bluuebunny/crossref_metadata_2025_split huggingface dataset:
Pengaruh Model Problem Based Learning dengan Scaffolding Learning Activities terhadap Kemampuan Memecahkan Masalah Siswa
Authors: Yuliawanti Esti , Suciati Suciati , Ariyanto Joko 
Published: March 2021

<p class="5abstrak">The aim of this research is to know the influence of problem based learning model with scaffolding learning activities toward student’s problem solving skill. This research was a quasi-experiment research. The research was design using pretest-postes with non equivalent group design. The experiment class was used problem based learning model with scaffolding learning activities while the control class used conventional learning method. The population of this research were all students in X class of SMA Islam 1 Surakarta in academic year 2015/ 2016. Sampling techniques used cluster random sampling. The data was collected using essay test, multiple choice test of Problem Solving Skill Test (PSST) and observation sheet. The data were analyzed by t-test.</p><p class="5abstrak">Based on the calculation of the t test on the problem solving skill obtained t value 0,000 with the Sig .&lt; 0.05. Problem solving skill mean result from experiment class is 56.12 while control class is 48.29.</p>Based on the research it can be concluded that problem solving skill problem based learning model with scaffolding learning activities affect student’s problem solving skill.
PENINGKATAN KUANTITAS DAN KUALITAS PERTANYAAN PESERTA DIDIK MELALUI PENERAPAN MODEL PROJECT BASED LEARNING PADA PEMBELAJARAN BIOLOGI
Authors: Alifa Fadhilla Cahya , Widoretno Sri , Ariyanto Joko 
Published: March 2021

<p><em>This research aimed to enhance quantity and quality of student’s questions </em><em>in biology </em><em>at grade X MIPA 1 of</em><em> </em><em> SMAN 7 Surakarta academic year 2014/2015 through the implementation of project based learning.</em><em> </em><em></em></p><p><em>This research was a Classroom Action Research which consisting of planning, acting, observing, and reflecting. Subject of the research was grade X MIPA 1 of SMAN 7 Surakarta academic year 2014/2015, consisting of 28 students.</em> <em>Data were collected through observation, interview, and video recording, then its collected based on revised Bloom’s Taxonomy. Data were analyzed describe qualitatively. Data were validated using triangulation methods. Research procedure using spiral model.</em></p><p><em>The result of the research showed that quantity and quality of student’s questions enhance from Preaction, Cycle I, and Cycle II. Quantity of student’s questions enhance from 24 to </em><em>180</em><em> questions.</em> <em>Quality of students’ questions enhanced from the factual, conceptual, and procedural dimension at the C1, C2, and C3 become the factual, conceptual, procedural and metacognition dimension at the C1, C2, C3, C4, C5, and C6.</em><em> </em><em></em></p><p><em>Based on the data analysis result, it can be concluded that the implementation of project based learning is able to enhance quantity and quality of student’s questions</em><em> in biology</em><em> at grade X MIPA 1 of SMAN 7 Surakarta academic year 2014/2015.</em></p>
PENERAPAN PROBLEM BASED LEARNING UNTUK MENINGKATKAN AKTIVITAS BELAJAR DAN HASIL BELAJAR BIOLOGI SISWA
Authors: Subekti Tami , Suwarto Suwarto , Nugroho Anwari Adi 
Published: March 2021

<p class="5abstrak">This study aims to improve student activity and learning outcomes by using the Problem Based Learning (PBL) model in the XI grade of Mathematics and Natural Sciences at Veterans 1 Sukoharjo in the 2018/2019 academic year. This type of research is Classroom Action Research (CAR) which consists of 3 cycles, each cycle including planning, implementing, observing, reflecting. Data collection techniques using 1) observations, 2) assessment tests, 3) student observation sheets and 4) documentation. The results showed that the learning activities of cycle I were 21%, cycle II 60%, and cycle III 86%. Learning outcomes show that the first cycle was 47% (11 students), second cycle was 65% (15 students), and third cycle was 83% (19 students). Based on the results of the study it can be concluded that the PBL model can increase learning activities and biology learning outcomes in class XI students of Veterans 1 Sukoharjo.</p><p class="5abstrak"><em> </em></p><p class="5abstrak"><strong><br /></strong><strong></strong></p>
El talento humano, una perspectiva desde la gerencia en las mipymes
Authors: Silva-Giraldo Cesar Augusto , Dugarte-Mendoza Juan Sebastián , Rueda-Mahecha Yohanna Milena 
Published: March 2021

