bluuebunny/crossref_metadata_2025 huggingface dataset:
TINJAUAN WARNA PADA VISUAL BRANDING WARUNG KOPI LOKAL
Authors: Ulita Novena
Published: April 2020

AbstractColor Overview on Visual Branding Local Coffee Shop. Visual power is an important part of marketing strategies. Visually gives a tremendous influence on consumer purchasing decisions. Humans have a direct reaction to color and shape to improve memory of vision, recognize, and identify brands. Color can convey messages and give special reactions to the human brain. The phenomenon of drinking coffee in coffee shopsis now shifting in the community. This research uses netnographic methods related to the existence and phenomenon of local coffee shops. By taking advantage in big data that can be accessed online, visual data analyzed with color branding theory, visual branding theory and sensory branding theory. The results of this study showed the increase of the local coffee shops presence in digital information media, and the tendency of certainform, color and brand names using local term to put forward Indonesia local identity.   AbstrakTinjauan Warna pada Visual Branding Warung Kopi Lokal. Kekuatan visual menjadi bagian penting dalam strategi pemasaran. Visual memberikan pengaruh luar biasa terhadap keputusan pembelian konsumen. Manusia memiliki reaksi langsung terhadap warna dan bentuk, meningkatkan memori penglihatan, mengenali, dan mengidentifikasi brand. Warna dapat menyampaikan pesan dan memberikan reaksi khusus pada otakmanusia. Fenomena minum kopi di warung kopi saat ini sudah bergeser di masyarakat. Penelitian ini menggunakan metode netnografi terkait keberadaan dan fenomena warung kopi lokal. Dengan memanfaatkan big data yang dapat diakses secara online, data visual dianalisi menggunakan teori color branding, teori visual branding dan teori branding sensory. Hasil penelitian menunjukkan adanya peningkatan keberadaan warung kopilokal pada media informasi digital, serta kecenderungan penggunaan bentuk, warna serta penggunaan istilah lokal untuk mengedepankan identitas lokal Indonesia.
Tri- and Tetrameric Proanthocyanidins with Dentin Bioactivities from Pinus massoniana
Authors: Zhou Bin , Alania Yvette , Reis Mariana , Phansalkar Rasika , Nam Joo-Won , McAlpine James , Chen Shao-Nong , Bedran-Russo Ana K. , Pauli Guido
Published: April 2020

Guided by dentin biomechanical bioactivity, this phytochemical study led to the elucidation of an extended set of structurally demanding proanthocyanidins (PACs). Unambiguous structure determination involved detailed spectroscopic and chemical characterization of four A-type dimers (2, 4–6), seven trimers (10–16), and six tetramers (17–22). New outcomes confirm the feasibility of determining the absolute configuration of the catechol monomers in oligomeric PACs by 1D and 2D NMR. Electronic circular dichroism (ECD) as well as phloroglucinolysis followed by MS and chiral phase HPLC analysis generated the necessary chiral reference data.
A Molecular Logic Gate for the Naked-Eye Detection of Gluthatione or Pyrophosphate with a Nickel Based Bio-Sensor
Authors: Rossel Thibaud
Published: April 2020

An inorganic water soluble Ni(II) complex offers a molecular logic gate for the naked-eye detection of pyrophosphate versus thiol derivatives. Pyrocathecol coordinated to nickel performs a thiol-michael addition click reaction in the presence of thiol derivativs whereas pyrophosphate allows a displacement of the indicator PCV leading to an indicator displacement assay.
Drug Repurposing of Approved Drugs Elbasvir, Ledipasvir, Paritaprevir, Velpatasvir, Antrafenine and Ergotamine for Combating COVID19
Authors: Mevada Vishal , Dudhagara Pravin , Gandhi Himani , Vaghamshi Nilam , Beladiya Urvisha , Patel Rajesh
Published: April 2020

Pneumonia of unknown cause detected in Wuhan, China was first reported to the WHO Country Office in China on 31 December 2019. The outbreak was declared a Public Health Emergency of International Concern on 30 January 2020. Currently, there is no Vaccine against COVID-19 pandemic and infection is spreading worldwide vary rapidly there is an exigent requirement of practicable drug treatment. Drug repurposing is one of the most promising approaches for that. Many reports are available with in silico drug repurposing but the majority of them engrossed on a single target. The present study aimed at screening the approved against Covid19 protein and extract the combination of operational comprehensively. A total of 1735 drug molecules against all COVID19 protein structures and sequential screening recognize the better potential of anti-HCV drugs over anti-HIV drugs. The study designated Elbasvir, Ledipasvir, Paritaprevir, Velpatasvir, Antrafenine Ergotamin as promising drug candidates for covid19 treatment. The computational analysis also reveled the better potential of proposed drugs over the currently used drug combination for COVID19 drugs.
A Mechanism of Action for Hydroxychloroquine and Azithromycin to Inhibit Coronavirus Disease COVID-19
Authors: Schaper Charles
Published: April 2020

Hydroxychloroquine and azithromycin have clinical promise to treat COVID-19, although its mechanism of action to inhibit the replication of coronavirus is unclear. Using molecular modeling and recent discoveries made by this lab on the structure of nucleic acids, a mechanism of action is developed for hydroxychloroquine (HCQ) and azithromycin (AZR) to inhibit the replication of the coronavirus disease COVID-19. The mechanism involves: (1) binding the Cl end-element of HCQ through ionic means to adjacent phosphate groups of the uracil nucleotide; (2) forming an intermolecular hydrogen bond of an NH group of HCQ to an open oxygen element of uracil; (3) binding OH end group of HCQ through ionic means with adjacent phosphate groups of the adenine nucleotide. The mechanism of action is extended to AZR as a drug delivery vector that collects HCQ and two ions of positive two charge, such as Mg2+, Zn2+ or Ca2+, and delivers the assembly to a secondary structure of single-strand RNA. As with HCQ, the structural biology of AZR is compatible for use as a collection and delivery vesicle including: (1) open access for the Cl end element and the NH group of HCQ to align and bind with Uracil, and (2) the ability to deliver and bind through ionic coupling of the OH end group of HCQ to the adenine nucleotide. The molecular ionic attachment of HCQ to RNA nucleotides enabled by AZR results in the inhibition of the replication capability of the coronavirus disease COVID-19.
Squeezing Bi: PNP and P2N3 Pincer Complexes of Bismuth(III
Authors: Kindervater Marcus B. , Hynes Toren , Marczenko Katherine , Chitnis Saurabh
Published: April 2020

