bluuebunny/crossref_metadata_2025 huggingface dataset:
A Cooperative Multi-Agent Based Path-Planning and Optimization Strategy for Dynamic Environment
Authors: Sundar Junior , Yesudasan Sumith , Chacko Sibi
Published: December 2020

This investigation explores a novel path-planning and optimization strategy for multiple cooperative robotic agents, applied in a fully observable and dynamically changing obstacle field. Current dynamic path planning strategies employ static algorithms operating over incremental time-steps. We propose a cooperative multi-agent (CMA) based algorithm, based on natural flocking of animals, using vector operations. It is preferred over more common graph search algorithms like A* as it can be easily applied for dynamic environments. CMA algorithm executes obstacle avoidance using static potential fields around obstacles, that scale based on relative motion. Optimization strategies including interpolation and Bezier curves are applied to the algorithm. To validate effectiveness, CMA algorithm is compared with A* using static obstacles due to lack of equivalent algorithms for dynamic environments. CMA performed comparably to A* with difference ranging from -0.2% to 1.3%. CMA algorithm is applied experimentally to achieve comparable performance, with an error range of -0.5% to 5.2%. These errors are attributed to the limitations of the Kinect V1 sensor used for obstacle detection. The algorithm was finally implemented in a 3D simulated space, indicating that it is possible to apply with drones. This algorithm shows promise for application in warehouse and inventory automation, especially when the workspace is observable.
On a Linearly Damped 2 Body Problem
Authors: Haraux Alain
Published: December 2020

The usual equation for both motions of a single planet around the sun and electrons in the deterministic Rutherford-Bohr atomic model is conservative with a singular potential at the origin. When a dissipation is added, new phenomena appear. It is shown that whenever the momentum is not zero, the moving particle does not reach the center in nite time and its displacement does not blow-up either, even in the classical context where arbitrarily large velocities are allowed. Moreover some formal calculations suggest the existence of special orbits with an asymptotically spiraling convergence to the center.
Phylogeographical and Evolutionary History of Variola major Virus; A Question of Timescales?
Authors: Bergna Annalisa , Della Ventura Carla , Marzo Rossella , Ciccozzi Massimo , Galli Massimo , Zehender Gianguglielmo , Lai Alessia
Published: December 2020

In order to reconstruct the origin and pathways of variola virus (VARV) dispersion, we analyzed 47 VARV isolates available in public databases and their SNPs. The mean substitution rate of the whole genomes was 9.41x10-6 (95%HPD:8.5-11.3x10-6) substitutions/site/year. The time of the tree root was estimated to be a mean 68 years (95%HPD:60.5–75.9). The phylogeographical analysis showed that the Far East and India were the most probable locations of the tree root and of the inner nodes, respectively, whereas for the outer nodes it corresponded to the sampling locations. The Bayesian Skyline plot showed that the effective number of infections started to grow exponentially in 1915-1920, peaked in the 1940s, and then decreased to zero. Our results suggests that the VARV major strains circulating between 1940s-1970s probably shared a common ancestor originated in the Far East; subsequently moved to India, which became the center of its dispersion to eastern and southern Africa, and then to central Africa and the Middle East, probably following the movements of people between south-eastern Asia and the other places with a common colonial history. These findings may help to explain the controversial reconstructions of the history of VARV obtained using long- and short- term calibrations.
On the Size Effect of Additives in Amorphous Shape Memory Polymers
Authors: M. Zirdehi Elias , Dumlu Hakan , Eggeler Gunther , Varnik Fathollah
Published: December 2020

Thermal shape memory polymers (SMPs) find increasing applications in biology and medicine due to their promising potential for improved biocompatibility. In such applications, the inevitable penetration of small molecules from the ambient fluid into the polymer influences the shape recovery process and often leads to a reduction of the temperature, at which shape recovery takes place. We show here via molecular dynamics simulations that the size of additive molecules plays a key role for this process. While the effect of concentration on the recovery rate is monotonic in the investigated range, a non-monotonic dependence on the size of additive molecules emerges at temperatures close to the glass transition. This work thus identifies the additives’ size to be a qualitatively novel parameter for switching the recovery process in polymer-based shape memory materials.
An Egocentric Network Contact Tracing Experiment
Authors: Pilny Andrew , Huber C. Joseph
Published: December 2020

Contact tracing is one of the oldest social network health interventions used to reduce the diffusion of various infectious diseases. However, some infectious diseases like COVID-19 amass at such a great scope that traditional methods of conducting contact tracing (e.g., face-to-face interviews) remain difficult to implement, pointing the need to develop reliable and valid survey approaches. The purpose of this research is to test the effectiveness of three different egocentric survey methods for extracting contact tracing data: (1) a baseline approach, (2) a retrieval cue approach, and (3) a context-based approach. A sample of 397 college students were randomized into one of each condition and were prompted to anonymously provide contacts and populated places visited from the past four days. After controlling for various demographic, social identity, psychological, and physiological variables, participants in the context-based condition were significantly more likely recall more contacts (medium effect size) and places (large effect size) than the other two conditions. Theoretically, the research supports suggestions by field theory that assume network recall can be significantly improved by activating relevant activity foci. Practically, the research contributes to developing innovative social network data collection methods for contract tracing survey instruments.
ATmospheric LIDar (ATLID): European Space Agency Instrument Ready to Measure Aerosols and Thin Clouds in Atmosphere
Authors: Carmo João Pereira do , Villele Geraud de , Wallace Kotska , Lefebvre Alain , Ghose Kaustav , Kanitz Thomas , Chassat François , Corselle Bertrand , Belhadj Thomas , Bravetti Paolo
Published: December 2020

