bluuebunny/crossref_metadata_2025_split huggingface dataset:
Quantifying Senior High School Students’ Satisfaction in the Implemented Modular Distance Learning
Authors: Coros Joenel D. 
Published: March 2022

Aims: The absence of data that could inform education stakeholders on what demographic variables play a significant role in the implementation of modular distance learning (MDL) and on areas of it, so that programs and innovations may be initiated to improve its implementation, encouraged the conduct of the study. The study aimed to assess the level of satisfaction in MDL of Senior High School Students’ as a whole, and in areas of Content of Self-Learning Modules, Teacher-Support, Parental Support, and Assessment and Feedbacking. It also seeks to determine in which demographic variables their level of satisfaction exist and whether their satisfaction has a correlation with parents' highest educational attainment or none.
Methodology: This study utilized descriptive-comparative and descriptive-correlational design. It was participated by 346 Senior High School Students drawn through multi-stage sampling. Generated data were analyzed using mean, standard deviation, Mann-Whitney U test, and Spearman rho rank correlation.
Results: Results have shown that senior high school students are generally satisfied with the implementation of modular distance learning. Inferential results revealed that a significant difference exists between grade levels (P=.013). There was no significant difference when students were grouped according to track (P=.34), and availability of gadgets for academic use (P=.12). Interestingly, findings show that parents’ highest educational attainment influenced students' level of satisfaction (P=.000) in modular distance learning.
Conclusion: The study concluded that instructional and academic support provided by teachers and parents of Senior High School students remains vital, regardless of their grade level. Furthermore, the experiences they have in the implementation of MDL, which lead to their satisfaction or non-satisfaction in its implementation may be associated with their parent's level of education.
The Effects of Poor Financial Condition to Needy Students of Private and Public Colleges of Mafinga Town Council, Iringa Tanzania
Authors: Abdallah Ahmed Ally , Msambila Amos Ansigary , Kapange Solomon 
Published: March 2022

The study was conducted to find out the effects of poor financial condition to needy students of private and public colleges in Mafinga Town Council, Iringa Tanzania. The study used a cross-sectional study design based on mixed research approach. Primary data were collected using questionnaires, interviews and focus group discussions while secondary data were obtained through documentary reviews. Both purposive and random sampling techniques were used in selecting 30 respondents and 10 key informants for this study. The collected data were analysed using SPSS Version 20 to compute descriptive statistics such as percentages and frequencies while the results were presented in the form of tables and word text narration. The study found that inability to pay tuition fees, inability to meet basic needs (food, clothing, and accommodation), inability to buy books and supplies, inability to meet medical emergencies, college dropout, affect academic performance and taking much more time to stay in college and complete studies were found to be the major effects of poor financial conditions of needy students.
The study recommended that, the government and other agencies should establish entreprenuership education to the college students particularly to the needy students so as to develop business activities while learning without affect their academic performance, offering financial literacy from which students will have the ability to read, analyzed, manage and communicate personal financial conditions that affect their well-being, giving them learning materials and special scholarship to those who are willingly to learn with monitoring them during entire period of their learning.
Principal's Strategy in Developing Teacher Work Motivation
Authors: Wibowo Ari , Hasanah Enung 
Published: March 2022

Aims: This study aims to explore the role of school principals in increasing teacher motivation to work professionally.
Study Design: This research is a qualitative research
Place and Duration of Study: Researchers conducted research at SD Aisyiyah Surya Ceria Karanganyar with the address Tegalasri RT. 5 RW. VI Bejen-Karanganyar, Central Java. This research was conducted around August 2021 to january 2022
Methodology: The researcher determines the research subject using purposive sampling technique, there are 3 participants including the principal, vice principal for curriculum affairs and 1 teacher. The criteria used to determine the selection of participants are based on structural positions in school and years of service. This study took data using interview and documentation techniques. The researcher checks the validity of the data using triangulation of sources and techniques and the researcher uses data analysis techniques with stages starting from reducing data, presenting data and drawing conclusions
Results: The results show that the principal's role in growing teacher motivation is by optimizing the supporting factors and minimizing obstacles in order to motivate teachers by implementing the strategy, namely; 1) giving awards 2) giving encouragement, direction and coaching, 3) giving authority to teachers to be active, innovative and creative, 4) giving appreciation to teacher achievements, 5) organizing outbound and picnics, 6) exemplary, 7) training, 8 ) fulfillment of facilities and infrastructure, and 9) comparative study.
Predictors of Bleeding Risks and Episodes in Heart Patients
Authors: Iqbal Muhammad Zahid , Kassab Yaman W. , Salih Ahmed Abdelrahman Gadelseed , Matias Winsthon Carpo , Kaur H. Jaasminerjiit , Iqbal Muhammad Shahid 
Published: March 2022

