bluuebunny/crossref_metadata_2025 huggingface dataset:
ANALISIS PORTOFOLIO OPTIMAL PADA SAHAM LQ 45 PERIODE (2017-2018)
Authors: Iryani Iryani
Published: February 2020

Investor melakukan investasi untuk memperoleh keuntungan maksimal tanpa mengabaikan risiko yang harus dihadapi. Untuk menurunkan risiko investasi, dapat dilakukan dengan pembentukan portofolio pada berbagai jenis aktiva. Tujuan penelitian ini untuk menentukan saham-saham yang membentuk portofolio optimal dari saham-saham perusahaan yang tergabung dalam indeks LQ-45 di Bursa Efek Indonesia periode 2017-2018. Jumlah sampel sebanyak 11 perusahaan dengan menggunakan teknik purposive sampling. Pengumpulan data dilakukan melalui studi dokumentasi. Teknik analisis yang digunakan dalam penelitian ini untuk penentuan portofolio optimal menggunakan model indeks tunggal. Hasil penelitian menunjukkan saham perusahaan yang membentuk portofolio hanya lima dari sebelas sampel perusahaan yaitu GGRM (7%), ICBP (14%), BBNI 10%), BBCA (47%) dan INKP (22%). Return portofolio yaitu 4,371% dan risiko portofolio 1,544%.
PENGARUH PENERAPAN STRATEGI KAIZEN TERHADAP TINGKAT KEPUASAN TAMU PADA HOTEL BUDGET DI KOTA MAKASSAR
Authors: Chaerunnissa Dian Puspita
Published: February 2020

Penelitian ini bertujuan untuk mengetahui apakah strategi kaizen berpengaruh terhadap tingkat kepuasan tamu pada Hotel Budget di Kota Makassar. Pengumpulan data menggunakan data primer dan data sekunder yang diperoleh dari kuesioner dan. Sampel yang diambil berjumlah 30 responden.  Penelitian ini menggunakan metode analisis kualitatif, analisis kuantitatif, dan linier berganda dari tamu hotel Ibis Budget Makassar Airport. Hasil yang didapatkan menunjukkan secara parsial bahwa variabel seiri, seiton, seiso, seiketsu dan shitsuke berpengaruh signifikan terhadap kepuasan tamu. Secara simultan variabel seiri, seiton, seiso, seiketsu dan shitsuke berpengaruh signifikan terhadap kepuasan tamu. Diantara kelima variabel tersebut, terdapat satu variabel yang paling dominan berpengaruh terhadap kepuasan tamu yaitu variable seiso. Hasil penelitian menunjukkan bahwa hipotesis yang diajukan diterima karena menunjukkan hasil uji hipotesis yang positif dan signifikan. Ini berarti bahwa strategi kaizen berpengaruh positif dan signifikan terhadap tingkat kepuasan tamu pada Hotel Budget di Kota Makassar.
PROFIT AND LOSS SHARING, RUGI DITANGGUNG SIAPA
Authors: Burhanuddin Chairul Ihsan , Abdullah Muhammad Wahyuddin
Published: February 2020

Profit and Loss Sharing merupakan salah satu isu yang menjadi perdebatan dalam perusahaan ataupun organisasi nirlaba. Pemerintahan, swasta, dan khususnya di perbankan syariah. Dalam jurnal ini akan khusus membahas terkait rekonstruksi bagi hasil dalam membangun kemashlahatan baik dari pihak bank dan pihak nasabah yang akan berakad dengan bank. Serta adanya asimetri informasi kepada pihak nasabah dalam proses pemberian pinjaman/kredit yang seharusnya nasabah memiliki hak penuh atas informasi yang seluas-luasnya dalam proses kredit/pemberian pinjaman dari pihak bank. Bagi hasil tidak hanya membagi keuntungan tapi juga membagi kesulitan atau kerugian. Hal ini tak lepas dari setiap risiko yang ada dalam bisnis ataupun usaha yang dijalankan
PERJANJIAN INTERNASIONAL SEBAGAI INSTRUMEN REKAYASA GLOBAL DAN HARMONISASI PRINSIP-PRINSIP HUKUM LINGKUNGAN
Authors: Simbolon Manuel
Published: February 2020

Perjanjian internasional merupakan salah satu sumber hukum internasional yang sering digunakan. Dalam bidang lingkungan hidup, terdapat banyak perjanjian internasional yang telah dibuat untuk mengkoordinasikan kebijakan negara-negara di bidang lingkungan hidup. Perjanjian internasional tersebut digunakan sebagai instrumen rekayasa global. Namun banyak di antara perjanjian internasional tersebut berkarakter soft law sehingga tidak dapat mengikat negara-negara dan mempengaruhi kebijakan nasionalnya di bidang lingkungan hidup.
PENEGAKAN HUKUM TERHADAP PEGAWAI NEGERI SIPIL YANG TIDAK DISIPLIN
Authors: Boediningsih Widyawati , Winarto Winarto
Published: February 2020

Penyelenggaraan negara dijalankan oleh pengurus negara yang mempunyai jabatan dalam menjalankan roda pemerintahan. Pegawai Negeri Sipil (PNS) sebagai abdi negara berkewajiban besar untuk mengemban tugas tersebut. Namun pada dasarnya banyak PNS tidak dapat dengan baik melaksanakan tugasnya sehingga pelaksanaan pembangunan tidak berjalan dengan baik. Banyak terjadi pelanggaran disiplin seperti tidak masuk kerja tanpa alasan yang jelas, menghabiskan waktu di tempat-tempat perbelanjaan. Oleh karena itu tulisan ini mengkaji pelaksanaan Peraturan Pemerintah Nomor 53 Tahun 2010 kaitannya dengan disiplin PNS dan hambatan-hambatan yang timbul dalam menerapkan kedisiplinan PNS. Kendala dalam penerapan disiplin PNS adalah kurangnya pengawasan yang dilakukan oleh pejabat yang berwenang, serta kurangnya rasa tanggung jawab terhadap pekerjaan yang telah diamanatkan. Upaya yang dapat dilakukan adalah memperbanyak pengawasan dan perlunya ketegasan para pejabat dalam memberikan sanksi.
MENDUDUKKAN LINGKUP PEMANTAUAN DAN EVALUASI PERATURAN DAERAH OLEH DEWAN PERWAKILAN DAERAH
Authors: Rahmawan Triya Indra
Published: February 2020

