bluuebunny/crossref_metadata_2025 huggingface dataset:
MENGEMBANGKAN KEMAMPUAN KREATIVITAS MEWARNAI PADA PESERTA DIDIK USIA DINI DENGAN KEGIATAN FINGER PAINTING
Authors: FACHRURRAZI AHMAD , SETYANINGSIH ANA
Published: January 2021

This research was motivated by children using Finger Painting activities to introduce the concept of mixing colors children can develop creativity. This study was used to determine Finger Painting activities on the creativity abilities of the participants in group B of Al-Hikmah Kindergarten Surabaya. Finger Painting activities are suitable for improving children's creativity, because there are aspects of creativity that appear in Finger Painting activities that provide an opportunity for children to imagine in determining any image that their children will get a picture idea or color idea. This research was conducted in in group B TK Al-Hikmah Surabaya. The sample technique used in this study is Nonprobability sampling with a form of saturated sampling. The data collected by instruments of performance observation sheet. and analyzed with a one-group pre-test post-test design. Based on the results of data analysis which shows that the value of t-count=4.20 is greater than t-table 1.734 with a significance level of 0.05 and 2.552 at the 0.01 significance level with N=19 which means the null hypothesis (Ho) is rejected and the working hypothesis (Hl) is accepted. It can be concluded that Finger Painting activities can influence to the childrenâ€™s coloring creativity.
TEKNIK LATIHAN SKIPPING UNTUK MENINGKATKAN LONCATAN SMASH DALAM PERMAINAN BULU TANGKIS
Authors: PAMBUDI SUKO
Published: January 2021

Salah satu materi dalam mata pelajaran Penjaskes, yaitu bulu tangkis. Bulu tangkis merupakan olah raga dengan menggunakan raket dan kok, serta net dan dimainkan 2 orang/4 orang yang di antaranya saling berlawanan. Penelitian ini mengambil materi bulu tangkis tersebut yang memang masih banyak kendala, terutama pada kelas IX di UPTD SMPN 1 Ngadiluwih Kabupaten Kediri. Kendala terdapat pada lompatan smash yang rata-rata siswa mempunyai lompatan kurang tinggi. Teknik untuk mengatasi kendala tersebut menggunakan skipping yang akan diberikaan kepada siswa sebanyak 3 tahap (prasiklus, siklus 1, dan siklus 2). Berdasarkan hal tersebut, artikel ini merupakan pemadatan dari penelitian berjenis PTK. Penelitian ini menggunakan model spiral dari Kemmis dan Taggart yang dikembangkan oleh Stephen Kemmis dan Robbin Mc Taggart. Penelitiaan ini bertujuan menjelaskan teknik latihan skipping untuk meningkatkan loncatan smash dalam permainan bulu tangkis. Berdasarkan hipotesis data penelitian terlihat bahwa pada tahap prasiklus terdapat 39% (7) siswa putra yang tuntas dan 40% (8) siswa putri yang tuntas. Kemudian pada tahap selanjutnya siklus I terdapat 50% (9) siswa putra yang tuntas dan 55 (11) siswa putri yang tuntas. Kemudian pada tahap siklus 2 terdapat 78% (14) siswa putra yang tuntas dan 75% (15) siswa putri yang tuntas. Berdasarkan data tersebut maka keberhasilan penelitian terjadi pada siklus 2.
THE EFFECTIVENESS OF FLASHCARDS IN TEACHING VOCABULARY FOR SEVENTH GRADE STUDENTS OF SMP WAHIDIYAH KEDIRI
Authors: MA'RIFAH LATHIFAH NUR , SUHAIMI IMAM
Published: January 2021

This research is generally to find out the differences in the English vocabulary ability between students are taught by using Flashcards and those are not taught by using Flashcards for seventh grade students of SMP Wahidiyah Kediri. The research applied in Experiment Class and Control Class. The instruments for collecting the data were interview, field note, Pre-test and Post-test. The researcher uses Quasi-experiment and uses quantitative method with analyzed the data by using T-test. The result shows that there is significance different between students are taught by using Flashcards and those are taught by using TPS (Think Pair Share). The data analysis shows that Tcount >Ttable (4,330 > 1,664), Ha is accepted. In Pre-test, the average score of Experiment Class is 62, 44 and Control Class is 72, 79. In Post-test, the average score of Experiment Class is 83, 49 and Control Class is 69. The result shows that the average score of Experiment Class is higher than Control Class in Post-test.
PENGENALAN KONSEP BERAT-RINGAN BENDA MENGGUNAKAN PEMBELAJARAN LANGSUNG UNTUK MENINGKATKAN KEMAMPUAN BERHITUNG ANAK TUNARUNGU KELAS I DI SLB NEGERI CERME GRESIK
Authors: SETYANINGSIH JULI
Published: January 2021

Penelitian ini bertujuan untuk mendeskripsikan tingkat kemampuan mengenal konsep berat-ringan benda siswa tunarungu dengan menggunakan pembelajaran langsung. Penelitian ini terdiri dari dua siklus yang melibatkan siswa kelas I B semester 1 SLB Negeri Cerme Gresik tahun pelajaran 2016/2017. Penelitian ini menggunakan instrumen berupa lembar observasi dan tes tulis dan observasi dilakukan pada setiap proses pembelajaran. Hasil penelitian menunjukkan bahwa pada siklus I diperoleh nilai rata-rata hasil belajar sebesar 55%. Pada siklus ke II terjadi peningkatan dan diperoleh nilai rata-rata hasil belajar sebesar 80,13%. Hal ini mengindikasikan bahwa penggunaan pembelajaran langsung dapat meningkatkan kemampuan mengenal konsep berat-ringan benda pada siswa tunarungu kelas I SLB Negeri Cerme Gresik Tahun Pelajaran 2016/2017.

