bluuebunny/crossref_metadata_2025 huggingface dataset:
The irreplaceable role of medical massive open online courses in China during the COVID-19 pandemic
Authors: Zhu Hui , Xu Jin , Wang Penghao , Bian Jia , Zhao Zhijia , Liu Hongyi , Ji Lindan
Published: May 2023

Background

Massive open online courses (MOOCs) have become innovative open-learning approach in medical education. This study aimed to evaluate the dynamic changes in the construction and application of medical MOOCs before and after the coronavirus disease 2019 (COVID-19) pandemic in China.

Methods

The dynamic changes of usages about medical MOOCs before and after 2020 were mainly searched on the Smart Education of China Higher Education platform, and the detailed learning profiles and outcome indicators were further analyzed using 40 national first-class medical MOOCs from ‘zhihuishu’ platform.

Results

A total of 2,405 medical MOOCs were exported from the Smart Education of China Higher Education platform, of which 1,313 (54.6%) were launched since 2020. The total and average numbers of participants of 141 national first-class medical MOOCs peaked during the initial spread of COVID-19 in 2020. We further analyzed the dynamic usage of MOOCs from 2018 to 2022 based on 40 national first-class medical MOOCs launched on the ‘Zhihuishu’ platform. The findings revealed that the number of registered learners (3,240 versus 2,654), questions and answers (27,005 versus 5,116) and students taking the final examination (2,782 versus 1,995) per semester were significantly higher since 2020 compared to these before 2020. Especially, the number of registered learners, registered schools, questions and answers, and students participating in online discussion, taking the unit quiz, taking final examinations and passing final examinations all peaked in the 2020 spring–summer semester. Pearson's correlation analysis found that the number of questions and answers and the number of learners who participated in online discussion were both positively correlated with the number of students who passed the final examination, and the correlation was especially strong since 2020. Moreover, the number of publications on medical MOOC research has soared since 2020 and has maintained a continuous upward trend.

Conclusions

High-quality medical MOOCs have been launched rapidly since the COVID-19 pandemic in China. The number of participants and online interactions of medical MOOCs peaked during the initial spread of COVID-19 in 2020. MOOCs are reliable and valid digital sources that facilitate medical higher education and play irreplaceable roles in emergency management.
Acute kidney injury in the context of staged revision arthroplasty and the use of antibiotic-laden cement spacers: a systematic review
Authors: Chaudhry Yash P. , LaGreca Mark , Hayes Hunter , Papadelis Efstratios , Rao Sandesh S. , Amin Raj
Published: May 2023

Background

The most common cause of revision arthroplasty is prosthetic joint infection (PJI). Chronic PJI is commonly treated with two-stage exchange arthroplasty involving the placement of antibiotic-laden cement spacers (ACS) in the first stage, often containing nephrotoxic antibiotics. These patients often have significant comorbidity burdens and have higher rates of acute kidney injury (AKI). This systematic review aims to assess the current literature to identify (1) AKI incidence, (2) associated risk factors, and (3) antibiotic concentration thresholds in ACS that increase AKI risk following first-stage revision arthroplasty.

Methods

An electronic search was performed of the PubMed database of all studies involving patients undergoing ACS placement for chronic PJI. Studies assessing AKI rates and risk factors were screened by two authors independently. Data synthesis was performed when possible. Significant heterogeneity prevented meta-analysis.

Results

Eight observational studies consisting of 540 knee PJIs and 943 hip PJIs met inclusion criteria. There were 309 (21%) cases involving AKI. The most commonly reported risk factors included perfusion-related factors (lower preoperative hemoglobin, transfusion requirement, or hypovolemia), older age, increased comorbidity burden, and nonsteroidal anti-inflammatory drug consumption. Only two studies found increased risk with greater ACS antibiotic concentration (> 4 g vancomycin and > 4.8 g tobramycin per spacer in one study, > 3.6 g of vancomycin per batch or > 3.6 g of aminoglycosides per batch in the other); however, these were reported from univariate analyses not accounting for other potential risk factors.

Discussion

Patients undergoing ACS placement for chronic PJI are at an increased risk for AKI. Understanding the risk factors may lead to better multidisciplinary care and safer outcomes for chronic PJI patients.

Level of evidence III.
Correlation between the triglyceride-glucose index and the onset of atrial fibrillation in patients with non-alcoholic fatty liver disease
Authors: Zhang Yao , Wang Leigang , Qi Jiaxin , Yu Bing , Zhao Jianqi , Pang Lin , Zhang Wenjing , Bin Liang
Published: May 2023

Background

Non-alcoholic fatty liver disease (NAFLD) is associated with atrial fibrillation (AF). Insulin resistance (IR) is the main cause of the high prevalence of AF in NAFLD patients. The triglyceride-glucose index (TyG) is a novel IR-related indicator implicated in the incidence and severity of NAFLD. However, the role of TyG in determining the risk for AF in patients with NAFLD remains unclear.

Methods

A retrospective study was conducted on 912 patients diagnosed with NAFLD via ultrasonography. These patients were divided into two groups: (1) NAFLD+ AF and (2) NAFLD+ non-AF. Least Absolute Shrinkage and Selection Operator (LASSO) regression was used to assess the correlation between the TyG index and the high risk for AF. A receiver operating characteristic (ROC) curve was constructed to evaluate the predictive value for the TyG index for AF. Restricted cubic splines (RCS) were used to test the linear correlation between TyG and the risk for AF.

