bluuebunny/crossref_metadata_2025_split huggingface dataset:
Cyberbullying Sentiment Analysis with Word2Vec and One-Against-All Support Vector Machine
Authors: Halim Lionel Reinhart , Suryadibrata Alethea 
Published: June 2021

Depression and social anxiety are the two main negative impacts of cyberbullying. Unfortunately, a survey conducted by UNICEF on 3rd September 2019 showed that 1 in 3 young people in 30 countries had been victims of cyberbullying. Sentiment analysis research will be conducted to detect a comment that contains cyberbullying. Dataset of cyberbullying is obtained from the Kaggle website, named, Toxic Comment Classification Challenge. The pre-processing process consists of 4 stages, namely comment generalization (convert text into lowercase and remove punctuation), tokenization, stop words removal, and lemmatization. Word Embedding will be used to conduct sentiment analysis by implementing Word2Vec. After that, One-Against-All (OAA) method with the Support Vector Machine (SVM) model will be used to make predictions in the form of multi labelling. The SVM model will go through a hyperparameter tuning process using Randomized Search CV. Then, evaluation will be carried out using Micro Averaged F1 Score to assess the prediction accuracy and Hamming Loss to assess the numbers of pairs of sample and label that are incorrectly classified. Implementation result of Word2Vec and OAA SVM model provide the best result for the data undergoing the process of pre-processing using comment generalization, tokenization, stop words removal, and lemmatization which is stored into 100 features in Word2Vec model. Micro Averaged F1 and Hamming Loss percentage that is produced by the tuned model is 83.40% and 15.13% respectively.

Index Terms— Sentiment Analysis; Word Embedding; Word2Vec; One-Against-All; Support Vector Machine; Toxic Comment Classification Challenge; Multi Labelling
Peningkatan Kemampuan Menulis Karya Ilmiah Menggunakan Media Video Faststone di Masa Pandemi COVID-19
Authors: Darmuki Agus , Hariyadi Ahmad , Hidayati Nur Alfin 
Published: June 2021

Penelitian ini bertujuan untuk memperoleh deskripsi tentang peningkatan keaktifan dan hasil belajar Mahasiswa dalam pembelajaran menulis karya ilmiah menggunakan media faststone di masa pandemic covid – 19 pada Mahasiswa Prodi PGSD FKIP Universitas Terbuka Surakarta Tahun Akademik 2020.1. Jenis penelitian ini adalah Penelitian Tindakan Kelas dengan dua siklus yang terdiri dari dua kali pertemuan dalam satu siklus. Setiap siklus terdiri dari perencanaan, pelaksanaan, observasi, dan refleksi. Teknik analisis data dalam penelitian ini menggunakan teknik triangulasi data yang terdiri dari (1) pengumpulan data; (2) reduksi data; (3) penarikan simpulan terhadap data berupa dokumen hasil pekerjaan Mahasiswa dan daftar nilai. Hasil penelitian ini menunjukkan bahwa pembelajaran menulis karya ilmiah pada siklus I ke siklus II terdapat peningkatan, pada siklus I jumlah Mahasiswa yang mendapat nilai tuntas adalah 20 Mahasiswa atau 71 %, nilai tidak tuntas pada siklus I adalah 8 Mahasiswa atau 29 %, sedangkan pada siklus 2 terjadi peningkatan nilai tuntas yaitu menjadi 23 Mahasiswa atau 82% . Kesimpulan penelitian ini pembelajaran menulis karya ilmiah menggunakan media Faststone dapat meningkatkan hasil belajar dan keaktifan Mahasiswa I A Prodi PGSD UT Surakarta.
Peningkatan Kemampuan Berbahasa (Berbicara) Anak Usia 3 – 4 Tahun Dengan Media Kartu Gambar
Authors: Kartini Kartini 
Published: June 2021

