bluuebunny/crossref_metadata_2025_split huggingface dataset:
Measuring Heart Rate Variability in Free-Living Conditions Using Consumer-Grade Photoplethysmography: Validation Study
Authors: Lam Emily , Aratia Shahrose , Wang Julian , Tung James 
Published: July 2020

Background
Heart rate variability (HRV) is used to assess cardiac health and autonomic nervous system capabilities. With the growing popularity of commercially available wearable technologies, the opportunity to unobtrusively measure HRV via photoplethysmography (PPG) is an attractive alternative to electrocardiogram (ECG), which serves as the gold standard. PPG measures blood flow within the vasculature using color intensity. However, PPG does not directly measure HRV; it measures pulse rate variability (PRV). Previous studies comparing consumer-grade PRV with HRV have demonstrated mixed results in short durations of activity under controlled conditions. Further research is required to determine the efficacy of PRV to estimate HRV under free-living conditions.

Objective
This study aims to compare PRV estimates obtained from a consumer-grade PPG sensor with HRV measurements from a portable ECG during unsupervised free-living conditions, including sleep, and examine factors influencing estimation, including measurement conditions and simple editing methods to limit motion artifacts.

Methods
A total of 10 healthy adults were recruited. Data from a Microsoft Band 2 and a Shimmer3 ECG unit were recorded simultaneously using a smartphone. Participants wore the devices for >90 min during typical day-to-day activities and while sleeping. After filtering, ECG data were processed using a combination of discrete wavelet transforms and peak-finding methods to identify R-R intervals. P-P intervals were edited for deletion using methods based on outlier detection and by removing sections affected by motion artifacts. Common HRV metrics were compared, including mean N-N, SD of N-N intervals, percentage of subsequent differences >50 ms (pNN50), root mean square of successive differences, low-frequency power (LF), and high-frequency power. Validity was assessed using root mean square error (RMSE) and Pearson correlation coefficient (R2).

Results
Data sets for 10 days and 9 corresponding nights were acquired. The mean RMSE was 182 ms (SD 48) during the day and 158 ms (SD 67) at night. R2 ranged from 0.00 to 0.66, with 2 of 19 (2 nights) trials considered moderate, 7 of 19 (2 days, 5 nights) fair, and 10 of 19 (8 days, 2 nights) poor. Deleting sections thought to be affected by motion artifacts had a minimal impact on the accuracy of PRV measures. Significant HRV and PRV differences were found for LF during the day and R-R, SDNN, pNN50, and LF at night. For 8 of the 9 matched day and night data sets, R2 values were higher at night (P=.08). P-P intervals were less sensitive to rapid R-R interval changes.

Conclusions
Owing to overall poor concurrent validity and inconsistency among participant data, PRV was found to be a poor surrogate for HRV under free-living conditions. These findings suggest that free-living HRV measurements would benefit from examining alternate sensing methods, such as multiwavelength PPG and wearable ECG.
Experiences of Serving and Ex-Serving Members With the PTSD Coach Australia App: Mixed Methods Study
Authors: Shakespeare-Finch Jane , Alichniewicz Karolina K , Strodl Esben , Brown Kelly , Quinn Catherine , Hides Leanne , White Angela , Gossage Gabrial , Poerio Loretta , Batras Dimitri , Jackson Samantha , Styles Jess , Kavanagh David 
Published: July 2020

Background
PTSD Coach Australia is an app for serving and ex-serving defense members and was adapted for the Australian context in 2013 from PTSD Coach, which was created in the United States.

Objective
This study aimed to provide a user-centered evaluation of the app from the perspective of serving and ex-serving members of the Australian Defence Force.

Methods
Qualitative data were collected in response to questions to participants in 1 of 5 workshops (n=29) or in telephone interviews (n=24). Quantitative data were collected using the user version of Mobile Apps Rating Scale (uMARS).