Objective: The aim of this study was to determine predictors of bleeding risks and episodes in heart patients. This study also determined the effect of demographic characteristics and comorbidities on the bleeding episodes in heart patients.
Methods: A retrospective and observational study was done on a data collection form to obtain the required data. After adjusting confounders in logistic regression analysis model, (predicting likelihood of reporting bleeding risks and episodes), pure predictors of bleeding risks and episodes were determined. Descriptive and inferential statistics were applied using the Statistical Package for Social Sciences (SPSS) version 24.0. A p-value < 0.05 was considered statistically significant.
Results: Overall, 220 patients’ data on data collection forms were collected in the study. Out of the total studied patients, around 56 were on warfarin, 47 on dabigatran, 67 on rivaroxaban and 50 on apixaban. In addition, age and presence of comorbidity were observed as the pure and strong predictors of bleeding risks and episodes among the studied patients.
Conclusion: Age and presence of comorbidity were the pure and strong predictors of bleeding risks and episodes.
A Study Protocol for Evaluation of Clinical and Functional Outcomes of Forearm Bone Fractures Treated by Screw Intramedullary Nail
Authors: Shah Parth , Dhaniwala Nareshkumar 
Published: March 2022

Background: The incidence of forearm fractures has increased rapidly over the past few years as a consequence of industrial accidents, interpersonal assaults, road traffic accidents, sports injuries, etc. The advantages of Closed or mini-open reduction using screw intramedullary nail and stable fixation include short duration and low-cost of surgery, 3 point fixation, and satisfactory union of the fracture. This study aims to assess the clinical, radiological, and functional outcomes of forearm bone fractures treated by Screw intramedullary nails.
Materials and Methods: This will be a Prospective Observational study conducted on 25 skeletally mature patients reporting to the dept. of Orthopedics, AVBRH, Wardha. Patients with fracture of radius and ulna together or single bone diaphyseal fracture in the forearm will be enrolled in the study. The findings will be analyzed using parameters proposed by Anderson et. al. scoring system for functional assessment and radiological union. Statistical analysis would be done to conclude the findings.
Expected Results: Significant clinical, radiological, and functional outcomes of forearm bone fractures treated by Screw intramedullary nail are expected.
Red Tea Mediated Synthesis and Characterisation of Copper Nanoparticles
Authors: Akshaya K. , Rajasekar Arvina , Rajeshkumar S. 
Published: March 2022

Background: The synthesis of metallic nanoparticles is a lively area of education and, more importantly, “application research” in nanotechnology. A wide range of chemical and physical procedures might be used for synthesis of metallic nanoparticles. However, these methods are swarming with many problems including use of toxic solvents, generation of hazardous by-products, and high energy consumption. Accordingly, there's a vital need to develop environmentally benign procedures for synthesis of metallic nanoparticles. A promising approach to realize this objective is to take advantage of the wide array of biological resources in nature. Indeed, over the past several years, plants, algae, fungi, bacteria, and viruses have been used for production of low-cost, energy-efficient, and nontoxic metallic nanoparticles.
Aim: The aim of the current study was to synthesise and characterize the copper Nanoparticles mediated with red tea.
Materials and Methods: ​The green synthesis of the copper Nanoparticles was done using red tea. Morphological characters like the shape and size of the obtained copper nanoparticles were done by transmission electron microscopy (TEM).
Results: The results confirmed that the synthesised red tea mediated nanoparticles are eco-friendly, good and non toxic. TEM images showed that the copper nanoparticles were well dispersed, crystalline in nature. Copper nanoparticles are spherical in nature. The particles size was ranging from 40 to 90 nm, The TEM image shows that nanoparticles are not combined but are separated by equal interspace between the particles, which was confirmed by microscopy visualising under the higher resolution.
Conclusion: ​In this study, a simple, biological and low-cost approach was done for the preparation of copper nanoparticles using red tea extract. Thus the green synthesized copper nanoparticles can be subjected to the various other biological activities to test their biological efficiency and can be a pioneering step towards the shift to eco friendly medicine.
Evidence of Risk Factors Associated with Autosomal Dominant Polycystic Kidney Disease in Newly Diagnosed Adult Hypertensive Patients in NAUTH Nnewi, Nigeria
Authors: Ukibe Nkiruka R. , Kalu Anya O. , Emeje Isaac P. , Ukibe Solomon N. , Ukibe Gloria E. , Obiekezie Chigozie C. 
Published: March 2022

