bluuebunny/crossref_metadata_2025 huggingface dataset:
Dependence of Piezoelectric Discs Electrical Impedance on Mechanical Loading Condition
Authors: Gogoi Niharika , Chen Jie , Kirchner Jens , Fischer Georg
Published: February 2022

The piezoelectric effect, along with its associated materials, fascinated researchers in all areas of basic sciences and engineering due to its interesting properties and promising potentials. Sensing, actuation, and energy harvesting are major implementations of piezoelectric structures in structural health monitoring, wearable devices, and self-powered systems, to name only a few. The electrical or mechanical impedance of its structure plays an important role in deriving its equivalent model, which in turn helps to predict its behavior for any system-level application, such as with respect to the rectifiers containing diodes and switches, which represent a nonlinear electrical load. In this paper, we study the electrical impedance response of different sizes of commercial piezoelectric discs for a wide range of frequencies (without and with mechanical load for 0.1–1000 kHz with resolution 20 Hz). It shows significant changes in the position of resonant frequency and amplitude of resonant peaks for different diameters of discs and under varying mechanical load conditions, implying variations in the mechanical boundary conditions on the structure. The highlight of our work is the proposed electrical equivalent circuit model for varying mechanically loaded conditions with the help of impedance technique. Our approach is simple and reliable, such that it is suitable for any structure whose accurate material properties and dimensions are unknown.
Complex Electromagnetic Issues Associated with the Use of Electric Vehicles in Urban Transportation
Authors: Gryz Krzysztof , Karpowicz Jolanta , Zradziński Patryk
Published: February 2022

The electromagnetic field (EMF) in electric vehicles (EVs) affects not only drivers, but also passengers (using EVs daily) and electronic devices inside. This article summarizes the measurement methods applicable in studies of complex EMF in EVs focused on the evaluation of characteristics of such exposure to EVs users and drivers, together with the results of investigations into the static magnetic field (SMF), the extremely low-frequency magnetic field (ELF) and radiofrequency (RF) EMF related to the use of the EVs in urban transportation. The investigated EMF components comply separately with limits provided by international labor law and guidelines regarding the evaluation of human short-term exposure; however other issues need attention—electromagnetic immunity of electronic devices and long-term human exposure. The strongest EMF was found in the vicinity of direct current (DC) charging installations—SMF up to 0.2 mT and ELF magnetic field up to 100 µT—and inside the EVs—up to 30 µT close to its internal electrical equipment. Exposure to RF EMF inside the EVs (up to a few V/m) was found and recognized to be emitted from outdoor radiocommunications systems, together with emissions from sources used inside vehicles, such as passenger mobile communication handsets and antennas of Wi-Fi routers.
Association between Functional Movement Screen Scores and Athletic Performance in Adolescents: A Systematic Review
Authors: Fitton Davies Katie , Sacko Ryan S. , Lyons Mark A. , Duncan Michael J.
Published: February 2022

This study systematically reviews the literature examining the relationship between Fundamental Movement Screen (FMS©) scores and athletic performance in youth. We searched English-language papers on PubMed/MEDLINE, SportsDiscus, CINAHL, and EBSCO for the following inclusion criteria: Participants aged between 11 and 17 years, studies had to include the Functional Movement Screen© (FMS©) and at least one of the following performance outcomes, highlighted by athletic development models (i.e., long-term athletic development (LTAD), youth physical development (YPD)): agility, speed, power, strength, endurance, and balance (YPD), fitness (LTAD), or sport-specific skill (LTAD and YPD). A total of 3146 titles were identified, with 13 relevant studies satisfying the inclusion criteria after full-text screening. The results of this systematic review suggest that children and youth who score highly on the FMS© also tend to have better scores for agility, running speed, strength, and cardiovascular endurance. The strength of associations was weak to moderate in nature. Only one study was considered or controlled for biological maturation in their analysis. These results provide evidence that, while there is a relationship between FMS© scores and tests of athletic performance in youth, they are not the same thing and should be considered conceptually different constructs.
Surgical Techniques Development: A Multidisciplinary Medium for the Future Practical Surgery
Authors: Riggio Egidio
Published: February 2022

Surgical Techniques Development is an Open Access peer-reviewed journal focusing on minimally invasive surgical techniques, technical innovations such as new instruments, new technologies, new robotics applications, and other new ideas, and is open to suggestions coming from all areas of surgery [...]
Exploring Wineries and Wine Tourism Potential in the Republic of Srpska, an Emerging Wine Region of Bosnia and Herzegovina
Authors: Vukojević Dajana , Tomić Nemanja , Marković Nenad , Mašić Branislav , Banjanin Tijana , Bodiroga Radomir , Đorđević Tijana , Marjanović Miloš
Published: February 2022

