bluuebunny/crossref_metadata_2025_split huggingface dataset:
Darboux Transformation, Exact Solutions and Conservation Laws for the Reverse Space-Time Fokas-Lenells Equation
Authors: Song Jiang-Yan , Xiao Yu , Zhang Chi-Ping 
Published: November 2021

Abstract
In this paper, we firstly deduce a reverse space-time Fokas-Lenells equation which can be derived from a rather simple but extremely important symmetry reduction of corresponding local equation. Next, the determinant representations of one-fold Darboux transformation and N-fold Darboux transformation are expressed in detail by special eigenfunctions of spectral problem. Depending on zero seed solution and nonzero seed solution, exact solutions, including bright soliton solutions, kink solutions, periodic solutions, breather solutions, rogue wave solutions and several types of mixed soliton solutions, can be presented. Furthermore, the dynamical behaviors are discussed through some figures. It should be mentioned that the solutions of nonlocal Fokas-Lenells equation possess new characteristics different from the ones of local case. Besides, we also demonstrate the integrability by providing infinitely many conservation laws. The above results provide an alternative possibility to understand physical phenomena in the field of nonlinear optics, and related fields.
Integrability and Multisoliton Solutions of the Reverse Space or/and Time Nonlocal Fokas-Lenells (FL) Equation
Authors: Zhang Wen-Xin , Liu Yaqing 
Published: November 2021

Abstract
This paper studies reverse space or/and time nonlocal Fokas-Lenells (FL) equation, which describes the propagation of nonlinear light pulses in monomode optical fibers when certain higher-order nonlinear effects are considered, by Hirota bilinear method. Firstly, variable transformations from reverse space nonlocal FL equation to reverse time and reverse space-time nonlocal FL equations are constructed. Secondly, the one-, two- and three-soliton solutions of the reverse space nonlocal FL equation are derived through Hirota bilinear method, and the soliton solutions of reverse time and reverse space-time nonlocal FL equations are given through variable transformations. Dynamical behaviors of the multisoliton solutions are discussed in detail by analyzing their wave structures. Thirdly, asymptotic analysis of two- and three-soliton solutions of reverse space nonlocal FL equation is used to investigated the elastic interaction and inelastic interaction. At last, the Lax integrability and conservation laws of three types of nonlocal FL equations is studied. The results obtained in this paper possess new properties that different from the ones for FL equation, which are useful in exploring novel physical phenomena of nonlocal systems in nonlinear media.
Impact of the Gamma Variant on the ICU Admission in a Hospital of the Autonomous City of Buenos Aires (CABA), Argentina
Authors: Mandich Veronica , Chiacchiara Daniel , Bravo Marcelo , Pilipec Antonio , Grimaldi Santiago , Cotez Johnny , Paniouk Victor , Arevalo Henry , Escobar Oswaldo , Flach Sebastian Perez , Pozo Amilcar Herbas , Aimar Alejandro , Vargas Mario , Zañudo Karina 
Published: November 2021

Abstract
Purpose: Comparison between patients admitted to the Intensive Care Unit (ICU) with ventilatory support during the first and second wave (Gamma variant) of COVID 19 in a tertiary hospital in the City of Buenos Aires.Method: Descriptive, observational, prospective cohort study in ICU of an acute general hospital in Argentina, with patients adult patients COVID-19 admitted consecutively to the ICU. The ICU the main variables of interest: Demographic and laboratory data, history, duration of MV, mortality.Results: 44 patients were recruited during the first wave, and 80 in the second. Significant differences were observed in the second wave for age (60, [SD 11]; vs 68 [SD 11]; p <0.01), days with symptoms (9 [SD 5]; vs 4.5 [SD 3]; p <0.01), duration of MV (10 days [SD 7]; vs 16 [SD 13]; p <0.01), Ferritin (1450 mcg / l [SD 547]; vs 941 mcg / l [ SD 593]; p 0.04) and use of antibiotics (97% vs 45% p <0.01). There was no difference in mortality (66% vs 78% p 0.14) but there was in its primary causes; being more frequent hypoxemia associated with sepsis in the second wave (40% vs 3.4% p <0.01) and hypoxemia and multiorgan failure in the first (28% vs 4% p <0.01).Conclusions: During the second wave of the pandemic, due to Gamma variant, more patients were admitted to our unit, younger, with a longer evolution time, a shorter time on MV and a greater inflammatory response, with no difference in mortality, although there was a difference in its causes.
THE BALANCED SCORECARD AS A STRATEGIC PERFORMANCE CONTROL TOOL AND ITS LINK TO THE ECONOMIC PROFIT MEASUREMENT- EVA AND MVA: A LITERATURE REVIEW
Authors: Krishnan Anbalagan , Ravindran R. 
Published: November 2021

