bluuebunny/crossref_metadata_2025 huggingface dataset:
Design and Characterization of Effective Ag, Pt and AgPt Nanoparticles to H2O2 Electrosensing from Scrapped Printed Electrodes
Authors: Gómez-Monedero Beatriz , González-Sánchez María-Isabel , Iniesta Jesús , Agrisuelas Jerónimo , Valero Edelmira
Published: April 2019

The use of disposable screen-printed electrodes (SPEs) has extraordinarily grown in the last years. In this paper, conductive inks from scrapped SPEs were removed by acid leaching, providing high value feedstocks suitable for the electrochemical deposition of Ag, Pt and Ag core-Pt shell-like bimetallic (AgPt) nanoparticles, onto screen-printed carbon electrodes (ML@SPCEs, M = Ag, Pt or AgPt, L = metal nanoparticles from leaching solutions). ML@SPCEs were characterized by scanning electron microscopy, cyclic voltammetry and electrochemical impedance spectroscopy. The results were compared to those obtained when metal nanoparticles were synthesised using standard solutions of metal salts (MS@SPCEs). Both ML@SPCEs and MS@SPCEs exhibited similar cyclic voltammetric patterns referred to the electrochemical stripping of silver or the adsorption/desorption of hydrogen/anions in the case of platinum, proving leaching solutions extremely effective for the electrodeposition of metallic nanoparticles. The use of both ML@SPCEs and MS@SPCEs proved effective in enhancing the sensitivity for the detection of H2O2 in phosphate buffer solutions (pH = 7). The AgPtL@SPCE was used as proof of concept for the validation of an amperometric sensor for the determination of H2O2 within laundry boosters and antiseptic samples. The electrochemical sensor gave good agreement with the results obtained by a spectrophotometric method with H2O2 recoveries between 100.6% and 106.4%.
Development of a High Pressure Liquid Chromatography with Diode Array Detection Method for the Determination of Four Tetracycline Residues in Milk by Using QuEChERS Dispersive Extraction
Authors: Marinou Eirini , Samanidou Victoria F. , Papadoyannis Ioannis N.
Published: April 2019

QuEChERS (quick, easy, cheap, effective, rugged and safe) dispersive extraction was applied for the extraction of tetracyclines (oxytetracycline, tetracycline, chlorotetracycline and doxycycline) from milk. Target analytes were determined by an accurate and sensitive chromatographic analytical method, which was validated in terms of 2002/6572/EC decision. The analytes were separated on an Orbit 100C4 (5 μm, 250 × 4.0 mm) analytical column under a gradient mobile phase composed of a mixture of 0.01 M oxalic acid, 10−4 M Na2EDTA and acetonitrile. For the extraction of isolated compounds from sorbent, a methanol and 0.01 M oxalic acid mixture (1:1 v/v) was used, leading to relative recovery rates from 83.07% to 106.3% at concentration levels in the range 100–200 μg/kg. The within-laboratory reproducibility, expressed as a relative standard deviation, was <15.5%. Decision limits ranged between 100.3 μg/kg and 105.6 μg/kg and the detection capability varied between 100.6 μg/kg and 109.7 μg/kg. Ruggedness was evaluated by following the Youden approach, in terms of milk mass, sorbent mass, centrifugation time, vortex time, type and volume of organic solvents and evaporation temperature.
Bulgarian Revival culture - an axiological perspective in the texts of Januarius MacGahan and Stanislas St. Claire
Authors: Hristov Zhivko
Published: April 2019

Analyzing the vocabulary and the stylistic techniques in the works of the two authors, dedicated to Bulgaria, the article aims to contribute to a change of the two seemingly contrasting attitudes in their Bulgarian reception. The first is the implicit attitude to MacGahan as a "dangerous" author whose work is not even published with its true title - "The Turkish atrocities in Bulgaria". The focus of the analysis are the passages that deal with the Bulgarian material culture and education, as well as their axiological charge. The second is the negative value-based perception of the Bulgaro-phobic texts of St. Clair, an author obviously considered ineligible for translating into Bulgarian. However, his work might be a valuable source of knowledge about the culture of the Bulgarian national revival, provided that our reception remains neutral and unaffected by his derogatory language.
Systems and accidents in 20th century magical realist literature: Salman Rushdie's "Midnight's Children" and Sadegh Hedayat's "The blind owl" as critiques of modern nation-making experiments
Authors: Fernée Tadd Graham
Published: April 2019

This article compares two major 20th century magical realist novels - Salman Rushdie’s Midnight’s Children and Sadegh Hedayat’s The Blind Owl – as critiques of modern nation-making practices, in Nehruvian post-independence India and Iran under Reza Shah Pahlavi. The analysis centers the interplay of accidents and systems, in political constructions and contestations of modern self, history and knowledge. The works are assessed in terms of two aesthetic paradigms of modernity: Baudelaire’s vision of modernity as traumatic deracination involving new creative possibilities and freedom, and Cocteau’s vision of modernity as an Infernal Machine where a pre-recorded universe annihilates creative freedom. The political significance of these aesthetics are evaluated against the two distinctive nationalist narratives which the authors set out to contest in their respective novels. Both novels offer important critiques of violence. Yet both reveal a Proustian aesthetic of nostalgia, rejecting organized political action in the public sphere to celebrate imaginative introversion.
Is there an illocutionary act of assertion?
Authors: Chankova Mariya
Published: April 2019

