bluuebunny/crossref_metadata_2025_split huggingface dataset:
Student attitude to distance education: Pros and cons
Authors: Illarionova Lyudmila P. , Karzhanova Natalya V. , Ishmuradova Alfia M. , Nazarenko Sergey V. , Korzhuev Andrey V. , Ryazanova Elena L. 
Published: July 2021

This article is aimed at identifying the peculiarities of students' attitude to distance education. As a leading method, the questionnaire method was used, which made it possible to identify the students’ positive and negative attitudes regarding distance learning more effectively. The article considers students' ideas about distance learning, identifies the positive and negative aspects of the distance learning process. The authors of the article in the process of research revealed that many students of various fields of study are interested in participating in distance courses, but within the framework of mastering a second education. Some students note the usefulness of distance courses, the use of their materials at any time, and the convenience of going back to the materials they have completed at any time to fill in gaps or recall a topic. Some students reported a violation of the educational process in the distance format due to the repeated lack of Internet or its poor quality. Most of the students expressed dissatisfaction with the lack of contact communication in the distance learning process. It is proved that the majority of students believe that distance education will never replace traditional education. Mainly students of technical areas of study gave a negative assessment of the distance education system. It was revealed that students of various fields of study took distance courses that were held in other cities or countries. From the point of view of many students, educational websites have an inconvenient interface.

Keywords: distance education, distance courses, students, learning process, pros and cons.
Heterodox Macroeconomics: algunas implicaciones para las opciones de política económica en México y los Estados Unidos y en el estudio de los modelos à la Harrod
Authors: De León Arias Adrián 
Published: July 2021

Nota bibliográfica de:
R. A. Blecker y M. Setterfield (2019). Heterodox Macroeconomics: Models of Demand, Distribution and Growth. Cheltenham, Reino Unido, y Northampton, Massachusetts: Edward Elgar.
Spesies Famili Hydrocharitaceae Pada Habitat Rawa Bervegetasi Galam Kecamatan Bati-Bati Kalimantan Selatan
Authors: Rabiatul Rabiatul , Dharmono Dharmono , Riefani Maulana Khalid 
Published: July 2021

Keanekaragaman tumbuhan terbagi atas Alga, Bryophyta, Pteridophyta, dan Spermatophyta yang hidup pada habitat perairan maupun daratan. Salah satu famili anggota tumbuhan Spermatophyta yang berhabitat di air adalah famili Hydrocharitaceae. Tujuan penelitian ini adalah untuk mengetahui keanekaragaman spesies famili Hydrocharitaceae di kawasan rawa vegetasi galam Kecamatan Bati-bati Kabupaten Tanah Laut. Penelitian menggunakan pendekatan diskriptif pada penelitan keanekaragaman spesies dari famili Hydrocharitaceae di kawasan rawa vegetasi galam dengan teknik pengambilan data secara jelajah. Data keanekaragaman spesies dianalisis secara diskriptif. Hasil penelitian menunjukkan, bahwa rawa bervegetasi galam Kecamatan Bati-Bati Kabupaten Tanah Laut ditemukan enam spesies anggota famili Hydrocharitaceae, yaitu; Blyxa echinosperma (CB. Clarke) Hook.f., Hydrilla verticillata (L. f.) Royle., Hydrocharis morsus-ranae L., Limnobium laevigatum (Humb. & Bonpl. ex Willd.) Heine., Ottelia ovalifolia (R.Br.) Rich., dan Ottelia alismoides (L.) Persoon.
Рідкі відходи органосольвентної делігніфікації соломи ріпаку
Authors: Галиш Віта , Дейкун Ірина 
Published: July 2021

