bluuebunny/crossref_metadata_2025_split huggingface dataset:
Surgical aspects of treating a child with histiocytosis of the lungs
Authors: Stalmakhovich Viktor N. , Sapukhin Eduard V. , Li Igor B. , Kaygorodova Irina N. , Dmitrienko Anastasia P. , Ursulenko Elena V. , Dyukov Andrey A. 
Published: August 2019

Objective:to present a case of successful treatment of rare severe lung lesions in a child.Methods:the article analyzes the result of the treatment of lung histiocytosis in a child aged 4 years. The clinical manifestation of the disease began with an increase in the parotid lymph nodes, otitis, pneumonia, and rapidly progressive respiratory failure. On the roentgenogram, bulle transformation of both lungs was noted. The severity of the disease was complicated by bilateral pneumothorax, the formation of bronchopleural fistulas. Histiocytosis of the lungs from Langerhans cells (GCR) was determined morphologically when examining tissue taken at thoracoscopy. Endoscopically, the lung was without signs of inflammation, with multiple subpleural air cavities. The child underwent chemotherapy (vinblastine, prednisone), repeated drainage of the pleural cavity with recurrent intense pneumothorax. For health reasons, a longitudinal sternotomy was performed, total decortication of the costal pleura on both sides (mechanical pleurodesis), which contributed to subsequent fixation of the lung to the chest wall and prevention of recurrent total stressed pneumothorax. Twice developed limited pneumothorax was stopped by drainage and chemical pleurodesis.Results:Against the background of ongoing complex therapy (drainage of the pleural cavity, mechanical and chemical pleurodesis, chemo- and antibacterial therapy), the condition improved (clinically and radiographically). The child was discharged on day 152 of treatment. On the control MSCT of the lungs, eight months after discharge, there are minimal signs of bullous transformation, and the symptoms of pneumosclerosis of both lungs are moderate. There are no manifestations of pulmonary hypertension.Conclusion:verification of the diagnosis of pulmonary GLC is very difficult. The complex treatment requires the participation of a wide range of doctors, including a pediatric surgeon.
Towards effective and sustainable disaster risk management in Nepal: challenges and gaps
Authors: Tuladhar Ramesh Man 
Published: August 2019

Geo-hazards, dynamic Himalayan tectonics, high seismicity, predominant soft rock (argillaceous) formations, steep slopes, rugged (high elevation difference) terrain, when mistreated would trigger-disasters. These natural factors exacerbated by unplanned developments together with impacts of global climate change have further scaled-up disasters in Nepal. Common natural disasters in Nepal impacting the livelihoods of the people below poverty are: earthquakes, floods and landslides. The return period of former is longer (+/- 70 years)but catastrophic, e.g. Gorkha-earthquake, while latter ones are recurrent and chaotic.
Substantial efforts have been made on disaster risk reductions (DRR) both by the state and non-state organizations. Contributions from sectoral ministries led by the Ministry of Home Affairs are primarily focused to legal provisions, strategies and policies while the departments are mandated to implement sectoral activities through projects and programs. Post Gorkha-earthquake rescue and relief operations demonstrated an exemplary solidarity among national, bilateral and international organizations. Reconstruction works are rather slow and still being continued. Despite substantial DRR efforts, outcomes are not satisfactory to the desired extent, whether it is earthquake or are floods and landslides across the country as per media and public voices reported.
This paper aims to analyse some key questions towards effective and sustainable disaster risk management in Nepal against existing challenges and gaps in the backdrop of Sendai Framework for Disaster Risk Reduction (SFDRR) 2015-2030. A theory of change that would help improve effectiveness and sustainability of disaster risk management (DRM) in Nepal is envisioned and discussed
ANALISIS KUALITAS INSTRUMEN PENGUKURAN PEMAHAMAN KONSEP PERSAMAAN KUADRAT MELALUI TEORI TES KLASIK DAN RASCH MODEL
Authors: Perdana Sukma Adi 
Published: August 2019