This contribution analyzes Cappelen’s No-Assertion view arguing that, although appealing, the No-Assertion view is based on a questionable premise, namely, that assertions are sayings. Austin’s notions of locution and saying are examined, in order to show that illocutionary acts concern aspects not covered by either of the previous two terms. Following a reconstructed definition of illocutionary act from Austin’s writings, I suggest that assertion is an illocutionary act, in that it takes effect after it is taken up by a hearer. I further suggest that in this respect the game analogy fails with regard to assertion, since no rules of the constitutive kind or norms can intrinsically define this act. This proposal is based on the idea that illocutionary act analysis should dispose of any preoccupations with propositions. It argues that expressing propositions was not originally and should not be at the core of speech act theoretic problematic.
Some factors which may affect the attainment of implicit and explicit knowledge in learning English as a second or foreign language
Authors: Gotseva Mariana
Published: April 2019

This article is an attempt to shed some more light on certain factors, related to individual differences in the process of second/foreign language acquisition/learning, proven by previous research in the field of second language acquisition (SLA). These are factors which may affect the final attainment of adult learners’ implicit and explicit knowledge of English as a second/foreign language and their proficiency. A study based on empirical data collected from a sample of 103 participants, through a battery of tests, aimed at tapping into the attainment of implicit or explicit knowledge of ESL/EFL, was conducted to explore certain factors such as: starting age of learning; length of exposure to English as a second/foreign language in a target language country; length of learning and type of input received, which have a statistically significant impact on attainment and on ESL/EFL proficiency. The results were analysed using SPSS software.
Bulgarian polemics on American Generativism 1950s-1970s: a peek through the Iron curtain
Authors: Venkova Tzvetomira
Published: April 2019

The paper discusses the attitude of Bulgarian linguistic circles towards American generative grammar at its birth and establishment in the period from the 1950s to the 1970s. Bulgarian treatment of generativism is analysed by following the two opposing lines in it: the hegemonic ideologically-biased rejection and its polemic support. An attempt is made to disregard the heat of discussions and rather focus on the underlying grounds of the criticism. The philosophical-ideological motivation of the polemics is considered, as well as the key topics of generative grammar, upheld by its proponents. In general, the analysis tends to the study of the processes of intellectual and cultural transfer in modern linguistics.
Componentes de produção da alface em função de níveis de sais na água de irrigação
Authors: Santos Rayane Stefane Da Silva , Costa Luis Felipe Ferreira da , Silva Julianna Catonio da , Silva José Hamilton Gomes da , Almeida Rodolfo Silva , Barros Allan Cunha
Published: April 2019

A alface é uma das hortaliças folhosas mais consumidas mundialmente. Essa cultura é exigente em água, além de apresentar sensibilidade à salinidade da água de irrigação. Nesse sentido, o objetivo do trabalho foi avaliar os componentes de produção da alface em função de níveis de sais na água de irrigação. O experimento foi conduzido em ambiente protegido na Universidade Federal de Alagoas, Campus Arapiraca. Os tratamentos foram cinco níveis de condutividade elétrica (S1=0,12; S2=1,62; S3=3,12; S4= 4,62; S5=6,12 dS m-1). O delineamento foi em blocos casualizado, com oito repetições, totalizando 40 parcelas experimentais. As parcelas foram constituídas por garrafas PET. O volume aplicado diariamente foi equivalente a 20% superior a Capacidade de campo. Quanto maior a quantidade de sais presente na água de irrigação, maior a drenagem e menor o volume aplicado e consequentemente o consumo hídrico da cultura da alface. Todos os componentes de produção apresentaram um comportamento linear decrescente com o aumento dos níveis de sais na água de irrigação.
Consumo hídrico do coentro sob estratégia de irrigação com água salina no agreste alagoano
Authors: Silva Julianna Catonio da , Costa Luis Felipe Ferreira , Oliveira Jerônimo Dos Anjos , Farias Anderson Victor Alves de , Santos Lucas Elias A`quim Silva , Santos Márcio Aurélio Lins dos
Published: April 2019

A determinação do consumo hídrico do Coentro com a utilização de água salina é um fator importante com a situação encontrada no semiárido. Dessa forma, objetivou-se encontrar o consumo hídrico da cultura do coentro utilizando água salina no agreste de Alagoas. O experimento foi conduzido em casa de vegetação pertencente ao curso de Agronomia da Universidade Federal de Alagoas, Campus de Arapiraca, no período compreendido entre agosto e setembro de 2018. Foi adotado o delineamento inteiramente casualizados (DIC), com 5 tratamentos e 4 repetições, totalizando 20 parcelas experimentais. O tratamento foi constituído por 5 lâminas de irrigação (L1: 50; L2: 75; L3: 100; L4:125 e L5:150% da ETc (evapotranspiração da cultura). A parcela foi representada por um recipiente plástico com capacidade para 5,0 L. As lâminas de irrigação foram determinadas por meio do sistema SLIMCAP (sistema lisimétrico de informações para monitoramento do consumo de água pelas culturas) instalados na área experimental. As variáveis analisadas foram: Altura de Planta (AP), Número de Hastes (NH), Comprimento da Raiz (CR), Massa Fresca da Parte Aérea (MFPA), Massa Fresca da Raiz (MFR), Massa Seca da Parte Aérea (MSPA), Massa Seca da Raiz (MSR) e Massa Seca Total (MST). O maior valor encontrado para todas as variáveis analisadas foi para lâminas de irrigação superior a 100% da ETc. Assim, mesmo utilizando água salina, a cultura do coentro é capaz de produzir.
Perancangan Media Panduan Wisata Alam dan Cagar Budaya Banyuwangi
Authors: Gunawan Nicky Septiani , Noviadji Benny Rahmawan , Bangsawan Arjuna
Published: April 2019