The aim of this paper is to present the current state and wine tourism potential in the Republic of Srpska with the primary focus on its wineries and their activities towards attracting wine tourists from all over the world. To achieve this, a survey was conducted among 37 wineries in the Republic of Srpska. The first part of the questionnaire included data about planted grape varieties, annual yield, wine production, vineyards areas, and winery staff information. The second part of the survey was dedicated to the degree of participation of wineries in wine tourism activities and the services offered to wine tourists. Results indicate that the major factors thwarting further wine tourism development are the lack of accommodation and catering facilities as well as tours in foreign languages. One of the problems is the current lack of wine routes generally seen as critical supporting tools for wine tourism development. Based on the research results, the authors propose two wine routes in the Republic of Srpska, the Northern and Southern wine routes. Further wine tourism development should be focused mainly on these areas.
The Contribution of Data-Driven Technologies in Achieving the Sustainable Development Goals
Authors: Bachmann Nadine , Tripathi Shailesh , Brunner Manuel , Jodlbauer Herbert
Published: February 2022

The United Nations’ Sustainable Development Goals (SDGs) set out to improve the quality of life of people in developed, emerging, and developing countries by covering social and economic aspects, with a focus on environmental sustainability. At the same time, data-driven technologies influence our lives in all areas and have caused fundamental economical and societal changes. This study presents a comprehensive literature review on how data-driven approaches have enabled or inhibited the successful achievement of the 17 SDGs to date. Our findings show that data-driven analytics and tools contribute to achieving the 17 SDGs, e.g., by making information more reliable, supporting better-informed decision-making, implementing data-based policies, prioritizing actions, and optimizing the allocation of resources. Based on a qualitative content analysis, results were aggregated into a conceptual framework, including the following categories: (1) uses of data-driven methods (e.g., monitoring, measurement, mapping or modeling, forecasting, risk assessment, and planning purposes), (2) resulting positive effects, (3) arising challenges, and (4) recommendations for action to overcome these challenges. Despite positive effects and versatile applications, problems such as data gaps, data biases, high energy consumption of computational resources, ethical concerns, privacy, ownership, and security issues stand in the way of achieving the 17 SDGs.
Spatiotemporal Evolution and Prediction of AOT in Coal Resource Cities: A Case Study of Shanxi Province, China
Authors: Tang Yan , Xu Rui , Xie Mengfan , Wang Yusu , Li Jian , Zhou Yi
Published: February 2022

As aerosols in the air have a great influence on the health of residents of coal resource-based cities, these municipalities are confronting the dilemma of air pollution that is caused by the increase of suspended particles in the atmosphere and their development process. Aerosol optical thickness could be used to explore the aerosol temporal and spatial variations and to develop accurate prediction models, which is of great significance to the control of air pollution in coal resource-based cities. This paper explored the temporal spatial variation characteristics of aerosols in coal resource-based regions. A total of 11 typical coal-resource prefecture-level cities in the Shanxi Province were studied and inverted the aerosol optical thickness (AOT) among these cities based on MODIS (Moderate Resolution Imaging Spectroradiometer) data and analyzed the significant factors affecting AOT. Through inputting significant correlation factors as the input variables of NARX (nonlinear auto regressive models with exogenous inputs) neural network, the monthly average AOTs in the Shanxi Province were predicted between 2011 and 2019. The results showed that, in terms of time series, AOT increased from January to July and decreased from July to December, the maximum AOT was 0.66 in summer and the minimum was 0.2 in autumn, and it was related to the local monsoon, temperature, and humidity. While as far as the space alignment is concerned, the figure for AOT in Shanxi Province varied significantly. High AOT was mainly concentrated in the centre and south and low AOT was focused on the northwestern part. Among the positively correlated factors, the correlation coefficient of population density and temperature exceeded 0.8, which was highly positive, and among the negatively correlated factors, the correlation coefficient of NDVI exceeded -0.8, which was highly negative. After improving the model by adding the important factors that were mentioned before, the error between the predicted mean value and the actual mean value was no more than 0.06. Considering this charge, the NARX neural network with multiple inputs can contribute to better prediction results.
How Close Are We to Self-Provisioning? A Look at the Livelihood Strategies of Rural Households in the Southern Andean Region of Colombia
Authors: Hernández Héctor Eduardo , Gutiérrez Gustavo Adolfo , Gutiérrez-Montes Isabel , Suárez Juan Carlos , Andrade Hernán J. , Bernal Angie Paola , Casanoves Fernando , Flora Cornelia Butler
Published: February 2022

