bluuebunny/crossref_metadata_2025 huggingface dataset:
The effect of modality on oral task performance in voice, video, and VR-based environments
Authors: Tokutake Hayato , York James , Nakayama Hiroshi
Published: February 2021

Synchronous computer-mediated communication (SCMC) is a topic of great interest in CALL literature where research has investigated the effectiveness of SCMC compared to traditional face-to-face instruction. However, there are few studies that investigate the intrinsic differences in SCMC modes, particular in terms of their effect on oral communication. At the JALTCALL 2019 conference, we introduced research which assessed the anxiety-reducing affordances of VR. This year we presented results of a follow-up study which focused on the effect of SCMC modality on learners’ speaking performance. 30 participants (15 pairs) completed a spot-the-difference task within three different SCMC modes: voice, video, and virtual reality (VR). Using the complexity, accuracy, and fluency (CAF) model, participants’ oral task performances were analysed. Results suggest that the voice mode promoted the highest structural complexity, however, the VR mode promoted the highest lexical complexity. Findings therefore suggest that different modes of communication may be used to focus on different skill development. Additionally, practitioners should consider how modality affects learner anxiety and choose the most appropriate system for their students and needs. This paper introduces the VR system, a detailed analysis of results, pedagogical implications, and future research directions for the use of VR in language teaching contexts.
PENGARUH BAURAN PROMOSI TERHADAP KEPUTUSAN PEMBELIAN MOBIL TOYOTA DI KOTA BANDA ACEH
Authors: Maulida Fadhilla
Published: February 2021

Â The purpose ofÂ  this study was to determine the effect of the promotion mix of Toyota car purchasing decisions in the city of Banda Aceh. Study sample were as many as 98 other communities in the city of Banda Aceh, which was taken by Ramdom sampling. The data was collected by distributing questionnaires. Further data analysis using statistical tools that multiple linear regression.The results showed that the advertising, sales promotion, personal selling and publicity positive influence on purchase decisions of Toyota cars in the city of Banda aceh.faktor the most dominant influence on purchasing decisions is a personal sales, sales promotion followed in second place. Based on the results whereas the t test (partial) indicates that a partial test of the four independent variables are variables advertising, sales promotion, personal selling and publicity significantly influence the purchasing decisions of Toyota Cars in Banda Aceh. Â Â Â Â Â Â Â Â Â Â Â  The conclusion that can be taken from this study is the variable advertising, sales promotion, publicity and personal pennjualan influence on purchasing decisions of Toyota cars in the city of Banda Aceh. The most significant variable is a private sale.Â Keywords : promotion mix, purchasing decisions, advertising, sales promotions, personal selling and publicity
PENGARUH KEPUASAN PELANGGAN TERHADAP LOYALITAS MEREK PADA PENGGUNA KARTU PRA-BAYAR SIMPATI
Authors: Murad Suryani
Published: February 2021

Customer Satisfaction is an initial factors to influence the intention of customers to make a repeat buying. Mark loyality is a decision by customers to buy a certain mark in comparison to the others inÂ  the same category of product.The research question is how much the influence of customer satisfaction on mark loyality for Simpati pre-paid card users.Primary data was collected directly through its object which is pre-paid card users in Banda Aceh. while Secondary data was from archival research and literature. The sample of the study consists of 50 Muhammadiyah Aceh University students users of Simpati Pre-paid card.The result of the study exhibits that customer satisfaction significantly influenceÂ  mark loyality for Simpati pre-paid card users. It is shown by somee factors namely expectation, product performance, comparability, confirmation and unsuitable. The most dominat factor is expectation, followed by product performance. Thus, the increase in ecpectation and product performance lead to the increase in mark loyality for Simpati pre-paid card users. Â
KETERKAITAN ANTAR SEKTOR DALAM PEREKONOMIAN DAERAH ISTIMEWA ACEH MELALUI ANALISIS TABEL I â€“ O
Authors: - Zuliani
Published: February 2021

Lingkage of economy between sectors in economic either economy of a country or a distric is very important to be analized. To know the economics interlated in Aceh special province, this research will observe about linkages between sectors through input â€“ output table analizing. Data that used in this research was secondary data that taken from statistic center. The date were Table I-O 1988 and I-O 1997. Eight relative dominant sectors chosen, namely rice/padi, plantation, animal husbandry, food industry, drink, tobacco and oil and natural gas sectors. Model that used was input-output model. Variabel that used: matrix output domestic product (P), matrix identity (I), input matrix coeficient from domestic input (Ad) and final request matrix sector toward product (Fd). Based on the result explained that lingkages between sectors in special Aceh province economy having change for several years. Every sector had different lingkages stage with others sector that shown through the number of the input and output sector and the sum of input coeficient that required by that sector. Inplication of result mentioned that economic sectors will have changing and increasing if technology factor and coeficient stage of every economy sector predicted in every bussiness.Â
PENGARUH HARGA, PRODUK, DAN PROMOSI TERHADAP KEPUTUSAN PEMBELIAN SEPEDA MOTOR YAMAHA DI KALANGAN MAHASISWA FAKULTAS EKONOMI UNIVERSITAS MUHAMMADIYAH ACEH
Authors: Murad Suryani
Published: February 2021