Kabupaten Banyuwangi merupakan kabupaten yang memiliki Objek Daya Tarik Wisata (ODTW) yang sangat beragam. Sebagai Kabupaten yang memiliki kekayaan objek wisata, Banyuwangi memiliki permasalahan dalam media yang tidak mampu memaksimalkan buku panduan wisata dan media promosi sebagai media pengenalan, panduan dan promosi, sehingga persentase wisatawan domestik dan mancanegara mengalami peningkatan yang fluktuatif dan kurang dikenal oleh wisatawan. Media yang mengusung tentang objek wisata Banyuwangi juga susah didapat dan jarang ditemukan. Berdasarkan dari permasalahan tersebut, maka tujuan dari perancangan ini adalah sebagai media praktis untuk mengenalkan objek wisata alam dan cagar budaya Banyuwangi, serta memberikan pengetahuan dan wawasan kekayaan wisata Banyuwangi. Metode pengumpulan data yang digunakan dalam perancangan ini bersifat kualitatif dan kuantitatif. Pengumpulan data primer dilakukan dengan metode wawancara mendalam, observasi dan kuesioner. Sedangkan pengumpulan data sekunder dilakukan dengan metode dokumentasi, kepustakaan dan penggalian data dari sumber-sumber yang terdapat di internet. Dengan adanya perancangan ini diharapkan Kabupaten Banyuwangi dapat memiliki media panduan wisata alam dan cagar budaya yang lebih informatif, praktis dan menarik sebagai media panduan, pengenalan serta promosi sehingga mampu menarik perhatian wisatawan domestik dan mancanegara, serta mampu meningkatkan persentase pengunjung objek wisata Banyuwangi.
Pengembangan Aplikasi Mobile Learning untuk Pertolongan Pertama
Authors: Chai Sumei , Akhyarsi Odi , Wijayanto Heru
Published: April 2019

Pengetahuan dan pelatihan mengenai Pertolongan Pertama merupakan hal yang terbilang penting. Oleh karena itu, diperlukan fasilitas yang lebih mudah bagi masyarakat yang tertarik untuk mengikuti pelatihan ini. Mengingat banyak masyarakat yang terhalang jarak dan waktu untuk mempelajarinya, maka dilakukanlah pengembangan metode pelatihan dengan memanfaatkan berbagai teknologi yang ada saat ini sehingga persoalan jarak dan waktu serta informasi dapat terselesaikan. Pengembangan yang dilakukan memungkinkan peserta melaksanakan proses pelatihan secara mobile.
Pemanfaatan Augmented Reality Pada Permainan Othello
Authors: Aguston Rendy Layman , Andika Hermawan , Trianto Edwin Meinardi
Published: April 2019

Perkembangan teknologi telah mengubah cara pengerjaan suatu pekerjaan dari cara konvensional menjadi cara yang lebih praktis. Dengan hadirnya teknologi Augmented Reality, cara bermain yang menggunakan pion dan membalikkan pion musuh secara manual menjadi lebih mudah dalam memainkan permainan selain juga dapat berinteraksi langsung. Pembuatan permainan Othello menggunakan program Unity dengan framework Vuforia untuk mewujudkan Augmented Reality pada permainan Othello. Untuk menerapkan Augmented Reality dengan baik, dibutuhkan papan permainan sebagai image target yang sesuai dengan kriteria, jenis kamera yang digunakan, jarak kamera terhadap papan permainan, intensitas cahaya yang ditangkap kamera, serta tingkat sensitivitas tombol virtual. Pada permainan Othello ini tersedia fitur komputer yang menggunakan algoritma Alpha Beta Pruning dengan 3 level kedalaman yang menggunakan perhitungan fungsi evaluasi berupa mobility, potential mobility dan penguasaan corner yang menghasilkan kemenangan mencapai 73,33% dari 15 kali uji coba terhadap aplikasi Othello serupa dan 78,34% dari 37 kali uji coba terhadap user.
Evaluasi Aplikasi Media Pembelajaran Statistika Dasar Menggunakan Metode Usability Testing
Authors: Sabandar Vederico Pitsalitz , Santoso Harry Budi
Published: April 2019

Dalam mengembangkan suatu sistem, suatu prinsip utama yang dijadikan ukuran keberhasilan dari sistem tersebut ialah usability. Penelitian ini bertujuan untuk mengevaluasi Aplikasi Media Pembelajaran Statistika Dasar (AMPSD) serta memperoleh rekomendasi guna pengembangan selanjutnya. Evaluasi yang dilakukan, berfokus pada aspek usability yang terdiri dari efektivitas, efisiensi, dan kepuasan pengguna. Selanjutnya, rekomendasi yang diperoleh kemudian disusun menggunakan prinsip desain interaksi. Penelitian ini menggunakan metode usability testing dengan target pengujian terdiri dari kelompok dosen dan mahasiswa sebanyak 30 responden. Selanjutnya, untuk mengukur tingkat kepuasan pengguna, digunakan kuesioner System Usability Scale (SUS). Hasil evaluasi yang dilakukan, menunjukkan bahwa AMPSD telah memenuhi tiga aspek usability, yaitu efektivitas, efisiensi, dan kepuasan pengguna. Hasil analisis terhadap tingkat efektivitas dan efisiensi penggunaan aplikasi menunjukkan bahwa baik pada kelompok dosen maupun mahasiswa, sukses (tidak mengalami kegagalan) dalam menyelesaikan tugas dengan lamanya waktu yang dibutuhkan dikategorikan sangat cepat. Selanjutnya, hasil analisis terhadap tingkat kepuasan pengguna menggunakan kuesioner SUS, menunjukkan bahwa aplikasi tersebut dapat diterima (acceptable). Rekomendasi yang diperoleh yaitu terkait dengan tampilan interface dan konten yang terdapat pada halaman beranda, game education, dan materi, dimana perlu dirancang kembali agar lebih memudahkan user dan tidak menimbulkan kejenuhan selama menggunakan aplikasi tersebut.
Pemanfaatan Teknologi Informasi Dalam Mendukung Posyandu Terkait Dengan Tumbuh Kembang Anak
Authors: Liliana Liliana , Absari Dhiani Tresna
Published: April 2019

