hrvatskoj odnosno u Bosni i Hercegovini. Prilog je podijeljen u sedam (7) dijelova: 1. Izdanja Svetog pisma (1 x); 2. šest (6) monografija; 3. dvije (2) doktorske disertacije; 4. ostalo: jedan (1) spis; 5. dvadeset devet (29) priloga u zbornicima od osamnaest (18) autora; 6. prilozi iz stručnih časopisa znanstvenog karaktera (A1, A2…) – ukupno trideset sedam (37) priloga od dvadeset četiri (24) autora, te 7. prilozi iz „tjednika, mjesečnika, Biblija danas“ – ukupno sto šesnaest priloga (116) od jedanaest (11) autora. Želja je i nakana autora priloga biti od pomoći svim kolegicama i kolegama ali i svim studenticama/ studentima te ljubiteljima Riječi Božje, koji se bave Biblijom i kojima ovaj prilog može olakšati traženje naslova određene tematike.
Evaluation of Temporal and Spatial Variations of Water Quality Parameters in Zohreh River, Iran
Authors: Ravanbakhsh Maryam , Tahmasebi Birgani Yaser , Dastoorpoor Maryam , Ahmadi Angali Kambiz
Published: July 2020

Discriminant analysis (DA) and principal component analysis (PCA), as multivariate statistical techniques, are used to interpret large complex water quality data and assess their temporal and spatial variation in the basin of the Zohreh river. In this study, data sets of 16 water quality parameters collected from 1966 to 2013) in 4 stations (1554 observations for each parameter) were analyzed. PCA for data sets of Kheirabad, Poleflour, Chambostan and Dehmolla stations resulted in 4, 4, 4, and 3 latent factors accounting for 88.985%, 93.828%, 88.648%, and 88.68% of the total variance in water quality parameters, respectively. It is indicated that total dissolved solids (TDS), electrical conductivity (EC), chlorides (Cl−), sodium (Na), sodium absorption ratio (SAR), and %Na were responsible for water quality variations which are mainly related to natural and anthropogenic pollution sources including climate effects, gypsum, and salt crystals in the supratidal of Zohreh river delta, fault zones of Chamshir I and II, drainage of sugarcane fields, and domestic and industrial wastewaters discharge into the river. DA reduced the data set to only seven parameters (discharge, temperature, electrical conductivity, HCO3-, Cl-, %Na, and T-Hardness), affording more than 58.5% correct assignations in temporal evaluations and describing responsible parameters for large variations in the quality of the Zohreh river.
MAN AND THE WORLD IN THE RUSSIAN NOVEL – METAMORPHOSES OF HEROES OF «A COMMON STORY» BY IVAN GONCHAROV
Authors: Kazakova Svetlana K.
Published: July 2020

The article proposes a new interpretation of the denouement of «A Common Story» by Ivan Goncharov. Based on the analysis of many implicit details, it is hypothesised that the heroes’ return to their own «I», hidden both from themselves and from the reader in the epilogue of the novel rather than the rebirth of heroes (the «sensitive» nephew and the «cold» uncle). This conclusion changes the perspective of the consideration of «A Common Story» in the context of European literature and considers it necessary to clarify the existing typological characteristics of «A Common Story» (a novel of upbringing, a novel of «loss of illusions»). Ivan Goncharov’s confl ict between people and society, which is characteristic of the European romance tradition, gets a more optimistic interpretation: the idea of a tragic, hopeless confrontation between the individual and society leaves the text. The confl ict with the outside world is considered in relation to the internal contradictions of the heroes and is overcome on the path to knowing oneself: Aduev Jr. concentrates on «career and fortune», Aduev-uncle refuses service and work for the sake of his wife’s health and hope for a belated gaining family happiness.
ON THE CONTRADICTIONS IN THE PROLETKULT
Authors: Abekhtikov Yevgeniy Ye.
Published: July 2020