We report the first application of a rigid P2N3 pincer ligand in p-block chemistry by preparing its bismuth complex. We also report the first example of bismuth complexes featuring a flexible PNP pincer ligand, which shows phase-dependent structural dynamics. Highly electrophilic, albeit thermally unstable, Bi(III) complexes of the PNP ligand were also prepared.
Counter-Currently Operated Reactive Extractor with Additively Manufactured Enzyme Carrier Structure
Authors: Büscher Niclas , Spille Claas , Kracht John , Sayogo Giovanni , Dawood Ayad , Maiwald Maria , Herzog Dirk , Schlüter Michael , Liese Andreas
Published: April 2020

The development of continuous flow reactors for heterogeneous chemical or biochemical reactions raises the question of efficient mixing and catalyst immobilization. Especially, in those cases where hybrid reactor concepts are aimed at, combining of reaction and extraction in one apparatus requires a solution for reaction and extraction phase distribution and immobilization concepts. Precisely designed structures inserted as reactor packings can be used to control the multiphase hydrodynamics and to act as a catalyst carrier simultaneously. However, the decision for the most suitable structure for specific reaction systems remains a challenge. While numerical simulations with computational fluid dynamics (CFD) has limitations regarding the complex interactions in multiphase flows, performing experiments using rapid prototyping (RP) offers the possibility of a fast fabrication and verification of tailor-made structures for specific flow characteristics, efficient mass transport and high conversion rates. Additionally, RP can be used to quickly approve results from CFD simulations in experiments. In the presented work the development of a counter-currently (CC) operated additively manufactured reactor (AMR) for the decarboxylation of ferulic acid (FA) to 2-metoxy-4-vinylphenol (MVP) along in situ extraction with n-heptane is shown. Here, the use and optimization of periodic open-cell structures (POCS) as a carrier for the enzyme phenolic acid decarboxylase and a distributor for the extraction phase is targeted. By rapid prototyping of transparent structures and their examination with respect to the induced flow characteristics of colored heptane, a structure could be optimized for the specific reaction system. The additive manufacturing of the POCS and its application in a CC AMR enabled 95% conversion of 5 mM FA in two hours and a MVP concentration in reaction phase below 0.5 mM.
Functionalization of Bis-Diazaphospholene P-P Bonds with Diverse Electrophiles
Authors: Huchenski Blake S. N. , Robertson Katherine N. , Speed Alex
Published: April 2020

Readily prepared bis-diazaphospholenes are shown to react with several classes of electrophiles, resulting in cleavage of the phosphorus-phosphorus bond and formation of functionalized diazaphospholenes. Phosphorus – sp3 or sp2 carbon and phosphorus – sulfur bonds were formed using this protocol. Experimental evidence with aryl and alkyl halides suggests the intermediacy of radicals in some cases, however other evidence suggests either radical or polar mechanisms may be operative for certain substrates, with a dependence on reaction conditions. In some cases, the substituted diazaphospholenes can transfer the substituent to electrophiles via previously unknown reactions. These results show diazaphospholene dimers are potent participants in radical chemistry at room temperature without requiring chemical initiators.
A Deep-Learning Approach Toward Rational Molecular Docking Protocol Selection
Authors: Jimenez-Luna Jose , Cuzzolin Alberto , Bolcato Giovanni , Sturlese Mattia , Moro Stefano
Published: April 2020

While a plethora of different protein-ligand docking protocols have been developed over the past twenty years, their performances greatly depend on the provided input protein-ligand pair. In this work we have developed a machine-learning model that uses a combination of convolutional and fully-connected neural networks for the task of predicting the performance of several popular docking protocols given a protein structure and a small compound. We also rigorously evaluate the performance of our model using a widely available database of protein-ligand complexes and different types of data splits. We further open-source all code related to this study so that potential users can make informed guesses on which protocol is best suited for their particular protein-ligand pair.
Cytotoxic and Genotoxic Activity of Turkish Pale Liverwort (Chiloscyphus polyanthos (L.) Corda) Against Human Periferal Blood Lymphocytes
Authors: KARA Recep , AYDIN Cansu , BUDAK DİLER Songül
Published: April 2020

Pale Liverwort-Chiloscyphus polyanthos is one of the most common aquatic liverworts that growing in or near the watering streams and lakes. It typically formed extensive matting appearance in the water or on the boulders in the water. In this study, Chiloscyphus polyanthos collected from the Erciyes Mountain were extracted using ethyl acetate, methanol, and water-methanol solvents. Cytotoxic and genotoxic effects of extracts against human peripheral blood lymphocytes were investigated. The genotoxic activity was determined by using the Chromosome Aberration Test. The cytotoxic activities of the extracts were determined by the Mitotic index (MI). The results showed that the extracts had cytotoxic effect and not genotoxic effect. According to this result, we estimate that Chiloscyphus polyanthos can be used as medicinal plant.
Penggunaan Model Pengajaran Terarah Dalam Meningkatkan Prestasi Dan Pemahaman Pelajaran IPS Pada Siswa Kelas VIII J SMP Negeri 1 Watampone Kabupaten Bone
Authors: Kasma Kasma
Published: April 2020