Швидке зростання споживання різних видів целюлози та паперових виробів, а також відсутність необхідних запасів сировини для їх виробництва обумовлює необхідність застосування нелісових порід для виробництва різних матеріалів на основі целюлози. Ріпакова солома, яка не використовується для сільського господарства, може розглядатися як перспективна альтернатива деревині для отримання целюлози, виробництва картону та паперової продукції. Метою роботи було дослідити склад відпрацьованих розчинів після делігніфікації ріпакової соломи оцтовою кислотою. Підвищення температури призводить до збільшення кількості розчинених речовин, тоді як ефективність делігніфікації дещо знижується. Водночас підвищення температури призводить до збільшення сухого залишку через інтенсифікацію процесу видалення з сировини різних екстрактивних речовин, лігніну, полісахаридів та мінеральних речовин. Зольність також зменшується. Співвідношення тверде речовина:розчин, яке впливає на характер дифузійних процесів у біомасі під час делігніфікації, також є важливим фактором делігніфікації. Варіння при співвідношенні тверда речовина:розчин 5:1 дозволяє отримати меншу кількість розчинених компонентів, що призводить до низького вмісту сухого залишку у відпрацьованому розчині через неповну делігніфікацію ріпакової соломи. Дифузійні обмеження на перенесення пероцтової кислоти з целюлозного розчину в міжклітинний простір біомаси призводять до гальмування окиснення лігніну під час делігніфікації. Дифузія фрагментів окисленого лігніну із соломи у відпрацьований розчин також ускладнена. Під час окисно-орагносольвентної обробки ріпакової соломи оцтовою кислотою протягом 120 хв відпрацьований розчин характеризується вмістом сухого залишку 55,6 кг/м3. Отримані результати вказують на те, що в процесі делігніфікації оцтова кислота повністю витрачається на реакції окиснення компонентів сировини. В результаті витрачений розчин, збагачується на цукри. У той же час відпрацьований розчин містить значну кількість оцтової кислоти (723 г/л), яку доцільно регенерувати та повертати до процесу, щоб забезпечити принцип економії ресурсів.
The Deep Roots of Geology: Tectonic History of Australia and its Margins expressed by Mantle Anisotropy
Authors: Eakin Caroline 
Published: July 2021

Abstract
The Australian continental crust preserves a rich geological history, but it is unclear to what extent this history is expressed deeper within the mantle. Scattering of surface waves predominantly between 100-200 km depth by lateral gradients in seismic anisotropy, termed Quasi-Love waves, offer potential new insights. Across Australasia over 275 new scatterers are detected, and are found to be preferentially located near (1) the passive continental margins, and (2) the boundaries of major geological provinces within Australia. Such lateral anisotropic gradients imply pervasive fossilized lithospheric anisotropy within the continental interior, on a scale that mirrors the crustal geology at the surface, and a strong lithosphere that preserves this signal over billions of years. Along the continental margins, lateral anisotropic gradients may indicate either the edge of the thick continental lithosphere, or small-scale dynamic processes in the asthenosphere, such as edge-drive convection, tied to the transition from oceanic to continental lithosphere.
Composite Test inclusive of Benford’s Law, Noise reduction and 0-1 Test for effective detection of Chaos in Rotor-Stator Rub
Authors: Srivast Aman Kumar , Tiwari Mayank , Singh Akhilendra 
Published: July 2021

Abstract
Segregating noise from chaos in a dynamical system has been one of the most challenging work for the researchers across the globe due to their seemingly similar statistical properties. Even the most used tools such as 0-1 test and Lyapunov exponents fail to distinguish chaos from regular dynamics when signal is mixed with noise. This paper addresses the issue of segregating the dynamics in a rotor-stator rub system when the vibrations are subjected to different levels of noise. First, the limitation of 0-1 test in segregating chaotic signal from regular signal mixed with noise has been established. Second, the underexplored Benford’s Law and its application to the vibratory dynamical rotor-stator rub system has been introduced for the first time. Using the Benford’s Law Compliance Test (BLCT), successful segregation of not only noise from chaos but also very low Signal to Noise Ratio (SNR) signals which are mainly stochastic has been achieved. The Euclidean Distance concept has been used to explore the scale-invariant probability distribution of systems that comply with Benford’s Law to separate chaos from noise. Moreover, for moderate bands of noise in signals, we have shown that the Schreiber’s Nonlinear Noise Reduction technique works effectively in reducing the noise without damaging the dynamic properties of the system. Combining these individual layers (0-1 Test, BLCT and Noise reduction) on a rotor system, a Decision Tree based method to effectively segregate regular dynamics from chaotic dynamics in noisy environment has been proposed.
Opposition-based learning Multi-Verse Optimizer with disruption operator for optimization problems
Authors: Shehab Mohammad , Abualigah Laith 
Published: July 2021

