bluuebunny/crossref_metadata_2025 huggingface dataset:
Fabrication and evaluation of mounted harvesting machine for sugarcane
Authors: Eldidamony Mohamed , Shal Ahmed El
Published: February 2021

Sugarcane is one of the important sugar crops in the world that depends on it in many industries, so we have fabricated and evaluated a machine for harvesting sugarcane to saves time, labors and costs necessary for harvesting, which is reflected in production and reduces costs. This harvester was designed for mounted on a small tractor and the single-row machine harvesting meets the functional requirements of the physical properties of the sugarcane. The performance of the harvester machine was evaluated on one shapes of cutter disc, three forward speeds and three cutter disc speeds. The results demonstrated that the average forward speed of 5 km/h, the average cutter disc speed 2000 rpm produced the lowest sugarcane losses while producing the highest power requirements and operating cost than other studied forward speeds and cutter disc speeds. It turns out that the fabricated mechanical harvester machine did not do major harm to the sugarcane and less than 6.38 % losses. Operating a sugarcane harvesting machine at optimal conditions saves time, labors and costs compared to common methods of manual harvesting.
Fixed point results in ordered bicomplex-valued metric
spaces
Authors: Abdalla Mohamed , He Fuli , Mostefaoui Zahia
Published: February 2021

The purpose of this paper is to state some fixed point theorems in ordered bicomplex valued
metric spaces for generalized rational type contraction mappings. Examples are given to
illustrate the results. Also, some special cases of the established results are deduced as corollaries.
ANALYSIS OF THE CONDITION OF A PIPE FIXED IN A CLAMPING DEVICE
Authors: Afandiyev Emin Musa , Nuriyev Mahammadali Nuraddin
Published: February 2021

Due to the fact that clamping devices are widely used in various industries, the requirements for the operation of such devices are constantly increasing. This is due to an increase in the general requirements for processing accuracy, as well as an increase in the forces acting on the clamped part. The reliability of these devices when working with thin-walled cylindrical parts is of great importance.
Thin-walled cylinders used in mechanical engineering are subject to significant loads. With prolonged exposure to loads from clamping forces, as well as from axial tensile forces, plastic deformations of cylindrical parts occur. In the oil and gas industry, when clamping drill and casing pipes in some areas in the capture zone, stresses exceed the yield strength. Multiple clamping of the pipe will reduce the pipe wall in the gripping area, which causes premature pipe failure. Therefore, increasing the holding capacity of clamping mechanisms is relevant.
Analysis of broken drill pipes, which have been operating in wedge grips for a long time, showed that in most cases the pipes undergo plastic deformation caused by damage to the pipe surface by the teeth of the ram. To clarify the actual conditions of loading the pipe and the possibilities of increasing the capacity of the clamping devices, studies of the contact pressures in the clamping zone were carried out.
A new pipe clamping chuck is also presented, which provides a sufficiently high reliability of fastening of cylindrical parts.
COMPARATOR IDENTIFICATION IN THE CONDITIONS OF BIFUZZY INITIAL DATA
Authors: Raskin Lev , Sira Oksana , Katkova Tetiana
Published: February 2021

When solving a large number of problems in the study of complex systems, it becomes necessary to establish a relationship between a variable that sets the level of efficiency of the system's functioning and a set of other variables that determine the state of the system or the conditions of its operation. To solve this problem, the methods of regression analysis are traditionally used, the application of which in many real situations turns out to be impossible due to the lack of the possibility of direct measurement of the explained variable. However, if the totality of the results of the experiments performed can be ranked, for example, in descending order, thus forming a system of inequalities, the problem can be presented in such a way as to determine the coefficients of the regression equation in accordance with the following requirement. It is necessary that the results of calculating the explained variable using the resulting regression equation satisfy the formed system of inequalities. This task is called the comparator identification task.
The paper proposes a method for solving the problem of comparator identification in conditions of fuzzy initial data. A mathematical model is introduced to describe the membership functions of fuzzy parameters of the problem based on functions (L–R) – type. The problem is reduced to a system of linear algebraic equations with fuzzy variables.
The analytical relationships required for the formation of a quality criterion for solving the problem of comparator identification in conditions of fuzzy initial data are obtained. As a result, a criterion for the effectiveness of the solution is proposed, based on the calculation of membership functions of the results of experiments, and the transformation of the problem to a standard problem of linear programming is shown. The desired result is achieved by solving a quadratic mathematical programming problem with a linear constraint. The proposed method is generalized to the case when the fuzzy initial data are given bifuzzy
ANALYSIS OF BEHAVIOR IN THE USE OF PLUG-IN HYBRID ELECTRIC VEHICLE AND HYBRID ELECTRIC VEHICLE IN THE TROPICS
Authors: Heryana Ghany , Sumarsono Danardono A. , Adhitya Mohammad , Siregar Rolan , Nazaruddin Nazaruddin , Zainuri Fuad , Prasetya Sonki
Published: February 2021

