bluuebunny/crossref_metadata_2025 huggingface dataset:
Mathematical modeling of articulated passenger train spatial vibrations
Authors:   Institute of Technical Mechanics of the National Academy of Sciences of Ukraine and the State Space Agency of Ukraine, Markova O. , Kovtun H. ,   Institute of Technical Mechanics of the National Academy of Sciences of Ukraine and the State Space Agency of Ukraine, Maliy V. ,   Institute of Technical Mechanics of the National Academy of Sciences of Ukraine and the State Space Agency of Ukraine
Published: July 2021

The problem of high-speed railway transport development is important for Ukraine. In many countries articulated trains are used for this purpose. As the connections between cars in such a train differ from each other, to investigate its dynamic characteristics not a separate car, but a full train vibrations model is necessary. The article is devoted to the development of the mathematical model for articulated passenger train spatial vibrations. The considered train consists of 7 cars: one motor-car, one transitional car, three articulated cars, one more transitional car and again one motor-car. Differential equations of the train motion along the track of arbitrary shape are set in the form of Lagrange’s equations of the second kind. All the necessary design features of the vehicles are taken into account. Articulated cars have common bogies with adjoining cars and a transfer car and the cars are united by the hinge. The operation of the central hinge between two cars is modeled using springs and dampers acting in the horizontal and vertical directions. Four dampers between two adjacent car-bodies act as dampers for pitching and hunting and are represented in the model by viscous damping. The system of 257 differential equations of the second order is set, which describes the articulated train motion along straight, curved, and transitional track segments with taking into account random track irregularities. On the basis of the obtained mathematical model the algorithm and computational software has been developed to simulate a wide range of cases including all possible combinations of parameters for the train elements and track technical state. The study of the train self-exited vibrations has shown the stable motion in all the range of the considered speeds (40 km/h – 180 km/h). The results obtained at the train motion along the track maintained for the speedy motion have shown that all the dynamic characteristics and ride quality index insure train safe motion and comfortable conditions for the travelling passengers.
Problems in the system analysis of space activities in Ukraine. Rocket and spacecraft dynamics and control
Authors:   Institute of Technical Mechanics of the National Academy of Sciences of Ukraine and the State Space Agency of Ukraine, Alpatov A.P.
Published: July 2021

This paper overviews the main research results obtained from 2016 to 2020 at the Department of System Analysis and Control Problems of the Institute of Technical Mechanics of the National Academy of Sciences of Ukraine and the State Space Agency of Ukraine. The overview was prepared using the method of phenomenological analysis. The results of the system analysis of the trends in the use of space technologies in different areas of human activities are presented. Methods of draft space program evaluation and R&D program formation algorithms are discussed. Research results on the dynamics of spacecraft and components thereof are presented. The dynamics of tethered space systems and microsatellites is considered. Consideration is given to the world’s trends in the development of space transportation systems, the features of their development in Ukraine, and the state of the art of the methodological basis of rocket/space hardware design in Ukraine. Recommendations on working out normative documents and lines of their refinement are given. System analysis methods were considered and found their further development as applied to the space sector. A method of structural-parametric identification was developed for the problem of object simulation with a multidimensional output in the class of beta-autoregressive models, in which autoregrassion weight coefficient ratios are determined based on beta-distribution density functions. On principles of the group data handling method, a regularity criterion was constructed and studied for simulation in the class of beta-autoregressive models in conditions of quasi-repeated observations. Investigations were conducted into the analysis, synthesis, and operation optimization of systems of multilevel, intellectual, and network management under uncertainty. Methodological approaches to the development of symbiotic self-contained aerospace and transport systems were elaborated. A new technology was developed for the construction of surrogate models with the use of approaches on the basis of the synergy of subject field methods and cognitive technologies based on general scientific achievements. Part of the research results has found prectuical use at Yuzhnoye State Design Office.
УДОСКОНАЛЕННЯ ТРАКТІВ ПІДГОТОВКИ ВУГІЛЬНОЇ ШИХТИ ДО КОКСУВАННЯ ШЛЯХОМ ВИКОРИСТАННЯ СУЧАСНОГО СОРТУВАЛЬНО-ЗМІШУВАЛЬНОГО ОБЛАДНАННЯ
Authors: Засельський Володимир Йосипович , Пополов Дмитро Володимирович , Зайцев Генадій Леонідович , Шепеленко Марія Іванівна
Published: July 2021