Abstract
Multi-Verse Optimizer (MVO) algorithm is one of the recent metaheuristic algorithms used to solve various problems in different fields. However, MVO suffers from a lack of diversity which may trapping of local minima, and premature convergence. This paper introduces two steps of improving the basic MVO algorithm. The first step using Opposition-based learning (OBL) in MVO, called OMVO. The OBL aids to speed up the searching and improving the learning technique for selecting a better generation of candidate solutions of basic MVO. The second stage, called OMVOD, combines the disturbance operator (DO) and OMVO to improve the consistency of the chosen solution by providing a chance to solve the given problem with a high fitness value and increase diversity. To test the performance of the proposed models, fifteen CEC 2015 benchmark functions problems, thirty CEC 2017 benchmark functions problems, and seven CEC 2011 real-world problems were used in both phases of the enhancement. The second step, known as OMVOD, incorporates the disruption operator (DO) and OMVO to improve the accuracy of the chosen solution by giving a chance to solve the given problem with a high fitness value while also increasing variety. Fifteen CEC 2015 benchmark functions problems, thirty CEC 2017 benchmark functions problems and seven CEC 2011 real-world problems were used in both phases of the upgrade to assess the accuracy of the proposed models.
Defining Climate Zone of Borneo based on Cluster Analysis
Authors: Sa'adi Zulfaqar , Shahid Shamsuddin , Shiru Mohammed Sanusi 
Published: July 2021

Abstract
Although Borneo Island is one of the most vulnerable tropical regions to climate change, maps depicting the local climate conditions employing climate classification are still not well defined. The present study attempted regional climate classification to divide the Borneo region into several homogenous groups based on long-term average climate behavior. Daily gridded rainfall and temperature (Tavg, Tmax, and Tmin) data at 0.25o resolution spanning 56-years (1960−2016) was used. The classification was done using non-hierarchical k-mean and several hierarchical methods, namely, Single, Complete, McQuitty, Average, Centroid, Median, and two algorithms of Ward's method, wardD, and wardD2. The results showed that k-mean, wardD, and wardD2 were able to classify the climate of Borneo into four zones, namely 'Dry and hot' (DH), 'Wet and hot' (WH), 'Wet' (W), and 'Wet and cold' (WC) with a considerable difference at the boundaries. Spatial relevancy, stability, and variability of the clusters based on correlation and compromise programming showed that the wardD method was the most likely to yield acceptable results with optimum 4-cluster to partition the area into four principal climate zones. The constructed cluster plot, centroid plot, and probability distribution function (PDF) showed a distinct climatic characteristic between the climate zones in terms of rainfall, temperature, and seasonality. The proposed climate zonation for Borneo can help in better understanding climate regionality and climate-related development planning.
WITHDRAWN: The effectiveness of Fractional CO2 laser and long-pulsed ND- YAG laser in managing striae
Authors: AF Hendawy , DG Aly , HA Shokeir , NA Samy 
Published: July 2021

Abstract
Background: Striae Distansae (SD) are a disfiguring dermal condition, characterized by linear bands of atrophic skin, occurring at sites of dermal damage caused by stretching. They affect adolescents and more than 70% of pregnant females due to stretching of the skin. Aims: To evaluate and to compare the efficacy of 1, 064 nm Long Pulsed Nd: YAG laser and Fractional CO2 laser in the management of SD. Patients/Methods: Thirty female patients with bilateral symmetrical SD were treated with Fractional CO2 laser on one side and long-pulsed Nd: YAG laser on the other side. All patients received 3 sessions at 3 weeks interval. Global Aesthetic improvement scale (GAIS) and was used to evaluate improvement 3 months post treatment. Four mm punch biopsies were taken from each side before treatment and 3 months after the last session to measure epidermal and collagen thickness. Findings: More significant clinical improvement was noted with the Nd:YAG laser than Fractional CO2 laser. Both GAIS and satisfaction score were significantly higher in the Nd:YAG laser treated side epidermal and collagen thickness were evidently increased in the Nd: YAG laser treated lesions than those treated by Fractional CO2 laser with no significant difference. Conclusions: Long pulsed Nd-YAG laser is clinically more effective than the Fractional CO2 laser in treating SD without serious side effects, although there was no significant difference between them histopathologically.
Highly Sensitive THz Refractive Index Sensor Based on Folded Split-Ring Metamaterial Graphene Resonators
Authors: Nickpay Mohammad-Reza , Danaie Mohammad , Shahzadi Ali 
Published: July 2021

