bluuebunny/crossref_metadata_2025 huggingface dataset:
PENGARUH KINERJA BANK ATAS DANA PIHAK KETIGA
Authors: Rasyid Rosmita
Published: June 2019

Bank capital structure comes more from the third party fund than banking owner. Banking customers is almost impossible to control the actions of managers in the distributions of funds. Control of banking operations regulated by several provisions made by monetary authorities. Banking customers can monitor the progress by viewing the performance of the bank. The purpose of this study is to see how the performance of the bank influent the third party fund. Bank performance variables are NPL (Non Performing Loan), NIM (Net Interest Margin) dan LDR (Loan to Deposit Ratio) dan third party fund variables are Savings and Deposits. This study uses data that is state-owned bank in Indonesia in 2003-2012.The data were analyzed by EVIEWS program. The results showed that  NPL does not significantly influence the placement of customers funds, but, NIM have positive affect and LDR have negative affect. The results of this study are expected to contribute for the customers in deciding the placement of funds in the bank and for the IAI compartments and OJK to set accounting standards to improve the quality of reporting banks
PENENTU INTENSI PEMBELIAN TIKET PESAWAT ONLINE
Authors: Wiryawan Zahrida Zainal , Hidayah Nur , Herawati R Thea , Puspitowati Ida
Published: June 2019

Penelitian ini bertujuan untuk menjelaskan faktor penentu intensi pembelian tiket pesawat secara online, yang meliputi kualitas jasa internet, persepsi penggunaan, pemahaman risiko, persepsi harga, kepercayaan online, dan pengetahuan internet terhadap intensi pembelian tiket online. Penelitian dilakukan terhadap 300 responden yang pernah berpergian dengan menggunakan aplikasi pembelian tiket secara online. Teknik pengumpulan data dengan menyebarkan kuesioner pada responden yang terpilih sebagai anggota sampling. Teknik analisis dengan single dan multiple regression dengan menggunakan program Smartpls. Hasil dari penelitian menunjukkan kualitas jasa internet dan pengetahuan internet tidak berpengaruh, artinya tidak dapat digunakan sebagai prediktor intense pembelian tiket online. Sedangkan pemahaman risiko, persepsi harga, kepercayaan online, berpengaruh terhadap intense pembelian tiket online. Hasil penelitian tersebut diharapkan dapat memberikan kontribusi bagi pengelola tiket online untuk memperhatikan faktor yang menjadi intensi konsumen berbelanja tiket secara online. Perlu adanya perbaikan atas kualitas jasa tiket online dan pengetahuan internet terhadap tiket online, agar dapat menjadi dasar bagi intensi keputusan konsumen dalam melakukan pembelian. Selain itu untuk persepsi pengguna, pemahaman resiko,harga dan kepercayaan tiket secra online terus harus dapat ditingkatkan karena ke empat hal ini memberikan pengaruh pada intensi pembelian konsumen
METODE VALUASI MANAKAH YANG LEBIH TEPAT UNTUK MERGER DAN AKUISISI?
Authors: Johan Suwinto , Herbani Laura
Published: June 2019

The aim of this research is to study the various valuation methods in merger and acquisition transaction. Valuation is the most important part of a merger and acquisition deal. The seller always expects the highest value, however the buyer will expect to have a reasonable value of the target. It is important both parties agree and understand the basic views. The research will be focused on the most important variables and the valuation process of each method. The research will provide advantages and disadvantages of each method. The research also stated 3 important points in valuation, which are scarcity, regulation and time of valuation.Kata Kunci : Akuisisi, Merger, Nilai Perusahaan, Valuasi JEL Clarification Code : G32, G33, G34
PENGARUH KINERJA KEUANGAN TERHADAP KEBIJAKAN DIVIDEN (STUDI PADA INDUSTRI PERBANKAN YANG TERDAFTAR DI BEI)
Authors: Rasyid Rosmita
Published: June 2019

Pemegang saham berkepentingan untuk memperoleh pengembalian investasinya secara berkala dalam bentuk dividen yang dibagikan oleh perusahaan.Agar dapat membagi dividen perusahaan haruslah memiliki kinerja keuangan  yang sehat.Penelitian empiris mengenai pengaruh kinerja keuangan terhadap kebijakan dividen yang selama ini sering dilakukan adalah atas perusahaan manufaktur yang memberikan hasil yang berbeda-beda dan  masih sedikit penelitian yang dilakukan pada industri perbankan.Tujuan penelitian ini dilakukan untuk melihat bagaimana pengaruh kinerja keuangan yang tercermin dari rasio-rasio keuanganterhadap kebijakan dividen pada industri perbankan. Kinerja keuangan perbankan ditinjau dari sisi kemampulabaan, permodalan dan likuiditas  yang dalam hal ini dicerminkan dari rasio Return on Asset (ROA), Return On Equity (ROE), Net Interest Margin (NIM),Capital Adequacy Ratio (CAR), Non Performing Loan (NPL), dan Loan to Deposit Ratio (LDR) dan kebijakan dividen dicerminkan dari rasio Dividend Payout Ratio (DPR). Penelitian dilakukan pada industri perbankan yang go public di Bursa Efek Indonesia pada periode 2010-2014.Terdapat 29  perusahaan bank yang go public di Bursa Efek Indonesia pada periode 2010-2014. Penelitian ini menggunakan analisis regresi berganda yang diolah dengan EVIEWs. Hasil penelitian menunjukkan variabel ROA, CAR dan LDR berpengaruh negatif signifikan terhadap DPR, namun variabel NIM, NPL dan ROE tidak berpengaruh secara signifikan terhadap DPR.Keywords: KinerjaKeuangan, Bank, KebijakanDividen
ANALISIS RASIO KEUANGAN PERBANKAN TERHADAP KINERJA KEUANGAN DENGAN SUKU BUNGA SEBAGAI MODERASI
Authors: Kristanto Alfred
Published: June 2019