The organizational performance measurement and control system is vital to sustain the business in all economic environments. Organization requires a control system that measures the performance strategically. This paper gathers the literature discussion of one such popular integrated strategic performance control system, the balanced scorecard approach (BSC). The discussion focuses on BSC approach on facilitating the implementation of organizational strategic and its link to the economic profit measures. Two popular economic profit measures, the Economic Value Added (EVA) and Market Value Added (MVA) are discussed in detail from various researchers point of view. The paper highlights the difference between these two measures and difference with the Return on Investment (ROI). The limitation of the economic profit measure is also highlighted in the discussion. As conclusion the link between the BSC strategic performance control tool and the economic profit measures are noted. This paper provides detailed discussions of both BSC strategic tool and economic profit measures based on literature review.
VALUE-AT-RISK (VAR) APPLICATION AT HYPOTHETICAL PORTFOLIOS IN JAKARTA ISLAMIC INDEX
Authors: Tamara Dewi , Ryabtsev Grigory 
Published: November 2021

The paper is an exploratory study to apply the method of historical simulation based on the concept of Value at Risk on hypothetical portfolios on Jakarta Islamic Index (JII). Value at Risk is a tool to measure a portfolio’s exposure to market risk. We construct four portfolios based on the frequencies of the companies in Jakarta Islamic Index on the period of 1 January 2008 to 2 August 2010. The portfolio A has 12 companies, Portfolio B has 9 companies, portfolio C has 6 companies and portfolio D has 4 companies. We put the initial investment equivalent to USD 100 and use the rate of 1 USD=Rp 9500. The result of historical simulation applied in the four portfolios shows significant increasing risk on the year 2008 compared to 2009 and 2010. The bigger number of the member in one portfolio also affects the VaR compared to smaller member. The level of confidence 99% also shows bigger loss compared to 95%. The historical simulation shows the simplest method to estimate the event of increasing risk in Jakarta Islamic Index during the Global Crisis 2008.
Mengatasi Anak Tantrum Dengan Media Melukis Pada Masa Pandemi
Authors: Aisyah Siti , Afrianingsih Anita 
Published: November 2021