This research aims to determine the pattern of Plug-In Hybrid Electric Vehicle (PHEV) usage and fuel consumption for the Jakarta metropolitan area, which includes the cities of Depok, Bogor, Tangerang, Bekasi, and Jakarta itself. Tests were carried out for approximately three months, with regular use. Other types of vehicles for comparison are the Internal Combustion Engine (ICE) and Hybrid Electric Vehicle (HEV) units. Fuel consumption data and vehicle usage patterns are acquired from data loggers. Economic studies are carried out in a simulation that involves the price of a vehicle, a battery, maintenance costs, and fuel prices. The results show that the best PHEV fuel consumption is for the range of 55–80 km, which is 35–40 km/liter. When compared with HEV, PHEV fuel consumption is 30 % more efficient. HEV's best fuel consumption is 22 km/liter. The ICE is far behind with 11 km/liter. However, looking at the economic side, it can be concluded that the price of PHEV is still challenging to reach for the middle class. PHEV is still classified as a luxury car for Indonesia. Assuming the amount of fuel is IDR 9,850/liter, and the vehicle service life is set at ten years, the energy cost for PHEV is around IDR 4,400–IDR 6,000/km. It is higher compare with the energy cost for a conventional car that is around IDR 3,400–IDR 3,900/km. PHEV buyers must receive incentive support from the government, not only at the time of purchase (zero tax) but also for maintenance costs and battery replacement. Indonesia has long experience in manufacturing ICE vehicles. Opening an electric vehicle industry is a strategic solution to reduce the price of these vehicles. The import tax for vehicles in Indonesia is quite high
SATURATION OF GLASS PARTICLES WITH METAL DURING SINTERING OF A COMPOSITE MATERIAL OF THE IRON–CAST IRON–GLASS SYSTEM
Authors: Jabbarov Tahir Gaffar , Aslanov Jamaladdin Nuraddin , Shahmarova Rafiga Sakhavat
Published: February 2021

Sintering of multicomponent systems is characterized by a number of features, consisting in the fact that sintering of dissimilar materials is a complex eutectic process. Along with self-diffusion, which causes the transfer of mass to the contact area of the particles, there is mutual diffusion, which ensures the homogenization of the composition by equalizing the concentrations of unlike atoms within the sample. Under conditions of limited solubility or complete insolubility of the components, sintering of the system is complicated by the isolation of homogeneous particles from mutual contact, hindering self-diffusion and thereby worsening the sintering conditions.
The saturation of particles of vacuum glass brand S88–5 (GOST 11.027.010–75, Russia) and glass “Pyrex” (TS, Russia), which are part of iron and “iron-cast iron glass” materials, depending on the sintering temperature, has been studied.
To improve the interfacial interaction, and, consequently, to increase the mechanical and tribotechnical properties of powdered iron-glass materials, the effect of the glass melting temperature on the saturation of glass with metal was investigated. The dependences of the content of base metal and silicon ions in glass on the sintering temperature are plotted. The effect of the glass melting temperature on increasing the saturation of glass with metal is predicted.
The saturation of the glass with the base metal depends on the viscosity of the glass at sintering temperatures and is accompanied by an increase in microhardness and refractive indices up to 1.2 times compared to the initial state of the glass.
The microhardness of particles of vacuum glass of grade S88-5 after sintering of metal-glass samples increases noticeably than in samples with Pyrex glass.
When sintering "iron-cast iron-glass" materials, the metal base is saturated with silicon, which leads to an increase in the hardness of iron up to 1.8 times
Virtual Teaching and Learning: The Sustainable Tools in Digitalization of Education
Authors: Omole Olutayo T.
Published: February 2021

Virtual teaching and learning have been part of the integration of the use of technological tools in this digital age and new normal. The formation of a knowledge society and the digital storage of development of modern civilization culture still remain a continuous process in the era of virtual teaching and learning within the education system especially during this global pandemic lockdown. This article reviews the use of virtual teaching and learning as techniques to improve digitalization in the use of new e-tools in teaching and learning in Nigeria. To achieve this, the concept of virtual teaching and learning is reviewed with the intention of looking at its features in digital education. The benefits of virtual teaching and learning are many which include opportunity for timely and distance education, better interactions, easily accessible to learners; the lesson can be easily tracked and recorded. It was concluded that virtual teaching and learning had great significant impacts on digital education and proved to be a vital and sustainable tool in digitalization of education. This paper recommends that the government of Nigeria should improve on adequate provision of infrastructures which will aid the use of virtual teaching and learning at all levels of education system.
Reinventing New Learning Model through Cultural Values and Transformational Education in a Digital Age
Authors: Ekpenyong Maria
Published: February 2021

