bluuebunny/crossref_metadata_2025_split huggingface dataset:
Eksplorasi Etnomatematika pada Tudung Saji Pandan Masyarakat Melayu Lingga
Authors: Ernawati Elly , Izzati Nur 
Published: September 2023

Salah satu strategi pelestarian budaya agar tidak tergerus oleh globalisasi adalah melalui pendidikan sehingga penelitian terhadap budaya perlu dilakukan sebagai bentuk pelestarian dan memberikan sumbangsih di bidang pendidikan terutama untuk kegiatan pembelajaran. Adapun tujuan penelitian ini yaitu untuk menemukan matematika dalam budaya masyarakat Melayu Lingga, yaitu Tudung Saji Pandan Lingga. Penelitian ini fokus pada eksplorasi unsur matematika pada Tudung Saji Pandan Lingga. Pendekatan yang digunakan pada penelitian ini, yaitu etnografi. Dalam mengumpulkan data, teknik yang digunakan melalui lembar wawancara dan observasi serta peneliti sebagai instrumen utama. Analisis data mengacu pada Miles dan Huberman (1992), yaitu reduksi data, penyajian data, dan penarikan kesimpulan. Hasil dari eksplorasi menunjukkan, adanya konsep-konsep matematika yang ditemukan dalam Tudung Saji Pandan Lingga sehingga dapat digunakan dalam pembelajaran matematika. Beberapa konsep tersebut adalah bangun ruang sisi lengkung (kerucut), bangun datar (lingkaran, segi enam, segitiga sama sisi), bagian-bagian dari lingkaran (tali busur, tembereng, juring), simetri lipat, dan sudut. Hasil temuan ini dapat digunakan pendidik untuk mengajarkan matematika di sekolah dengan konteks nyata.
One strategy for preserving culture, so as not to be eroded by globalization, is through education. So that research on culture needs to be carried out as a form of preservation and making a contribution in the field of education, especially for learning activities. The purpose of this research is to find mathematics in the culture of the Malay Lingga community, namely Tudung Saji Pandan Lingga. This study focuses on exploring the elements of mathematics in Tudung Saji Pandan Lingga. The approach used in this research is ethnography. In collecting data, the techniques used were through interviews and observation sheets, as well as the researcher as the main instrument. Data analysis refers to Miles and Huberman (1992), namely data reduction, data presentation, and drawing conclusions. The results of the exploration show that there are mathematical concepts found in Tudung Saji Pandan Lingga, so they can be used in learning mathematics. Some of these concepts are curved side shapes (cones), flat shapes (circles, hexagons, equilateral triangles), parts of a circle (project chords, segments, wedges), folding symmetry, and angles. The results of these findings can be used by educators to teach mathematics in schools, with real contexts.
Pengembangan Media Interaktif Berbasis Aplikasi Android untuk Mendukung Pembelajaran Hybrid pada Materi SPLDV Kelas VIII
Authors: Simbolon Rahma Gustiannur , Sallyna Sallyna 
Published: September 2023

Penelitian ini bertujuan untuk menghasilkan sebuah produk berbentuk aplikasi android yang Valid dan Praktis sehingga dapat mendukung pembelajaran secara hybrid terkhusus pada materi Sistem Persamaan Linear Dua Variabel (SPLDV). Jenis penelitian yang dilakukan adalah penelitian dan pengembangan (Research & Development). Model penelitian yang digunakan adalah Define, Design, and Development. Instrumen penelitian yang digunakan berupa lembar validasi dan lembar kepraktisan penggunaan aplikasi. Metode pengumpulan data pada penelitian ini yaitu angket. Teknik analisis data dilakukan analisis angket validitas dan praktikalitas. Hasil penelitian menunjukkan bahwa media yang dikembangkan valid dari dari segi media, materi dan bahasa serta praktis dari segi indikator efektif, interaktif, efisien, dan kreatif.
This study aims to produce a product in the form of a valid and practical android application so that it can support hybrid learning, especially in the material for the Two Variable Linear Equation System (SPLDV). The type of research conducted is research and development (R&D). The research model used is Define, Design, and Development. The research instruments used were validation sheets and practice application usage sheets. The data collection method in this study was a questionnaire. The data analysis technique was carried out by analyzing the validity and practicality of the questionnaire. The results showed that the developed media was valid in terms of media, material and language as well as practical in terms of indicators of effectiveness, interactive, efficient, and creative.
Validitas Model Sharing Reading Literacy
Authors: Zuliasmi Felia , Marni Silvia , Nisja Indriani 
Published: September 2023