 

Kata Kunci: pembelajaran langsung, konsep berat-ringan benda, siswa tunarungu
ANALISIS PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE TEAMS GAMES TOURNAMENT (TGT) DAN LEARNING TOGETHER (LT) TERHADAP HASIL BELAJAR SISWA SEKOLAH DASAR (SD)
Authors: Nuriana Nia Fibria
Published: January 2021

This study aims to determine the student learning outcomes using cooperative learning type Teams Games Tournament (TGT) and Learning Together (LT). This theoretical study is a systematic mapping study or study letarature. Student learning outcomes in the study of this theory are seen from the mathematics learning outcomes of elementary school (SD) students who use the cooperative learning model of the Teams Games Tournament (TGT) and Learning Together (LT) types. The results of the theoretical study show that there are differences in student learning outcomes that use the Teams Games Tournament (TGT) type of cooperative learning model, but they are not significant. While the results of the study of student learning outcomes theory using the cooperative learning model type Learning Together (LT) showed significant similarities. The results of the theoretical study can be concluded that in general student mathematics learning outcomes with the application of cooperative learning models of the Teams Games Tournament (TGT) and Learning Together (LT) experience a significant increase.
PENGARUH MODEL PROJECT BASED LEARNING TERHADAP MOTIVASI BELAJAR SISWA
Authors: Pangesti Widya Ayu , Fanani Achmad , Prastyo Danang
Published: January 2021

Penelitian ini bertujuan untuk mengetahui ada tidaknya pengaruh model pembelajaran berbasis proyek terhadap motivasi belajar siswa kelas III SDN Keboananom Sidoarjo, dengan menggunakan teknik cluster sampling yaitu kelas III-B sebagai kelas kontrol dan III-C sebagai kelas kontrol. kelas eksperimen. Teknik pengumpulan data menggunakan angket siswa. Teknik analisis data menggunakan statistik inferensial non parametrik dengan menggunakan SPSS. Hasil homogenitas penelitian diperoleh nilai sig 0,297> 0,05 yang artinya data homogen, uji normalitas pada kelas kontrol sig 0,04 <0,05 dan normalitas kelas eksperimen sig 0,02 <0,05, maka disimpulkan data tidak berdistribusi normal . Hasil uji hipotesis diperoleh Sig. (2-tailed) 0,000 <0,05 sehingga H_O ditolak, sehingga dapat disimpulkan bahwa terdapat pengaruh model pembelajaran Project Based Learning terhadap motivasi belajar siswa kelas III SDN Keboan Anom Sidoarjo.
PENERAPAN LESSON STUDY PADA MATA KULIAH PRAKTIKUM MIKRO KONSELING REALITA
Authors: Lathifah Maghfirotul
Published: January 2021

Lesson study is a structured process adapted from Japan that enables to plan, observe, analyze, and define actual classroom lesson. This study aims to enable students to practice counseling with reality approach. The research used qualitative descriptive method with the following stages. (a) plan; (b) do; (c) see. The results showed that the achievement of learning practicum micro counseling reality by applying lesson study reached 80%. The findings of this study are expected to explore and open educators that will learn from a lesson.

Lesson study adalah proses terstruktur dari Jepang yang memungkinkan untuk merencanakan, mengamati, menganalisa, dan mendefinisikan fakta pembelajaran di kelas. Penelitian ini bertujuan agar mahasiswa mampu mempraktikan konseling dengan pendekatan realita. Penelitian menggunakan metode deskriptif kualitatif dengan tahapan sebagai berikut. (a) perencanaan atau plan; (b) pelaksanaan atau do; (c) refleksi atau see. Hasil penelitian menunjukkan bahwa ketercapaian pembelajaran praktikum mikro konseling realita dengan menrapkan lesson study tercapai sebesar 80%. Temuan penelitian ini diharapkan dapat mengeksplorasi dan membuka pendidik bahwa pendidik akan belajar dari suatu pembelajaran.

Kata kunci: Lesson study, Praktikum mikro konseling,  Realita
MENINGKATKAN RASA EMPATI MELALUI BIMBINGAN KELOMPOK DENGAN TEKNIK BERMAIN PERAN (ROLE PLAYING) SISWA KELAS XI TKJ 3 DI SMK NEGERI 1 PACITAN TAHUN PELAJARAN 2020/2021
Authors: Diana Mayasari  , Siti Mardiana Hindayati  , Fitriana Dyah Wulandari  , Etik Sulistyowati  , Fitrah Romadhoni Laily
Published: January 2021

Penelitian ini memakai metode bermain peran guna tingkatkan sikap siswa yang kurang mempunyai rasa empati. Penelitian ini memakai pendekatan kualitatif guna memperoleh informasi serta analisis lewat kajian- kajian reflektif, partisipasif. Pengembangan program didasarkan datadata serta data dari siswa dan setting sosial secara alamiah lewat 2 tahapan siklus penelitian tindakan. Guna meningkatkan rasa empati siswa dicoba dengan memakai metode role playing.Penelitian ini dicoba di kelas XI TKJ 3 SMK Negeri 1 Pacitan dengan 2 siklus. Pada siklus awal siswa belum bersungguh- sungguh dalam melaksanakan aktivitas, sehingga butuh dipaparkan lagi manfaat bermain peran ini, sehingga butuh diulang lagi sampai siklus kedua. Dari hasil observasi, kegiatan siswa dari 68% pada siklus awal, bertambah jadi 86% pada siklus kedua. Dengan demikian metode bermain peran dapat digunakan buat menaikkan empati siswa di kelas XI TKJ 3 SMK Negeri 1 Pacitan.
UPAYA MENGATASI PELANGGARAN TATA TERTIB SEKOLAH MELALUI KONSELING INDIVIDU TEKNIK RASIONAL EMOTIF BEHAVIOR PADA SISWA KELAS XI IPS 2 SMA NEGERI 2 PACITAN TAHUN PELAJARAN 2019/2020
Authors: Dwi Noviarini  , Trikayani  , Mudho Eko Prambudiono  , Akhmad Baihaqi  , Riyanti Utami
Published: January 2021