The research problem of this study is how the effect of price, quality, and promotion towards purchasing decision of Yamaha motorcycle among the students of Economic Faculty Muhammadiyah University Aceh. This study aims to identify the affect of price, productÂ  and promotion towards the purchasing decision of Yamaha motorcycle among the students of Economic Faculty Muhammadiyah University Aceh and to determine the dominant variable with significant influence to the purchasing decision of Yamaha motorcycle among the students of Economic Faculty of Muhammadiyah University Aceh.The population in this study is students who use Yamaha motorcycle in Economic Faculty of Muhammadiyah University Aceh, with the number of population is 894 students. The sample in this study was drawnÂ  by applying convenience sampling with the number of sample is 90 students which is determined by Slovin formula. The method of this study uses mutiple linier regression.The result of partial test (t-test) shows that only promotion has significant influence towards the purchasing decision of Yamaha motorcycle. This t-test was conducted by 5 percent standard of significance. While, the result of simultaneous test (uji F)Â  was gained at Fcount (17.106) Ftable (2.3205) with probability sig 0.000 0.05 which means price, quality, and promotion influence the purchasing decision of Yamaha motorcycle among the students of Economic Faculty Muhammadiyah University Aceh simultaneously. The Correlation coefficient (R)Â  is obtained at 0.611 shows the rate of the relation between dependent variable with independent variable in the strong/tight rate. while the adjusted R2 is gained at 0.352 which means 35.2 percent of the purchasing decision can be explained by the variable of price, product and promotion while 64.8 percent of the purchasing decision is influenced by other variables outside of thisÂ  study.Price, quality, and promotion has significant influence on the purchasing decision of Yamaha motorcycle among the students of Economic Faculty Muhammadiyah University Aceh simultaneously. However, partially only promotion has significant influence and dominant on the the purchasing decision of Yamaha motorcycle. Therefore, it is better for the manufacturer to be more aggresive in conducting their promotion and creating better quality with affordable price. Thus, the customer will be more interested to buy Yamaha motorcycle.Â Keywords : price, product, promotion, purchasing decisions
PENGARUH HUBUNGAN ANTAR INDIVIDU DAN PEMANTAUAN DIRI TERHADAP KINERJA KARYAWAN KANWIL PT. BANK RAKYAT INDONESIA (PERSERO) BANDA ACEH
Authors: - Nadiya , Ferliana Nelwita
Published: February 2021

This research aims to determine the effect of interpersonal relation and self monitoring toward employee performance of Kanwil PT Bank Rakyat Indonesia (Persero) in Banda Aceh. This research conducting in the certain conditions the relationship between individualÂ  is difficult to connecting among employees (peer). Likewise self monitoring were often miss communication to each other between employees.Sample of 80 employees of the bank were taken by the convenience sampling method. Data collection using questioner, and then the data were analyzed using multiple linear regression. The results found that the simultaneously and partially positive impact on the employee performance of Kanwil PT Bank Rakyat Indonesia (Persero) in Banda Aceh. Relation between the performance of Bank employees with the ability of the interpersonal relation and self monitoring closely pertained, which is shown by koefisien corralation Â® is 0.732 or 73.20 percen..Â Statistical using the F test and T test showed that both simultaneously, and the partial correlation between individual ability and self monitoring is a significant (real) on employee performance of Kanwil PT Bank Rakyat Indonesia. So that HaÂ  hypothesis is accepted and the other way Ho hypothesis is rejected. Therefore the leadership of the institutions must improve the capacity of employees to build relationship in the lead employees work environment and educate employees to be able and willing to make their own monitoring, this providing a direct and undirect effect with working performance will going better in accordance with the company vision and mission.Â Keywords: the effect of interpersonal relation,Â  self monitoring toward employee performance, PT Bank Rakyat IndonesiaÂ
PENGARUH DANA BAGI HASIL, DANA ALOKASI UMUM, DAN DANA ALOKASI KHUSUS TERHADAP TAX EFFORT (Studi pada Pemerintah Kabupaten di Madura)
Authors: Subhan Subhan
Published: February 2021

The purpose of this reseach was to know the effect of profit sharing, general allocation fund and special allocation fund to tax effort in the district in madura. Independence variable in this reseach were profit sharing, general allocation fund and special allocation fund. Dependent variable of this reseach was tax effort.The data of this research is quantitative data in the form of financial statements of Regional Government and Gross Regional Domestic Product of 2010 until 2014. While the analytical model used to test the hypothesis is multiple linear regression is based on the financial statements of Regional Government and Regional Gross Regional Domestic Product until 2014.The results show that the profit-sharing fund, general allocation fund and allocation fund partially does not affect the tax effort. Simultaneously for revenue sharing, general allocation funds and allocation funds Partially no effect on tax effort.Â Key Word : Profit Sharing, General Allocation Fund, Special Allocation Fund, Tax Effort
ANALISIS KEBIJAKAN PEMERINTAH DALAM MENGATASI PENGANGGURAN DI KOTA BANDA ACEH
Authors: Gunawan Gunawan
Published: February 2021

Tujuan penelitian ini adalah untuk mengetahui penyebab terjadinya pengangguran di Kota Banda Aceh dan untuk mengetahui kebijakan pemerintah dalam mengatasi pengangguranÂ  di Kota Banda Aceh. Penelitian ini merupakan penelitian deskriptif dengan menggunakan data kuantitatif yang merupakan data sekunder, yang dilakukan melalui pengujian teori-teori dan melaluiÂ  penelitianÂ  lapangan, dimanaÂ  metode deskriptif juga adalah untuk menganalisa data dengan caraÂ  mengumpulkan, mengolah dan menafsirkan data sehingga dapatÂ  memberikan suatu gambaran mengenai keadaan yang diteliti.Â Â Â Â Â Â Â Â Â Â  Subjek dari penelitian ini adalah Kantor Dinas Tenaga Kerja dan Kependudukan Kota Banda Aceh, Sedangkan Objek dalam penelitian ini adalah data-data mengenai kebijakan pemerintah dalam mengatasi pengangguran di Kota Banda Aceh, dimana data yang diperoleh selama tahun 2006 - 2015 dan data-data lainnya yang berkaitan dengan penelitian ini. Teknik pengumpulan data meliputi: library research (penelitiankepustakaan), dan field research (penelitianlapangan) dengan metode Â wawancara yaitu melakukan Tanya jawab sehubungan dengan permasalahan penelitiandan observasi lapangan.Â Â Â Â Â Â Â Â Â Â  Hasil penelitian menjelaskan bahwa perkembangan tingkat pengangguran di Kota Banda Aceh dari tahun 2006 sampai 2015 mengalami peningkatan terus menerus dan mencapai puncak pada tahun 2010 yaitu 17,05% dengan peningkatan sebesar 10%Â  di bandingkan tahun sebelumnya dimana pada tahun 2009 tingkat pengangguran hanya berkisar 7,70%. Pemerintah Daerah melakukankebijakan â€“ kebijakanlainnya seperti Mengembangkan wawasan, pengetahuan dan kemampuan jiwa kewirausahaan kepada Usaha Kecil dan Menengah (UKM), melakukan pembenahan, pembangunan dan pengembangan kawasan â€“ kawasan, membangun lembaga sosial yang dapat menjamin kehidupan penganggurÂ Kata Kunci: Kebijakan Pemerintah, Pengangguran,Kota Banda Aceh
PENGARUH EKSPEKTASI PELANGGAN, KELENGKAPAN PRODUK DAN HARGA TERHADAP KEPUASAN PELANGGAN ( STUDI PADA PELANGGAN INDOMARET DI KOTA BANDA ACEH )
Authors: Gadeng Tarmizi
Published: February 2021