Production for self-provisioning contributes to food security in rural territories; however, studies have indicated that this capacity is limited. We analyzed the impact of livelihood strategies on self-provisioning conditions in 162 rural households in the department of Huila, Colombia. We analyzed: a. source of foods; b. composition of home gardens; c. push and pull factors towards self-provisioning. We found that rural households are 79% dependent on grocery stores for their food. Only 51% of households have a home garden, with limited plant species diversity. Capacity for self-provisioning varies according to the livelihood strategies and capitals endowment of the household. Those households with a greater diversity of agricultural activities have higher capacity for self-provisioning. Conditions that are often the main objective of rural development programs, such as improving the economic income of families, turn out to be contradictory to the capacity to produce the food itself. For example, the larger the area to grow crops or keep livestock and the better the economic income, the greater the external dependence on food.
Do Tourists Really Care about Authenticity? A Study on Tourists’ Perceptions of Nature and Culture Authenticity
Authors: Li Li , Li Shasha
Published: February 2022

The role that authenticity plays in tourism is debatable. Researchers have focused on the nature of authenticity, while the natural landscape is taken for granted as authentic. “Landscape” is the symbolic environment created by human acts of conferring meaning to nature and the environment. The concept of nature authenticity is proposed to enrich the connotation of authenticity. A structural equation model was used to analyze the relationships between motivation, perceived authenticity, destination image and satisfaction. The results indicate that perceived authenticity positively affects tourists’ perceptions of the destination image in both the context of nature (β = 0.51, p < 0.01) and the cultural context (β = 0.65, p < 0.01). Perceived authenticity also has positive effects on the satisfaction for both the natural (β = 0.42, p < 0.01) and cultural (β = 0.20, p < 0.01) aspects. Tourists valued both nature and culture authenticity in the Chinese context. As a newly emerged phenomenon, performing arts act as an effective way to demonstrate local culture and history. The moderating effect of a performing art show was discussed with model comparison. Tourists who watched the performing arts show thought highly of the authenticity of the destination, especially regarding the cultural aspect.
An Experimental Investigation of Microbial-Induced Carbonate Precipitation on Mitigating Beach Erosion
Authors: Tsai Ching-Piao , Ye Jin-Hua , Ko Chun-Han , Lin You-Ren
Published: February 2022

Microbial-induced calcium carbonate precipitation (MICP) has the potential to be an environmentally friendly technique alternative to traditional methods for sustainable coastal stabilization. This study used a non-pathogenic strain that exists in nature to experimentally investigate the application of the MICP technique on mitigating sandy beach erosion. First, the unconfined compressive strength (UCS) test was adopted to explore the consolidation performance of beach sand after the MICP treatment, and then model tests in a wave flume were conducted to investigate the MICP ability to mitigate beach erosion by plunger waves. This study also employed field emission scanning electron microscopy (FE-SEM) and energy-dispersive X-ray spectroscopy (EDS) to observe the crystal forms of MICP-treated sand after wave action. The results reveal that the natural beach sand could be consolidated by the MICP treatment, and the compressive strength increased with the increase in the cementation media concentration. In this study, the maximum compressive strength could be achieved was 517.3 kPa. The one-phase and two-phase MICP treatment strategies were compared of sandy beach erosion tests with various spray and injection methods on the beach surface. The research results indicate that the proper MICP treatment could mitigate beach erosion under various wave conditions; the use of MICP reduced beach erosion up to 33.9% of the maximum scour depth.
Improving Sustainable Vegetation Indices Processing on Low-Cost Architectures
Authors: Saddik Amine , Latif Rachid , El Ouardi Abdelhafid , Alghamdi Mohammed , Elhoseny Mohamed
Published: February 2022

The development of embedded systems in sustainable precision agriculture has provided an important benefit in terms of processing time and accuracy of results, which has influenced the revolution in this field of research. This paper presents a study on vegetation monitoring algorithms based on Normalized Green-Red Difference Index (NGRDI) and Visible Atmospherically Resistant Index (VARI) in agricultural areas using embedded systems. These algorithms include processing and pre-processing to increase the accuracy of sustainability monitoring. The proposed algorithm was evaluated on a real database in the Souss Massa region in Morocco. The collection of data was based on unmanned aerial vehicles images hand data using four different agricultural products. The results in terms of processing time have been implemented on several architectures: Desktop, Odroid XU4, Jetson Nano, and Raspberry. However, this paper introduces a thorough study of the Hardware/Software Co-Design approach to choose the most suitable system for our proposed algorithm that responds to the different temporal and architectural constraints. The evaluation proved that we could process 311 frames/s in the case of low resolution, which gives real-time processing for agricultural field monitoring applications. The evaluation of the proposed algorithm on several architectures has shown that the low-cost XU4 card gives the best results in terms of processing time, power consumption, and computation flexibility.
Performance of Fiber-Reinforced Alkali-Activated Mortar with/without Nano Silica and Nano Alumina
Authors: Dheyaaldin Mahmood Hunar , Mosaberpanah Mohammad Ali , Alzeebaree Radhwan
Published: February 2022