Вступ. В умовах існуючої кон’юнктури ринку, коли попит на металургійну продукцію залишається сталим або знижується, розвиток металургійної галузі можливий за рахунок оптимізації операційних витрат. Оскільки значною складовою собівартості готової продукції є витрати на електроенергію, середній темп зростання цін на яку за останніп’ять років склав 125 %, виникає необхідність у виконанні аналізу енергоспоживання з подальшою його оптимізацією.Проблематика. В діючій технологічній лінії виробництва коксу найбільш енергоємною технологічною операцією є подрібнення вугільної шихти, в якій не передбачено попереднє відсівання готового класу. Аналіз гранулометрично­го складу вугільних концентратів показав, що вхідна шихта містить лише 12,5 % фракцій, які потребують дроблення. Зважаючи що, валовий потік вугільного концентрату надходить до дробарок, це призводить до того, що коефіцієнт корисної дії використовуваних дробарок не перевищує 16—18 % та відбувається переподрібнення вугільних концентратів, що збільшує вміст фракції 0—0,5 мм, яка негативно впливає на якість коксу.Мета. Розробка науково-обґрунтованих рекомендацій щодо вдосконалення тракту підготовки вугільної шихти до коксування та використовуваного в них необхідного обладнання задля зниження споживання електроенергії та підвищення якості доменного коксу.Матеріали й методи. Використано емпіричні методи досліджень із застосуванням математичного апарату обробки статистичних даних.Результати. Розроблено технологічну схему підготовки вугільної шихти, яка дозволяє підвищити якість доменного коксу та зменшити питомі витрати електроенергії орієнтовно в 48 раз.Висновки. Підвищення якості підготовки вугільної шихти до спікання з одночасним зниженням енерговитрат обладнання, що виконує її переробку, може бути реалізовано удосконаленням існуючих технологічних трактів шляхом організації ділянок попереднього відсіву готового класу перед дробленням.
Створення імітаторів запаху наркотичних речовин для кінологічних центрів
Authors: Кальченко Віталій Іванович
Published: July 2021

Створення імітаторів запаху наркотичних речовин для кінологічних центрів
Роздуми після бою (деякі нотатки після Загальних зборів НАН України)
Authors: Яцків Ярослав Степанович
Published: July 2021

Роздуми після бою (деякі нотатки після Загальних зборів НАН України)
Mapeamento da vulnerabilidade natural à contaminação das águas subterrâneas do município de Herval/RS
Authors: Pereira Ândria da Silva , Cecconello Samanta Tolentino , Centeno Luana Nunes
Published: July 2021

As águas subterrâneas são uma alternativa o para abastecimento humano quando comparadas às águas superficiais, por apresentar melhor qualidade. O município de Herval/RS apresenta sua economia voltada para as atividades agrícolas e explora as águas subterrâneas para abastecimento da zona rural. O mapeamento da vulnerabilidade das águas subterrâneas permite identificar as áreas mais suscetíveis à contaminação do lençol freático devido as características intrínsecas do solo. Este estudo tem como objetivo a aplicação do método GOD para o mapeamento da vulnerabilidade natural à contaminação das águas subterrâneas para o município de Herval/RS. O grau de vulnerabilidade natural à contaminação das águas subterrâneas variou de insignificante a médio, onde os resultados com maiores índices representaram uma pequena parcela da área de estudo. O parâmetro grau de confinamento do método GOD, associado aos aspectos litológicos que também são aferidos através da metodologia foram determinantes para a obtenção dos resultados. Os resultados corroboram para o desenvolvimento das atividades agrícolas desenvolvidas no município de Herval/RS e servem como uma alternativa inicial à gestão de recursos hídricos subterrâneos.
Palavras-chave: Fragilidade; águas subterrâneas; GOD, Herval/RS.
Perilaku Keberagamaan Masyarakat Perdesaan Pasca Pembangunan PLTA Cisokan di Kabupaten Bandung Barat
Authors: Setia Paelani
Published: July 2021

This research examines the religious behavior of the people of Sukaresmi Village, Rongga District, West Bandung Regency after the construction of PLTA Cisokan, West Java. The construction of the Cisokan hydropower plant actually has a negative impact in the form of the destruction of the moral values of the Islamic religion due to the introduction of a new culture into social life. In overcoming this, religion is the key to strengthening awareness of improving the character and morals of rural communities. This awareness was influenced by political and economic dynamics which later manifested itself in an effort to revive religious traditions such as Syahriahan and Manakiban. The success in overcoming the moral decay of society is also influenced by the role of young ulama with broad scientific insight and effective communication. Through field research, interviews and document studies, this research concludes that the homogeneous characteristics of rural communities, including adherence to religion, are factors that facilitate the process of solving problems, including issues of morality and religion.
Law and Politics: Study of the Presidential Threshold in the 2019 General Election of Indonesia
Authors: Muslimin JM , Fadoliy Ahmad , Munawar Wildan
Published: July 2021

This study is intended to indicate that Indonesia's electoral system always experiences rapid dynamics in policy development. This study uses empirical normative legal research or a legal research method that uses a set of regulation relating to general elections and the rules of making positive law as reference of norms. Empirical research is also used to observe the results of human behavior in the form of physical archives. The methods are combined with the historical approach: an approach that is carried out by analyzing the debate arguments that occurred in the special committee meeting (Panitia Khusus) of the Election Draft Bill. The result of this research is the decision of the presidential threshold of 20% in the holding of presidential elections of 2019 contains the orthodox legal substance. This is because politically the law of its formation (Law No. 7 of 2017) is full of practical political interests of the ruling parties. Parties consisting of 6 factions gave a dominant opinion which leaned towards the 25% -30% threshold suggested by the government, while the other 4 factions do not agree with the high nomination threshold, because the concept of election must provide free space for each party to nominate their respective presidential candidates. The government had its own agenda to continue and extend the existing incumbent president and prevent the possibility for others. Therefore, in order to protect the agenda, high nomination threshold was proposed. Through content analyses of the regulation it can be stated that the high threshold has logical consequences for holding elections which create an insubstantial election environment and make the political climate in Indonesia unbalanced.
Effect of different sterilization methods on sensory quality and volatile flavor of flavor crab meat sauce
Authors: Zhu Yajun , Wu Haoran , Wang Futian , Jiang Shaotong , Lin Lin , Lu Jianfeng
Published: July 2021