Tujuan dalam penelitian ini adalah Untuk mengetahui besarnya pengaruh Ekspektasi Pelanggan, Kelengkapan Produk dan Harga terhadap Kepuasan Pelanggan pada Indomaret Banda Aceh baik secara simultan maupun parsial. Populasi penelitian ini seluruh konsumen yang berbelanja pada Indomaret. Tehnik penentuan sampel non probability sampling, tehnik penarikan sampel dengan purposive sampling Penarikan sampel dilakukan dengan rumus purba jumlah sampel 96 responden. Pengumpulan data dilakukan dengan membagikan lembaran pertanyaan (kuesioner) yang telah dipersiapkan kepada responden. Data primer tersebut selanjutnya dianalisis dengan menggunakn regresi linier berganda. Hasil penelitian menjelaskan Ekspektasi pelanggan berpengaruh signifikan terhadap kepuasan pelanggan pada Indomaret di Kota Banda Aceh dengan nilai t hitung lebih besar dari nilai t-tabel. Kelengkapan produk berpengaruh signifikan terhadap kepuasan pelanggan pada Indomaret di Kota Banda Aceh dengan nilai t hitung lebih besar dari nilai t-tabel. Harga berpengaruh signifikan terhadap kepuasan pelanggan pada Indomaret di Kota Banda Aceh dengan nilai t hitung lebih besar dari nilai t-tabel. Secara simultan ekspektasi pelanggan, kelengkapan produk dan harga berpengaruh signifikan terhadap kepuasan pelanggan pada Indomaret di Kota Banda Aceh dengan nilai F hitung lebih besar dari nilai F-tabel.
PENGARUH STORE ATMOSFER DAN PELAYANAN TERHADAP KEPUTUSAN PEMBELIAN PADA INDOMARET SETUI BANDA ACEH
Authors: Pristiwa Nara -
Published: February 2021

Penelitian ini bertujuan untuk mengetahui pengaruh store atmosfer yang diterima, dan Â pelayanan terhadap keputusan pembelian pada Indomaret setui Banda Aceh. Populasi dalam penelitian ini adalah masyarakat yang menjadi konsumen Indomaret setui di Kota Banda Aceh, sampel dalam penelitian sebanyak 100 responden dengan menggunakan teknik purposive sampling. Model yang digunakan dalam penelitian ini adalah analisis regresi linier berganda
PENGARUH PROSES REKRUTMEN DAN SELEKSI TERHADAP KINERJA KARYAWAN PADA PT. SURVEYOR INDONESIA CABANG BANDA ACEH
Authors: Murad, S.E., M. Si Suryani , Ulfa Nadiya
Published: February 2021

Adapun tujuan penelitian yang dilakukan adalah untuk mengetahui pengaruh mengetahui proses rekrutmen dan seleksi karyawan terhadap kinerja karyawan pada PT. Surveyor Indonesia Cabang Banda Aceh. Penelitian ini mengambil 70 karyawan yang bekerja di PT. Surveyor Indonesia Cabang Banda Aceh. Â Metode analisis data yang digunakan adalah analisis regresi linear berganda dengan bantuan SPSS Versi 21.0. Hasil penelitian ini menunjukkan bahwa variabel proses rekrutmen dan seleksi karyawan berpengaruh terhadap kinerja karyawan pada PT. Surveyor Indonesia Cabang Banda Aceh. Maka kedepannya PT. Surveyor Indonesia Cabang Banda Aceh harus dapat mempertahankan apa yang telah dilakukan sekarang dan lebih selektif juga dalam meningkatkat proses retkrutmen.Kata Kunci : Proses Rekrutmen, Seleksi Karyawan, Kinerja Karyawan
PENGARUH PANDANGAN IKLAN DAN DAYA TARIK IKLAN TERHADAP MINAT BELI SEPEDA MOTOR MATIC MEREK SCOOPY DI PT. CAPELLA DINAMIK NUSANTARA BANDA ACEH
Authors: Pristiwa Nara -
Published: February 2021