Abstract
A highly sensitive absorption-based sensor based on folded split-ring metamaterial graphene resonators (FSRMGRs) is designed, and its biomedical application in terahertz (THz) spectrum is investigated. The sensor has a nearly perfect absorption with a spectral absorption coefficient of 99.75% at 4 THz, with a high Q-factor (average) of 13.76. The resonance peak frequency is sensitive to the refractive index (RI) of the test medium (analyte) and a fairly high sensitivity of 851 GHz/RIU has been obtained. The specifications of the sensor can be tuned by an external DC-bias voltage applied to the graphene layer. According to the obtained results, the developed absorber appears to be a good candidate bio-sensing applications.
A Randomized Controlled Trail of A Narrative Therapy Technique Intervention To Facilitate The Life Meaning In Chinese Breast Cancer Patients During Chemotherapy: Study Protocol
Authors: Lu Lijing , Lu Ningning , Lou Ying , Shan Jingyi , Meng Aifeng , Wang Pengcheng , Tang Lin , Cheng Fang 
Published: July 2021

Abstract
Aim:The purpose of this protocol is to illustrate the feasibility and effectiveness of face-to-face intervention based on narrative therapy to enhance the sense of meaning in life and other relevant psychological indicators for Chinese breast cancer patients during chemotherapy.Background:The sense of meaning in life can relieve the negative emotions,improve patients' quality of life,enhance treatment compliance,tap the potential of coping with trauma and so on.Breast cancer patients with chemotherapy are facing more severe psychological distress and the existing intervention studies are less and the target population is not suitable for breast cancer patients with chemotherapy.Through narrative psychotherapy,the psychological growth of patients can be achieved.This protocol is based on a brief face‐to‐face narrative therapy technique intervention to improve life meaning for breast cancer patients during chemotherapy.Design:A non-blinded randomized controlled trial.Methods:92 breast cancer chemotherapy patients were randomly divided into the experimental group and the control group in a 1:1 ratio,and 6 face-to-face individualized interventions were conducted.The four evaluations were conducted after diagnosis,the third intervention,the last intervention,and three months after the last intervention.The main evaluation indicators were the sense of meaning of life,the level of anxiety and depression,the level of post-traumatic growth,psychological distress and medical coping style.Discussion:The purpose of this study is to construct an intervention program based on narrative therapy technology to improve the life meaning of Chinese breast cancer patients undergoing chemotherapy.If the intervention program is effective and feasible,it can be applied in clinic and benefit patients.Impact:This study will provide a reference template for clinical psychological intervention,allowing breast cancer patients to reconstruct the meaning of life in trauma.If this protocol is effective,it will be applied in clinic.Trial registration:This trial was registered on Chinese clinical Trials.gov (ChiCTR2000034409),the registration date is 04/07/2020.Registered url is http://www.chictr.org.cn/index.aspxThis study was reviewed by the ethics committee of Nanjing Medical University. The results showed that the rights and interests of the subjects were fully protected, and there was no potential risk for the subjects. This study was agreed to carry out.
Quantifying SARS-Cov-2 Nucleocapsid Antigen in Oropharyngeal Swabs Using Single Molecule Array Technology
Authors: Olsen Dorte Aa. , Brasen Claus L. , Kahns Søren , Madsen Jeppe B. , Kierkegaard Helene , Christensen Henry , Jensen Anders , Sydenham Thomas V. , Møller Jens K. , Madsen Jonna S. , Brandslund Ivan 
Published: July 2021