Flavor crab meat sauce (FCMS) is a new type of aquatic condiment that is not only rich in nutrition but also unique in terms of flavor. However, very little is known about how sterilization methods affect the sensory quality and volatile flavor of FCMS. In the present study, canned FCMS was subjected to the following sterilization methods: pasteurization (PS), microwave sterilization (MS), ultrasonic sterilization (US), and high temperature sterilization (HTS). Each sterilization method was evaluated on the basis of texture, color, sensory score, volatile flavor, and total viable counts in FCMS observed after sterilization. Results demonstrated that the total viable count decreased to 28, 26, 58, and 18 CFU/g respectively after PS, MS, US, and HTS treatments; no coliform group was detected in any of these samples. PS and MS had no significant effect on the texture of FCMS (P > 0.05), but US and HTS reduced hardness and viscosity of FCMS. MS and HTS significantly reduced the L*, a*, and b* values of FCMS (P < 0.05). The original brightness and red value of FCMS remained the same after PS and US. MS and HTS reduced the sensory score of FCMS to a great extent, while PS and US maintained the original sensory score of FCMS. Assessment of volatile flavor profile of FCMS post different sterilization treatments revealed that MS and HTS reduced the total ester content, while US reduced the total amount of alcohols in FCMS. However, PS not only maintained the original total amount of esters in FCMS, but also increased the content of alcohols, aldehydes, and ketones. Therefore, PS could be selected as a feasible sterilization method for FCMS among the four different sterilization methods.
Pemahaman Guru PAUD Tentang Pembelajaran Berbasis STEAM dengan Penggunaan Media Loose Parts di Desa Bukit Harapan
Authors: Qomariyah Nurul , Qalbi Zahratul
Published: July 2021

This study aims to describe the level of understanding of PAUD teachers or PAUD educators about loose parts games. The research method used is qualitative, using the method of direct interviews with early childhood teachers in Bukit Harapan Village, Pinang Raya District, North Bengkulu Regency. The sample used is 3 teachers who teach in one of the PAUD schools. From the results of the interview, it was found that the teacher did not understand the loose parts game. And schools have not applied STEAM-based learning by using learning media in the form of loose parts. So that to overcome the lagging behind modern learning, the teachers at these schools will try to find information about STEAM-based learning so that they can keep up with the times and children's creativity can also be maximized.
The Features of Coping with a Specific Challenging Situation (COVID-19 pandemic)
Authors:   Ural Federal University, Kuvaeva I. O. , Strelnikova A. M. ,   Ural Federal University
Published: July 2021

The empirical results of the research devoted to the problem of coping behavior with stressful and the pandemic situations among youth (n=100) are discussed. The instruments are the following: Coping Inventory for Stressful Situations (Endler N.S., Parker J.D.A.) and Ways of Coping Questionnaire (Lazarus R., Folkman S.). The problem-oriented coping style is predominant among participants aged 17-31. Significant differences in coping strategies related to pandemic between the respondents who have been exposed to COVID-19 and respondents who were not infected with COVID-19 were not found (p>0.50). Respondents who have been exposed to COVID-19 demonstrated social avoidance style in stressful situations (p=0.021). The structure of coping behavior in group of participants who have been exposed to a new coronovirus infection included a greater number of correlations between stable coping styles and strategies for overcoming the pandemic situation. The female respondents demonstrated higher rate of avoidance behaviour and tend to seek social support more often than male respondents.
Factors associated with urinary tract infection in a Nursing Home
Authors: Silva João Luis Almeida da , Fonseca Cassiane Dezoti da , Stumm Eniva Miladi Fernandes , Rocha Roseanne Montargil , Silva Myria Ribeiro da , Barbosa Dulce Aparecida
Published: July 2021

ABSTRACT Objective: to analyze the factors associated with urinary tract infection occurrence in institutionalized elderly. Methods: this is a cross-sectional, analytical, quantitative study with 116 elderly people from a Nursing Home. Urinary tract infection diagnosis was carried out through urine culture and clinical assessment. Demographic data and associated factors were obtained from medical records. Statistical analysis included bivariate analysis and logistic regression models. Results: the factors associated with urinary tract infection (p<0.05) were being female; wheelchair user; diaper use; diuretic use; urinary and bowel incontinence; type 1 diabetes; benign prostatic hyperplasia; dehydration. Conclusion: this study revealed that it is important to consider non-modifiable factors such as sex and clinical comorbidities; however, dehydration, a modifiable factor, increased the chances of developing urinary tract infections by 40 times among institutionalized elderly and demands greater attention from the health team.
Educational technology for bathing/hygiene of elders at home: contributions to career knowledge
Authors: Sousa Vitória Lídia Pereira , Moreira Andréa Carvalho Araújo , Fernandes Marília Campos , Silva Maria Adelane Monteiro da , Teixeira Iane Ximenes , Dourado Júnior Francisco Wellington
Published: July 2021

