bluuebunny/crossref_metadata_2025 huggingface dataset:
Pengemasan Talk Show Dalam Perspektif Manajemen Penyiaran Televisi (Studi Kasus pada Program “Polemik On TV” di iNews TV, Jakarta Untuk Meningkatkan Rating dan Share)
Authors: Kristanty Shinta
Published: January 2019

Packaging “Polemik On TV” program certainly involves organized and systematic broadcasting management, this is related to rating and share which is the main goal of made a television program. Likewise on the talk show program “Polemik On Tv” that aired iNews TV, to improve the share of broadcasting management is required that also rests on organizational control, so that the planning stage until the evaluation phase is organized and directed. The theory used in this research is the theory of organizational control. This research method is case study, with data collecting technique that is interview, observation and study of lust. The result of this research is packing of talk show of “Polemik On TV” in improving its rating and share based on stages of broadcasting management such as Planning, Program Production, Program Execution, and Program Evaluation. All stages of broadcasting management are also based on the control of the organization that is Simple Control (Simple Control).
Semiotics in Signs, Symbols and Brands (Semiotika dalam “tanda”, simbol dan merek)
Authors: Suparmo Ludwig
Published: January 2019

Modern day science on Semiotics, not only study ‘signs’ - it goes much deeper than that - the study goes further into how meaning is formed. The study goes on how people first of all interpreted a sign, how they then draw on cultural or personal experience to understand a sign. In that sense semiotics is about communication. Whilst in communication signs and symbols are common tools, signs and symbols can take different forms. Generally, it is an object representing another to give it an entirely different meaning that is much deeper and more significant. The paper is a qualitative research based discussions on some of the signs and symbols which the writer is curious in exploring further after his studies about brands and branding. Understanding through semiotics, some most common signs and symbols are interestingly revealed. During the research heraldry and coats of arms came to the picture.  The study hopes to enlighten academics and practitioners in graphic design and advertising as well as marketing to understand better about branding and communication. The article also found out suggestions of some basic hints on how to design meaningful symbols.
Kualitas Komunikasi Interpersonal Dosen Dan Motivasi Mahasiswa Dalam Menulis Skripsi
Authors: Pratama Ryan Adam
Published: January 2019

Penelitian ini membahas tentang kualitas komunikasi interpersonal, saat ini masih banyak dosen dan mahasiswa yang belum dapat menciptakan komunikasi yang efektif dalam membimbing mahasiswa menulis skripsi. Komunikasi yang efektif dalam hal ini maksudnya adalah adanya kenyamanan ketika berbicara antara dosen dengan mahasiswa dan adanya interaksi yang baik yang terjadi didalam proses pembimbingan skripsi antara dosen dengan mahasiswanya. Teori yang digunakan adalah teori kualitas efektivitas komunikasi interpersonal dalam ancangan humanistik adakalanya dinamai ancangan lunak ada lima kualitas umum yang dipertimbangkan: keterbukaan, empati, sikap mendukung, rasa positif dan kesetaraan (Devito, 1997). Teori motivasi Kebutuhan, Dorongan, Tujuan (Mudjiono, 2010). Penelitian ini menggunakan pendekatan kuantitatif, dengan metode survei eksplanatif untuk mengukur hubungan dua variabel. Pengumpulan data menggunakan kuesioner. Sampel penelitian adalah mahasiswa kelas reguler tingkat akhir di STIKOM InterStudi periode 2016-2017 ganjil. Hasil  pengumpulan data diolah dalam SPSS. Teknik sampling yang digunakan adalah Total sampling, teknik pengambilan sampel dimana jumlah sampel sama dengan populasi. Peneliti memilih teknik ini karena total keseluruhan mahasiswa yang sedang melakukan skripsi yaitu sebanyak 70 mahasiswa kelas reguler. Kesimpulan kualitas komunikasi interpersonal dosen dan motivasi mahasiswa dalam menulis skripsi memiliki nilai pengaruh yang kuat. Dilihat dari hasil perhitungan regresi dapat diinterpretasikan bahwa kualitas komunikasi interpersonal dosen terjadi peningkatan yang besar terhadap motivasi mahasiswa dalam menulis skripsi.
Promosi Bisnis Untuk Meningkatkan Omzet Penjualan
Authors: Hamdan Yusuf , Ratnasari Anne , Sofyan Aning , Tandika Dikdik
Published: January 2019

Pelaku usaha yang tergabung dalam Asosiasi Pasar Tani Sabilulungan aktif mengembangkan berbagai jenis usaha, namun dalam aktivitasnya terkendala salah satu masalah yaitu pemasaran. Pelaku usaha sebagai anggota asosiasi tersebut kurang memiliki keterampilan dalam mempromosikan bisnisnya yang seharusnya dapat ditransformasikan menjadi penjualan. Masalah tersebut menjadi dasar dari kegiatan Pengabdian Kepada Masyarakat (PKM) yang akan diselenggarakan ini. Materi  pelatihan berisi perencanaan bisnis dan model bisnis, bentuk promosi bisnis, penerapan promosi bisnis dalam meningkatkan omzet penjualan, dan simulasi berupa menyusun pesan promosi bisnis melalui leaflet. Metode pelatihan yang digunakan yaitu ceramah, diskusi, dan simulasi. Kegiatan PKM ini merupakan pelatihan yang baru pertama kali diselenggarakan. Tujuannya untuk meningkatkan pengetahuan dan keterampilan peserta dalam memahami perencanaan dan model bisnis, bentuk promosi bisnis, dan penerapannya dalam meningkatkan omzet penjualan, serta  menyusun  pesan promosi bisnis melalui leaflet. Evaluasi pelatihan dilakukan tes awal (pretest), untuk mengukur pengetahuan dan keterampilan promosi bisnis. Hasil pengukuran pretest peserta kurang memiliki pengetahuan yang memadai  mengenai promosi bisnis, karena hasilnya cukup. Adapun setelah peserta  mengikuti pelatihan, dilakukan postest, peserta memperoleh nilai yang sangat tinggi pada aspek pengetahuan dan pada saat simulasi (praktek) promosi bisnis. Dengan melakukan promosi bisnis, peserta  diharapkan dapat meningkatkan omzet penjualan produknya.
Public Relations dalam Membina Hubungan dengan Media
Authors: Herika Diajeng , Ruliana Poppy
Published: January 2019