Tumbuh kembang anak di usia masa emas, yaitu 0 hingga 5 tahun, memiliki pengaruh yang cukup besar dalam pertumbuhannya di masa mendatang. Untuk itu, orang tua wajib memantau perkembangan anaknya dengan teliti, salah satunya dengan memanfaatkan kegiatan Posyandu. Posyandu merupakan salah satu Upaya Kesehatan Berbasis Masyarakat (UKBM) yang dikelola dan diselenggarakan oleh masyarakat guna memberikan kemudahan kepada masyarakat dalam memperoleh pelayanan kesehatan pada ibu hamil dan balita. Melihat pertumbuhan pengguna internet yang meningkat, maka hal ini dapat digunakan sebagai salah satu alternatif solusi untuk membantu Posyandu dalam meningkatkan kesadaran orang tua, ibu secara khusus, dalam memantau tumbuh kembang anak. Saat ini, data tumbuh kembang anak sebagai dasar penilaian status gizi anak dicatat manual dalam bentuk Kartu Menuju Sehat (KMS) ataupun buku Register Kohort sehingga menimbulkan kesulitan jika catatan tersebut tidak tersedia pada saat kegiatan Posyandu berlangsung. Berdasarkan analisis yang telah dilakukan, maka dapat diambil kesimpulan bahwa untuk membantu proses yang terjadi dalam Posyandu, dibutuhkan suatu sistem terintegrasi. Aplikasi website dapat digunakan oleh semua user yang terdaftar, terutama petugas puskesmas dan Posyandu, untuk membantu entri data pada sistem. Sedangkan aplikasi mobile, dapat digunakan oleh anggota Posyandu, untuk membantu pendistribusian informasi kegiatan, pencatatan kegiatan anak, serta pengingat jadwal yang dibutuhkan.
A NEW MODEL APPROXIMATING M/PH/1 QUEUING SYSTEMS DURING THE TRANSIENT PERIOD
Authors: Gao H. , Lynch M. A. M.
Published: April 2019

This paper presents an efficient approximation for M/PH/1 queuing systems based on the replacement of the majority of the vector valued state probabilities by a diffusion approximation. The strength of the new approximation is that it gives more accurate results than the current diffusion approximations at both high and low traffic intensities and at little extra computational cost. The accuracy of the new approximation during the transient is shown by comparing it numerically with solutions to the M/PH/1 system and current approaches based on the diffusion approximation.
ON REPRESENTATION FORMULA FOR SOLUTIONS OF HAMILTON‐JACOBI EQUATION FOR SOME TYPES OF INITIAL CONDITIONS
Authors: Gudynas G.
Published: April 2019

This article investigates the representation formula for the semiconcave solutions of the Cauchy problem for Hamilton‐Jacobi equation with the convex Hamiltonian and the unbounded lower semicontinous initial function. The formula like Hopf ‘s formula is given by forming envelope of some fundamental solutions of the equation.
APPLICATION OF THE CONSERVATIVE AVERAGING FOR THE FILTRATION PROBLEM WITH LARGE VELOCITY
Authors: Jegorov J. , Buikis A.
Published: April 2019

In this paper we consider a filtration problem in a rectangle or a perturbed rectangle region with an essential nonlinearity and high values of velocity. The conservative averaging method with quadratic or rational approximation over the rectangle thickness gives us 1D problem instead of the original 2D problem. This ID solution can be used as an initial approximation for the original 2D problem. The conservative averaging method is considered and results of some numerical experiments are presented.
THE METHOD OF DUAL INTEGRAL EQUATIONS FOR ANALYSIS OF HEAT TRANSFER PROCESSES
Authors: Mandrik P. A.
Published: April 2019

The paper is devoted to the study of a heat conduction equations with mixed boundary conditions on a surface of a researched solid. The method based on the Laplace and Hankel transforms is suggested for the first time to reduce such differential problems to dual integral equations and to obtain the solution in the close form. Method allows to determine analytically regularities of time‐space development of appropriate temperature fields.
STABILITY OF PIECEWISE POLYNOMIAL COLLOCATION FOR VOLTERRA INTEGRO‐DIFFERENTIAL EQUATIONS
Authors: Oja P. , Tarang M.
Published: April 2019

Numerical stability of the spline collocation method by piecewise polynomials for Volterra integro‐differential equations is investigated. Stability conditions depending on collocation parameters and also on parameters of certain test equation are obtained. Results of several numerical tests are presented supporting theoretical results.
The Green Bank North Celestial Cap Pulsar Survey. IV. Four New Timing Solutions
Authors: Aloisi R. J. , Cruz A. , Daniels L. , Meyers N. , Roekle R. , Schuett A. , Swiggum J. K. , DeCesar M. E. , Kaplan D. L. , Lynch R. S. , Stovall K. , Levin Lina , Archibald A. M. , Banaszak S. , Biwer C. M. , Boyles J. , Chawla P. , Dartez L. P. , Cui B. , Day D. F. , Ford A. J. , Flanigan J. , Fonseca E. , Hessels J. W. T. , Hinojosa J. , Karako-Argaman C. , Kaspi V. M. , Kondratiev V. I. , Leake S. , Lunsford G. , Martinez J. G. , Mata A. , McLaughlin M. A. , Noori H. Al , Ransom S. M. , Roberts M. S. E. , Rohr M. D. , Siemens X. , Spiewak R. , Stairs I. H. , van Leeuwen J. , Walker A. N. , Wells B. L.
Published: April 2019