Abstrak
Permasalahan yang melatarbelakangi penelitian ini adalah masih banyak Guru Bahasa Indonesia Kelas X SMA Negeri 15 Padang mengalami kesulitan dalam menganalisis tingkat validitasan model pembelajaran yang akan diujikan kepada siswa kelas X SMA Negeri 15 Padang. Di samping itu, Guru Bahasa Indonesia Kelas X SMA Negeri 15 Padang belum pernah melakukan analisis validitas model pembelajaran yang diujikan kepada siswa sehingga Guru Bahasa Indonesia Kelas X SMA Negeri 15 Padang tersebut tidak pernah mengetahui apa saja sistem pendukung dalam penerapan model pembelajaran yang akan diujikan kepada siswa-siswinya. Ini menyebabkan tujuan pembelajaran tidak dapat tercapai dengan baik dan maksimal. Penelitian ini bertujuan untuk melihat bentuk validitas Model Sharing Reading Literacy serta tingkat validitas Model Sharing Reading Literacy yang valid akan diterapkan oleh Guru kepada siswa Kelas X SMA Negeri 15 Padang. Penelitian ini merupakan penelitian pengembangan yang menggunakan desain pembelajaran menurut Dick dan Carey. Subjek pada penelitian ini yaitu Tim Validator. Berdasarkan analisis data dan pembahasaan, dapat disimpulkan bahwa hasil validasi isi tergolong valid yaitu: validiasi isi dengan nilai 60 atau kategori cukup valid sedangkan untuk hasil validasi konstruk tergolong sangat valid yaitu 100.

Abstract
The problem behind this research is that there are still many Indonesian language teachers in Class X SMA Negeri 15 Padang having difficulty in analyzing the level of validity of the learning model that will be tested on Class X students at SMA Negeri 15 Padang. Besides that, the Indonesian Class X teacher of SMA Negeri 15 Padang has never conducted an analysis of the validity of the learning model that was tested on students. So that the Class X Indonesian teacher of SMA Negeri 15 Padang never knew what the support system was in implementing the learning model that would be tested on his students. So that the learning objectives cannot be achieved properly and optimally. This study aims to see the form of validity of the Sharing Reading Literacy Model and the level of validity of the valid Sharing Reading Literacy model that will be applied by the teacher to Class X students of SMA Negeri 15 Padang. This research is a development research that uses a Dick and Carey model. However, in this research, only up to the development stage (develop). The subject of this research is the validator team. Based on data analysis and discussion, it can be concluded that the content validation results are valid, namely . Content validation 60 with quite valid category. Meanwhile, the results of construct validation are classified as very valid, namely 100.
Technical considerations and long-term results of endovascular venous stenting to control venous hypertension from meningiomas invading intracranial venous sinuses
Authors: Higgins J. Nicholas P. , Kirollos Sherif R. W. , Helmy Adel , Guilfoyle Mathew R. , Pickard John D. , Axon Patrick R. , Joannides Alexis J. , Jefferies Sarah , Santarius Thomas , Kirollos Ramez 
Published: September 2023

OBJECTIVE
Meningiomas invading the intracranial venous sinuses may cause intracranial venous hypertension, papilledema, and visual compromise. Sinus resection and graft reconstructions, however, add significant complexity to tumor surgery, with the potential for increased morbidity. In this study, the authors explored whether venous sinus stenting might provide an alternative means of controlling venous hypertension that would be sustainable over the long term.

METHODS
The authors performed a retrospective review of all 16 patients with intracranial meningiomas who underwent stenting at their institution for venous sinus compromise. At presentation, all had headache and 9 had papilledema. Thirteen patients had 1 meningioma and 3 had 2 or more. Three patients had had previous tumor resection and radiotherapy. One patient had been treated with a lumboperitoneal shunt and radiotherapy. The median length of clinical follow-up was 8 years (range 4 months–18 years).