Tujuan penelitian ini adalah untuk mendeskripsikan hasil perbandingan analisis kualitas instrumen pretest pengukuran pemahaman konsep melalui pendekatan teori tes klasik dan model Rasch ditinjau dari unsur validitas, reliabilitas, tingkat kesukaran, dan daya pembeda soal.
Penelitian ini merupakan penelitian kualitatif deskriptif. Data diperoleh melalui metode dokumentasi berupa 4 butir soal pretest pengukuran pemahaman konsep dan 28 lembar jawaban siswa kelas IX-3 Madrasah Tsanawiyah (MTs) Negeri Tanjungpinang dan diambil pada bulan April 2018. Selanjutnya data dianalisis melalui pendekatan teori tes klasik menggunakan bantuan program SPSS versi 23 dan model Rasch dengan software Winsteps.
Hasil penelitian menunjukkan kualitas instrumen pengukuran pemahaman konsep melalui pendekatan teori tes klasik berkualitas baik dari segi validitas sedangkan melalui model Rasch belum memiliki kualitas yang baik. Reliabilitas instrumen melalui pendekatan teori tes klasik (0,536) dan model Rasch (0,71) termasuk kategori sedang (cukup). Berdasarkan indeks tingkat kesukaran melalui pendekatakan teori tes klasik belum memiliki kualitas yang baik, sedangkan hasil analisis melalui model Rasch menunjukkan tingkat kesukaran yang beragam yaitu mudah, sulit dan sangat sulit. Daya pembeda soal instrumen pretest pemahaman konsep melalui analisis kedua pendekatan berkategori buruk.
Problems Faced by English Teachers of Lower Secondary Schools in Assessments
Authors: Nopita Dewi 
Published: August 2019

Dalam pengajaran Bahasa Inggris, guru memegang peranan penting dalam pencapaian tujuan pembelajaran. Kemampuan guru dalam merancang proses pembelajaran sangat berpengaruh terhadap tingkat pencapaian siswa. Agar dapat meengetahui tingkat capaian pembelajaran siswa, guru diharapkan untuk mempunyai kemampuan yang baik dalam merancang penilaian. Artikel ini bertujuan untuk memaparkan masalah-masalah yang dihadapi guru Sekolah Menengah Pertama (SMP) dalam merancang penilaian proses pembelajaran yang dilakukan oleh siswa, yang merupakan hasil penelitian. Adapun data penelitian diperoleh dari guru-guru Bahasa Inggris di SMPN 17 Bintan, SMPN 3 Bintan, SMPN 2 Bintan, dan SMPN 12 Bintan melalui pengamatan dan wawancara. Hasil penelitian menunjukkan bahwa guru-guru mata pelajaran Bahasa Inggris di Kabupaten Bintan benar-benar mengalami kesulitan dalam merancang penilaian terkait bentuk dan fokus penilaian.
In the world of teaching English as a foreign language, teachers do hold a pivotal role in achieving the learning goals. The teachers’ skill in designing their classroom instruction contributes to students’ level of learning achievements. To be able to see the students’ achievement in learning, English teachers are required to have knowledge and skill in designing the assessment. This article, derived from a research result, intends to explore secondary school English language teachers’ problems related to English language assessment. There were 4 lower secondary schools in Bintan regency involved as the subjects of the research: SMPN 17 Bintan, SMPN 3 Bintan, SMPN 2 Bintan, and SMPN 12 Bintan. The instruments of the research were observation and interview. Finally, it was found that English language teachers of secondary schools in Bintan regency had serious problems in designing English language assessments related to the forms and the focus of the assessment.
Keywords: Lower secondary school, English teachers, assessment
FOLKLOR KEPERCAYAAN RAKYAT MASYARAKAT MELAYU DI KABUPATEN BINTAN
Authors: Leoni Tessa Dwi , Indrayatti Wahyu 
Published: August 2019