The main purpose of this paper is to know and examine the importance of the role of public relations in developing media relations, both traditional media and social media used to build the image or reputation of the company. Media relations involves collaborating with the media in the form of printed media, electronic media and online media to inform the mission, policies and practices of the organization in a positive, consistent and reliable way. Typically, this means coordinating directly with the people responsible for producing news and features in the mass media. 'The purpose of media relations is to maximize positive coverage in the mass media
Komunikasi Downward dalam Peningkatan Produktivitas PT. Sasa Inti
Authors: Apriyanti Herfira , Riyanto Riyanto
Published: January 2019

Abstrak Era globalisasi terjadi dengan kecepatan tinggi menyentuh aspek kehidupan manusia, menerobos dinding geografis, kebangsaan, kebudayaan dan peradaban dunia sehingga muatan global tidak dapat dicegah dan berkembang transparan terhadap perkembangan informasi. Komunikasi organisasi adalah pengiriman dan penerimaan pesan di dalam kelompok formal maupun informal, untuk membentuk saling pengertian dan mempunyai andil, berdampak membangun budaya organisasi. Produktivitas perbandingan antara hasil luaran dengan masukan. Dan pemanfaatkan menghasilkan barang atau jasa. Semakin tinggi perbandingannya, semakin tinggi produk yang dihasilkan. Aspek output atau input yang digunakan indeks produktivitas buruh, produktivitas biaya langsung, produktivitas biaya total, produktivitas produksi.PT Sasa Inti sebagai obyek penelitian karena masih bertahan di tengah perkembangan dan persaingan bisnis industri yang ketat. Keberhasilan komunikasi mendorong karyawan menghasilkan Sasa yang semakin meningkat karena merasa bahwa pimpinan dapat menjalin komunikasi yang baik dengan mereka.Komunikasi binis, tidak terlepas produksi, pembelian, penjualan, maupun pertukaran barang dan jasa yang mempunyai tujuan laba untuk kelangsungan kegiatan bisnis itu. Bisnis adalah kegiatan komersial dan industrial yang menghasilkan barang dan jasa untuk meningkatkan dan mempertahankan kehidupan, berorientasi dan tanggung jawab sosial penyediaan barang dan jasa Komunikasi downward merupakan bagian komunikasi organisasi yang merujuk pada pertukaran informasi dan gagasan dalam organisasi. Pada komunikasi formal, informasi ke bawah, penyampaian pesan berjalan baik, keputusan mengalir ke bawah transformasi merupakan komunikasi dari atas ke bawah, terkait tanggung jawab dan kewenangannya dalam organisasi. Manajer menggunakan komunikasi ke bawah menyampaikan informasi, mengarahkan, mengoordinasikan, memotivasi, memimpin, dan mengendalikan kegiatan. Berdasarkan penelitian yang dilakukan, maka: (1) penelitian komunikasi downward berpengaruh signifikan terhadap intensi, kekhususan, deksriptif, kemanfaatan, tepat waktu, kesiapan, kejelasan, dan validitas PT Sasa Inti. (2) Terdapat peningkatan produktivitas perusahaan berpengaruh secara signifikan terhadap produktivitas fisik dan produktivitas nilai PT Sasa Inti. (3) Komunikasi downward berpengaruh signifikan terhadap peningkatan produktivitas perusahaan pada PT Sasa Inti
PENGEMBANGAN PERANGKAT PEMBELAJARAN SAINS SMP BERORIENTASI PADA PENDEKATAN SAINS TEKNOLOGI MASYARAKAT UNTUK MENINGKATKAN KEMAMPUAN KOGNITIF
Authors: Hunaepi Hunaepi
Published: January 2019

The availability of science learning instructional that integrate between the science, society and technology is still very limited so that it needs to be developed science-learning instructional with science, society and technology oriented. This learning instructional development aims to develop science learning instructional with science, technology and society approach oriented to improve students' cognitive abilities. Learning instructional that have been developed in trials in class VIIb with a number of 30 students at State Yunior High School 2 Sepulu Madura through One Group Pretest-Postest Design. Instructional development uses the Kemp development model. The results showed that RPP validation, student textbooks, Student Worksheets, and category rating sheets were feasible with validity of instrument reliability of RPP 91%; Student book 90%; Student Worksheet 92%. The highest teacher activity is to guide the experiment by 22% at meeting one (P1) and at the second meeting (P2) 24%. Highest student activity is Observing with 22% (P1) and 24%  (P2). Lesson learned on (P1 and P2) is implemented (92%) and (75%). Student responses to the instructional and learning are good categorized or students respond positively. Cognitive abilities seen from the completeness of Pretest learning indicators averaged <60 categorized incomplete, Postest average ≥ 60 categorized complete, individual completeness on average Pretest <60 categories incomplete, Postest average ≥ 65 category of completeness, and mastery classically on Pretest <75 is categorized incomplete, whereas in Postest ≥ 75 is complete. The conclusion of the research shows that the approach of Science, Techonology, and Society on damage and environmental pollution subject material in State Junior High School 2 Sepulu can improve students' cognitive abilities and learning instructional used in this research categorized as valid and reliable.
APLIKASI SENYAWA AMIDA HUMAT SEBAGAI IONOFOR DALAM MEMBRAN ELEKTRODA SELEKTIF ION Ni (II)
Authors: Muhali Muhali
Published: January 2019