This study to analyze the effect of loan to deposit ratio, operational income operational expense, economic value added, return on asset, and capital adequacy ratio to stock return with interest rate of bank Indonesia as a moderation variable. Population used in this research is listed banking sector issuer in Indonesia Stock Exchange year 2012-2016. Data processing using SPSS version 24.0 testing using moderated regression analysis. Result on the research showed loan to deposit ratio, operational income operational expense, and capital adequacy ratio influence on stock return. Meanwhile, economic value added and return on assets not have influence on stock return. Simultaneously loan to deposit ratio, operational expense of operating income, economic value added, return on asset, and capital adequacy ratio have an effect on stock return.
PENGARUH STRUKTUR MODAL, UKURAN PERUSAHAAN, PERTUMBUHAN PERUSAHAAN TERHADAP KINERJA KEUANGAN PADA PERUSAHAAN NON KEUANGAN DENGAN MENGGUNAKAN DUPONT SYSTEM
Authors: Jonathan Ingrid Brigita
Published: June 2019

Tujuan Penelitian ini yaitu untuk mengetahui Pengaruh Struktur modal, Ukuran perusahaan, Pertumbuhan perusahaan terhadap Kinerja keuangan dengan menggunakan dupont system. Didalam penelitian ini metode yang digunakan adalah metode kuantitatif menggunakan program Eviews 8. Dari hasil penelitian yang telah dilakukan pada 167 perusahaan non keuangan menunjukan bahwa kinerja keuangan dipengaruhi oleh struktur modal dan ukuran perusahaan. Sedangkan Pertumbuhan perusahaan tidak mempengaruhi Kinerja keuangan. Hasil akhir dari penelitian ini belum memiliki kesimpulan yang kuat bahwa pertumbuhan perusahaan di Indonesia memiliki pengaruh terhadap kinerja perusahaan. R-square yang dihasilkan masih tergolong kecil. Keywords: Financial Performance, Capital Structure, Company Size, Corporate Growth
ANALISIS INTENSI KEWIRAUSAHAAN PADA MAHASISWA UNIVERSITAS PEMBANGUNAN JAYA
Authors: Prasetio Teguh , Hulu Dalizanolo , Barata Dion Dewa
Published: June 2019

Bidang kewirausahaan memegang peranan penting di dalam menjawab persoalan sosial berupa ketersediaan kesempatan kerja. Perguruan tinggi memiliki tanggung jawab agar berkontribusi terhadap solusi persoalan ketenaga-kerjaan tersebut. Salah satunya adalah dengan mendorong lulusan perguruan tinggi menjadi wirausaha.Entrepreneurial Intention (EI) adalah aspek yang sangat penting untuk membuat mahasiswa perguruan tinggi tidak hanya berorientasi menjadi pekerja atau karyawan pada institusi, baik swasta maupun pemerintah. EI mampu menggambarkan kemungkinan lulusan suatu perguruan tinggi akan memilih karir sebagai wirausahawan. Penelitian ini bertujuan untuk mengetahui kesesuaian model EI dengan mahasiswa Universitas Pembangunan Jaya sebagai responden penelitian. Selain itu juga diidentifikasi berbagai faktor yang dominan membentuk variabel laten.Penelitian ini merupakan penelitian konfirmatori yang bertujuan untuk mengkonfirmasi secara statistik model yang telah dibangun peneliti berdasarkan teori yang sudah ada.Hasil penelitian menunjukkan terdapat 11(sebelas) pengaruh antar variabel laten, di mana 7 (tujuh) pengaruh yang signifikan dan 4 (empat) pengaruh yang tidak signifikan. Sementara itu, pengaruh variabel laten terhadap indikator variabelnya semuanya menghasilkan nilai signifikan. Namun dengan membandingkan koefisien estimasi dari regression weight maka  dapat diketahui indikator variabel yang mempunyai pengaruh dominan, yaitu AO5, EA1, E12, ESE2, SN1, dan IO2.
PERAN INOVASI DAN PENGUATAN DAYA SAING BISNIS DENGAN PENERAPAN LEAN SIX-SIGMA CONCEPT
Authors: Supriyanto Hari
Published: June 2019

ABSTRAKDinamika dan perkembangan ekonomi global dapat memberikan sinyal positif terhadap pentingnya peningkatan pemberdayaan dan daya saing produk di pasar. Dibutuhkan pemikiran untuk membangun keunggulan kompetitif, yang menjadi dasar bagi peningkatan produksi dan daya saing bisnis. Peningkatan produksi merupakan serangkaian aktifitas untuk membentuk produktifitas. Bila salah satu aktifitas produksi mengalami kegagalam maka akan berpengaruh pada kualitas dan kapasitas produksi. Kegagalan biasanya terindikasi dari waste/ pemborosan yang muncul di sepanjang value stream. Terdapat indikasi defect yang tinggi melebihi 10% di sortir dan packaging process. Permasalahan utama adalah adanya waste/ pemborosan yang mengakibatkan penurunan kualitas dan kapasitas produksi. Paper ini akan mengidentifikasi waste yang terjadi di proses produksi, mencari akar penyebab terjadinya waste, dan membangun alternatif solusi perbaikan.  Diperlukan pemikiran kreatif untuk dapat menaikkan efisiensi sumber daya dan daya saing bisnis di pasar. Metoda yang dipakai untuk menyelesaikan permasalahan adalah Lean six-sigma. Konsep ini menelusuri permasalahan inefisiensi dengan cara mencari nonvalue added activity dari munculnya waste di sepanjang value stream.  Kemunculan waste selanjutnya diidentifikasi lebih dalam dengan root cause analisys (RCA) dan failure mode and effects analysis (FMEA). Hasil akhir dari FMEA adalah risk priority number (RPN) yang menggambarkan prioritas atas mode resiko untuk dilakukan perbaikan. Dari hasil prioritas dirancang 3 alternatif perbaikan yaitu pelatihan operator, pembuatan SOP proses produksi, dan pelatihan karyawan quality control.   Dengan pendekatan net present value (NPV), maka diperoleh nilai NPV yang positif, artinya alternatif tersebut adalah layak untuk dijalankan. Alternatif ini meningkatkan nilai sigma dari sigma awal sebesar 2,80 menjadi 3,30. Kenaikan nilai sigma akan memberi indikasi adanya penurunan tingkat defect per million opportunities (DPMO), dan berakibat pada penurunan biaya sampai 20%.  Kata kunci: daya saing, keunggulan kompetitif, Lean Six Sigma, RCA, FMEA, DPMO
PENGARUH STRUKTUR MODAL, UKURAN PERUSAHAAN, LIKUIDITAS TERHADAP KINERJA KEUANGAN YANG DIMODERASI INFLASI
Authors: Dahlia Cindhy
Published: June 2019