Permasalahan Â dalam Â penelitian Â ini adalah pengaruh Pandangan Iklan dan Daya Tarik Iklan terhadap Minat Beli Sepeda Motor Matic Merek Scoopy di PT. Capella Dinamik Nusantara Banda Aceh. Tujuan dalam penelitian ini adalah Untuk mengetahui pengaruh Pandangan Iklan dan Daya Tarik Iklan terhadap Minat Beli Sepeda Motor Matic Merek Scoopy di PT. Capella Â DinamikÂ  Nusantara Â Banda Â Aceh.Â  JumlahÂ  sampel Â penelitianÂ  ini Â sebanyak Â 97 responden. Data penelitian dikumpulkan melalui kuisioner, dan studi dokumentasi. Pengujian hipotesis Â menggunakan Â analisis Â regresi Â linierÂ  berganda, Â uji Â F dan Â uji Â t Â dimaksud Â untuk mengetahui secara serempak dan secara parsial pengaruh variabel independen terhadap variabel dependen pada tingkat kepercayaan 95% (Î± = 0,05). Â Hasil penelitian berdasarkan uji simultan menunjukan bahwa variabel Pandangan Iklan dan Daya Tarik Iklan berpengaruh signifikan terhadap Minat Beli Sepeda Motor Matic Merek Scoopy di PT. Capella Dinamik Nusantara Banda Aceh. Sedangkan secara parsial variabel Pandangan Iklan dan Daya Tarik Iklan berpengaruh signifikan terhadap Minat Beli Sepeda Motor Matic Merek Scoopy di PT. Capella Dinamik Nusantara Banda Aceh
PELAKSANAAN PERIZINAN USAHA ANGKUTAN DAN PERLINDUNGAN PENGGUNA JASA ANGKUTAN BARANG UMUM
Authors: Elfianti Tety
Published: February 2021

Undang-Undang Republik Indonesia Nomor 22 Tahun 2009 tentang lalu lintas dan angkutan jalan (UULLAJ) adalah untuk menciptakan tatanan transportasi baik orang dan barang jalan. Dengan menyadari pentingnya peran transportasi dan lalu lintas angkutan jalan harus diatur dalam sistem transportasi terpadu nasional dan jasa transportasi ketersediaan mampu menyadari bahwa sesuai dengan tingkat kebutuhan lalu lintas dan transportasi yang teratur, compertable, cepat, halus dan teratur dengan biaya yang terjangkau masyarakat. Perusahaan transportasi umum (angkutan baik orang atau barang) dalam operasi yang diperlukan untuk memiliki lisensi untuk transportasi. Adanya perizinan kegiatan usaha (perusahaan) transportasi umum selesai, pemerintah dapat melakukan pengawsan versus perusahaan sehingga tujuan peneribatan UULLAJ dicapai seperti yang diharapkan, bahwa hak-hak konsumen sebagai pengguna services angkutan umum juga akan dilindungi dan mendapat perlindungan hukum. Perlunya perlindungan hokum bagi konsumen sebagai pengguna jasa transportasi, disamping ke konsumen sebagai pihak yang lemah, juga merupakan salah satu prinsip hokum Negara.Kata kunci: izin usaha angkutan, angkutan barang umum, pengguna angkutan barang umum.
KELOMPOK SOSIAL DAN PENERAPANNYA DALAM PEMBANGUNAN
Authors: Minin Darwinsyah
Published: February 2021

Perwujudan undang-undang sebagai salah satu sumber hokum, tidak hanya terdapat peran dan anggota partai politik yang berkuasa atau yang duduk di legislative saja. Namun ini semua melalui prosesÂ  yang panjang dan membutuhkan control dari masyarakat yang tergabung dalam kelompok social. Oleh karena itu, dikaji tentang arti pembangunan hokum dan peranan kelompok social dalam pembangunan hokum. Metode yang digunakan adalah content analysis (analisis isi) dari referensi yang relevan dengan masalah yang dibahas. Arti pembangunan hokum dalam masyarakat adalah masyarakat harus aktif memecahkan masaah hidup dan memiliki sikap terbuka bagi pikiran-pikiran dan usaha baru. Kemudian dalam taraf pelaksanaan, maka ilmu-ilmu social (sosiologi) berguna untuk mengadakan identifikasi terhdap kekuasaan social dalam masyarakat serta mengamati proses perubahan social yang terjadi. Peranan kelompok social dalam pembangunan hokum adalah kelompok social yang telah berkembang sejak lama dan dapat mencapai suatu kemantapan dalam jiwa bagian terbesar warga masyarakat, dapat membentuk pedoman atau pendorong bagi tata kelakuan masyarakat lainnya. Nilai-nilai social yang abstrak yang terbentuk mendapat bentuk yang konkret di dalam kaedah-kaedah transaksi kelompok social yang merupakan bagian dari kebudayaan masyarakat yang bersangkutan.Â Kata kunci : kelompok social, pembangunan hokumÂ
ITIKAD BAIK DALAM BERKONTRAK
Authors: Tanjung Aminah
Published: February 2021

Kebebasan berkontrak didasari idiologi individualismeKebebasan berkontrak, hingga kini tetap menjadi asas penting dalam sistem hukum kontrak baik dalam sistem civil law, common law, maupun system hukum lainnya. Asas kebebasan berkontrak dalam sistem hukum sipil dan common law lahir dan berkembang seiring dengan pertumbuhan aliran filsafat yang menekan semangat individualisme dan pasar bebas. Pada abad 19 kebebasan berkontrak sangat diagungkan baik para filosup ekonomi mendominasi teori hukum kontrak. Inti permasalah hukum kontrak lebih tertuju kepada realisasi kebebasan berkontrak daripada nilai-nilai keadilan dalam putusan-putusannya peraturan melalui legilasi pun memiliki kecenderungan yang sama. Pada saat itu, kebebasan berkontrak memiliki kecenderungan ke arah kebebasan tanpa batas (Understriced Freedom of Contract). Pada masa itu kebebasan berkontrak menjadi paradigma baru dalam hukum kontrak.Keberadaan asas kebebasan berkontrak tersebut tidak dapat di lepas dari pengaruh berbagai aliran filsafat politik dan ekonomi berkembang pada abad ke 19. Dalam bidang ekonomi aliran laissez faire yang dipelopori Adam Smith yang menekan prinsip non interpensi oleh pemerintah terhadap kegiatan ekonomi bekerjanya pasar.Â Kata Kunci : Iktikad Baik Dalam Kebebasan Berkontrak
KEDUDUKAN HUKUM ADAT ACEH DALAM SISTEM HUKUM NASIONAL
Authors: Safrijal Airi
Published: February 2021