Kegiatan penelitian memiliki tujuan untuk mengatasi Pelanggaran tata tertib sekolah melalui efektifitas konseling individu dengan teknik Rasional Emotif Behavior pada siswa kelas XI IPS 2 SMA Negeri 2 Pacitan. Adapun yang merupakan subyek dari kegiatan penelitian Tindakan Kelas ini adalah siswa kelas XI IPS 2 SMA Negeri 2 Pacitan, dengan jumlah siswa 32 anak adapun yang dijadikan klien dalam Konseling individu mengunankan teknik Rational Emotif Behavior sebanyak 10 siswa. Hasil Analsisi siklus 1 sebelum diadakan konseling individu yaitu sebesar 80% dan hasil siklus 2 setelah diadakan konseling individu sebesar 60%. Hal ini menunjukkan bahwa ada peningkatan kearah positif. Meskipun selisih hasil tes pertama dan kedua hanya 20%. Terdapat keterangan bahwa Semakin tinggi skor yang diperoleh maka, semakin rendah perilaku  melanggar tata tertib sekolah yang dilakukan oleh siswa 10 siswa/konseli yang dijadikan observasi secara langsung yang dilakukan di kelas.
A CORRELATIONAL STUDYON THEIMPACT OF STUDENTSâ€™ ENGLISH ACHIEVEMENT ON STUDENTSâ€™ RESIDENCE
Authors: Putra Muhammad Iqbal Ripo , . Sulaiman
Published: January 2021

The purposes of this research are to reveal: (1) the studentsâ€˜English achievement; (2) the relationship between studentsâ€˜ residenceand studentsâ€˜ English achievement; and (3) the significant relationshipbetween studentsâ€˜ residence and studentsâ€˜ English achievement. Theresearchers used correlational research design as the design of thisresearch. The population of this research is 112 students of the tenthgrade of SMAN 1 Silat Hulu and the total number of sample are 60students who are chosen by using stratified sampling technique. Theinstruments used questionnaire and documentation. Based on the resultof research finding and discussion in this research, it can be concludedthat the average of English achievement of the studentsâ€˜ who live withparents was higher than the students who live with no-relative and thereare a significant correlation between studentsâ€˜ residence and studentsâ€˜English achievement. Key word: studentsâ€Ÿ residence, studentsâ€Ÿ English achievement,      correlational research
PERANCANGAN APLIKASI REMAJA MASJID DALAM MENDUKUNG PENINGKATAN AKTIFITAS DAN KEMAMPUAN MENGENAL ILMU AGAMA
Authors: Sagira Tri
Published: January 2021

Remaja masjid merupakan organisasi yang lahir dari sebuah lembaga pengelola masjid yang memiliki peran signifikan dalam mengatasi problematika keumatan, terutama problematika digenerasinya yaitu remaja. Hadirnya organisasi Remaja Masjid menjadi harapan tersendiri ditengah masyarakat yang sibuk dengan urusan duniawi. Melalui aktifitas remaja masjid peran sertadalam mendidikkan informal terkhusus pada penanaman nilai-nilai keagamaan dapatdiberdayakan. Penelitian ini mencoba memberikan solusi positif dengan memanfaatkanperkembangan teknologi informasi. Solusi yang ditawarka dalam program kemitraan masyarakatini dicapai dengan melakukan perancangan aplikasi pembelajaran remaja masjid berbasiswebsite yang diharapkan mampu mendorong dan membantu proses pendidikan keagamaan bagianggota remaja masjid melalui aktifitas pembelajaran harian. Metode pengembangan danpelaksanaan kegiatan ini meliputi communication, planning, modelling, contruction dandeployment. Pemanfaatan aplikasi pembelajaran untuk remaja masjid ini mampu memberikankemudahan bagi pemateri untuk menyampaikan materi kajian dan dakwah, bagi pengurus remajamasjid, aplikasi ini mampu memberikan kesempatan penyebaran materi dan juga lakukan evaluasiterkait ketuntasan proses belajar dalam periode waktu tertentu dan bagi anggota remaja masjidsendiri, aplikasi ini mampu memberikan peningkatan kemampuan/ wawasan dan keilmuan tentangAgama Islam.
COMBINED USE OF TURNOVER AND PIVOT FLAP FOR DOUBLE
LAYER CLOSURE OF POSTAURICULAR FISTULA
Authors: Sharma Mukesh Kumar
Published: January 2021

ABSTRACT
Repair of post auricular stula are challenging
owing to scarred tissue and poor blood supply in
this area. Various techniques including locoregional ap cover and cavity obliteration have
been utilized to repair this complicated
problem. In our report, we introduce a novel
technique using a double layer closure utilising
local skin ap successful lasting results. Two
young adults of age 18 Male and 21 year female.
Size of stulas were ranging from 1x2 and 2x2
cm respectively in size. Once the stulous tract
was excised two aps were planned for double
layer closure of stula. First ap for inner lining
was turnover ap. Then another local pivot ap is
planned to cover the secondary defect or the
raw area. It can be either simple rotation ap as
in rst case or Limberg type local transposition
nd defect (2 case) ap. Both stulas were healed
well.
KEYWORDS : Fistula , Post auricular, Flap Closure
OTOGENIC BRAIN ABSCESS MANAGEMENT STRATEGY
: AN INSTITUTIONAL EXPERIENCE.
Authors: Manogaran Ravi Sankar
Published: January 2021

Abstract:
Otogenic brain abscess is a potentially lifethreatening complication of otitis media, which
requires a high index of suspension for prompt
diagnosis and management. This study is a
retrospective analysis of 20 cases of otogenic
brain abscess that has been managed at our
institute from 2000 to 2018. Although the
prevalence has decreased signicantly due to
the use of antibiotics, the problem still persists.
Headache, fever and vomiting are the most
common presenting symptoms. The use of
advanced imaging techniques has contributed a
lot in making the diagnosis faster. In contrast to
previous studies where the temporal lobe is the
most common site, both cerebellar and
temporal lobe involvement has been seen to
occur equally among our study population. .
Pseudomonas was found to be the most
common organism as compared to Proteus
mirabilis in most of the recent studies.
Immediate therapy with intravenous antibiotics
was found responsible for 32% of the sterile
cultures. Twelve(60%) of our patients
underwent interval mastoidectomy, of which
seven patients underwent mastoidectomy at
two weeks, and ve patients were intervened at
six weeks and rest eight were managed in the
same sitting. No change was observed in these
groups in terms of outcome after six weeks of
follow-up. Although rare brain abscess
continues to be a serious complication of otitis
media which needs immediate attention with a multidisciplinary approach.
Keywords: Brain abscess; Otogenic infection;
Otitis media; Magnetic resonance imaging;
Computed tomography
ROLE OF MACROLIDES (CLARITHROMYCIN) ON
BIOFILMS IN CHRONIC RHINOSINUSITIS
Authors: Aftab Mohd
Published: January 2021