ATLID (ATmospheric LIDar) is the atmospheric backscatter LIDAR (Light Detection and Ranging) on board of the EarthCARE (Earth Cloud, Aerosol and Radiation Explorer) mission, the sixth Earth Explorer Mission of the ESA (European Space Agency) Living Planet Programme [1-5]. ATLID’s purpose is to provide vertical profiles of optically thin cloud and aerosol layers, as well as the altitude of cloud boundaries [6-10]. In order to achieve this objective ATLID emits short duration laser pulses in the UV, at a repetition rate of 51 Hz, while pointing in a near nadir direction along track of the satellite trajectory. The atmospheric backscatter signal is then collected by its 620 mm aperture telescope, filtered through the optics of the instrument focal plane assembly, in order to separate and measure the atmospheric Mie and Rayleigh scattering signals. With the completion of the full instrument assembly in 2019, ATLID has been subjected to an ambient performance test campaign, followed by a successful environmental qualification test campaign, including performance calibration and characterization in thermal vacuum conditions. In this paper the design and operational principle of ATLID is recalled and the major performance test results are presented, addressing the main key receiver and emitter characteristics. Finally, the estimated instrument, in-orbit, flight predictions are presented; these indicate compliance of the ALTID instrument performance against its specification and that it will meet its mission science objectives for the EarthCARE mission, to be launched in 2023.
Performance Evaluation by Measurement Combination of Loosely Coupled GPS/INS Integration
Authors: Lee Daero
Published: December 2020

This paper presents an extended Kalman filter derivation for loosely coupled GPS (Global Positioning System)/INS (Inertial Navigation System) integration based on quaternion attitude representation using the Earth-Centered Earth (ECEF) Frame. In this loosely coupling integration, both the position and velocity estimates from GPS receiver are used as the measurements to extended Kalman filter, and then they are integrated with inertial measurements from inertial measurement units (IMU) to estimate the attitude, position and velocity of an air vehicle. The velocity estimates which have centimeter level estimation error from the GPS receiver are used to improve the filter performance. For attitude estimation, the global attitude parameterization is given by a quaternion and a multiplicative quaternion-error approach is used to guarantee a normalization constraint of quaternion in the filter. Simulation results are shown to obtain the estimation of the attitude, position, velocity, biases and scale factors and to evaluate the performance of the EKF with the measurement combination composed of the two different t
Micronutrients, Non-Nutrients and Mediterranean Diet: A Potential Protective Role Against COVID-19 through Modulation of PAF Actions and Metabolism
Authors: Detopoulou Paraskevi , Demopoulos Constantinos , Antonopoulou Smaragdi
Published: December 2020

The new coronavirus disease 2019 (COVID-19) pandemic is an emerging situation with high rates of morbidity and mortality, in the pathophysiology of which inflammation and thrombosis are implicated. The disease is directly connected to the nutritional status of patients and a well-balanced diet is recommended by official sources. Recently, the role of platelet activating factor (PAF) was suggested in the pathogenesis of COVID-19. In the present review several micronutrients (vitamin A, vitamin C, vitamin E, vitamin D, selenium, omega-3 fatty acids, minerals), phytonutrients and Mediterranean diet compounds (olive oil, fish, honey, plant foods) with potential anti-COVID activity are presented. We further underline that the well-known anti-inflammatory and anti-thrombotic actions of the investigated nutrients and/ or holistic dietary schemes, such as the Mediterranean diet, are also mediated through PAF. In conclusion, although there is no single food to prevent coronavirus, the aim is to follow a healthy diet containing PAF inhibitors in order to target both inflammation and thrombosis and try to avoid or/and reduce the deleterious effects of the COVID-19 epidemic.
The Research on the Mobile Drilling Rig for Deep Seabed Shallow Strata
Authors: Ren Ziqiang , Zhou Feng , Zhu Hai , Zhang Peihao , Chen Jiawang , Zhou Peng , Tian Lieyu , Liu Chunhu , Zhang Xiaochao
Published: December 2020

At present, the drilling rig for deep seabed shallow strata is widely used in the exploration of ocean cobalt-rich crust resources and other fields, which not only can obtain solid core samples at a specific station, but the operation process is relatively safe. This paper mainly presents the structure and mechanism of mobile drilling rig in acquiring the seafloor cores (up to 1.5 m long). Based on the function of the AMESim software, the hydraulic propulsion system model of mobile drilling rig is established, which is the basis and core part of the mobile drilling rig. Moreover, the control methods of closed-loop and PID are respectively used to control the hydraulic propulsion system for simulation analysis. Through the comparison of simulation results, it is found that the PID control method is more convincing in verifying the design rationality of hydraulic propulsion system. In the simulation of the PID-controlled hydraulic propulsion system, the co-simulation technology of AMESim and Matlab/Simulink not only establishes the hydraulic model and control model, but also determines the relevant simulation parameters, which is helpful to improve the system simulation efficiency. In its verification deployment in the South China Sea, the mobile drilling rig has been operated for many times at different depths, and some cores have been successfully obtained. Furthermore, the mobile drilling rig has been used during the 55th Voyage of China Oceanic Scientific Expedition supported by China Ocean Mineral Resources R&D Association. Several sites were explored and a large number of cobalt-rich crust cores were obtained. The powerful theory and sea trails are provided to support for the further research on survey of the abyssal resource.
The Acquisition and Use of Adverbs in French as l2
Authors: Véronique Georges Daniel
Published: December 2020