This study aims to obtain empirical evidence on the effect of capital structure, firm size, liquidity of financial performance and inflation as a moderating variable. The number of sample companies used in this study is 168 non financial companies period from 2012 to 2016. The results of this study indicate that on the capital structure have a significant negative effect of financial performance, firm size have a significant positive effect of financial performance, and liquidity have an non significant and positive effect of financial performance. Data were analyzed using panel data regression. Based on the analysis of regression panel data, we concluded that the inflation proved to have a pure moderating influence on the relationship between liquidity of the financial performance. Keyword: Capital Structure, Firm Size, Liquidity, Inflation, Financial performanceAbstrakPenelitian ini bertujuan untuk mendapatkan bukti empiris mengenai pengaruh struktur modal, ukuran perusahaan, likuiditas terhadap kinerja keuangan yang dimoderasi oleh inflasi. Jumlah sampel perusahaan yang digunakan dalam penelitian ini adalah 168 perusahaan non keuangan tahun 2012-2016. Hasil penelitian ini menunjukkan struktur modal berpengaruh negatif dan signifikan terhadap kinerja keuangan, ukuran perusahaan berpengaruh positif dan signifikan terhadap kinerja keuangan, likuiditas berpengaruh positif dan tidak signifikan terhadap kinerja keuangan. Data yang dianalisis menggunakan regresi data panel. Berdasarkan analisis regresi data panel, dapat disimpulkan bahwa inflasi sebagai variabel pure moderating antara pengaruh likuditas terhadap kinerja keuangan.Keyword: struktur modal, ukuran perusahaan, likuiditas, inflasi, kinerja keuangan
PERAN MEDIA SOSIAL DALAM STRATEGI KOMUNIKASI PEMASARAN DI SEBUAH PERGURUAN TINGGI SWASTA DI JAKARTA BARAT
Authors: Chandra Suhartono , Andrew Richard
Published: June 2019

Dewasa ini, di era digital, penggunaan media sosial menyebar lebih cepat dari yang pernah terjadi sebelumnya.  Salah satu penggunaan yang umum media sosial adalah dalam penerapan strategi komunikasi pemasaran. Strategi ini biasanya digunakan oleh institusi yang menargetkan Generasi-Z, seperti perguruan tinggi. Adapun tujuan dari penelitian ini adalah untuk mengukur tingkat optimalisasi penggunaan media sosial di salah satu Perguruan Tinggi Swasta di Jakarta Barat sebagai salah satu strategi komunikasi pemasaran. Peneliti menggunakan salah satu metode pengumpulan data dalam penelitian kualitatif, yaitu wawancara mendalam (in-depth interview) kepada 30 responden yang berasal dari sivitas akademika di perguruan tinggi swasta yang menjadi subyek penelitian dimana responden mahasiswa sebanyak 24 responden dan 6 responden dosen. Hasil penelitian menemukan bahwa strategi komunikasi pemasaran di perguruan tinggi tersebut masih perlu ditingkatkan karena ada yang belum optimal di bagian hubungan manajemen, aktualisasi berita, kreativitas, hiburan, konsistensi, kustomisasi, komitmen dan perhatian. Hasil penelitian mengungkapkan bahwa strategi tersebut akan lebih maksimal saat linearitas berita terjaga, jumlah konten yang aktual dan kreatif bertambah, laporan mengenai konten diaktualisasikan serta tautan dan kutipan pada setiap konten diupayakan eksistensinya. Kata Kunci: Komunikasi Pemasaran, Media Sosial
O DIREITO AO ESPORTE E A EDUCAÇÃO FÍSICA NA DÉCADA DE 80: O ARTIGO 217 EM DEBATE
Authors: Garutti Selson , Machado Rafael Pires
Published: June 2019

O artigo tem por objetivo analisar em qual conjuntura da Educação Física brasileira foi instituído o Artigo nº 217, o qual versa sobre o direito ao desporto. Como essa lei modificou o paradigma de esporte vigente. Utiliza a referência do materialismo histórico e como procedimento de estudo a pesquisa bibliográfica e a análise documental (TUBINO, 1992; 1994; 1997) & (OLIVEIRA. 1986; 1994; 2010). Conclui-se que essa conjuntura contribuiu para reorganizar o pensamento esportivo brasileiro, pelo qual se passou a considerar uma dimensão mais humanizante do esporte em detrimento a uma dimensão de esporte de rendimento.
AS EXPECTATIVAS ESCATOLÓGICAS NA(S) FILOSOFIA(S) DA HISTÓRIA DA IGREJA ASSEMBLEIA DE DEUS NO BRASIL
Authors: Roiz Diogo da Silva
Published: June 2019