The problems that need to be studied in this study are: (a) How is the improvement of social studies learning achievement by the application of directed teaching models (b) How the influence of the instructional model directed towards motivation to learn. The objectives of this study were: (a) to know the improvement in social studies learning achievements after the active learning method was applied to the directed learning model. (b) want to know the effect of social studies learning motivation after the active learning model directed learning model has been applied. This study uses action research as many as three cycles. Each cycle consists of four stages, namely: planning, implementing, observing, and reflecting. The subjects of this study were students of Class VIII J SMP Negeri 1 Watampone Kab. Bone. Data obtained in the form of formative test results, observation sheets of teaching and learning activities. Learning with active learning methods directed learning model has a positive impact in improving students' learning achievement which is characterized by increasing student mastery learning in each cycle, namely cycle I (20.00%), cycle II (95.00%). The application of the active learning model of the directed teaching model has a positive influence, which can increase the motivation of student learning as indicated by the average student response stating that students are interested and interested in being motivated to learn.
KEMAMPUAN CRITICAL THINKING DAN HASIL BELAJAR KELAS IV SD TINGKIR TENGAH 02
Authors: Rudi Susilo , Koeswanti Henny Dewi , Giarti Sri
Published: April 2020

This study aims to improve critical thinking skills and mathematics learning outcomes of fourth-grade students of SD Tingkir Tengah 02 Salatiga in the second semester of the 2018/2019 academic year. Critical thinking and learning outcomes are low because the teacher uses the lecture method. The author chooses the Open-Ended model assisted by powerpoint media as a solution. Research procedures include planning, action, observation, and reflection. The results showed an increase from the initial condition with 9 students or 25.71% completed and 29 students or 74.29% not complete. The implementation of the first cycle results obtained 29 students or 82.86% completed and 6 students or 17.14% did not complete. Cycle II as a follow-up and improvement of the first cycle with the acquisition of achieving attainment of 35 students or 100%. The results obtained by the conclusion of the application of Open-Ended learning assisted by powerpoint media can improve critical thinking skills and mathematics learning outcomes of fourth-grade students of SD Tingkir Tengah 02 Salatiga second semester of the 2018/2019 academic year.
Pengaruh Ice breaking terhadap Minat Belajar Siswa Kelas V SD Negeri 10 Manurunge Kecamatan Tanete Riattang Kabupaten Bone
Authors: Rosmalah Rosmalah , Hasdiana Hasdiana , Satriani Satriani
Published: April 2020

The problem in this study is the low interest in learning of fifth grade students at SDN 10 Manurunge, Tanete Riattang, Bone District. The formulation of the problem in this study is how the description of Student Interest in Class V of the 10th Elementary School Manurunge Tanete Riattang, Bone District and whether there is a significant influence on the application of Ice breaking on student learning interest. The purpose of this study was to describe the interest in learning for fifth grade students at SDN 10 Manurunge Tanete Riattang sub-district, Bone Regency, then to find out the picture of students' learning interest after applying ice breaking to fifth grade students at Manurunge 10 Public Elementary School, and to determine the effect of ice breaking towards student learning interest. The research approach is a quantitative approach. This type of research is quasi-experimental research in the form of a non-equivalent control group design. There are two research variables namely the independent variable (ice breaking) and the dependent variable (learning interest). The total population is 96 students. The research sample was selected using a purposive sampling technique. Data collection techniques in this study used a questionnaire and documentation. Data was collected by giving Pre-test and Post-test and analyzed using descriptive statistics and inferential statistics. Based on the analysis results obtained sig. (2 tailed) 0,000 <0.05 which means that there are significant differences in the average student interest in learning, so it can be concluded that ice breaking has a significant effect on student interest in learning.
STUDI EKSPLORATIF DINAMIKA KELOMPOK KARATE
Authors: Firdaus Faradillah , Asri Asmulyani
Published: April 2020

Masalah kelompok saat ini tampaknya cukup menarik perhatian. Banyak pelajar belajar secara berkelompok. Hal demikian menggembirakan karena belajar secara berkelompok akan banyak manfaatnya. Masing-masing pelajar dapat menerima dan memberi pengetahuan yang dimilikinya, sehingga pengetahuan mereka akan bertambah. Pada saat ini ada pula kejadian-kejadian yang dilakukan secara berkelompok dan mengakibatkan hal-hal yang tidak menguntungkan. Kelompok A bentrok dengan kelompok B dan mengakibatkan kerugian, baik nyawa maupun materi. Penelitian ini bertujuan untuk  mengetahui dinamika kelompok, kelompok karate yang ada dimakassar. kelompok adalah dua orang atau lebih yang saling berinteraksi dan saling memengaruhi satu dengan yang lainnya, serta memiliki ketertarikan atau tujuan yang sama. Mills (Walgito, 2010) menitikberatkan penjelasannya tentang kelompok pada tujuan (purpose), dan menganggap bahwa kontak dalam kelompok sebagai sesuatu yang meaningful. Metode dalam penelitian ini adalah memakai metode kualitatif dengan menggunakan metode wawancara dan metode kuantitatif dengan menggunakan angket dan skala. Hasil dalam penelitian ini bahwa dalam organisasi itu, terdapat salah satu ciri penting dari kelompok, yaitu interdependensi. interdependensi secara garis besar berarti setiap anggota kelompok bergantung (depend on) pada anggota kelompok lainnya. kelompok memiliki kohesivitas yang tinggi, maka keanggotaan/kebersamaan lebih bernilai dan menjadi lebih penting dibanding individual, hal ini juga menjadikan timbulnya sikap subjektifitas pada anggota kelompok tersebut yang cenderung menganggap bahwa anggota kelompoknya selalu benar sehingga diantara anggota kelompok tersebut akan mampu memaklumi kesalahan anggota kelompoknya.Kata Kunci : kelompok, dinamika kelompok.
Pelatihan Empowering Saudara Kandung dari Anak Berkebutuhan Khusus Empowering Training for Sibling of Special Needs Children
Authors: Lunanta Lita Patricia , Duriana Yeny
Published: April 2020