The acquisition of adverbs in French as L2 (FSL) by learners with different L1s, at various levels of proficiency, has been extensively studied within various SLA projects (ESF, Interfra etc.). In the generativist tradition, it has been noted that “high category adverbs” such as those related to Mood-evaluative, Mood-epistemic and Tense are present early in FSL data. In the functionalist school, the early presence of time adverbs and scope particles in learner varieties has been analysed in relation with the informational and syntactic structures observed in these varieties and in terms of their contribution to temporal reference and other semantic domains in discourse.
Formation of professional competencies of primary school teachers using ICT
Authors: Natalia Sydorenko , Veronika Denysenko , Nataliia Borisenko , Iryna Hrytsenko
Published: December 2020

The purpose of the publication is to publish the results of a study that reveals how the intensity of the use of ICT in educational activities affects the formation of professional competencies of primary education teachers. With this in mind, the aim of the study is to establish the role of ICT in shaping the online competencies of primary school teachers, to study the content of the competency based approach and the participation of social media platforms and software applications.  The object of this study is a complex of ICTs, which actively participates in the formation of competencies of teachers of primary education. The implementation of the objectives of the study requires a set of methods and theoretical analysis and synthesis, as well as methods of comparison, grouping and specification (determination of the research data on the formation of professional competencies of primary school teachers).  The results of the research were obtained through the use of qualitative studies (standard focus groups) with subsequent analysis and report preparation. The results of the analysis are used to determine the content and interaction of key and professional competencies in the field of primary education and the high level of use of ICT tools.  Almost 80% of students aged from 20 to24 used the use of Twitter, Telegram, Facebook in remote education during the academic year 2019/2020.The presented work concludes that the use of ICT, like social media platforms, software applications, software and messenger clouds, increases the level of online competence of teachers and expands the range of professional competencies. The constant modernization of educational content based on Twitter, Telegram, Facebook, etc. should be promising for the formation of key and professional competencies and strengthening motivation in the training of primary education teachers.
Developing information search autonomy based on differentiated teaching of reading in undergraduates of Philology majors in German Language
Authors: Shovkovyi Vyacheslav M. , Druzhchenko Tetiana P. , Shovkova Tetiana A. , Tkachenko Olena H. , Semian Nataliia V.
Published: December 2020

The purpose of the study is to identify how the differentiated teaching of reading used in teaching the German Language influences the development of information search autonomy in the tertiary students majoring in Philology. The study employed quasi-experimental research that used mixed-methods to collect qualitative and quantitative data. The study was of a one-group only type. German Language proficiency, reading skills, students' self-efficacy were the variables for the study. The study found that The differentiated teaching of reading used in teaching the German Language had positively influenced the development of information search autonomy in the tertiary students majoring in Philology which was measured at the pre-treatment and post-treatment stages through the variables such as German Language proficiency, reading skills, and students’ self-efficacy. Due to the approach used in the study, the sampled students experienced a statistically significant change in all the variables. The German Language proficiency level increased by 18,1 grades, test grades in reading skills improved by 21.00 grades, and students’ self-efficacy increased by 1.53 points. The values obtained through the calculation of correlations between the variables showed a statistically significant correlation between them. There was a positive relationship between GLPT and GLRST (r=.51,p> .05); between GLP and SSE (r=71,p< .01); and between GLRS and SSE (r=.53,p> .05).
Effectiveness of using heparinoids in patients with endometrial dysfunction and concomitant undifferentiated connective tissue disease
Authors: Maslennikov А.V. , Yashchuk А.G. , Gazizova G.Kh. , Berdigulova E.F.
Published: December 2020

Objective. To study the effectiveness of heparinoid sulodexide in complex therapy of patients with endometrial dysfunction and concomitant undifferentiated connective tissue disease (UCTD). Patients and methods. We examined 88 patients with UCTD and endometrial dysfunction (the «thin endometrium» phenomenon). The therapeutic regimen of 41 patients (group 1а) additionally to cyclical therapy with 17-b estradiol and didrogesterone was supplemented by continuous heparinoid sulodexide for 3 menstrual cycles (MC), 20 patients (group 1b) in addition to cyclical therapy received the heparinoid from the 5th day of MC until the 7th day after ovulation, 27 patients of the reference group (group 2) received only cyclical therapy without heparinoid supplementation. Results. In patients of groups 1а and 1b, restoration of M-mode echo values ≥7mm was obtained in 71–73% of cases, the median endometrial thickness in group 1а increased by 2.8 mm, in group 1b – by 2.25 mm, in group 2 – only by 1.9 mm. The continuous intake of, including during menstruation, was not associated with an increase in blood loss nor changes in red blood counts. As was also found, in patients with UCTD who had algomenorrhoea with ultrasonic signs of varicose veins of the uterus administration of sulodexide resulted in a decrease of the severity of pain syndrome up to its complete disappearance. Conclusion. The treatment regimen for patients with endometrial dysfunction concomitant with UCTD НДСТ with inclusion of continuous heparinoid sulodexide (without a break during menstruation) enhances the effectiveness of therapy, does not involve a higher menstrual blood loss, and also has a positive effect on the severity of algomenorrhoea. Key words: algomenorrhoea, undifferentiated connective tissue disease, sulodexide, chronic endometritis
LITERASI PENGGUNAAN MEDIA SOSIAL SEHAT BAGI FORUM ANAK SURAKARTA
Authors: Liestyasari Siany Indria , Nurcahyono Okta Hadi , Astutik Dwi , Nurhadi Nurhadi
Published: December 2020