Results

A total of 204 patients with AF and 708 patients without AF were included in this study. The LASSO logistic regression analysis showed that TyG was an independent risk factor for AF (odds ratio [OR] = 4.84, 95% confidence interval [CI] 2.98–7.88, P < 0.001). The RCS showed that the risk for AF increased linearly with TyG over the entire TyG range; this risk was also evident when the patients were analyzed based on sex (P for nonlinear > 0.05). In addition, the correlation between TyG and AF was a consistent finding in subgroup analysis. Furthermore, ROC curve analysis showed that TyG levels combined with traditional risk factors improved the predictive value for atrial fibrillation.

Conclusion

The TyG index is useful in assessing the risk for atrial fibrillation in patients with NAFLD. Patients with NAFLD and increased TyG indices have higher risks for atrial fibrillation. Therefore, TyG indices should be assessed when managing patients with NAFLD.
Glycemic dispersion: a new index for screening high glycemic variability
Authors: Shi Rui , Feng Lei , Liu Yan-Mei , Xu Wen-Bo , Luo Bei-Bei , Tang Ling-Tong , Bi Qian-Ye , Cao Hui-Ying
Published: May 2023

Objective

For patients with diabetes, high-frequency and -amplitude glycemic variability may be more harmful than continuous hyperglycemia; however, there is still a lack of screening indicators that can quickly and easily assess the level of glycemic variability. The aim of this study was to investigate whether the glycemic dispersion index is effective for screening high glycemic variability.

Methods

A total of 170 diabetes patients hospitalized in the Sixth Affiliated Hospital of Kunming Medical University were included in this study. After admission, the fasting plasma glucose, 2-hour postprandial plasma glucose, and glycosylated hemoglobin A1c were measured. The peripheral capillary blood glucose was measured seven times in 24 h, before and after each of three meals and before bedtime. The standard deviation of the seven peripheral blood glucose values was calculated, and a standard deviation of > 2.0 was used as the threshold of high glycemic variability. The glycemic dispersion index was calculated and its diagnostic efficacy for high glycemic variability was determined by the Mann–Whitney U test, receiver operating characteristic (ROC) curve and, Pearson correlation analysis.

Results

The glycemic dispersion index of patients with high glycemic variability was significantly higher than that of those with low glycemic variability (p < 0.01). The best cutoff value of the glycemic dispersion index for screening high glycemic variability was 4.21. The area under the curve (AUC) was 0.901 (95% CI: 0.856–0.945) and had a sensitivity of 0.781 and specificity of 0.905. It was correlated with the standard deviation of blood glucose values (r = 0.813, p < 0.01).

Conclusions

The glycemic dispersion index had good sensitivity and specificity for screening high glycemic variability. It was significantly associated with the standard deviation of blood glucose concentration and is simple and easy to calculate. It was an effective screening indicator of high glycemic variability.
Artificial neural network analysis of the day of the week anomaly in cryptocurrencies
Authors: Tosunoğlu Nuray , Abacı Hilal , Ateş Gizem , Saygılı Akkaya Neslihan
Published: May 2023

Anomalies, which are incompatible with the efficient market hypothesis and mean a deviation from normality, have attracted the attention of both financial investors and researchers. A salient research topic is the existence of anomalies in cryptocurrencies, which have a different financial structure from that of traditional financial markets. This study expands the literature by focusing on artificial neural networks to compare different currencies of the cryptocurrency market, which is hard to predict. It aims to investigate the existence of the day-of-the-week anomaly in cryptocurrencies with feedforward artificial neural networks as an alternative to traditional methods. An artificial neural network is an effective approach that can model the nonlinear and complex behavior of cryptocurrencies. On October 6, 2021, Bitcoin (BTC), Ethereum (ETH), and Cardano (ADA), which are the top three cryptocurrencies in terms of market value, were selected for this study. The data for the analysis, consisting of the daily closing prices for BTC, ETH, and ADA, were obtained from the Coinmarket.com website from January 1, 2018 to May 31, 2022. The effectiveness of the established models was tested with mean squared error, root mean squared error, mean absolute error, and Theil’s U1, and $${R}_{OOS}^{2}$$

R

OOS

2

was used for out-of-sample. The Diebold–Mariano test was used to statistically reveal the difference between the out-of-sample prediction accuracies of the models. When the models created with feedforward artificial neural networks are examined, the existence of the day-of-the-week anomaly is established for BTC, but no day-of-the-week anomaly for ETH and ADA was found.
A comparative study between ultrasound-guided interscalene and ultrasound-guided suprascapular nerve blocks in postoperative pain and hand motor power affection in shoulder scope surgeries
Authors: Hashem Mohamed Medhat Mohamed , Ibrahim Sherif Farouk , Mansour Waleed Ahmed , Abdelaziz Noha Mohamed , Fahmy Niven Gerges
Published: May 2023

Background

Interscalene approach for brachial plexus block is recognized as the gold standard technique for postoperative pain control after shoulder scope surgeries. However, it is associated with major adverse effects and patient discomfort due to paralysis of the hand muscles. The suprascapular nerve block is considered to be a safe and effective alternative to interscalene nerve block for shoulder surgery without affecting the motor function of the hand muscles and other serious complications of interscalene nerve block, especially in ambulatory surgery.

The aim of this study is to compare interscalene and suprascapular nerve block in terms of postoperative pain, opioid consumption, and hand grip strength in shoulderscopic surgeries.