Estuda-se o formato das expectativas escatológicas propagadas pelas filosofias da história construídas pela Igreja Assembleia de Deus no Brasil (Ministério de Belém) entre os anos 1970 e a primeira década do século XXI.
INFLUÊNCIA MIDIÁTICA NAS DECISÕES JUDICIAIS
Authors: Martins Márcia Gomes da Silva , Dorigon Alessandro
Published: June 2019

Atualmente os veículos de comunicação de massa ocupam destacado papel na sociedade, levando a informação a todos e formando opiniões. Com relação ao direito penal, a mídia acompanha e divulga crimes dos mais diversos, em especial os que chocam a sociedade e que são facilmente vendidos como matéria de grande comoção e repercussão para a sociedade. Destaca-se que liberdade de expressão exercida, inúmeras vezes, de forma sensacionalista e irresponsável, pelos veículos midiáticos, pode desrespeitar garantias constitucionais dos cidadãos, conflitando direitos fundamentais garantidos pela lei, e a mídia pode influenciar, em algumas situações de forma consciente ou inconsciente, o magistrado, um ser humano mortal e vulnerável e detentor do poder de julgar os crimes cometidos. Entende-se que o julgamento, realizado pela mídia consegue penetrar facilmente na órbita processual, intervindo no resultado parcial ou final do processo penal. O presente artigo tem como finalidade discutir a influência que a mídia exerce sobre as decisões judiciais, através de uma revisão de literatura, trazendo para a discussão exemplos de decisões judiciais, influenciadas pela mídia.
UMA VISÃO SOCIAL E JURÍDICA SOBRE O DIREITO À SAÚDE PÚBLICA NO BRASIL
Authors: Souza Fabricio Batista de , Marangoni Pedro Henrique , Prandi Luiz Roberto
Published: June 2019

Procurou-se com este trabalho lançar um olhar sobre o direito social à saúde, que é estabelecido constitucionalmente como um dever do Estado, diretamente ligada ao princípio fundamental da dignidade da pessoa humana e garantida mediante políticas sociais e econômicas. Partindo dessas diretrizes foi criado o Sistema Único de Saúde - SUS, cujos principais princípios norteadores são: universalidade de acesso aos serviços de saúde em todos os níveis de assistência, a integralidade de assistência, a igualdade da assistência à saúde, sem preconceitos ou privilégios de qualquer espécie. Entretanto, apesar do cuidado com que o legislador constituinte tratou saúde, o Estado tem violado esse direito social. As políticas públicas direcionadas a esta área, tem se mostrado insuficientes, e o país ainda tem problemas graves relacionados a este tema como falta de médicos, falta de medicamentos e de equipamentos, demora no atendimento, falta de estrutura dos hospitais, etc. Todas essas carências geram danos à população, passíveis de reparação civil, por parte do Estado.
Changes in Macular and Peripheral Perfusion Following Anti-vascular Endothelial Growth Factor Treatment for Patients with Diabetic Retinopathy
Authors: Wai Karen M. , Singh Rishi P.
Published: June 2019

Diabetic retinopathy (DR) is a common complication of diabetes mellitus. Imaging techniques such as the gold standard of fluorescein angiography (FA) and the recent advent of optical coherence tomography angiography (OCTA) have allowed for detailed visualization of the microvasculature to assess and quantify macular perfusion. The development of ultra-widefield FA (UWFA) has allowed clinicians to examine ischemia within the periphery. As our imaging and diagnostic methods continue to be refined, it is important to understand how to best utilize these technologies to characterize disease severity and determine how it can guide treatment and prognosis. With the increasing use of anti-vascular endothelial growth factor (VEGF) agents for the treatment of DR, we can characterize the changes in perfusion on the microvascular level. The focus of this review is to summarize and identify the changes in both macular and peripheral perfusion with anti-VEGF treatment for patients with DR utilizing FA, UWFA, and OCTA. There remains a need for more prospective, long-term clinical trials with controls to better understand the characterization of the retinal microvasculature using these imaging techniques. In clinical practice, physicians likely will need to utilize a multimodal imaging approach to appropriately characterize the degree and progression of ischemia in DR.
FOREIGN AND DOMESTIC CLUSTER DEVELOPMENT EXPERIENCE
Authors: Gaisha O. D.
Published: June 2019

The article considers such integration of subjects as a cluster, which represents a form of association of the interconnected companies in a certain territory, including scientific and technical and production enterprises, universities and research centers. The foreign experience of cluster development and in parallel the formation and functioning of domestic clusters has been analyzed. Based on the research, the directions for improving the domestic cluster policy have been proposed. The research used the methods of bibliographic and logical analysis.
THE THIRD SECTION OF ACCOUNTING BALANCE PASSIVE IS THE TERRITORY OF THE ORGANIZATIONAL OWNER
Authors: Evdokimova K. O. , Chebotareva Z. V.
Published: June 2019

The purpose of article is to reveal the essence of the third section of the liabilities side of the balance sheet, its content and value for the financial and economic activities of the organization and its owners in modern business. The articles of the third section of the liabilities side of the balance sheet, with an indication of what they are formed from, and with analytical conclusions, what they influence from the point of view of the company’s financial evaluation have been сonsidered. The requirements for the minimum size of the share capital for various organizations have been listed. The procedure for calculating the net assets of the company has been described.
EFFICIENT BUSINESS MODEL AS A BASIS FOR THE GROWTH OF THE INVESTMENT COST OF A PROFESSIONAL SPORTS CLUB
Authors: Litvishko O. V. , Golikova O. M.
Published: June 2019