Gencarnya serangan media sosial dalam kehidupan manusia dewasa ini yang saat ini sungguh tidak bisa dielakkan. Berbagai persoalan dan masalah timbul seiring dengan penggunaan media sosial di masyarakat. Banyak pro dan kontra terkait dengan munculnya berbagai dampak digunakannya media sosial. Kasus-kasus pornografi, penculikan, bahkan terorisme, bullying dan body shaming di media sosial turut ditengarai karena tidak bijaknya para pengguna media sosial, khususnya para remaja. Artikel ini merupakan hasil dari program pengabdian masyarakat yang dilakukan oleh Riset Group Habitus dengan Forum Anak Surakarta. Pengabdian ini bertujuan untuk memeberikan pemahaman atau literasi kepada remaja dan anak terkait penggunaan media sosial sehat. Remaja sebagai pengguna media sosial yang paling aktif oleh karenanya perlu dibekali dengan berbagai pemahaman yang positif terkait bagaimana penggunaan media sosial yang sehat. Metode yang digunakan adalah dengan memberikan penyuluhan berupa ceramah dan diskusi. Hasil pengabdian ini menunjukkan bahwa keberadaan media sosial saat ini memang sudah menjadi kesatuan bagi anak khususnya dalam Forum Anak Kota Surakarta. Dalam kegiatan yang sudah dilakukan diperoleh hasil bahwasannya anak dalam kesehariannya banyak menggunakan waktunya untuk menggunakan media sosial. Keseharian anak sudah dibelenggu oleh keberadaan media sosial itu sendiri
Comparison of Learning Cooperative Type NHT (Numbered Heads Together) with Conventional Learning Against The Results of The Study in The Review of The Interest Students of Class X
Authors: Mayzura Ineza Ghaisani , Efendi Agus , A.G Tamrin A G
Published: December 2020

This research aims to know (1) what is the difference between the influence of the application of the learning model NHT (Numbered Heads Together) with the conventional model against the results of student learning; (2) whether there is influence of interest in student learning outcomes; (3) whether there is a iteraksi between the model of learning with student learning interest against the results of student learning. The selected sample was 72 students of class X 2017/2018 school year. This research uses descriptive types of quantitative research. Data collection is done by the spread of the question form and documentation. Data analysis variansi Analysis using two directions with the same cells. The research results obtained explains that (1) the learning approach with NHT and conventional produce learning material on the same virtual classroom (2) learning Interest of students who follow learning learning model with more NHT high compared to the interest of students who follow the conventional learning content virtual classroom discussion (3) there is no significant interaction between the approach of learning and learning interest of students towards the learning results in the subject class Maya. The students, who follow learning approach to learning that results had NHT equals celebrates student learning model with conventional lessons. High interest has more students for lessons on the virtual classroom learning model with NHT.
The Comparative Analysis of Teknolib Library Information System (Library Management System) with SLiMS (Senayan Library Management System) Based on ISO 9126
Authors: Artikatama Kholifa , Yuana Rosihan Ari , Maryono Dwi
Published: December 2020

Technology is rapidly develop in various aspects of life, especially in the field of education In the world of education, technological developments are applied to the use of library information systems. Nowadays many developers have offered the system for free, one of them is TeknoLIB and SLiMS. This study aims to measure the quality of a library information system using TeknoLIB (Library Management System) and SLiMS (Senayan Library Management System) based on ISO 9126 standards. This study uses 4 research methods, among others: questionnaires, interviews, observation, and documentation. Data analysis was obtained by grouping data from experiment result and personal observation, direct answer to resource person, giving some statement with informant consent, and giving conclusion related to library information system.It can be used as a reference for developers in building a library information system to be able to create a better system. The results of this study indicate that Information Library System TeknoLIB is more qualified in terms of system look compared to SLiMS based on ISO 9126 standards.
Development of Interactive Learning Media (Scaffolding) on Learning Materials of Stone and Concrete
Authors: Nugroho Novianto Adi , Yuana Rosihan Ari , Sucipto Taufiq Lilo Adi
Published: December 2020

This research aims to develop interactive learning media on learning materials of stone and concrete for building engineering majors in class X and knowing the feasibility based on material experts, media experts and learning practitioners assessment’s and to know the usability level of its so it can be applied on teaching and learning activities. Research methods that used in this research is research and development method’s modified with 4-D development models. These method includes 4 development phase’s namely, (1) Defining phase (Define), (2) Designing phase (Design), (3) Developing phase (Develop), (4) Disseminating phase (Disseminate). Results of the research showed that interactive learning media (scaffolding) has been successfully created with 94% of feasibility level’s, its consisting of 90,5% of material feasibilities from material expert, 92% of media feasibilities from media expert and 99,5% of learning feasibilities from learning practitioners. So, it can be concluded that interactive learning media (scaffolding) has a very feasible of feasibility levels. Results of the research also showed that interactive learning media (scaffolding) has 86% of usability levels that consisted of 88,5% of effectively component’s, 87,5% of efficiency component’s and 81% of user satisfaction component’s. So, it can be concludes that interactive learning media (scaffolding) has a very good usability levels to use by media user’s.
Application of the Kumon Learning Model with Active Learning Strategies to Improve Learning Outcomes in Simulation and Digital Communication
Authors: Nurdin Alla’ Junia , Efendi Agus , Wihidayat Endar Supri
Published: December 2020