RESULTS
Venous sinus narrowing was often not confined to the site of meningioma, and bilateral transverse sinus narrowing, reminiscent of that seen in idiopathic intracranial hypertension, was present in 7 patients with sagittal sinus meningiomas. Eleven patients had stents placed solely across sinus narrowing caused by meningioma. Five patients had additional stents placed at other sites of venous narrowing at the same time: in one of these patients, a stent was placed across a defect in the sagittal sinus caused by previous surgery, and in the 4 other patients, stents were placed across nontumor narrowings of the transverse sinuses. In 1 patient, the jugular vein was also stented. Nine patients developed symptomatic in-stent restenosis at the meningioma site. Eight had further stenting procedures with variable success in restoring the in-stent lumen. The remaining patient, with a late partial relapse, is being reinvestigated. Papilledema resolved in all patients after stenting. Six patients experienced prolonged and very substantial relief of all symptoms. Five patients had persistent headache despite restoration of the sinus lumen. Five had persistent symptoms associated with resistant in-stent stenosis. There were no significant complications from any of the diagnostic or therapeutic procedures.

CONCLUSIONS
In patients who are symptomatic with meningiomas obstructing the venous sinuses, successful stenting of the affected segment can give a good outcome, especially in terms of relieving papilledema. However, further procedures are often necessary to maintain stent patency, other areas of venous compromise frequently coexist, and some patients remain symptomatic despite apparently successful treatment of the index lesion. Long-term surveillance is a requirement.
Long-term outcomes after conservative and EDAS treatment for 111 elderly patients with moyamoya disease: longitudinal and cross-sectional study
Authors: Li Jing-Jie , Wang Xiao-Peng , Wang Qian-Nan , Bao Xiang-Yang , Guo Qing-Bao , Kong Zi-Qing , Gao Gan , Wang Min-Jie , Liu Si-Meng , Fu He-Guan , Zhang Qian , Duan Lian 
Published: September 2023

OBJECTIVE
This study aimed to explore the clinical features of moyamoya disease (MMD) and the efficacy of encephaloduroarteriosynangiosis (EDAS) in elderly patients with MMD and to identify the risk factors for long-term stroke events.

METHODS
Clinical data were retrospectively collected on elderly patients with MMD (age ≥ 60 years) who had been treated at the authors’ center from May 2007 to December 2017. Clinical features, angiographic findings, and long-term outcomes (> 5-year follow-up) were analyzed. Cox regression analysis was performed to determine the risk factors for postoperative stroke events. Long-term stroke events were analyzed using Kaplan-Meier curves.

RESULTS
The mean age at symptom onset was 62.9 ± 3.0 years among 111 elderly patients with MMD. Vascular comorbidities were present in 80 (72.1%) patients. The ratio of female to male patients was 1:1.2. Familial MMD was found in 7 (6.3%) patients. Cerebral ischemia was the most common clinical manifestation observed in 82 (73.9%) patients. Most patients (59.5%) presented with Suzuki stages 5 and 6 MMD, and 29 (26.1%) patients presented with stenosis or occlusion of the posterior circulation. Unilateral MMD was present in 17 (15.3%) patients. Among the 58 (52.3%) patients who underwent EDAS, 28 (48.3%) and 30 (51.7%) underwent bilateral and unilateral surgeries, respectively. Overall, 53 (47.7%) patients were treated conservatively using internal medicine. After a median follow-up duration of 8.2 years, stroke incidence in the EDAS and conservative treatment groups was respectively 17.2% (7 and 3 cases of cerebral infarction and hemorrhage, respectively) and 49.1% (22 and 4 cases of cerebral infarction and hemorrhage, respectively). The stroke incidence rate was higher in the conservative group than in the EDAS group, with a statistically significant difference (p = 0.001) according to results of the Kaplan-Meier analysis. The identified predictor of postoperative stroke events was initial hemorrhage in the EDAS group and advanced age, aneurysm, and initial ischemia in the conservative treatment group.

CONCLUSIONS
The postoperative long-term stroke rate among elderly patients with MMD was lower in the EDAS group than in the conservative treatment group. Long-term stroke events were associated with advanced age, aneurysm, and initial ischemia after conservative treatment and only initial hemorrhage after EDAS.
Radionuclide shuntography for cerebrospinal fluid shunt flow evaluation in adults
Authors: Nandoliya Khizar R. , Klein Jon P. , Alwakeal Amr , Linscheid Logan , Avery Ryan J. , Potts Matthew B. 
Published: September 2023

OBJECTIVE
Radionuclide shuntography (RS) performed using 99mTc-DTPA injected into the reservoir of CSF shunts enables evaluation of CSF flow for suspected shunt malfunctions. The goal of this study was to report the authors’ institutional experience with RS and evaluate its utility and associated complications.