For some decades now, Nigeria’s socio-economic and educational crisis has deepened in every sphere of life, a predisposition attributable to unprecedented challenges from new for technologies and interconnectivity. In existence now is a system of education that is no longer relevant globally, which translates to a paradigm shift in ways students want to learn and how teachers want to instruct. This has resulted in uncertainties of knowledge dissemination, transfer and sustainability. This paper holds the believe strongly that revisiting cultural and values-based education and adjustment to the digitalization process will lead to inclusive learning without boundary, development and transformation in human values. The main thrust of the paper is to re-design, using the qualitative approach, the curricular and courses to reflect activities for the mind, character, and technical skills formation, on a conceptualised tripartite of the three ‘’H’’: Head, Heart and Hands for online education for positive changes. It is, therefore, expedient to state that the outcome of new models, education for positive change is attainable by using a digitalized formula that synthesizes the head, the hands and the heart. The paper concludes that an induced change in mind-set and borderless education for all will liberate the world from digital uncertainties. Thus, the paper recommends youth-centred real-life application project-based learning and education in human values for the transformation of society. This will help reduce the rigidity of the formal method and a wide range of resource requirements, thereby making it more effective and affordable.
Factors Affecting Home Delivery among Women Living in Remote Areas of Rural Zambia: A Cross-Sectional, Mixed-Methods Analysis
Authors: Musonda Ireen Chola Mwape
Published: February 2021

Luapula Province has the highest maternal mortality and one of the lowest facility-based births in Zambia. The distance to facilities limits facility-based births for women in rural areas. In 2013, the government incorporated maternity homes into the health system at the community level to increase facility-based births and reduce maternal mortality. Despite the policy to stopping traditional birth attendants from conducting deliveries at home and encouraging all women to give birth at the health facility under skilled care, many women still give birth at home. An exploratory cross section survey was used to gather data by conducting structured interviews with 50 women of childbearing age who had a recent or previous home delivery. The following factors were found to be associated with home deliveries in surrounding villages in kashikishi; abrupt onset/precipitate labor, long distance/transport difficulties to reach the nearest health facility, having had successful HD, poverty/low income and gender though having a small percentage. Parity in which the majority were multiparas’ women, attitude was also associated with home deliveries and other unforeseen circumstances such as a funeral and being alone at home at the onset of labour.
Analysis of Magnitude and Frequency of Floods in the Damanganga Basin: Western India
Authors: Anwat Vitthal , Hire Pramodkumar , Pawar Uttam , Gunjal Rajendra
Published: February 2021

Flood Frequency Analysis (FFA) method was introduced by Fuller in 1914 to understand the magnitude and frequency of floods. The present study is carried out using the two most widely accepted probability distributions for FFA in the world namely, Gumbel Extreme Value type I (GEVI) and Log Pearson type III (LP-III). The Kolmogorov-Smirnov (KS) and Anderson-Darling (AD) methods were used to select the most suitable probability distribution at sites in the Damanganga Basin. Moreover, discharges were estimated for various return periods using GEVI and LP-III. The recurrence interval of the largest peak flood on record (Qmax) is 107 years (at Nanipalsan) and 146 years (at Ozarkhed) as per LP-III. Flood Frequency Curves (FFC) specifies that LP-III is the best-fitted probability distribution for FFA of the Damanganga Basin. Therefore, estimated discharges and return periods by LP-III probability distribution are more reliable and can be used for designing hydraulic structures.
On bounds for convergence rates in combinatorial strong limit theorems and its applications
Authors:   St. Petersburg State University, Frolov Andrei N.
Published: February 2021

We find necessary and sufficient conditions for convergences of series of weighted probabilities of large deviations for combinatorial sums i Xniπn(i), where Xnij is a matrix of order n of independent random variables and (πn(1), πn(2), . . . , πn(n)) is a random permutation with the uniform distribution on the set of permutations of numbers 1, 2, . . . , n, independent with Xnij. We obtain combinatorial variants of results on convergence rates in the strong law of large numbers and the law of the iterated logarithm under conditions closed to optimal ones. We discuss applications to rank statistics.
Minimal velocity surface in the restricted circular Three-Body-Problem
Authors:   St. Petersburg State University, Kholshevnikov Konstantin V. ,   Institute of Applied Astronomy RAS, Titov Vladimir B. ,   St. Petersburg State University
Published: February 2021

In the framework of the restricted circular Three-Body-Problem, the concept of the minimum velocity surface S is introduced, which is a modification of the zero-velocity surface (Hill surface). The existence of Hill surface requires occurrence of the Jacobi integral. The minimum velocity surface, other than the Jacobi integral, requires conservation of the sector velocity of a zero-mass body in the projection on the plane of the main bodies motion. In other words, there must exist one of the three angular momentum integrals. It is shown that this integral exists for a dynamic system obtained after a single averaging of the original system by longitude of the main bodies. Properties of S are investigated. Here is the most significant. The set of possible motions of the zero-mass body bounded by the surface S is compact. As an example the surfaces S for four small moons of Pluto are considered in the framework of the averaged problem Pluto — Charon — small satellite. In all four cases, S represents a topological torus with small cross section, having a circumference in the plane of motion of the main bodies as the center line.
Social marketing for digital transformation: Digitalizing social action for the development of women at risk of exclusion
Authors: Rivera Reynaldo Gustavo , Nogaró Jazmín
Published: February 2021