Temper trantum merupakan suatu bentuk luapan emosi yang tidak terkontrol pada anak. Masih Banyak di Indonesia orangtua belum mengenal istilah ini, namun sangat akrab dengan perilaku yang ditunjukkan anak saat mengalami temper tantrum seperti menangis keras-keras, berteriak, menjerit, memukul, menggigit, mencubit, menendang, serta melempar badan ke lantai. Covid-19 telah resmi menjadi pandemi di Dunia. Sejak di tetapkannya pandemi ini banyak sekali aktivitas yang berubah mulai dari pekerjaan, sekolah bahkan kehidupan sehari-hari pun berubah. Kegiatan yang dilakukan di rumah saja berdampak cukup besar kepada siswa, diantaranya adalah mereka harus belajar dari rumah. Belajar dari rumah secara Daring membuat siswa harus beradaptasi secara ekstrim perubahan gaya belajar mereka. Hal ini menimbulkan kecemasan pada siswa, karena mereka tidak bisa bersosialiasai dan bermain bersama teman seperti biasa, berkurangnya bimbingan dari guru, orang tua yang kurang mampu memberikan bimbingan belajar, membuat siswa panik karena takut tidak dapat pencapai target belajar mereka sebelumnya. Anak usia dini merupakan anak yang baru belajar mengenal dirinya sendiri, termasuk sosial emosionalnya. Pada masa ini pula anak-anak baru mengenal perasaan senang, sedih, marah, kecewa dan sebagainya. anak usia dini masih belum mampu mengelola dan mengekspresikan emosinya secara wajar. Konselor dalam sesi konseling harus memiliki berbagai cara keterampilan untuk membantu mengungkap permasalahan ataupun keinginan konseli, salah satu cara mengungkap permasalahan konseli dapat dilakukan menggunakan lukisan. Lukisan sangat tepat untuk mengepresikan berbagai hal yang sulit diungkapkan konseli secara verbal maupun tulisan Konseling yang baik adalah dengan seni, karena lebih selaras dengan humaniora dibandingkan dengan ilmu pengetahuan (Hansen, 2012). Pendekatan penelitian ini menggunakan metode Observasi dan tindakan orang tua. Pada penelitian ini subyek menangis karena tidak ingin mengerjakan PR BDRnya daningin bermain dengan memandikan ayamnya, akan tetapi orangtuanya mencegahnya sehingga ia menangis dan melempar-lempar barang yang ada di sekitarnya. Dalam penelitian ini konseling memberikan terapi Melukis Pada subyek dan subyek merespon dengan baik.
A Giant Mass Filling the Left Atrium: A Case Report
Authors: Gonçalves Fernando Fonseca , Borges Sara , Moreira José Ilídio 
Published: November 2021

Background:
Cardiac tumors have heterogeneous and unspecific clinical presentations
which is why their diagnosis is difficult.

Case report:
A middle-aged woman presented to the emergency department with unspecific symptoms
developing over 2 weeks. Multimodality imaging revealed a large mass filling the left atrium
with a large base adherent to the fossa ovalis and flow obstruction. After surgical extraction, the
anatomopathological analysis was compatible with a primary benign cardiac tumor.

Conclusion:
Clinical presentation of cardiac tumors is usually unspecific and multimodality imaging
is crucial in the diagnostic workflow. Surgical excision should be performed as quickly as possible.
Changes in the Area Adjacent to the Internal Receiver-Stimulator of Cochlear Implant: A Retrospective Study
Authors: Aljazeeri Isra , Khurayzi Tawfiq , Abdelsamad Yassin , Almuhawas Fida , Hagr Abdulrahman 
Published: November 2021

Background:
In some patients with cochlear implants, bony resorption at the internal receiver-stimulator site can be observed on postoperative computed tomography. Therefore, it is essential to elucidate the effects of the internal receiver-stimulator on the scalp and bony bed over time.

Objective:
We aimed to evaluate how the internal receiver-stimulator of a cochlear implant device changed the thickness of the surrounding scalp and skull over time using computed tomography.

Methods:
This retrospective study evaluated patients who underwent cochlear implantation and received two computed tomography scans postoperatively for different indications at a tertiary referral centre. The main outcomes were scalp thickness and bony bed depth.

Results:
Fourteen ears were included in this study. There was very good inter-rater reliability, with a Cronbach’s alpha of 0.94. The mean scalp thickness over the internal receiver-stimulator was 6.02 (+/-2.4) mm in the first scan and decreased with no significant change to 5.62 mm (+/-1.64) in the second scan (p = 0.59, paired t-test). The mean depth of the bony bed increased significantly from 1.39 mm (+/-0.93) to 2.62 mm (+/-1.24) (p = 0.03).