ABSTRACT Objective: to build and validate an educational booklet for bathing and hygiene of elders at home. Methods: a methodological study, developed through data collection in literature and situational diagnosis, booklet construction, material qualification through validation by expert judges (11 nurses) and target audience (30 caregivers). Data were analyzed descriptively. The minimum content validity index of 0.80 was considered. Results: in content and appearance validation, experts assigned Content Validity Index global of 0.92, while for assessment of the material’s suitability, the booklet was classified as “superior”, with an average of 90%. In the validation of caregivers, the overall Content Validity Index was 1.0. Conclusion: the booklet was successfully validated and can be considered in the context of health education and collaborate with an adequate and safe practice of bathing and hygiene of elders at home.
Olive oil: a review on the identity and quality of olive oils produced in Brazil
Authors: Filoda Paula Freitas , Chaves Fabio Clasen , Hoffmann Jessica Fernanda , Rombaldi Cesar Valmor
Published: July 2021

Abstract The sensory quality of olive oils is influenced by the diversity and concentration of volatile and non-volatile compounds that vary according to cultivar, and edaphic, climatic, and cultivation conditions, which allows for establishing the origin of the product. In addition, since this crop has been recently introduced in Brazil, little is known about the performance of cultivars in this region, where investments in this activity have been made. Thus, relevant aspects about the chemical and sensory quality of olive oils are presented and discussed, as well as how these aspects influence the identity of the product.
Acometimento vascular na doença de Behçet: o processo imunopatológico
Authors: Vargas Raquelle Machado de , Cruz Maria Luiza Nunes da , Giarllarielli Maria Paula Hashimoto , Sano Beatriz Mota , Silva Geovana Idelfoncio da , Zoccal Karina Furlani , Tefé-Silva Cristiane
Published: July 2021

Resumo A doença de Behçet constitui uma forma rara de vasculite sistêmica, que acomete de pequenos a grandes vasos. É caracterizada por manifestações mucocutâneas, pulmonares, cardiovasculares, gastrointestinais e neurológicas. Sua apresentação clínica é bastante ampla, variando de casos mais brandos a casos graves, com acometimento multissistêmico, caracteristicamente com exacerbações e remissões. Suas causas ainda são desconhecidas; entretanto, há evidências genéticas, ambientais e imunológicas, como a associação com o alelo HLA-B51. Todas essas, em conjunto, apontam para um processo imunopatológico anormal, com ativação de células da imunidade inata e adaptativa, como as células natural killer, neutrófilos e células T, que geram padrões de respostas e citocinas específicos capazes de gerar mediadores que podem lesionar e inflamar o sistema vascular, resultando em oclusões venosas, arteriais e/ou formação de aneurismas.
Genetic diversity in two threatened species of guitarfish (Elasmobranchii: Rhinobatidae) from the Brazilian and Argentinian coasts: an alert for conservation
Authors: Cruz Vanessa P. , Adachi Aisni M.C. L. , Oliveira Pablo H. , Ribeiro Giovana S. , Paim Fabilene G. , Souza Bruno C. , Rodrigues Alexandre S.F. , Vianna Marcelo , Delpiani Sergio M. , Díaz de Astarloa Juan Martín , Rotundo Matheus M. , Mendonça Fernando F. , Oliveira Claudio , Lessa Rosangela P. , Foresti Fausto
Published: July 2021

Abstract The guitarfishes Pseudobatos horkelii and Pseudobatos percellens meet the criteria for threatened status as Critically Endangered (CR) and Endangered (EN), respectively. Both species occur in the Southern Atlantic Ocean. Considering the lack of data on the genetic structure of these species, the present study evaluated the genetic variability and population structure of the P. horkelii and P. percellens in the southern region of Brazil and the northern coast of Argentina, based on sequences of mitochondrial DNA, Control Region (D-loop). Samples of P. horkelii (n = 135) were analyzed in six localities situated in Northern Argentina, along the Brazilian states’ coast. The mean of nucleotide diversity was 0.0053, the ΦST was 0.4277 and demographic analysis of P. horkelii suggests the existence of stability of the populations, with D = 0.9929, FS = 2.0155, SSD = 0.0817, R = 0.2153. In P. percellens (n = 101) were analyzed from six Brazilian localities along the coast of Santa Catarina, Paraná, and São Paulo. The mean nucleotide diversity was 0.0014 and ΦST value of 0.2921, the demographic analysis indicates a high migration rate of P. percellens among the localities evaluated, with D = 0.5222, FS = 0.3528, SSD = 0.01785, R = 0.3890.
Effect of fines content on onset of internal instability and suffusion of sand mixtures
Authors: Prasomsri J. , Shire T. , Takahashi A.
Published: July 2021