The third sector, key to social and personal development, needs to evolve and adapt to the technological revolution and digitalization that accelerated due to the global pandemic of COVID-19. Social marketing offers strategies and tools that allow digitalizing processes of female empowerment in contexts of poverty, violence, inequality, and social exclusion. People living in these contexts were the ones that suffered the most from the pandemic, both due to the number of deaths coupled with a lack of access to quality health care, and an increase in interpersonal conflict. The latter aggravated by the mandatory isolation measures imposed by the governments, which made it practically impossible for civil society organizations (CSOs) to intervene. This article presents a case of social marketing oriented to the development, implementation, and evaluation of a people-centered protocol (EduQualitas SM) for the digitalization of empowerment and positive personal development, based on interpersonal relationships and reflexiveness. Through qualitative and quantitative methodologies, the study analyses the impact of its application in a social marketing campaign (Orientación Familiar Digital - OFD) that aimed to improve the quality of life of women in the area of ​​greatest social exclusion in Argentina. The implemented campaign sought to digitalize the formative processes of an international CSO and develop empathy, a fundamental capacity for the quality of life and the reduction of both structural poverty and violence against women. The impact assessment of EduQualitas SM was of a mixed design that included a quasi-experimental intervention without a control group, based on the Argentine adaptation of the Interpersonal Reactivity Index (IRI). This research presents one of the first Latin American cases of CSO digitalization strategies for the development of empathy of women in situations of social exclusion.
Developing the Conceptual Model of Imperfect Competition Impact on Labour Reproduction and the System of Measures Aimed at its State Regulation
Authors: Makekadyrova A. S. , Kravtsevich S. V.
Published: February 2021

Social and labour relations on today’s home labour market are accompanied by adverse social and economic phenomena, such as poverty of working population, inequality in profit distribution, discrimination in remuneration, shadow forms of employment and pay, illegal and interregional migration, labour exploitation, staff deficit and excess, which results in imperfect nature of competition on home labour market. These adverse phenomena are caused, on the one hand, by imperfect indications of competitive behavior of labour market entities, which shows the imperfect type of social and labour relations where parties’ interests are deprived of mutually beneficial basis of their satisfaction and, on the other hand, by imperfect competitive conditions of labour market entities’ functioning, which is manifested in requirements to labour quality. The article studies the key aspects of imperfect competition on home labour market and shows dynamics of its principles statistics. By analyzing and summarizing the dynamics of competitive situations investigated in the regional aspect the authors gained a conceptual model of imperfect competition taking into account its behavioral and institutional aspects. The key social and economic aspects of imperfect competition impact on labour reproduction were researched. On the basis of the provided conclusions the authors put forward certain measures of state regulation of imperfect competition, which could increase workers’ competitiveness and therefore improve the quality of labour reproduction.
The Beach as a Tourist Commercial Use in Mexico. Comparative Study Mazatlán-Acapulco
Authors: Sonda de la Rosa Ricardo , Estolano Cristerna Damayanti , Guerra Mondragón Sandra
Published: February 2021

According to Richard Butler’s theory on the life cycle of tourist destinations, the objective of the research is to make an inventory and compare the tourist businesses between two Mexican destinations. A mixed approach is applied through a case study methodological strategy, addressing qualitative aspects with phenomenological research. Commercial activities, that satisfy the requirements and expectations of tourists on the selected tourist beaches, were recorded, classified and compared. In the results section, the similarities and differences in the tourist businesses carried out are outlined, which will serve as input for future decision-making in matters of innovation and industrial strengthening of the products and services, offered and demanded.
Coronavirus Disease 2019 and Pregnancy
Authors: Cha Hyun-Hwa , Seong Won Joon
Published: February 2021

With the continued fight against coronavirus disease 2019 (COVID-19), new guidelines on its management are emerging; however, information on COVID-19 and pregnancy remains limited. Therefore, this study aimed to review the guidelines of the American College of Obstetricians and Gynecologists, Society for Maternal Fetal Medicine, and Royal College Obstetrics and Gynecology and International Society of Ultrasound in Obstetrics and Gynecology.
Serum Ferritin Concentration in the Early Third Trimester of Pregnancy and Risk of Preterm Birth and Low Birth Weight Based on Gestational Age
Authors: Ahn Tae Gyu , Li Lan , Lee Se Jin , Hu Yoon Hyeon , Kim Chorong , Hwang Jong Yun
Published: February 2021