Melalui pemberlakuan Undang-Undang Nomor 2 Tahun 2018, Dewan Perwakilan Daerah (DPD) diberikan wewenang dan tugas baru untuk melakukan pemantauan dan evaluasi atas rancangan peraturan daerah dan peraturan daerah. Hadirnya wewenang dan tugas baru ini pun memberikan tantangan tersendiri bagi DPD. Jika DPD tidak tepat dalam merumuskan lingkup tersebut, maka kekhawatiran terjadinya tumpang tindih wewenang dan tugas dengan Pemerintah Pusat akan terjadi. Selain itu, DPD juga harus mampu membedakan karakter antara pengawasan Perda yang dilakukan oleh lembaga legislatif dan lembaga eksekutif. Untuk menghindari adanya tumpang tindih wewenang, maka pemantauan dan evaluasi yang dilakukan DPD dapat lebih ditekankan pada upaya merumuskan permasalahan yang dihadapi oleh daerah dalam hal penyusunan rancangan Perda, perumusan materi rancangan Perda dan pelaksanaan Perda. Tindak lanjut atas hasil dari perumusan masalah yang didapatkan oleh DPD diarahkan dalam bentuk rekomendasi kebijakan sebagai pertimbangan terhadap penyusunan materi muatan peraturan perundang-undangan yang mengatur otonomi daerah.
HAK PENGEMUDI BUS PERUSAHAAN ANGKUTAN JALAN PERUM DAMRI SURABAYA TERKAIT JAM KERJA
Authors: Susanto Doel
Published: February 2020

Waktu kerja pengemudi bus sebagaimana yang disyaratkan oleh Pasal 90 ayat (4) Undang-Undang Nomor 22 Tahun 2009 tentang Lalu Lintas dan Angkutan Jalan, tidak sinkron dengan Undang-Undang Nomor 13 tahun 2003 tentang Ketenagakerjaan. Berdasarkan asas lex specialis derogat legi generali, maka status Perum Damri Surabaya sebagai jenis pekerjaan yang bergerak pada sektor usaha atau pekerjaan tertentu dan jenis dan sifat pekerjaan yang dijalankan secara terus menerus. Hal ini berdampak kepada upah yang diperoleh oleh pengemudi bus berupa upah pokok dan upah lembur. Pemerintah belum mengatur secara khusus ketentuan upah lembur pengemudi bus, sehingga oleh Undang-Undang Nomor 13 Tahun 2003 tentang Ketenagakerjaan dan Pasal 12 Keputusan Menteri Tenaga Kerja dan Transmigrasi Republik Indonesia Nomor KEP. 102/MEN/VI/2004 tentang Waktu Kerja Lembur dan Upah Kerja Lembur diserahkan kepada Perum Damri Surabaya untuk mengatur upah lembur. Hal ini berpotensi terjadi pelanggaran-pelanggaran dalam pembayaran upah lembur sehingga dibutuhkan regulasi yang khusus mengatur upah lembur pengemudi bus.
KEDUDUKAN AKTA DI BAWAH TANGAN YANG MEMBATALKAN AKTA NOTARIIL
Authors: Eunice Sharon
Published: February 2020

Artikel ini bertujuan untuk mengetahui kedudukan akta di bawah tangan dan akta notarill. Dalam kasus ini Putusan Nomor 738/Pdt.6/2016/PN.Sby menyatakan batal akta jual beli antara Nyonya Hierawati dan Nyonya Maria Magda. Putusan Pengadilan Negeri tersebut dikuatkan oleh Putusan Pengadilan Tinggi Nomor 83/PDT/2018/PT.SBY. Akta jual beli yang merupakan akta otentik yang memiliki kekuatan pembuktian yang sempurna dan mengikat (Pasal 1867 KUH Perdata), sedangkan Surat pernyataan yang merupakan akta di bawah tangan, kekuatan pembuktiannya hilang apabila disangkal dan dalam putusan ini pihak tergugat tidak membenarkan isi dari surat pernyataan tersebut. Bahwa sesuai dengan yurisprudensi MA RI Nomor 167 K/SIP/1959 menyatakan bahwa jika tanda tangan surat yang merupakan akta di bawah tangan diakui namun isi dari akta dibawah tangan itu disangkal maka nilai kekuatan formil dan pembuktian surut tersebut runtuh dan anjlok. Sehingga akta jual beli tidak dapat dibatalkan oleh surat pernyataan yang merupakan akta di bawah tangan.
PENCABUTAN HAK POLITIK MANTAN TERPIDANA KASUS KORUPSI BERDASARKAN PERSPEKTIF HAK ASASI MANUSIA
Authors: Katarina Celia Santa
Published: February 2020

Penelitian ini menjelaskan tentang pencabutan hak politik terpidana korupsi dalam persepektif hak asasi manusia. Penelitian ini dilatarbelakangi dengan adanya wacana untuk mencabut hak politik terpidana korupsi secara permenen. Wacana tersebut timbul karena banyaknya mantan terpidana korupsi yang mencalonkan diri menjadi wakil rakyat pada pemilu 2019. Selain itu, wacana tersebut muncul karena makin melemahnya kepercayaan rakyat terhadap wakilnya, hal itu dipicu dari tidak terpenuhinya tujuan pemidanaan dan sistem peradilan pidana di Indonesia. Namun wacana pencabutan hak politik secara permenen tersebut bukan berarti tanpa penolakan. Berbagai pihak menyatakan bahwa pencabutan hak politik terhadap terpidana korupsi secara permenen merupakan pelanggaran HAM karenanya tidak boleh dilakukan. Penelitian ini memiliki rumusan masalah antara lain, bagaimana konsep pencabutan hak politik di Indonesia dan bagaimana pencabutan hak politik terhadap terpidana korupsi ditinjau dari hak asasi manusia. Untuk menjawab permasalahan tersebut maka digunakan metode pendekatan perundang-undangan (statute approach) dan pendekatan konsep (conceptual approach). Hasil dari penelitian ini menunjukkan bahwa Indonesia memiliki konsep pencabutan hak poltik sebagai mana diatur dalam Pasal 35 dan 38 KUHP namun kurang kuat untuk memenuhi tujuan pemidanaan karenanya harus dirubah, dan pencabutan hak politik bukanlah merupakan bentuk diskriminasi terhadap hak asasi manusia.
PEMANFAATAN TENAGA OLEH RBA TERHADAP ANM DITINJAU DARI UNDANG-UNDANG NOMOR 21 TAHUN 2007 TENTANG PEMBERANTASAN TINDAK PIDANA PERDAGANGAN ORANG
Authors: Horianto Edwin
Published: February 2020