Aims & objectives: Due to other chronic diseases that are associated with hypertension and kidney disease, little or no attention has been paid to the existence of polycystic kidney disease in Nigeria. The present study aimed at assessing the prevalence of some risk factors of ADPKD among hypertensive adult patients in NAUTH, Nnewi, Anambra State, Nigeria
Study design: A cross-sectional and prospective study
Place and Duration of Study: The study was carried out at Medical out-patient, cardiology and nephrology units of NAUTH Nnewi between February and June, 2019.
Methodology: A total of 160(80 newly diagnosed hypertensive and 80 normotensive subjects) aged between 25-75 years were randomly selected. Estimation of serum electrolytes, urea, creatinine, total calcium, eGFR and total protein, BMI and waist-hip ratio of the subjects were taken were done using standard laboratory methods.
Results: 12.5% of the hypertensive subjects have undergone dialysis, 7.5% had kidney transplant, 13.8% had hematuria, 20% had proteinuria, 27.5% had recurrent kidney infection, 15% had kidney stone, 43.8% experienced abdominal/side pain, 20% have had abdominal hernias and 46.3% had elevated urea/creatinine. Mean values of age, BMI and WHR were significantly higher in hypertensive than control subjects (p =.05). Similarly, serum creatinine, urea, sodium and chloride were significantly higher with lower eGFR in hypertensive when compared with control group (p =.05). eGFR in female was significantly lower compared with male hypertensive (p = .05). The mean SBP and DBP were significantly higher in hypertensive compared with control group (p = .05).
Conclusion: 30% of the hypertensive subjects had multiple signs and symptoms of ADPKD, suggesting evidence of high prevalence of ADPKD in the hypertensive patients. Routine screening of family members with hypertension and symptomatic cases of hypertension using ultrasound imaging is strongly recommended for confirmation of presence PKD.
Empreendedorismo e Transferência Tecnológica: uma análise da atuação das incubadoras de empresas da Amazônia
Authors: De Oliveira Márcio Luis Góes , Filho Cirilo Simões , Mendonça Cláudio Márcio Campos de , Júnior Walter Teixeira Lima 
Published: March 2022

Transferência tecnológica (TT) é um processo de troca de conhecimentos e habilidades tecnológicas entre organizações. Há diversos instrumentos para a viabilização da TT, entre elas as incubadoras de empresas, organismos que têm como missão o fortalecimento da cultura empreendedora, associadas à política de inovação das ICTs. Assim, este artigo objetivou analisar como as incubadoras de empresas da Amazônia atuam para apoiar a transferência das tecnologias dos empreendimentos incubados. A abordagem ao problema foi qualitativa e quantitativa, com estudo de casos. Utilizou-se como referência as incubadoras membros da Associação Nacional de Entidades Promotoras de Empreendimentos Inovadores (ANPROTEC). Os sites institucionais das incubadoras pouco têm detalhado como funcionam os processos de apoio à transferência tecnológica e também a descrição dos instrumentos de negociação, valoração e prontidão tecnológica (TRL). Um ponto relevante refere-se ao uso de parcerias no processo de TT como solução para limitações das ICTs amazônicas.
Topological Materials for Functional Optoelectronic Devices
Authors: Chorsi Hamid , Cheng Bing , Zhao Bo , Toudert Johann , Asadchy Viktar , Shoron Omor F. , Fan Shanhui , Matsunaga Ryusuke 
Published: March 2022