The amide compound derived from humic acid has been applied as ionophore in ion selective electrode (ISE) measurement based on poly vinyl chloride (PVC) membrane.  The carboxylic acid group of the humic acid was first modified to the corresponding amide and is expected to form complex with the target cation. This work aims at obtaining selectivity coefficient towards Ni2+ ion.  The products of the reactions were observed using infra red (IR) spectrometer.  The amide compound derived from humic acid was immobilized into the membrane with composition percentage (w/w) as the following 32% of PVC, 64% of plasticizer of either [orto-nitrophenil octyl ether (NPOE) or dioctylpthalate (DOP) or dibenzyl ether (DBE)], 2% of lipophilic anion [sodiumtetraphenylborate (NaTPB), and oleic acid], and 2% of  ionophore the humic amide, respectively. The results show that ISE membrane give selective response to the Ni2+ ion at pH of 4,5 with response time of approximately 80 seconds. Among many others,  the cations that give strong emf interference include Cu2+,Li+,  K+, Pb2+, Na+, Zn2+, and Ca2+. The Nernstian factor of ISE membrane is close to +28 mV per decade with  linear range of concentration of pNi2+ of 1-6, with composition PVC membrane,  DBE as plasticizer, oleic acid as lipophilic anion, and humic amide as ionophore, respectively.
EXPLORATION OF RBC AND HGB IN MENCIT (Mus musculus) HYPEROLOLERINOLEMIA
Authors: Nofisulastri Nofisulastri , Mirawati Baiq
Published: January 2019

So far there is no clear information about RBC and HGB linkage with hypercholesterolemia, especially for arteriosclerosis and hypertension patient. In the future, this research is expected to add a repertoire of knowledge and people knew about hypercholesterolemia and the utilization of appropriate alternative medicine. A total of 20 mice (Mus musculus) age ± 2 months of hypercholesterolemia caused by cholesterol-rich diet (ad libitum). The data were analyzed by analysis of variance based on Randomized Block Design (RAK) 1% with 5 (five) groups and 4 replications (positive control, negative group, and the group of celery extract dose 0,5 ml with concentration 25%, 50%, 100%). It was concluded that HGB in line with RCB (either treated with celery extract or mice treated with hypercholesterolemia) and the provision of celery extract significantly did not affect RBC and HGB with total blood cholesterol level of mencit.
APPLICATION OF THIN LAYER CHROMATOGRAPHY (Tlc) AND GASS CHROMATOGRAPHY-MASS SPEKTROSCOPY (GC-MS) AS ANALYSIS TECHNIQUE OF PHITOSTEROL COMPOUNDS IN WATER EXTRACT OF BEAN FRUIT (Phaseolus vulgaris L.)
Authors: Jannah Hilyatul , Sudarma I Made , Andayani Yayuk
Published: January 2019

Phytosterols are vegetable sterols, included in secondary metabolite compounds and have broad benefits in the health field. Sources of natural ingredients containing phytosterol compounds have been widely used as medicinal ingredients, one of which is beans (Phaseolus vulgaris L.). This research is an exploratory research, aimed to analyze the content of phytosterol compounds in water extract, and the result of partition of water extract of beans using TLC and GC-MS technique. The result of phytochemical test showed that from 13 extracts of partition result with n-hexane solvent, DCM, ethyl acetate, and methanol, only 5 extracts showed positive steroid, including water extract, hexane residue, DCM residue, methanol extract, and methanol residue. The TLC test results on the hexane residue of the partition from the water extract were suspected as stigmasterol compound because it has the price of Rf = 0.9 equal to the standard Rf compound of stigmasterol, whereas the GC-MS product showed negative phytosterol.
PENGEMBANGAN BUKU SISWA SMP KELAS VIII DENGAN MATERI PRISMA DAN LIMAS YANG BERPIJAK PADA MASALAH KONTEKSTUAL, PENGGUNAAN MODEL, DAN PENEMUAN TERBIMBING
Authors: Syarifudin Syarifudin
Published: January 2019

The development of this student book uses the Thiagarajan development model. The development of this model has four stages: definition, planning, development, and dissemination. In addition, the development of students' books is based on realistic mathematics education (PMR), especially on contextual issues, the use of models, and guided discovery. Subsequently the student's book has validated experts and practitioners to be tested in the classroom. Expert and practitioner scores were 3.46 (very valid). Furthermore, it was tested in the classroom in order to see the practicality and effectiveness. Practicality of students' books is measured through the implementation of learning in the learning process. Student book implementation data as a whole is 'high categorized'. Student book effectiveness is measured through three indicators: (1) student activity, (2) student response, and (3) mastery learning. Through classroom tests, data on students' activity observation outcomes during the learning process as a whole are 'active criteria'. Students give a positive response. Post-test data found that none of the students scored under 65% of the standard learning objectives to be achieved. Furthermore, if seen classically obtained an average of 83.1%.
PENERAPAN METODE PEMBELAJARAN STUDENT FACILITATOR AND EXPLAINING BERBASIS PETA KONSEP UNTUK MENINGKATKAN AKTIVITAS DAN HASIL BELAJAR SISWA
Authors: Masjudin Masjudin , Arini Ni Ketut Resna
Published: January 2019