Abstract
Background: Rhinosinusitis, a group of
disorders characterized by inammation of the
nose and paranasal sinuses can be classied as
acute, sub-acute or chronic and recurrent based
on the duration of inammation. Biolm with
formation of a physical barrier prevent
antibiotics from penetrating it. Macrolides
achieve high intracellular concentration and
have a spectrum of activity against Gram
positive cocci. This study aims to describe effect
of macrolide antibiotics (clarithromycin) on
eradication of suspected biolms in chronic
rhinosinusitis.
BRONCHOSCOPIC CRYOTHERAPY IN MANAGEMENT OF POST TRACHEOSTOMY TRACHEAL STENOSIS:
AN UNCONVENTIONAL NOVEL APPROACH
Authors: Marwah Vikas
Published: January 2021

Abstract:
Post tracheostomy / Post intubation -tracheal
stenosis is a relatively rare but a serious problem
which warrants a precise diagnosis and a
multimodality-multidisciplinary approach for
successful outcome. Traditionally, depending
upon the type and site of stenosis, such cases are
managed by open surgical approach and
occasionally by endoscopic approach with
dilatation.
We report a case, a post traumatic quadriplegic
on tracheostomy tube with suprastomal
granulation and web like brous stenosis, which
w a s m a n a g e d s u c c e s s f u l l y b y
bronchoscopiccryotherapy.Bronchoscopiccryot
herapy can be considered as primary modality
treatment in select group of cases.
Key words: bronchoscopy, cryotherapy,
cryoadhesion, suprastomal granulation,
tracheal stenosis
UNUSUAL CASE OF RETROPHARYNGEAL HEMATOMA
WITH USE OF ORAL ANTICOAGULANT THERAPY
– CASE REPORT AND REVIEW OF LITERATURE
Authors: Vallur Srujan
Published: January 2021

Abstract
Retropharyngeal space is a rare site of
spontaneous haemorrhage and the formation
of a hematoma in this location is a rarer
complication of therapy with anticoagulants.
Airway compromise can occur in rapidly
increasing retropharyngeal hematoma.
Emergent airway stabilisation is the key to a
successful management of such cases, apart
from reversal of causative factor.
W e r e p o r t a c a s e o f s p o n t a n e o u s
retropharyngeal hematoma in an elderly female
on anticoagulant therapy for Rheumatic heart
disease, and has developed rapidly progressive
swelling in neck, post bout of violent cough. She
was successfully managed with emergent
airway access and reversal of causative factors.
Keywords: Retropharyngeal hematoma,
Retropharyngeal space, Anticoagulant therapy
PENGENDALIAN DOKUMENTASI ANAK SUSUAN DALAM KALANGAN IBU SUSUAN [HANDLING OF BREASTFEEDING DOCUMENTATION AMONG BREASTFEEDING MOTHERS]
Authors: Mohamad Safir Halimatus Saadiah , Mohamad Safir Dhamirah Nursakinah , Salleh Siti Fatimah
Published: January 2021

Breastfeeding mothers documentation is a mechanism that needs to be established today. Infants who are breastfed by other women in terms of breastfeeding mothers have the effect of Islamic law on issues of Fiqh and worship. Witnessing and confession are instruments introduced by the syariah for the purpose of proving breastfeeding. In this context, the issue of expressing breast milk and commercial sale of breast milk by certain parties are increasing. It is believed that the operation of this practice has not been formally monitored by the authorities. The objective of this study was to find out the practice of documentation of breastfeeding among nursing and breastfeeding mothers. This study uses the document analysis method of the Fiqh book to see the views of scholars in breastfeeding and interviews conducted with breastfeeding mothers and nursing mothers. Studies have found that there are various ways in documentation of breastfeeding mothers. Therefore, for breastfeeding documentation due to current breastfeeding practice, the management of milk-child documentation officially need to be implemented.

Dokumentasi anak susuan merupakan mekanisma yang perlu diwujudkan pada masa kini. Bayi yang disusui oleh wanita lain dengan memenuhi syarat penyusuan memberi kesan hukum syarak dalam isu munakahat dan ibadat. Penyaksian dan pengakuan merupakan instrumen yang diperkenalkan syarak bagi tujuan pembuktian penyusuan anak susuan. Kontemporari ini, berlaku isu pengambilan susu ibu secara ekspres dan penjualan air susu ibu secara komersial oleh pihak tertentu semakin meningkat. Didapati pengendalian kepada amalan ini belum dipantau oleh pihak berkuasa secara rasmi. Objektif kajian ini adalah untuk mengetahui amalan dokumentasi penyusuan anak susuan dalam kalangan penjaga dan ibu susuan. Kajian ini menggunakan kaedah analisis dokumen terhadap kitab-kitab fiqh bagi melihat pandangan ulama terhadap penyusuan dan temubual telah dijalankan kepada ibu susuan serta penjaga anak susuan. Kajian mendapati berlaku kepelbagaian cara dokumentasi anak susuan. Justeru, bagi proses pendokumentasian anak susuan ekoran amalan pengambilan anak susuan yang berlaku pada masa kini, pengurusan dokumentasi anak susuan secara rasmi perlu dilaksanakan.
MEDIA AS PLATFORMS OF DA’WAH AMONG MUSLIM CONVERTS IN BORNEO
Authors: Salim Salinayanti
Published: January 2021