Abstrak. Hubungan antara saudara kandung adalah salah satu hubungan yang paling ambivalen. Dalam keluarga yang memiliki beberapa anak, saudara kandung dapat berselisih pandang, tertawa, berpelukan dalam waktu yang berdekatan. Demikian juga yang terjadi pada saudara kandung anak berkebutuhan khusus. Saudara kandung anak yang berkebutuhan khusus seringkali muncul perasaan yang sangat bervariasi, beberapa mengungkapkan rasa malu, rasa bersalah, rasa bertanggung jawab, rasa terisolasi. Namun di sisi lain keberadaan saudara kandung sangat dibutuhkan bagi anak berkebutuhan khusus sebagai  social support. Penelitian ini bertujuan untuk meningkatkan kualitas hubungan interpersonal antara anak berkebutuhan khusus dengan saudara kandungnya. Kerangka teori yang digunakan antara lain mengenai hubungan interpersonal, mengenai saudara kandung dari anak berkebutuhan khusus, serta modul pelatihan untuk mendukung saudara kandung dari anak berkebutuhan khusus. Penelitian ini menggunakan metode  Quasi-experimental dengan desain “The   Dependent Pretest and Postest Samples”.  Hasil penelitian menunjukkan bahwa tidak ada perbedaan yang siginifikan hubungan interpersonal pada saudara kandung anak autis sebelum dan sesudah penelitian.  Peserta mengikuti kegiatan dengan baik dan memberikan penilaian yang positif terhadap kegiatan yang dilakukan. Namun nampaknya pelatihan setengah hari yang diterima tidak cukup signifikan untuk mengubah kualitas hubungan interpersonal antara saudara kandung. Kata kunci: pemberdayaan, hubungan interpersonal, saudara, kebutuhan khusus.
Tantangan Pendidikan di Era Disruptif: Ujian Online Berbasis Smartphone dengan Pengembangan Aplikasi xSIA
Authors: Bakar Resekiani Mas , Panggabean Benny Enrico Leonard , Dewi Eva Meizarra Puspita
Published: April 2020

Xsia21.xSIA.app was a digital archive system that simplified the lecturer in conducting, verifying and analysing the test result. The paperless method aimed to facilitate the participants to perform an examination without paper and pencil and for the lecturer to check the result as well. The participants in this study were 35 students. Participants filled four kinds of online assessment are questionare of paperless method, questionare of interview subject scale, true false test and multiple choice test. Test analysis used descriptive technique in xSIA web. The result of this study showed that positive responses enabled the participants show their positive emotion, share their opinion each other, receive the new experiences and represent their high interest. In addition, online test provided time efficiency and attractive design. The result of online test illustrated high score for most participants and proved that online test in Interview Subject offer a lot of advantages, either for students or lecturer.
PERAN KEGIGIHAN DALAM HUBUNGAN GROWTH MINDSET DAN SCHOOL WELL-BEING SISWA SEKOLAH MENENGAH
Authors: Wahidah Fatin Rohmah , Royanto Lucia R M
Published: April 2020

This study investigates the relationship between school well-being, growth mindset, and grit. The subjects involved in this study are students from grade 12 in high public and private schools in Purbalingga, Central Java (n=418). The research method used is quantitative method with data collection through three questionnaires, i.e., School Well-Being Scale (32 items, α=0.853); Mindset Scale (20 items, α=0.804); and Grit Scale for Children and Adult (12 items, α=0.774). Results indicated a positive affact growth mindset on school well-being, a positive affact growth mindset on grit, and confirmed the mediating role of grit. It was concluded that the effect of growth mindset on school well-being of senior high school students in Purbalingga was mediated by grit. Growth mindset in students predicts higher school well-being through the enhancement of grit. Thus, giving intervention of growth mindset and grit can be carried out by school to improve students’s school well-being.Keywords: grit, growth mindset, high schools, school well-being Tujuan dari penelitian ini adalah untuk mengetahui hubungan school well-being, growth mindset, dan kegigihan. Partisipan yang terlibat adalah siswa kelas 12 sekolah menangah atas dari sekolah negeri dan sekolah swasta di daerah Purbalingga, Jawa Tengah (n=418). Metode penelitian yang digunakan adalah metode kuantitatif dengan pengumpulan data melalui tiga kuesioner, yaitu skala School Well-Being (32 aitem, α=0.853); skala Mindset (20 aitem, α=0.804); and Grit Scale for Children and Adult (12 aitem, α=0.774). Hasil penelitian menunjukkan adanya pengaruh positif growth mindset terhadap school well-being, pengaruh positif growth mindset terhadap kegigihan, dan kegigihan terkonfirmasi sebagai mediator. Dapat disimpulkan, pengaruh growth mindset terhadap school well-being pada siswa sekolah menengah di Purbalingga dimediasi oleh kegigihan. Growth mindset pada siswa memprediksi school well-being, melalui pengembangan kegigihan. Oleh karena itu, pemberian intervensi dengan menyasar growth mindset dan kegigihan disarankan dapat dilakukan sekolah untuk meningkatkan school well-being siswa.Kata kunci: growth mindset, kegigihan, school well-being, sekolah menengah atas
Hubungan Harga Diri dan Prasangka Gender Dengan Kecenderungan Perilaku Cyberbullying Pelajar Jakarta
Authors: Lesmana Teguh
Published: April 2020

The phenomenon of cyberbullying often occurs in Indonesia, especially in adolescents. The case of cyberbullying tends to occur because of the problem of self-esteem in the perpetrators of cyberbullying. Apart from self-esteem issues, it was also found that men tend to do cyberbullying more often than women. The purpose of this study was to determine the relationship of self-esteem and gender prejudice to cyberbullying behavior on students in Jakarta. The research method used is the stratified random sampling technique. This research was conducted to high school and vocational high school students on an equal level in DKI Jakarta with a sample of 435 people. The results of this study indicate that there is a significant relationship between self-esteem and the tendency of cyberbullying behavior. In addition, gender prejudice was also found to have a significant relationship with the tendency of cyberbullying behavior. These results are expected to be the basis for educators and parents and the government to provide early education to adolescents about the importance of developing tolerance and respect for the opposite sex and providing education on how to use social media wisely.
Parenting in Digital Era: Issues and Challenges in Educating Digital Natives
Authors: Supartiwi Mahardika , Agustina Laelatus Syifa Sari , Fitriani Afia
Published: April 2020