Students' learning activity and achievement are very low. This is because the teaching method used by the teacher is always monotonous and boring. Therefore, the purpose of this study is to describe the steps of learning methods Student Facilitator and Explaining-based Concept Map in order to improve the activity and learning outcomes of students of grade VII B SMPN 1 Jonggat on the subject matter of square. This research is a classroom action research consisting of two cycles containing planning, implementation, observation and reflection phase. Subjects of this study amounted to 28 students. The research instrument used is the learning achievement test given at the end of each cycle, the observation guideline to get a direct description of the learning activities through the application of learning methods of student facilitator and explaining based on concept maps, as well as interview guidelines to strengthen the research results obtained. The data obtained were analyzed using learning mastery. Indicators of this study is an increase in the average score of student learning outcomes and student learning activities. The results showed an increase in the average score of student learning outcomes in the first cycle of 79.29 with classical completeness 85.71% increased in cycle II to 88.08 with 92.86 classical completeness. The average score of student learning activity in cycle I was 16.48 (active category) increased in cycle II to 18,11 (active category). We conclude that by applying the steps of student learning methods facilitator and explaining based on concept maps in teaching and learning process can improve student activity and learning outcomes
IMPLEMENTASI MODEL PROBLEM BASED LEARNING BERBANTUAN ALAT PERAGA UNTUK MENINGKATKAN AKTIVITAS DAN HASIL BELAJAR FISIKA SISWA KELAS VIII SMPN 22 MATARAM
Authors: Jiniarti Baiq Ewik , Sahidu Hairunnisyah , Verawati Ni Nyoman Sri Putu
Published: January 2019

This research is a Classroom Action Research (CAR) which aims to increase the students activities and physics learning outcomes with implementation problem based learning model assisted by props in grade VIIIA SMPN 22 Mataram. This classroom action research conducted by two cycles, with each cycle consisting of two meetings. Action research consists of four stages: planning, implementation, observation and evaluation, and reflection. The implementation of classroom action research was successful because it obtained an average score of students learning activities from the first cycle to the second cycle was on active criterion to be very active with average scores of 16,875 to be 22,75. Cognitive learning outcomes of students with the average value of the first cycle of 74,13 with classical completeness 73,91% increased with the average value of second cycle of 79,35 with classical completeness 86,96%. Affective students learning outcomes from the first cycle to the second cycle with an average value of 66,195 to 78,95 on the criteria good enough to be good. Psychomotor students learning outcomes from the first cycle to the second cycle an average value of 71,63 to 85,655 are the criteria enough skilled become skilled. Thus, this research can be concluded by implementation of problem based learning model aided by props can increase students activities and learning outcomes of phyics grade VIIIA  SMPN 22 Mataram.
Pengembangan Bahan Pembelajaran IPA Berbasis Biotechnopreneurship untuk Melatih Life Skills Siswa SMP
Authors: Agustin Nurhaningtyas , Ibrahim Muslimin , Widodo Wahono
Published: January 2019

This study aims to produce biotechnopreneurship-based science learning materials that are valid, practical, and effectiveto facilitate junior high school students’ life skills. This research is development research using a 4D development model that produces Biotechnopreneurship-based science learning materials equipped with the syllabus, lesson plan, student worksheets, life skills tests. Learning materials were tested on 35 junior high school students with the one-group pretest-posttest design. Data analysis is descriptive qualitative with the results: (a) validation of learning materials with valid categories (score 3-4); (b) readability of learning materials with good categories (c) implementation of learning in good categories (score 3.7); (d) student responses were positive; (e) students’life skills generally increase (N-gain 0.71 with high category). The indicator of Life Skills that experiences the most significant increase between pre test and post test is the aspect of making a decision. Indicators of information gathering are indicators that have a low increase after learning. Based on the results of the study it can be concluded that the biotechnopreneurship-based science learning materials are valid, practical, and effective to facilitate junior high school students’ life skills.
Studi Pendahuluan Keterampilan Pemecahan Masalah dan Metakognisi Siswa SMA berbasis UAPAC+SE
Authors: Nasir Muhammad , Madlazim Madlazim , Sanjaya I Gusti Made
Published: January 2019

Metacognition skills such as procedural knowledge, declarative knowledge, conditional knowledge, planning, monitoring, and evaluating are needed to understand problem-solving skills such as controlling and self-evaluation, planning and application, plan analysis, and understanding the problem. This study aims to describe problem-solving skills and student cognition in solving problems in physics subjects of XI IPA students in SMA Negeri 8 Samarinda. The population of the study sample amounted to 116 students grouped based on the results of physics achievement tests as many as 40 questions, divided into three groups, namely: groups of 32 students (28%), middle groups 61 students (53%), and groups under 23 students (20%). The research method used is a descriptive approach to the form of research in the form of case studies. Indicators of problem-solving skills, consisting of understanding the problem, analysis of the problem, planning, application of the plan, controlling & self-evaluation (UAPAC + SE). While metacognition uses the indicator of the Metacognitive Awareness Inventory (MAI). Based on data analysis, it can be concluded that the average problem-solving skills of upper group students (68%) are the high category, middle group students (34%), and lower group students (33%) are low categories. While the average metacognition skills are upper group students (66%) in the high category, middle group students (36%), and lower group students (33%) in the low category.
Uji Aktivitas Antioksidan dari Ekstrak Buah Sentul (Sandoricum koetjape Merr.)
Authors: Bayani Faizul
Published: January 2019