Conclusion :
There was no change in the thickness of the scalp overlying the internal receiver-stimulator indicating that the scalp was more resistant than the bony skull to the tensile pressure exerted by the internal receiver-stimulator. In contrast, the bony bed depth of the internal receiver-stimulator increased over time. This can result in decreased internal receiver-stimulator protrusion and decreased risk of device displacement and migration.
Effect of Functionality of Organophosphorus Flame Retardants on
Flammability and Thermal Stability of DGEBA-Based Epoxy Resin Nanocomposites
Authors: Bazzad Priyanka , Dahiya J.B. 
Published: November 2021

Background:
Epoxy resins have been extensively used in fire hazard environments,
such as printed circuit boards, electrical isolation materials, adhesives, construction, and transportation
due to their economically viable, simple processing. Therefore, the development of thermally
stable and flame-retardant epoxy resin systems is essential.

Objective:
The aim of the present study was to study the effect of the functionality of organophosphorus
flame retardants on DGEBA-based epoxy resin nanocomposites on thermal stability and
flame retardancy.

Method:
DGEBA (diglycidyl ether of bisphenol-A)-based epoxy resin nanocomposites having 2.0
wt% phosphorus were prepared with organophosphorus flame retardants with different functionalities
by using an in-situ polymerization method. The flame retardant compounds uni-functional 9,
10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and bi-functional 2-(6-oxid-6Hdibenz
[c, e] [1, 2] oxaphosphorin 6-yl) 1, 4-benzenediol (DOPO-HQ) were prepared. The thermal
behavior of composites was studied by TG and DTA techniques. The flammability behavior was investigated
by UL-94 and limiting oxygen index (LOI) tests.

Results:
The XRD and TEM results showed the mixed dispersion of nanoclay platelets in an epoxy
matrix. The thermal stability of the epoxy composite (EPDOPO-HQ) containing bi-functional DOPOHQ
is increased by 16°C in comparison to the epoxy composite (EPDOPO) containing uni-functional
DOPO. According to the TG analysis, the addition of nanoclay was observed to be more effective
and synergistic with bi-functional DOPO-HQ as the EPDOPO-HQ/NC sample gains more resistance to
degradation after around 450°C and also gave rise to a high char yield. Epoxy resin samples containing
reactive flame retardants gave UL-94 V-0 rating, but further addition of 2.0 wt% nanoclay
lowered the rating from V-0 to V-1.

Conclusions:
TG analysis of the epoxy composite samples showed that the addition of nanoclay
were observed to be synergistic with bi-functional flame retardant (DOPO-HQ) as the EPDOPO-HQ/NC
sample gained more resistance to degradation after around 450°C due to the formation of mixed intercalated
and exfoliated structure. The EPDOPO-HQ sample gave a high char yield with increased
onset degradation temperature, high thermal stability as well as high flame retardancy.
Studi kasus permasalahan mahasiswa PGSD dalam menyusun RPP berbasis etnomatematika Kraton Yogyakarta
Authors: Mauluah Luluk , Putra Eka Cahya Sari 
Published: November 2021