The article is devoted to the problem of proletarian culture, the history of the creation and functioning of the Proletkult organisation. The author considers its theoretical basis, the practical implementation of which proved to be problematic.
The work shows that all Marxist intellectuals believed that proletarian culture has nothing to do with the bourgeois one.
Alexander Bogdanov, the most infl uential ideologist of the Proletkult, believed that the proletarian culture is developed by the newest proletariat, which he called «industrial». An analysis of the majority of his statements shows that the intelligentsia and peasantry was not even considered to be involved in the creation of the new culture by Alexander Bogdanov. However, during its heyday, the Proletkult was a refuge for intellectuals who devoted themselves to the service of Revolution and the Communist Party. The article also draws attention to the problem of the relationship of the creators and organisers of the Proletkult with the Soviet state and the Bolshevik Party. The Proletkult claimed autonomy in the sphere of culture, completely rejecting the idea of submission to any state institution. However, Lenin evaluated the Proletkult negatively, considering it
to be not only useless, but also harmful. Part of Lenin’s problem with the Proletkult was Alexander Bogdanov personally, as he would be the rival of the former at one time and, possibly, could be the political rival in future, using the Proletkult as an organisational base
SIMULATION VIRTUAL EDUCATIONAL ENVIRONMENT AS SPECIAL EDUCATIONAL SPACE:
DUALITY OF NATURE
Authors: Nazarov Yevgeniy S.
Published: July 2020

Based on the integrative interpretation of the Federal Law «On Education in the Russian Federation» and a number of positions of foreign and Russian scientists, this article comprehensively examines the essence of a simulated virtual educational environment. In the framework of the presented analysis, being a lecturer at a military university, the author actualises the problem from the standpoint of ensuring the qualitative growth of the potential of higher military education, where the formation of professional competency of future army offi cers via innovative technologies is deemed the key factor. The article emphasises that out of the existing educational media only the technosphere of e-learning is enshrined in the federal Law «On Education in the Russian Federation « (Article 16, Clause 1), i.e. the information presented in the databases
and the infrastructure for its accumulation, storage and transmission, while the content and application methods along with the forms of e-learning are overlooked. In this regard, the article is focused on understanding the essence of a simulated virtual educational environment and learning tools in it. As a result of the analysis, the author comes to the conclusion that such environment is created not only with the help of information and communication technologies, but also with the intellect and imagination of a person, highlighting the duality of the essence of the virtual environment, its external and internal material and ideal manifestations.
Karakteristik Blockchain Teknologi Dalam Pengembangan Edukasi
Authors: Kosasi Sandy
Published: July 2020

Proses pelaksanaan edukasi secara global hakekatnya belum dapat mengikuti perkembangan zaman saat ini. Berbagai permasalahan saat ini tengah dihadapi oleh sektor pendidikan, dalam hal ini sebut saja permasalahan verifikasi dan adanya pihak ketiga dalam penanganan sertifikat yang merupakan luaran mikro maupun makro dari sebuah proses pembelajaran. Adanya mercusuar tentang teknologi Blockchain, kerap disebut sebagai salah solusi revolusioner dari polemik pendidikan selama ini. Perpaduan antara bidang edukasi dan teknologi blockchain akan menciptakan revolusi baru dari industri pendidikan. Terdapat berbagai pencerahan dari solusi ini, namun dirasa belum cukup untuk menjelaskan karakteristik blockchain secara detail dari edukasi menggunakan blockchain, yang secara keseluruhan membahas tentang keberadaan blockchain for education berdasarkan kajian ilmu. Karakteristik blockchain ini dimasa depan akan sangat berguna sebagai platform literatur bagi peneliti yang akan memulai penelitian dasar dan terapan yang menjurus ke arah blockchain for education. Disamping itu, dari segi biaya, ruang penyimpanan, dan kecepatan teknologi blockchain akan diusulkan solusinya dalam bentuk framework. Alhasil, penelitian ini juga bisa menjadi landasan platform serta karakteristik blockchain baru sebagai cikal bakal pemerintahan berbasis teknologi blockchain.
Pemanfaatan Teknologi Blockchain Untuk Mengoptimalkan Keamanan Sertifikat Pada Perguruan Tinggi
Authors: Argani Abimanyu , Taraka Wahyatma
Published: July 2020

Penerapan Teknologi Blockchain guna memberikan keamanan terhadap keamanan sertifikat di era digital 4.0 agar tidak terjadinya manipulasi oleh pihak yang tidak bertanggung jawab. Dengan menggunakan metode perumusan masalah, perancangan penelitian, pengumpulan data, pengolahan & penyajian data, analisa & laporan penelitian dan metode penelitian 7 (tujuh) literature review. Hal ini diharapkan agar dapat menyelesaikan permasalahan keamanan sertifikat itu sendiri. Saat ini keamanan dalam sertifikat masih sangat minim, oleh karena itu dibutuhkan adanya teknologi blockchain untuk mengamankan sertifikat dari proses manipulasi oleh pihak yang tidak bertanggung jawab. Secara khusus, terdapat 2 (dua) manfaat dari penelitian ini yang menggunakan teknologi blockchain, (1) Sertifikat menjadi lebih aman dengan adanya kode enkripsi, (2) Sertifikat menjadi lebih transparan dengan adanya blockchain. Penelitian ini mengimplementasikan kode enkripsi ke dalam sistem keamanan sertifikat menggunakan teknologi blockchain dimana saat ini banyaknya kasus manipulasi data di dalam sertifikat.
SELECCIÓN DE MAÍCES NATIVOS COMO DONADORES DE CARACTERÍSTICAS AGRONÓMICAS ÚTILES EN HÍBRIDOS COMERCIALES
Authors: Ramírez-Díaz José L. , Ledesma-Miramontes Alejandro , Vidal-Martínez Víctor A. , Gómez-Montiel Noel O. , Ruiz-Corral José A. , Velázquez-Cardelas Gustavo A. , Ron-Parra José , Salinas-Moreno Yolanda , Nájera-Calvo Luis A.
Published: July 2020