Objective: Although serum ferritin is considered the best measure of total body iron, with low levels indicating iron deficiency, recent studies have shown that high levels are associated with gestational diabetes, premature birth, and low birth weight. This study aimed to analyze the association between serum ferritin levels in the third trimester of pregnancy and low birth weight and preterm birth.Methods: This study included pregnant women who delivered a single fetus at Kangwon National University Hospital between January 2009 and December 2013 and in whom serum ferritin levels were measured between 28 and 34 weeks of gestation. The association between serum ferritin levels measured in the early third trimester of pregnancy and preterm birth and low birth weight infants was analyzed.Results: A total of 1,079 women fulfilled the study criteria and had their serum ferritin level measured during the third trimester (28–33.9 weeks of gestation) and later delivered at Kangwon National University Hospital. Comparison of the group with serum ferritin levels above the 75th percentile and those below the 25th percentile at the beginning of the third trimester revealed that the incidence of preterm births (<34 weeks of gestation, <37 weeks of gestation) and low birth weight were significantly higher in the group with serum ferritin levels above the 75th percentile than those below the 25th percentile (p<0.05). When variable factors were controlled through multiple regression analysis, the group whose serum ferritin levels were above the 75th percentile at 30–31.9 weeks of gestation had the highest risk of preterm birth before 34 weeks of gestation (adjusted odds ratio [OR], 7.85; 95% confidence interval [CI], 1.32–29.9) and low birth weight (adjusted OR, 6.49; 95% CI, 2.10–20.0).Conclusion: In this study, when serum ferritin was high in the third trimester of pregnancy, it was significantly increased with preterm birth (<34 and 37 weeks) and low birth weight. In particular, when serum ferritin levels were high at 30–31.9 weeks of gestation, the risk of premature birth before 34 weeks and low birth weight was statistically highest.
Buenas prácticas en el cultivo y el procesamiento de la guayaba y la hoja de bijao en el marco de la pandemia de COVID-19
Authors: Prada Forero Luz Esperanza , Deantonio-Florido Leidy Yibeth , Barona Rodríguez Ayda Fernanda , Plazas Ordoñez Mónica Idali , López-González Ximena
Published: February 2021

Para contribuir en la divulgación y el cuidado, AGROSAVIA presenta esta cartilla, basada en los lineamientos generales de las resoluciones 666 del 24 de abril y 796 del 20 de mayo de 2020, emitidas por del Ministerio de Salud y Protección Social de Colombia. Aquí se exponen una serie de recomendaciones sencillas para que trabajadores y productores prevengan el contagio de la Covid-19 y promuevan las buenas prácticas en el cultivo de guayaba y hoja de bijao con calidad e inocuidad, en la transformación y producción de bocadillo veleño y dulce de guayaba, y en el procesamiento del empaque de bijao.
Fast and Accurate Detection of COVID-19 Along With 14 Other Chest Pathologies Using a Multi-Level Classification: Algorithm Development and Validation Study
Authors: Albahli Saleh , Yar Ghulam Nabi Ahmad Hassan
Published: February 2021

Background

COVID-19 has spread very rapidly, and it is important to build a system that can detect it in order to help an overwhelmed health care system. Many research studies on chest diseases rely on the strengths of deep learning techniques. Although some of these studies used state-of-the-art techniques and were able to deliver promising results, these techniques are not very useful if they can detect only one type of disease without detecting the others.

Objective

The main objective of this study was to achieve a fast and more accurate diagnosis of COVID-19. This study proposes a diagnostic technique that classifies COVID-19 x-ray images from normal x-ray images and those specific to 14 other chest diseases.

Methods

In this paper, we propose a novel, multilevel pipeline, based on deep learning models, to detect COVID-19 along with other chest diseases based on x-ray images. This pipeline reduces the burden of a single network to classify a large number of classes. The deep learning models used in this study were pretrained on the ImageNet dataset, and transfer learning was used for fast training. The lungs and heart were segmented from the whole x-ray images and passed onto the first classifier that checks whether the x-ray is normal, COVID-19 affected, or characteristic of another chest disease. If it is neither a COVID-19 x-ray image nor a normal one, then the second classifier comes into action and classifies the image as one of the other 14 diseases.

Results

We show how our model uses state-of-the-art deep neural networks to achieve classification accuracy for COVID-19 along with 14 other chest diseases and normal cases based on x-ray images, which is competitive with currently used state-of-the-art models. Due to the lack of data in some classes such as COVID-19, we applied 10-fold cross-validation through the ResNet50 model. Our classification technique thus achieved an average training accuracy of 96.04% and test accuracy of 92.52% for the first level of classification (ie, 3 classes). For the second level of classification (ie, 14 classes), our technique achieved a maximum training accuracy of 88.52% and test accuracy of 66.634% by using ResNet50. We also found that when all the 16 classes were classified at once, the overall accuracy for COVID-19 detection decreased, which in the case of ResNet50 was 88.92% for training data and 71.905% for test data.

Conclusions

Our proposed pipeline can detect COVID-19 with a higher accuracy along with detecting 14 other chest diseases based on x-ray images. This is achieved by dividing the classification task into multiple steps rather than classifying them collectively.
Subspace Clustering of Physiological Data From Acute Traumatic Brain Injury Patients: Retrospective Analysis Based on the PROTECT III Trial (Preprint)
Authors: Ehsani Sina , Reddy Chandan K , Foreman Brandon , Ratcliff Jonathan , Subbian Vignesh
Published: February 2021

BACKGROUND

With advances in digital health technologies and proliferation of biomedical data in recent years, applications of machine learning in health care and medicine have gained considerable attention. While inpatient settings are equipped to generate rich clinical data from patients, there is a dearth of actionable information that can be used for pursuing secondary research for specific clinical conditions.

OBJECTIVE

This study focused on applying unsupervised machine learning techniques for traumatic brain injury (TBI), which is the leading cause of death and disability among children and adults aged less than 44 years. Specifically, we present a case study to demonstrate the feasibility and applicability of subspace clustering techniques for extracting patterns from data collected from TBI patients.