Rencana Pelaksanaan Pembelajaran (RPP) mempunyai fungsi strategis sebagai pedoman dalam pelaksanaan pembelajaran. Pengembangan RPP untuk meningkatkan kualitas pembelajaran banyak dilakukan berdasar model pembelajaran, strategi, media, materi, dan filosofinya. Etnomatematika merupakan hal yang masih baru sehingga pengembangan RPP berbasis etnomatematika yang berfungsi untuk mengenalkan dan mendorong kesadaran budaya masih belum banyak dilakukan. Penelitian ini ingin mengungkap permasalahan dan kesulitan apa saja yang dialami mahasiswa dalam menyusun RPP berbasis etnomatematika dan bagaimana karakteristik produk RPP terkait etnomatematika. Penelitian ini menggunakan studi kasus dengan responden terdiri dari 10 mahasiswa PGSD Universitas Negeri Yogyakarta yang memberikan keterangan mendalam tentang kesulitan yang dialami. Berdasar wawancara mendalam, diperoleh kesimpulan mengenai kesulitan penyusunan RPP antara lain pada aspek: sintaks, metode, dan model, kemudian muncul permasalahan yang esensi yaitu sejauh mana etnomatematika muncul dalam RPP.Case study of student problems in the Elementary School Teacher Education Study Program in compiling an ethnomathematical lesson plan based on the Yogyakarta Palace AbstractThe Lesson Plan has a strategic function as a guide in the implementation of learning. The development of lesson plans to improve the quality of learning is mostly carried out based on learning models, strategies, media, materials, and philosophies. Ethnomathematics is still new, so the development of ethnomathematics-based lesson plans that serve to introduce and encourage cultural awareness is still not widely practiced. This research wants to reveal, what students experience problems and difficulties in preparing ethnomathematics-based lesson plans, and how the characteristics of lesson plans relate to ethnomathematics. This study uses a case study with respondents consisting of 10 Elementary School Teacher Education students at Universitas Negeri Yogyakarta who provide in-depth information about the difficulties they are experiencing. Based on in-depth interviews, conclusions were obtained about the difficulties in preparing a lesson plan, among others, in the aspects: syntax, methods, and models, then the essential problem arises, namely the extent to which ethnomathematics appear in the lesson plan.
PENGEMBANGAN MODUL PERAWATAN DAN PERBAIKAN SASIS, PEMINDAH TENAGA KELAS XI SMKN 2 KLATEN
Authors: Insya Anna , Sukaswanto Sukaswanto 
Published: November 2021

Penelitian ini bertujuan untuk: (1) mengetahui prosedur atau langkah-langkah pengembangan, dan (2) mengetahui kelayakan modul mata pelajaran Perawatan dan Perbaikan Sasis, pemindah Tenaga Otomotif untuk kelas XI di SMK N 2 Klaten. Penelitian ini adalah jenis penelitian R&D dengan model pengembangan 4D oleh Thiagarajan, tahapannya yaitu: Define, Design, Develop, dan Disseminate. Data diperoleh dari penilaian oleh seorang ahli media dan seorang ahli materi serta respon pengguna sebanyak 36 peserta didik kelas XI TMPO B di SMK N 2 Klaten. Teknik analisis data menggunakan analisis deskriptif kuantitatif. Hasil penilaian kelayakan modul pembelajaran yaitu: dari ahli media mendapat skor 3,10 dari skala 4 dengan kategori layak; dari ahli materi mendapat skor 3,29 dari skala 4 dengan kategori sangat layak; dan respon pengguna mendapat skor 3,25 dari skala 4 dengan kategori sangat layak. Dari data tersebut dapat disimpulkan bahwa Modul Perawatan dan Perbaikan Sasis, Pemindah Tenaga Otomotif (PPSPTO) kelas XI dinyatakan layak dan dapat digunakan untuk pembelajaran. Kata Kunci: modul, pemindah tenaga, R&D
The Life Goals Self-Management Mobile App for Bipolar Disorder: Consumer Feasibility, Usability, and Acceptability Study
Authors: Ryan Kelly A , Smith Shawna N , Yocum Anastasia K , Carley Isabel , Liebrecht Celeste , Navis Bethany , Vest Erica , Bertram Holli , McInnis Melvin G , Kilbourne Amy M 
Published: November 2021

Background
Life Goals is an evidence-based self-management intervention that assists individuals with bipolar disorder (BD) by aligning BD symptom coping strategies with their personal goals. The intervention can be availed via in-person and telephonic sessions, and it has been recently developed as an individualized, customizable mobile app.

Objective
We examined the feasibility, usability, and acceptability of the Life Goals self-management app among individuals diagnosed with BD who used the app for up to 6 months.

Methods
A total of 28 individuals with BD used the Life Goals app on their personal smartphone for 6 months. They completed key clinical outcome measurements of functioning, disability, and psychiatric symptoms at baseline, 3 months, and 6 months, in addition to a poststudy survey about usability and satisfaction.