This prospective, randomized trial was done in Ain Shams University Hospitals. A sample of 50 patients was divided into two groups; 25 patients in each group, namely Group ISB (interscalene approach of brachial plexus block) and Group SSNB (suprascapular nerve block). Visual analogue scale (VAS) was used to assess shoulder pain at rest and upon flexion in the first 24 h. The degree of hand motor power affection, the total amount of opioids used as rescue analgesia, and the incidence of complications were also recorded.

Results

The findings revealed no statistically significant difference between groups (P-value > 0.05) in pain control all over the 24 h by VAS score at rest and at arm flexion. SSNB received a larger total narcotic dose (60 ± 26.02) mg of pethidine than ISB (52 ± 22.73). However, there was no statistical difference between them throughout the 24 h regarding total narcotic consumption and 1st time for pethidine administration. The ISB group showed a statistically significant reduction in the hand power grip strength postoperatively (83.68 ± 4.75%).

Conclusions

The results of the present study favor SSNB as the first choice of pain control after shoulderscopic surgeries for a patient scheduled for early home discharge because of the complete recovery of the hand muscles’ motor power.

Trial registration

This study was registered on PACTR (www.pactr.org) database; identification number for the registry is PACTR202201840526231.
Anesthesia for penetrating injury of the oropharynx in a child: a case report
Authors: Bhandari Pallav , Kapoor Ruchi , Chaudhary Sujata , Lakshmi R
Published: May 2023

Background

Penetrating injury of the oropharynx occurs frequently in children, however, anesthetic management is seldom described in such cases.

Case presentation

A 2-year old child came to the emergency room with a toothbrush impacted in the gingivobuccal sulcus making airway management difficult. We used a simple yet unique approach to secure the airway safely given the lack of pediatric size fibreoptic and videolaryngoscopes in our emergency operation theatre. The patient was kept in Pediatric ICU and watched for any complications and discharged on the 4th postoperative day.

Conclusions

Thus, ingenious non-invasive techniques to secure the airway can prevent the patient from undergoing surgical tracheostomy.
Early clinical and radiological outcomes of the new porous titanium shell in combination with locking screw in revision total hip arthroplasty
Authors: Shaarani Shahril R. , Jaibaji Monketh , Yaghmour Khaled M. , Vles Georges , Haddad Fares S. , Konan Sujith
Published: May 2023

Introduction

Extensive acetabular bone loss and poor bone quality are two key challenges often encountered in revision total hip arthroplasty. A new 3D-printed porous acetabular shell has been made available with the option to insert multiple variable-angle locking screws. We sought to evaluate the early clinical and radiological outcomes of this construct.

Methods

A retrospective review of patients operated by two surgeons was performed in a single institution. Fifty-nine revision hip arthroplasties were performed in 55 patients (34 female; mean age 68.8 ± 12.3 years) for Paprosky defects I (n = 21), IIA/B (n = 22), IIC (n = 9), III (n = 7) between February 2018 and January 2022 using the novel porous titanium acetabular shell and multiple variable angle locking screws. Postoperative clinical and radiographic outcomes were locally maintained. Patient-reported outcome measures collected included the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), the Oxford Hip Score, and the 12-item Short Form Survey.

Results

After a mean follow-up of 25.7 ± 13.9 months, two cases of shell migration were noted. One patient had a failed constrained mechanism and received revision to a cemented dual mobility liner. No other acetabular shells showed any evidence of radiographic loosening at the final follow-up. Preoperatively, 21 defects were classified as Paprosky grade I, 19 grade IIA, 3 grade IIB, 9 IIC, 4 grade IIIA, and 3 IIIB. The mean postoperative WOMAC function score was 84 (SD 17), WOMAC (stiffness) 83 (SD 15), WOMAC (pain) 85 (SD 15), and WOMAC (global) 85 (SD 17). The mean postoperative OHS was 83 (SD 15), and mean SF-12 physical score was 44 (SD 11).

Conclusion

The additional augmentation of porous metal acetabular shells with multiple variable-angle locking screws provides reliable initial fixation with good clinical and radiological outcomes in the short term. Further studies are needed to establish the medium- and long-term outcomes.

Level of evidence

IV.
Postprediction Inference for Clinical Characteristics Extracted With Machine Learning on Electronic Health Records
Authors: Sondhi Arjun , Rich Alexander S. , Wang Siruo , Leek Jeffery T.
Published: May 2023

PURPOSE

Real-world data (RWD) derived from electronic health records (EHRs) are often used to understand population-level relationships between patient characteristics and cancer outcomes. Machine learning (ML) methods enable researchers to extract characteristics from unstructured clinical notes, and represent a more cost-effective and scalable approach than manual expert abstraction. These extracted data are then used in epidemiologic or statistical models as if they were abstracted observations. Analytical results derived from extracted data in this way may differ from those given by abstracted data, and the magnitude of this difference is not directly informed by standard ML performance metrics.

METHODS

In this paper, we define the task of postprediction inference, which is to recover similar estimation and inference from an ML-extracted variable that would be obtained from abstracting the variable. We consider fitting a Cox proportional hazards model that uses a binary ML-extracted variable as a covariate and evaluate four approaches for postprediction inference in this setting. The first two approaches only require the ML-predicted probability, while the latter two additionally require a labeled (human abstracted) validation data set.

RESULTS

Our results for both simulated data and EHR-derived RWD from a national cohort demonstrate that we can improve inference from ML-extracted variables by leveraging a limited amount of labeled data.