Rev.esc.adm.neg
El estudio que da origen a este artículo se realizó con el fin de analizar la percepción de la gerencia con relación a la gestión del talento humano en las mipymes. Para el análisis se utilizó una investigación de tipo descriptiva con un enfoque mixto y un diseño transversal no experimental; y se estableció como población objeto de estudios a los propietarios, gerentes y directivos de las mipymes ubicadas en los municipios de Bucaramanga, Floridablanca, Girón y Piedecuesta del departamento de Santander, Colombia. Finalmente se hizo una selección de muestra poblacional de mil veinticinco individuos que ocupan los cargos establecidos dentro de la población objeto. Destacando factores positivos y negativos que se dan en la gestión del personal, e impactan la mejora de la relación entre las directivas y colaboradores, se pudo establecer una serie de postulados y supuestos de acuerdo a las variables analizadas. Además, teniendo en cuenta los estudios consultados y los resultados, se resalta que gran parte de la relación entre las partes se define a partir de la visión de responsabilidad, lealtad, capacidad, clima laboral, condición salarial y participación de los colaboradores en las decisiones de la organización. Lo que en su conjunto permite mejorar las condiciones de efectividad y eficiencia organizacional y por tanto, su competitividad.
La conducta financiera entre estudiantes universitarios emprendedores
Authors: Décaro-Santiago Laura Angélica , Soriano-Hernández María Guadalupe , Benítez-Guadarrama Juan Pedro , Soriano-Hernández Juana Gabriela 
Published: March 2021

Rev.esc.adm.neg
Para reducir parte de las barreras del emprendimiento y disminuir los índices de mortandad de las empresas de nueva creación, es necesario generar estrategias que fomenten decisiones en temas de finanzas personales entre los estudiantes universitarios, de manera más consciente y precisa. Teniendo en cuenta que el papel de las instituciones de educación superior es determinante para fortalecer dicha capacidad, el objetivo de esta investigación es explorar la conducta financiera de los estudiantes universitarios de dos centros universitarios de la Universidad Autónoma del Estado de México (UAEM). Esto al hacer la distinción entre aquellos que son emprendedores, emprendedores potenciales y aquellos que no los son, con la finalidad de identificar conductas en temas de crédito, ahorro y administración del dinero, sin olvidar los niveles de inclusión en el sistema financiero formal. La recolección de los datos se obtuvo a través de la aplicación de un cuestionario de preguntas cerradas. La muestra se conformó con 518 estudiantes de Administración, Contaduría, Derecho, Psicología, Ingeniería en Computación e Informática. Se utilizaron herramientas de medición tales como frecuencias y pruebas de asociación de variables de la estadística descriptiva. Entre los principales resultados se identifica que el 14,5 % de los estudiantes son emprendedores, mientras que el 69,7 % son emprendedores potenciales. Además, se identifica dependencia del estatus del emprendimiento con la inclusión al crédito formal, el pago de tarjetas de crédito, el pago a tiempo de las cuentas, el análisis del gasto hormiga, el registro de los gastos y la asignación de recursos.
Estrategias de aprendizaje organizacional y tecnologías de la información y las comunicaciones para apoyar la gestión de conocimiento en las pymes del Valle del Cauca, Colombia
Authors: Bermúdez-Arango Adriana Patricia , Cuéllar-Torres Carlos Julián , Riascos-Erazo Sandra Cristina 
Published: March 2021

Rev.esc.adm.neg
La evolución en la sociedad ha conllevado a la consolidación de la economía del conocimiento, en la que las pymes se enfrentan al desafío de gestionar de forma adecuada el know how de la organización, para lo cual existen diversas prácticas organizacionales que facilitan este proceso. Teniendo en cuenta lo anterior, el artículo tiene como objetivo proponer una serie de estrategias que les permitan a las pymes fortalecer la gestión del conocimiento desde su relación con el aprendizaje organizacional y las tecnologías de la información y las comunicaciones (TIC). Este estudio se desarrolló a través de la aplicación de una encuesta estructurada con preguntas cerradas, dirigidas a los gerentes o líderes de 117 pymes del Valle del Cauca. Entre los principales resultados de la investigación se evidencia la carencia de un área formal para la gestión del conocimiento, y que las pymes cuentan con procesos colaborativos que facilitan compartir el conocimiento entre los miembros de la organización. Sin embargo, no se han establecido mecanismos formales e institucionales para la transferencia de conocimiento que permita una adecuada documentación y su correcto almacenamiento. Así mismo, existe una debilidad en la falta de cultura organizacional que fomente y facilite este intercambio de conocimiento, por lo cual se proponen algunas estrategias, como, por ejemplo, mejorar los mecanismos y las prácticas de transferencia y la implementación de plataformas virtuales de aprendizaje, entre otras.
Changes in Anterior Chamber Angle and Pupillary Diameter after Implantation of a New Posterior Chamber Phakic Intraocular Lens
Authors: Sucu Mehmet Emin , Akbaş Yusuf Berk , Agca Alper , Demir Gökhan 
Published: March 2021