METHODS

Data for this study were obtained from the Progesterone for Traumatic Brain Injury, Experimental Clinical Treatment–Phase III (PROTECT III) trial, which included a cohort of 882 TBI patients. We applied subspace-clustering methods (density-based, cell-based, and clustering-oriented methods) to this data set and compared the performance of the different clustering methods.

RESULTS

The analyses showed the following three clusters of laboratory physiological data: (1) international normalized ratio (INR), (2) INR, chloride, and creatinine, and (3) hemoglobin and hematocrit. While all subclustering algorithms had a reasonable accuracy in classifying patients by mortality status, the density-based algorithm had a higher F1 score and coverage.

CONCLUSIONS

Clustering approaches serve as an important step for phenotype definition and validation in clinical domains such as TBI, where patient and injury heterogeneity are among the major reasons for failure of clinical trials. The results from this study provide a foundation to develop scalable clustering algorithms for further research and validation.
Covid-19 risk factors and health protocol compliance among mall employees and officers in Yogyakarta
Authors: Dewi Yunita Kemala , Probandari Ari
Published: February 2021

Purpose: This study aimed to analyze risk factors, compliance with health protocols, and the COVID-19 screening test among mall employees at Yogyakarta city, Indonesia.Methods: We analyzed secondary data from a cross-sectional study in Yogyakarta City from May-August 2020. The population was all employees at all malls in Yogyakarta City who participated in the screening rapid test zero survey conducted by the Yogyakarta City Government. Results: Bivariate analysis showed a significant relationship between ensuring proper mask install (OR = 6.33, p = 0.023, 95% CI = 1.03-38.81), applying a minimum distance of > 1 meter when outside home (OR = 27.34, p = 0.001, 95% CI = 3.01-248.32) and applying a minimum distance of > 1 meter when at work (OR = 22.25, p = 0.003, 95% CI = 2,45-201.65) with the reactive COVID-19 results. Multivariate analysis showed the most dominant variable associated with the reactive rapid test results is not keeping a minimum distance of > 1 meter when outside the house with a value of (OR=11.91, p=0.047, 95% CI = 1.03-137.37). Conclusion: The risk factor for Covid-19 for employees and mall staff is physical distancing > 1 meter when outside the house.  The city administration should keep working with mall managers to tighten health protocols in malls and other public areas to prevent Covid-19 transmission.
Preparing new normal: the health literacy assessment on the Covid-19
Authors: Supriyati Supriyati , Angraeny Dian Kurnia , Carissa Theodora Monica , Sheila Abicintha Pramesti , Qisthi Shiefa Annisa , Rianti Maulidiannisa , Roshan Tommy
Published: February 2021

Purpose: This study was aimed to assess the health literacy of the COVID-19 for both of the knowledge level on the Covid-19 and the health protocol compliance by the medical and the non-medical student. Method: This rapid action research was conducted from July-August 2020. Respondents were Indonesian students who voluntarily fulfilled the online questionnaire. A total 208 respondents participated in this study (104 students for each group). Data analysis was performed by using chi square. Furthermore, an animation video was developed and published through Instagram TV as the follow up assessment. Results: The result showed that the medical students had better knowledge (41.8% vs 33.2%, p-value=0.000) and health protocol compliance (6.3% vs 2.4%, p-value=0.049) than the non-medical students. The lowest compliance towards health protocol of the both groups was the physical distancing. Moreover, the health education regarding physical distancing by using animation video had reached audiences. According to the audiences’ comments, the video made them aware of the importance of physical distancing. Conclusion: It was important to improve health literacy for preparing new normal, and it should be developed based on the need assessment.
CONTROVERSIAL ISSUES REGARDING THE EXTENSION OF THE “NEW START” TREATY: CAN THE USA AND RUSSIA PRESERVE EXISTING STRATEGIC ARMS CONTROL?
Authors: Kostic Marina
Published: February 2021

Treaty between the United States of America and the Russian Federation on measures for further reduction and limitation of strategic offensive arms (“New START”) is the last pillar of the arms control regime on which the end of the Cold War and the new world order rested. Its expiration on 5 February 2021 is a top security challenge and indicates a possible new strategic arms race. However, can the United States and Russia still preserve the existing strategic arms control by extending the Treaty for another five years? What are the prospects, the opportunities and obstacles for this extension? What are the most pressing issues USA and Russia face with in order to preserve strategic arms control and are they willing to do so? In order to answer to these research questions author analyses several key issues that are of paramount importance for extension of the New START: nuclear modernization processes, invention of new weapons and emergence of new warfare domains; transparency and verification and broader confidence building measures; missile defence and prompt global strike; tactical nuclear weapons in Europe and Asia; general US-Russia relations which include question of democratic capacity; and broader influence of this Treaty on nuclear non-proliferation regime. By using content and discourse analysis author concludes that, although it is obvious that the extension of the New START would be primarily in favour of Russia and that the USA has not much to gain, the character of strategic stability in the Third Nuclear Age gives reasons to believe that the New START will be extended for another five years.
Aspects of nanomaterials for civil and military applications. Part 1. Origins, characteristics and fabrication methods
Authors: Foltynowicz Zenon , Czajka Bogdan , Maranda Andrzej , Wachowski Leszek
Published: February 2021