Penelitian ini bertujuan untuk meningkatkan kemampuan Bahasa ( Bicara ) pada anak KB Al Furqon Makamhaji Kartasura Tahun Ajaran 2020/2021 dengan penerapan pengunaan gambar pada pembelajaran (kegiatan inti). Subjek penelitian yang diberi tindakan adalah anak-anak KB Al Furqon Makamhaji Kartasura yang berjumlah 20 anak, subjek pelaku tindakan adalah peneliti (guru). Metode pengumpulan data dengan menggunakan metode observasi, wawancara, dan dokumentasi. Teknik analisis data yang digunakan dengan menggunakan deskriptif dan komparatif. Hasil penelitian menunjukkan bahwa adanya peningkatan kemampuan bahasa ( bicara )pada anak yang dilihat dari peningkatan rata-rata kelas mulai dari prasiklus sampai siklus II, yang mencakup: Prasiklus 31, 96%, siklus I 62, 13%, dan siklus II 82, 67%. Kesimpulan penelitian ini adalah bahwa penerapan pengunaan kartu gambar dapat meningkatkan kemampuan bahasa (bicara) anak Kelompok Bermain Al Furqon Makamhaji Kartasura Tahun Pelajaran 2020/2021.
Non-invasive electrical brain stimulation for vision restoration after stroke: An exploratory randomized trial (REVIS)
Authors: Räty Silja , Borrmann Carolin , Granata Giuseppe , Cárdenas-Morales Lizbeth , Schoenfeld Ariel , Sailer Michael , Silvennoinen Katri , Holopainen Juha , De Rossi Francesca , Antal Andrea , Rossini Paolo M. , Tatlisumak Turgut , Sabel Bernhard A. 
Published: June 2021

Background: Occipital strokes often cause permanent homonymous hemianopia leading to significant disability. In previous studies, non-invasive electrical brain stimulation (NIBS) has improved vision after optic nerve damage and in combination with training after stroke. Objective: We explored different NIBS modalities for rehabilitation of hemianopia after chronic stroke. Methods: In a randomized, double-blinded, sham-controlled, three-armed trial, altogether 56 patients with homonymous hemianopia were recruited. The three experiments were: i) repetitive transorbital alternating current stimulation (rtACS, n = 8) vs. rtACS with prior cathodal transcranial direct current stimulation over the intact visual cortex (tDCS/rtACS, n = 8) vs. sham ( n = 8); ii) rtACS ( n = 9) vs. sham ( n = 9); and iii) tDCS of the visual cortex ( n = 7) vs. sham ( n = 7). Visual functions were evaluated before and after the intervention, and after eight weeks follow-up. The primary outcome was change in visual field assessed by high-resolution and standard perimetries. The individual modalities were compared within each experimental arm. Results: Primary outcomes in Experiments 1 and 2 were negative. Only significant between-group change was observed in Experiment 3, where tDCS increased visual field of the contralesional eye compared to sham. tDCS/rtACS improved dynamic vision, reading, and visual field of the contralesional eye, but was not superior to other groups. rtACS alone increased foveal sensitivity, but was otherwise ineffective. All trial-related procedures were tolerated well. Conclusions: This exploratory trial showed safety but no main effect of NIBS on vision restoration after stroke. However, tDCS and combined tDCS/rtACS induced improvements in visually guided performance that need to be confirmed in larger-sample trials. NCT01418820 (clinicaltrials.gov)
Validation of a clinical blood-based decision aid to guide immunotherapy treatment in patients with non-small cell lung cancer
Authors: Muller Mirte , Hoogendoorn Roland , Moritz Ruben J.G. , van der Noort Vincent , Lanfermeijer Mirthe , Korse Catharina M. , van den Broek Daan , ten Hoeve Jelle J. , Baas Paul , van Rossum Huub H. , van den Heuvel Michel M. 
Published: June 2021