Masyarakat seringkali memandang perempuan sebagai mahkluk yang lemah lembut, perasa, serta sabar. Pandangan tersebut seringkali ditemukan di dalam kehidupan masyarakat patriakhal yaitu masyarakat yang mempunyai pandangan bahwa laki-laki yang mempunyai kekuasaan absolut. Akibat pandangan dari masyarakat tersebut, perempuan seringkali mendapat perlakuan yang diskriminatif serta perempuan seringkali menjadi objek kekerasan secara fisik, seksual dan psikologis. Salah satu bentuk dari kejahatan perempuan adalah adalah perdagangan orang. Di Indonesia, perdagangan orang telah diatur di dalam Undang-Undang Nomor 21 Tahun 2007 Tentang Pemberantasan Tindak Pidana Perdagangan Orang. Filosofi dari terbentuknya Undang-undang ini di dasarkan bahwa perdagangan orang khususnya perempuan dan anak merupakan tindakan yang bertentangan dengan harkat dan martabat manusia dan melanggar hak asasi manusia, sehingga harus diberantas serta peraturan perundang-undangan yang berkaitan dengan perdagangan orang belum memberikan landasan hukum yang menyeluruh dan terpadu bagi upaya pemberantasan tindak pidana perdagangan orang. RBA sebagai pelaku dalam penelitian telah terbukti memenuhi Pasal 2 Undang-Undang Nomor 21 Tahun 2007, RBA mampu bertanggungjawab karena telah dewasa dan cakap, mempunyai suatu bentuk kesalahan berupa kesengajaan dan dalam perbuatanya tidak memiliki alasan pemaaaf. Harapan dari penelitian ini adalah: terhadap korban perdagangan orang perlu diberikan rehabilitasi serta majelis hakim harus memahami substansi permasalahan yang sedang ditangani agar penjatuhan putusan menjadi efektif.
Interstellar Communication Network. I. Overview and Assumptions
Authors: Hippke Michael
Published: February 2020

It has recently been suggested in this journal by Benford that “Lurkers” in the form of interstellar exploration probes could be present in the solar system. Similarly, extraterrestrial intelligence could send long-lived probes to many other stellar systems to report back science and surveillance. If probes and planets with technological species exist in more than a handful of systems in our Galaxy, it is beneficial to use a coordinated communication scheme. Due to the inverse square law, data rates decrease strongly for direct connections over long distances. The network bandwidth could be increased by orders of magnitude if repeater stations (nodes) are used in an optimized fashion. This introduction to a series of papers makes the assumptions of the communication scheme explicit. Subsequent papers will discuss technical aspects such as transmitters, repeaters, wavelengths, and power levels. The overall purpose is to gain insight into the physical characteristics of an interstellar communication network, allowing us to describe the most likely sizes and locations of nodes and probes.
The Quadruple System HIP 45734
Authors: Tokovinin Andrei
Published: February 2020

HIP 45734 is a quadruple system of 2 + 2 architecture located at 68 pc from the Sun. The outer 9″  system A,B has a period of ∼104 yr. The subsystem Aa,Ab is a visual binary with a period of 20.1 yr and an eccentricity of 0.78. Its periastron in 2019.1 was observed spectroscopically, yielding masses (1.10 ± 0.04 and 0.98 ± 0.03

) and orbital parallax, 14.90 ± 0.37 mas. The masses, luminosities, and colors approximately agree with evolutionary models of main-sequence stars. Component Aa has a detectable lithium line, whereas in Ab it is absent. The pair Ba,Bb is a single-lined spectroscopic binary with a period of 0.55552 day and an orbital inclination of ∼45° derived by modeling the rotationally broadened line profile with flat bottom. The mass of Bb is ∼0.4

. Star B is chromospherically active (an X-ray source); its flux is modulated with the orbital period by starspots, in addition to occasional flares. The system is probably older than ∼600 Myr; it does not belong to any known moving group.
Hi–C 2.1 Observations of Small-scale Miniature-filament-eruption-like Cool Ejections in an Active Region Plage
Authors: Sterling Alphonse C. , Moore Ronald L. , Panesar Navdeep K. , Reardon Kevin P. , Molnar Momchil , Rachmeler Laurel A. , Savage Sabrina L. , Winebarger Amy R.
Published: February 2020

We examine 172 Å ultra-high-resolution images of a solar plage region from the High-Resolution Coronal Imager, version 2.1 (Hi–C 2.1, or Hi–C) rocket flight of 2018 May 29. Over its five minute flight, Hi–C resolved a plethora of small-scale dynamic features that appear near noise level in concurrent Solar Dynamics Observatory (SDO) Atmospheric Imaging Assembly (AIA) 171 Å images. For 10 selected events, comparisons with AIA images at other wavelengths and with Interface Region Imaging Spectrograph (IRIS) images indicate that these features are cool (compared to the corona) ejections. Combining Hi–C 172 Å, AIA 171 Å, IRIS 1400 Å, and Hα, we see that these 10 cool ejections are similar to the Hα “dynamic fibrils” and Ca ii “anemone jets” found in earlier studies. The front of some of our cool ejections are likely heated, showing emission in IRIS 1400 Å. On average, these cool ejections have approximate widths 3.″2 ± 2.″1, (projected) maximum heights and velocities 4.″3 ± 2.″5 and 23 ± 6 km s−1, and lifetimes 6.5 ± 2.4 min. We consider whether these Hi–C features might result from eruptions of sub-minifilaments (smaller than the minifilaments that erupt to produce coronal jets). Comparisons with SDO’s Helioseismic and Magnetic Imager (HMI) magnetograms do not show magnetic mixed-polarity neutral lines at these events’ bases, as would be expected for true scaled-down versions of solar filaments/minifilaments. But the features’ bases are all close to single-polarity strong-flux-edge locations, suggesting possible local opposite-polarity flux unresolved by HMI. Or it may be that our Hi–C ejections instead operate via the shock-wave mechanism that is suggested to drive dynamic fibrils and the so-called type I spicules.
Observations of Extreme ICME Ram Pressure Compressing Mercury’s Dayside Magnetosphere to the Surface
Authors: Winslow Reka M. , Lugaz Noé , Philpott Lydia , Farrugia Charles J. , Johnson Catherine L. , Anderson Brian J. , Paty Carol S. , Schwadron Nathan A. , Asad Manar Al
Published: February 2020