The study presents general aspects of highly dispersed nano scale materials including their origins, structure, classification, properties and production methods. In the last two decades, the unique properties and phenomena observed for those material has revolutionized the industry with a significant increase in research and the scope of practical applications of nanotechnology in every aspect of our lives.
Aspects of nanomaterials for civil and military applications. Part 2. Their use and concerns arising from their release into the natural environment
Authors: Foltynowicz Zenon , Czajka Bogdan , Maranda Andrzej , Wachowski Leszek
Published: February 2021

The dynamic development of nanoscience and nanotechnology has led to revolutionary changes in many areas of science and industry, raising a great deal of hope for its potential to solve a wide range of problems of the modern world. Nanomaterials, also referred to as engineered nanoparticles are a product of nanotechnology and, compared to macro-particles, show unique physical, chemical, biological and mechanical properties which significantly extend the range of practical applications. The paper presents the applicability of engineered nanoparticles in the defence industry and concerns related to their release into the environment.
The effective removal of organic and inorganic contaminants using compositions based on zero-valent iron nanoparticles (n-ZVI)
Authors: Foltynowicz Zenon , Maranda Andrzej , Czajka Bogdan , Wachowski Leszek , Sałaciński Tomasz
Published: February 2021

For almost three decades, the engineered nanomaterials (ENMs) due to their reactivity, unique sorption, catalytic, electronic, optical and magnetic properties, have been the subject of extensive research. The results show that these materials can provide a new tool for the remediation of contaminated aquatic ecosystems (surface and groundwater), sediments, soils, military training grounds and waste recycling areas, including electronic waste. In-situ remediation technologies using composites containing metal nanoparticles, mainly zero-valent iron particles (n-ZVI) are becoming more common. The solutions disclosed in numerous publications and patent applications show their applicability, igher effectiveness and lower costs of remediation processes compared to the conventional methods.
RECONSTRUCTION OF PROSTITUTION LAW IN PERSPECTIVE OF RELIGIOUS NORMS AND RENEWAL OF CRIMINAL LAW
Authors: Rofiq Noor Fajari
Published: February 2021

Cases of prostitution as the subject of commercial sex workers (Pekerja Sex Komersial) and sex service users until now are free to undergo without the threat of punishment. Until now, there has been no rule that can punish prostitutes or prostitutes and their customers .then there needs to be a legal reconstruction to achieve a responsive law then need to reform the law to achieve the law in the goal. This research aimed to know and understand the Construction of Prostitution Crimes in the Criminal Code, and The Penal Code Bill is associated with Religious Norms. And Know and understand the Construction of Formulation of Prostitution Crimes that are Ideal and in line with religious norms for Indonesian society, as for normative juridical research methods. The approach used in this writing is a statutory approach or (statute approach) and the analytical and conceptual approach analysis of legal concepts. The results show that it is necessary to explore the concept of philosophical, sociological, and juridical basic values that the state to have legal certainty in society in the Criminal War draft stage. So digging into the philosophical value of the 1st  Pancasila,  The One Godhead (Ketuhanan yang Maha Esa), the five religions apply in Indonesia, including Islam, Christianity, Catholicism, Hindu, Buddha, and Confucian has asserted that the practice of prostitution is legally prohibited.
GOVERNANCE DEVELOPMENT OF PUJON KIDUL'S VILLAGE TOURISM
Authors: Longkul Natcha , Wongpon Wanwisa - , Burana Wepawee , Putri Dara Fitria Melani , Safitri Alliya , Romadhon Ach. Apriyanto
Published: February 2021

This research is a qualitative research study. This research aims to 1) study important factors in the development of the tourist village of Pujon Kidul 2) study sought to answer how Pujon Kidul drives the development of a tourism village. Data were collected using in- depth interviews. Discussions from key informants such as a head of Pujon Kidul village, and non-participatory interviews. The study results show that the governance of the development of the Pujon Kidul tourism village has 4 important factors for development: 1) Human Capital most people in the village receive the training of working skills resulting from the cooperation of nearby villages to have skills in the problems encountered are that the people in the village have an education at the elementary level. Therefore is an obstacle to development 2) Local Participation is led by the head of the village that is the main determinant and determination the people in the village cooperate and follow the leader. 3) Financial Management the development budget of the village is mainly from the capitalization of the people in the village, beginning with the head of the village. 4) Managerial Skill the head of the village has used strategic management by able to manage village development including the development of the agricultural and resources of the village to increase value. Governance of the development of Pujon Kidul tourism village the most encouraging factors are local participation and managerial skills both factors are ready for development. People in the village are active and involved in development. Including the ability of the leader to create a point of sale for the community, planning, decisions, and add value to community resources as for the other two factors is still a management difficulty in human capital, people still lack access to basic education which is an important foundation local governments should emphasize and attend of this and financial management factors lack government support which is considered as the main factor in the development.
Is online learning a win-win solution? The teachers and students’ stories
Authors: Kalanit Febrianus Jordyan , Veronika Sekar Anggi
Published: February 2021