Abstract
Purpose: To evaluate the effect of the Eyecryl posterior chamber phakic intraocular lens (pIOL) on iridocorneal angle (ICA) parameters, anterior chamber depth (ACD), and pupillary size.Methods: The medical files of myopic patients who had implantation of the Eyecryl posterior chamber pIOL were reviewed retrospectively. Trabecular-iris space area at 500 and 750μm (TISA500, TISA750), angle opening distances at 500 and 750μm (AOD500, AOD750), anterior chamber depth (ACD), iridocorneal angle (ICA), and pupil diameter under different illumination conditions were analyzed preoperatively, and at 1 and 3 months postoperatively.Results: Ninety-three eyes of 48 patients were included in the study. The mean age of patients was 31.63 ±4.95 years (range, 21-54). The mean ICA decreased from 49.97° ± 6.33 before surgery to 30.75° ± 5.86 and 30.79° ± 5.74 at 1 and 3 months after surgery, respectively. The mean ACD was reduced from 3.23 ± 0.22 mm before surgery to 2.55 ± 0.34 mm and 2.46 ± 0.28 mm at 1 and 3 months after surgery, respectively. TISA500, TISA750, AOD500, and AOD750 were also reduced significantly after surgery. The mean pupil size under photopic, mesopic and scotopic illuminations decreased insignificantly by 1 month and continued to decrease significantly by 3 months after surgery.Conclusion: The implantation of the Eyecryl posterior chamber pIOL in myopic patients caused significant changes in anterior chamber parameters including ICA, ACD, TISA 500, TISA 750, AOD 500, AOD 750, and the pupil diameter under different illumination conditions.
Folate deficiency in early pregnancy increases the risk of low birth weight: survey of neonates in eastern China
Authors: Chen Yisheng , Ying Chunmei 
Published: March 2021

Abstract
Background

Low birth weight (LBW) is a major cause of fetal mortality and morbidity. This study aims to assess the relationship between maternal serum folate levels and LBW in early pregnancy in eastern China.
Methods

We conducted a retrospective study including 124 newborns with LBW (born ≥ 1500g to < 2500 g) and 393 normal birth weight neonates (NBW). The maternal methylenetetrahydrofolate reductase (MTHFR) C677T polymorphism genotyping was performed by the gene chip hybrid method. The concentrations of serum homocysteine (hcy), folate, vitamin B12 and vitamin D were measured before 18 weeks of pregnancy. Multivariable logistic regression model was used to identify the predictors of LBW.
Results

After controlling the covariates, maternal underweight before pregnancy (AOR = 5.15: 95% CI 2.40, 11.05), folate deficiency in early pregnancy (AOR = 2.06: 95% CI 1.03, 4.09), preeclampsia during pregnancy (AOR = 6.02: 95% CI 2.83, 12.81), and premature delivery (AOR = 23.81: 95% CI 12.90, 43.95) were risk factors for LBW. However, multipara (AOR = 0.53:95% CI 0.31, 0.91) was a protective factor for LBW.
Conclusions

This study revealed different factors associated with LBW in eastern China. Sufficient folate before 18 weeks of pregnancy is a protective factor for LBW. Serum folate > 32.5 nmol/L can reduce the risk of LBW. Therefore, maternal screening of folate statue in the first trimester of pregnancy could be helpful.
Predictable clinical benefits without synergy in trials of combination therapies with immune checkpoint inhibitors
Authors: Palmer Adam (C.) , Izar Benjamin , Hwangbo Haeun , Sorger Peter 
Published: March 2021