México es centro de origen del maíz (Zea mays L.) y como tal, la especie posee una amplia diversidad genética. Sin embargo tal diversidad ha sido poco aprovechada por los programas públicos de mejoramiento genético de México en el desarrollo de híbridos comerciales, pues en parte, se usan metodologías que no involucran el uso directo de pares heteróticos mejorados. Los objetivos de esta investigación son: (i) presentar una propuesta metodológica para incorporar germoplasma de maíz nativo sobresaliente en pares heteróticos mejorados para generar híbridos simples comerciales de maíz, y (ii) mostrar resultados de la aplicación de esta metodología en el rendimiento y tamaño de grano de los híbridos y sus progenitores. La metodología consta de tres etapas: 1) selección del par heterótico mejorado, 2) selección e incorporación del germoplasma nativo al material mejorado, y 3) la aplicación del método de selección recíproca recurrente (SRR) con una modificación por selección familiar. Para evaluar la metodología se seleccionó una cruza simple subtropical a cuyos progenitores se incorporó 25 % de germoplasma de las razas Ancho y Tabloncillo, respectivamente. Se derivaron líneas S1, y se obtuvieron mestizos, los cuales se evaluaron en cuatro localidades. La metodología propuesta fue efectiva para incorporar germoplasma nativo al mejorado, pues en los dos grupos de razas, se identificaron mestizos con rendimiento de grano similar a la cruza simple original. También, fue efectiva para aumentar los tamaños de grano plano extra grande, grande y medio, respectivamente. Esta metodología permitirá incorporar germoplasma de maíz nativo o mejorado a los pares heteróticos actuales o a cruzas simples sobresalientes.
POSIBLE USO DE ESPECTROSCOPÍA RAMAN COMO HERRAMIENTA DE ANÁLISIS EN LA PRODUCCIÓN Y CONTROL DE CALIDAD DE BACANORA
Authors: Ortega-Clavero Valentín , Salazar-Solano Vidal , Weber Andreas , Schröder Werner , Javahiraly Nicolas , Meyrueis Patrick , Moreno-Dena J. Mario
Published: July 2020

La industria del bacanora en Sonora, México, enfrenta la influencia de una compleja red de factores culturales, tecnológicos, económicos y legales que inhiben su desarrollo. Ello ocurre pese al esfuerzo institucional por radicar un marco normativo que elimine la práctica de los métodos informales de elaboración que derivan en calidades heterogéneas de licor. El conseguirlo se complica ante la dificultad que enfrentan los actores de esta industria para implementar prácticas efectivas de verificación de las normas vigentes en los confines de la geografía de la Denominación de Origen. En este documento se describe el uso de un prototipo de espectrómetro Raman por transformada de Fourier para analizar cualitativamente muestras desconocidas de bacanora. Este dispositivo se construyó con el uso de un interferómetro Michelson convencional, un contador de fotones de diseño propio y un foto-detector de referencia. Los resultados del trabajo confirman que dada su naturaleza de diseño y construcción, este instrumento de medición y su efectiva técnica de operación a bajo costo, constituye una alternativa viable, adaptable fácilmente a las necesidades de los actores productivos e institucionales, para asistirlos en la elaboración de bacanora y a la verificación de su calidad conforme a los criterios de la normatividad.
IMPACTO DE LA REVISTA FITOTECNIA MEXICANA Y DE LAS REVISTAS MEXICANAS INDEXADAS
Authors: Bravo-Vinaja Ángel
Published: July 2020