CONCLUSION

We describe and evaluate methods for fitting statistical models using ML-extracted variables subject to model error. We show that estimation and inference is generally valid when using extracted data from high-performing ML models. More complex methods that incorporate auxiliary labeled data provide further improvements.
Expanding the Benefit: Dabrafenib/Trametinib as Tissue-Agnostic Therapy for BRAF V600E–Positive Adult and Pediatric Solid Tumors
Authors: Gouda Mohamed A. , Subbiah Vivek
Published: May 2023

The recent US Food and Drug Administration (FDA) approval of the dabrafenib/trametinib combination as a tissue-agnostic treatment for solid tumors with BRAF V600E mutation is the result of more than 20 years of extensive research into BRAF mutations in human cancer, the underlying biological mechanisms that drive BRAF-mediated tumor growth, and the clinical testing and refinement of selective RAF and MEK kinase inhibitors. Such approval marks a significant achievement in the field of oncology and represents a major step forward in our ability to treat cancer. Early evidence supported the use of dabrafenib/trametinib combination in melanoma, non–small-cell lung cancer, and anaplastic thyroid cancer. Furthermore, data from basket trials have demonstrated consistently good response rates in various tumors, including biliary tract cancer, low-grade glioma, high-grade glioma, hairy cell leukemia, and multiple other malignancies, which has been the basis for FDA approval of a tissue-agnostic indication in adult and pediatric patients with BRAF V600E–positive solid tumors. From a clinical standpoint, our review delves into the efficacy of the dabrafenib/trametinib combination for BRAF V600E–positive tumors: examining the underlying rationale for its use, evaluating the latest evidence on its potential benefits, and discussing the possible associated adverse effects and strategies to minimize their impact. Additionally, we explore potential resistance mechanisms and future landscape of BRAF-targeted therapies.
A Labor of Love
Authors: Kowaloff Rebecca
Published: May 2023

It is natural to want to avoid the sadness and powerlessness that come with losing, especially a young patient to a ravaging cancer. But there is gratification for the clinician and a deep sense of connection and support on the part of the patient and their family when we instead lean into and share those feelings, bringing our human self to the relationship when it feels that our medical self can offer so little.
Race and Ethnicity, Racism, and Population Health in the United States: The Straightforward, the Complex, Innovations, and the Future
Authors: Hummer Robert A.
Published: May 2023

For far too long, U.S. racialized groups have experienced human suffering and loss of life far too often and early. Thus, it is critical that the population sciences community does its part to improve the science, education, and policy in this area of study and help to eliminate ethnoracial disparities in population health. My 2022 PAA Presidential Address focuses on race and ethnicity, racism, and U.S. population health in the United States and is organized into five sections. First, I provide a descriptive overview of ethnoracial disparities in U.S. population health. Second, I emphasize the often overlooked scientific value of such descriptive work and demonstrate how such seemingly straightforward description is complicated by issues of population heterogeneity, time and space, and the complexity of human health. Third, I make the case that the population sciences have generally been far too slow in incorporating the role of racism into explanations for ethnoracial health disparities and lay out a conceptual framework for doing so. Fourth, I discuss how my research team is designing, collecting, and disseminating data for the scientific community that will have potential to, among many other purposes, create a better understanding of ethnoracial health disparities and the role of racism in producing such disparities. Finally, I close by suggesting some policy- and education-related efforts that are needed to address racism and population health within U.S. institutions.
Mesostructured Silica Nanoparticles with Organic Corrosion Inhibitors to Enhance the Longevity of Anticorrosion Effect
Authors: Kim Minjun , Bhanja Piyali , Amiralian Nasim , Urata Chihiro , Hozumi Atsushi , Hossain Md Shahriar A , Alshehri Saad M , Bando Yoshio , Ahamad Tansir , Yamauchi Yusuke
Published: May 2023

In this study, a specific organosilane molecule (octadecyldimethyl(3-trimethoxysilylpropyl)ammonium) is used to form soft-templates that store organic corrosion inhibitors (tolytriazole), and chemically anchor to silica surface during a sol-gel process. As the anchored soft-templates in the resulting mesostructured silica are not removed, it successfully achieves an environmental-friendly synthetic method and a prolonged storage of tolyriazole. Coating of a copper substrate with the mesostructured silica embedding tolytriazole, therefore, endows a prolonged anticorrosion effect.
Με τι συνδιαλέγονται οι ανθρωπιστικές επιστήμες και τι προβάλλουν σε μεταβατικές περιόδους
Authors: Σαντοριναίος Μάνθος
Published: May 2023

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Ψάχνοντας στο αρχείο
Authors: Πεντάζου Ιουλία
Published: May 2023

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Εισαγωγή
Authors: Πετρίδης Πέτρος
Published: May 2023

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Ηλεκτρονικά υποστηριζόμενη ανάλυση κειμένου
Authors: Δημητρούλια Τιτίκα
Published: May 2023

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Από το DARIAH-GR/ΔΥΑΣ στο PARTHENOS-EU
Authors: Καρασίμος Αθανάσιος , Γουλή Ελένη , Καλαφατά Πατρίτσια , Μεργούπη-Σαβαΐδου Ειρήνη , Παπαδάκης Νίκος , Τζεδόπουλος Γεώργιος , Φαλιέρου Αναστασία , Χρυσοβιτσάνος Γεράσιμος , Βερναρδάκη Ελένη , Σπηλιωτοπούλου Μαρία , Κατσιαδάκη Ελένη
Published: May 2023

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Η ιστορία στον αστερισμό του ψηφιακού φετιχισμού
Authors: Στουραΐτης Ηλίας
Published: May 2023

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Moral judgement among university students in Ica: A view from the perspective of Lawrence Kohlberg
Authors: Pozo Enciso Rosmery Sabina , Arbieto Mamani Oscar , Mendoza Vargas Miguel Gerardo
Published: May 2023

Background: The aim of this study was to identify moral judgement at the preconventional level, the conventional level, and the postconventional level in university students in the tenth semester in Ica, in 2022.