METHODS
The authors retrospectively reviewed all RS studies performed between November 2003 and June 2022. Patients with shunted hydrocephalus who were ≥ 18 years of age were included. Patients undergoing RS for evaluation of Ommaya reservoirs were excluded. Demographics, hydrocephalus etiology, presenting symptoms, study results, subsequent management, complications, and intraoperative diagnoses were recorded. Chi-square tests were reported for categorical variables and standard 2 × 2 contingency methods were used for sensitivity/specificity analysis.

RESULTS
The authors identified 211 RS procedures performed in 142 patients. The mean age at procedure was 55.6 ± 20.9 years (mean ± SD). Normal pressure hydrocephalus was the most common hydrocephalus etiology (37.0%), followed by congenital malformations (26.1%) and idiopathic intracranial hypertension (15.6%). Successful radionuclide injection was achieved in 207 studies (98.1%). Shunt patency was confirmed in 63.8% of successful injections, whereas malfunction was demonstrated in 27.1% and abnormally slow flow was seen in 9.2%. RS studies demonstrating shunt malfunction were more likely to result in subsequent revisions than were studies showing patency (86.6% vs 2.9%; p < 0.0001). The overall sensitivity and specificity of RS for detecting shunt malfunction was 92.3% and 96.2%, respectively. The median follow-up time was 29 months, with 151 cases having ≥ 6 months of follow-up. There were no complications or infections attributable to RS in this cohort.

CONCLUSIONS
RS is a useful and safe tool in the workup of shunt malfunction.
Thoracic costotransversectomy characteristics and 90-day complications vary based on underlying diagnosis
Authors: El Naga Ashraf N. , Gendelberg David , Tavolaro Celeste , Zhou Haitao , Bellabarba Carlo , Bransford Richard J. 
Published: September 2023

OBJECTIVE
Thoracic costotransversectomies are among the most invasive spinal procedures performed and are associated with unanticipated medical and surgical complications. Few studies have specifically assessed medical and surgical complications after a thoracic corpectomy via a costotransversectomy approach (TCT) or compared complications between different diagnoses. The purpose of this study was to describe the differences in operative characteristics and rates of 90-day surgical and medical complications in patients undergoing TCTs based on underlying diagnosis.

METHODS
A retrospective chart review of 123 consecutive patients who underwent TCTs at a single academic referral center over a 10-year period was conducted. Surgical indication, corpectomy levels, intraoperative dural tears, pleural injuries, neurological injuries, 90-day mortality, 90-day reoperations, and hospital-based medical complications were evaluated.

RESULTS
One hundred twenty-three patients underwent a TCT, including 35 for infection, 42 for malignancy, 23 for trauma, and 23 for deformity. Fifty-nine patients (48.0%) had at least one medical or 90-day operative complication, with 22 patients (17.9%) having two or more complications. Patients with a diagnosis of infection were more likely to undergo two-level corpectomies (80% vs 26.1%, p < 0.0005). Patients with a diagnosis of malignancy had significantly higher 90-day mortality (19.0% vs 4.9%, p = 0.022) and were more likely to undergo three-level corpectomies (9.5% vs 3.7%, p = 0.002) and upper thoracic (T1–4) corpectomies (37.9% vs 12.4%, p = 0.001), and sustain a pleural injury (14.3% vs 2.5%, p = 0.019). Ninety-day reoperation rates (p = 0.970), postoperative ventilator days (p = 0.224), intensive care unit stays (p = 0.350), hospital lengths of stay (p = 0.094), neurological injuries (p = 0.338), and dural tears (p = 0.794) did not significantly vary between the different groups.

CONCLUSIONS
Nearly half of the patients undergoing a TCT will experience an unanticipated short-term complication related to the procedure. Short-term complications may vary with the underlying patient diagnosis.
Evaluasi Stabilitas Sediaan Krim Ekstrak Etanol Daun Afrika (Vernonia amygdalina Delile) dengan Basis Vanishing Cream (VC)
Authors: Nainggolan Maria T. , Simaremare Eva S. , Pratiwi Rani D. 
Published: September 2023