Abstract
Hundreds of clinical trials are currently underway testing combinations of Immune Checkpoint Inhibitors (ICIs) with other cancer therapies in the hope that drug combinations will be more effective than monotherapy. Enhanced efficacy is proposed to result from drug additivity or synergy involving mechanisms such as immune priming. In this paper we re-analyze progression free survival data from thirteen recent Phase III trials of ICI combinations and find that observed benefits are fully and accurately accounted for by an increased chance that each patient will respond to a single-agent, consistent with the predictions of drug independence, with no requirement for additive or synergistic efficacy. Thus, the likely anti-tumor efficacy of new ICI combinations can be reliably predicted from monotherapy data (Pearson r=0.98, P < 5×10-9, n = 4173 patients and 8 types of cancer), although predicting adverse effects is not yet possible. Realizing the clinical potential of drug additivity or synergy is likely to require biomarkers that identify patients in whom multiple constituents of a drug combination are active.
Clinical Research on Lens Cortex Removal Assisted by Hydropolish
Authors: Yao Lin , Bai Haiqing 
Published: March 2021

Abstract
Background: This retrospective study investigated the efficiency and safety of lens cortex removal assisted by a fluid-based capsular polishing technique, hydropolish. Study design: Prospective case series.Methods: Sixty patients were included in this study. All these patients underwent phacoemulsification cataract surgery using different sequences of surgical steps and were divided into two groups; hydropolish before irrigation/aspiration (I/A) (Group 1, 30 eyes) and I/A before hydropolish (Group 2, 30 eyes). Hydropolish and I/A cortex time, and time of the entire procedure were noted. Results: The hydropolish time was longer in group 1 than that in group 2 (P ≤ 0.001). The I/A cortex time and hydropolish and I/A cortex time together were not different between the two groups (P = 0.294 and P = 0.258, respectively). However, the time of the entire procedure was shorter in group 1 (P = 0.002). Conclusions: Lens cortex removal assisted by hydropolish is a safe, time saving, and simple surgery.
Experiences with scans and scanxiety in people with advanced cancer: A qualitative study
Authors: Bui Kim Tam , Blinman Prunella , Kiely Belinda E , Brown Chris , Dhillon Haryana M 
Published: March 2021

Abstract
Purpose: Scan-associated anxiety (‘scanxiety’) in people with advanced cancer is a common clinical problem. This study aims to explore the experiences of scans and scanxiety in people with advanced cancer, including their strategies to reduce scanxiety.Methods: Semi-structured qualitative interviews were conducted with people with advanced cancers who had a computed tomography scan for monitoring of their cancer. Data was analysed with an interpretivist approach using framework analysis. Results: Interviews with 16 participants identified three key themes: the scan experience, the scanxiety experience and coping with scans. Scans and scanxiety were viewed as a routine and normal part of cancer care, though this was experienced differently by each person. Scanxiety often related to the scan result rather than the scan, and lead to psycho-cognitive manifestations. Adaptive coping strategies were often self-derived.Conclusion: People with advanced cancer experience scanxiety, but often accept scanxiety as a normal part of the cancer process. The findings fit within a transactional model of stress and coping, which influences the level of scanxiety for each individual. Quantitative research to determine the scope of scanxiety will be useful to develop formal approaches to reduce scanxiety.
Association of Mammographic Density Reduction with Hormone Therapy and Relapse in Asian Breast Cancer Patients: A Multivariate Survival Analysis
Authors: Shia Wei-Chung , Wu Hwa-Koon , Lin Li-Sheng , Chen Dar-Ren 
Published: March 2021

Abstract
Purpose Currently, the ability to predict the development of resistance to hormone therapy (HT) in breast cancer patients is suboptimal, and attempts are ongoing to develop more specific prognostic markers for endocrine resistance. Several studies have shown that mammographic breast density is an important predictor of outcomes following adjuvant HT. This study aimed to evaluate HT-induced mammographic density (MD) reduction (MDR) and its association with relapse and metastasis in Taiwanese patients.MethodsIn this retrospective study conducted at the Changhua Christian Hospital, 1553 breast cancer patients were screened. Of these, 399 with luminal-like cancer who were first diagnosed between January 2011 and December 2017 and had received adjuvant HT (include treatment with tamoxifen, aromatase inhibitor or mixture) were enrolled. The mean follow-up period for all patients was 1847 days (median follow-up period was 1815 days). The MD was measured as a percentage using the automatic volumetric mammographic density estimation.ResultsWe found the MDR equally 20.8% which MD measured was before and after surgery and HT during 6 to 18 months was a significant cut-off threshold for good or pool diagnosis in breast cancer patients who receiving HT. By utilized the Cox proportion-hazards model analysis, the disease-free survival rate was significantly higher in MDR-positive patients (MDR > 20.8%) than in MDR-negative patients (MDR < 20.8%) (p = 0.048). Age, histologic grade, histologic stage, and lymph node metastasis showed a significant association with recurrence-free survival in all patients.ConclusionsOur results demonstrate the feasibility of using MDR to predict the preliminary outcomes of adjuvant HT in Asian breast cancer patients.
Origin of the Dzyaloshinskii-Moriya Interactions in the Intermetallic RMn2Si2 ( R= La, Ce, Yb and Y) Materials: A DFT Study
Authors: Bazine Widad , TAHIRI Najim , Elbounagui Omar , Ez-Zahraouy Hamid 
Published: March 2021