BACKGROUND: The widespread introduction of immunotherapy in patients with advanced non-small cell lung cancer (NSCLC) has led to durable responses but still many patients fail and are treated beyond progression. OBJECTIVE: This study investigated whether readily available blood-based tumor biomarkers allow accurate detection of early non-responsiveness, allowing a timely switch of therapy and cost reduction. METHODS: In a prospective, observational study in patients with NSCLC treated with nivolumab or pembrolizumab, five serum tumor markers were measured at baseline and every other week. Six months disease control as determined by RECIST was used as a measure of clinical response. Patients with a disease control <  6 months were deemed non-responsive. For every separate tumor marker a criterion for predicting of non-response was developed. Each marker test was defined as positive (predictive of non-response) if the value of that tumor marker increased at least 50% from the value at baseline and above a marker dependent minimum value to be determined. Also, tests based on combination of multiple markers were designed. Specificity and sensitivity for predicting non-response was calculated and results were validated in an independent cohort. The target specificity of the test for detecting non-response was set at >  95%, in order to allow its safe use for treatment decisions. RESULTS: A total of 376 patients (training cohort: 180, validation cohort: 196) were included in our analysis. Results for the specificity of the single marker tests in the validation set were CEA: 98·3% (95% CI: 90·9–100%), NSE: 96·5% (95% CI: 87·9–99·6%), SCC: 96·5% (95% CI: 88·1–99·6%), Cyfra21·1 : 91.8% (95% CI: 81·9–97·3%), and CA125 : 86·0% (95% CI: 74·2–93·7%). A test based on the combination of Cyfra21.1, CEA and NSE accurately predicted non-response in 32.3% (95% CI 22.6–43.1%) of patients 6 weeks after start of immunotherapy. Survival analysis showed a significant difference between predicted responders (Median PFS: 237 days (95% CI 184–289 days)) and non-responders (Median PFS: 58 days (95% CI 46–70 days)) ( p <  0.001). CONCLUSIONS: Serum tumor marker based tests can be used for accurate detection of non-response in NSCLC, thereby allowing early and safe discontinuation of immunotherapy in a significant subset of patients.
Antifungal Activity of Essential Oils of Leaves, Rhizomes Oils and Fraction Wild Ginger Elettariopsis Slahmong Ck Lim Inhibit The Colony Growth of Sclerotium Rolfsii
Authors: Nurmansyah Nurmansyah , Idris Herwita , Nasir Nasril 
Published: June 2021

This study aims to see the effectiveness of essential oils of leaves, rhizomes and fraction of wild ginger Ellettariopsis slahmong CK Lim against the pathogenic fungus Sclerotium rolfsii which causes rot disease of the stem base of peanut plants an in vitro.The study consisted of two sub activities: (a) inhibited of colony diameter using Patato Dextrosa Agar (PDA) medium and (b) inhibited of colony biomass using Potato dextrose Broth (PDB) medium, the treatments tested were leaf essential oil and rhizome of wild ginger and fractions A1, B2, C3 and D4, with concentration levels (0, 100, 250 and 500 ppm). Experiments (a) and (b) were arranged in the form of a Completely Randomized Design (CRD) in factorial each with 4 replications. The results showed that the leaf essential oil and rhizome of wild ginger and its fractions had the potential to be used as a vegetable fungicide. The A1 fraction has the best antifungal effectiveness compared to the B2 fraction, leaf oil, rhizomes and other fractions, with the highest inhibition of diameter and biomass of S rolfsii colony the 49.47% and 51.46%. Essential oils of leaves and rhizome oil are not statistically significantly different, but in numerically leaf oil are better than rhizome oil. The C3 fraction showed the lowest colony diameter inhibition and biomass of 34.70% and 36.95%. The best concentration level in inhibition the growth of S rolfsii mushroom is 500 ppm, with inhibition of the diameter and biomass of the colony by 81.74% and 84.25%.
Stability and Toxicity Test of Angkak Pigment Powder from Sago Hampas- Rice Flour Substrate as Natural Dyes
Authors: Putra Dian Pramana , Novelina Novelina , Asben Alfi 
Published: June 2021