Negara Indonesia adalah negara hukum. Penegasan negara Indonesia sebagai hukumini sangat jelas dicantumkan dalam Undang-Undang Dasar 1945. Pasal 1 ayat (3) UUD1945 menyebutkan bahwa: â€œNegara Indonesia adalah negara hukumâ€, dengan landasanpandangan hidup berdasarkan Pancasila sebagai Falsafah Negara dan bangsa. UUD 1945dengan tegas mengakui keberadan masyarakat hukum adat beserta hak-hak tradisionalnyasebagaimana disebutkan pada Pasal 18B (2) UUD 1945 yang berbunyi: â€œNegaramengakui dan menghormati kesatuan-kesatuan masyarakat hukum adat beserta hakhaktradisionalnya sepanjang masih hidup dan sesuai dengan perkembangan masyarakat danprinsip Negara Kesatuan Republik Indonesia, yang diatur dalam undang-undangâ€. Hukumadat adalah hokum tidak tertulis, dia hidup, tumbuh dan berkembang dalam setiap kelompok masyarakat sebagai aturan hidup masyarakat yang dipelihara dan ditaati setiap kelompok masyarakat. Kedudukan hokum adat dalam masyarakat adat Aceh sangat jelas terlihat sampaisaat ini, dimana eksistensi hukum adat selalu dipertahankan oleh masyarakatnya.Kata Kunci: Kedudukan Hukum Adat, Dalam Sistem Hukum Nasional, dan di Aceh.
Improvement of atomic-emission analysis with inductively connected plasma for studying the composition of mineral samples.
Authors:   Apatity Branch of Murmansk State Technical University, Bordiyan D. N. , Elizarova I. R. ,   Center for Collective Use, Institute of North Ecological Problems of FRC “Kola Science Centre RAS”, Zaytsev V. F. ,   Center for Collective Use, Institute of North Ecological Problems of FRC “Kola Science Centre RAS”, Malisheva M. B. ,   Center for Collective Use, Institute of North Ecological Problems of FRC “Kola Science Centre RAS”
Published: February 2021

The paper considers аsoftware method (WinLab32,Optima 2100DV)emission spectrometer for increasing the intensity of the analytical signal when the gas flow rate of the atomizer in the spray chamber changes. The determination of the optimal atomizer gas flow value was carried out as a result of mathematical and empirical approximations for each wavelength of the selected analytes.
Composition of outer sphere cations and the charge transfer kinetics of the Ti (IV)/Ti (III) redox couple in the KCl—KF melt.
Authors:   Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of FRC “Kola Science Centre RAS”, Vetrova D.A. , Kuznetsov S.A. ,   Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of FRC “Kola Science Centre RAS”
Published: February 2021

The charge transfer kinetics for the redox couple Ti(IV)/Ti(III) in the KCl —KF (10 wt. %) —K2TiF6was studied by cyclic voltammetry method. The influence of strongly polarizing Mg2+, Ca2+, Sr2+and Ba2+cations on the kinetics of charge transfer for the Ti(IV)/Ti(III) redox couple upon their introduction into the initial melt, was studied. The activation energies of the charge transfer process for the initial melt and for the melt with the addition of alkaline earth metal cations were calculated.
Determination of OH-groups concentration, and point defects in lithium niobate crystals.
Authors:   Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of FRC “Kola Science Centre RAS”, Gabain А. A.
Published: February 2021

The analysis of structural particularities of nominally pure and doped LiNbO3single crystals was performed by methods of Raman light scattering and infrared absorption. The concentration of OH groups, as well as the concentration of point defects is calculated from IR absorption spectra in the region of stretching vibrations of OH groups. A correlation has been determined in behavior of IR absorption spectra bands of strongly doped LiNbO3:Zn crystals with the behavior of the Raman spectra band that correspondsto stretching bridge vibrations of oxygen atoms in octahedra along the polar axis.
Influence of modification of hydroxyapatites by various cations on its phase composition.
Authors:   Tomsk State University, Gigilev A. S.
Published: February 2021

The paper describes the synthesis of hydroxyapatite using doubly charged cations Mg2+, Sr2+, Zn2+as modifying additives. The results of X-ray phase analysis of the obtained samples are presented.
Synergism of non-ionic and anionic surfactants in a binary solution.
Authors:   Apatity Branch of Murmansk State Technical University, Genevskaya A. S. , Mitrofanova G. V. ,   Apatity Branch of Murmansk State Technical University,   Mining Institute of FRC“Kola Science Centre RAS”
Published: February 2021

Adsorption at the gas —air interface and micelle formation in binary solutions of ethoxylated alkyl phenol (Neonol AF 9-10) and sodium oleate have been studied. The Rubin and Rosen equations were used to determine the interaction parameters and the composition of mixed micelles and adsorption layers depending on the initial solution composition. The authors have found out that the micelles and the adsorption layer at the interface are enriched in a non-ionic component. The maximum synergistic effect during micelle formation was found for solutions containing 20–30 % molar of reagent Neonol AF 9-10, and during adsorption —20 and 50 %.
Obtaining and properties of functionalized graphene oxide.
Authors:   Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Ioni Y. V. , Gubin S. P. ,   Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
Published: February 2021

The study is devoted to the possibility of surface modifying of graphene oxide with organic functional groups and/or metal nanoparticles. The presence of many oxygen-containing groups makes it possible to conduct surface methylation as well as allows them to be the centers of crystallization for metal clusters and nanoparticles. The obtained substances are characterized by different physicochemical analysis methods such as elemental analysis, x-ray diffractive analysis, IR spectroscopy and electron microscopy.
Analysis of doping influence on structural defects in LiNbO3.
Authors:   Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of FRC “Kola Science Centre RAS”, Palatnikov M. N. , Kadetova A. V. ,   Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of FRC “Kola Science Centre RAS”, Aleshina L. A. ,   Petrozavodsk State University, Sidorova O. V. ,   Petrozavodsk State University
Published: February 2021