Abstract
The Dzyaloshinskii-Moriya interactions (DM) are investigated using first-principles calculations by means of the WIENNCM code, an implementation of the FP-LAPW method. The intermetallic RMn2Si2 (R = La, Ce, Yb, and Y) materials exhibit a large spin-orbit effect after the density of states; they found a strong hybridization between Mn-Si and Mn-R atoms. Also, show a large noncollinear magnetic configuration depending on the R atoms. By using ab-initio calculations, the RKKY effect is observed in the RMn2Si2 materials, which shows explicitly the existence of the giant magnetoresistance (GMR) in these materials. Explicitly, the mechanisms responsible for the magnetoelectric coupling are due to relatively the effect of the presence of the Dzyaloshinskii-Moriya term.
Dependence of Capacitive Properties of an EDLC on Exfoliation Time of Graphite Electrodes
Authors: Rajaguru Dinithi S. K. , Vidanapathirana Kamal , Perera Kumudu S. 
Published: March 2021

Abstract
The scientific focus has been directed through the production and application of ‘wonder material- graphene’ after its discovery in 2004. But the mass production cost has become a huge disadvantage towards commercializing graphene based manufactures. As alternative low cost material, exfoliated graphite (EG) has emerged to be a novel nanostructured carbon material with a potential for electrochemical energy storage device applications owed to its unique characteristics similar to graphene. In this study a series of EG samples were prepared by a surfactant mediated liquid phase exfoliation method by changing the exfoliation time. Electrochemical double layer capacitors (EDLCs) were fabricated using different EG samples as an electrode material and a gel polymer electrolyte (GPE). They were characterized by electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV) and galvanostatic charge discharge (GCD) techniques. EDLC having EG electrodes of 10 h exfoliation time showed the highest results with single electrode specific capacitance (Csc) of 4.12 F g− 1, single electrode specific discharge capacitance (Csd) of 1.10 F g− 1 and relaxation time of 0.22 s from CV, GCD and EIS respectively.
Transcultural Adaptation and Psychometric Properties of Family Quality of Life Survey for Caregivers of People With Neurodegenerative Disease: A Study of Spanish Families Who Live in the Rural Spain-Portugal Cross-border
Authors: Badia Marta , Orgaz M. Begoña , Vicario-Molina Isabel , González-Ortega Eva , Gómez-Vela María , Aza Alba , Martín-Delgado M. Antonia 
Published: March 2021

Abstract
Background: Neurodegenerative diseases (NDs) are one of the main causes of disability and dependence that have a great impact both on the quality of life of people with disabilities and their families. A majority of people with NDs receive career and support from the family, but there is no tool in Spain with which to measure whole-family QOL. The aim of this study was the translation, cultural adaptation, and validation of the FQOLS–Dementia into Spanish to assess FQOL among family members of individuals with NDs who live in the Spain-Portugal cross-border area.Method: The Spanish version was translated and adapted following the international guidelines for cross-cultural adaptation tests. A sample of 300 family caregivers was interviewed, applying an adapted version of the Family Quality Survey (FQOLS–Dementia). Confirmatory factor analysis was performed to validate the factor structure, and convergent validity was examined with Pearson’s correlation coefficients of the global FQOL with the domains. Internal consistency reliability was determined using Cronbach’s alpha.Results: The domain structure of the FQOLS–ND showed a good fit. In the convergent validity, it was found that the total score and the subscale domain scores were associated with the global FQOL score, except for the Values domain. Internal consistency of nine domain subscales was strong (α = .80 to .91), and excellent for the total FQOL (α = .95) and the global FQOL (α = .87).Conclusion: The FQOLS–ND presented good validity and reliability in caregiver families with individuals with ND, so its application shows its usefulness in detecting areas of improvement and intervention strategies for FQOL in the Spain-Portugal cross-border area.