Sago hampas is waste from processing sago starch. Sago hampas is generally thrown away without any further treatment. Sago hampas contain nutrients that can be used as a substrate for fermentation of angkak. The study aims to determine the stability and toxicity of angkak pigment powder from sago hampas-rice flour substrate. The study used exploratory research design through experiments in the laboratory. This study used the UV-vis spectrophotometer method in observing the stability of the Angkak powder pigment and the brine shrimps method of angkak pigment powder toxicity test. The results showed that the level of solubility of angkak pigment powder will increase at higher temperatures. Stability of angkak pigment powder tends to decrease with longer heating, the higher of heating temperature and the longer of irradiation. Angkak pigment powder are more stable at neutral and alkaline pH compared with acidic pH. And it is not toxic to experimental animals with LC50 value of angkak pigment powder of 2,897.05 ppm. The conclusion of this study is that temperature affects the intensity of the angkak pigment. Angkak is unstable along with heating time, heating temperature and longer of irradiation.
La pregunta: elemento de aprendizaje (ensayo)
Authors: López Velas Lenin Eduardo 
Published: June 2021

El fenómeno educativo presenta diversas aristas para su análisis y ha sido objeto de numerosas discusiones que competen, de cierta manera, a cada uno de los ciudadanos en una sociedad. En torno a lo que representa la enseñanza y el aprendizaje, emerge un elemento sustantivo, el cual descansa en la importancia de una pedagogía de la pregunta que permita a los alumnos de educación primaria potenciar sus saberes y generar una reflexión sobre la práctica docente. El presente ensayo se apoya en dos afirmaciones: la primera sostiene que incentivar a los alumnos de educación primaria a plantearse preguntas abiertas potenciadoras de aprendizaje permite que den significado a lo que aprenden. La segunda afirmación parte del carácter sustancial que tiene el planteamiento de preguntas abiertas potenciadoras de aprendizaje, ya que en este se encuentra inmerso el acto de filosofar.
Filosofía de la historia en el pensamiento posmodernista
Authors: Mateo Mejía Luis Gabriel , Díaz Navarro Silvia Andreli 
Published: June 2021

En el siguiente artículo, se plantean las líneas de la filosofía de la historia, a través del balance que hacen pensadores posmodernos sobre la filosofía de la historia contemporánea. Dichas líneas, representan los parámetros, que a futuro, definirán los metarrelatos históricos, como aspectos genuinos y científicos, que contribuyen a formar una visión más completa del ser y sentir de la civilización occidental.
El problema del sentido a partir de la novela Crónica del pájaro que da cuerda al mundo de Haruki Murakami: Una mirada desde Gilles Deleuze
Authors: Almeyda Sarmiento Juan David 
Published: June 2021

El presente escrito propone una lectura de la propuesta de Gilles Deleuze en lo correspondiente al sentido, en tanto que extra ser que subsiste y persiste en la superficie de las cosas y los estados de cosas, en la novela Crónica del pájaro que da cuerda al mundo de Haruki Murakami. Lo anterior, a fin de explicar, desde el autor francés, un elemento fundamental de la novela de Murakami, el sentido. Este último, se propone como una entidad que no debe reducirse a una mera esencia unificada y preexistente; sino, que debe ser pensado como una multiplicidad que constantemente deviene. Esta lectura deleuziana, permite una aproximación a la forma en que entendemos el mundo en relación con nuestro lenguaje y, a su vez, cómo con este lenguaje que nos relaciona con el mundo tenemos la posibilidad de crear una posibilidad abierta de sentidos más allá de la simple asociación de cosas con sus propiedades específicas.
Reconstrucción del proyecto filosófico de Fernando González: una mirada a la relación entre literatura y filosofía
Authors: Salazar Achig Jhonatan Mauricio 
Published: June 2021