The precarious financial condition of sports clubs, combined with negative cash flows and permanent losses, can be the cause of the further collapse of the entire football industry. This is largely due to the European model of the implementation of sports activities, when in the pursuit of a sports result, the basic principles of building a business and financial efficiency go to the background. The article has been devoted to the search questions of an effective business model for the further development of the professional sports industry, taking into account the modern requirements of a market economy. The arguments, that the financial rules, introduced by Union of European Football Associations, will make football clubs profitable projects attractive to investors, are given in the article.
IMPROVEMENT OF HEALTH CARE FINANCING IN THE REGION
Authors: Shchyukina T. V. , Plyuta S. N.
Published: June 2019

During implementation of the reforms of the health care financing system in the Russian Federation, new proportions of sources of financial support for this key area were determined, on which the level of health of the population depends, affecting the socio-economic indicators of the development of the state. The fundamental factors, on which depend the volume and sources of financing of health care in the region, have been analyzed in the article. The role of the regional budget as a source of health care financing in more detail on the example of the budget of the Irkutsk region has been considered. Trends and prospects for the development of the health care financing system in the region have been identified.
The current problems of the digital reflection of social reality: rethinking scientific concepts
Authors: Kibakin M. , Grishaeva S.
Published: June 2019

Need of new reading of sociological concepts of society of risk, network society, complex society and different scientific views on modern society in relation to process of an institutionalization of digital sociology as special sociological theory, subject matter and special methodology of knowledge of digital reality has been substantiated. Methodological approaches to use of the principles, the ideas and categories of various schools of sciences, groups of erudite and certain representatives of sociological science to development of the conceptual and categorial device, methodical potential and tools of digital sociology have been adduced. Special attention has been paid to the consideration of the concept of social network of the American sociologist Richard Mark Emerson in the context of digitalization. From positions of the concept of Richard Mark Emerson emergence of new dependences of users of Internet network on special category of subjects socially of interaction – moderators, administrators, owners of resources, the controlling public authorities and also manipulators of people’s attention has been explained; the specific motivation, which reveals itself in such phenomena as hypertrophied aspiration to the self-presentation (“selfie”, etc.); representation of the distorted virtual image for communications, hyperactivity in the appeal to various resources (“Internet surfing”) and also prevalence of motivators and estimated means – anonymous comments, “likes”, posts, reposts, symbolical encouragement and awards. Besides that, the behavior of Internet users has been considered in the context of the theory of the rational choice of the American sociologist James S. Coleman: at all risks of virtual interaction, the choice for integration of social communications into digital space, use of Internet resources for satisfaction of  personal and group needs brings more vital benefits for people, than folding of social activity in the Internet network.
Layered Manganese Bismuth Tellurides with GeBi4Te7– and GeBi6Te10–type Structures: Towards Multifunctional Materials
Authors: Souchay Daniel , Nentwig Markus , Günther Daniel , Keilholz Simon , Boor Johannes de , Zeugner Alexander , Isaeva Anna , Ruck Michael , Wolter Anja U. B. , Büchner Bernd , Oeckler Oliver
Published: June 2019

The crystal structures of new layered manganese bismuth tellurides with the compositions Mn0.85(3)Bi4.10(2)Te7 and Mn0.73(4)Bi6.18(2)Te10 were determined by single-crystal X-ray diffraction, including the use of microfocused synchrotron radiation. These analyses reveal that the layered structures deviate from the idealized stoichiometry of the 12P-GeBi4Te7 (space group P3m1) and 51R-GeBi6Te10 (space group R3m) structure types they adopt. Modified compositions Mn1–xBi4+2x/3Te7 (x = 0.15 – 0.2) and Mn1–xBi6+2x/3Te10 (x = 0.19 – 0.26) assume cation vacancies and lead to homogenous bulk samples as confirmed by Rietveld refinements. Electron diffraction patterns exhibit no diffuse streaks that would indicate stacking disorder. The alternating quintuple-layer [M2Te3] and septuple-layer [M3Te4] slabs (M = mixed occupied by Bi and Mn) with 1:1 sequence (12P stacking) in Mn0.85Bi4.10Te7 and 2:1 sequence (51R stacking) in Mn0.81Bi6.13Te10 were also observed in HRTEM images. Temperature-dependent powder diffraction and differential scanning calorimetry show that the compounds are high temperature phases, which are metastable at ambient temperature. Magnetization measurements are in accordance with a MnII oxidation state and point at predominantly ferromagnetic coupling in both compounds. The thermoelectric figures of merit of n-type conducting Mn0.85Bi4.10Te7 and Mn0.81Bi6.13Te10 reach zT = 0.25 at 375 °C and zT = 0.28 at 325 °C, respectively. Although the compounds are metastable, compact ingots exhibit still up to 80% of the main phases after thermoelectric measurements up to 400 °C.
Synthesis-Controlled Polymorphism, Magnetic and Electrochemical Properties of Li3Co2SbO6
Authors: Brown Alex J. , Kennedy Brendan J. , Ling Chris D.
Published: June 2019