We present timing solutions for four pulsars discovered in the Green Bank Northern Celestial Cap survey. All four pulsars are isolated with spin periods between 0.26 and 1.84 s. PSR J0038−2501 has a 0.26 s period and a period derivative of 7.6 × 10−19 s s−1, which is unusually low for isolated pulsars with similar periods. This low period derivative may be simply an extreme value for an isolated pulsar or it could indicate an unusual evolution path for PSR J0038−2501, such as a disrupted recycled pulsar from a binary system or an orphaned central compact object (CCO). Correcting the observed spin-down rate for the Shklovskii effect suggests that this pulsar may have an unusually low space velocity, which is consistent with expectations for DRPs. There is no X-ray emission detected from PSR J0038−2501 in an archival Swift observation, which suggests that it is not a young orphaned CCO. The high dispersion measure of PSR J1949+3426 suggests a distance of 12.3 kpc. This distance indicates that PSR J1949+3426 is among the most distant 7% of Galactic field pulsars, and is one of the most luminous pulsars.
A new species of Trismegistomya Reinhard (Diptera: Tachinidae) from Area de Conservación Guanacaste in northwestern Costa Rica
Authors: Fleming AJ , Wood D. Monty , Smith M. Alex , Dapkey Tanya , Hallwachs Winnie , Janzen Daniel
Published: April 2019

The New World genus Trismegistomya Reinhard, 1967b (Diptera: Tachinidae) previously included only the type species Trismegistomyapumilis (Reinhard, 1967a) from Arizona, U.S.A.

We describe a new species of Trismegistomya, Trismegistomyajimoharai Fleming & Wood sp. n., from Area de Conservación Guanacaste (ACG) in northwestern Costa Rica, reared from wild-caught caterpillars of Melipotisjanuaris (Guenée, 1852) (Lepidoptera: Erebidae). Our study provides a concise description of the new species using morphology, life history, molecular data and photographic documentation. In addition to the new species description, we provide a redescription of the genus, as well as of its type species Trismegistomyapumilis.
Single-Use Custom Instrumentation in Total Knee Arthroplasty: Effect on In-Hospital Complications, Length of Stay, and Discharge Disposition
Authors: Harold Ryan E. , Macleod Jonathan , Butler Bennet A. , Sullivan Ryan , Beal Matthew D. , Manning David W.
Published: April 2019

Total knee arthroplasty (TKA) is a quality surgical intervention with rapidly increasing use. This growth has brought with it a host of new technologies, including custom instrumentation (CI). With the current emphasis on value-based health care, the clinical benefit of CI TKA must be evaluated. The goal of this study was to compare CI and conventional TKA regarding multiple quality metrics, in-hospital complications, length of stay, and discharge destination. The authors propensity score matched 231 conventional TKAs to 231 consecutive CI TKAs for age, sex, and body mass index. Preoperative risk factors analyzed were age, sex, body mass index, and preoperative hemoglobin. Perioperative factors included transfusion rate, hemoglobin drop, hemovac output, operative time, length of stay, discharge disposition, deep venous thrombosis and pulmonary embolism rates, and in-hospital vital sign data. There were no differences in preoperative demographics between groups. Postoperatively, there was no difference between conventional and CI TKA in operative time, transfusion rate, discharge hemoglobin, length of stay, discharge disposition, or in-hospital venous thromboembolism rates. In the conventional and CI groups, length of stay was 2.6 and 2.5 days (
P
=.43) and discharge disposition was 82% home and 83% home (
P
=.90), respectively. Although CI TKA is commonly implemented, in this analysis, compared with conventional TKA, it was not associated with any difference in length of stay, discharge disposition, operative time, transfusion rate, or in-hospital complications. [
Orthopedics.
2019; 42(5):299–303.]
Anterior Cervical Corpectomy and Fusion Versus Posterior Laminoplasty for Cervical Oppressive Myelopathy Secondary to Ossification of the Posterior Longitudinal Ligament: A Meta-analysis
Authors: Qin Rongqing , Sun Weiwei , Qian Baiyu , Hao Jie , Zhou Pin , Xu Chunxiang , Chen Cheng , Yang Kai , Zhang Feng , Chen Xiaoqing
Published: April 2019

The purpose of this study was to compare the clinical effect of anterior cervical corpectomy with fusion vs laminoplasty for cervical ossification of the posterior longitudinal ligament. The outcome measures included the Japanese Orthopaedic Association score, neurological recovery rate, and complication rate. Subgroup A represented studies with the mean preoperative canal occupying ratio being less than 50%, whereas subgroup B represented studies with the mean canal occupying ratio being 50% or greater. In subgroup A, no difference was found between the 2 groups in the postoperative Japanese Orthopaedic Association score and neurological recovery rate. In subgroup B, the anterior cervical corpectomy with fusion group had a higher postoperative Japanese Orthopaedic Association score and neurological recovery rate. The authors recommend anterior cervical corpectomy with fusion for cervical ossification of the posterior longitudinal ligament when the canal occupying ratio is 50% or greater, and they prefer laminoplasty when the canal occupying ratio is less than 50%. [
Orthopedics.
2019; 42(3):e309–e316.]
Prevalence and Trends of Patient-Reported Outcome Measures Used in Hip Arthroscopy
Authors: Renouf Jesse , Pergaminelis Nicholas , Tran Phong , Tirosh Oren , Fary Camdon
Published: April 2019