The application of the Kumon learning model with Active Learning Strategy aims to improve learning outcomes for students of class X AXIOO SMK N 5 Surakarta on simulation and digital communication. The research began because some students experienced difficulties in learning. This research took place in two cycles, data collection techniques which consisted of tests, observations, interviews, and documentation. Data validity test techniques which used data source triangulation techniques and triangulation methods. Quantitative descriptive analysis model was used to analyse the data.  The improvement can be proven by the values of cognitive, affective and psychomotor aspects in each cycle. In the first cycle, the cognitive value of students reached 75% completeness, the completeness of students in the psychology value was 60.71%, while affective value reached 72% completeness, and final score 75 could be categorized as good. In the second cycle, the cognitive value increased 82.14% of completeness, while the psychomotor completeness was 85.71% and the affective value increased to 84% completeness and final score 90 can be categorized very well.
Keywords: active learning, classroom action research, kumon, learning outcomes, simulation and digital communication
PENERAPAN SIMULATOR CISCO PACKET TRACER DENGAN MODEL PEMBELAJARAN TEAMS GAMES TOURNAMENT UNTUK MENINGKATKAN HASIL BELAJAR DAN KEAKTIFAN JARINGAN DASAR KELAS X TKJ SMK NEGERI 1 BANYUDONO
Authors: Ardi Isnaini Anisa , Efendi Agus , Tamrin A.G
Published: December 2020

Penelitian ini bertujuan untuk mengetahui apakah (1) penerapan simulator Cisco Packet Tracer dengan model pembelajaran TGT dalam mata pelajaran Jaringan Dasar dapat meningkatkan hasil belajar siswa, (2) penerapan simulator Cisco Packet Tracer dengan model pembelajaran TGT dalam mata pelajaran Jaringan Dasar dapat meningkatkan keaktifan siswa. Jenis penelitian ini adalah Penelitian Tindakan Kelas. Penelitian ini terdiri dari 2 siklus, dengan masing-masing siklus terdiri dari beberapa tahap yakni perencanaan, pelaksanaan tindakan, observasi, dan refleksi yang dimulai dari bulan April sampai Mei 2016. Subjek penelitian ini adalah siswa kelas X TKJ 1 Sekolah Menengah Kejuruan Negeri 1 Banyudono tahun ajaran 2015/2016 yang berjumlah 33 siswa. Teknik pengumpulan data meliputi observasi, tes, wawancara dan dokumentasi. Validasi data dilakukan dengan cara triangulasi. Analisis data kualitatif dilakukan dengan teknik analisis kritis yang terdiri dari reduksi, penyajian, verifikasi, penarikan kesimpulan, sedangkan data kuantitatif dianalisis dengan teknik statistik deskriptif komparatif. Hasil penelitian menunjukkan bahwa penerapan simulator Cisco Packet Tracer dengan model pembelajaran TGT dalam mata pelajaran Jaringan Dasar dapat meningkatkan hasil belajar siswa. Peningkatan persentase ketuntasan hasil belajar siswa ranah kognitif dari pra tindakan 24,24%, siklus I 60,61%, dan siklus II 75,76%. Peningkatan persentase ketuntasan hasil belajar siswa ranah afektif dari pra tindakan 51,52%, siklus I 75,76%, dan siklus II 87,88%. Peningkatan persentase ketuntasan hasil belajar siswa ranah psikomotorik dari pra tindakan 24,24%, siklus I 72,73%, dan siklus II 84,85%. Penerapan simulator Cisco Packet Tracer dengan model pembelajaran TGT dalam mata pelajaran Jaringan Dasar dapat meningkatkan keaktifan siswa. Peningkatan persentase keaktifan kelas dari pra tindakan 33,94%, siklus I 68,48%, dan siklus II 77,58%. Berdasarkan hasil penelitian, dapat disimpulkan bahwa penerapan simulator Cisco Packet Tracer dengan model pembelajaran TGT dalam mata pelajaran Jaringan Dasar dapat meningkatkan hasil belajar dan keaktifan siswa kelas X TKJ 1 SMK Negeri 1 Banyudono tahun ajaran 2015/2016.

 

Kata Kunci: Teams Games Tournament, hasil belajar kognitif, hasil belajar afektif, hasil belajar psikomotorik, keaktifan  
PENERAPAN PROJECT BASED LEARNING UNTUK MENINGKATKAN AKTIVITAS DAN KOMPETENSI INSTALASI SISTEM OPERASI BERBASIS GUI DAN CLI PADA SISWA KELAS X TKJ DI SMK N 1 SAWIT
Authors: Handayaningtyas Pinasti Nur , Basori Basori , Tamrin A.G
Published: December 2020