Mercury’s magnetosphere is known to be affected by the enhanced ram pressure and magnetic fields inside interplanetary coronal mass ejections (ICMEs). Here we report detailed observations of an ICME compressing Mercury’s dayside magnetosphere to the surface. A fast CME launched from the Sun on 2013 November 29 impacted first the MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) spacecraft, which was orbiting Mercury, on November 30 and later STEREO-A near 1 au on December 1. Following the ICME impact, MESSENGER remained in the solar wind as the spacecraft traveled inwards and northwards toward Mercury’s surface until it reached and passed its closest approach to the planet (at 371 km altitude) without crossing into the magnetosphere. The magnetospheric crossing finally occurred 1 minute before reaching the planet’s nightside at 400 km altitude and 84°N latitude, indicating the lack of dayside magnetosphere on this orbit. In addition, the peak magnetic field measured by MESSENGER at this time was 40% above the values measured in the orbits just prior to and after the ICME, a consequence of the magnetospheric compression. Using both a proxy method at Mercury and measurements at STEREO-A, we show that the extremely high ram pressure associated with this ICME was more than high enough to collapse Mercury’s weak magnetosphere. As a consequence, the ICME plasma likely interacted with Mercury’s surface, evidenced by enhanced sodium ions in the exosphere. The collapse of Mercury’s dayside magnetosphere has important implications for the habitability of close-in exoplanets around M dwarf stars, as such events may significantly contribute to planetary atmospheric loss in these systems.
Mapeamento sistemático das pesquisas realizadas nos programas de mestrado profissional que versam sobre a aprendizagem matemática na educação infantil
Authors: Motta Marcelo Souza , Basso Stephanie Johansen Longo , Kalinke Marco Aurélio
Published: February 2020

A proposta deste artigo é apresentar um panorama das dissertações, realizadas em programas de mestrado profissional, que versam sobre a aprendizagem matemática na Educação Infantil. A pesquisa é qualitativa e utiliza como procedimento inventariante o mapeamento sistemático, em que a preocupação central é a caracterização dos estudos e não a realização de análise e inferências de qualidade. O cenário da pesquisa foi constituído pelos trabalhos disponibilizados no catálogo de dissertações e teses da Capes, no recorte temporal de 2013 a 2018. A busca inicial ocorreu no mês de julho de 2019, e após a adoção dos critérios de exclusão e inclusão, totalizou-se em 84 trabalhos. Destes, após o processo de parametrização, com o estabelecimento de 11 descritores, restaram-se 12 estudos sobre a temática em tela. Após este processo, realizamos a leitura flutuante dos textos e o fichamento. Em alguns casos os trabalhos foram lidos na íntegra. As pesquisas foram categorizadas em três focos e seis subfocos temáticos. Os resultados apontam a relevância das pesquisas realizadas, pois apresentam contribuições efetivas para a aprendizagem matemática das crianças. Apesar disso, a maior parte dos trabalhos estão centrados na realização de metodologias diversificadas e alguns textos não destacam de forma evidenciada o produto educacional, critério essencial em programas stricto sensu profissional. Por fim, destacamos que a metodologia adotada não é rígida, podendo ser adaptada por outros pesquisadores, permitindo a obtenção diversificada de dados.
O ensino de ciências e a formação continuada de professores alfabetizadores: reconhecendo o campo de pesquisa
Authors: Gonçalves Emerson Nunes da Costa , Compiani Mauricio , Magalhães Júnior Carlo Alberto De Oliveira
Published: February 2020

O ensino de Ciências nos anos iniciais da Educação Básica apresenta campo de pesquisa importante no que tange à alfabetização científica para crianças nesse segmento do ensino. Primeiro, pela curiosidade típica da faixa etária, e, depois, pela necessidade da construção de perfis de cidadãos reflexivos e críticos dos seus contextos vividos. Porém, pelas exigências quanto à apropriação da leitura e da escrita, dentre outros fatores, pouco se dá a devida atenção à construção de conhecimentos sobre ciência, principalmente, nos três primeiros anos do Ensino Fundamental (EF), período de transição entre a Educação Infantil e o EF. Na perspectiva de valorização do ensino de Ciências durante a alfabetização, este trabalho objetivou identificar e analisar pesquisas, teses e dissertações, que discutem a educação continuada de professores alfabetizadores como mediadores do conhecimento científico no Ciclo de Alfabetização. Para o levantamento, foi utilizado o Catálogo de Teses e Dissertações da Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Capes), delimitado o período de 2007 a 2018. Foram recuperados 73 trabalhos, dos quais, 31 tratavam da formação continuada de professores dos anos iniciais, focada no ensino de Ciências, demonstrando aumento do número de pesquisas que apresentam esse interesse. Porém, desse total, foram identificadas apenas 03 dissertações de mestrado que se dedicaram à formação continuada de professores alfabetizadores, indicando a necessidade da realização de pesquisas que possam colaborar com novos direcionamentos da alfabetização científica mediada pelo professor que ensina a ler e escrever.
Ensino de ciências por investigação: contribuições da leitura para a alfabetização científica nos anos iniciais
Authors: Silva Tamiris De Almeida , Souza Silvana Paulina de , Fireman Elton Casado
Published: February 2020