The aim of this review was to determine the prevalence of patient-reported outcome measures concerning outcomes of arthroscopic hip surgery. The PubMed database was comprehensively reviewed in March 2016 using the key terms “hip” and “arthroscopy.” A total of 192 eligible studies were identified. The most commonly used patient-reported outcome measures were the modified Harris Hip score (61%) and the Non-arthritic Hip Score (27%). Seventy-one percent of total patient-reported outcome measures articles were published between 2011 and 2015. The modified Harris Hip score, Nonarthritic Hip Score, and Hip Outcome Score remain the most commonly used patient-reported outcome measures in studies concerning outcomes of hip arthroscopy, and this has increased in the past 5 years. [
Orthopedics.
2019; 42(3):e305–e308.]
A distributional study of negated adjectives and antonyms
Authors: Aina Laura , Bernardi Raffaella , Fernández Raquel
Published: April 2019

In this paper, we investigate the relation between negated adjectives and antonyms in English using Distributional Semantics methods. Results show that, on the basis of contexts of use, a negated adjective (e.g., not cold) is typically more similar to the adjective itself (cold) than to its antonym (hot); such effect is less strong for antonyms derived by affixation (e.g., happy - unhappy).
Neural Surface Realization for Italian
Authors: Basile Valerio , Mazzei Alessandro
Published: April 2019

We present an architecture based on neural networks to generate natural language from unordered dependency trees. The task is split into the two subproblems of word order prediction and morphology inflection. We test our model gold corpus (the Italian portion of the Universal Dependency treebanks) and an automatically parsed corpus from the Web.
DARC-IT: a DAtaset for Reading Comprehension in Italian
Authors: Brunato Dominique , Valeriani Martina , Dell’Orletta Felice
Published: April 2019

In this paper, we present DARC-IT, a new reading comprehension dataset for the Italian language aimed at identifying ‘question-worthy’ sentences, i.e. sentences in a text which contain information that is worth asking a question about1. The purpose of the corpus is twofold: to investigate the linguistic profile of question-worthy sentences and to support the development of automatic question generation systems.
An efficient Trie for binding (and movement)
Authors: Chesi Cristiano
Published: April 2019

Non-local dependencies connecting distant structural chunks are often modeled using (LIFO) memory buffers (see Chesi 2012 for a review). Other solutions (e.g. slash features in HPSG, Pollard & Sag 1994) are not directly usable both in parsing and in generation algorithms without undermining an incremental left-right processing assumption. Memory buffers are however empirically limited and psycholinguistically invalid (Nairne 2002). Here I propose to adopt Trie memories instead of stacks. This leads to simpler and more transparent solutions for establishing non-local dependencies both for wh- argumental configurations and for anaphoric pronominal coreference.
Generalizing Representations of Lexical Semantic Relations
Authors: Chingacham Anupama , Paperno Denis
Published: April 2019

We propose a new method for unsupervised learning of embeddings for lexical relations in word pairs. The model is trained on predicting the contexts in which a word pair appears together in corpora, then generalized to account for new and unseen word pairs. This allows us to overcome the data sparsity issues inherent in existing relation embedding learning setups without the need to go back to the corpora to collect additional data for new pairs.
Grammatical class effects in production of Italian inflected verbs
Authors: De Martino Maria , Mancuso Azzurra , Laudanna Alessandro
Published: April 2019

We report a picture-word interference (PWI) experiment conducted in Italian where target verbs were used to name pictures in presence of semantically related and unrelated distracters. The congruency of grammatical class between targets and distracters was manipulated and nouns and verbs were used as distracters. Consistently with previous studies, an expected semantic interference effect was observed but, interestingly, such an effect does not equally apply to target-distracter pairs sharing or not grammatical class information. This outcome seems to corroborate the hypothesis of the intervention of grammatical constraints in word production as explored in the PWI task.
Integrating Terminology Extraction and Word Embedding for Unsupervised Aspect Based Sentiment Analysis
Authors: Dini Luca , Curtoni Paolo , Melnikova Elena
Published: April 2019

In this paper we explore the advantages that unsupervised terminology extraction can bring to unsupervised Aspect Based Sentiment Analysis methods based on word embedding expansion techniques. We prove that the gain in terms of F-measure is in the order of 3%.
The iDAI.publication: extracting and linking information in the publications of the German Archaeological Institute (DAI)
Authors: Mambrini Francesco
Published: April 2019

We present the results of our attempt to use NLP tools in order to identify named entities in the publications of the Deutsches Archäologisches Institute (DAI) and link the identified locations to entries in the iDAI.gazetteer. Our case study focuses on articles written in German and published in the journal Chiron between 1971 and 2014. We describe the annotation pipeline that starts from the digitized texts published in the new portal of the DAI. We evaluate the performances of geoparsing and NER and test an approach to improve the accuracy of the latter.
Source-driven Representations for Hate Speech Detection
Authors: Merenda Flavio , Zaghi Claudia , Caselli Tommaso , Nissim Malvina
Published: April 2019

Sources, in the form of selected Facebook pages, can be used as indicators of hate-rich content. Polarized distributed representations created over such content prove superior to generic embeddings in the task of hate speech detection. The same content seems to carry a too weak signal to proxy silver labels in a distant supervised setting. However, this signal is stronger than gold labels which come from a different distribution, leading to re-think the process of annotation in the context of highly subjective judgments.
Advances in Multiword Expression Identification for the Italian language: The PARSEME shared task edition 1.1
Authors: Monti Johanna , Cordeiro Silvio Ricardo , Ramisch Carlos , Sangati Federico , Savary Agata , Vincze Veronika
Published: April 2019