Daun afrikaÂ (Vernonia amygdalina) contains flavonoids, tannins, saponins, and terpenoids that can be used forÂ pharmacology activity: annihilate theÂ parasites that causing schistosomiasis, malaria leishmaniasis, antiamoeba, antitumor and antimicrobials. The purposes of this research were to screen the phytochemistry of african leaf, formulateÂ and test the stability of vanishing cream (VC)Â base. The methods used were sample collection, extract preparation, formulation, and stability evaluation. The results showed thatÂ extract afrikaÂ leavesÂ had alkaloids, flavonoids, tannins, saponins, steroids, and triterpenoids. ExtractÂ of daun afrika can be madeÂ toÂ good VC base formula including organoleptic test, homogeneity test, pH test, spreading test, sticky test, and VC safety test by distributing questionnaires. The cream was stabil for 21 days at room temperature. Observation of physical properties good performed every week to organoleptis, pH, adhesion, and spreading power.Â Â Key words:Â stability, V. amygdalina, kill parasites, Vanishing Cream
Emerging Trends and Advances in the Diagnosis of Gastrointestinal Diseases
Authors: Noor Muhammad Nouman , Nazir Muhammad , Ashraf Imran 
Published: September 2023

Recently, Artificial Intelligence (AI)-based techniques, namely machine learning (ML) and deep learning (DL) have gained exceptional devotion in conducting the analysis of medical images because of their capacity to provide outstanding results that can compete with specialists. Despite the rise of artificial intelligence-based research on peptic ulcer diseases, limited reviews are available concerning this area. For this purpose, the researcher reviewed artificial intelligence techniques used for detecting and classifying gastrointestinal diseases in wireless capsule endoscopy images. Furthermore, this study investigates the tremendous potential for peptic ulcer disease that has been cited in the prior literature. The findings demonstrated the value of WCE picture analysis using machine learning and deep learning techniques. Additionally, further, limitations were found in the availability of datasets and assessment measures, which have an impact on the reproducibility of experiments.
The Effects of Task-Based Language Teaching on EFL Learners’ Speaking Performance
Authors: Ngọc Nguyễn Thị Lan 
Published: September 2023

In spite of the current needs for human resources with the ability to communicate using English, most of Vietnamese learners still have many difficulties in speaking after a long time of study. In order to tackle this issue in English education, Task-based Language Teaching (TBLT) was strongly recommended by the Ministry of Education and Training with the aim to shift the educational view to a more supportive and efficient perspective for learners’ communicative competence. In this context, the study was conducted to explore the effects of TBLT on EFL students’ speaking performance. This quasi-experimental research was carried out on 60 participants from a hospitality college in Ho Chi Minh City. The students in the experimental group were instructed with TBLT for eight weeks while those in the control group were taught with a conventional method. The research data were gathered via two instruments of tests (pre- and post-test) to measure the students’ speaking performance before and after the treatment, and a questionnaire to discover their attitudes towards the implementation of TBLT. The analysis and interpretation of research data were conducted thanks to the use the software SPSS. Particularly, pre-test and post-test scores of the two groups were compared in terms of mean values with the employment of an independent samples t-test. As for the questionnaire, mean value and standard deviation of each item were calculated and interpreted. The findings indicated that TBLT significantly improves the students’ speaking ability and they have positive attitudes towards its employment in their speaking classes.
Ciencias económicas: nuevos retos
Authors: Escobar Andres 
Published: September 2023

Hoy en día, las ciencias económicas enfrentan diversos desafíos. Uno de los cuales tiene ver con la integración de diversos saberes provenientes de disciplinas diferentes con el fin de generar nueva evidencia científica y que permita comprender la compleja realidad de nuestras sociedades.
Es por ello que la revista científica Panorama Económico de la Universidad de Cartagena presenta un numero orientado a profundizar diferentes problemáticas sociales y empresariales. Es así, que se reúnen resultados de proyectos de investigación que permiten comprender problemáticas relacionadas con el impacto de las tecnologías de información y comunicaciones en los trabajadores colombianos, y los impactos socioeconómicos causados por la emergencia del Covid19. Por otro lado, trabajos que buscan comprender las dinámicas económicas empresariales en sector manufacturero colombiano y latinoamericano.
En éste sentido, este número inicia con documentos que guardan estrecha relación. De una parte, Fernando Barrios, Martha Castellanos, Diana Álvarez y Milena Riveros analizan los principales impactos que tienen las nuevas tecnologías en los trabajadores colombianos, en particular sobre sus salarios y plantean la necesidad de políticas públicas necesarias para fortalecer las habilidades y destrezas tecnológicas de los trabajadores (Barrios et al., 2022). De manera complementaria, Raúl Gómez y Manuel Alejandro Oviedo estudian las vulnerabilidades y los impactos socioeconómicos en Barrancabermeja (Colombia) ocasionados por la emergencia sanitaria de Covid19, identificando las zonas de la ciudad y las familias más vulnerables (Gómez y Oviedo, 2022).