AbstractThis is descreptive research aimed to describe beliefs in the Malay society in Bintan. The data of the study are oral informations derived from informen who are people indigenous Malay Bintan. The data were analyzed refering to folklore and Indonesian literary theory. The results of this study are: (1) belief of Malay people in Bintan related to the circle of human life; (2) belief of supernatural; (3) Beliefs of universe creation; and (4) the function of belief in the Society.Keywords: folklore, belief, Malay, Bintan
Abstrak
Penelitian ini bertujuan untuk mendeskripsikan folklor kepercayaan rakyat pada masyarakat Melayu di Kabupaten Bintan. Metode yang digunakan dalam penelitian ini adalah metode analisis deskriptif. Data dalam penelitian ini ialah tradisi lisan masyarakat Melayu di Kabupaten Bintan. Data bersumber dari masyarakat asli Melayu Kabupaten Bintan. Penelitian ini dirumuskan dengan teori folklor dan didukung oleh teori sastra Indonesia. Hasil penelitian ini berupa: (1) kepercayaan rakyat masyarakat berhubungan dengan lingkaran hidup manusia; (2) kepercayaan rakyat masyarakat mengenai alam gaib; (3) kepercayaan rakyat masyarakat mengenai terciptanya alam semesta dan dunia, dan (4) fungsi kepercayaan rakyat dalam kehidupan masyarakat.
Peningkatan Prestasi Belajar Ekonomi Dengan Penggunaan Strategi Tutor Sebaya Dan Snowball Throwing Pada Peserta Didik SMA N 15 Batam Tahun Pelajaran 2017/2018
Authors: Utami Wiji 
Published: August 2019

Abstrak
Dari pengamatan awal bahwa nilai peserta didik masih rendah yang disebabkan oleh beberapa faktor; baik faktor dari dalam maupun faktor dari luar, Dari faktor murid, ketersediaan sarana prasarana pendukung pembelajaran, faktor ekonomi siswa dll, diperoleh rata-rata awal baru mencapai nilai 68,41 dengan ketuntasan belajar 33,33%, peneliti berupaya mengganti metode konvensional menjadi metode yang konstruktivis menggunakan strategi tutor sebaya dan Snowball Throwing. Penelitian tindakan kelas yang dilakukan yang bertujuan untuk meningkatkan prestasi belajar siswa di kelas XI IPS 1 SMA N 15 Batam dilakukan dalam dua siklus dengan tahapan masing-masing mulai perencanaan, dilanjutkan dengan pelaksanaan, observasi dan refleksi. Setelah data dikumpulkan menggunakan tes dan dianalisis dengan analisis deskriptif, diperoleh peningkatan prestasi belajar pada siklus I menjadi 72,10 dengan ketuntasan belajar 48,72% dan pada siklus II sudah meningkat sesuai harapan yaitu rata-rata kelas yang dicapai 83,20 sudah melebihi KKM mata pelajaran 75 di sekolah ini dengan ketuntasan belajar 89,74% yang melebihi tuntutan indikator keberhasilan penelitian yaitu 85%. Kesimpulan yang bisa disampaikan adalah penggunaan strategi tutor sebaya dan Snowball Throwing dalam proses pembelajaran dapat meningkatkan prestasi belajar siswa.
Kata kunci : strategi tutor sebaya; snowball throwing; prestasi belajar