Changes in a structural state of homogeneous doped lithium niobate crystals with magnesium in the region of 5 mol. % were studied by X-ray diffraction methods. It was found that the changes in the structure of LiNbO3: Mg occured not only in the region of the impurity defect, but also in the region of the main motive of the structure. Bond lengths in the octahedra of the main motive and the Nb–Li distance along the polar axis of the crystal changed. The magnesium introduced into the vacant lithium octahedron distorted the shape of the octahedron more strongly than niobium.
Anisotropic membranes based on porous anodic alumina films.
Authors:   Petrozavodsk State University, Kokatev A.N. , Vasiliev S.G. ,   Petrozavodsk State University, Yakovleva N.М. ,   Petrozavodsk State University, Stepanova К.V. ,   Petrozavodsk State University
Published: February 2021

In the present study, we report the development of a new type of anodic aluminium oxide membranes. Nanoporous alumina films have been fabricated by galvanostatic two-step anodizing technique. For the 1stgroup of samples at both stages was used water solution of oxalic acid as an electrolyte; and for the 2ndgroup at the 2ndstage was used a special multicomponent electrolyte. Using atomic force microscopy, it was found that a method of barrier layer thinning “from above” in combination with chemical removal of metal enables permeable anisotropic alumina membranes fabrication.
Features of gallium sorption on mechanoactivated titanium dioxide.
Authors:   Institute of Metallurgy Ural Branch of the RAS, Pechishcheva N. V. , Korobitsyna A. D. ,   Institute of Metallurgy Ural Branch of the RAS, Melchakova O. V. ,   Institute of Metallurgy Ural Branch of the RAS
Published: February 2021

The features of sorption of gallium from aqueous solutions on mechanically activated TiO2(rutile) were studied. The dependence of the degree of sorption on the time of mechanical activation is obtained. The experimental sorption isotherms at temperatures from 20 to 50 ºСwere processed by adsorption models of Langmuir, Freindlich, Dubinin —Radushkevich. To achieve sorption equilibrium depending on temperature, 10–30 minutes are required. Dependence of sorption on time is better described by the kinetic model of the pseudo-second order. According to the Arrhenius equation, the activation energy is calculated —9,7 kJ / mol.
Костные цементы на основе системы фосфат кальция—фосфат магния с добавлением катионов серебра и цинка.
Authors:   Baikov Institute of Metallurgy and Materials Science Russian Academy of Sciences, Krokhicheva P. A. , Goldberg M. A. ,   Baikov Institute of Metallurgy and Materials Science Russian Academy of Sciences, Baikin A. S. ,   Baikov Institute of Metallurgy and Materials Science Russian Academy of Sciences, Khayrutdinova D. R. ,   Baikov Institute of Metallurgy and Materials Science Russian Academy of Sciences
Published: February 2021

The main highlights in this paper are about investigation of cation-dopped cements based on the calcium phosphate —magnesium phosphate system with a ratio of (Ca + Mg) / P = 2 containing 40 mol. % Mg for application in the reconstructive surgery. The powders were synthesized by the method of deposition from a salt solution, the powders were certified using the X-ray phaseanalysis (XRD), the main phases were the magnesium-substituted vitlokite phase (Ca2,589Mg0,411PO4), magnesium oxide MgO, and stanfeldite (Mg3Ca3(PO4)4. The setting time of cement samples with mixing phosphate fluid is 6–9 min; the high mechanical properties are exhibited by the samples with a content of 0,5 mass % Zn (26,5 ± 1,3 MPa).
The use of technogenic raw materials in the production of porous material.
Authors:   Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of FRC “Kola Science Centre RAS”, Manakova N. K. , Seneta A. A. ,   Apatity Branch of Murmansk State Technical University
Published: February 2021

The article discusses the possibility of using industrial waste and mineral raw materials in the Murmansk region to create new heat-insulating materials that contribute to energy saving in the Far North. Optimal conditions were established and compositions were determined for the production of foam silicates based on silica-containing waste.
The problem of extraction of rare-earth metals from sulfuric acid media: possibilities of hydrazides of neocarboxylic acids.
Authors:   Institute of Technical Chemistry Ural Branch of the RAS, Nikitina V. A. , Radushev A. V. ,   Institute of Technical Chemistry Ural Branch of the RAS, Batueva T. D. ,   Institute of Technical Chemistry Ural Branch of the RAS
Published: February 2021

Optimal conditions and selectivity of extraction of a mixture of nine REM3+ions with 0,5 mol / L solution of neocarboxylic acid hydrazides of the C15–C19fraction from sulfuric acid media and the ratio of the phases Vо: Vwwere determined. The capacity of the organic phase relative to individual REM3+from media containing 0,3 mol / L H2SO4was determined.
Sintering and properties of ZrO2—Al2O3 ceramic material, containing sintering additives.
Authors:   Baikov Institute of Metallurgy and Materials Science Russian Academy of Sciences, Obolkina T. O. , Goldberg M. A. ,   Baikov Institute of Metallurgy and Materials Science Russian Academy of Sciences, Smirnov S. V. ,   Baikov Institute of Metallurgy and Materials Science Russian Academy of Sciences, Antonova O. A. ,   Baikov Institute of Metallurgy and Materials Science Russian Academy of Sciences
Published: February 2021