Method: The research methodology was descriptive-observational, quantitative and cross-sectional. The population consisted of university students in the tenth semester and the sample consisted of 157 university students. A survey was used as a data collection tool and a questionnaire was used to measure the stages of moral judgement according to Lawrence Kholberg.  

Results: It was found that 12.75% of the study sample was in the instructional relativism stage, 23.10% were in interpersonal agreement, 35.76% were in social order and authority, 11.95% were in social contract and finally 3.80% were in universal ethical principles.

Conclusion: It was concluded and identified that the stages of moral judgement among the study sample indicate that interpersonal agreement, social order and authority are the most developed among university students.
Tale of Two Cities: narrative review of oxygen
Authors: Gullapalli Pranathi , Fossati Nicoletta , Stamenkovic Dusica , Haque Muhammad , Cattano Davide
Published: May 2023

The human brain contributes 2% of the body weight yet receives 15% of cardiac output and demands a constant supply of oxygen (O2) and nutrients to meet its metabolic needs. Cerebral autoregulation is responsible for maintaining a constant cerebral blood flow that provides the supply of oxygen and maintains the energy storage capacity. We selected oxygen administration-related studies published between 1975–2021 that included meta-analysis, original research, commentaries, editorial, and review articles. In the present narrative review, several important aspects of the oxygen effects on brain tissues and cerebral autoregulation are discussed, as well the role of exogenous O2 administration in patients with chronic ischemic cerebrovascular disease: We aimed to revisit the utility of O2 administration in pathophysiological situations whether or not being advantageous. Indeed, a compelling clinical and experimental body of evidence questions the utility of routine oxygen administration in acute and post-recovery brain ischemia, as evident by studies in neurophysiology imaging. While O2 is still part of common clinical practice, it remains unclear whether its routine use is safe.
Case Report: Endovascular approach with kissing stent technique in aortoiliac occlusive disease (Leriche syndrome) patient
Authors: Dakota Iwan , Taofan Taofan , Indriani Suci , Afandy Jonathan Edbert , Al Jaidi Yislam , Adiarto Suko , Sukmawan Renan
Published: May 2023

Background: Aortoiliac occlusive disease (AIOD) or Leriche syndrome, is a peripheral artery disease, specifically affecting the infrarenal aorta and iliac arteries. Presentation of AIOD patients ranged from asymptomatic to having limb-threatening emergencies. Advances and innovations in endovascular devices have replaced surgical approach for AIOD treatment. Here we reported a 52-year-old man presenting with AIOD managed by endovascular approach using kissing stent technique.

Case presentation: A 52-year-old man, with history of chronic coronary artery disease, diabetes mellitus type 2, long-standing hypertension, and who was a heavy smoker, was admitted to our hospital with symptoms of long time with bilateral claudication and became leg rest pain. He had history of aorto-infrarenal occlusion known from previous percutaneous coronary intervention from right and left femoral artery access. Aortoiliac occlusive disease (TASC II Type D Class) diagnosis was made by lower extremity duplex ultrasound and CT angiography. The patient underwent urgent percutaneous transluminal angioplasty with kissing stent technique. The patient was discharged 4 days after the procedure without any significant complaints, received optimal medical treatment, and was educated about smoking cessation.

Conclusion: Treatment of AIOD should include both modification of risk factors and efforts to increase perfusion to the lower extremities. An endovascular approach is an excellent alternative and may replace surgical approach in complex aortoiliac obstructive disease. In this case report, an endovascular approach with kissing stent technique showed good results for the patient.
Octacalcium phosphate, a promising bone substitute material: a narrative review
Authors: Kim Jooseong , Kim Sukyoung , Song Inhwan
Published: May 2023

Biomaterials have been used to supplement and restore function and structure by replacing or restoring parts of damaged tissues and organs. In ancient times, the medical use of biomaterials was limited owing to infection during surgery and poor surgical techniques. However, in modern times, the medical applications of biomaterials are diversifying owing to great developments in material science and medical technology. In this paper, we introduce biomaterials, focusing on calcium phosphate ceramics, including octacalcium phosphate, which has recently attracted attention as a bone graft material.
Inteligencia emocional en Educación Secundaria: relación con los factores sociales y académicos.
Authors: Pérez Mármol Mariana , Castro Sánchez Manuel , Chacón Cuberos Ramón , Gamarra Vengoechea María Alejandra
Published: May 2023

El objetivo de la presente investigación fue analizar la relación entre la inteligencia emocional (IE), factores socioacadémicos, y la incidencia de la práctica de actividad física, en una muestra de 1650 estudiantes de secundaria pertenecientes a la provincia de Granada. El diseño realizado fue descriptivo-exploratorio, de corte transversal y ex posfacto con una medición en un único grupo. Para la medición de las variables, se utilizaron dos cuestionarios, uno de elaboración propia (Ad hoc) donde se pretende conocer cuestiones de corte sociodemográfico y otro, para evaluar la inteligencia emocional (TMMS-24). Los resultados reflejaron que tan sólo existe diferencias significativas entre la IE y el sexo, siendo los chicos quienes poseen mayor IE en comparación con las chicas, presentando valores más adecuados en las dimensiones percepción y regulación emocional. Se pone de manifiesto la necesidad de seguir investigando la IE con el fin de esclarecer las relaciones con los factores académicos, e indicadores de salud, para poder comprender mejor aquellos elementos que inciden de manera directa en el buen desarrollo de los adolescentes. Se cree relevante dotar a los estudiantes de competencias que integren herramientas psicológicas (refuerzo de la autoestima, autoconcepto e IE), sociales (habilidades sociales), salud global (hábitos nutricionales, actividad física, salud mental) y educativas (técnicas de estudio, orientación), etc.
Metaevaluación de un sistema de evaluación docente desde la perspectiva estudiantil.
Authors: Hernández-Villafaña Alma Delia , Luna Serrano Edna
Published: May 2023