Internal instability or suffusion is one of the mechanisms of internal erosion in cohesionless soils, which is described by the loss of integrity of soil by seepage flow and is associated with the migration of finer particles. The contribution of the non-plastic finer fraction in a material is a key factor governing internal instability susceptibility. This study presents the experimental investigation of the influence of the fines content on the onset of internal instability of gap-graded sands using a pressure-controlled triaxial erosion device. The results indicate that the finer fraction in the soil has a significant influence on the hydraulic gradient at the onset of erosion. The underfilled soil with fines content less than 30% is vulnerable to suffusion at a relatively small hydraulic gradient. The transitional soil, whose fines content is between 30 and 35%, also exhibits suffusion, but the erosion onset hydraulic gradient significantly increases with increasing fines content. The overfilled soil with fines content larger than 35% exhibits suffosion or internal stability at a larger hydraulic gradient. The results also highlight the necessity of the multiple indices, such as mass loss, volumetric change and change in permeability, in evaluating the onset of various instability phenomena.
Tachycardia-polyuria syndrome after swan-ganz catheterization in liver transplant patient - A case report -
Authors: Heo Sang-Kwon , Kim Kyoung-Sun , Lee Jeong-Hyun , Song Jun-Gol
Published: July 2021

Background: Tachycardia-polyuria syndrome is characterized by polyuria occurring because of tachycardia with a heart rate of ≥ 120 beats/min lasting ≥ 30 min. We report such a case occurring after swan-ganz catheterization.Case: A 41-year-old male was scheduled for living-donor liver transplantation. After general anesthesia, atrial fibrillation occurred during swan-ganz catheterization, and polyuria developed 1 h later. During the anhepatic phase, the patient’s heart rate increased further, and cardioversion was performed. After a normal sinus rhythm was achieved, the patient’s urine output returned to normal.Conclusions: The patient’s polyuria seemed related to the iatrogenic atrial fibrillation occurring during swan-ganz catheterization. Although we did not measure atrial natriuretic peptide, an increase in its concentration may have been the main mechanism of polyuria, as natriuresis was observed.
The Structural Relationship among Restaurant’s Self-service Usability, Customer Satisfaction, e-Wom, and Brand Commitment: Moderating role of Self-service Type
Authors:   The Tourism Sciences Society Of Korea, Park Ji-Won , Lee Hyung-Ryong
Published: July 2021

The trend of contact-free consumption is expected to continue into the future along with the COVID-19 pandemic, especially in the food service industry. This paper aims to find the structural relationship among restaurant self-service usability, customer satisfaction, e-Wom, and brand commitment. The samples mainly targeted consumers who have experienced kiosk and mobile food ordering apps within the latest month in Korea. Hypotheses were tested through Confirmatory factor analysis, Structural equation modeling, and Multi-group analysis to investigate the effect of self-service usability, its contribution to customer satisfaction and e-Wom. The results are summarized as follows: The four factors of self-service usability (ease of use, accessibility, learnability, and scalability) had a significantly positive effect on customer satisfaction. However, only two factors (accessibility and scalability) had a significantly positive effect on e-Wom. Additional findings from this study demonstrate the role of moderating variables. The result implies that not only kiosk user’s satisfaction, but also mobile app user’s e-Wom is practically important and it has to be preceded by in order to expect customer’s brand commitment. Overall, results of this study suggest that different marketing strategies will be needed for customers’ self-service adoption and successful experience with usability. This study draws scholarly interest by providing useful information about which of self-service usability’s factor should be preceded by strengthening high levels of customer satisfaction and e-Wom. Based on the analysis results, this study proposes practical implications on how to carry the customer’s brand commitment out effectively by using self-service, and suggests operational decision making tips for considering self-service marketing strategies especially in food service industry.
Travel Service Satisfaction, Happiness and the Revisit Intention based on the Smart Tourism Technologies
Authors:   The Tourism Sciences Society Of Korea, Park Jae-Eun , Lee Eun-Ji , Chung Nam-Ho , Koo Chul-Mo
Published: July 2021

With the advent of the 4th Industrial Revolution, the integration of technology and tourism in the tourism industry can be easily seen. Smart tourism can be understood as tourism that connects to the Internet at anytime, anywhere, and obtains and utilizes necessary information for travel using technology and smart devices. This study considered accessibility, informativeness, interaction, and personalization as attributes of smart tourism technology (STTs). It verified the impact of these attributes on tourists' cognitive (travel service satisfaction) and affective evaluations (tourist happiness) and, by extension, behavioral changes (intention to revisit). This study was conducted using on-site surveys of foreign tourists at tourist attractions in Seoul and was analyzed based on 191 valid responses. As a result of this research, the STTs informativeness, interaction, and personalization impact tourists’ satisfaction. Additionally, it was verified that service satisfaction and user happiness had a positive effect on intention to revisit. Based on the results of the data analysis, this study presents the following academic and practical implications. First, theoretically, we explored the attributes of smart tourism technology in response to the social interest in technology and further explained tourists’ behavioral change process based on prior research and the hierarchy of effects of the ABC model of attitude. In practice, tourism developers were given insight into the quality of tourism information before, during, and after tourism and service design.
Priority Analysis of the Integrated Resort Impact Assessment indicators using AHP
Authors:   The Tourism Sciences Society Of Korea, Bong Mi-Hee , Seo Won-Seok
Published: July 2021