Perkembangan teknologi dan informasi saat ini membawa perubahan yang besar bagi kehidupan manusia. Apalagi dengan munculnya internet dan media digital (smartphone, tablet, laptop, televisi), individu menjadi sangat mudah dalam mengakses berbagai macam informasi. Tidak hanya orang dewasa, anak-anak, bahkan balita saat ini sudah terpapar media digital. Anak-anak dan remaja yang sejak lahir sudah mengenal media digital ini sering diistilahkan sebagai generasi digital natives (DNs). Generasi DNs ini mendapatkan kemudahan yang ditawarkan oleh perkembangan teknologi tersebut, tetapi ternyata tidak luput dari dampak negatif yang menyertai. Penggunaan gadget yang berlebihan pada anak dapat menjadi pemicu munculnya kecanduan terhadap gadget, kerusakan mata, timbulnya stres, bahkan mengarah pada depresi. Melihat fenomena tersebut, maka diperlukan adanya pendampingan oleh orangtua pada saat anak mengakses media digital. Pengasuhan yang tepat dari orangtua dapat membentengi diri anak ketika mengakses media digital dan internet. Tujuan penulisan artikel ini adalah untuk memaparkan pengasuhan orangtua pada era digital. Berdasarkan studi literatur, didapatkan kajian mengenai tahapan pengasuhan orangtua dalam penggunaan media digital berdasarkan model teori perkembangan dan beberapa strategi yang dapat digunakan orangtua untuk mendampingi anaknya dalam berselancar di dunia maya. Kata kunci: digital natives; pengasuhan; media digital; strategi
EXERGY ANALYSIS OF SOLAR DRYER WITH A BACKUP INCINERATOR
Authors: Barki. E  , Ukwenya J  , Idoko F
Published: April 2020

Solar dryer with backup incinerator was fabricated with the aim of improving the efficiency of the drying rate of selected agricultural products. The dryer consist of three main parts, the collector, the drying chamber and the incinerator. 1000g of chill pepper was sun dried and 1000g was charged into the dryer for the experiment. Drying using solar drying process was carried out during clear weather while incinerator drying process was carried out during cloudy weather and at nights The collector, dryer and incinerator energy efficiencies were determined and reported elsewhere. Exergy analysis of the dryer was carried out for both solar drying and incinerator drying using the experimental values. The average exergy inflow and outflow during solar drying was found to be 266.97 KJ/Kg and 20.85 KJ/Kg respectively. The average exergy loss at airflow velocity of 2.7 m/s was found to be 269.3 KJ/Kg for incinerator drying. The exergy efficiency of the incinerator fluctuates as it starts from 7.9, 11.1, 5.2, 13.5, 8.0 and 3.6 % for 8.00, 10.00, 12.00, 14.00, 16.00, 18.00 hrs respectively. The result also shows exergy efficiency of 83.1, 85.9, 91.7, 92.4, 89.0 and 73.4 % for 8.00, 10.00, 12.00, 14.00, 16.00, 18.00 hrs respectively during solar drying. The experimental and analytical temperatures values were observed to be solar radiation intensity dependants and are directly proportional with it. Although the heat losses are high for both drying processes, the dryer is suitable for drying agricultural produce during clear, cloudy weather and at nights.
IDENTIFYING AND ANALYZING FACTORS THAT AFFECT THE WILLINGNESS-TO-PAY OF TUITION OF A BOARDING HIGH SCHOOL IN A REMOTE AREA IN INDONESIA
Authors: Jesse Lumbantobing  , Manik Yosef
Published: April 2020

Tuition is a critical consideration for families who plan to send their children for superior high school. In any purchase strategy, ability to pay (ATP) and willingness to pay (WTP) have a different understanding. ATP depends on any information related to families’ wealth while WTP is determined by how families’ perceived the value proposition provided. This study aims to measure WTP and identify the factors that influence the tuition of superior high school, so it can be use in determining marketing strategies and pricing strategies. This data was collected by questionnaire to 360 respondents obtained during student admission of SMA Unggul Del. The relationship of factors that influence the WTP is determined by multiple linear regression methods. Based on the analysis, the average WTP is Rp1.135.322,22, while the mode value is Rp1.000.000,00 per month. Factors influencing WTP are the age of parents, income level, and parent’s WTP ratio of the tuition of SMA Unggul Del with that of other favorite school. Based on these factors, to be able to target parents of students with higher WTP, an effective marketing strategy is targeting parents with higher income levels, younger, and perceive SMA Unggul Del more than other schools.
Estimation of NDVI with visible images (RGB) obtained with drones
Authors: Galvíncio Josiclêda Domiciano , Naue Carine Rosa
Published: April 2020

The NDVI (Normalized Difference Vegetation Index) is a vegetation index widely used to evaluate the health conditions of vegetation, whether preserved or derived from anthropic actions, such as agriculture. NDVI's estimation with drones is still quite precarious as it requires different studies to assess their accuracy. The aim of this study is to evaluate the NDVI estimate obtained with images of the visible attention to radiometric calibrations. Radiometric calibration equations that were widely disseminated for the use of Landsat 5 satellite were used. These equations were used to calibrate drone images. The results showed that the calibrations raised the level of accuracy of NDVI estimates with drone images. It is concluded that it is of paramount importance the radiometric calibration of the images obtained with drones so that they allow more accurate estimates, such as NDVI. The use of drone products to estimate NDVI is quite promising. But it is necessary to study more robust radiometric calibration procedures, increasing the quality of data products from drones and making it more comparable between sites, sensors, and schedules.Estimativa do NDVI com imagens do visível (RGB) obtidas com drones R E S U M OO NDVI (Normalized Difference Vegetation Index) é um índice de vegetação muito utilizado para avaliação das condições de saúde da vegetação, seja ela preservada ou advinda das ações antrópicas, como por exemplo, agricultura. A estimativa do NDVI com drones ainda é bastante precária uma vez que necessita de diferentes estudos para avaliar a precisão deles. O objetivo deste estudo é avaliar a estimativa do NDVI obtidas com imagens do visível atentando para as calibrações radiométricas. Foram utilizadas equações de calibração radiométricas bastantes difundidas para uso do satélite Landsat 5. Essas equações foram utilizadas para calibração de imagens de drones. Os resultados mostraram que as calibrações elevaram o nível de acurácia das estimativas do NDVI com imagens de drones. Conclui-se que é de suma importância a calibração radiométrica das imagens obtidas com drones para que elas possibilitem estimativas mais precisas, como por exemplo o NDVI. O uso de produtos de drones para estimativa de NDVI é bastante promissor. Mas, se faz necessário o estudo de mais procedimentos robustos de calibração radiométrica, aumentando a qualidade dos produtos de dados advindos de drones e tornando mais comparáveis entre sites, sensores e horários.Palavras-chave: Calibração radiométrica, condições ambientais, monitoramento.
Manajemen Pemangkasan Tanaman Teh (Camellia sinensis (L.) O. Kuntze) di Unit Perkebunan Tambi, Jawa Tengah
Authors: Safitri Ika Ari , Junaedi Ahmad
Published: April 2020