Abstract
This study is a classroom action research aiming to improve student achievement in the XI IPS 1 class of SMA N 15 Batam. The research was conducted in two cycles with each stage startingwith planning, followed by implementation, observation and reflection. Based on initial observation, students gained lower everage 68,41with 33,33% completeness. It caused by several factors; student, the availability of learning infrastructure, and also student economic condition etc,.Regarding that situation, Researcher attempt to replace the conventional method to Constructivist methods by using peer tutoring strategies and Snowball Throwing. Data was collected using tests and analyzed by descriptive analysis, the first cycle, the everage increasing to 72.10 with 48.72% learning completeness and in the second cycle had increased as expected, the class average achieved 83.20 had exceeded the KKM 75 subjects in this school with learning completeness 89.74% which exceeds the demands of the indicator of research success which is 85%. The conclusion that can be conveyed is the use of peer tutoring strategies and Snowball Throwing in the learning process can improve student learning achievement.
Keywords : peer tutorial strategy ;snowball throwing ;student achievement
Blood Pressure, Aortic Stiffness, Hemodynamics, and Cognition in Twin Pairs Discordant for Type 2 Diabetes
Authors: Karayiannis Christopher , Moran Chris , Sharman James E. , Beare Richard , Quinn Stephen J. , Phan Thanh G. , Wood Amanda G. , Thrift Amanda G. , Wang Wei C. , Srikanth Velandai 
Published: August 2019

Background: Type 2 diabetes (T2D) is associated with an increased risk of cognitive impairment and dementia with poorly understood underlying mechanisms. Objective: We examined the role of blood pressure (BP), aortic stiffness, and hemodynamics in this association. Methods: Cross-sectional sample of late middle-aged twins discordant for T2D from the Australian Twin Registry. Measurements included neuropsychological battery and brain MRI including arterial spin labelling (ASL) to measure cerebral perfusion. Mobil-o-Graph devices were used to non-invasively obtain 24-hour BP, aortic stiffness, and hemodynamic measures. Using mixed modelling, we studied associations of T2D with cognition, MRI measures, BP, aortic stiffness, and hemodynamics. Results: There were 23 twin pairs with mean age 63.7 (SD = 6.1) years. T2D (β=–0.45, p < 0.001) and age (β=–0.05, p = 0.022) were independently associated with poorer attention but not with memory or perceptual speed. T2D was associated with reduced nocturnal central systolic BP dipping (β=–3.79, p = 0.027), but not with BP, aortic stiffness, cerebral perfusion, or other hemodynamic measures. There was a statistically significant interaction between T2D and central systolic BP dipping in predicting attention scores (both p < 0.05 for the interaction term) whereby there was a positive association between BP dipping and attention scores in those with T2D, but not in those without T2D. Conclusion: We found an association between T2D and reduced nocturnal central systolic dipping, but not with any other measures of BP, stiffness or hemodynamic measures. Further study of the role of nocturnal central BP dipping in the association between T2D and cognitive impairment may help identify potential mechanisms.
Ultrasensitive Detection of Plasma Amyloid-β as a Biomarker for Cognitively Normal Elderly Individuals at Risk of Alzheimer’s Disease
Authors: Chatterjee Pratishtha , Elmi Mitra , Goozee Kathryn , Shah Tejal , Sohrabi Hamid R. , Dias Cintia B. , Pedrini Steve , Shen Kaikai , Asih Prita R. , Dave Preeti , Taddei Kevin , Vanderstichele Hugo , Zetterberg Henrik , Blennow Kaj , Martins Ralph N. 
Published: August 2019