Este texto é um recorte da pesquisa desenvolvida no Mestrado profissional em Ensino de Ciências e Matemática. Ele parte da ideia de um Ensino de Ciências que ofereça aos estudantes a possibilidade de utilização dos seus conhecimentos científicos na compreensão e na interação com o mundo a sua volta. A investigação consistiu no desenvolvimento de uma Sequência de Ensino Investigativa (SEI), intitulada “Como se forma um arco-íris no céu?”, junto a uma turma de 5º ano do Ensino Fundamental da rede municipal de Arapiraca-AL. O objetivo consistiu em analisar as contribuições da leitura de textos do gênero textual lenda para a promoção da Alfabetização Científica em uma turma do 5º ano do Ensino Fundamental, por meio da abordagem didática do ensino por investigação. Para nortear a pesquisa, partiu-se da seguinte problemática: Quais as contribuições da leitura do gênero textual lenda na promoção da Alfabetização Científica de estudantes de uma turma do 5º ano do Ensino Fundamental, por meio do ensino por investigação? Assim, buscou-se na Abordagem Qualitativa os pressupostos metodológicos que consistiu em uma pesquisa de aplicação, utilizando como instrumento de coleta de dados o desenvolvimento da Sequência Didática composta por questões abertas. Os resultados apontam que a leitura de textos, no ensino de Ciências, permitiu a inclusão dos estudantes na cultura científica por meio da aprendizagem de conceitos, ampliação de vocabulário, compreensão da natureza das Ciências e formação de cidadãos críticos e conhecedores de seus direitos e deveres na sociedade.
História da matemática na formação inicial de professores dos anos iniciais: um levantamento de trabalhos no Brasil
Authors: Machado Suélen Rita Andrade , Trivizoli Lucieli M.
Published: February 2020

Neste artigo, a partir de um levantamento bibliográfico, identificamos e construímos um panorama de trabalhos que tratam sobre a História da Matemática na formação inicial do professor dos anos iniciais do Ensino Fundamental, considerando que são os pedagogos os primeiros a ensinar a matemática nos primeiros anos de aprendizagem. Assim, a partir da revisão da literatura e do processo de pré-leitura, leitura seletiva, leitura reflexiva e leitura interpretativa, para análise de fontes secundárias, apresentamos um breve levantamento de teses e dissertações produzidas no Brasil que versam sobre a temática escolhida. Para isto, especificamos palavras-chave e realizamos três buscas no mês de junho de 2019: a primeira no Catálogo de Teses e Dissertações da CAPES e as demais na Biblioteca Digital Brasileira de Teses e Dissertações (BDTD). Infere-se a partir do levantamento que são poucos os trabalhos que abordam o objeto que investigamos, o que indica uma demanda por investigações em História da Matemática direcionadas a formação inicial do professor pedagogo que trabalhará Matemática nos anos iniciais. Verificamos, também, que os trabalhos levantados se aproximam em relação à importância dada a inserção da História da Matemática na formação inicial de professores dos anos iniciais do Ensino Fundamental, destacando aspectos favoráveis de sua utilização com base nos documentos legislativos ou a partir dos resultados encontrados em propostas de formação de pedagogos permeadas pela História da Matemática. Os trabalhos se diversificam nos procedimentos teóricos adotados e nas preocupações assumidas pelos pesquisadores mediante os resultados encontrados. Entretanto, entendemos que a produção destes trabalhos ainda se caracteriza como incipientes passos dados em prol da inserção de aspectos relacionados ao ensino da História da Matemática em cursos de formação inicial para os professores que atuarão nos anos iniciais.
Conhecimento especializado de futuros professores da educação infantil e dos anos iniciais quanto às dificuldades de aprendizagem de alunos cegos e videntes sobre paralelismo
Authors: Couto Silvania , Ribeiro Miguel
Published: February 2020

O presente texto traz a análise das produções resultantes da dinamização de uma tarefa que simulava um ambiente inclusivo, discutindo-se o conhecimento revelado por futuros professores da Educação Infantil e dos Anos Iniciais sobre as dificuldades de aprendizagem de alunos cegos e videntes sobre paralelismo. Esse conhecimento do professor é entendido na perspectiva do Mathematics Teachers’ Specialized Knowledge, que o conceitualiza como especializado e refere-se a ele como um recurso indispensável à prática docente. Os resultados demonstram que o conhecimento dos futuros professores abrange saber que a habilidade da apreensão operatória mereológica é um recurso potencial para a aprendizagem do paralelismo, tanto para alunos cegos quanto para os videntes, e que identificar paralelismo não implica em saber representá-lo.
Ensino de ciências e educação infantil: um estudo pautado na reprodução interpretativa e cultura da infância
Authors: Iglesias Thayse Geane , Silveira Camila
Published: February 2020

O presente estudo tem como objetivo analisar como as crianças interpretam e integram os saberes de Ciências da Natureza, por meio de suas próprias práticas. A pesquisa é de natureza qualitativa do tipo microetnográfica. Para a constituição de dados realizou-se a observação participante, com o registro por meio de notas de campo, em um Centro Municipal de Educação Infantil localizado em Curitiba – Paraná, em uma turma de crianças de 2 a 3 anos. O tratamento dos dados pautou-se na Análise de Conteúdo com estabelecimento de categorias a priori baseadas nos quatro eixos estruturantes da Cultura de Infância, sendo esses: a) Interatividade; b) Ludicidade; c) Fantasia do Real; e d) Interação. Os resultados indicam que na categoria da Ludicidade se concentra o maior número de unidades de significado, seguida pela Interatividade, Reiteração e Fantasia do Real. As crianças por meio do brincar reproduzem atividades dos adultos, como o passo-a-passo de um experimento, e ao mesmo tempo integram suas expectativas, frustações e interpretações. A interação é fundamental para o desenvolvimento do pensamento científico, pois os pares compartilham suas experiências e estabelecem diálogos transformando as conclusões já estabelecidas sobre determinado assunto, em novas perguntas. As crianças transpõem suas dúvidas para a fantasia do real, em busca de respostas, estabelecem conexões e elaboram explicações que consideram satisfatórias a seus questionamentos. Observar a criança em sua ação permite ao docente explorar essas conclusões, instigar a curiosidade e a investigação para que desenvolvam uma visão científica do mundo real.
Morphology lies: a case-in-point with a new non-biting midge species from Oriental China (Diptera, Chironomidae)
Authors: Song Chao , Wang Xinhua , Bu Wenjun , Qi Xin
Published: February 2020