Penelitian dilaksanakan di Unit Perkebunan Tambi, PT Tambi, Wonosobo, Jawa Tengah pada bulan Februari hingga Juni 2017. Penelitian bertujuan untuk mendeskripsikan kondisi tanaman teh pada waktu menjelang dan setelah pemangkasan, serta aspek teknis pelaksanaan dan pengelolaan pemangkasan. Kriteria-kriteria sebelum dilaksanakan pemangkasan yaitu tinggi tanaman > 110 cm, diameter bidang petik ± 120 cm, dan persentase pucuk burung > 70%. Pengamatan saat pemangkasan yaitu tinggi pangkasan, alat pangkas, tipe/jenis pangkasan, persentase kerusakan cabang, waktu pemangkasan, luas areal pangkasan, jumlah tenaga kerja dan kapasitas pemangkas, serta daur/gilir pangkasan. Pengamatan setelah pemangkasan yaitu pertumbuhan tunas baru. Hasil pengamatan tinggi tanaman sebelum pemangkasan adalah < 110 cm dengan diameter bidang petik < 120 cm, dan persentase pucuk burung > 70%. Produktivitas tertinggi dicapai pada tahun pangkas III dan menurun pada tahun pangkas IV. Tipe atau jenis pangkasan yang dilakukan di UP Tambi adalah pemangkasan bersih menggunakan sabit pangkas. Gilir pangkas di UP Tambi adalah 4-5 tahun. Kerusakan cabang akibat pemangkasan tidak dipengaruhi oleh lama bekerja dan usia tenaga kerja.
Induksi Akar dan Tunas Setek Batang Tanaman Pohpohan (Pilea trinervia Wight) dalam Media Air dengan Perlakuan IBA dan Aerasi
Authors: Ninariyani Katerin , Efendi Darda , Gunawan E.
Published: April 2020

Penelitian ini bertujuan untuk mempelajari pengaruh penggunaan aerasi dan hormon pertumbuhan tanaman Indol -3-butiryc acid (IBA) pada induksi tunas dan akar setek Pohpohan (Pilea trinervia Wight.) dalam media air. Penelitian dilaksanakan di Rumah Kaca Kebun Percobaan Pasir Kuda, Pusat Kajian Holtikultura Tropika (PKHT) IPB pada bulan Juni-Oktober 2016. Penelitian menggunakan rancangan split-plot dua faktor dengan empat ulangan. Faktor pertama sebagai petak utama adalah aerasi terdiri dari dua taraf yaitu aerasi dan tanpa aerasi. Faktor kedua sebagai anak petak adalah IBA dengan empat taraf konsentrasi yaitu 0.0, 0.5, 1.0, dan 2.0 mg L-1. Hasil penelitian menunjukan bahwa perlakuan aerasi dan IBA berpengaruh terhadap persentase setek bertunas, jumlah akar, panjang akar, jumlah tunas, dan panjang tunas, namun tidak berpengaruh pada persentase setek hidup dan setek berakar. Kombinasi perlakuan tanpa aerasi dan IBA 0.5, 1.0, dan 2.0 mgL-1 menghasilkan jumlah akar paling banyak.
Peningkatan Produksi dan Mutu Benih Jagung Hibrida melalui Aplikasi Pupuk N, P, K dan Bakteri Probiotik
Authors: Sari Putri Melia , Surahman Memen , Budiman Chandra
Published: April 2020

Penelitian dilaksanakan Kebun Balai Besar Penelitian Tanaman Padi, Muara, Bogor dan Laboratorium Ilmu  dan Teknologi  Benih,  Departemen  Agronomi  dan  Hortikultura,  Fakultas Pertanian,  Institut  Pertanian Bogor dari bulan November 2016 hingga Mei 2017 dengan rancangan RKLT satu faktor dan tiga ulangan. Faktor  yang  digunakan  adalah  kombinasi  pupuk  N,  P,  K  dan  bakteri  probiotik  yang  terdiri  dari  15  taraf perlakuan yaitu P1N1, P2N1, P3N1, P4N1, P5N1, P1N2, P2N2, P3N2, P4N2, P5N2, P1N4, P2N4, P3N4, P4N4 dan P5N4 dengan keterangan bahwa N1 = kontrol, N2= 75 kg ha-1  Urea, 50 kg ha-1  Sp-36, 25 kg ha-1 Kcl dan N4= 225 kg ha-1, 150 kg ha-1  Sp-36, 75 kg ha-1  Kcl serta P1= kontrol, P2= P24 + AzL7, P3= P24 + AcCKW5, P4= P24 + AzL7 dan P5= P24 + AcCKB20. Bakteri P24 merupakan bakteri golongan Pseudomonas sp. sebagai pelarut fosfat, AzL7 adalah bakteri dari kelas Azotobacter, AcCKB20 dan AcCKW5 bakteri kelas Actinomycetes sp. sebagai penambat nitrogen. Hasil penelitian menunjukkan kombinasi pupuk N, P, K dan bakteri probiotik mempengaruhi tinggi tanaman dan jumlah daun 2, 4, 6 dan 8 MST serta mempengaruhi diameter batang 4, 6 dan 8 MST. Kombinasi pupuk N, P, K dan bakteri probiotik juga mempengaruhi jumlah tongkol panen, bobot tongkol kupasan, bobot pipilan kering, panjang tongkol, diameter tongkol, bobot tongkol, jumlah baris biji, bobot benih per tongkol, rendemen benih, produktivitas benih serta mempengaruhi indeks vigor, kecepatan tumbuh, bobot kering kecambah normal dan bobot 1000 butir benih. Perlakuan kombinasi terbaik untuk produksi dan mutu benih jagung hibrida adalah ((bakteri probiotik P24 + AcCKW5(cair 2) dengan dosis Urea 225 kg ha-1, SP-36 150 kg ha-1, KCl 75 kg ha-1.
Induksi Mutasi Fisik pada Paku Bintik (Microsorum punctatum) melalui Iradiasi Sinar Gamma
Authors: Rahman Qisthi Kustia , Aisyah Syarifah Iis
Published: April 2020