Sentul fruit (Sandoricum koetjape Merr.) is representing one kind of fruit that is amount enough abundance at West Nusa Tenggara, but it hasn’t been exploited in an optimal fashion and more castaway useless. Parts of Sentul plant have been applied as traditional medicine. Sentul fruit can be oxidated by the browning reaction when it is pared or sliced, these symptoms showed the existences of phenolic compounds so that very potential as an antioxidant. To analyze the total phenolic and antioxidant activity of methanol extract of Sentul fruit, the Folin-Ciocalteu and DPPH methods have been used. Results of analysis for three treatment types of samples ( A, B, and C) shown their total phenolic: 6,9 %, 12,86 %, and 9,36 % respectively and also their antioxidant activity shown by values of IC50 of each: 43,36 ppm (1/IC50 = 0,023 ppm-1); 40,53 ppm (1/IC50 = 0,025 ppm-1); and 44,43 ppm (1/IC50 = 0,0225 ppm-1) respectively. These results indicated that Sentul fruit is very potential as an antioxidant.
Pengembangan Perangkat Pembelajaran IPA Model Inkuiri Terbimbing (Guided Inquiry) untuk Meningkatkan Pemahaman Konsep Siswa SMP
Authors: Hermanto Fery , Soetjipto Soetjipto , Hidayat M. Thamrin
Published: January 2019

The objective of this research to produced learning materials were valid, practical, and effective to improved student’s conceptual understanding. The development of learning material used the ADDIE (Analyze, Design, Develop, Implement, and Evaluate) model and was tried out at VIII-A and VIII-B on SMP Negeri 1 Bandung Tulungagung with One Group Pretest-Posttest Design. Data were collected by used observation method, tests, and questionnaires. Data was analyzed descriptive analysis quantitatively and qualitatively. The results showed that 1) the learning material are valid categorized; 2) learning material in terms of practical category in (a) feasibility of instruction good category, (b) Obstacles for learning could be overcome, (c) student’s activity was active category; (3) the learning material effectiveness in terms of; (a) The response of student’s positively, and (b) student’s conceptual understanding increased significant after learning material was tried out. It could be concluded that the intervention design was valid, practical and effective to improved student’s learning achievement.
Validitas Instrumen Karakterisasi Kemampuan Metakognisi Mahasiswa Calon Guru Fisika
Authors: Asy'ari Muhammad , Ikhsan Muhamad , Muhali Muhali
Published: January 2019

The purpose of this study was to describe the validity of the metacognition ability instruments which include metacognition knowledge and metacognition awareness. The metacognition knowledge instrument in the form of essay tests totaling 20 items, while the metacognition awareness instrument is the Metacognition Awareness Inventory (MAI). This study is a descriptive qualitative study to assess and obtain the quality of metacognition knowledge and metacognition awareness instruments that are valid to characterize student metacognition abilities. The instrument of student metacognition knowledge was validated by two physics educations’ experts, the instrument of metacognition knowledge was also empirically validated by involving 30 physics education students as respondents. Unlike the instrument of metacognition knowledge, the metacognition awareness instrument is only empirically validated by involving 90 students across the study program as respondents. The results showed: (1) the validator's assessment of the metacognition knowledge instrument both from the content validity aspect and construct validity was valid categorized (range of scores> 3.6) and reliable for the two components of assessment in a row namely Percentage of agreement = 97.3% and 98.6%, (2) the empirical validity of the metacognition knowledge instrument was declared valid (Pearson Correlation > rtable) and reliable (Cronbach's alpha = 0.944), (3) the instrument of metacognition awareness was declared reliable (0.6 ≤ α ≤ 1.0) although some components of the student metacognition awareness instrument are empirically declared invalid. These results indicate that the instrument of metacognition ability is valid to use in characterizing the prospective physics teacher students’ metacognition ability.
PENGARUH STRATEGI PEMBELAJARAN PREDICTION GUIDE BERBANTUAN MIND MAPPING TERHADAP MOTIVASI DAN HASIL BELAJAR KOGNITIF SISWA KELAS VII SD SMP NEGERI SATAP 2 LINGSAR
Authors: Sarianingsih Ni Komang Yuni , Nurhidayati Siti , Samsuri Taufik
Published: January 2019

Penelitian ini bertujuan untuk mengetahui pengaruh strategi pembelajaran Prediction Guide berbantuan Mind Mapping terhadap motivasi dan hasil belajar kognitif siswa kelas VII SD SMP Negeri SATAP 2 Lingsar. Jenis penelitian ini Quasi Eksperimen (eksperimen semu). Pendekatan yang digunakan adalah pendekatan kuantitatif dan pendekatan kualitatif dengan bentuk rancangan Posttest Nonequivalent Control Group Design. Pengambilan sampel dilakukan dengan sampling jenuh. Sampel dalam penelitian berjumlah 17 siswa untuk kelas kontrol dan 17 siswa untuk kelas eksperimen. Data dalam penelitian ini diambil pada siswa kelas sampel dengan menggunakan instrumen lembar observasi keterlaksanaan RPP, angket motivasi dengan jenis tertutup yang terdapat pernyatan positif dan negatif, dan tes hasil belajar kognitif dengan jenis pilihan ganda yang berjumlah 20 soal. Teknik pengumpulan data menggunakan lembar observasi keterlaksanaan RPP, angket motivasi dan tes hasil belajar kognitif pada materi klasifikasi makhluk hidup. Data angket motivasi dan hasil belajar kognitif yang diperoleh dianalisis menggunakan uji-t, hasil analisis data menunjukan bahwa motivasi kelas eksperimen lebih tinggi dari pada kelas kontrol, untuk uji-t motivasi belajar siswa diperoleh t hitung 10,55 sedangkan t tabel pada taraf signifikan 5% 2,04 sehingga t hitung > t tabel maka Ha diterima. Hasil belajar kognitif siswa kelas eksperimen yang diberi strategi pembelajaran Prediction Guide berbantuan Mind Mapping lebih tinggi dari kelas kontrol, dan untuk uji-t hasil belajar kognitif siswa t hitung 6,39 sedangkan t tabel pada taraf signifikan 5% 2,04 sehingga t hitung > t tabel maka Ha diterima. Dengan demikian strategi pembelajaran Prediction Guide berbantuan Mind Mapping berpengaruh terhadap motivasi dan hasil belajar kognitif siswa kelas VII SD SMP Negeri SATAP 2 Lingsar.
Efek Penggunaan Strategi Konflik Kognitif terhadap Hasil Belajar Kognitif Siswa
Authors: Verawati Ni Nyoman Sri Putu , Afifah Gusti
Published: January 2019