The study examined the use of media as tools of Muslim converts’ da’wah in Sabah, Sarawak and Brunei. There were two categories of media used in this study; social media (Facebook, YouTube, website, blog) and traditional media (television, radio, book, newspaper). The study interviewed 42 informants who lived in the city areas of Sabah, Sarawak and Brunei. The data obtained was arranged into themes and evaluated using descriptive and interpretive analysis approach. The study revealed that most informants partook in disseminating da’wah in media, primarily social media. The informants mostly ‘share’ the posts of others such as famous quotes and the videos of preachers. There were different levels of frequency of the informants’ posts on social media ranging from always to seldom.  A few informants however, refrained from using media as platforms to disseminate da’wah because they did not want to offend their non-Muslim ‘friends’ on Facebook, and also they believed they did not have sufficient knowledge to disseminate da’wah.
Considerations on the Plastic Structure of a UAV Payload Made by 3D Printing Technology
Authors: Grigore Lucian Stefanita , Stefan Amado-George , Orban Octavian , Adochiei Ioana-Raluca
Published: January 2021

With the development of unmanned aerial vehicle (UAV) systems for a multitude of real-time applications, 3D printing technologies have been developed to make thermoplastic structures by fusing filament Fused Deposition Modeling (FDM) or Fused Filament Fabrication (FFF). However, we consider that the realization of new technologies of experimental models / technological demonstrators / prototypes becomes profitable by using 3D printing technologies. The main aim of the paper is to highlight how the use of three types of materials, which are processed differently, influences the Von Mises stresses of the payload used for a UAV, with the mission of photographing and filming from high altitude.
Electrochemical Methods for Evaluation of Antioxidant Properties of Propolis Extract Incorporated in Chitosan Nanoparticles
Authors: Fritea Luminita , Pasca Paula Melania , Vlase Laurian , Gheldiu Ana-Maria , Moldovan Liviu , Banica Florin , Dobjanschi Luciana , Cavalu Simona
Published: January 2021

The main purpose of our study was to demonstrate the antioxidant properties of novel propolis nano-formulation, incorporated in spherical chitosan nanoparticles. The electrochemical methods (cyclic voltammetry and differential pulse voltammetry) were successfully applied to propolis extract and nanopropolis formulation, confirming that the content in phenolic acids and flavonoids is responsible for the antioxidant activity of propolis. The quantitative and qualitative results are also supported by high performance liquid chromatography (HPLC) and ultraviolet-visible (UV-Vis) spectroscopy.
Characterization of Carboxymethyl Cellulose (CMC) Synthesized from Microcellulose of Cassava Peel
Authors: Yuwono Suripto D. , Wahyuningsih Endah , Noviany  , Kiswandono Agung A. , Simanjuntak Wasinton , Hadi Sutopo
Published: January 2021

In this study, carboxymethyl cellulose (CMC) was synthesized from the cellulose of cassava peel using alkalization and etherification reaction, and it was subsequently characterized with various techniques. Microcellulose was obtained by hydrolyzing a;-cellulose from cassava peel using H2SO4 with concentrations of 45%, 47%, and 49%. The experimental results indicate that the varying concentrations of acid affect the particle size of the cellulose, with 49% H2SO4 solution producing a cellulose with particle size of around 0.45-2.42 �m and relative percentage of 11.3% according to PSA analysis. Other analyses conducted included determination of substitution degrees, DTG/DTA/TGA, FTIR, SEM, and XRD. The value of the substitution degree was determined at 0.27. TGA decomposition thermograms at a temperature of 150oC-320oC of 19.60 % indicate CMC compounds. DTA thermograms show that these CMC compounds have endothermic properties at 140oC and exothermic properties at 260oC. FTIR spectra show the presence of absorption band at wave number 1605 cm-1, which is a characteristic absorption of carbonyl group bound to cellulose. The results of SEM analysis indicate that the CMC has a tenuous surface morphology, and the XRD diffractograms are marked by the presence of weak peak at 2e = 20o, implying the existence of CMC as mostly amorphous.
El juego de "La Guayabita" como un detonador de emociones: una mirada hacia las emociones políticas
Authors: Castellanos Sosa Jorge Jhonattan
Published: January 2021

Este trabajo es una propuesta metodológica dividida en tres partes fundamentales, basada en la Investigación-Acción que analiza aspectos relacionados con las emociones matemáticas obtenidas con el juego Guayabita con Dos Dados, sentimientos que luego se redirigen hacia las Emociones Políticas que forman parte del mejoramiento de la sociedad, y al fortalecimiento de las relaciones comunales. Se tienen en cuenta elementos como la “hoja de conteo”, que ayuda a obtener información con respecto a las sumas de las caras de los lanzamientos de dos dados, cuestión que al analizarse aporta al entendimiento de conceptos probabilísticos y de técnicas de conteo.
Ensemble perception during multiple-object tracking
Authors: Alzahabi Reem , Cain Matthew S.
Published: January 2021

Multiple-object tracking studies consistently reveal attentive tracking limits of approximately three to five items. How do factors such as visual grouping and ensemble perception impact these capacity limits? Which heuristics lead to the perception of multiple objects as a group? This work investigates the role of grouping on multiple-object tracking ability, and more specifically, in identifying the heuristics that lead to the formation and perception of ensembles within dynamic contexts. First, we show that group tracking limits are approximately four groups of objects and are independent of the number of items that compose the groups. Further, we show that group tracking performance declines as inter-object spacing increases. We also demonstrate the role of group rigidity in tracking performance in that disruptions to common fate negatively impact ensemble tracking ability. The findings from this work contribute to our overall understanding of the perception of dynamic groups of objects. They characterize the properties that determine the formation and perception of dynamic object ensembles. In addition, they inform development and design decisions considering cognitive limitations involving tracking groups of objects.
Faktor-Faktor yang Mempengaruhi Kualitas Laporan Keuangan Pemerintah Daerah (Studi pada OPD Kabupaten Kampar)
Authors: Putri Ninda Riskia , Agustiawan Agustiawan
Published: January 2021