The current study is aimed to evaluate the effect of nanomaterials (nano alumina (NA) and nano silica (NS) on the mechanical and durability performance of fiber-reinforced alkali-activated mortars (FRAAM). Polypropylene fiber (PPF) was added to the binders at 0.5% and 1% of the volume of the alkali-activated mortar (AAM). Design-expert software was used to provide the central composite design (CCD) for mix proportions. This method categorizes variables into three stages. The number of mixes was created and evaluated with varied proportions of variables. The primary binders in this experiment were 50% fly ash (FA) and 50% ground granulated blast slag (GGBS). The alkali-activated solution to binder ratio was 0.5, and the sodium hydroxide (NaOH) concentration was 12 molarity. The sodium silicate to sodium hydroxide ratio was 2.5. The cubic specimens and prisms were evaluated in an ambient atmosphere at 23 + 3 °C room temperature at the ages of 7 and 28 days. The mechanical performance of AAM was indicated through evaluation of the compressive and flexural strength, flowability, and unit weight of the alkali activator mortar. In addition, the durability performance and microstructure analysis were also evaluated. The experiments demonstrated that the AAM without fibers and nanomaterials had a higher flow rate than the other mixtures. However, the flowability of all mixtures was acceptable. The highest compressive strength was deducted through the use of 2% NA and higher flexural tensile strength was obtained for mixtures included 1% NS and 0.5% PPF. The lower water absorption was noted through the combination of 2% nano silica and 1% polypropylene fiber. Whereas, the combination of 2% nano silica, 1% nano alumina, and 0.5% polypropylene fiber had the lower sorptivity. In addition, the microstructure analysis indicated that the nanomaterials significantly improved the matrix and the porosity of the matrix was considerably reduced.
Resource Pressure of Carpets: Guiding Their Circular Design
Authors: Lama Virginia , Righi Serena , Quandt Brit Maike , Hischier Roland , Desing Harald
Published: February 2022

When designing a product, many decisions are made that determine the environmental impacts that the product will eventually exert on our planet. Therefore, it is paramount to have considered the environmental performance already in the design phase. In this contribution, we showcase the application of the recently developed resource pressure (RP) method to assess the environmental sustainability of various carpet design alternatives. This method consists of qualitative guidelines and a quantitative indicator. With the Earth’s carrying capacity as a reference, the product system is evaluated in relation to its consumption of primary resources and the final generation of waste. Several scenarios are developed by following the design guidelines provided by this method. Those scenarios aim at identifying the most promising circular strategies for reducing the products’ resource pressure. To assess the validity of the RP method, the results are compared to a simplified LCA study. This comparison showed a close correlation for most of the considered impact categories. It confirms that the RP method can effectively predict environmental impacts across a wide range of impact categories, reducing the amount of necessary data and simplifying the calculations. It can therefore support designers in considering the environmental effects easily, from the beginning of the design process onward. Moreover, the simplicity of this method makes it attractive for application by practitioners who are not themselves experts in environmental assessments.
Systematic Modeling and Analysis of On-Board Vehicle Integrated Novel Hybrid Renewable Energy System with Storage for Electric Vehicles
Authors: Mamun Kabir A. , Islam F. R. , Haque R. , Chand Aneesh A. , Prasad Kushal A. , Goundar Krishneel K. , Prakash Krishneel , Maharaj Sidharth
Published: February 2022

The automobile industry and technology are putting a great significance in improving vehicles to become more fuel economical, but with incremental costs relative to conventional vehicle technologies; these new vehicles are electric vehicles (EV), plug-in hybrid electric vehicles (PHEV), and hybrid electric vehicles (HEV). However, their significant capabilities to reduce petroleum consumption and achieve efficiency over their life cycles offer economic benefits for customers, industry, carmakers, and policymakers. In this paper, an HEV concept based on renewable energy resources (RERs) is proposed. The proposed HEV design utilizes solar PV energy, wind energy, fuel cell, and a supercapacitor (PV + WE + FC + SC) which generates electrical energy via a proton exchange membrane (PEM) and an SC to cater for strong torque requirements. The vehicle incorporates a battery pack in conjunction with an SC for the power demands and an FC as the backup energy supply. An alternator connected to turbine blades runs by wind energy while the car is moving forward, which produces electricity through the alternator to charge the battery. The design aims to ensure zero carbon emission and improved energy efficiency, is lightweight, and incorporates in-wheel motors to eliminate the mechanical transmissions. Modeling and simulation were carried out for each subsystem using MATLAB® and Simulink® packages. ANSYS Fluent simulation was used to analyze wind energy. The standard analysis, e.g., pressure, velocity, and vector contour, were also considered while designing the final model. To regulate the power supply and demand, the selection of energy sources was controlled by a rule-based supervisory controller following a logical sequence that prioritizes energy sources with the SC as a source in-vehicle stop-and-go situations while the battery acts as the primary source, FC as a backup supply, and wind and solar power to recharge the battery. Solar charging is switched on automatically once the vehicle is parked, and the controller controls the energy flow from the alternator during that period.
Calculus, Gauge Theory and Noncommutative Worlds
Authors: Kauffman Louis H.
Published: February 2022