We studied the effect of complex additives containing Na2Si2O5and Co, Fe oxides on the properties and sintering temperature of a ceramic material zirconium dioxide (ZrO2) with an aluminum oxide (Al2O3) content of 10 wt %. It was shown that the introduction of complex additives contributed to the intensification process and a significant increase in the strength and microhardness of the sintered ZrO2—10 % Al2O3. The greatest strength (362 ± 25 МPa) was achieved by sintering at 1250 ° C on the composition of ZrO2—10 % Al2O3—5 % Na2Si2O5+ 0,33 % Fe.
Cu, Zn-containing compounds preparation for obtain metal-organic frameworks based on synthetic analogue of lintisite.
Authors:   Apatity Branch of Murmansk State Technical University, Ramzaytseva V. V. , Kalashnikova G. O. ,   Nanomaterials Research Centre of FRC“Kola Science Centre RAS”, Samburov G. O. ,   Laboratory of Nature-Inspired Technologies and Environmental Safety of the Arctic Federal Research Centre “Kola Science Centre of the Russian Academy of Sciences”,   Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of FRC “Kola Science Centre RAS”
Published: February 2021

The theses present the results about investigation of sorption properties of a synthetic analogue of natural titanosilicate lintisite (AM-4) and its decationized form SL3 in relation to Cu2+and Zn2+cations from aqueous solutions of their salts. This experimental work is a search work, carried out to assess the possibility of obtaining Cu, Zn-containing AM-4 and is necessary for further research work in the field of catalysis.
Photoluminescence features of LiNbO3:Zn (0,04÷2,01 mol. %) crystals.
Authors:   Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of FRC “Kola Science Centre RAS”, Smirnov M. V. , Sidorov N. V. ,   Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of FRC “Kola Science Centre RAS”, Palatnikov M. N. ,   Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of FRC “Kola Science Centre RAS”, Pikulev V. B. ,   Petrozavodsck State University
Published: February 2021

The main contribution to the luminescence of LiNbO3 : Zn (0,04 ÷ 2,01 mol. %) at 420 and 440 nm was established to be due to two electro-hole pairs of Nb4+–O-in niobium octahedron. Moreover, the luminescence weakly depends on Li / Nb ratio and Zn concentration. The increase of Zn concentration to 2,01 mol. % ZnO leads to monotonically increasing intensity in long-wave region of the photoluminescent spectra. This fact indicates that there are shallow energy levels near bottom of the conductivity band. Also the features of hydrogen bonds in LiNbO3structure effects on the location of the shallow energy levels as the complex defects caused by OH-group in the structure can contribute to the photoluminescence.
Photoluminescence and features of the defective structure of nominally pure lithium niobate single crystals.
Authors:   Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of FRC “Kola Science Centre RAS”, Smirnov M. V. , Sidorov N. V. ,   Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of FRC “Kola Science Centre RAS”, Teplyakova N. A. ,   Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of FRC “Kola Science Centre RAS”, Pikulev V. B. ,   Petrozavodsck State University
Published: February 2021

The photoluminescence intensity in lithium niobate crystals close to the stoichiometric composition being lower than in a congruent crystal was established. The increase of Li / Nb ratio leads to shifting the photoluminescence bands to the short-wavelength region of the spectrum and changing the fundamental absorption edge of the crystals under study. It was shown that, in addition to point defects in the cationic sublattice, complex defects due to the presence of OH groups and compensation defects (VLi / VNb) in the structure can also contribute to photoluminescence.
Extraction of iron (III) from highly concentrated nickel and cobalt solutions..
Authors:   Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of FRC “Kola Science Centre RAS”, Sokolov A. Yu. , Kasikov A. G. ,   Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of FRC “Kola Science Centre RAS”
Published: February 2021

The extraction of iron (III) from highly concentrated chloride nickel and cobalt solutions has been studied. It has been established that tributyl phosphate is the most preferred extractant for the deep extraction of iron (III) from highly concentrated nickel solution. A mixture of aliphatic ketones and alcohols is effective for cleaning cobalt solution.
Сrystalline microcone coatings on titanium sponge.
Authors:   Petrozavodsk State University, Stepanova K. V. , Shulga A. M. ,   Petrozavodsk State University, Yakovleva N. M. ,   Petrozavodsk State University, Kokatev A. N. ,   Petrozavodsk State University
Published: February 2021

For the first time it was shown how to obtain microcone-shaped TiO2structures by means of anodizing of porous powder materials made of titanium sponge. It was established that during anodizing in 10 %Н2SO4+ 0,15 % HF electrolyte along with the growth of the X-ray amorphous nanoporous TiO2film a set of microcones with anatase crystalline structure is formed on the surface of titanium sponge powder particles. Microcones (height is up to 7m, base diameter is up to 5m) consist of multilayer nanoscale structures. Such structures are promising for the manufacture of new nanomaterials for catalytic and sensor devices.
Effect of titanosilicate additives on the strength of a self-cleaning cement stone.
Authors:   Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of FRC “Kola Science Centre RAS”, Tsyryatieva A. V.
Published: February 2021

The possibility of modifying cement composite by titanosilicate additive, consisting of the mixture of silicon and titanium oxides (TSP —titanosilicate precipitate), obtained by coprecipitation during the interaction of titanite with hydrochloric acid was studied. The properties of the modified TSP cement composite and mechanically prepared mixtures of titanium dioxide (anatase) with silica and titanium dioxide (rutile) with silica are compared. It has been shown that titanosilicate additives in cement compositions increase the compressive strength and give the surface self-cleaning properties.
Application features of inductively coupled plasma atomic emission spectrometry method for elemental analysis of suspended particles of atmospheric air in the city.
Authors:   Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of FRC “Kola Science Centre RAS”, Shirokaya A. A. , Novikov A. I. ,   Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of FRC “Kola Science Centre RAS”, Drogobuzhskaya S. V. ,   Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of FRC “Kola Science Centre RAS”, Gaponenkov I. A. ,   Murmansk State Technical University
Published: February 2021