Penelitian ini bertujuan untuk mengetahui apakah penerapan project   based learning dapat meningkatkan aktivitas dan kompetensi belajar siswa dalam Instalasi Sistem Operasi Berbasis GUI ( Graphical User Interface) dan CLI ( Command Line Interface)  kelas X TKJ SMK N 1 Sawit. Penelitian ini menggunakan metode Penelitian Tindakan Kelas (PTK) yang dilaksanakan sebanyak dua siklus dimana masing – masing siklus dilakukan dengan empat tahapan, yaitu : (1) tindakan perencanaan; (2) tindakan pelaksanaan; (3) tindakan observasi; dan (4) refleksi. Subjek penelitian adalah siswa kelas X TKJ 3 di SMK N 1 Sawit sebanyak 34 siswa. Penelitian ini dilaksanakan dengan kolaborasi antara peneliti, guru, observer dan melibatkan partisipasi siswa. Teknik pengumpulan data menggunakan lembar observasi, wawancara, instrumen tes dan teknik analisis data. Berdasarkan hasil penelitian, dapat disimpulkan bahwa penerapan project   based learning dapat meningkatkan aktivitas dan kompetensi instalasi sistem operasi berbasis GUI dan CLI. Hal ini terbukti dari fakta – fakta hasil sebagai berikut : (1) Aktivitas siswa dalam mengikuti pembelajaran mengalami peningkatan pada pra siklus sebesar 32,35% menjadi 58,82% pada siklus I dan pada siklus II meningkat menjadi 82,35%. (2) Kompetensi siswa dalam pembelajaran terdisi dari 3 ranah yaitu masing – masing ranah meengalami peningkatan sebagai berikut : (a) Ranah Kognitif  dari pra siklus sebesar 11,76% menjadi 26,47% pada siklus I dan siklus II meningkat menjadi sebesar 47,05%. (b) Ranah Afektif dari pra siklus sebesar 32,35% menjadi 53,29% pada siklus I dan pada siklus II meningkat menjadi sebesar 76,47%. (c) Ranah Psikomotorik dari pra siklus sebesar 44,11% menjadi 79,41% pada siklus I dan pada siklus II meningkat menjadi 82,35%.

 Kata kunci : Project   based learning, Aktivitas dan Kompetensi, Instalasi Sistem Operasi Berbasis GUI (Graphical User Interface) dan CLI ( Command Line Interface
RANCANG BANGUN APLIKASI PEMBUATAN LAPORAN PRAKTIKUM BERBASIS WEB PADA SMK
Authors: Khusnia Riezka Layli , Tamrin A.G , Efendi Agus
Published: December 2020

Penelitian ini bertujuan untuk membangun aplikasi pembuatan laporan praktikum yang berguna untuk memudahkan siswa dalam membuat laporan praktikum. Aplikasi ini dibuat untuk digunakan di lembaga pendidikan, terutama pada siswa Sekolah Menengah Kejuruan (SMK) yang sering terjun untuk melakukan praktik. Aplikasi ini berbasis web yang langsung terkoneksi dengan guru, sehingga hasil laporan siswa dapat dilihat dan dinilai oleh guru. Metode yang digunakan dalam penelitian ini adalah metode penelitian dan pengembangan (R&D) menggunakan model pengembangan Borg & Gall. Penelitian ini dilaksanakan di SMK Negeri 1 Sawit. Teknik pengumpulan data yaitu melalui wawancara, menyebarkan lembar penilaian dan dokumentasi. Rancang bangun aplikasi pembuatan laporan praktikum berbasis web pada SMK melalui sepuluh tahap yaitu: (1) Potensi dan masalah. (2) Pengumpulan data. (3) Desain produk, berupa membuat rancangan use case diagram, flowchart, DFD, ERD, pembuatan desain tampilan, pembuatan basis data dan pembuatan aplikasi. (4) Validasi desain, berupa pengujian yang dilakukan oleh ahli media. (5) Revisi desain, yaitu revisi dari ahli media. (6) Uji coba produk, berupa pengujian perorangan. (7) Revisi produk, yaitu revisi tahap I. (8) Uji coba pemakaian,  berupa pengujian oleh kelompok kecil. (9) Revisi produk, yaitu revisi tahap II.  (10) Produk akhir aplikasi, yaitu hasil akhir aplikasi pembuatan laporan praktikum berbasis web pada SMK. Hasil penelitian dari aplikasi pembuatan laporan praktikum mendapatkan nilai dalam bentuk persentase sebesar 89% dari ahli media, 91% dari kelompok kecil dan 81% dari kelompok luas. Sehingga, aplikasi pembuatan laporan praktikum berbasis web pada SMK masuk dalam kategori sangat layak digunakan dalam pembuatan laporan praktikum.

Kata Kunci: praktik, laporan praktikum, SMK, berbasis web
КЛИНИКО-ЛАБОРАТОРНЫЕ ОСОБЕННОСТИ COVID-19 У ГОСПИТАЛИЗИРОВАННЫХ ДЕТЕЙ
Authors: Мелехина Елена , Николаева Светлана , Музыка Анна , Понежева Жанна , Ильинская Анастасия , Крапивкин Алексей , Солдатова Евгения , Горелов Александр
Published: December 2020