This paper shows how gauge theoretic structures arise in a noncommutative calculus where the derivations are generated by commutators. These patterns include Hamilton’s equations, the structure of the Levi–Civita connection, and generalizations of electromagnetism that are related to gauge theory and with the early work of Hermann Weyl. The territory here explored is self-contained mathematically. It is elementary, algebraic, and subject to possible generalizations that are discussed in the body of the paper.
Microwave-Assisted Synthesis of 2-Methyl-1H-indole-3-carboxylate Derivatives via Pd-Catalyzed Heterocyclization
Authors: Bellavita Rosa , Casertano Marcello , Grasso Nicola , Gillick-Healy Malachi , Kelly Brian G. , Adamo Mauro F. A. , Menna Marialuisa , Merlino Francesco , Grieco Paolo
Published: February 2022

Indole moiety is well-known as a superlative framework in many natural products and synthetic pharmaceuticals. Herein, we report an efficient procedure to synthesize a series of functionalized 2-methyl-1H-indole-3-carboxylate derivatives from commercially available anilines properly functionalized by different electron-withdrawing and -donating groups through a palladium-catalyzed intramolecular oxidative coupling. The conversion of a variety of enamines into the relevant indole was optimized by exposing the neat mixture of reactants to microwave irradiation, obtaining the desired products in excellent yields and high regioselectivity. The synthesized compounds were confirmed by 1H and 13C spectroscopic means as well as by high-resolution mass spectrometry.
Successive Pandemic Waves with Different Virulent Strains and the Effects of Vaccination for SARS-CoV-2
Authors: Castro e Silva Alcides , Bernardes Américo Tristão , Barbosa Eduardo Augusto Gonçalves , Chagas Igor Aparecido Santana das , Dáttilo Wesley , Reis Alexandre Barbosa , Ribeiro Sérvio Pontes
Published: February 2022

One hundred years after the flu pandemic of 1918, the world faces an outbreak of a new severe acute respiratory syndrome, caused by a novel coronavirus. With a high transmissibility, the pandemic has spread worldwide, creating a scenario of devastation in many countries. By the middle of 2021, about 3% of the world population had been infected and more than 4 million people had died. Different from the H1N1 pandemic, which had a deadly wave and ceased, the new disease is maintained by successive waves, mainly produced by new virus variants and the small number of vaccinated people. In the present work, we create a version of the SIR model using the spatial localization of persons, their movements, and considering social isolation probabilities. We discuss the effects of virus variants, and the role of vaccination rate in the pandemic dynamics. We show that, unless a global vaccination is implemented, we will have continuous waves of infections.
Concerns regarding tablet splitting: a systematic review
Authors: Saran Aanchal K , Holden Natalie A , Garrison Scott R
Published: February 2022

Background

Tablet splitting can provide dose flexibility and cost savings; however, pharmaceutical representatives typically discourage the practice.

Aim

To identify and summarise all published concerns related to tablet splitting and to present the experimental evidence that investigates those concerns.

Design & setting

Systematic review and qualitative synthesis of tablet-splitting concerns and evidence.

Method

Medline and EMBASE databases were searched over all years of publication for articles in English discussing the splitting of tablets. Eligible articles included original research, narrative reviews, systematic reviews, and expert opinion.

Results

After removing duplicates, 1837 potentially relevant articles underwent dual review, whereupon 1612 articles were excluded based on title and abstract. After examination of 225 full texts, 138 articles were included (one systematic review, four narrative reviews, 101 original research articles, and 32 opinion articles). The described concerns included difficulty breaking tablets, loss of mass, weight variability, chemical instability, overly rapid dosing if sustained-release medications are split, non-compliance, and patient confusion resulting in medication errors. No substantive evidence was found to support concerns regarding loss of mass, weight variability, chemical instability, or non-compliance. Evidence does support some older adults struggling to split tablets without tablet splitters, and the inappropriateness of splitting sustained-release preparations, given the potential for alteration of the rate of drug release for some products.

Conclusion

With the exception of sustained-release tablets, which should not be split, and excepting those older people who may struggle to split tablets based on physical limitations, there is little evidence to support tablet-splitting concerns.
Implementasi Kebijakan Penertiban Ternak di Kecamatan Pante-Makassar, Oe-Cusse, Timor Leste
Authors: Neno Victor Manuel , Purnaweni Hartuti , Dwimawanti Ida Hayu , Afrizal Teuku
Published: February 2022