Abstract
Background: This study aimed to develop a highly sensitive SARS-CoV-2 nucleocapsid antigen assay using the single molecule array (Simoa) technology and compare it with real time RT-PCR as used in routine clinical practice with the ambition to achieve a comparative technical and clinical sensitivity. Methods: Samples were available from 148 SARS-CoV-2 real time RT-PCR positive and 73 SARS-CoV-2 real time RT-PCR negative oropharyngeal swabs. For determination of technical sensitivity SARS-CoV-2 virus culture material was used. The samples were treated with lysis buffer and analyzed using both an in-house and a pre-commercial SARS-CoV-2 nucleocapsid antigen assay on Simoa. Results: Both nucleocapsid antigen assays have a technical sensitivity corresponding to around 100 SARS-CoV-2 RNA molecules/mL. Using a cut-off at 0.1 pg/mL the pre-commercial SARS-CoV-2 nucleocapsid antigen assay had a sensitivity of 96% (95% CI, 91.4-98.5%) and specificity of 100% (95% CI, 95.1-100%). In comparison the in-house nucleocapsid antigen assay had sensitivity of 95% (95% CI, 89.3-98.1%) and a specificity of 100% (95% CI, 95.1-100%) using a cut-off at 0.01 pg/mL. The two SARS-CoV-2 nucleocapsid antigen assays correlated with r=0.91 (p<0.0001). Conclusions: The in-house and the pre-commercial SARS-CoV-2 nucleocapsid antigen assay demonstrated technical and clinical sensitivity comparable to real-time RT-PCR methods for identifying SARS-CoV-2 infected patients and thus can be used clinically as well as serve as a reference method for antigen Point of Care Testing.
Performance Analysis for Wireless Power Transfer in Bi-directional DF Relaying aid MRC over Nakagami-m Fading.
Authors: PRAJAPATI DHARMENDRA , Hossain Ashraf , Baghel Gaurav Singh 
Published: July 2021

Abstract
In this paper, we research the performance of a bi-directional three-node cooperative relaying network that aids simultaneous wireless information and power transfer (SWIPT) in a direct connection region that is inuenced by the Nakagami-m fading environment. The information transfer between source nodes can be completed in three equal time phases if we consider two source nodes with direct links and a battery-enabled node.[1] . The maximum-ratio combining (MRC) approach was used at the destination node to use both the direct and relay links. In the rst two stages, the harvested energy at the relay node was used for power splitting (PS), and in the third phase, the harvested energy was used for information processing (IP) and broadcasting. We extract simple and detailed generalized average bit error rate (ABER) expressions for BFSK, BPSK, QPSK, and 4-PAM for the Consider scheme. The derived expressions are applicable to any coherent modulation scheme.
CureCancer Digital Platform In The Routine Clinical Oncology Practice Facilitates Patients’ Self-Data Recording, Communicating With Health Care Professionals, Treatment Adherence And “Distancing Interventions” During Covid-19 And Reduces Costs. A Feasibility And Satisfaction Study*.
Authors: Galiti Dimitra , Linardou Helena , Agelaki Sofia , Karampeazis Athanasios , Tsoukalas Nikolaos , Psyrri Amanda , Karamouzis Michalis , Syrigos Konstantinos , Ardavanis Alexandros , Athanasiadis Ilias , Arvanitou Eleni , Sgourou Stavroula , Kouloulias Vasileios , Mala Anastasia , Vallilas Christos , Boukovinas Ioannis 
Published: July 2021

Abstract
Purpose: We assessed CureCancer’s feasibility and patients’ and HCPs’ satisfaction. CureCancer is a patient-centric/driven platform, which enables patients to self-create their profile, report symptoms and communicate with physicians.Methods: Patients from 18 Centers were asked to register at CureCancer, upload their data and complete a questionnaire on demographics, disease and treatment characteristics, and their satisfaction. Results: 159 patients were enrolled and 144 (90.6%) registered. 114 of 144 (79.1%), 63 males and 51 females, median age 54.5 years, completed the questionnaire. 64 patients were University and 35 were high School graduates. 46 patients had metastatic disease, 87 were on active treatment and 51 received supportive care. All patients also visited non-oncology HCPs. Nineteen patients changed work status and 49 had children below 24 years. Registration was “very/very much” easy for 98 (86.0 %) patients. File uploading was “very/very much” easy for 47 (41.2%) patients. Over 80% of patients and physicians preferred the digital way. 99 patients and all HCPs will recommend CureCancer to others. Easy data access, improved communication, feeling safe, treatment adherence, interventions from distance, particularly during covid-19 pandemic and saving time and money, were highly commented by patients and HCPs. Conclusion: CureCancer was feasible and patients and HCPs were satisfied. File uploading changed to become more user friendly. Integration of CureCancer in the routine practice is expected to improve cancer care and reduce cancer costs. Patients’ self-reporting, with CureCancer, can increase the accuracy of clinical trial results and map social/work/economic issues following cancer diagnosis to assist health care policy.