Penelitian ini bertujuan untuk mengetahui pengaruh penerapan standar akuntansi pemerintah, penerapan sistem akuntansi keuangan daerah, pemahaman akuntansi, dan teknologi informasi terhadap kualitas laporan keuangan pemerintahan daerah. Sampel penelitian adalah pegawai yang bekerja di Organisasi Perangkat Daerah (OPD) Kabupaten Kampar. Pengumpul data dilakukan dengan cara membagikan kuesioner kepada responde. Data dianalisis menggunakan regresi linier berganda. Hasil penelitian menemukan bahwa penerapan standar akuntansi pemerintah, penerapan sistem akuntansi keuangan daerah,  pemahaman akuntansi dan pemanfaatan teknologi informasi berpengaruh terhadap kualitas laporan keuangan pemerintah daerah. Temuan ini memberikan implikasi bahwa pemerintah daerah khususnya Kabupaten Kampar harus menjaga kualitas laporan keuangannya dengan menerapkan standar akuntansi secara konsisten, memanfaatkan teknologi informasi dalam pelaporan keuangan, serta terus meningkatkan pemahaman akuntansi kepada pegawainya.
The Effect of Board of Director Composition and Audit Committee Expertise on The Real Earnings Management in Indonesia
Authors: Kesaulya Feby Astrid , Putri Weny , Sri Dewi
Published: January 2021

The Objective of this research was to prove that the implementation of good corporate governance will have an effect on the real activities manipulation which was done by the management. The implementations of good governance used by this research are board of director composition and audit committee expertise. This research was conducted in Indonesia by using 306 firm years’ observations. The result of this research showed a different result from previous researches. This research showed that the implementation of good corporate governance in the form of board director composition and audit committee expertise do not impact the practice of real activities manipulation. Or, in other words some of the good corporate governance tool could not mitigate the real activities manipulation in the company.
Dampak Sikap Konsumen dan Kualitas Pelayanan terhadap Keputusan Pembelian: Atmosfer Sebagai Variabel Moderasi
Authors: Nurul Sriminarti
Published: January 2021

Atmosfer seringkali digunakan oleh pelaku bisnis restoran untuk membantu konsumen dalam keputusan pembelian konsumen. Penelitian ini berfokus kepada sikap serta kualitas pelayanan dalam perubahan perilaku konsumen yang diakibatkan oleh Covid-19, sehingga dapat mempengaruhi perilaku pasca pembelian. Sampel penelitian adalah 100 responden di wilayah Jabodetabek. Penelitian ini menggunakan metode structural equation modeling – partial least square (SEM-PLS). Hasil penelitian menunjukkan bahwa sikap konsumen berpengaruh positif dan signifikan terhadap keputusan pembelian. Kualitas pelayanan menunjukkan pengaruh positif dan signifikan terhadap keputusan pembelian. Hasil penelitian juga menemukan bahwa atmosfer dapat memoderasi kualitas pelayanan terhadap keputusan pembelian. Temuan ini memberikan implikasi bahwa atmosfer menjadi salah satu faktor yang dipertimbangkan konsumen untuk membuat keputusan pembelian.
The Role of Early Giant-planet Instability in Terrestrial Planet Formation
Authors: Nesvorný David , Roig Fernando V. , Deienno Rogerio
Published: January 2021

The terrestrial planets are believed to have formed by violent collisions of tens of lunar- to Mars-size protoplanets at time t < 200 Myr after the protoplanetary gas disk dispersal (t
0). The solar system giant planets rapidly formed during the protoplanetary disk stage and, after t
0, radially migrated by interacting with outer disk planetesimals. An early (t < 100 Myr) dynamical instability is thought to have occurred with Jupiter having gravitational encounters with a planetary-size body, jumping inward by ∼0.2–0.5 au, and landing on its current, mildly eccentric orbit. Here we investigate how the giant-planet instability affected the formation of the terrestrial planets. We study several instability cases that were previously shown to match many solar system constraints. We find that resonances with giant planets help to remove solids available for accretion near ∼1.5 au, thus stalling the growth of Mars. It does not matter, however, whether the giant planets are placed on their current orbits at t
0 or whether they realistically evolve in one of our instability models; the results are practically the same. The tight orbital spacing of Venus and Earth is difficult to reproduce in our simulations, including cases where bodies grow from a narrow annulus at 0.7–1 au, because protoplanets tend to spread radially during accretion. The best results are obtained in the narrow-annulus model when protoplanets emerging from the dispersing gas nebula are assumed to have (at least) the mass of Mars. This suggests efficient accretion of the terrestrial protoplanets during the first ∼10 Myr of the solar system.
The Hubble PanCET Program: A Metal-rich Atmosphere for the Inflated Hot Jupiter HAT-P-41b
Authors: Sheppard Kyle B. , Welbanks Luis , Mandell Avi M. , Madhusudhan Nikku , Nikolov Nikolay , Deming Drake , Henry Gregory W. , Williamson Michael H. , Sing David K. , López-Morales Mercedes , Ih Jegug , Sanz-Forcada Jorge , Lavvas Panayotis , Ballester Gilda E. , Evans Thomas M. , Muñoz Antonio García , dos Santos Leonardo A.
Published: January 2021

We present a comprehensive analysis of the 0.3–5 μm transit spectrum for the inflated hot Jupiter HAT-P-41b. The planet was observed in transit with Hubble STIS and WFC3 as part of the Hubble Panchromatic Comparative Exoplanet Treasury (PanCET) program, and we combine those data with warm Spitzer transit observations. We extract transit depths from each of the data sets, presenting the STIS transit spectrum (0.29–0.93 μm) for the first time. We retrieve the transit spectrum both with a free-chemistry retrieval suite (AURA) and a complementary chemical equilibrium retrieval suite (PLATON) to constrain the atmospheric properties at the day–night terminator. Both methods provide an excellent fit to the observed spectrum. Both AURA and PLATON retrieve a metal-rich atmosphere for almost all model assumptions (most likely O/H ratio of

and

, respectively); this is driven by a 4.9σ detection of H2O as well as evidence of gas absorption in the optical (>2.7σ detection) due to Na, AlO, and/or VO/TiO, though no individual species is strongly detected. Both retrievals determine the transit spectrum to be consistent with a clear atmosphere, with no evidence of haze or high-altitude clouds. Interior modeling constraints on the maximum atmospheric metallicity (