El Factor de Impacto (FI) es una medida bibliométrica que Eugene Garfield e Irving H Sher crearon a principios de 1960, con la finalidad de seleccionar revistas para el Science Citation Index (SCI) (Garfield, 2005). Esta medida ahora es manejada por Thomson Reuters, editor del Journal of Citation Reports (JCR) en sus ediciones de Ciencias y Ciencias sociales (InCitesTM Journal of Citation Reports® 2015).
FACTORES QUE AFECTAN LA DEMANDA DE SEMILLA MEJORADA DE MAÍZ EN MÉXICO
Authors: García-Salazar J. Alberto , Guzmán-Soria Eugenio
Published: July 2020

El conocimiento de los factores que determinan el aumento de la demanda y la tasa de utilización de semilla mejorada es importante por las ganancias que se pueden obtener en la productividad y en el bienestar de los productores de maíz (Zea mays L.). Con el objetivo de determinar los factores que afectan la demanda y la probabilidad de usar semilla mejorada de maíz en México, se estimó un modelo logit en donde la variable dependiente es el logit de la razón de probabilidades de usar semilla mejorada contra semilla criolla, y las variables independientes son el tamaño de predio, el ingreso y los precios de semilla mejorada, fertilizantes y plaguicidas. Los resultados indican que si el tamaño de predio y el ingreso por hectárea aumentan en 10 %, entonces la demanda y la probabilidad de usar semilla mejorada aumentan en 3.8 y 1.7 %, respectivamente. Una disminución de 10 % en el precio de la semilla mejorada aumentaría la demanda y la probabilidad de usar semilla mejorada en 3.7 %. Ante una disminución simultánea de 10 % en los precios de la semilla mejorada, del fertilizante y de los plaguicidas, la probabilidad de usar semilla mejorada aumentaría en 17.5 %. Estos resultados demuestran la importancia que tienen los insumos agrícolas como fuente de crecimiento en el uso de semilla mejorada y, por lo tanto, de la productividad por unidad de superficie.
PRESENCIA DE Xanthomonas albilineans (Ashby) Dowson EN CAÑA DE AZÚCAR EN LA CHONTALPA, TABASCO, MÉXICO
Authors: García-Juárez H. Salomón , Ortiz-García Carlos F. , Salgado-García Sergio , Valdez-Balero Apolonio , Silva-Rojas Hilda V. , Ovalle-Sáenz Werner R.
Published: July 2020

Una de las enfermedades agresivas de la caña de azúcar es la escaldadura de la hoja causada por Xanthomonas albilineans (Xa). En las zonas cañeras del estado de Tabasco, México, no se tienen registros de afectaciones por Xa. Por ello el objetivo de este trabajo de investigación fue determinar la presencia de X. albilineans en los principales clones comerciales, y conocer la dispersión de la enfermedad en la zona cañera de La Chontalpa, Tabasco. Se llevó a cabo un muestreo dirigido para cinco clones (MEX 69-290, MEX 79-431, MEX 68-P-23, CP 72-2086 y RD 75-11), cuatro tipos de suelo (Cambisol, Vertisol, Gleysol y Fluvisol) y dos rangos de lluvia (1793-1936 mm y 1937-2085 mm). Un total de 105 plantaciones fueron seleccionadas y georreferenciadas, y se colectaron 10 tallos de cada una. El jugo extraído de las partes de los tallos se impregnó en una membrana de nitrocelulosa, que luego se revelaron por el método de inmunoensayo de adsorción de gota. Los resultados muestran la presencia de Xa en los tallos de tres clones asintomáticos (MEX 69-290, MEX 68-P-23 y MEX 79-431) con incidencias ≥ 10 % en cuatro plantaciones muestreadas. La distribución de la enfermedad fue en agregado, y ahora localizada al sur de la zona de producción cañera. La enfermedad está en un periodo sintomatológico de latencia en los clones positivos que se consideran tolerantes, que carecen de síntomas visuales en las plantas colectadas. Xa fue aislado de clones de caña de azúcar susceptibles (EMEX00-21 y CXZ7564) con síntomas foliares de “línea de lápiz”. El análisis molecular mediante amplificación de un fragmento de 16S rDNA (1392 pb) dio similitudes máximas con las secuencias de Xa registradas en el Genbank. Este estudio constituye el primer reporte de la presencia de Xa en Tabasco, México, confirmado a nivel molecular.
Oportunidades y desafíos relevantes de la educación para la comunicación ciudadana como concreción de una agenda de desarrollo local sostenible
Authors: López León María Elena , Linares Herrera Manuel Paulino , Junco Martínez Felisa
Published: July 2020