The purpose of this study is to derive priority and relative importance of each evaluation attribute for the integrated resort impact evaluation. First, we examine the concept, characteristics, and current status of the integrated resort. Second, we review previous studies of the factors influencing complex resorts. Third, we derive the priority and relative importance of each attribute of the integrated resort impact assessment based on expert surveys targeting experts in tourism and integrated resorts. Fourth, we present the implications for sustainable growth of domestic integrated resorts based on the research results. In this study, weights were derived based on the method of stratification analysis. First, the integrated resort impact evaluation index was classified hierarchically. Second, input data was collected through pairwise comparison. Third, the relative weight of the pairwise comparison elements were estimated using the eigenvalue method. Fourth, the weights of the evaluation items were finally derived by synthesizing the relative weights of the decision-making factors. As a result of the analysis, the most important factor for evaluating the impact of the integrated resort is the economic impact evaluation, followed by tourism impact assessment, social and cultural impact assessment, and environmental impact assessment. Priorities for each detailed indicator were also derived and presented. For sustainable growth of the integrated resort in the future, it is necessary to consider the introduction of the integrated resort impact assessment, because it can be one of the tools that can enable sustainable growth within the region, such as maximizing the positive impact that it may have and minimizing or eliminating the negative impact that may occur. In this respect, the results of this study are expected to contribute to companies that develop and operate integrated resorts, as well as policy makers and government officials who want to promote related policies.
Optimization of Silica Extraction from Diatomaceous Earth using the Central Composite Design of Response Surface Methodology
Authors: Izevbekhai Oisaemi U. , Gitari Wilson M. , Tavengwa Nikita T.
Published: July 2021

ABSTRACT This work evaluated the extraction efficiency of silica from diatomaceous earth (DE) by conventional solvent extraction (CSE) and ultrasound-assisted extraction (UAE) under basic and acidic (HCl) conditions utilizing response surface methodology (RSM). A common statistical model was used to get the best percentage yield and percentage purity using RSM. Experimental parameters such as stirring time, NaOH concentration (for CSE), sonication time, NaOH/HCl concentration, cycle and amplitude (for UAE methods) were optimized using central composite design (CCD). The analytical responses, that is, percentage yield and percentage purity, were analyzed using ANOVA and regression analysis. The linear coefficient of determination, R2, was high and precise. The overall yield and purity were highest for the UAE method under acid condition (pH 1-2, approximately), making it the most effective silica extraction method from DE. For this method, the optimal conditions for extracting Si from DE were 2 h of sonication, 220 mL of 2.82 M HCl as a leaching/extracting medium, 0.524 cycles and 72.6 % of amplitude. Under these conditions, 82 % of silica was yielded with a purity of about 95 %. The experimental results indicate that high-quality silica can be produced from DE in high yield so that DE can be an alternative silica source. Keywords: Diatomaceous earth, silica, response surface methodology, ultrasound-assisted extraction, conventional solvent extraction.
Maxillofacial Radiology 190
Authors: Walters Jaco
Published: July 2021

The pantomograph (Figure 1) shows an incidental radiopaque mass in the 3rd quadrant. 3D MIP (Figure 2) and a sagittal CBCT slice (Figure 3) indicates an impaction of the maxillary central incisor. A reconstructed PAN (Figure 4) demonstrates a retained 53. With intraoral radiographs (Figure 5 and 6) demonstrating multiple miniature tooth-like structures. These are characteristic representations of compound odontomas.
Die verband tussen ouerskapspraktyke en die aggressiewe gedrag van leerlinge met matige intellektuele disfunksie
Authors: Cockrell P , Moen M
Published: July 2021

Leerlinge met matige intellektuele disfunksie (MID) is 'n kohort leerlinge wie se hoë aggressievlakke onderrig in skole ernstig bemoeilik. Dergelike leerlinge het 'n gemiddelde intelligensiekwosiënt (IK) van 55 tot 70 en, vergeleke met leerlinge sonder MID, het hul 'n agterstand in verstandelike ontwikkeling van twee tot agt jaar. Hierdie leerlinge het 'n vier keer hoër risiko om aggressiewe gedragsuitvalle te openbaar, wat vir onderwysers en belanghebbendes groot uitdagings bied. Die doel van hierdie studie was om te bepaal of, en indien wel, in watter mate, die ouerskapspraktyke van die ouers van dergelike leerlinge bydra tot hulle aggressiewe gedragsuitvalle. Die hoofbevinding van hierdie studie is dat die aggressiewe gedragsuitvalle in die skool 'n simptoom is van dieperliggende probleme, wat die gevolg is van 'n sameloop van negatiewe ouerskapspraktyke, emosionele verwaarlosing en ingeperkte vermoëns van leerlinge met MID om uitdagings toepaslik te hanteer. Negatiewe ouerskapspraktyke het die volgende ingesluit: aggressiewe gedrag, onbetrokkenheid, permissiewe praktyke, gebrekkige kommunikasie en inkonsekwente dissipline met min ondersteuning, warmte en empatie. Die leerlinge het gevoel dat hulle ouers emosioneel en fisies afwesig was, wat gelei het tot 'n gevoel van emosionele verwaarlosing, verwerping, verlies en 'n gebrek aan ondersteuning. Opeengestapelde ("accumulative") negatiewe faktore soos gesinsverbrokkeling en problematiese binding het ook bygedra tot hulle aggressiewe gedragsuitvalle. Hierdie leerlinge het nie die ondersteuning gehad om uitdagende gebeure te verwerk nie - hulle moes dit self verwerk en is met onverwerkte emosies aan hul lot oorgelaat.
Wysgerige kanttekeninge oor enkele aspekte van lewe en dood
Authors: Strauss D
Published: July 2021