AbstractThe recent realization of topology as a mathematical concept in condensed matter systems has shattered Landau's widely accepted classification of phases by spontaneous symmetry breaking as he famously said, “a particular symmetry property exists or does not exist.” Topological materials (TMs) such as topological insulators and topological semimetals, are characterized by properties that depend on the topology of the band structure. Such dependence has drastic implications on the optical, electrical, and thermal properties of the material. Fundamental physics of TMs is currently under active research in condensed matter, materials science, and high energy physics. In this review, recent advances in exploiting the unique properties of TMs to realize functional optoelectronic devices are surveyed. Current and future applications that are, or may be, enabled by their unique properties are discussed. Although many theoretical ideas have been proposed over the past decade or so on using TMs in optoelectronic applications, the focus will be on experimentally realized devices.
Tunable Planar Focusing Based on Hyperbolic Phonon Polaritons in α‐MoO3
Authors: Qu Yunpeng , Chen Na , Teng Hanchao , Hu Hai , Sun Jianzhe , Yu Renwen , Hu Debo , Xue Mengfei , Li Chi , Wu Bin , Chen Jianing , Sun Zhipei , Liu Mengkun , Liu Yunqi , García de Abajo F. Javier , Dai Qing 
Published: March 2022

AbstractManipulation of the propagation and energy‐transport characteristics of subwavelength infrared (IR) light fields is critical for the application of nanophotonic devices in photocatalysis, biosensing, and thermal management. In this context, metamaterials are useful composite materials, although traditional metal‐based structures are constrained by their weak mid‐IR response, while their associated capabilities for optical propagation and focusing are limited by the size of attainable artificial optical structures and the poor performance of the available active means of control. Herein, a tunable planar focusing device operating in the mid‐IR region is reported by exploiting highly oriented in‐plane hyperbolic phonon polaritons in α‐MoO3. Specifically, an unprecedented change of effective focal length of polariton waves from 0.7 to 7.4 μm is demonstrated by the following three different means of control: the dimension of the device, the employed light frequency, and engineering of phonon–plasmon hybridization. The high confinement characteristics of phonon polaritons in α‐MoO3 permit the focal length and focal spot size to be reduced to 1/15 and 1/33 of the incident wavelength, respectively. In particular, the anisotropic phonon polaritons supported in α‐MoO3 are combined with tunable surface‐plasmon polaritons in graphene to realize in situ and dynamical control of the focusing performance, thus paving the way for phonon‐polariton‐based planar nanophotonic applications.
Ultrathin Membranes for Separations: A New Era Driven by Advanced Nanotechnology
Authors: Zhang Shiyu , Shen Liang , Deng Hao , Liu Qinze , You Xinda , Yuan Jinqiu , Jiang Zhongyi , Zhang Sui 
Published: March 2022

AbstractUltrathin membranes are at the forefront of membrane research, offering great opportunities in revolutionizing separations with ultrafast transport. Driven by advanced nanomaterials and manufacturing technology, tremendous progresses are made over the last 15 years in the fabrications and applications of sub‐50 nm membranes. Here, an overview of state‐of‐the‐art ultrathin membranes is first introduced, followed by a summary of the fabrication techniques with an emphasis on how to realize such extremely low thickness. Then, different types of ultrathin membranes, categorized based on their structures, that is, network, laminar, or framework structures, are discussed with a focus on the interplays among structure, fabrication methods, and separation performances. Recent research and development trends are highlighted. Meanwhile, the performances and applications of current ultrathin membranes for representative separations (gas separation and liquid separation) are thoroughly analyzed and compared. Last, the challenges in material design, structure construction, and coordination are given, in order to fully realize the potential of ultrathin membranes and facilitate the translation from scientific achievements to industrial productions.
High‐Efficiency ITO‐Free Organic Photovoltaics with Superior Flexibility and Upscalability
Authors: Zheng Xiangjun , Zuo Lijian , Zhao Feng , Li Yaokai , Chen Tianyi , Shan Shiqi , Yan Kangrong , Pan Youwen , Xu Bowei , Li Chang‐Zhi , Shi Minmin , Hou Jianhui , Chen Hongzheng 
Published: March 2022