Pemuliaan mutasi dengan iradiasi sinar gamma merupakan salah satu cara dalam meningkatkan keragaman genetik tanaman. Tujuan penelitian ini adalah mengetahui radiosensitivitas dan nilai LD50 (Lethal dose 50) sinar gamma pada M. punctatum serta mengamati keragaan tanaman M. punctatum hasil iradiasi sinar gamma pada MV1. Nilai LD50 merupakan salah satu parameter untuk mengukur tingkat sensitivitas suatu jaringan terhadap iradiasi. Semakin rendah nilai LD50 suatu jaringan tanaman, semakin tinggi tingkat radiosensitivitasnya, sehingga semakin besar peluang terjadinya mutasi. Penelitian ini menggunakan rancangan acak lengkap (RAL) faktor tunggal (dosis iradiasi sinar gamma) dengan 3 ulangan. Iradiasi sinar gamma diberikan terhadap stek rimpang dengan satu daun dari tanaman M. punctatum secara tunggal (acute irradiation) menggunakan Gamma Cell 220 dengan dosis 0, 10, 20, 30, 40, dan 50 gray. Semua rimpang dengan satu daun hasil iradiasi ditanam di lapangan hingga 16 minggu setelah iradiasi (MSI). Hasil penelitian menunjukkan bahwa pemberian iradiasi sinar gamma pada M. punctatum menghasilkan LD50 sebesar 86,25 gray dan perlakuan iradiasi sinar gamma antar perlakuan berbeda nyata terhadap tinggi dan lebar daun, sedangkan karakter jumlah daun tidak berbeda nyata. Perlakuan iradiasi juga menyebabkan defisiensi warna hijau pada daun M. punctatum. Secara morfologi, perlakuan iradiasi sinar gamma terhadap M. punctatum belum menghasilkan mutan-mutan yang diinginkan, namun secara genetik, terdapat penggandaan jumlah kromosom dan aberasi kromosom pada perlakuan dosis iradiasi tertinggi (50 gray).
PENGARUH PERKUATAN GEOTEKSTIL TIPE WOVEN GX-50 TERHADAP KERUNTUHAN PONDASI PADA PASIR PANTAI DENGAN VARIASI KEDALAMAN MUKA AIR
Authors: Adinda Baiq Tami Dwi , Prabowo Agung , Muchtaranda Ismail Hoesain
Published: April 2020

Perkembangan pembangunan kota tidak saja mengarah ke daerah perbukitan dengan harapan terbebas dari masalah banjir, namun daerah dataran rendah, tergenang air,rawa-rawa dan pinggir pantai mulai dikembangkan menjadi daerah pemukiman. Salah satu jenis tanah yang memiliki beberapa sifat yang kurang menguntungkan bagi suatu konstruksi adalah jenis tanah pasir. Kekurangan dari tanah pasir adalah pasir tidak memiliki daya ikat antar partikel satu sama lain terutama pada tanah pasir yang memiliki nilai kerapatan relatif yang rendah (pasir lepas). Selain itu kondisi tanah pasir pantai memungkinkan adanya pengaruh pasang surut air laut yang dapat mempengaruhi kapasitas dukung tanah tersebut. Oleh karena hal itulah sehingga tanah pasir pantai perlu diberikan perkuatan. Pengujian yang dilakukan dalam penelitian ini adalah pengujian sifat fisik dan mekanik tanah pasir pantai. Pengujian ini merupakan penelitian eksperimental di laboratorium yang menggunakan box acrylic dengan ukuran 50 x 50 x 50 cm dengan tinggi sampel tanah yang digunakan adalah 25 cm yang diberi perkuatan geotekstil GX-50 dengan pemberian beban dan variasi kedalaman muka air B cm, 2B cm, dan sejajar permukaan pasir dengan arah aliran tegak lurus. Hasil pengujian keruntuhan pada pondasi pasir pantai dengan variasi kedalaman muka air yang diberi perkuatan geotekstil menunjukkan penurunan pondasi menjadi lebih kecil dibandingkan dengan tanpa perkuatan geotekstil. Pada kondisi 2B dengan Dr 25% penurunan berkurang yaitu sebesar 27%, untuk B cm sebesar 31%, dan untuk variasi sejajar permukaan pasir sebesar 26%. Sedangkan untuk Dr 100% kondisi 2B cm penurunan berkurang sebesar 21%, untuk B cm sebesar 23%, dan sejajar permukaan pasir sebesar 20%. Dapat disimpulkan dengan penambahan geotekstil daya dukung pasir pantai meningkat. Tipe keruntuhan yang terjadi pada kondisi 25% yaitu tipe keruntuhan penetrasi, sedangkan pada Dr 100% terjadi keruntuhan geser umum.
Control central de la temperatura corporal y sus alteraciones: fiebre, hipertermia e hipotermia
Authors: Picón-Jaimes Yelson Alejandro , Orozco-Chinome Javier Esteban , Molina-Franky Jessica , Franky-Rojas Mabel Patricia
Published: April 2020