Teen die einde van die 18de eeu is virusse ontdek en getipeer as skynbare oorgangsentiteite tussen nielewende en lewende dinge. Dit het aanleiding tot verskeie (wysgerige) grensprobleme gegee. Aan die een kant word aandag geskenk aan die vermeende gelyktydige ontstaan van proteïene en kernsuur en aan die ander kant word besin oor die vraag wat 'n plant is. Simpson en Von Bertalanffy word betrek om te beklemtoon dat molekules nie lééf nie. Dit open die weg na enkele gedagtes oor die aard van stoflike entiteite. Vervolgens word aandag geskenk aan die grensvraag na die oomblik van die dood en afgesluit met enkele juridiese oorwegings.
The orthodontist's views regarding academic education in cleft lip and palate as well as craniofacial deformities in South Africa
Authors: Ghabrial Emad , Bütow Kurt-W
Published: July 2021

Orthodontists are essential members of a craniofacial team (American Cleft Palate-Craniofacial Association Team Standards Committee).1 Because cleft lip/palate (CLP) and craniofacial deformities (CFD) vary in severity and facial growth patterns, treatment is complex and lengthy and requires collaboration among different disciplines. Consequently, orthodontists need specialised training in this field to reach the treatment goals of good facial growth, aesthetically acceptable appearance, and dental occlusion. Therefore, it becomes increasingly important to provide adequate training for orthodontists, so they can not only provide efficient treatment but can also undertake a leadership role in the field. To obtain information regarding:• the CLP and CFD academic education of orthodontists the professional services that orthodontists offer to CLP and CFD patients• the educational and training needs of orthodontists in this field A 54-item online survey to collect quantitative data was conducted by means of an interview, using a randomised sample of orthodontists attending the annual scientific conference of the South African Society of Orthodontics. The questionnaire was completed by 53 orthodontists, 54.6% of whom had more than 10 years of professional experience. Of the respondents, 84.8% experienced some clinical exposure in this field during their postgraduate education. Treatment for CLP and CFD patients was offered by 92% of the professionals, but only 21.7% had high confidence in their expertise in treating CLP/CFD patients. Of the respondents, 88% agreed there was a need to improve CLP and CFD education, and the majority recommended fellowship training and certified courses. The rest suggested continuing-education workshops. Most of the orthodontists provided treatment for both CLP and CFD patients despite some of them lacking confidence in treating such cases. The majority agreed that there is a strong need to establish an educational strategy to meet the needs of orthodontists who treat CLP and CFD patients. The respondents suggested that programmes such as fellowship training, degree couses, certified courses, and continuing education workshops could be used.
Artistic Communication in the Modern Exhibition Space of Siberia
Authors: Astakhov Oleg Yu.
Published: July 2021

The article reveals the challenges of artistic communication in the organisation of modern exhibition space. Art exhibitions demonstrate the synthesis of creative practices implemented with the use of a wide range of expositional forms and means of expression. The paper studies the features of the implementation of artistic communication in the exhibition space and analyses theoretical foundations of communication tasks, which are taken into account when organising the exhibition space. Based on contemporary acting exhibition projects, including regional exhibitions (Az. Art. Siberia – 2019), the authors of the article reveal the specific features of artistic communication, concluding that representation of works of art is implementation of the intellectual and creative relationship of the author and the recipient in broadcasting artistic information containing a certain attitude to the world, which forms the conceptual content of art and its value content
O Processo de Empresificação de Cooperativas Populares: estudo de caso em uma cooperativa de crédito ## The Managerialisation Process of Popular Cooperatives: a case study of a credit cooperative
Authors: Calgaro Rosane , Ferreira Fabio Vizeu , Seifert Junior Rene Eugenio
Published: July 2021

Este trabalho avança o corpo de conhecimento sobre o processo de empresificação de cooperativas populares no contexto brasileiro com base no estudo de caso de uma cooperativa de crédito paranaense.  O estudo analisa a trajetória da cooperativa no período de 1995 a 2020, a partir da análise de documentos e entrevistas com associados e funcionários da primeira e da segunda década de atividade. A análise dos dados permitiu reconhecer três forças principais responsáveis pelo processo de empresificação e alinhamento à lógica gerencialista na cooperativa estudada: a natureza desenvolvimentista do contexto técnico em que foi constituída; o crescimento organizacional que determinou a passagem da base de serviços à cooperativa central; e a busca por maiores níveis de eficiência técnica. Os resultados do estudo avançam a base de reflexão crítica sobre o fenômeno da empresificação de cooperativas populares, indicando possibilidade e caminhos de resistência para as cooperativas que busquem se manter fiéis a seus propósitos populares originais. AbstractThis study advances the body of knowledge about the process whereby popular cooperatives align themselves with the tenets of managerialism. It is based on a case study of a credit cooperative in Paraná, Brazil.
Atividades de Controladoria em Organizações da Sociedade Civil: um estudo multicaso ## Controllership Activities in Civil Society Organizations: a multi-case study
Authors: Rodrigues Tainara Pereira , Santos José Glauber Cavalcante Dos
Published: July 2021