This contribution describes the results of the second edition of the shared task on automatic identification of verbal multiword expressions, organized as part of the LAW-MWE-CxG 2018 workshop, co-located with COLING 2018, concerning both the PARSEME-IT corpus and the systems that took part in the task for the Italian language. The paper will focus on the main advances in comparison to the first edition of the task.
PARSEME-IT
Authors: Monti Johanna , Caruso Valeria , Buono Maria Pia di
Published: April 2019

The second edition of the PARSEME shared task was based on new guidelines and methodologies that particularly concerned the Italian language with the introduction of new categories of verbs not considered in the previous edition. This contribution presents the novelties introduced, the results obtained and the problems that emerged during the annotation process and concerning some categories of verbs.
Online Neural Automatic Post-editing for Neural Machine Translation
Authors: Negri Matteo , Turchi Marco , Bertoldi Nicola , Federico Marcello
Published: April 2019

Machine learning from user corrections is key to the industrial deployment of machine translation (MT). We introduce the first on-line approach to automatic post-editing (APE), i.e. the task of automatically correcting MT errors. We present experimental results of APE on English-Italian MT by simulating human post-edits with human reference translations, and by applying online APE on MT outputs of increasing quality. By evaluating APE on generic vs. specialised and static vs. adaptive neural MT, we address the question: At what cost on the MT side will APE become useless?
Tint 2.0: an All-inclusive Suite for NLP in Italian
Authors: Aprosio Alessio Palmero , Moretti Giovanni
Published: April 2019

In this we paper present Tint 2.0, an open-source, fast and extendable Natural Language Processing suite for Italian based on Stanford CoreNLP. The new release includes some improvements of the existing NLP modules, and a set of new text processing components for fine-grained linguistic analysis that were not available so far, including multi-word expression recognition, affix analysis, readability and classification of complex verb tenses.
MEDEA: Merging Event knowledge and Distributional vEctor Addition
Authors: Pannitto Ludovica , Lenci Alessandro
Published: April 2019

The great majority of compositional models in distributional semantics present methods to compose distributional vectors or tensors in a representation of the sentence. Here we propose to enrich the best performing method (vector addition, which we take as a baseline) with distributional knowledge about events, outperforming our baseline.
LatInfLexi: an Inflected Lexicon of Latin Verbs
Authors: Pellegrini Matteo , Passarotti Marco
Published: April 2019

We present a paradigm-based inflected lexicon of Latin verbs built to provide empirical evidence supporting an entropy-based estimation of the degree of uncertainty in inflectional paradigms. The lexicon contains information on the inflected forms that occupy the 254 morphologically possible paradigm cells of 3,348 verbal lexemes extracted from a frequency lexicon of Latin. The resource also includes annotation of vowel length and the frequency of each form in different epochs.
Bootstrapping Enhanced Universal Dependencies for Italian
Authors: Simi Maria , Montemagni Simonetta
Published: April 2019

The paper presents an extension of the Italian Universal Dependencies Treebank with an “enhanced” representation level (e-IUDT), aimed at simplifying the information extraction process. The modules developed to semi-automatically build e-IUDT were delexicalized to perform cross-language enhancements: preliminary experiments in this direction led to promising results.
Analysing the Evolution of Students’ Writing Skills and the Impact of Neo-standard Italian with the help of Computational Linguistics
Authors: Sprugnoli Rachele , Tonelli Sara , Aprosio Alessio Palmero , Moretti Giovanni
Published: April 2019

We present a project aimed at studying the evolution of students’ writing skills in a temporal span of 15 years (from 2001 to 2016), analysing in particular the impact of neo-standard Italian. More than 2,500 essays have been transcribed and annotated by teachers according to 28 different linguistic traits. We present here the annotation process together with the first data analysis supported by NLP tools.
Arretium or Arezzo? A Neural Approach to the Identification of Place Names in Historical Texts
Authors: Sprugnoli Rachele
Published: April 2019

This paper presents the application of a neural architecture to the identification of place names in English historical texts. We test the impact of different word embeddings and we compare the results to the ones obtained with the Stanford NER module of CoreNLP before and after the retraining using a novel corpus of manually annotated historical travel writings.
Multi-source Transformer for Automatic Post-Editing
Authors: Tebbifakhr Amirhossein , Agrawal Ruchit , Negri Matteo , Turchi Marco
Published: April 2019

Recent approaches to the Automatic Post-editing (APE) of Machine Translation (MT) have shown that best results are obtained by neural multi-source models that correct the raw MT output by also considering information from the corresponding source sentence. In this paper, we pursue this objective by exploiting, for the first time in APE, the Transformer architecture. Our approach is much simpler than the best current solutions, which are based on ensembling multiple models and adding a final hypothesis re-ranking step. We evaluate our Transformer-based system on the English-German data released for the WMT 2017 APE shared task, achieving results that outperform the state of the art with a simpler architecture suitable for industrial applications.
Universidade e Escola Básica: experiências de pesquisa colaborativa na formação continuada de professores/as
Authors: Jardilino José Rubens Lima , Diniz Margareth
Published: April 2019

Este artigo aborda a questão da formação continuada de professores por meio da pesquisa, tendo como referência a relação universidade-escola na perspectiva da formação do professor pesquisador e sujeito do seu desenvolvimento profissional docente (DPD). Utilizou-se como metodologia a abordagem colaborativa por meio de narrativas e conversação. As unidades de análise expostas no texto são excertos de narrativas de professores participantes de duas pesquisas de longa duração (2014-2017), realizadas com três universidades no projeto em rede Observatório da Educação – OBEDUC/Capes e Observatório da Pesquisa Educacional da Região dos Inconfidentes – OBERI, com apoio da FAPEMIG. Dentre os vários aportes colhidos nas pesquisas, destacou-se a possibilidade dos docentes ressignificarem o DPD, considerando os processos subjetivos, fomentados por novas práticas de formação, com atenção para aspectos que contribuam especialmente para as ideias de autogestão da escola, de cidadania, dos direitos das pessoas participarem dos processos de decisão e de seu próprio processo de formação, a partir da lógica da implicação do sujeito.
The Exploitation of Polymer Based Nanocomposites for Additive Manufacturing: A Prospective Review
Authors: Khan Imran , Kamma-Lorger Christina S. , Mohan Saeed D. , Mateus Artur , Mitchell Geoffrey R.
Published: April 2019