En este artículo nos proponemos adentrarnos en el proyecto filosófico del pensador colombiano Fernando González, con el objetivo de comprender la actualidad de su pensamiento. Para ello nos proponemos dos cosas: por un lado, hacer explícita la importancia que tuvo Friedrich Nietzsche en la configuración de su pensamiento, específicamente en la creación de sus conceptos a partir de la reapropiación de varias concepciones filosóficas nietzscheanas. Por otro, tratar de precisar cuál es la originalidad de la propuesta filosófica de González y cómo esto depende de una articulación entre filosofía y literatura.
En procura de cumplir estos objetivos cuatro son los rumbos que se propone seguir: primero, se caracterizará el concepto de filosofía que atraviesa el pensamiento de González, a través de la comprensión y explicación de la compleja relación que tiene lugar entre vida del pensador y su filosofía. Segundo, caracterizar el diálogo que existe entre los conceptos de González y las concepciones filosóficas nietzscheanas de lo dionisíaco, la voluntad de poder, el superhombre, entre otras. En tercer lugar, explorar la propuesta original de su filosofía que parte de la relación estrecha entre filosofía y literatura. Y finalmente realizar la reconstrucción de su filosofía, enfocado en sus modelos discursivos y en el papel de la estética como un modo de existencia. A lo largo de este trabajo se irá revelando la reconstrucción de su pensamiento con enfoque en la filosofía, sus problemas, sus conceptos, su discurso y su interpretación actual.
COMPUTER BASED ASSESSMENT SYSTEM FOR EVALUATING SUBJECTIVE QUESTIONS
Authors: Evwiekpaefe Abraham Eseoghene , Muhammad Yahya Umar 
Published: June 2021

With the increase in the number of students in our tertiary institutions coupled with the number of courses offered in the various universities, the management of examination processes has become more complex in terms of resources, time and manpower. This has resulted to the rapid adoption of a computerized means of conducting examinations instead of the traditional pen and paper. However, this computer-based technique currently used in our tertiary institutions in assessing students’ examination handles only the multiple choice questions (MCQ). This paper therefore is aimed at designing and implementing a simplified algorithm that assesses subjective (descriptive) type questions. Keyword and synonym matching techniques were used as the method for creating the simplified algorithm for the assessment of the subjective answers. The algorithm was designed using the Unified Modeling Language. The application was built in the NetBeans IDE version 8.2 with Java as the main programming language. Spring Boot Framework with Thymeleaf View Engine was used as the Web development Framework. MySQL was used for the database while HTML, CSS and JavaScript were used for building the web page interface. For the synonyms, grammar and spell checking, Merriam-Webster Dictionary API and Language Tool API were used. A prototype system was consequently developed, tested and various results shown.
In Vitro plant regeneration from leaf explants of Tagetes erecta L.
Authors: Munshi JL , Baksha R , Rahaman MZ , Huque NN , Zinat EA , Momtaz N 
Published: June 2021

Regeneration of multiple shoots via callus induction and organogenesis was obtained from young leaf explants of the field grown marigold (Tagetes erecta L.). Callus induction and shoot regeneration at various frequencies were observed using different concentrations and combinations of growth regulators. Highest percentage (90%) of callus formation was observed within two weeks on MS medium supplemented with 5.0 mg/l BAP with 2.5 mg/l NAA. The maximum percentage (80%) of shoot bud formation (10±0.5/callus) was obtained from MS medium containing 1.0 mg/l BAP with 0.5 mg/l kinetin. The regenerated shoots developed highest percentages (90%) of roots on half strength MS medium supplemented with 1.0 mg/l IBA. The plantlets when transferred into potsoil 80% survived. Regenerated plants were morphologically uniform with normal leaf shape and growth pattern.
Bangladesh J. Sci. Ind. Res.56(2), 69-74, 2021
Titanium dioxide nanoparticle incorporated PVDF-HFP based composite membrane for direct methanol fuel cells application
Authors: Karim MA 
Published: June 2021