This study aims to determine the effect of using the conflict cognitive strategies on students' cognitive learning achievements. This research is an experimental study using one group pretest-posttest design. The research sample was 35 students of class X MIPA 7 at SMAN 2 Mataram. The conflict cognitive strategies are conditioned in research on the subject matter of Regular Straight Motion and Regular Changed Straight Motion. Measurement of cognitive learning outcomes using test instruments and given to students as pretest and posttest. The test instrument was previously validated by 2 (two) validators on the content and construct aspects. The validation results show that the test instrument has been declared valid on the content and construct aspects with a validity (Va) level of 4.12 and 4.00. The results showed that students' cognitive learning achievements improved after learning using the conflict cognitive strategies (mean of 3.49) significant (p <0.05). These results are also supported by the results of n-gain analysis of cognitive learning achievements of students after learning with a value of 0.74 with a high category so that it is declared effective to improve students' cognitive learning achievements.
FACTORS AFFECTING THE PRODUCTIVITY OF BUILDING CRAFTSMEN ‐ STUDIES OF UGANDA
Authors: Alinaitwe Henry Mwanaki , Mwakali Jackson A. , Hansson Bengt
Published: January 2019

Poor productivity of construction workers is one of the causes of cost and time overruns in construction projects. The productivity of labour is particularly important especially in developing countries, where most of the building construction work is still on manual basis. This paper reports on a survey made on project managers of building projects in Uganda, where an increase in productivity is being sought. Respondents were required to rate using their experience how 36 factors affect productivity with respect to time, cost and quality. The survey was carried out by a questionnaire and responses received over a period of 3 months. The ten most significant problems affecting labour productivity were identified as incompetent supervisors; lack of skills from the workers; rework; lack of tools/equipment; poor construction methods; poor communication; inaccurate drawings; stoppages because of work being rejected by consultants; political insecurity; tools/equipment breakdown; and harsh weather conditions. Although lack of materials is ranked highest with regard to average rating on loss of time, it was not ranked among the top ten using the importance index that takes into account time, cost as well as work quality. The policy makers and researchers should focus on the identified major factors in order to improve productivity.
THE INFLUENCE OF SHEAR SPAN RATIO ON LOAD CAPACITY OF FIBRE REINFORCED CONCRETE ELEMENTS WITH VARIOUS STEEL FIBRE VOLUMES
Authors: Šalna Remigijus , Marčiukaitis Gediminas
Published: January 2019

This paper analyses the influence of steel fibre volume and shear span ratio on the strength of fibre reinforced concrete elements in various states of stress. 36 beams with three different shear spans (a/h = 1, 1,5, and 2 %) and three different fibre volumes (1, 1,5, and 2 %) were tested to examine how these factors influence the behaviour of such elements. Test results suggest that steel fibre volume and shear span can increase load capacity, plasticity and cracking. Experimental research showed that steel fibre volume has different influence at different shear span ratios. Regression analysis of experimental data was carried out and empirical approach showing different effect of these factors was proposed. Furthermore, test results were compared with different theoretical and empirical approaches of other authors.
ENVIRONMENTAL MANAGEMENT SYSTEMS AND CONSTRUCTION SMES: A CASE STUDY FOR SLOVENIA
Authors: Šelih Jana
Published: January 2019

Construction projects and activities are, in general, associated with a wide range of environmental impacts. Therefore the principles of sustainable development should be adopted during construction just like in any other industrial sector. At the organisation's level, one of the ways of achieving this goal is by implementing an environmental management system (EMS). The purpose of the paper is to present current environmental management trends in construction companies based on a recent study conducted for the construction industry in Slovenia, and in particular to report on how the construction SMEs perceive obstacles to the EMS implementation. The benefits and obstacles associated with ISO 14001‐compliant EMS implementation are discussed, and the results of the survey related to environmental management systems (QMS) in construction companies in Slovenia are presented and analysed. They indicate that the majority of responding construction companies has implemented QMS, and 46 % of the respondents have also established an EMS. It can be observed that, in relative terms, there are less SMEs with an EMS than larger companies with EMS; SMEs tend to see the required documentation accompanying the EMS as excessive and a major barrier for its implementation. In practice, these findings are important because they can be used to define the baseline for new initiatives that promote EMSs within construction SMEs.
RELIABILITY AND FAILURE RESISTANCE OF THE STONE BRIDGE STRUCTURE OF CHARLES BRIDGE DURING FLOODS
Authors: Witzany Jiri , Cejka Tomas
Published: January 2019