Цель – выявление основных клинико-лабораторных признаков COVID-19, позволяющих дифференцировать COVID-19 и сезонные ОРИ у детей. Пациенты и методы. Проанализированы истории болезни 44 госпитализированных пациентов (24 мальчиков, 20 девочек) 1-17 лет с симптомами острой респираторной инфекции (ОРИ). Для верификации диагноза определяли РНК SARS-CoV-2 в назофарингеальных мазках (ПЦР), антитела IgM, IgG к SARS-CoV-2 (ИФА), маркеры герпесвирусных, респираторных инфекций, респираторных микоплазмоза и хламидиоза. Статистический анализ проведен с использованием программы IBM SPSS Statistics 26. При расчетах использовали t-критерий Стьюдента, критерий χ2 Пирсона, U-критерий Манна-Уитни, точный критерий Фишера. Различия показателей считались статистически значимыми при p<0,05. Результаты. В 1 группу включили 17 детей (39%), у которых выявили РНК вируса SARS-CoV-2 в мазках из ротоглотки, группу сравнения составили 27 детей (41%), у которых не выявили SARS-CoV-2. Мы определили, что пациенты с ОРИ достоверно чаще жаловались на кашель (р=0,04), а пациенты с COVID-19 – на боли в горле (р=0,01). Температура одинаково часто повышалась у детей обеих групп. Патология нижних дыхательных путей чаще наблюдалась у пациентов с ОРИ (р=0,005). Заключение. COVID-19 у госпитализированных детей не имеет специфических клинических и лабораторных признаков, что затрудняет дифференциальную диагностику с сезонными ОРИ. Частое выявление сочетанных респираторных инфекций у детей с COVID-19 делает целесообразным проведение скринингового обследования на основные респираторные патогены.
Evaluation of thin flexible pavements under simulated aircraft traffic
Authors: Robinson W.
Published: December 2020

A full-scale airfield pavement test section was constructed and trafficked by the U.S. Army Engineer Research and Development Center (ERDC) to evaluate the performance of relatively thin airfield pavement structures. The test section consisted of 16 test items that included three asphalt pavement thicknesses and two different aggregate base courses. The test items were subjected to simulated aircraft traffic to evaluate their response and performance to realistic aircraft loads and to evaluate the effect of reductions in tire pressure on thin asphalt pavement. Rutting behavior, pavement cracking, instrumentation response, and falling weight deflectometer response were monitored at selected traffic intervals. The results of this study were used to extend existing Department of Defense pavement design and evaluation techniques to include the evaluation of airfield pavement sections that do not meet the current criteria for aggregate base quality and minimum asphalt concrete surface thickness. These performance data were used to develop new aggregate base failure design curves using existing stress-based design methodology.
DO ISLAMIC EQUITY STYLE INDICES CONTAIN ECONOMIC INFORMATION?
Authors: Shaharuddin Shahrin Saaid , Lau Wee-Yeap , Yip Tien-Ming
Published: December 2020

This study aims to investigate whether the Islamic equity style index containseconomic information which is useful for investors and financial practitioners. Thestudy fills the gap in the previous literature by investigating the relationshipbetween Islamic equity style indices and macroeconomic variables. Using aVector Autoregressive (VAR) model with monthly data from June 2006 to May2017, our results show that first, there is unidirectional flow of information fromLarge Growth (LG) to the Leading Economic Indicator (LEI); second, LargeGrowth (LG) Granger-causes the Kuala Lumpur Composite Index (KLCI); third,Large Value (LV) also Granger-causes KLCI. A robustness check with anAugmented VAR model obtained similar results to the short-run model. Ourresults imply that equity style indices have prior information which is faster thanLEI and KLCI. This knowledge is certainly useful for fund managers whendesigning Shariah-compliant portfolio investments. For policymakers, Islamicequity style indices are useful for predicting the direction of other macroeconomicvariables such as business cycles, and hence help to predict the future directionand turning points in the economy.
INVESTIGATING VOLATILITY BEHAVIOUR: EMPIRICAL EVIDENCE FROM ISLAMIC STOCK INDICES
Authors: Burhanuddin Burhanuddin
Published: December 2020

The main purpose of this research is to apply five univariate GARCH models to thedaily stock returns of four major sharia stock indices. Two symmetric versions of theGARCH model (GARCH and MGARCH) and three asymmetric versions (EGARCH,TGARCH and PGARCH) are employed to estimate and forecast the volatility of fourmajor sharia indices. The results provide strong evidence that all models can depictthe volatility behaviours in all four sharia index returns. The two symmetric modelsindicate that the volatility of a sharia index’s returns depend on its previous own lags,and statistically prove that a rise in volatility (risk) leads to an increase in mean(return), i.e. the risk premium effect. Meanwhile, the three asymmetric modelssuggest that negative shocks to daily returns tend to have higher impact on thevolatility of sharia indices than positive shocks of the same magnitude. Moreover,based on the values of forecasting errors – root mean square errors (RMSE) andmean absolute errors (MAE) – the asymmetric GARCH models outperform thesymmetric models in forecasting the volatility of four major sharia indices. However,the very small difference values of RMSE and MAE among the univariate GARCH-type models denote that no single model is superior to the others.
Rethinking the politics of vulnerability: neighborhood empowerment in Kansas City Missouri (USA)
Authors: Wagner Jacob
Published: December 2020

The paper provides evidence for the racialization of urban neighborhoods in Kansas City Missouri, USA and the ways in which voluntary associations of citizens work to resist and reduce conditions of urban vulnerability. The paper presents data from historical patterns of racially-biased real estate practices, including redlining, and demonstrates how these patterns continue to shape the politics of vulnerability in the region today. Three neighborhood profiles provide evidence of the ways in which local neighborhood associations are organized to respond to both social and spatial conditions of vulnerability. In contrast to the estimates of low community resilience in these neighborhoods, the author demonstrates that neighborhood empowerment is an important counterpoint to concentrated vulnerabilities.
TOPICAL APPLICATION OF Capsicum frutescens LEAF EXTRACT AS HAIR TONIC IN MICE (Mus musculus)
Authors: Safrida Safrida , Nasmi Shella , Syafrianti Devi
Published: December 2020