Li3Co2SbO6 is found to adopt two highly distinct structural forms: a hexagonal layered O3- LiCoO2 type phase with “honeycomb” 2:1 ordering of Co and Sb; and an orthorhombic superstructure of rock-salt type, isostructural with Li3Co2TaO6 but with the addition of significant Li/Co ordering. Pure samples of both phase scan be obtained by conventional solid-state synthesis from the same precursors, Li3SbO4 and CoO, by controlling particle size and reaction time. Both phases show relatively poor performance as lithium-ion battery cathode materials in their as-made states, but complex and interesting low-temperature magnetic properties. The honeycomb phase orders antiferromagnetically below TN = 14 K, but a positive Weiss constant θw = 18.1 K points to strong ferromagnetic interactions in the paramagnetic regime above TN; and isothermal magnetisation below TN shows evidence for a field-induced “spin-flop” transition at H ~ 0.7 T. The rock-salt type superstructure phase orders antiferromagnetically below TN = 112 K, then undergoes two more transitions at 80 K and 60, suggesting close competition between at least three ground states. Consistent with such competition, the Weiss constant θw = -181 K indicates some frustration, there is a strong field-cooled / zero field-cooled divergence below TN, and isothermal magnetisation shows it to be magnetically soft with low coercivity.
A Complete Structural and Dynamic Characterization of Supramolecular Polymers via Automatic Learning of Defects
Authors: Gasparotto Piero , Bochicchio Davide , Ceriotti Michele , Pavan Giovanni M.
Published: June 2019

A central paradigm of self-assembly is to create ordered structures starting from molecular monomers that spontaneously recognize and interact with each other via noncovalent interactions. In the recent years, great efforts have been directed toward reaching the perfection in the design of a variety of supramolecular polymers and materials with different architectures. The resulting structures are often thought of as ideally perfect, defect-free supramolecular fibers, micelles, vesicles, etc., having an intrinsic dynamic character, which are typically studied at the level of statistical ensembles to assess their average properties. However, high-resolution molecular simulations recently demonstrated that local defects that may be present or may form in these assemblies, and which are poorly captured by conventional approaches, are key to controlling their dynamic behavior and properties. The study of these defects poses considerable challenges, as the flexible/dynamic nature of these soft systems makes it difficult to identify what effectively constitutes a defect, and to characterize its stability and evolution. Here, we demonstrate the power of unsupervised machine learning techniques to systematically identify and compare defects in supramolecular polymer variants in different conditions, using as a benchmark high-resolution molecular simulations of a family of supramolecular polymers. We shot that this approach allows a complete data-driven characterization of the internal structure and dynamics of these complex assemblies and of the dynamic pathways for defects formation and resorption. This provides a useful, generally applicable approach to unambiguously identify defects in these dynamic self-assembled materials and to classify them based on their structure, stability and dynamics.
Total Synthesis of (±)-Illisimonin A, a Neuroprotective Sesquiterpenoid from the Fruits of Illicium simonsii
Authors: Burns Alexander S. , Rychnovsky Scott
Published: June 2019

Illisimonin A was isolated from Illicium simonsii and has a previously unreported tricyclic carbon framework. It displayed neuroprotective effects against oxygen-glucose deprivation-induced cell injury in SH-SY5Y cells. It incorporates a highly strained trans-pentalene ring system. We report the first synthesis of illisimonin A. Notable steps in the route include a 1,3-dioxa-2-silacyclohexenetemplated Diels-Alder cycloaddition and type-3 semipinacol rearrangement to generate the trans-pentalene. The final step is an iron-catalyzed C-H oxidation. The synthetic route is robust, with 94 mg prepared in a single pass.
Enumeration of de novo Inorganic Complexes for Chemical Discovery and Machine Learning
Authors: Gugler Stefan , Janet Jon Paul , Kulik Heather
Published: June 2019

Despite being attractive targets for functional materials, the discovery of transition metal complexes with high-throughput computational screening is challenged by the amount of feasible coordination numbers, spin states, or oxidation states and the potentially large sizes of ligands. To overcome these limitations, we take inspiration from organic chemistry where full enumeration of neutral, closed shell molecules under the constraint of size has enriched discovery efforts. We design monodentate and bidentate ligands from scratch for the construction of mononuclear, octahedral transition metal complexes with up to 13 heavy atoms (i.e., metal, C, N, O, P, or S). From > 11,000 theoretical ligands, we develop a heuristic score for ranking a chemically feasible 2,500 ligand subset, only 71 of which were previously included in common organic molecule databases. We characterize the top 20% of scored ligands with density functional theory (DFT) in an octahedral homoleptic ligand database (OHLDB). The OHLDB contains i) the geometry optimized structures of 1,250 homoleptic octahedral complexes obtained from the enumerated pool of ligands and an open-shell transition metal (M(II)/M(III), M = Cr, Mn, Fe, or Co), and ii) the resulting high-spin/low-spin adiabatic electronic energies (ΔEH-L) obtained with hybrid DFT. Over the OHLDB, we observe structure–property (i.e., ΔEH-L) relationships different from those expected on the basis of ligand field arguments or from our prior data sets. Finally, we demonstrate how incorporating OHLDB data into artificial neural network (ANN) training improves ANN out-of-sample performance on much larger transition metal complexes.
Investigation of the Effects of Copper Nanoparticles on Magnesium-Sulfur Battery Performance: How Practical Is Metallic Copper Addition?
Authors: He Peng , Ford Hunter O. , Merrill Laura C. , Schaefer Jennifer
Published: June 2019

Rechargeable magnesium sulfur (Mg/S) batteries suffer from fast capacity fading due to difficulty of reoxidation of MgS and the polysulfide shuttle. Other works have reported that use of Cu current collectors or CuS at the cathode improves cycleability. Here we investigate Cu nanoparticles grown on carbon nanofibers (Cu@CNF) as an additive for the Mg/S battery cathode to test the effects of Cu metal on capacity and rate performance at controlled Cu loading. The Mg/S battery with Cu additives can run at 1 C with a capacity of 452 mAh/g after 100 cycles. It was confirmed via X-ray photoelectron spectroscopy that Cu2S forms during cathode formation and contributes to the high initial capacity, but then converts back to metallic Cu. Upon extending cycling, the Cu additives promote the formation of smaller, more dispersed discharge product particles, thereby enhancing reversibility. Finally, it is found that the loading of S and Cu at the cathode must be low to achieve substantial and sustained benefits of the Cu additives.
Molecular Dynamics Simulations of the “Breathing” Phase Transformation of MOF Nanocrystallites
Authors: Keupp Julian , Schmid Rochus
Published: June 2019