El objetivo de este estudio fue realizar una metaevaluación del Sistema de Evaluación Docente (SED) de la Universidad Autónoma de Baja California para identificar fortalezas y aspectos a mejorar en: el Cuestionario de Evaluación de la Competencia Docente (CECD), el sistema gestor del SED, la administración del CECD y el uso de los resultados. Corresponde a un estudio de caso que adaptó elementos del modelo de evaluación responsiva, la muestra no probabilística fue de 10,160 estudiantes que contestaron un cuestionario en línea, los datos se procesaron con técnicas de análisis univariado y análisis cualitativo del contenido. Se encontró una opinión dividida respecto al uso de los resultados, la estructura y contenido del CECD, y el procedimiento de aplicación; así como observaciones críticas hacia el SED. Pero la valoración global ponderó la utilidad del SED. Se concluye sobre la necesidad de mejorar la usabilidad de los resultados de la evaluación docente.
Materiales didácticos digitales en Educación Infantil desde la perspectiva del profesorado.
Authors: Mellado-Moreno Pedro C. , Sánchez-Antolín Pablo , Ramos-Pardo Francisco J. , Blanco-García Montserrat
Published: May 2023

Este trabajo presenta un estudio sobre el uso de materiales didácticos digitales desde la perspectiva del profesorado, analizando las ventajas e inconvenientes de este tipo de recursos, el grado de conformidad del profesorado con esas ventajas e inconvenientes, los potenciales cambios metodológicos que puede promover el uso de estos recursos, así como el nivel de conectividad y calidad de los dispositivos que se disponen en los centros en los que imparten docencia. Para ello se analizan las respuestas de una muestra de 470 docentes a un cuestionario de 54 ítems desarrollado ad hoc, respondido por vía telemática por docentes de educación infantil en la región de Castilla-La Mancha. Los resultados muestran que, si bien el profesorado se muestra de acuerdo con algunas de las ventajas atribuidas al uso de los materiales digitales en el ámbito educativo de Educación Infantil, y a su vez se distancia de algunos de los inconvenientes tradicionalmente relacionados con los mismos, la mayoría de los docentes participantes en el estudio no aprecian cambios metodológicos significativos e informan a su vez de la persistencia de una brecha digital entre centros ubicados en áreas urbanas o semiurbanas y centros rurales. Finalmente, se realizan algunas sugerencias basadas en los resultados obtenidos.
Cómo el profesorado de Lengua Española y Ciencias Naturales integra las TIC: Un estudio cuantitativo.
Authors: García-Tati Arelis , Sánchez-Moreno Marita
Published: May 2023

Las tecnologías de la información y comunicación favorecen el trabajo colaborativo entre compañeros y la comunicación entre pares, así como el acceso a la información, siempre que el maestro haya adquirido las competencias tecnológicas durante su formación profesional. El objetivo del artículo es analizar la integración de las tecnologías de la información y comunicación (TIC), por parte de los profesores de secundaria, en sus prácticas educativas en las áreas de Lengua Española y Ciencias Naturales. El método empleado fue un enfoque cuantitativo con un diseño no experimentaltranseccional y un corte descriptivo. El muestreo fue no probabilístico por cuotas, conformado por 71 profesores. Se utilizó un cuestionario diseñado ad hoc con 90 ítems, en escala de Likert. Los datos se tabularon en el Software SPSS V23. Los resultados demostraron, que los docentes que tienen formación en el uso de las herramientas digitales y aprecian los beneficios educativos que pueden lograr en sus alumnos, las emplean con más frecuencia. Además, los profesores que reciben apoyo de las autoridades del centro, se motivan más para integrarlas a sus prácticas de aulas. Se concluyó que la formación y la actitud que tiene el profesorado ante el uso de las TIC, es lo que les permitirá incorporarlas de forma gradual en los entornos de aprendizaje.
Evaluación del Máster en Psicopedagogía en España: impacto del proceso de acreditación.
Authors: Fernández-Cruz Francisco José , Rodríguez-Mantilla Jesus Miguel , Gómez del Pulgar Cinque Sandra
Published: May 2023

Para afrontar los cambios exigidos por el EEES en las titulaciones universitarias se ha visto necesario el trabajo desarrollado por las Agencias de Garantía de Calidad (AGC) para alcanzar una mayor transparencia, diversidad, competitividad y calidad de los planes de estudio ofertados. Sin embargo, no existen suficientes estudios que traten de detectar el impacto que la evaluación de las titulaciones universitarias tiene en los procesos que desarrollan. El presente trabajo pretende analizar el impacto del proceso de acreditación en las titulaciones del Máster en Psicopedagogía en España, aportando información sobre las diferencias encontradas entre las distintas agencias regionales y las instituciones universitarias y los puntos débiles que deben optimizar en los planes de mejora. Para ello, se utilizó una metodología de investigación cualitativa basada en un análisis documental que recabó y estudió los informes oficiales del proceso de acreditación en 12 universidades españolas de las 22 que ofrecen este título y que han pasado por esta evaluación. Se destaca, como resultado principal, la media que se obtiene en el conjunto de todas las acreditaciones del título del Máster en Psicopedagogía (=1,90), lo que supone un Valor C (Se alcanza parcialmente), obteniendo mejores puntuaciones aquellas universidades que más tiempo llevan verificadas. Como conclusión, se requiere de una mayor profundización en este tipo de estudios en cuanto al análisis de su repercusión en la titulación, especialmente en el proceso de aprendizaje.
Videojuegos para el desarrollo de competencias en Educación Superior.
Authors: Sierra-Daza María Caridad , Martín-del-Pozo Marta , Fernández-Sánchez María Rosa
Published: May 2023