) favor the AURA results. The inferred elemental oxygen abundance suggests that HAT-P-41b has one of the most metal-rich atmospheres of any hot Jupiters known to date. Overall, the inferred high metallicity and high inflation make HAT-P-41b an interesting test case for planet formation theories.
MOA-2009-BLG-319Lb: A Sub-Saturn Planet inside the Predicted Mass Desert
Authors: Terry Sean K. , Bhattacharya Aparna , Bennett David P. , Beaulieu Jean-Philippe , Koshimoto Naoki , Blackman Joshua W. , Bond Ian A. , Cole Andrew A. , Henderson Calen B. , Lu Jessica R. , Marquette Jean Baptiste , Ranc Clément , Vandorou Aikaterini
Published: January 2021

We present an adaptive optics (AO) analysis of images from the Keck II telescope NIRC2 instrument of the planetary microlensing event MOA-2009-BLG-319. The ∼10 yr baseline between the event and the Keck observations allows the planetary host star to be detected at a separation of 66.5 ± 1.7 mas from the source star, consistent with the light-curve model prediction. The combination of the host star brightness and light-curve parameters yields host star and planet masses of M
host = 0.524 ± 0.048M
⊙ and m

p
 = 67.3 ± 6.2M
⊕ at a distance of D
L = 7.1 ± 0.7 kpc. The star−planet projected separation is 2.03 ± 0.21 au. The planet-to-star mass ratio of this system, q = (3.857 ± 0.029) × 10−4, places it in the predicted “planet desert” at 10−4 < q < 4 × 10−4 according to the runaway gas accretion scenario of the core accretion theory. Seven of the 30 planets in the Suzuki et al. sample fall in this mass ratio range, and this is the third with a measured host mass. All three of these host stars have masses of 0.5 ≤ M
host/M
⊙ ≤ 0.7, which implies that this predicted mass ratio gap is filled with planets that have host stars within a factor of two of 1M
⊙. This suggests that runaway gas accretion does not play a major role in determining giant planet masses for stars somewhat less massive than the Sun. Our analysis has been accomplished with a modified DAOPHOT code that has been designed to measure the brightness and positions of closely blended stars. This will aid in the development of the primary method that the Nancy Grace Roman Space Telescope mission will use to determine the masses of microlens planets and their hosts.
Phase Modeling of the TRAPPIST-1 Planetary Atmospheres
Authors: Kane Stephen R. , Jansen Tiffany , Fauchez Thomas , Selsis Franck , Ceja Alma Y.
Published: January 2021

Transiting compact multiplanet systems provide many unique opportunities to characterize the planets, including studies of size distributions, mean densities, orbital dynamics, and atmospheric compositions. The relatively short orbital periods in these systems ensure that events requiring specific orbital locations of the planets (such as primary transit and secondary eclipse points) occur with high frequency. The orbital motion and associated phase variations of the planets provide a means to constrain the atmospheric compositions through measurement of their albedos. Here we describe the expected phase variations of the TRAPPIST-1 system and times of superior conjunction when the summation of phase effects produce maximum amplitudes. We also describe the infrared flux emitted by the TRAPPIST-1 planets and the influence on the overall phase amplitudes. We further present the results from using the global circulation model ROCKE-3D to model the atmospheres of TRAPPIST-1e and TRAPPIST-1f assuming modern Earth and Archean atmospheric compositions. These simulations are used to calculate predicted phase curves for both reflected light and thermal emission components. We discuss the detectability of these signatures and the future prospects for similar studies of phase variations for relatively faint M stars.
Differential Modeling Systematics across the HR Diagram from Asteroseismic Surface Corrections
Authors: Ong 王 J. M. Joel 加冕 , Basu Sarbani , McKeever Jean M.
Published: January 2021

Localized modeling error in the near-surface layers of evolutionary stellar models causes the frequencies of their normal modes of oscillation to differ from those of actual stars with matching interior structures. These frequency differences are referred to as the asteroseismic surface term. Global stellar properties estimated via detailed constraints on individual mode frequencies have previously been shown to be robust with respect to different parameterizations of this surface term. It has also been suggested that this may be true of a broader class of nonparametric treatments. We examine systematic differences in inferred stellar properties with respect to different surface-term treatments, both for a statistically large sample of main-sequence stars, as well as for a sample of red giants, for which no such characterization has previously been done. For main-sequence stars, we demonstrate that while masses and radii, and hence ages, are indeed robust to the choice of surface term, the inferred initial helium abundance Y
0 is sensitive to the choice of surface correction. This implies that helium-abundance estimates returned from detailed asteroseismology are methodology dependent. On the other hand, for our red giant sample, nonparametric surface corrections return dramatically different inferred stellar properties than parametric ones do. The nature of these differences suggests that such nonparametric methods should be preferred for evolved stars; this should be verified on a larger sample.
Intergalactic Medium Dispersion Measures of Fast Radio Bursts Estimated from IllustrisTNG Simulation and Their Cosmological Applications
Authors: Zhang Z. J. , Yan K. , Li C. M. , Zhang G. Q. , Wang F. Y.
Published: January 2021

Fast radio bursts (FRBs) are millisecond-duration radio transients and can be used as a cosmological probe. However, the dispersion measure (DM) contributed by the intergalactic medium (IGM) is hard to distinguish from other components. In this paper, we use the IllustrisTNG simulation to realistically estimate DMIGM up to z ∼ 9. We find

pc cm−3 at z = 1. The probability distribution of DMIGM can be well fitted by a quasi-Gaussian function with a long tail. The tail is caused by structures along the line of sight in the IGM. Subtracting DM contributions from the Milky Way and host galaxy for localized FRBs, the DMIGM value is close to that given by the derived DMIGM–z relation. We also show the ability to constrain the cosmic reionization history with DMIGM of high-redshift FRBs in the IllustrisTNG universe. The derived DMIGM–z relation at high redshifts can be well fitted by a tanh reionization model with the reionization redshift z = 5.95, which is compatible with the reionization model used by the IllustrisTNG simulation. DMIGM of high-redshift FRBs also provides an independent way to measure the optical depth of the cosmic microwave background. Our result can be used to derive the pseudo-redshifts of nonlocalized FRBs for DMIGM < 4000 pc cm−3.
Rediscovery of Mazus lanceifolius reveals a new genus and a new species in Mazaceae
Authors: Xiang Chun-Lei , Pan Hong-Li , Min Dao-Zhang , Zhang Dai-Gui , Zhao Fei , Liu Bing , Li Bo
Published: January 2021