One of the intriguing features of certain metal-organic frameworks (MOFs) is the large volume change upon external stimuli like pressure or guest molecule adsorption, referred to as “breathing”. This displacive phase transformation from an open to a closed pore has been investigated intensively by theoretical simulations within periodic boundary conditions (PBC). However, the actual free energy barriers for the transformation under real conditions and the impact of surface effects on it can only be studied beyond PBC for nanocrystallites. In this work, we used the first-principles parameterized forcefield MOF-FF to investigate the thermal- and pressure induced transformations for nanocrystallites of the pillared-layer DMOF-1 (Zn 2 (bdc) 2 (dabco); bdc: 1,4-benzenedicarboxylate; dabco: 1,4-diazabicyclo[2.2.2]octane) as a model system. By heating of prepared closed pore nanocrystallites of different size, a spontaneous opening is observed within a few tenth of picoseconds with an interface between the closed and open pore phase moving with a velocity of several 100 m/s through the system. The critical nucleation temperature for the opening transition raises with size. On the other hand, by forcing the closing transition with a distance restraint between paddle-wheel units placed on opposite edges of the crystallite, the free energy barrier can be determined by umbrella sampling. As expected, this barrier is substantially lower than the one determined for a concerted process under PBC. Interestingly, the barrier reduces with the size of the crystallite, indicating a hindering surface effect. The results demonstrate the need consider domain boundaries and surfaces, for example by simulations that go beyond PBC and to large system sizes in order to properly predict and describe first order phase transitions in MOFs.
A Reinvestigation of the Deceptively Simple Reaction of Toluene with ●OH, and the Fate of the Benzyl Radical. I. a Combined Thermodynamic and Kinetic Study on the Competition Between ●OH Addition and Hydrogen Abstraction Reactions.
Authors: Salta Zoi , Kosmas Agnie M. , Segovia Marc E. , Kieninger Martina , Ventura Oscar , Barone Vincenzo
Published: June 2019

This work reports density functional and composite model chemistry calculations performed on the reactions of toluene with the hydroxyl radical. Both experimentally observed H-abstraction from the methyl group and possible additions to the phenyl ring were investigated. Reaction enthalpies and heights of the barriers suggest that H-abstraction is more favorable than ●OH addition to the ring. The calculated reaction rates at room temperature and the radical-intermediate product fractions support this view. This is somehow contradictory with the fact that, under most experimental conditions, cresols are observed in a larger concentration than benzaldehyde. Since the accepted mechanism for benzaldehyde formation involves H-abstraction, a contradiction arises that begs for an explanation. In this first part of our work we give the evidences that support the preference of hydrogen abstraction over ●OH addition and suggest an alternative mechanism which shows that cresols can actually arise also from the former reaction and not only from the latter.
NMR-Enhanced Crystallography Aids Open Metal-Organic Framework Discovery Using Solvent-Free Accelerated Aging
Authors: O’Keefe Christopher A. , Mottillo Cristina , Fábián László , Friscic Tomislav , Schurko Robert W.
Published: June 2019

NMR-enhanced crystallography enables the characterization of a novel cadmium-based, open metal-organic framework (MOF) from a solvent-free "accelerated aging" process. Whereas accelerated aging was devised as a clean, mild route for making MOFs, these results highlight how it application in materials discovery and characterization is aided by a combination of X-ray diffraction and solid-state NMR spectroscopy.
Pesquisas e reflexões sobre docência universitária: algumas contribuições para o debate
Authors: Sá Antônio Villar Marques de
Published: June 2019

Resumo
Reflexões sobre arte e indústria cultural
Authors: Subtll Maria
Published: June 2019

No presente texto discute-se a relação entre arte – particularmente a música – e Indústria Cultural, considerando-se as contradições inerentes a essa idéia formulada pelos autores frankfurtianos. Entendendo-se o campo cultural em que se situam os objetos musicais como um espaço de relações e de disputas pelo poder simbólico, discutem-se os gêneros erudito, popular e massivo, apontando-se para o hibridismo desses conceitos, tendo em vista os imperativos da sociedade capitalista de consumo. Também se historiciza, no texto, a produção, circulação e consumo artístico, enfocando-se novas possibilidades de fruição pela reprodutibilidade técnica dos objetos estéticos. Por fim, apresenta-se uma reflexão sobre a necessária relação entre fruição, consumo e formação a partir do ponto de vista adorniano, que considera a substituição da dimensão instrumental da razão pela dimensão emancipatória como condição para a desalienação.
O silêncio dos docentes: uma nova configuração?
Authors: Almeida Danilo
Published: June 2019

O presente ensaio traz uma indagação filosófica a respeito do que descreve como condição existencial silenciosa do docente. Uma vez posto em questão o seu silenciamento, o autor visa encontrar os traços da configuração do silêncio docente. Quando não há mais evidências de um silenciamento ostensivo e explícito, por que ainda silenciaria o docente? Tal investigação visa examinar a desistência ética e política da palavra, analisar a dimensão efetiva da ação docente, em seu desgaste e correlativo sentimento de déficit existencial. O autor procura aprofundar a hipótese de que o atual silenciamento docente tornou-se um modus vivendi, que exige de nós esforços para entender as implicações institucionais e existenciais do trabalho efetivo da docência. O que poderia sugerir desencorajamento em relação às possibilidades de superar as condições efetivas da ação docente nos aponta as possibilidades de transformação das condições adversas, graças mesmo ao fundo silencioso de nossa experiência e do corpo humano.
Intervenção e regulação: contribuição ao debate no campo da educação
Authors: Azevedo Janete
Published: June 2019