Background: Aberrant amyloid-β (Aβ) deposition in the brain occurs two decades prior to the manifestation of Alzheimer’s disease (AD) clinical symptoms and therefore brain Aβ load measured using PET serves as a gold standard biomarker for the early diagnosis of AD. However, the uneconomical nature of PET makes blood markers, that reflect brain Aβ deposition, attractive candidates for investigation as surrogate markers. Objective: Investigation of plasma Aβ as a surrogate marker for brain Aβ deposition in cognitively normal elderly individuals. Methods: Plasma Aβ40 and Aβ42 concentrations were measured using the ultrasensitive Single Molecule Array (Simoa) assay in 95 cognitively normal elderly individuals, who have all undergone PET to assess brain Aβ deposition. Based on the standard uptake value ratios (SUVR) obtained from PET imaging, using the tracer 18F-Florbetaben, plasma Aβ was compared between 32 participants assessed to have low brain Aβ load (Aβ–, SUVR <1.35) and 63 assessed to have high brain Aβ load (Aβ+, SUVR ≥1.35). Results: Plasma Aβ42/Aβ40 ratios were lower in the Aβ+ group compared to the Aβ–group. Plasma Aβ40 and Aβ42 levels were not significantly different between Aβ–and Aβ+ groups, although a trend of higher plasma Aβ40 was observed in the Aβ+ group. Additionally, plasma Aβ42/Aβ40 ratios along with the known AD risk factors, age and APOE ɛ4 status, resulted in Aβ+ participants being distinguished from Aβ–participants based on an area under the receiver operating characteristic curve shown to be 78%. Conclusion: Plasma Aβ ratios in this study are a potential biomarker for brain Aβ deposition and therefore, for preclinical AD. However, this method to measure plasma Aβ needs further development to increase the accuracy of this promising AD blood biomarker.
DETERMINASI OPINI AUDIT DENGAN PENEKANAN GOING CONCERN PADA PERUSAHAAN MANUFAKTUR DI BURSA EFEK INDONESIA
Authors: Firdaus Hendra 
Published: August 2019

ABSTRACT Going concern opinion accepted by a company represents the condition and events which arises auditor’s hesitation of the company’s going concern. Going concern audit opinion can be used as early warning to the user of financial statements in order to prevent mistakes on decision making. A number of research has been conducted concerning factors that influence to going concern audit opinion. Yet, its result keeps showing inconsistency. This study objective is to reinvestigate factors that influence going concern audit opinion. The factors used on this research are liquidity, leverage, profitability, company’s size, company’s growth, audit lag, and auditor client tenure.This research using sample of manucaturing companies listed on Indonesia Stock Exchange during 2012-2016. Based on purposive sampling, there are 30 manufacturing companies which fulfilled the sample requirements. Hypotesis testing on this research was done by the logistic regression analysis.The hypotesis testing showed that leverage have positive relationship to going concern audit opinion. Variables of profitability have negative relationship to going concern audit opinion. Variables of liquidity, company’s size, company’s growth, audit lag and auditor client tenure have no relationship to going concern audit opinion.
PENGARUH PENGUNGKAPAN CORPORATE SOCIAL RESPONSIBILITY TERHADAP HARGA SAHAM PERUSAHAAN PERTAMBANGAN YANG TERDAFTAR DI BEI
Authors: Sulaiman Muhammad Fahmi , Punawan Herry 
Published: August 2019

ABSTRACT The aim of this study is to know the affect of Corporate Social Responsibility Disclosure toward stock prices of mining companies registered on the Indonesia Stock Exchange 2012-2016. This study is an ex post facto study, the sample of this study were 95 companies annual reports. The data in this study was obtained by study documentation method. Data analysis method used was an analysis of multiple regression. The results showed that (1) Economic Disclosure in Corporate social Responsibility Disclosure affected significantly on stock prices , (2) Environment Disclosure in Corporate Social Responsibility Disclosure didn’t affect significantly on stock prices, (3) Social Disclosure in Corporate Social Responsibility Disclosure didn’t affect signifacantly on stock prices, (4) Economic Disclosure, Environment Disclosure, Social Disclosure in Corporate Social Responsibility Dsiclosure simultaneously affected significantly on stock prices.
SYNTHESIS OF NANOSCALED MAGNETIC MATERIALS ON THE BASIS OF OXIDE SYSTEMS AND MANUFACTURING OF NON-RECIPROCAL COMPOSITE ELEMENTS BASED ON THEM
Authors: Fedorchuk Oleksandr , Solopan Sergii , Popov Maksym , Zavislyak Igor , Belous Anatolii 
Published: August 2019