Los videojuegos ganan cada vez más atención desde la investigación educativa y su aplicación a la práctica docente. En este sentido, los videojuegos pueden ampliar las posibilidades educativas, entre otras, en la etapa universitaria. Dicho esto, este trabajo tiene como objetivo central obtener evidencias de artículos que abordan el desarrollo de competencias específicas (instrumentales, interpersonales y sistémicas) del Proyecto Tuning con videojuegos en Educación Superior, analizándose las competencias desarrolladas, y, además, las ramas de conocimiento de las titulaciones universitarias. Para ello, se lleva a cabo una revisión sistemática de literatura de estudios publicados en los seis últimos años (desde 2016 hasta 2021) sobre el uso de videojuegos para el desarrollo de competencias en los estudiantes en Educación Superior, guiada por el protocolo PRISMA 2020. En esta revisión, se identifican 62 artículos que recogen hallazgos sobre el uso de videojuegos para el desarrollo de competencias en la Educación Superior. Los resultados obtenidos reflejan un predominio de estudios centrados en el uso de videojuegos para el desarrollo de competencias instrumentales de la dimensión del “saber”, seguido de aquellos centrados en competencias sistemáticas tales como la motivación. Sin embargo, se detecta una carencia en competencias interpersonales como la capacidad de trabajar en un equipo interdisciplinar o la capacidad para comunicarse con expertos de otras áreas, siendo ambas fundamentales en el desarrollo profesional.
Fintech and financial inclusion: analysis from a financial dignity approach
Authors: Suarez Lucia
Published: May 2023

Technological innovation has been identified by the authorities as a tool for financial inclusion. However, financial technology (FinTech) also has the potential to support a broader concept: financial dignity. This study analyzes three financial inclusion policies from three regions and its metrics to identify whether the supervisors are embedding FinTech in their current strategies and metrics. These metrics are also evaluated not only for the short-term perspective, but also from the long-term, identified as financial dignity. Finally, a proposal structure of key performance indicators is made.
Límites al poder de reforma constitucional: Límites formales y sustantivos del poder de reforma constitucional en Colombia
Authors: Sogamoso Elizalde Yeison Samuel
Published: May 2023

Este articulo tiene como tema central la identificación de los límites al poder de reforma constitucional, determinado tanto los limites formales, como sustantivos o materiales, los primeros haciendo referencia a procedimiento que debe acatar el órgano reformador para adelantar las reformas constitucionales y los segundos, hacen referencia al contenido en sí de la reforma y la competencia del órgano reformador para adelantarla, por lo que una vez identificados dichos limites se procede a la aplicación de la Teoría de Sustitución Constitucional desarrollada por la Corte Constitucional, al Acto Legislativo 01 de 2020 que elimino la prohibición de la Pena de Prisión Perpetua y estableció la prisión perpetua revisable cuando un niño, niña o adolescente sea víctima de las conductas de homicidio en modalidad dolosa, acceso carnal que implique violencia o sea puesto en incapacidad de resistir o sea incapaz de resistir, llegando a la conclusión que esta fue una reforma contraria a los principios esenciales y definitorios de la Constitución Política, razón por la cual fue declarado inexequible.
The Value of Organizational Purpose
Authors: Henisz Witold J.
Published: May 2023

Broadening the organizational purpose of a firm beyond narrow short-term profit maximization may enhance long-term shareholder value. This result obtains when firms generate unpriced externalities and face difficulties in achieving ex ante incentive alignment with stakeholders through contract or have the ex post possibility of altering stakeholders’ perceptions through virtue signaling (i.e., cheap talk or greenwash). As each of these conditions is ubiquitous in practice, discussion of organizational purpose (beyond narrow short-term profit maximization to encompass stakeholder’s harmonious pursuit of a common higher goal or meaning) should shift from why management might pursue it to how managers obtain and maintain it as well as the value creation and distribution implications of doing so. Drawing on a value-based stakeholder theory of strategic management, I argue that attentiveness to the most salient issues of a firm’s most powerful stakeholders related to the attainment of this higher goal more closely aligns stakeholder and shareholder value in the long term, thereby building and sustaining relational contracts with stakeholders. A firm with strong relational contracts across its nexus of stakeholder relationships increases the likelihood of harmony among its stakeholders, including shareholders. An important challenge to realizing this outcome is that of measurement. As a result, research on organizational purpose should turn its attention from legal and moral foundations to empirical research on externalities, stakeholder opinions, and managers’ self-representations of their organization’s purpose. The availability of such data lowers the transaction costs associated with a nexus of relational contracts and enhances societal welfare.