This study focuses on the Implementation of Livestock Control in the District of Pante-Makassar, Oe-Cusse, Timor Leste, this study aims to analyze the extent to which the Implementation of Livestock Control Policies in the District of Pante-Makassar, Oe-Cusse, Timor Leste, and the supporting and inhibiting factors of implementation Policy. The methodology used in this paper is a descriptive qualitative method. This research uses selected informants by purposive sampling. There are 10 informants in this research. The method used in gathering information is observation, interviews and documentation. The results of the study indicate that human resources and financial resources, when viewed from these two resources, it can be concluded that there is a lack of human resources and financial resources that are still minimal so that it can affect the implementation of livestock management policies. In the disposition there is a consensus between policy makers and policy implementers. The organizational structure of livestock control has been established and has carried out its duties but in its implementation it has not been as expected in accordance with the government decree that has been set. the government needs to pay attention to financial resources and human resources so that before implementing policies. It is necessary to conduct socialization to livestock owners before the policy is implemented.
Usaha Kedai Kopi Berbasis Modal Sosial
Authors: Indriani Fitri Sekti , Yuhastina Yuhastina , Trinugraha Yosafat Hermawan
Published: February 2022

This study tested the social capital consept of Robert D. Putnam encompassing the essential components such as a networking, the norm of reciprocity and trust in the coffee shop of economic actors. An important problem in this study is how the role of external actors as social capital in the running of the Yu Bunt Coffee Shop business is. This study is a qualitative study with a case study approach to the coffee shop business. The data in this study were obtained through the method of involved observation, in-depth interviews, and documentation. The results of the study show that the social capital of each individual involved forms a network that is able to produce reciprocal norms, and trust which also affects the sustainability of the Yu Bunt Coffee Shop business. Meanwhile, the role of external actors in the form of friendship greatly affects the level of income and business success of the Yu Bunt Coffee Shop. The contribution of this study is social capital related to the role of external actors is an important aspect that must be maintained for the survival and success of small businesses such as coffee shops in this case study. This is important because there is a reciprocal principle that operates intersubjectively in the social capital network that is formed.
Pengaruh Number Head Together dan Motivasi Belajar terhadap Prestasi Siswa
Authors: Manurung Nike Yuli Restina , Darmaya Ayi , Sukmayadi Dodi
Published: February 2022

This article aims to determine the effect of the Number Head Together type of cooperative learning model on student achievement, the effect of motivational learning on learning achievement, the effect of NHT model interaction and learning motivation on student achievement. This research was conducted at SDN 112233 Sidorejo, Torgamba District. The population was all 60 fourth grade students. The sample is all students as many as 30 students in class A and as many as 30 students in class B. The research instruments used were learning outcomes tests and learning motivation questionnaires. The research method uses a quasi-experimental method with a 2x2 factorial. The data analysis technique used ANOVA at a significant level of 0.05. The results of the analysis show that the learning achievement of students with the NHT model is higher than those taught by the conventional model (Fcount = 11,619> Ftable = 2.0021), there is a significant difference in the learning outcomes of students who have high motivation and low motivation (Fcount = 15,646> Ftable = 2 0.0021) and there is a significant interaction between the NHT model and students' learning motivation on learning achievement (Fcount = 4.378> Ftable = 2.0021). This study concludes that overall students who are taught with the NHT cooperative learning model and have high motivation have higher learning achievements than students who are taught using the conventional model
The Rise of China’s Influence in Melanesian Spearhead Group (MSG): Threat to Indonesia’s Border Issues
Authors: Prakoso Septyanto Galan , Surya Negara Rameez Ali , Reynaldi Rheyno , Ahmad Damar Priambodo , Sayekti Niki Wahyu
Published: February 2022

This article or writing aims to discuss the rising influence of China over the Melanesian Spearhead Group (MSG) which could become a potential threat to Indonesia. It was worth to note that MSG has been involved directly to the effort for West Papua. Meanwhile, Indonesia and China relation has a strained relation in the South China Sea dispute. Hence, Indonesia is now facing two problems at once, one on the northern side of its border and the other one on the eastern side of its border.  The problem is focused on how China can use the West Papua issue to pressure Indonesia regarding the South China Sea dispute by using their influence over the MSG countries. The analysis conducted in this research will analyze and explain the situation faced by the Indonesian government based on the facts. In order to approach this problem the theory of Hegemony is used. The data is collected through library research and analyzed qualitatively. This study concludes that due to China’s rising influence on the MSG, China had the much-needed leverage on Indonesia in South China Sea dispute and Indonesia is at the disadvantaged position where it has to face two problems at once those are regarding West Papua and South China Sea.
Peran Masyarakat dalam Pembangunan Berkelanjutan Berwawasan Lingkungan pada Sektor Industri Kehutanan
Authors: Dewi Siregar Fitri Yanni
Published: February 2022