La concepción del uso de las TIC con el propósito de formar sujetos capaces de interactuar con ellas para el ejercicio de la crítica, la creatividad y la responsabilidad social. El empleo de La Educación para la Comunicación como principio rector, para comprender la relación entre los actores del proceso de comunicación (relación entre los productores, el proceso productivo, su producto y la recepción de los mensajes en circularidad constante), así como en el campo pedagógico, el asumido por los programas de formación de receptores autónomos y críticos frente a los medios digitales. El estudio del uso de las TIC desde un enfoque humanista sustentado en la teoría de las mediaciones sociales, como modelo de aprendizaje que sitúa al sujeto como centro del proceso de enseñanza aprendizaje (PEA), permitiendo lograr una formación cultural-cívico-pedagógico concebida a partir del principio de contribuir a la formación de un individuo con capacidades para transformar las estructuras y sistemas de comunicación en la sociedad. Es la razón de ser de presente artículo.
Competencias y formación ética de los profesionales de la comunicación corporativa en contextos interculturales
Authors: Martín-Antoranz Pablo , Cabezuelo-Lorenzo Francisco , Bartolomé-Muñoz-de-Luna Ángel
Published: July 2020

Este trabajo propone una revisión de la necesidad de fomentar el estudio de la Ética y de la Deontología Profesional aplicada al ámbito de la Comunicación Estratégica e Institucional, sobre todo al mundo de las Relaciones Públicas y los Gabinetes de Comunicación. La revolución digital, que ha llegado para quedarse, plantea nuevos retos que el profesional de la comunicación estratégica debe afrontar: el uso de la información de los clientes, la privacidad y publicidad de las redes sociales, el nuevo derecho al olvido en la red, nuevos delitos a la intimidad y el honor a través de las redes sociales, la transparencia y acceso a la información tan de moda como herramientas para el control del poder político. A todo ello, hay que añadir el contexto de un nuevo escenario económico, social y cultural. Vivimos en una sociedad multicultural con conflictos étnicos, culturales y religiosos, permanentemente. En la actualidad, la interculturalidad se ha convertido en una realidad que no puede ser ignorada. Los futuros profesionales de la Comunicación necesitan una formación específica en valores universales que les capaciten para un mundo contemporáneo en el que cada vez tiene más sentido el término globalización. La ética adaptada a la interculturalidad es una competencia que debe desarrollarse de forma transversal en diferentes materias de las impartidas en los estudios, grados y especializaciones de las Ciencias de la Comunicación.
Uma narrativa histórica da capoeira no cenário norte-mineiro: uma prática cultural em Montes Claros/MG
Authors: Silva Stéfanie Bruna Gonçalves da , Pereira Ester Liberato
Published: July 2020

O presente artigo trata de um processo de desenvolvimento histórico da prática da capoeira na cidade de Montes Claros, localizada na região norte do estado de Minas Gerais. Assim, abordam-se desde os seus primeiros indícios, bem como sua contribuição para a formação cultural norte-mineira. Objetivo: identificar um processo histórico da prática da capoeira em Montes Claros/MG, desde sua emergência, a partir da década de 1950, até os dias atuais. Métodos: foi realizada uma pesquisa documental em fontes documentais e impressas, tais como jornais locais que divulgaram diversos eventos relacionados à capoeira em Montes Claros, bem como documentos impressos fornecidos por alguns grupos de capoeira presentes na cidade, descrevendo sua história, e os projetos que desenvolvem. Tais fontes foram submetidas à análise documental. Resultados: Os primeiros indícios da capoeira em Montes Claros datam do final de 1958. A capoeira contou com diversos jornais locais como importantes colaboradores para conferir a devida importância para esta luta-arte, abordando diversos eventos sobre a prática na região e possibilitando o ganho de espaço junto ao cenário sociocultural norte-mineiro. Os grupos e admiradores desta prática, assim, passaram a realizar diversos eventos para a sociedade montes-clarense. Com a sua expansão, seus praticantes perceberam a necessidade de criar um grupo que tivesse por objetivo ampliar ainda mais esta prática cultural na cidade, criando, em 2013, a Liga Montes-Clarense de Capoeira. Com o desenvolvimento que a capoeira estava tomando, vários grupos foram emergindo e renomados mestres se mudaram para Montes Claros. Conclusão: Evidenciaram-se indícios da emergência e expansão da capoeira em Montes Claros, bem como do quanto esta prática cultural se desenvolveu no decorrer dos anos não somente na cidade, mas também na região norte-mineira, contribuindo para a formação cultural regional. Revelaram-se, também, importantes contribuintes que fizeram e seguem fazendo com que a capoeira desenvolva-se e seja valorizada.