AbstractDeveloping indium‐tin‐oxide (ITO)‐free flexible organic photovoltaics (OPVs) with upscaling capacity is of great significance for practical applications of OPVs. Unfortunately, the efficiencies of the corresponding devices lag far behind those of ITO‐based rigid small‐area counterparts. To address this issue, an advanced device configuration is designed and fabricated featuring a top‐illuminated structure with ultrathin Ag as the transparent electrode. First, a conjugated polyelectrolyte layer, i.e., PCP‐Li, is inserted to effectively connect the bottom Ag anode and the hole transport layer, achieving good photon to electron conversion. Second, charge collecting grids are deposited to suppress the increased resistance loss with the upscaling of the device area, realizing almost full retention of device efficiency from 0.06 to 1 cm2. Third, the designed device delivers the best efficiency of 15.56% with the area of 1 cm2 on polyimide substrate, representing as the record among the ITO‐free, large‐area, flexible OPVs. Interestingly, the device exhibits no degradation after 100 000 bending cycles with a radius of 4 mm, which is the best result for flexible OPVs. This work provides insight into device structure design and optimization for OPVs with high efficiency, low cost, superior flexibility, and upscaling capacity, indicating the potential for the future commercialization of OPVs.
Ultrafast Electro‐Absorption Switching in Colloidal CdSe/CdS Core/Shell Quantum Dots Driven by Intense THz Pulses
Authors: Gollner Claudia , Jutas Rokas , Kreil Dominik , Dirin Dmitry N. , Boehme Simon C. , Baltuška Andrius , Kovalenko Maksym V. , Pugžlys Audrius 
Published: March 2022

AbstractNext‐generation high‐speed optical networks demand the development of ultrafast optical interconnects capable of Tbit s−1 data rates. By utilizing colloidal CdSe/CdS core/shell quantum dots, gated by intense THz pulses, a proof of concept of an all‐optical femtosecond electro‐absorption switch is presented in this work. Without any additional enhancement of the THz electric field, an extinction contrast of more than 6 dB and transmission changes in the visible of more than 15% are achieved, with the latter setting a new record for solution‐processed electro‐absorption materials at room temperature. The absence of physical artifacts, originating from electrodes and field enhancing structures, allows to employ a simple and intuitive numerical model, which rationalizes the large field‐induced electro‐absorption response. Supported by theoretical calculations, the importance of the energy band alignment of heterostructure quantum dots are discussed for the first time and suggest that further improvement of the modulation depth and contrast may be achieved with Type‐II quantum dots.
Cadmium‐Doped Zinc Sulfide Shell as a Hole Injection Springboard for Red, Green, and Blue Quantum Dot Light‐Emitting Diodes
Authors: Liu Bochen , Guo Yue , Su Qiang , Zhan Yunfeng , Chen Zhao , Li Yang , You Baogui , Dong Xiaonan , Chen Shuming , Wong Wai‐Yeung 
Published: March 2022

AbstractA new strategy is developed in which cadmium‐doped zinc sulfide (CdZnS) is used as the outermost shell to synthesize red, green, and blue (RGB) quantum dots (QDs) with the core/shell structures of CdZnSe/ZnSe/ZnS/CdZnS, CdZnSe/ZnSe/ZnSeS/CdZnS, and CdZnSe/ZnSeS/ZnS/CdZnS, respectively. Firstly, the inner ZnS and ZnSe shells confine the excitons inside the cores of QDs and provide a better lattice matching with respect to the outermost shell, which ensures high photoluminescence quantum yields of QDs. Secondly, the CdZnS shell affords its QDs with shallow valence bands (VBs). Therefore, the CdZnS shell could be used as a springboard, which decreases the energy barrier for hole injection from polymers to QDs to be below 1.0 eV. It makes the holes to be easily injected into the QD EMLs and enables a balanced recombination of charge carriers in quantum dot light‐emitting diodes (QLEDs). Thirdly, the RGB QLEDs made by these new QDs exhibit peak external quantum efficiencies (EQEs) of 20.2%, 19.2%, and 8.4%, respectively. In addition, the QLEDs exhibit unexpected luminance values at low applied voltages and therefore high power efficiencies. From these results, it is evident that CdZnS could act as an excellent shell and hole injection springboard to afford high performance QLEDs.