Mazus lanceifolius (Mazaceae) is a perennial herb with opposite leaves and endemic to central China that has not been collected for 130 years. Rediscovery of this enigmatic species in the wild allows for determination of its phylogenetic position within Mazaceae. Phylogenetic reconstruction of Mazaceae based on DNA sequences from four plastid markers (matK, rbcL, rps16 and trnL-trnF) and nuclear ribosome ITS consistently showed that Mazus was not monophyletic. Mazus lanceifolius is in the most basal clade within Mazaceae, as sister to the remaining species of three recognized genera Dodartia, Lancea and Mazus. These results support the separation of M. lanceifolius from Mazus as a new genus, which was established here as Puchiumazus Bo Li, D.G. Zhang & C.L. Xiang. Meanwhile, a collection from Shennongjia Forestry District of Hubei Province, China, misidentified as “M. lanceifolius” in previous molecular study, is here revealed to represent an undescribed species of Mazus, i.e., M. fruticosus Bo Li, D.G. Zhang & C.L. Xiang, sp. nov. Morphologically, Puchiumazus is clearly distinct from the other three genera by having quadrangular to somewhat ribbed stems, and obviously opposite leaves. In addition, we provide a taxonomic key to the four genera of Mazaceae.
Le système de pouvoir en Algérie, son origine et ses évolutions
Authors: Addi Lahouari
Published: January 2021

Cet article montre que l’Algérie postcoloniale a mis en place un système politique qui a sa rationalité mais qui a perdu de sa cohérence avec l’usure du pouvoir. Pendant six décennies, l’élite dirigeante se prévalait de la légitimité historique dont l’efficacité a décliné avec le renouvellement des générations. Ayant refusé l’alternance électorale, la liberté de la presse et l’autonomie de la justice, le système a évolué vers une corruption généralisée qui a concerné aussi bien les civils que les militaires. En février 2019, une protestation pacifique, appelée hirak, a éclaté à l’échelle nationale, demandant la fin du rôle politique de l’armée dans l’Etat.
Quelle contre-révolution en Tunisie et en Égypte ? L’héritage du RCD et du PND dans les systèmes partisans et le secteur de l’économie informelle
Authors: Steuer Clément , Doron Adrien
Published: January 2021

Le Rassemblement constitutionnel démocratique (RCD) en Tunisie, et le Parti national démocratique (PND) en Égypte, ont dominé la vie politique de leurs pays respectifs durant plusieurs décennies. À la veille de la révolution, ces deux partis constituaient à la fois l’espace dans lequel s’affrontaient les projets de société concurrents portés par les élites, et l’un des principaux liens entre le régime et la société. La crise de ces deux fonctions (réformatrice et clientéliste) explique l’inaptitude de ces deux formations à survivre dans le contexte d’ouverture politique consécutif à la chute des dictateurs. Dans cette perspective, leur dissolution par la justice a probablement accéléré leur dislocation plutôt qu’elle ne l’a provoquée. En effet, la lutte intestine opposant – au sein de chacune de ces deux formations – conservateurs et réformateurs s’est traduite dans ce nouveau contexte par la mise en concurrence sur le marché électoral de différents projets de restauration autoritaire ou de réformes graduelles du régime. Par ailleurs, l’absence de ligne idéologique claire manifestée par ces deux partis a favorisé la dispersion d’une partie de leur clientèle et leur réalignement sur des lignes de clivage fonctionnelles ou culturelles. Les réseaux informels liés aux anciens partis ont néanmoins su survivre dans le champ économique, au prix d’une recomposition.
(Se) nourrir ou mourir : un nouveau dilemme éthique du grand âge ?
Authors: Foureur Nicolas , Fournier Véronique
Published: January 2021

Á partir de situations que nous avons eues à connaître au Centre d’éthique clinique, nous discutons dans cet article de quelques interrogations éthiques qui nous semblent se rencontrer de plus en plus fréquemment sur le terrain, à propos de la nutrition/hydratation (NH) en contexte de fin de vie chez les personnes âgées. En gériatrie, en effet, se pose souvent la question de savoir comment et jusqu’où il convient de supplémenter les patients lorsqu’ils ne savent ou ne peuvent plus se nourrir suffisamment spontanément. Ceci tient au fait que l’espérance de vie augmente, que ces questions concernent donc de plus en plus de personnes, de plus en plus âgées, que de nouvelles techniques de supplémentation alimentaire ont été mises au point, et que les lois récentes sur la fin de vie ont rendu plus explicite le lien possible entre arrêt de NH et survenue de la mort. L’article s’emploie à mettre en lumière la complexité éthique des questions qui se posent, sans prétendre les résoudre. On s’interrogera sur ce que signifie arrêter de nourrir et d’hydrater quelqu’un, arrêter une alimentation par sonde versus une alimentation artificialisée versus une alimentation naturelle, ou encore ce que l’on peut dire de nos intentions lorsque l’on suspend toute NH chez un patient.
La difficile conversion à l’écologie de la recherche en économie
Authors: Couix Quentin , Giraud Gaël
Published: January 2021

Parce qu’elle a refusé, dans les années 1970, de modifier son cadre d’analyse pourtant remis en cause par le rapport du Club de Rome (1972), l’économie néo-classique se révèle incapable d’appréhender de manière réaliste les défis écologiques contemporains. Une approche alternative, articulée à la thermodynamique, permet cependant de comprendre comment les contraintes écologiques d’un monde fini pèsent sur la dynamique de nos économies.