Additive manufacturing (AM) is a well-known technology for making real three dimensional objects, based on metal, ceramic and plastic material used for various applications. The aim of this review is to explore and offer an insight in to the state of the art polymer based nanocomposites in to additive manufacturing applications. In context to this, the developing efforts and trends in nanocomposites development particularly for additive manufacturing processes were studied and summed up. The scope and limitations of nanocomposites into Stereolithography, selective laser sintering and fused deposition modeling was explored and highlighted. The review highlights widely accepted nanoparticles for range of applications including mechanical, electrical, flame retardance and crossing over into more biological with the use of polymer matrices. Acquisition of functional parts with limitations in regard to printing is highlighted. Overall, the review highlights successes, limitations and opportunities that the union of AM and polymer based nanocomposites can bring to science and technology.
Innovation and Entrepreneurship: From Schumpeter to Industry 4.0
Authors: Ferreira Vitor , Lisboa Ana
Published: April 2019

Innovation is key to firms’ competitive advantage, performance, and growth. In this paper we try to briefly link the concepts of Innovation and Entrepreneurship with the emergence of a new industrial revolution that has been labeled as “Industry 4.0”, showing that as in the past a set of innovation are the main drivers for the change of the technical and social paradigm. We summarize a number of concepts to show that the key drivers of competitiveness are Innovation and Entrepreneurship.
Polyethylene and the Nucleating Agent: Dibenzylidene Sorbitol, a Neutron Scattering Study
Authors: Mitchell Geoffrey R. , Pratumshat Supatra , Olley Robert
Published: April 2019

Dibenzylidene Sorbitol is a very effective clarification additive for isotactic polypropylene. It is not effective with polyethylene although recent studies have shown that it can act as an effective nucleating and directing agent. We employ small-angle neutron scattering measurements to more fully understand the behavior of dibenzylidene sorbitol in a polyethylene matrix. The small-aangle neutron scattering clearly shows that the disappearance of the DBS fibrils is concentration dependent and for 2% DBS the midpoint of the dissolution is at 145°C and for 1% is ~ 20°C lower
Direct Digital Manufacturing in the Context of a Circular Economy
Authors: Fonseca Diana A. , Simões Fábio J.P.
Published: April 2019

Additive manufacturing technologies have evolved from prototype to part production. Coupling this shift with organizational transformations evolved rapid prototyping industry into Direct Digital Manufacturing (DDM) industry. Any evolution in production systems is now, more than ever before, dependent on sustainability principles. The development of the DDM industry must be guided by these principles, taking the chance it offers to change the production paradigm. Circular Economy (CE) is a shift in the production and resource management model, and one of the ways to work towards sustainability. Coupling DDM with CE principles is thus contributing to change industrial production to a more sustainable one. This paper intends to relate DDM technologies with CE principles, to identify aspects where DDM is contributing to CE, as well as aspects that should be explored further for that purpose. It is observed that DDM can enable optimization of material and energy usage, modify logistics towards de-localized production and recycling and enable prolonged lifespan of products through better access to spare parts, for instance. It is also observed that DDM has good potential to shift materials usage towards natural materials, especially in a context of consumer or local community production, but not so much within the current industrial context. Education is shown to play a pivotal role, since incorporating circular economy principles in educational contexts should spark a shift in consumer perspectives, modifying demand and hence, industrial production.
Evaluation of Root Canal Filling with a Bioceramic Sealer Using Micro-Computed Tomography: A Pilot Study
Authors: Vasconcelos Isabel , Pereira Mário Rito , Ginjeira António , Franco Margarida C. , Morouço Pedro , Alves Nuno
Published: April 2019

This pilot study aims to define a protocol for optimizing the micro-computed tomography (micro-CT) settings to evaluate in the future research the root canal filling in oval shaped canals. Thirty distal canals of mandibular molars were used. After preparation of the canals, the roots were randomly divided into five groups. The canals were filled with two types of sealers (Endosequence BC Sealer or AH Plus) and two types of gutta percha (Protaper Next cones and Endosequence BC cones), using thermal obturation in comparison with a single cone obturation technique. Each specimen was scanned three times using a micro-CT device at a resolution of 30,1 μm. The first scan was done for selecting the specimen according the inclusion criteria, the second one post-instrumentation and the last micro-CT scan after obturation the specimens. For the present study, the images were only evaluated with qualitative criteria and the settings for acquisition, reconstruction and analysis of micro-CT images were tested.
Towards a Conceptual Notion for a Universal Printing Machine
Authors: Martins-Ferreira Nelson , Alves Nuno , Mitchell Geoffrey R.
Published: April 2019

This work is concerned with 3D printing. It's main goal is to establish a conceptualsetting in which the theory of 3D printing can be developed. Following the analogy that aUniversal Turing Machine, in a veryprecise and specific way, computes everything that is computable, we propose to the development for the notion of a Universal PrintingMachine. It is an abstract notion that will simulate any 3d printer, either in existence or to be invented. In theory, it canproduce anything which can be printed. In other words, we areproposing to develop a theoretical model of a 3d printer which will serveas a reference to the current and future developments in the area.