Esta pesquisa objetiva caracterizar as atividades de controladoria executadas em Organizações da Sociedade Civil (OSC). Para tanto, foram levantadas as principais atividades atribuídas à controladoria consideradas na literatura. O estudo foi delineado a partir de um estudo de casos múltiplos com seis organizações selecionadas no Mapa das OSC do Instituto de Pesquisa Econômica Aplicada (IPEA, 2020) sediadas no município de Fortaleza (CE). Os dados foram obtidos por meio de entrevistas e questionários, observações in loco e coleta de dados secundários nos websites dessas organizações investigadas. As atividades mais frequentes executadas correspondem às funções de planejamento e acompanhamento. Destacam-se atividades de elaboração de planos, orçamentos e previsões, além de acompanhamento das ações planejadas e controle interno. As atividades menos frequentes são ligadas à função de avaliação. A controladoria foi considerada importante pelos respondentes, mas metade das organizações não possui uma área formalizada. Todas as atividades avaliadas foram consideradas relevantes, a despeito da baixa frequência de execução, contrassenso que pode sugerir não priorização das atividades de controladoria ou existência de limitações estruturais e financeiras.
Factors Influencing the Students’ Choices towards Online Food Delivery
Authors: Mohamed Rosli Siti Umairah , Abu Lani Nor Farhana
Published: July 2021

New world today has come out with many technology in helping us to ease our daily live. This includes creating a new system in e –commerce. Among the latest upgraded technology that arise during these days are the ability to use smart phone for buying and purchasing purpose. Like many other industries, food industry is currently effected with massive development of systems in providing better services and quality in terms of food ordering, selecting and delivery. The purpose of this study is to determine the factors effecting the students’ choices towards online food delivery. The quantitative research method was chosen and the questionnaire was used to collect data as a survey method. Structured questionnaire was used in this study. There were 265 respondents who were randomly included in the questionnaires conducted by the researcher. The data was analyzed using Google form and questionnaire. The data collected was analyzed by using Statistical Packages for Social Science Version 25 (SPSS Version 25) software based on descriptive analysis, reliability analysis, and correlation analysis. As for the result, all of the independent variables (attitudes, time saving, and promotion) that had been studied in this research had significant relationships towards dependent variable (consumer behavior). The result of the research objectives which is to examine the relationship between attitudes, time saving and promotion that influencing consumer behavior towards Online Food Delivery.
Analysis of Production Factors for The Rubber Smallholder Sector in Malaysia
Authors: Ramli Norlee , Samat Oswatun , Ismail Mohd Khairi , Ahmad Shaupi Nor Shuhada
Published: July 2021

The production of natural rubber in Malaysia is primarily dominated by smallholders representing almost 95% of the total rubber plantation, while commercial estates constitute the remainder. The natural rubber industry is an integral part of the Malaysian economy, with 2.6% of with the total contribution of exports valued at more than RM20 billion annually. Therefore, the three key inputs that affect the productivity of smallholders in all states throughout Malaysia should be critically explored There is limited literature on the production of rubber by smallholders. The labour consumption, land area and adherence to agronomic practices are the main inputs and variables in this study. The Ordinary Least Square (OLS) was used to analyse the correlation of each input with rubber production by referring to the concept of the production function. The results discovered that 96% of rubber production yields are explained by independent variables consisting of labour, plantation area, weeding and cultivating activities. Furthermore, the total plantation area and adherence to agronomic practices positively affect total rubber production, while inefficient use of labor negatively affects total rubber production
Physicomechanical Properties of Epoxyurethane Biocomposites Strengthened with Hemp Wood Core
Authors: Samoilenko Tetian , Yashchenko Larysa , Yarova Natalia , Babich Oleh , Brovko Oleksandr
Published: July 2021

Hemp wood core (HWC) filled Si-containing epoxyurethane biocomposites, in which diane epoxy resin was replaced with epoxidized soybean oil (ESO), were obtained. It was shown that the tensile strength of ESO-containing polymer was higher, and the flexural strength was lower than those of original polymer. HWC was especially effective strengthening filler for modified epoxyurethanes, because in that case mechanical properties of composites were higher than those of unfilled polymer matrices. Particularly, flexural and tensile strength of unfilled epoxyurethane with maximum content of ESO were 8.1 and 6.8 MPa respectively, while in corresponding composite they reached 17.3 and 15.7 MPa.
Recyclization reactions of 8,10-dibromocamphor with Grignard and organolithium compounds
Authors: Verenka Ihor , Gorichko Marian
Published: July 2021

Grignard reagents and organolithium compounds react with 8,10-dibromocamphor to afford substituted 1-methyl-2-methylenebicyclo[3.2.0]heptanes. Recyclization proceeds via intramolecular enolate alkylation and Grob fragmentation of the reaction intermediates. All compounds have been characterized by 1H, 13C and 19F NMR spectroscopy and their chemical composition proved by HRMS analyses. The relative spatial arrangement of substituents in the molecule of (1-methyl-2-methylenebicyclo[3.2.0]heptan-6-yl)diphenylmethanol was studied by NOESY experiments.