Currently, the learning process in schools and universities has changed due to coronavirus or COVID-19. This paper aims to determine the challenges students face during online teaching and learning activities, how students overcome these challenges and teachers' perceptions of the success of online teaching and learning activities. This narrative research studies participants' stories to determine any unique aspects of the topic being researched. The subjects involved in this study were 165 Vocational High School students and 30 teachers. Data collection techniques using interviews, surveys, and observations. Data analysis was carried out descriptively with data triangulation techniques for further clarification and exploration. Research findings indicate that students have both technical and cognitive challenges. They mostly solve the problems they face by discussing their problems with teachers and peers. Regarding teacher perceptions, good communication and students' affective domain are needed so that online teaching and learning activities are successful.
CIRCUIT TRAINING EFEKTIF MENINGKATKAN VO₂MAX PEMAIN FUTSAL YAYASAN BINA INSANI SUKSES MALANG
Authors: Multazam Ali , Chandra Amiko , Irawan Dimas Sondang , Abdullah Ahmad
Published: February 2021

Konsumsi oksigen maksimal merupakan komponen yang membentuk daya tahan tubuh yang menyebabkan tubuh mampu melakukan kegiatan dalam waktu yang lebih lama dengan tanpa mengalami kelelahan. Circuit training adalah suatu sistem latihan yang dapat memperbaiki secara serempak fitness keseluruhan dari tubuh, yaitu unsur-unsur power, daya tahan, kekuatan, kelincahan, kecepatan, dan komponen kondisi fisik lainnya. Penelitian ini bertujuan untuk menganalisa pengaruh pemberian Circuit Training terhadap peningkatan VO₂max pemain futsal Yayasan Bina Insani Sukses Malang. Metode penelitian ini merupakan penelitian eksperimen semu/Quasi Experiment. Dalam penelitian ini menggunakan desain Pre and Post Test with Control Group Design. yang melibatkan 32 responden dengan teknik pengambilan sampel menggunakan Purposive Sampling. Data yang diperoleh dianalisis dengan menggunakan Mann-Whitney U test Test. Hasil analisis pengukuran VO₂max diukur dengan menggunakan Cooper Test setelah melakukan latihan selama 1 bulan yang dilakukan 3 kali per minggu. Hasil penelitian menunjukkan adanya pengaruh yang signifikan 0,00 (P<0,05) sehingga dapat disimpulan ada pengaruh pemberian Circuit Training terhadap peningkatan VO₂max pemain futsal Yayasan Bina Insani Sukses Malang. Circuit Training dapat digunakan untuk meningkatkan VO₂max.
PENGARUH GERAKAN SHOLAT TERHADAP KETAHANAN (ENDURANCE) OTOT EXTENSOR PUNGGUNG BAWAH PADA MAHASISWA FISIOTERAPI UMM
Authors: Rahmanto Safun , Masrinda Muchammad , Utami Kurnia Putri , Rahim Anita Faradilla , Rosadi Rakhmad
Published: February 2021

Sholat adalah sebuah gerakan yang dimulai dari gerakan berdiri kemudian membungkuk sehingga tangan sampai pada lutut, dilanjutkan dengan berdiri kembali dengan tuma’ninah atau khusuk. Secara teoritis dengan melakukan gerakan sholat dengan frekuensi, intensitas dan durasi dalam latihan kebugaran dapat memberikan dampak yang positif yang dapat dilihat pengaruh terhadap ketahanan otot, terutama otot extensor punggung bawah. Disamping mobilitas otot extensor yang begitu berat dan penting dalam penjagaan postur tubuh, gerakan sholat dapat dijadikan sebagai sebuah alternatif latihan ketahanan  (endurance) otot extensor punggung bawah. Gerakan rukuk yang melawan arak gravitasi bumi yang dilakukan secara berulang–ulang secara fisiologis menjadikan terbentuknya ketahanan (endurance) otot extensor punggung bawah. Jenis penelitian ini bersifat experimental menggunakan metode pre experimental, One Grup pretest-postest Design dengan membandingkan pre dan post-test yang menilai adanya  hubungan sebab akibat antara variabel independen dan dependen dalam jangkan waktu tertentu. Populasi dan subyek dalam penelitian ini adalah mahasiswa Fisioterapi Universitas Muhammadiyah Malang yang berjumlah 38 Mahasiswa, sabjek berumur 17-24 tahun, tidak sakit yang berkaitan dengan posture dan pengukuran dengan metode Sorensen tes untuk mengetahui status endurance otot extensor punggung bawah. Pengambilan endurance otot extensor punggung bawah dengan metode Beiring-Sorensen tes dengan mengunakan alat stopwatch. Data diolah dengan bantuan komputer program SPSS 22 untuk mengetahui pengaruh gerakan sholat terhadap ketahanan (endurance) otot extensor punggung bawah dengan dilakukan uji stastistik parametrik dengan metode uji t berpasangan. Hasil pengkuran di peroleh data ada pengaruh gerakan sholat terhadap ketahanan (endurance) otot extensor punggung bawah. Hubungan yang signifikan antara sholat wajib dan rowatib dengan sholat tahajjud (p = 0,000).