Introducción. En mamíferos, el control de la temperatura corporal es vital. El estado de consciencia y control motor en humanos, ocurren a una temperatura de 37°C y las desviaciones pueden alterar las propiedades celulares, generando disfunciones fisiológicas. En especies como los roedores (su relación área de superficie/volumen facilita la pérdida de calor) mantienen temperaturas basales cercanas a los 30°C. Distinto es con animales como los paquidermos, cuya temperatura es menor comparada con los humanos. El objetivo es identificar los aspectos fisiológicos de la termorregulación. Descripción de temas tratados. Revisión descriptiva de la literatura de artículos publicados en diferentes bases de datos. La termorregulación es la capacidad del cuerpo para establecer y mantener su temperatura, regulando producción y pérdida de calor para optimizar la eficiencia de procesos metabólicos. El protagonismo lo tiene el sistema nervioso central y su control neuro-hormonal en múltiples niveles. El centro regulador térmico está en el hipotálamo anterior. Este recibe información de los receptores de grandes vasos, vísceras abdominales, médula espinal y de la sangre que perfunde el hipotálamo. Cuando aumenta la temperatura central, el termorregulador activa fibras eferentes del sistema nervioso autónomo, provocando pérdida de calor por convección y evaporación. Ante el descenso de temperatura, la respuesta es disminuir la pérdida de calor (vasoconstricción y menor sudoración); además, incrementar la producción de calor, intensificando la actividad muscular. Conclusión. La termorregulación es liderada por el hipotálamo, quien regula aumento y disminución de la temperatura respondiendo a las necesidades del organismo para llegar a la homeostasis y compensación, enfrentando las alteraciones de la temperatura ambiental
Estrés en estudiantes de enfermería que realizan prácticas clínicas en una institución universitaria de Cartagena-Colombia, 2019
Authors: Ruidiaz Domez Keidis Sulay , Peinado Valencia Lindsay Paola , Osorio Contreras Laura Vanessa
Published: April 2020

Objetivo: determinar los niveles de estrés que experimentan los estudiantes de enfermería que realizan sus prácticas clínicas en una institución universitaria de la ciudad de Cartagena (Colombia). Materiales y métodos: se realizó un estudio descriptivo, transversal, con una muestra de 98 estudiantes de enfermería matriculados en semestres de IV a IX. Se aplicó cuestionario KEZKAK sobre percepción de estrés en estudiantes de enfermería en prácticas clínicas. Los análisis emplearon estadística descriptiva. Resultados: los estudiantes tuvieron edades comprendidas entre 20 – 24 años (61,2%), fueron mujeres (93,9%). Presentaron nivel alto de estrés (51%), durante las prácticas clínicas por considerar falta de competencias (68,4%), impotencia e incertidumbre, y el enfermo busca una relación íntima y/o amorosa con 48% respectivamente. Conclusiones: los estudiantes evidencian que la falta de competencias al brindar cuidado a los pacientes en situaciones críticas, se convierte en un determinante generador de estrés.
Psicología social y Neurociencia: Un llamado al trabajo transdiciplinar
Authors: Landinez Martinez Daniel
Published: April 2020

El objetivo de esta reflexión temática es presentar el enfoque de trabajo transdisciplinar como mecanismo de interacción entre la psicología social y la neurociencia. Con este propósito, se aborda  la cognición social y se presentan tres líneas de estudio que permiten una discusión entre diversos profesionales: Teoría de la Mente, empatía y reconocimiento de rostros. En este sentido, se concluye que el proceso de trabajo en conjunto entre la psicología social y la neurociencia permite acceso a un conocimiento más claro y ecológico, es decir, llevado a la comunidad para ser aplicado de acuerdo a sus verdaderas necesidades. Esta integración es un aporte que demuestra la necesidad de abordar el objeto de estudio desde múltiples perspectivas con el propósito, no de anularse entre posturas, sino más bien de trascender lo disciplinar.
Psychological adjustment in children and teenagers living with HIV
Authors: Sánchez-Villegas Milgen , Reyes-Ruiz Lizeth , Trejos-Herrera Ana Maria
Published: April 2020

Abstract

The main objective of this study was to describe the psychological adjustment in children and teenagers (n=14) between 6 and 15 years living with HIV. Quantitative study with descriptive design. Child Symptom Checklist CBCL/6-18 adapted to Latinos was used to assess psychological adjustment. Social competencies and school activities scale showed that 79% of the participants were in clinical range and 21% in the normal range. Syndrome scale showed that 43% of evaluated are in clinical range, 36% in normal range and 21% in borderline. The psychological adjustment perception referred by participant’s caregivers evidences a low level in the social capacities due to the low participation and skills in diverse activities; without links with social character organizations, minimum social red and school performance out of the expected. Also, the majority of the sample reflects psychosomatic behavior problems, aggressiveness and anxiety, indicating a psychological maladjustment of internalized and externalized type.

Keywords: HIV; AIDS, Psychological adjustment; Mental health.
Diversidad funcional, emergente de un enfoque de derechos y autodeterminación
Authors: Mejía Zapata Sandra Isabel
Published: April 2020

Objetivo: Reconocer las condiciones en materia de derechos para las personas con diversidad funcional (discapacidad), asimismo su incidencia para el logro de la autodeterminación. Materiales y métodos: la investigación de tipo cualitativo se realizó en Medellín, Antioquia; con personas en esta condición, para el trabajo de campo se implementó una entrevista semiestructurada a profundidad que contó con doce preguntas. La información compuesta por antecedentes teóricos, de punta y narrativas de los participantes, es sistematizada para su triangulación en el programa Atlas.Ti, dando lugar a las categorías de análisis.  Resultados: En Colombia se evidencia desactualización y por ende desinformación sobre la población existente con diversidad funcional. Falta reconocimiento en materia de derechos incluso por parte de la misma población con diversidad funcional. Conclusiones: Urge un trabajo interdisciplinar para el alcance pleno de los derechos de esta población, en tanto un enfoque digno requiere una mirada multifactorial que propenda por el acompañamiento, el desarrollo y la promoción de las capacidades para la participación.