History: This paper has been accepted for the Strategy Science Special Issue on Corporate Purpose.
EFEKTIFITAS SAYURAN SELADA (Lactuca sativa L.) DALAM MEREDUKSI KONSENTRASI NITRAT PADA LIMBAH HASIL BUDIDAYA IKAN PATIN (Pangasius pangasius) DENGAN SISTEM AKUAPONIK
Authors: Mulasari Surahma Asti , Santri Ichtiarini Nurullita , Oktariansyah Oktariansyah
Published: May 2023

Background: Water is a natural resource that has a very important function for human life and other living things. Aquaculture waste produces ammonia, nitrite and nitrate waste. Nitrates can have a negative impact on the environment, among others, by contaminating water sources for various purposes, one of which is drinking water and causing health problems for humans.

Method: This research used quasi-experimental (Quasi experiment) with Non-Equivalent Control group design. The study involved two groups, the control and the treatment by supplying 108 lettuce planting holes in three times. Data analysis used univariate and bivariate analysis with Wilcoxon test.

Result: The lettuce (Lactuca sativa L) had no effect in reduced nitrate concentrations in the posttreatment. The results of the Wilcoxon test showed a p-value of 0.068.

Conclusion: There was no significant difference in nitrate concentration in catfish (Pangasius pangasius) culture water at the input and output of the lettuce (Lactuca sativa L) installation.
PENGETAHUAN DAN SIKAP PETUGAS TERHADAP PEMISAHAN DAN PENYIMPANAN LIMBAH MEDIS DI 6 PUSKESMAS WILAYAH MAMPANG PRAPATAN
Authors: Pou Rudy , Adrya Jessica , Masyhudi Alysa Masytha
Published: May 2023

Puskesmas sebagai salah satu tempat penyelenggaraan upaya pelayanan kesehatan menghasilkan limbah medis yang berpotensi menimbulkan risiko penularan penyakit dan gangguan kesehatan serta pencemaran lingkungan. Masih rendahnya pengetahuan dan kesadaran di antara petugas kesehatan mengenai pengelolaan limbah medis khusus tahapan pemilahan dan penyimpanan. Penelitian observasional analitik dengan pendekatan cross-sectional yang dilakukan pada bulan September - Oktober 2021. Pengetahuan petugas puskesmas wilayah kerja Mampang Prapatan didominasi pengetahuan kurang baik terkait pengelolaan limbah medis sebesar 77 (72,6%), sedangkan yang berpengetahuan baik sebesar 29 (27,4%). Terdapat hubungan yang bermakna antara usia dengan pengetahuan responden mengenai pengelolaan limbah medis (p < 0,05), sedangkan tidak terdapat hubungan yang bermakna antara tingkat pendidikan (p = 0,517 > 0,05) dan lama kerja (p = 0,094 > 0,05) dengan pengetahuan responden.
HUBUNGAN PENGETAHUAN TENTANG JAMBAN DENGAN PERILAKU PENGGUNAAN JAMBAN DI DESA TANJUNG GADAI KABUPATEN KEPULAUAN MERANTI
Authors: Susanti Lasiah , Saptariza Martha , Dewanti Sonya
Published: May 2023

Latrine utilisation is a form of sanitation to keep healthy environment. The problem is latrine utilisation affected by knowledge, behavior, education, attitude, and economy. According to Join Monitoring Program (JMP) WHO/UNICEF 2015, 51 milion indonesian people still defecate in random place. 12,9% Indonesian people did’t have appropriate latrine. Data from public health centre of Selat Panjang’s on 2018, there are 3 villages with low sanitation in Selat Panjang, Kepau Baru is the first villages with very low point, Teluk Buntal is the second and  Tanjung Gadai is the third village. Where is health appropriate latrine is very rare, in contrast with 7 other villages in Selat Panjang. Located in Meranti archipelago, Selat Panjang consist of 10 remote villages that difficult to access and had their very own culture. Research conducting in Tanjung Gadai village because its more accessible than the other two villages, and the language is easy to understand. Research aim to know the relationship between knowledge of healthy latrines and latrines utilisation behavior in Tanjung Gadai village Meranti Island. This study used observational analytic study with a Cross Sectional approach. The research was conducted in the village of Tanjung Gadai, Meranti Islands Regency. The sampling technique used is Stratified Propotionate Random Sampling and tested statistically using the Correlation Test Spearman. The research result showed that there is significant relationship between the respondents’ knowledge and their behaviour in using toilet  at Tanjung Gadai village, regency of  Meranti Archipelago 0,017. ρ <0.05, Hence, there is significant relationship between the knowledge about t healthy latrines and latrines utilisation behavior in Tanjung Gadai village, Meranti Archipelago Regency.
Postgraduate students’ difficulties and strategies on speaking
Authors: Adelita Devika , Daulay Sholihatul Hamidah
Published: May 2023

In both first and second language acquisition environments, speaking is one of the four macro skills that must be cultivated as a way of effective communication. This study was aimed to explore the postgraduate students' perception of speaking skills and to examine the most dominant problems faced by the postgraduate students in speaking. As a result of this issue, a qualitative research design was developed as an action study in a regular course. Therefore, the subjects of this research were 10 postgraduate students in the first semester at the State Islamic University of North Sumatera. The data were collected by a questionnaire which applied in Google form. The researcher shared the Google form link with the students via WhatsApp message. In analyzing data, the researcher analyzed the data based on each question and answer of the respondent. The researcher analyzed the data one by one to get the point of the research. After that, the whole data are discussed using the theory and continued by concluding. The result shows that it was found that the post-graduate students faced many problems in speaking in the target language, such, pronunciation, grammar, vocabulary, fluency, and speaking. There were also other problems such as lack of confidence and did not have any brave to speak in the second language.