Two composite polymeric membranes were synthesized using poly vinylidene fluoride-hexafluoroprropylene (PVDF-HFP) host in polyvinyl alcohol and with or without TiO2 nanoparticlesas a porous substrate. The structure of the membranes was PDVF-HFP/PVA and PVDF-HFP/PVA/TiO2.The composition of the synthesized membranes was analyzed by FTIR spectrum.The porosity of the polymer membranes were measured by immersing the membranes into n-butanol. The conductivity of the composite membranes was determined by impedance spectroscopy and the methanol permeability of the membranes was obtained from diffusion experiments. The surface morphology images were investigated by scanning electron microscope(SEM). The SEM image of the composite membrane incorporated with TiO2 has many pores which increased the conductivity of the membrane as compared to non TiO2 incorporated one. The composite membrane with TiO2 showed a good balance between proton conductivity and methanol permeability. The cell with PVDF-HFP/PVA/TiO2 composite membrane showed higher power density.
Bangladesh J. Sci. Ind. Res.56(2), 125-132, 2021
Self microemulsifying powder using Aerosil as a carrier
Authors: Arju N , Bara PK , Amin MT , Bhowmik DR , Hossain MS 
Published: June 2021

This investigation highlighted the development of a solid self micro emulsifying drug delivery system (solid SMEDDS) for improved oral delivery of Valsartan. Liquid SMEDDS were formulated and then the liquid formulation was transformed into free-flowing powder by adsorption on a solid carrier. Here the formulations were prepared in various ratios of the drug to the excipients. Various evaluation studies were performed. In-vitro release profiles of all formulations were evaluated. The concentration of the diffused drug was measured using a UV-visible spectrophotometer at λmax= 250 nm. The faster dissolution was exhibited by the formulations containing Avicel. The experimental results for prepared solid-SMEDDS showed the improved dissolution of the study drug in a short time. F-3 (Assay:77%; Dissolution: 51.7% after 45 min, 63% after 60 min) and F-4 (Assay:63%; Dissolution: 49.1% after 45 min, 67% after 60 min) showed better evaluation study and this two might be formulated in future. Thus, this study revealed the formulation solid-SMEDDS using Aerosil 200 as an adsorbent with the potential of enhancing the solubility, and dissolution rate of the drug.
Bangladesh J. Sci. Ind. Res.56(2), 141-146, 2021
Pattern of Contraceptive Used by Tribal Couples of Chattogram Hill Tract
Authors: Zafreen Farzana , Wahab Md Abdul , Razzak Md Abdur , Rahman Md Habibur 
Published: June 2021

Introduction: Chattogram hill tract is the least economically developed area of Bangladesh where, education and health care facilities are hard to reach. Pattern of contraceptive use depends on couples’ socio-cultural, education and economic condition.
Objective: To find out the pattern of contraceptive used by selected tribal couples of Guimara Upazila of Khagrachari District.
Materials and Methods: This descriptive cross-sectional study was conducted from October 2016 to March 2017 on 145 married women age ranging from 15 to 45 years reported to outpatient department of Border Guard Hospital, Guimara, Khagrachari were selected purposively after informed written consent. All the necessary data were collected in a pretested structured questionnaire by face to face interview.
Results: Among the 145 respondents highest 50.3% was in age group of 15-25 years. Respondents’ ethnicity was Marma 37.9%, Tripura 38.6% and Chakma 23.5%. Majority 52.4% of the respondents’ profession was farming, 68.3% was illiterate and 55.9% had monthly family income less than five thousand Taka. Only 39.3% respondents were using various types of contraceptives. Among the ethnic groups 47.1 Chakma, 39.3% Tripura and 34.5% Marma respondents were using contraceptives. Among the contraceptive user, 93% were using temporary methods and only 7% using permanent methods. Among the contraceptives users oral contraceptive pill (OCP) was highest 56.1% followed by condom 15.8% and injectable 8.8%. Respondents got information about contraceptives mostly from family planning workers 50.9% followed by relatives 19.3%.
Conclusion: Majority of the tribal couple of this study population were not using any contraceptives. Those couple were using contraceptives among them OCP was most common. Appropriate measure should be taken to increase the contraceptive use rate by tribal couples of Chattogram Hill Tracts.
JAFMC Bangladesh. Vol 15, No 2 (December) 2019: 158-160