Nanoscaled particles of nickel-zinc ferrites solid solutions were synthesized by the method of precipitation from aqueous solutions, as initial reagents were used nitrates solutions, namely Fe(NO3)3, Ni(NO3)2 and Zn(NO3)3. Cylindrical composite resonant elements in a form of systems “high-Q non-magnetic dielectric – magnetic film” were manufactured using synthesized particles. As a non-magnetic dielectric was used barium tetratitanate BaTi4O9 with a doping of ZnO. For this the film-forming suspension consisted of synthesized ferrite particles and photopolymer was prepared. The suspension was applied on the end face of the dielectric resonator and polymerized by the UV radiation. Magnetic field of electromagnet was applied to the composite resonators during the magnetic film polymerization process (parallel or normal to the resonators axis).
Absorption spectra of composite resonators in the waveguide measuring cell under influence of an external magnetic field were obtained. Spectra confirm the opportunity to control the resonance frequency of the composite structure and energy absorption in it using the external permanent magnetic field. The tuning of composite resonators parameters was more efficient for the resonators with the film polymerized in the parallel to the resonator axis field. For the frequency shift and electromagnetic isolation were obtained the values of 71 MHz and 53 dB respectively but with a high “straight” energy losses in the area of ferromagnetic resonance. So, the measuring cell with the composite resonator located in it was simulated using an Ansys HFSS software. Respective absorption spectra were obtained. It is shown that it is possible to manufacture composite resonators with a needed for the practical applications characteristics level (reverse losses were 34 dB, straight losses were 0.8 dB) and a tuning ability for the development of superheterodyne transmitters, dynamic filters for microwave technics, microwave valves, etc.
VAPOR-PHASE SYNTHESIS OF LACTIDE FROM ETHYL LACTATE OVER TiO2/SiO2 CATALYST
Authors: Brei Volodymyr , Varvarin A , Levytska Svetlana , Glushchuk Ya 
Published: August 2019

The lactide is monomer for production of polylac- tide – biodegradable polymer that use as an ecological packagingmaterial. In an industry the two-stage lactide synthesis is applied. At first, lactic acid condenses into the oligomer using Sn-octanoate catalyst, then oligo- mer depolymerizes to lactide. The drawbacks of this liquid-phase method are a significant amount of by- products — dimers and trimers of lactic acid and low lactide yield.Now a direct vapor-phase condensation of lactic acid and its esters to lactide is considered as alternative to the industrial process. One-stage lactide obtaining and use of solid catalysts are advantages of such method. In this work, the vapor-phase transfor- mation of ethyl lactate over supported TiO2/SiO2 and TiO2/Al2O3 oxides in nitrogen flow at 200–300 °С
was studied. The oxide samples were obtained by impregnating silica gel and γ -alumina with an approp- riate amount of titanium tetrabutoxide solution in iso- propanol, then dried at 80 oC, and finally calcined at 500 oC in air for 4 h. The catalysts were characterized by BET method, X-ray diffraction and UV-Vis diffuse reflectance spectroscopy. Catalytic experi- ments were carried out in a steel flow reactor at 200
–270 °С and atmospheric pressure. The load on a ca-talyst was varied in the interval of 8.2–36.4 mmol ethyllactate/(gcat⋅ h) that corresponds gas hourly space velo- city of the mixture of ethyl lactate and nitrogen of 1230–1490 h–1. It was shown that TiO2/SiO2 with5 wt.% content of titanium dioxide provides 48 % conversion of ethyl lactate with selectivity and pro- ductivity towards lactide 74 % and 7.0 mmol/(gcat⋅ h)at 270 °C, respectively. It was found thatTiO2/SiO2 is more efficiently for lactide producing (STY = 6.2 mmol/(gcat⋅ h) compared to TiO2/Al2O3catalyst (STY =1.8 mmol/(gcat⋅ h). It was shown that spent TiO2/ SiO2 catalyst fully restores activity after regenerati- on in air at 500 °С for 2 h. The two-stage scheme of ethyl lactate condensation with the participation of coordina- tion-unsaturated titanium ions is discussed.