Morphological traits are generally indicative of specific taxa, and particularly function as keys in taxonomy and species delimitation. In this study, a non-biting midge species with anEinfeldia-like superior volsella makes it hard to accurately determined based on its morphological characteristics. Molecular genes of two ribosomal genes and three protein-encoding genes were compiled to construct a related genera phylogeny and to address the taxonomic issues. Phylogenetic inference clearly supports the undetermined species as belonging toKiefferulus. Therefore, a new species classified in the genusKiefferulusis described and figured as an adult male from Oriental China. The species could be easily distinguished from other species in having anEinfeldia-like superior volsella and a triangular tergite IX.
L’art-thérapie à l’hôpital ou comment l’expérience de la créativité ouvre un horizon
Authors: Dupire-Vaujany Ludivine , Viel Odile
Published: February 2020

Occasion nous est donnée de décrire notre expérience si riche pour préciser et défendre une manière particulière de penser l’art-thérapie : non pas une thérapie qui passe par l’art mais bien plutôt une rencontre avec un potentiel créatif qui se diffuse au-delà des patients, aux soignants et aux accompagnants. Cela remet du « jeu » et du mouvement dans les figures figées par la scène hospitalière.
La créativité, un espace et une respiration
Authors: Rosselet François
Published: February 2020

La créativité, c’est cette capacité à percevoir ce qui est là, tapi entre les mots, sous les gestes, dans les interstices du quotidien. C’est la vie qui palpite derrière les apparences, ce sont ces désirs enfouis qui témoignent de la vie. La créativité, c’est permettre à toute cette vitalité de se dire et de se réaliser. Et c’est comme une invitation à sortir des cabines téléphoniques trop étroites dans lesquelles nous nous enfermons, souvent en toute inconscience.
La créativité au service de la vie : le chant adressé
Authors: Chazot Régis
Published: February 2020

Pour approfondir la place de l’art dans la présence auprès d’une personne qui bientôt « s’en ira », je chercherai d’abord à dresser les contours du mystère de celui ou celle près de qui je me tiens. Puis, je m’arrêterai sur l’expérience initiale de « la sonate maternelle ». Enfin, je choisirai spécifiquement la musique et notamment la voix, le chant comme main tendue, comme souffle partagé, comme chant adressé, comme expérience commune d’émotion, comme espace de créativité.
La musicothérapie en soins palliatifs : la vie jusqu’au bout
Authors: Fourage Cécile
Published: February 2020

La créativité fait partie des nombreuses possibilités de ce que permet la musicothérapie en soins palliatifs. Le mouvement qui accompagne toute écoute, toute création, si infime soit-il selon les disponibilités physiques ou psychiques du patient, résulte de cette capacité à mettre en valeur le patient en tant que personne. Dans des circonstances où le plaisir n’est pas le premier sentiment auquel on pense, il est possible d’éprouver cette sensation d’avoir réalisé quelque chose de beau ensemble.
La fabrique des citoyens
Authors: Mahé Camille
Published: February 2020

Cet article interroge la manière dont la démocratie a été instaurée en Italie entre 1943 et 1948, dans un double contexte de sortie de guerre et du fascisme. En analysant le cas de l’école, perçue comme un espace clé pour reconstruire la société italienne, il retrace les étapes de la démocratisation, ses enjeux et ses limites. Comprenant qu’une simple défascisation n’était pas suffisante pour transformer en profondeur la société, les Alliés ont proposé de nouveaux idéaux et de nouvelles pratiques au sein de la salle de classe, tout en composant avec les acteurs puissants de la péninsule, dont le Vatican. Est ainsi né un modèle démocratique original qui a servi de matrice à la jeune Italie républicaine.
Estimation of the charged defect density from hot-electron transport studies in epitaxial ZnO
Authors: Ardaravičius Linas , Kiprijanovič Oleg , Ramonas Mindaugas , Šermukšnis Emilis , Šimukovič Artur , Matulionis Arvydas
Published: February 2020

High-field electron transport measurements by applying short (few ns) voltage pulses on nominally undoped n-type Zn-polar ZnO epilayers are reported and interpreted in terms of the Boltzmann kinetic equation. The transient measurements do not demonstrate a significant change in the electron density up to 320 kV/cm electric field. This result together with the experimental data on the current allows one to estimate the electron drift velocity from the measured current: the highest value of ~2.9 × 107 cm/s is obtained at the pre-breakdown field of 320 kV/cm for the ZnO layer with the electron density of 1.5 × 1017 cm–3. The densities of double-charged oxygen vacancies (~1.6 × 1017 cm–3) and other charged centres (~1.7 × 1017 cm–3) are assumed for the best fit of the simulated and measured hot-electron eﬀect. A correlation with the epilayer growth conditions is demonstrated: the higher Zn cell temperature favours the formation of a higher density of the oxygen vacancies (1.9 × 1017 cm–3 at 347°C).
Réseaux de chauffage à distance, normes légales et structure de marché : quel rôle pour les autorités publiques ?
Authors: Athias Laure , Wicht Pascal
Published: February 2020

Afin de lutter contre le réchauffement climatique, les pays développent des moyens de chauffage plus écologiques, parmi lesquels les réseaux de chauffage à distance, souvent alimentés par des énergies propres. Toutefois, la part de la population desservie par un réseau de chaleur demeure très faible dans de nombreux pays. Alors que les réseaux de chaleur possèdent les caractéristiques techniques d’un monopole naturel, le but de ce papier est d’améliorer la compréhension de leur structure de marché effective, en prenant en compte les contraintes spécifiques liées aux normes légales. Les implications qui en découlent en termes de régulation du marché des réseaux de chauffage à distance en particulier, mais aussi en termes de politiques publiques sur le marché de la chaleur en général, sont ensuite envisagées. Elles soulignent le rôle primordial des autorités publiques.Classification JEL : D42, H23, K23, K32, L12, L51, Q41, Q42, Q48.
De la rhétorique romaine à la pratique chrétienne de l’antijudaïsme : lectures, interprétations et transmission des écrits de Flavius Josèphe
Authors: Goldberg Sylvie Anne
Published: February 2020