The most frequent damage and collapse of some of the spans of Charles Bridge during floods occurred namely in its central part which was exposed to an intense flow of backwater and erosion of the bridge pier footing bottom, which the originally relatively shallow foundations of the piers on boxes were not able to resist for a longer time (the floods of 1432, 1496, 1784, 1890). The stone vault bridge structure was damaged due to scouring of the bridge piers foundations, their successive tilting and settlement accompanied by degradation, and finally collapse of the adjoining bridge vaults. The foundation of piers on caissons and execution of caisson rings in 1892 and 1902 to 1904 in this part of the bridge, together with measures avoiding the piling up of objects in front of the bridge, enabled the bridge to withstand the impact of more than a hundred‐year flood during the events of August 2002. The numerical analysis proved an extreme sensitivity of the stone vault bridge structure to the effects of changes in the footing bottom shape. Due to the changes in the footing bottom (angular rotation, subsidence, shifting), normal and shear stresses arise in the stone vault bridge structure, and exceed the load‐bearing capacity of the masonry causing its disintegration. The fundamental measure to prevent the bridge vaults from failure due to the changes in the footing bottom shape is to secure reliably the bridge piers foundations. The increased rigidity of the stone bridge structure achieved by the interaction with the additionally inserted reinforcing structure and by bracing the bridge body filler does not ensure the reliability and safety of the bridge structure from flood‐related failures.
GENERAL MODEL OF ACCIDENT RATE GROWTH IN THE CONSTRUCTION INDUSTRY
Authors: Hola Bozena
Published: January 2019

The accident level in sectors of the national economy is estimated from such data as: the number of persons employed in the analysed sector, the number of victims of accidents at work and the frequency and seriousness of the accidents. The data have a static character: they inform about the accident level in the analysed period but not about its variation over time. Also the pace of work contributes to accidents at work. The accident level and the production volume change over years. It is essential to be able to determine the rate of variation of two quantities. For this purpose a model enabling the assessment of dynamic changes in the investigated phenomena has been developed. Besides accident indices the model takes into account indices which measure the economic effects of construction production.
CENTRIFUGALLY MANUFACTURED HOLLOW CONCRETE‐FILLED STEEL TUBULAR COLUMNS
Authors: Kuranovas Artiomas , Kvedaras Audronis Kazimieras
Published: January 2019

Hollow concrete‐filled steel tubular elements (H‐CFSTs) represent a type of composite steel‐concrete elements. These elements are usually produced by spinning. During this process wet concrete mix in the steel tube is displaced and compacted by centrifugal force and the concrete core so formed achieves better physical and mechanical properties in comparison with other compaction methods. These improvements are related to concrete density, Young's modulus, Poisson’ s ratio, compressive strength, deformability as well as to a more uniform distribution of fine and coarse aggregates and binding particles along the thickness of the hollow concrete core formed by multi‐layering centrifugation process. The peculiarities of the spinning process, recommendations for proportioning the components for the specimens manufacture, spinning time needed for displacement and compaction of concrete mix, preparation of specimens for testing and testing methods used are presented in this paper.
Evaluation of the Vertical Scale Height of L Dwarfs in the Galactic Thin Disk
Authors: Sorahana Satoko , Nakajima Tadashi , Matsuoka Yoshiki
Published: January 2019

Using data release 1 of the Hyper Suprime-Cam Subaru Strategic Program covering about 130 square degrees at high galactic latitudes, we have obtained L dwarf counts based on the selection criteria on colors, limiting magnitude, and PSF morphology using the i, z, and y bands. Using these criteria, we have detected 3665 L dwarfs brighter than z = 24. The surface number counts obtained differentially in z magnitude are compared with predictions of an exponential disk model to estimate the thin-disk scale height in the vicinity of the Sun. In the exponential disk model, we first fix the local luminosity function (LLF) to the mean LLF of Cruz et al. and derive the best-fit scale height of 260 pc. However, this fit appears to be poor. We then allow the LLF to vary along with the scale height. We use the LLF of Cruz et al. as a starting point. The best-fit model is found for the vertical scale height of 380 pc. However, the χ
2 minimum is rather broad and the 90% confidence interval is between 320 and 520 pc. We investigate another model by varying the scale height and the density of the brightest magnitude bin, while other magnitude bins are fixed to the mean LLF of Cruz et al. We find an equally good fit with the two free parameters and the best-fit scale height is again 380 pc, but the 90% confidence interval is between 340 and 420 pc.
High-velocity Bullets from V Hydrae, an Asymptotic Giant Branch Star in Transition: Ejection History and Spatio-kinematic Modeling
Authors: Scibelli S. , Sahai R. , Morris M. R.
Published: January 2019

The carbon star V Hydrae (V Hya) provides new insight into the nature of the launching mechanism of jet-like outflows that are believed to be the cause of the poorly understood transition phase of asymptotic giant branch stars into aspherical planetary nebulae. V Hya has been shown to periodically eject collimated gas blobs at high velocities (“bullets”). By analyzing data from Hubble Space Telescope/Space Telescope Imaging Spectrograph 2D spectra, obtained at six epochs spaced over a decade that show four successively ejected bullets with a spacing of 8.5 yr, we have created kinematic models of the dynamical evolution of a specific bullet (#1) for the first three observed epochs (2002, 2003, 2004) using a 3D spatio-kinematic code, SHAPE. Using these models, we fit the observed morphology, line-of-sight velocity, proper motion, and intensity for the extended, gaseous bullet as a function of time over a period of 2 yr, in order to constrain its 3D movement and the evolution of its physical properties over this period. Our results suggest that although bullet #1’s motion is predominantly ballistic, there are small but significant changes in the position angle and inclination angle of the long (symmetry) axis of the bullet that tilt it progressively toward the symmetry axis of the bipolar molecular nebula around V Hya. In contrast, bullet #3 shows strong acceleration soon after ejection. We discuss the possibilities that bullet acceleration is caused by a nonradial magnetic field and/or by hydrodynamic interaction with the ambient gas through which the bullet is traveling.
Understanding the Reconstruction of the Biased Tracer
Authors: Wang Xin , Pen Ue-Li
Published: January 2019