Environmentally sound development is a conscious and planned effort that integrates the environment, including resources, into the development process to ensure the ability, welfare, and quality of life of present and future generations. This study aims to determine the importance of community participation in environmentally sustainable development in the forestry industry sector as a form of prevention and eradication of forest destruction and to increase public awareness about the importance of forest conservation and the negative impacts of forest destruction. The research method used is a normative juridical approach based on primary legal materials using data collection techniques through document studies which are then analyzed qualitatively. In this study it can be concluded that community participation is an absolute must in the framework of creating a healthy living environment as regulated in several laws and regulations and optimizing community participation in environmental protection and management activities by providing wider space for the community to participate.
Estetisasi Jilbab dalam Ludruk Budhi Wijaya
Authors: Krishadianti Maya Rosalinda , Abdillah Autar
Published: February 2022

The aesthetics of the headscarf on Budhi Wijaya's ludruk aims to show a new form of innovation in the ludruk performance, in which the hijab in the show is used as a support for the characters in the play that is delivered. Ludruk Budhi Wijaya is a millennial ludruk group that accepts all new forms of ludruk performances including the hijab. This study was conducted based on the experience of researchers who were also ludruk players who wore headscarves but were rejected by other ludruk groups because of the limitations of the headscarves worn. descriptive research method using qualitative observer participants as well as participating in the show that was held. The results of the study were then analyzed using the experience theory of Dewiit Hendry Parker, namely subjectivity about the nature of Dewiit Henry Parker's values with four elements that play a role in experience, namely subject, freedom, cause, constant. The results of the research that have been analyzed found that the free and spontaneous response experienced by the subject (artist and audience) related to the hijab in the ludruk performance with the play Faithfulness of a Wife. The existence of a headscarf in the ludruk show also emphasizes the character of the actor in the show
Analisis Hukum Bentuk-Bentuk Radikalisme pada Pendidikan Anak Usia Dini
Authors: Hanifah Ida , Nurhilmiyah Nurhilmiyah
Published: February 2022

Indeed, at an early age, religious values should be instilled in accordance with the beliefs held by their parents. So that children in the future have better morals, accompanied by religious knowledge that is taught from an early age. It should be supported to continuously animate religious knowledge. So that children's lives in the future remain in the goodness that is recommended by the teachings of revelation. In fact, what is currently happening is that teaching religious knowledge from an early age is called by the government as a radical teaching, so the question arises whether teaching and practicing religious activities is included in a radical understanding? When it is said to be radical, it means that all religious people are adherents of radicalism. It is important to examine the existence of forms of radicalism in early childhood education institutions. This study uses empirical legal research methods by taking research locations in two kindergartens. The conclusion of this study is based on the results of our team's analysis, that there are no forms of radicalism from teaching materials, ways of delivering and other matters related to the implementation of early childhood education, which have anything to do with radicalism. Suggestions to the government, to look more fairly and wisely, so that there is no longer the assumption that radicalism is found in early childhood education.
Analisis Kebijakan dalam Penanganan Dampak Risiko Covid-19 Terhadap Usaha Mikro, Kecil dan Menengah Di Kota Bandung Jawa Barat, Indonesia
Authors: Raharja Sam'un Jaja , Muhyi Herwan Abdul , Tahir Rusdin
Published: February 2022

The Covid-19 outbreak has had implications for various areas of life, including health, economics and social. The economic impact is felt by all economic actors. This study aims to analyze the impact of the risk of Covid-19 on Micro, Small and Medium Enterprises (MSMEs) in Bandung City and formulate policy steps for these MSMEs. The research method used in this research is a combination research method, namely quantitative and qualitative methods. Primary data collection techniques through distributing questionnaires to MSMEs business actors during the Pandemic. Secondary data were collected from government reports, mass media news, as well as sources from journals and research reports. The research was carried out from April to July 2020. The results showed the impact of PSBB felt by MSMEs in the form of a decrease in sales of 92%, 77% of demand, an increase in raw material prices of 53%, 48% of financial difficulties, 45% of production constraints, of raw material difficulties 49 % and distribution barriers 38%. The research concludes that the implementation of PSBB in Indonesia is unlikely to be prolonged. The effect of implementation has a direct impact on MSMEs that lose income. The recovery needed by MSMEs is market access. Acceleration of recovery can be done by making policies for the procurement of goods and services supplied by MSMEs. The government is advised to campaign for “spending from MSMEs.” Capital assistance is provided in the form of low-interest loans with a wide payback period for additional working capital needs.
Pengaruh Computer-Self Efficacy, Perceive Usefulness dan Perceived Ease of Use Terhadap Pemanfaatan Simrs Oleh Perawat
Authors: Gultom Dinna Guswita , Turnip Kaiman , Siregar Nina Siti Salmaniah
Published: February 2022