The research aims to determine the effect of giving cayenne leaf extract in increasing the length and amount of hair on mice. This research belongs to the type of quantitative research. This research used a Completely Randomized Design (CRD) in consisting of 5 treatment and 4 repetitions. The treatments consisted of NC (negative control, not treated), PC (positive control, given a commercial hair extract), P1 (cayenne leaf extract 10%), P2 (cayenne leaf extract 20%), and P3 (cayenne leaf extract 30%). Research parameters included the increase of the hair length and amount of hairs growing in mice. The result showed that giving extract of cayenne leaf significantly influences the length and amount of hairs in mice, with 10% concentration (P2) was the optimum concentration of the extract that can trigger the hair growth. It can be concluded that given extract of cayenne leaf can increase the hairs growth in mice and has potential as hair tonic.
Pulmonary cavitation in patients with thyroid cancer receiving antiangiogenic agents
Authors: Datar Saumil , Cabanillas Maria , Dadu Ramona , Ost David , Grosu Horiana
Published: December 2020

Background: Thyroid malignancies are among the most common endocrine cancers worldwide. Owing to the angiogenic nature of these malignancies, tyrosine kinase inhibitors (TKIs) are an attractive potential treatment. However, TKIs have been associated with an increased risk of tumor cavitation, in turn linked to poor outcomes, in patients with malignancies in the lungs, where thyroid cancer commonly metastasizes. Method: We performed a retrospective cohort study of patients with thyroid cancer and evidence of metastatic disease to the lung that were treated with multi-targeted antiangiogenic TKIs. The primary objective of this study was to determine the incidence of pulmonary cavitation. The secondary objective was to evaluate the effect of pulmonary cavitation on survival. Results: Of the 83 patients with pulmonary nodules,10 developed cavitation during treatment. Of these 83 patients, two patients had to stop the treatment due to pneumothorax. Additionally, cavitation did not demonstrate any significant effect on survival. Conclusion: In patients with thyroid cancer and evidence of metastatic disease to the chest, the use of multi-targeted TKIs led to cavitations that were not uncommon but clinical consequences were marginal. Treatment was stopped only in two patients that developed pneumothorax, however the small sample is a strong limitation of our study.
Unmet supportive care needs and associated factors among young adult cancer patients in Japan
Authors: Okamura Masako , Fujimori Maiko , Sato Ayako , Uchitomi Yosuke
Published: December 2020

Background: Young adult cancer patients often face unique challenges and have potential unmet needs. This study aimed (1) to describe unmet supportive care needs among young adults with cancer in Japan, and (2) to identify its associated factors.Methods: In a cross-sectional web-based survey, 206 young adults with cancer were assessed for supportive care needs. Multiple regression analysis examined whether demographics, clinical variables and social support were associated with unmet supportive care needs.Results: A total of 206 patients (180 female) with a mean age of 33.7 years (SD=4.3, range: 22-39) participated. One hundred and fifty-eight participants (76.7%) reported at least one unmet supportive care needs. The top 20 unmet needs included 9 of the 10 psychological needs, 3 of the 5 physical and daily living needs, 8 of the 11 health system and information needs and 1 of the 5 sexuality needs. Multiple regression analysis revealed that perceived poorer PS, experience of change in work/school after a cancer diagnosis and poor social support were significantly associated with higher supportive care needs. The total score of supportive care needs was significantly associated with both psychological distress and QOL.Conclusions: More than 70% of young adult cancer patients reported unmet supportive care needs and most of those were psychological needs. The findings suggest potential opportunities for intervention in addressing psychological needs rather than physical and information needs.
Trends in the utilization of youth primary healthcare services and psychological distress
Authors: Potrebny Thomas , Wiium Nora , Haugstvedt Anne , Sollesnes Ragnhild , Wold Bente , Thuen Frode
Published: December 2020

BackgroundPsychological distress among young people is increasing in Northern Europe. According to established healthcare utilization theory, this will create a greater need for youth primary healthcare and subsequently lead to more help-seeking behavior by distressed young people. The aim of this study was to investigate the association between the use of youth primary healthcare services and psychological distress in times of increasing mental health problems and increased service need.MethodsThis study consisted of five waves of repeated annual cross-sectional data collected from young people (aged 13-19) living in Norway between 2014 and 2018 (n = 368,579). Population-weighted and design-adjusted generalized linear regression with a log-link was used to examine the use of youth primary healthcare services over time. ResultsWe found that a large proportion of young people use primary healthcare services and that young people with high levels of psychological distress use primary healthcare services twice as much as their peers with low levels of psychological distress. In addition, between 2014 and 2018 both psychological distress and primary healthcare service utilization increased: psychological distress increased by 5% and total primary healthcare service use increased by 500 consultations per 1000 young people. Overall, psychological distress had a conditional association with youth primary healthcare service use and could account for between 16-66% of the change in the use of services between 2014 and 2018, depending on the service type. However, the absolute increase seen in the use of primary healthcare services was mainly driven by young people with low levels of psychological distress as opposed to young people with high psychological distress. This suggest a converging trend.ConclusionsOur findings suggest that there might be serious barriers between need and help-seeking behavior for young people with high levels of psychological distress and that the pattern of utilization among young people with lower distress may indicate overuse, possibly as an inadvertent consequence of a newly introduced school absence policy. While further research is needed to confirm these findings, our work may inform healthcare providers and policy makers about primary healthcare utilization trends among young people.