The paper presents the parameters of elemental analysis by inductively coupled plasma atomic emission spectrometry (ICP-AES) of suspended atmospheric air particles in the city, collected on PTFE filters by the automatic dust sampling system (aspirator) Derenda PNS8TDM-6.1. The optimal wavelengths were selected for the quantitative determination of the contents of Co, Cu, Fe, Mn, Ni, Pb, and Zn, the detection limits were calculated and the parameters were calculated for automatically taking into account the spectral effects.
Revisiting the life of things: A cognitive semiotic study of the agency of artefacts in Amazonia
Authors: Mendoza-Collazos Juan Carlos , Sonesson Göran
Published: February 2021

Many contemporary scholars have recently defended the idea that the agency of things is symmetrical and equivalent to human agency. We propose an alternative approach to artefacts’ agency based on a field study concerned with contextually situated observations of the process of design of artefacts in Amazonia. By means of participant observation and interviews, we address the role of artefacts in relation to human agency. In so doing, we focus on the human-unique capacity for design as it is related to cognitive resources such as intentionality, decision-making, planning, and volitional adaptations of the material world to human purposes. We argue that such cognitive resources are ultimate manifestations of human agency. The findings allow us to conclude that artefacts possess a special form of agency, which operates in different ways from the agency of true agents. This agency is derived: it depends on the actions of true agents, with either function as remote intentions or are required for the artefact to work at the moment of use. Thus, the relation between artefacts and agents is asymmetrical. Given that the derived agency of artefacts allows people to expand their own agency, we propose the notion of enhanced agency for the prosthetic incorporation of artefacts into the agentive capabilities of human agents.
Performance Improvement of a Forced Draught Cooling Tower Using a Vortex Generator
Authors: Dan Mugisidi  , Oktarina Heriyani  , Pancatatva Hesti Gunawan  , Dwi Apriani
Published: February 2021

Cooling systems using colling towers are often an important element in a production process and always involve water or energy consumption. Therefore, increasing the efficiency of the colling tower will reduce water and / or energy consumption. In order to increase the efficiency of colling tower energy consumption, the most studied part is the fills, where heat transfer occurs. However, there are no studies on the use of vortex generators in colling tower fills. Hence the aim of this study was to evaluate the performance improvement in a forced draught cooling tower using a vortex generator. It was conducted on a laboratory scale using single fill as a trial medium. The fill was made of 3-mm acrylic with dimensions of 30 × 30 × 1950 mm. A three-unit vortex generator was placed inside the fill. The rectangular vortex generator was made of 0.5-mm thick aluminium and had a size of 50 × 10 mm. Data were retrieved for the fills with and without a vortex generator. Water and air discharge of 1 L/minute and an inlet water temperature of 60°C were maintained. The results indicated that the effectiveness of the fill with a vortex generator was increased by 90.72% compared to the fill without a vortex generator.
UPAYA PERLINDUNGAN SATWA LIAR INDONESIA MELALUI INSTRUMEN HUKUM DAN PERUNDANG-UNDANGAN
Authors: Hanif Fathi
Published: February 2021

Abstrak Saat ini perlindungan jenis satwa atau hidupan liar diatur dalam instrumen hukum internasional seperti Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) tahun 1973. Undang-undang No.5 tahun 1990 tentang Konservasi Sumberdaya Alam Hayati dan Ekosistemnya danperaturan pelaksanaan lainnya mengatur perlindungan jenis satwa atau hidupan liar di Indonesia. Hingga saat ini masih banyak kasus kejahatan yang berkaitan dengan perburuan dan perdagangan satwa atau hidupan liar yang dilindungi, seperti kasus penyelundupan kakatua jambul kuning di Surabaya pada medio Maret 2015. Implementasi perundang-undangan bidang ini belum efektif dari sisi perlindungan satwa di habitatnya maupun menjerat maksimal pelaku kejahatan. Tulisan ini menyimpulkan bahwa instrumen hukum nasional yang melindungi satwa dan tumbuhan liar belum memiliki kelengkapan ketentuan yang mengacu pada CITES sepenuhnya, dan ancaman sanksi yang ada juga tidak menimbulkan efek jera pelaku kejahatan. Dibutuhkan revisi perundang-undangan dibidang konservasi, perlindungan satwa atau hidupan liar yang sejalan dengan perkembangan instrumen hukum internasional. Abstract The protection of wildlife stated in the international law instruments such as Convention on International Trade in as Critically Endangered Species of Wild Fauna and Flora (CITES) in 1973. Law No. 5 of1990 regardingNatural Resources Conservation and ItsEcosystems and related goverment regulations governprotection of wildlife in Indonesia. Recently, there are still many criminal cases related to poaching and trade of wildlife or protected animals, such as yellow-crested cockatoo smuggling cases in Surabaya on March 2015. Implementation of regulation and the law enforcement concerning wildlife is not effective to protect animals in their habitat. The legal instrument in the national leveltoprotect wildlife isnot complete and comprehensive yet,especially compared with the norms ofCITES and its regulations;andthe punishment did not make the deterrent effect to the perpetrators. There is aneed to push the goverment to make a revision the regulation regarding conservation and wildlife protection that are in line with the international law instruments.
Exploring Students Cultural Experiences in an International Learning Project Using Digital Reality – Talktech
Authors: Andone Diana , Frydenberg Mark
Published: February 2021

The TalkTech 2018 project presents a learning scenario where students interact as members of international teams to create and exchange VR scenes that share aspects of local culture and landmarks. Most students agree that their participation in the TalkTech project taught them about culture, collaboration, working on international teams, and the tools to carry out these tasks. They saw the promise of digital reality technologies in education and in business. Students also learned that creating, sharing, and exploring VR scenes can change how they experience virtual worlds, as well as how they apply their knowledge gained in those virtual worlds, to the real world. By creating, sharing, and experiencing immersive VR scenes, results suggest that student’s use of VR has a favourable impact on their understanding and appreciation of the culture of their international partners.