En suivant la variété des interprétations du texte du Contre Apion de Flavius Josèphe au cours des siècles, cet article s’attache à décrire la transformation d’une lecture de ce qui était à l’origine une apologie du judaïsme en un texte qui fournit des arguments historiques et théologiques aux Pères de l’Église afin de justifier l’hostilité, l’animosité et la haine que les Juifs ont suscitées depuis la plus lointaine antiquité et d’établir la supériorité du christianisme. L’article examine la manière dont cette utilisation du texte, qui a fait apparaître la figure du Juif « herméneutique/textuel » chère aux approches récentes de l’historiographie, est parvenue à prévaloir.
Amalec, ou l’ennemi héréditaire dans le midrash rabbinique
Authors: Morgenstern Matthias
Published: February 2020

Dans la littérature biblique et rabbinique le nom d’Amalec, petit fils d’Esaü, désigne par métonymie l’ennemi héréditaire d’Israël. Dans le midrash de l’époque des tannaïm, le combat contre Amalec est évoqué pour encourager les Juifs à rester fidèle à la Tora et à lutter contre leurs « ennemis de l´intérieur » (leurs propres péchés). Après la christianisation de l’Empire Romain, l’hostilité entre Israël et Amalec/Esaü (devenu Rome) est mise en scène par des textes midrashiques qui abordent les rapports extrêmement problématiques entre juifs et chrétiens.
Synthesis and Characterization of Phosphorus-Containing Flame Retardant Polyamide 66
Authors: Zheng Yu Lei , Chen Shuang , Wang Jia Hui , Xiao Ru
Published: February 2020

Polyamide 66 (PA66) benefits from excellent mechanical properties and good chemical resistance, which enabled wide application of this material in various industrial fields; however, it suffers from high flammability. Generally, preparation of a flame retardant PA from a reactive flame retardant involves a two-step process. In this study, the flame retardant PA66s (FRPA66s) are synthesized via a one-pot melt copolycondensation route by using a reactive phosphorus-containing flame retardant (FR-B). Then, molecular weight, some mechanical and thermal properties along with flame retardant properties of FRPA66s were investigated by gel permeation chromatography (GPC), instron material testing, differential scanning calorimetry (DSC), thermogravimetry (TG) analysis, vertical burning test (UL 94), and limiting oxygen index test (LOI) techniques. The experimental results confirmed that FRPA66s synthesized by the one-pot method have very similar properties compared to those obtained via the two-step process. Moreover, the prepared materials showed good non-flammability behavior with limiting oxygen index value of over 30% and a vertical burning test result of V-0 rating.
Analysis of Effects of Machining Parameters on Surface Roughness in Electrical Discharge Machining Tablet Shape Punches Using Taguchi Method
Authors: Hong Tran Thi , Hoang Tien Dung , Ky Le Hong , Tam Do Thi , Bui Thanh Hien , Cuong Nguyen Manh , Tung Luu Anh , Pi Vu Ngoc
Published: February 2020

This paper presents a study on analysis of influences of the surface roughness in Electrical Discharge Machining 90CrSi tablet shape punches with the use of copper electrode. In this paper, 9 experimental runs were designed and conducted by using Taguchi method. In addition, 4 process parameters including the gap voltage, the pulse current, the pulse on time and the pulse off time were investigated. The influences of these input parameters on the surface roughness were evaluated by analysing variance. Also, from the experimental results, optimum values of the input parameters for getting the minimum surface roughness were proposed.
Numerical Investigation of the Derivative Cutting Effect of Micro-Textured Tools in Dry Cutting of Ti6Al4V
Authors: Liu Yu , Liu Xin , Li Lei , Tian Yuan
Published: February 2020

In this study, FEM simulation of titanium alloy machining with micro-textured tool using Thirdwave AdvantEdge. Micro-scale textures on the rake face of the cutting tool is a single linear groove parallel to the cutting edge. Viewing simulation results ,derivative cutting did occur under the cutting parameters in this study. The tool-chip contact length decreases due to the existence of the micro-textures. Shear angle increases which indicates smaller deformation of the cutting layer and thus smaller cutting forces and cutting temperature. However, the derivative cutting effect increases the variations of the cutting forces. Therefore, strength of the cutting tool must be taken into consideration during the designation of the micro-textured cutting tool.
Simulation Study of Deep Drawing Process
Authors: Abu Qudeiri Jaber , Ziout Aiman , Alsayyed Muneir , Alzarooni Ammar , Safieh Faris , Al Hatti Ahmed , Al Hassan Amjad
Published: February 2020

Deep drawing process is one of the important processes in sheet metal forming. One of the challenge that faces the deep drawing process is selecting the optimal values of process parameters for the deep drawing process. In order to find the optimum values of these parameters, it is necessary to study their influence on the deformation behaviour of the sheet metal. This paper develops a simulation model for deep drawing process based on Simufact sheet metal forming module to study the effect process parameters on the deep-drawing characteristics. The study also obtained the distribution of strain on the drawn product. Three process parameters are considered in this study namely, punch radius, die radius and clearance, the effect of these process parameter on the required force as well as on the quality of the product are investigated.
Interfacial Behaviors of Transmembrane Peptides in Lipid Bilayer Studied by X-Ray and Neutron Reflectivity
Authors: Choi Dong Jin , Rehman Zeeshan Ur
Published: February 2020