O presente artigo objetiva discutir os conceitos de intervenção e regulação, retomando, inicialmente, suas raízes históricas e teóricas, no sentido de contribuir para o debate no campo acadêmico das políticas públicas de educação. Ele explora o significado desses conceitos nas perspectivas liberal (e neoliberal) e do Estado de bem-estar social, relacionando-os com o contexto histórico nos quais foram produzidos. Argumenta que a regulação é funcional ao regime de acumulação capitalista e realiza também uma discussão crítica sobre as noções de regulação e reprodução. Por fim, aponta que a regulação no campo da educação decorre de lutas próprias e específicas, o que a torna um processo contraditório.
"Necessidade social" e política de educação superior
Authors: Nunes Edson , Ribeiro Leandro , Martignoni Enrico , Albrecht Julia
Published: June 2019

Desde o final do século XX, o governo do Brasil tem adotado medidas de massificação do ensino superior por meio do setor privado. Essa característica, apesar de não ter sido amplamente debatida pelo governo e tampouco pela sociedade, traz implicações concretas ao marco regulatório do ensino superior brasileiro. Quais deverão ser os critérios que orientarão a oferta de cursos? Neste sentido, o artigo busca analisar, partindo do uso do conceito de ‘necessidade social’, os desafios encontrados para definir legalmente as funções e objetivos de uma instituição de ensino superior. Argumenta-se que a falta de clareza nos conceitos legais cria mecanismos de regulação que não são coerentes nem com a lógica educacional nem com a jurídica.
A Língua Portuguesa na escola ontem e hoje
Authors: Silva Vanessa Souza da , Cyranka Lúcia Furtado de Mendonça
Published: June 2019

Conhecer a história da disciplina Língua Portuguesa no Brasil pode contribuir para a compreensão de algumas das dificuldades de se desenvolver, nas crianças e nos jovens, a competência de uso da leitura e da escrita. O presente artigo faz, então, um breve histórico do tratamento dessa disciplina na escola brasileira, a partir da concepção de linguagem prevalente em cada contexto histórico examinado, procurando compreender, dessa forma, o descompasso entre as novas perspectivas trazidas pelas teorias linguísticas contemporâneas e os velhos problemas que ainda determinam o fracasso escolar. Conclui-se que há, antes de tudo, a necessidade de uma organização curricular diferenciada para atender a realidade linguística de nossos alunos, objetivando o ensino de uma língua viva, dinâmica e real.
Uma política de certificação profissional orientada para inclusão social
Authors: Manfredi Silvia Maria
Published: June 2019

O artigo contém a reconstrução e análise das experiências recentes levadas a efeito pelo Departamento de Certificação e Orientação Profissional da Secretaria de Políticas Públicas de Emprego do Ministério do Trabalho e Emprego – MTE/2003-2007, voltadas para a construção de políticas inclusivas de qualificação, certificação e orientação profissional. O modelo de certificação profissional desenvolvido foi construído de forma participativa e negociada. Conceitualmente, pretende ser um contraponto a algumas orientações hegemônicas. Do ponto de vista jurídico-institucional visou à construção do Sistema Nacional de Certificação Profissional. O projeto pautou-se numa perspectiva inclusiva, pois pretendia ser, além de um mecanismo de credenciamento para o trabalho, uma passarela de ingresso/retorno ao sistema escolar formal ou de inserção em percursos formativos de natureza continuada. O modelo elaborado foi testado com duas categorias profissionais e tais experiências piloto também são retratadas no presente artigo.
The Two Cultures Debate Turns Sixty.
Authors: McLauchlan Danyl
Published: June 2019

One refreshing way to frame partisan intellectual debates is to think about status. If we strip away all the rhetoric and attempts to occupy the moral high ground what we’re often left with is the claim that some person or discipline should be raised or lowered in status, usually relative to some rival group. This is not a bad way to think about C. P. Snow’s famous “Two Cultures” lecture and the debate it sparked. “Scientists should be higher in status,” is the essence of Snow’s argument. The literary critic F. R. Leavis—who emerged as Snow’s most ferocious opponent—was far less generous towards his own tribe: both literary and scientific intellectuals other than himself should be much, much lower in status, Leavis seemed to feel, especially Snow who should have no status at all.
Juridical Encounters: Māori and the Colonial Courts, 1840-1852.
Authors: Jones Carwyn
Published: June 2019

Juridical Encounters: Māori and the Colonial Courts, 1840-1852 by Shaunnagh Dorsett is an engaging and nuanced study of the development of colonial laws and institutions in Aotearoa New Zealand and the expansion of the jurisdiction of state law that begins in this period. The issues explored in the book –  relating to the relationship between the law of the settler state and Indigenous law; the recognition of Māori law by the state legal system; and the authority with which Māori and state law speak – remain live issues today. Studying how those issues were addressed during the Crown colony period helps us to understand the current relationship between Māori law and state law, how we arrived at this point, and, crucially, it helps us to think about how to approach that relationship with legal techniques appropriate to the social and political context and objectives of the 21st century.
Improper People
Authors: Garcia Ryan
Published: June 2019

The short personal essay touches on the ambiguity in being Mexican American, in being a member - but not a member - to two communities.
The River of Doubt
Authors: Erickson Terri
Published: June 2019

This poem is a tribute to explorer Colonel Candido Rondon.
Carta al caballero de la triste figura
Authors: Urbano Lena
Published: June 2019

This poem is inspired in the letter written by El caballero de la triste figura in Don Quixote's chapter XXV.