Recent development in the reconstruction of the large-scale structure has seen significant improvement in restoring the linear baryonic acoustic oscillation (BAO) from at least the nonlinear matter field. This outstanding performance is achieved by iteratively solving the Monge–Ampere equation of the mass conservation. However, this technique also relies on several assumptions that are not valid in reality, namely the longitudinal displacement, the absence of shell-crossing, and the homogeneous initial condition. In particular, the conservation equation of the tracers comprises the biasing information that breaks down the last assumption. Consequently, direct reconstruction would entangle the nonlinear displacement with complicated bias parameters and further affect the BAO. In this paper, we formulate a theoretical model describing the reconstructed biased map by matching the tracer overdensity with an auxiliary fluid with vanishing initial perturbation. Regarding the performance of the reconstruction algorithm, we show that even though the shot noise is still the most significant limiting factor in a realistic survey, inappropriate treatment of the bias could also shift the reconstructed frame and therefore broaden the BAO peak. We suggest that, in principle, this bias-related BAO smearing effect could be used to independently self-calibrate the bias parameters.
Imaging Observations of Chromospheric Evaporation in a Circular-ribbon Flare
Authors: Zhang Q. M. , Li D. , Huang Y.
Published: January 2019

In this paper, we report our multiwavelength imaging observations of chromospheric evaporation in a C5.5 circular-ribbon flare (CRF) on 2014 August 24. The flare was observed by the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory, the X-ray Telescope (XRT) on board the Hinode spacecraft, and the ground-based Nobeyama Radioheliograph. The CRF consisted of a discrete circular ribbon with a diameter of ∼1′ and a short inner ribbon observed in ultraviolet (UV), extreme-ultraviolet, soft X-ray (SXR), and especially in 17 GHz. The peak time (∼04:58 UT) of the flare in 17 GHz coincided with that in UV 1600 Å and SXR derivative as a hard X-ray proxy, implying the peak time of impulsive energy deposition in the lower atmosphere. Shortly after the peak time, converging motion and filling processes in the flare loop were revealed in AIA 131 Å and two XRT filters (Be_thin and Be_med), which are clear evidence for chromospheric evaporation upflows. The chromospheric evaporation lasted for ∼6 minutes until ∼05:04 UT. The temperature, density, and apparent velocities of the upflows are ∼107 K, ∼1.8 × 1010 cm−3, and 50−630 km s−1 with a mean value of ∼170 km s−1. By comparison with previous models, we are able to estimate that energies above 5 × 1010 erg cm−2 s−1 are likely needed to explain the observational results. Since heating by thermal conduction does not seem to provide enough energy, alternative mechanisms such as nonthermal electrons or Alfvénic waves might need to be invoked.
An Analytical Model of the Kelvin–Helmholtz Instability of Transverse Coronal Loop Oscillations
Authors: Barbulescu Mihai , Ruderman Michael S. , Doorsselaere Tom Van , Erdélyi Robert
Published: January 2019

Recent numerical simulations have demonstrated that transverse coronal loop oscillations are susceptible to the Kelvin–Helmholtz (KH) instability due to the counterstreaming motions at the loop boundary. We present the first analytical model of this phenomenon. The region at the loop boundary where the shearing motions are greatest is treated as a straight interface separating time-periodic counterstreaming flows. In order to consider a twisted tube, the magnetic field at one side of the interface is inclined. We show that the evolution of the displacement at the interface is governed by Mathieu’s equation, and we use this equation to study the stability of the interface. We prove that the interface is always unstable and that, under certain conditions, the magnetic shear may reduce the instability growth rate. The result, that the magnetic shear cannot stabilize the interface, explains the numerically found fact that the magnetic twist does not prevent the onset of the KH instability at the boundary of an oscillating magnetic tube. We also introduce the notion of the loop σ-stability. We say that a transversally oscillating loop is σ-stable if the KH instability growth time is larger than the damping time of the kink oscillation. We show that even relatively weakly twisted loops are σ-stable.
Variable Clinical Phenotypes and Relation of Interferon Signature with Disease Activity in ADA2 Deficiency
Authors: Insalaco Antonella , Moneta Gian Marco , Pardeo Manuela , Caiello Ivan , Messia Virginia , Bracaglia Claudia , Passarelli Chiara , De Benedetti Fabrizio
Published: January 2019

Objective.

An upregulation of type I interferon (IFN) stimulated genes [IFN score (IS)] was described in patients with adenosine deaminase 2 deficiency (DADA2). We describe the clinical course of 5 such patients and the role of IS as a marker of disease activity and severity.

Methods.

Expression levels of IS were determined by quantitative real-time PCR.

Results.

Five white patients were identified as carrying CECR1 mutations. The IS before treatment was elevated in 4 out of 5 patients and decreased after treatment.

Conclusion.

Our data confirm the high variability of DADA2 and suggest type I IS as a biomarker of disease activity.