Lipids and proteins can influence each other in so many different ways. Lipids may affect the structure of membrane proteins by influencing their backbone conformation, the tilt, rotation angles of their transmembrane (TM) segments, and the orientation of their side chains. The membrane-spanning parts in integral membrane proteins are predominantly hydrophobic, and most often helical. At the lipid-protein interface, the TM part of the protein and the hydrocarbon chains of the lipid molecules have to coexist to maintain the integrity of the membrane. Lipids are important components of lipid membrane are used in various experiments reported in this thesis and can act as model lipid bilayers. Once they support on solid substrate like silicon wafers, their structural properties can investigate by X-ray and neutron reflectivity and by other useful techniques. Reflectivity technique can provide detailed information such as their thickness and interaction between lipids and peptides. The thesis reports a detailed investigation of these lipids and peptides by X-ray and neutron reflection techniques
Effects of Extraction Conditions on Antioxidant Activities of Roselle (Hibiscus sabdariffa L.) Extracts
Authors: Duy Nguyen Quoc , Pham Tri Nhut , Binh Mai Le Thanh , Thuan Ma , Van Ngo Thi Thanh , Lam Tri Duc , Nguyen Phu Thuong Nhan
Published: February 2020

The objective of this study was to determine the optimal value of factors affecting the extraction of antioxidant activity of Roselle calyces. The investigated factors included extraction temperatures (30, 40, 50, 60, 70 and 80°C), extraction time (30, 60, 90, 120 and 150 minutes) and solid to solvent ratio (1:5, 1:10, 1:20, 1:40 and 1:50 g/mL). The efficiency of extraction was evaluated based on antioxidant activities which were measured by DPPH (2,2-diphenyl-1-picrylhydrazyl) free radical scavenging assay, ferric reducing antioxidant power assay (FRAP). The results showed that when the extraction temperature range of 70–80°C, DPPH free radical scavenging and FRAP were highest with 677.47–725.81 μmolTE/L and 4186.91–4391.62 μmolTE/L, respectively. For the extraction time from 120 to 150 minutes, the resulting extracts with highest FRAP and DPPH free radical scavenging antioxidant capacity were obtained. Meanwhile, the antioxidant activity tended to decrease as the solvent/solid ratio increased.
Preparation and Characterization of Naturally Scented Candles Using the Lemongrass (Cymbopogon citratus) Essential Oil
Authors: Pham Hoang Danh , Pham Tri Nhut , Nga Do Thi Kim , Nhung Ngan Thi Thu , Lam Tri Duc , Toan Tran Quoc
Published: February 2020

At present, there are many different forms of relaxation and aromatic candles are one of the common forms. Scented candles not only provide background lighting but also help promoting a feeling of wellness. This study attempts to produce scented candles from natural sources such as soy wax, beeswax, and natural essential oils to bring the most practical benefits to the users. The produced candle should be long lasting, low cost and causes no health effects. The composition of scented candles included 60% beeswax, 30% soy wax, 8% lemongrass essential oil, 1% citric acid, and 1% ethanol.
Parameter Studies of Ceramic MEMS Microhotplates Fabricated by Laser Micromilling Technology
Authors: Samotaev Nikolay , Oblov Konstantin , Etrekova Maya , Veselov Denis , Gorshkova Anastasiya
Published: February 2020

This paper presents a modeling of technology aspects for fabrication ceramic microelectromechanical systems (MEMS) microhotplate and surface mounting device (SMD) packaging for (MOX) gas sensors applications. Innovative claims include: demonstration of flexible opportunities for new fabrication process flows based on laser micromilling tech; modeling of power consumption MEMS microhotplate depending on the thickness and topology; demonstration of necessity changing thick film technology of metallization to vacuum sputtering by reducing of power consumption. The results show possibility to fast fabrication of different topologies for ceramic MEMS microhotplate in form-factor of SOT-23 type SMD package.
UV Nonvolatile Sensor Using SANOS Capacitor Device
Authors: Hsieh Wen Ching , Tseng Wei Ting , Jong Fuh Cheng , Lee Hao Tien Daniel
Published: February 2020

The silicon-aluminum oxide-nitride-silicon oxide-silicon (hereafter SANOS) could be candidates for ultra violet total dose (hereafter UV TD) nonvolatile sensors. In the case of SANOS UV TD radiation sensors, the UV radiation induces a significant increase of threshold voltage VT. The changes of VT for SANOS after UV radiation have a correlation to the UV TD as well. In this paper, the performance for capacitor types of SANOS UV TD nonvolatile sensor were discussed in detailed. The SANOS capacitor device in this study has demonstrated the better feasibility for UV TD nonvolatile sensor application.
Fabrication, Characterization and Investigation of Novel PVDF/ZnO and PVDF-TrFE/ZnO Nanocomposites with Enhanced β-Phase and Dielectricity
Authors: Liu Ming Ran
Published: February 2020

To date, flexible, sensitive and biocompatible pressure sensors for fluctuation signals in human body have been mainly demonstrated for detecting body and muscle motion, pulse rate, heart rate and arterial blood pressure. However, because of the lack of sufficient sensitivity and flexibility, pulse signals with relatively low intensity cannot be identified and captured, such as signals derived from microcirculation in human body. As confirmed and validated by researchers, once PVDF and its copolymer based nanocomposite sensing material are applied in piezoelectric sensors, its sensitivity and piezoelectricity are highly relevant. Therefore, as one of the most effective methods to improve the permittivity and piezoelectricity of PVDF and its copolymer based nanocomposite, the effect of increasing the content of β-phase crystal was investigated in this work. In this project, the sensor possessing a novel sensing layer with the nanofiller was investigated and fabricated. The proposed sensor was designed in a simple but efficient sandwich structure. The sensing layer of the proposed sensor was made of polyvinylidene fluoride (PVDF) and polyvinylidenefluoride-trifluoroethylene (PVDF-TrFE) based nanocomposite with Zinc Oxide (ZnO) nanostructure acting as a filler portion which was fabricated by the method of Chemical Bath Deposition (CBD). The fabricated nanocomposite sensing layers were characterized. The microstructures and morphologies of pristine PVDF (P), PVDF-TrFE (PT), PVDF/ZnO (P/Z) and PVDF-TrFE/ZnO (PT/Z) with different concentration were characterized by Scanning Electron Microscope (SEM). The degree of crystallinity for P, PT, P/Z and PT/Z was obtained by X-ray Diffraction meter (XRD). In conclusion, PT exhibited better performance in both morphology and crystallinity as a sensing membrane material. More β‐phase in PT was obtained than that in P. ZnO, as a semiconductor filler, would have substantial influence on enhancing the dielectric constant by acting as a nucleating agent and forming a nanostructure with large aspect ratio.