Results
Participants used the app for a median of 25 times (IQR 13-65.75), and for a longer time during the first 3 months of the study. The modules on depression and anxiety were the most frequently used, accounting for 35% and 22% of total usage, respectively. Overall, the study participants found the app useful (15/25, 60%) and easy to use (18/25, 72%), and they reported that the screen displayed the material adequately (22/25, 88%). However, less than half of the participants found the app helpful in managing their health (10/25, 40%) or in making progress on their wellness goals (9/25, 36%). Clinical outcomes showed a trend for improvements in mental and physical health and mania-related well-being.

Conclusions
The Life Goals app showed feasibility of use among individuals with BD. Higher user engagement was observed in the initial 3 months with users interested more frequently in the mood modules than other wellness modules. Participants reported acceptability with the ease of app use and satisfaction with the app user interface, but the app showed low success in encouraging self-management within this small sample. The Life Goals app is a mobile health technology that can provide individuals with serious mental illness with more flexible access to evidence-based treatments.
Hubungan Antara High Order Thinking Skills dan Kemampuan Literasi Sains Mahasiswa Pendidikan Biologi
Authors: Thahir Rahmatia , Magfirah Nurul , Anisa Anisa 
Published: November 2021

Higher Order Thinking Skills can develop the ability to investigate problems, ask questions, pose challenging answers and discover new information. Higher order thinking skills are one of the factors that affect scientific literacy skills. Literacy skills are not enough just to be able to read, more than that, students are expected to have the ability to reason and competence, be active, creative, and critical of what they know. The purpose of this study was to analyze the relationship between higher order thinking skills and scientific literacy skills of Biology Education students, University of Muhammadiyah Makassar. This research includes correlational descriptive research which is carried out in the even semester of the 2020-2021 academic year. The instrument in this study was in the form of student learning outcomes tests. Then from student learning outcomes, a score will be given based on the ability to complete the HOTS test questions while the scientific literacy ability is assessed using a scoring rubric. there is a positive relationship between higher order thinking skills and scientific literacy skills of biology education students at the University of Muhammadiyah Makassar with a correlation value of 0.370. The value of learning outcomes with the average categorization of high order thinking skills is 56.7 and the average scientific literacy ability is 66.7.
Abstrak. Higher Order Thinking Skils dapat menumbuhkembangkan kemampuan untuk menyelidiki masalah, mengajukan pertanyaan, mengajukan jawaban yang menantang dan menemukan informasi baru. Kemampuan berpikir tingkat tinggi merupakan salah satu faktor yang mempengaruhi kemampuan literasi sains. Kemampuan literasi tidak cukup dengan bisa membaca saja, lebih daripada itu mahasiswa diharapkan memiliki kemampuan bernalar dan kompetensi, aktif, kreatif, serta kritis terhadap apa yang diketahuinya. Tujuan dari penelitian ini adalah untuk menganalisis hubungan antara higher order thinking skills dan kemampuan literasi sains mahasiswa Pendidikan Biologi Universitas Muhammadiyah Makassar. Penelitian ini termasuk penelitian deskriptif korelasional yang dilaksanakan pada semester genap tahun akademik 2020-2021. Instrument dalam penelitian ini berupa tes hasil belajar mahasiswa. Kemudian dari hasil belajar mahasiswa akan diberikan penskoran berdasarkan kemampuan menyelesaikan soal tes HOTS sedangkan kemampuan literasi sains dinilai dengan menggunakan rubrik penskoran. terdapat hubungan yang positif antara higher order thinking skills dan kemampuan literasi sains mahasiswa pendidikan biologi Universitas Muhammadiyah Makassar dengan nilai korelasi sebesar 0,370. Nilai hasil belajar dengan pengkategorian rata-rata higher order thinking skills sebesar 56,7 dan rata-rata kemampuan literasi sains sebesar 66,7.