This study aims to determine the effect of computer self-efficacy, perceived usefulness and perceived ease of use on the use of SIMRS by nurses at RSU. Haji Medan. This study uses a quantitative research design with data collection techniques using the questionnaire method. The sampling technique used probability sampling type Cluster Sampling as many as 60 samples of nurses from a total population of 204 nurses in inpatient, outpatient and emergency department installations. The data analysis technique used in this study uses multiple regression analysis, t test to determine the effect between variables partially, and F test to determine the effect between variables simultaneously. The study was conducted from April to June 2021 with the results of the study finding that the computer self-efficacy variable did not partially affect the use of SIMRS. The purpose of using SIMRS to realize integrated documentation will not be achieved if the system has not been fully adopted by other Health Human Resources even though nurses are confident in their ability to use the system. Meanwhile, the variables perceived usefulness and perceived ease of use have a positive effect on the utilization of SIMRS by nurses in completing their tasks.
Studi Analisis Kinerja Pegawai Kantor Camat Malinau Selatan
Authors: Rahmawati Rahmawati , Milwan Milwan , Wibowo Soesilo
Published: February 2022

This article aims to discuss employee performance issues within the South Malinau District Office. The problem is focusing on the achievement of employee performance according to indicators of individual ability, motivation, support received, the existence of the work they do and their relationship with the organization, and the factors that influence it. Research approach using Organizational performance theory references from Robbins and Judge and Kadarisman. The data were collected through observation and interviews and analyzed qualitatively. This study concludes that the performance of employees at the Malinau Selatan Sub-district Office shows low performance based on employee performance indicators and influence by factors both from internal and external employees.
Fenomena Internet Trolling, sebuah Bentuk Kejahatan Siber
Authors: Bilondatu Nadia Ilona , Susanti Vinita
Published: February 2022

This article offers a discussion of a form of cybercrime, namely internet trolling, which, although, isn’t as frequently discoursed as the other online deviant behaviors, but it has started to become quite a phenomenon of its own lately, and has the potential to disrupt and damage public order and social order prevailing in the society. This article aims to provide an explanation and offer a brief analysis of the behavior of internet trolling; how it differs from several other online antisocial behaviors (ASOB); analysis of psychological and social causal factors and briefly discusses the characteristics of the perpetrators, criminological aspects and legal aspects related to the behavior, referring to the articles in the Criminal Code (KUHP) and the Law on Information and Electronic Transactions (ITE Law); also, points on how to handle this issue, in terms of what should be done if you become a victim of internet trolling and prevention steps as closing. This article was prepared by conducting research on document analysis in various forms, including laws and regulations, survey results and previous research, journal articles and various articles from the mass media
Eksistensi Kesenian Rinding Gumbeng di Era Globalisasi
Authors: Al Hafidhoh Nabilah , Yuhastina Yuhastina , Trinugraha Yosafat Hermawan
Published: February 2022

Research on Rinding Gumbeng art in Duren Hamlet, Beji aims to explore how the existence of Rinding Gumbeng Art in the current Globalization Era. The method used is qualitative research. Qualitative data obtained through field observations with purposive sampling technique. Qualitative data were obtained through in-depth interviews with 10 prospective participants. Qualitative data were analyzed using Spradley's domain model, which gives a general and comprehensive picture of the research object. The data obtained through surveys and interviews were then converted into a script in order to obtain an overview of the object under study. The research concludes that the existence of Rinding Gumbeng art in Dusun Duren is still growing and surviving well by undergoing changes to follow the conditions in the current era of globalization. Rinding Gumbeng art is still being preserved to this day and has even begun to be known outside the region.
Hubungan Dukungan Orang Tua Dan Efikasi Diri Dengan Motivasi Belajar Siswa Kelas VIII Sekolah Menengah Pertama
Authors: Mahmuda Syarifah , Lubis Saiful Akhyar , Siregar Nina Siti S
Published: February 2022

This study aims to determine the relationship between parental support and self-efficacy with learning motivation of eighth grade students of SMP Shafiyyatul Amaliyyah Medan, with a population of 103 students. The research sample amounted to 26 students. The method used in this research is quantitative method with sampling technique using Random Sampling Technique . The instrument used is a Likert scale model questionnaire. The data collection technique used three scales consisting of the Parental Support, Self-Efficacy and Learning Motivation scales. The analysis technique used is Multiple Regression. Based on the results of the study it was concluded that: 1) there was a significant positive relationship between parental support and learning motivation with a correlation coefficient (rx1y) of  0.698 with p = 0.000, R2 = 0.487 with a contribution of 48.7%. 2) There is a significant positive relationship between self-efficacy and student learning motivation with the results of the correlation coefficient (rx2y) of 0.715 with p = 0.000, R2 = 0.512 with a contribution of 51.2%. 3) There is a significant positive relationship between parental support and self-efficacy with learning motivation, this result is indicated by the linearity coefficient value of F = 16.919 and p = 0.000, p <0.05 and R2 = 0.595, with a contribution of 59.5%. These results indicate that there are still 40.5% contributions from other factors that can affect learning motivation. From these results it can be said that the higher the parental support and self-efficacy, the higher the learning motivation, and conversely the lower the parental support and self-efficacy, the lower the students' learning motivation.