Results
Analysis of the qualitative data demonstrated mixed support for the app. While some people found it extremely useful, especially as an adjunct to therapy, others pointed out limitations and cautioned against the app potentially triggering symptoms in people with PTSD. This perceived risk was usually found to stem from frustration with the app’s functionality rather than its content. Participants spoke about the helpful and unhelpful aspects of the app and barriers to its use and made suggestions for improvement. Many participants encouraged its continued use and highlighted the need for it to be promoted more broadly, as many were not aware of it until they were invited to participate in this research.

Conclusions
PTSD Coach Australia was seen in a positive light by some participants, but others thought it had too much text and the potential to trigger a traumatic response in users with PTSD. A need to update the app was also a common comment as was the need to increase awareness of the app’s existence.
COVID-19 Mortality Underreporting in Brazil: Analysis of Data From Government Internet Portals
Authors: Veiga e Silva Lena , de Andrade Abi Harb Maria Da Penha , Teixeira Barbosa dos Santos Aurea Milene , de Mattos Teixeira Carlos André , Macedo Gomes Vitor Hugo , Silva Cardoso Evelin Helena , S da Silva Marcelino , Vijaykumar N L , Venâncio Carvalho Solon , Ponce de Leon Ferreira de Carvalho André , Lisboa Frances Carlos Renato 
Published: July 2020

Background
In Brazil, a substantial number of coronavirus disease (COVID-19) cases and deaths have been reported. It has become the second most affected country worldwide, as of June 9, 2020. Official Brazilian government sources present contradictory data on the impact of the disease; thus, it is possible that the actual number of infected individuals and deaths in Brazil is far larger than those officially reported. It is very likely that the actual spread of the disease has been underestimated.

Objective
This study investigates the underreporting of cases and deaths related to COVID-19 in the most affected cities in Brazil, based on public data available from official Brazilian government internet portals, to identify the actual impact of the pandemic.

Methods
We used data from historical deaths due to respiratory problems and other natural causes from two public portals: DATASUS (Department of Informatics of the Unified Healthcare System) (2010-2018) and the Brazilian Transparency Portal of Civil Registry (2019-2020). These data were used to build time-series models (modular regressions) to predict the expected mortality patterns for 2020. The forecasts were used to estimate the possible number of deaths that were incorrectly registered during the pandemic and posted on government internet portals in the most affected cities in the country.

Results
Our model found a significant difference between the real and expected values. The number of deaths due to severe acute respiratory syndrome (SARS) was considerably higher in all cities, with increases between 493% and 5820%. This sudden increase may be associated with errors in reporting. An average underreporting of 40.68% (range 25.9%-62.7%) is estimated for COVID-19–related deaths.

Conclusions
The significant rates of underreporting of deaths analyzed in our study demonstrate that officially released numbers are much lower than actual numbers, making it impossible for the authorities to implement a more effective pandemic response. Based on analyses carried out using different fatality rates, it can be inferred that Brazil’s epidemic is worsening, and the actual number of infectees could already be between 1 to 5.4 million.
Jenis Jamur Kayu Makroskopis Sebagai Media Pembelajaran Biologi (Studi di TNGL Blangjerango Kabupaten Gayo Lues)
Authors: Hasanuddin Hasanuddin 
Published: July 2020

Penelitian ini bertujuan mengetahui jenis-jenis jamur makroskopis yang terdapat di kawasan Taman Nasional Gunung Leuser Kecamatan Blangjerango Gayo Lues. Metode yang digunakan observasi dan jelajah yaitu melakukan pengamatan langsung ke lokasi penelitian. Luas daerah penelitian adalah 5 Ha yang dibagi menjadi 5 stasiun dan pada masing-masing stasiun dibuat 10 transek sehingga jumlah transek 50 dengan panjang 100 m, lebar kiri dan kanan 20 m. Analisis data dilakukan secara deskriptif. Hasil penelitian diperoleh 28 spesies jamur terdiri dari 18 genus yaitu Ganoderma, Grifola, Hexagonia, Hirchioporus, Pycnoporus, Tremella, Auricularia, Collybia, Coriolus, Hypholoma, Pleurotus, Phylloporus, Marasmius , Clavaria, Clitocybe, Crepidotus, Rigidoporus, Tremidis, Coriolus, Lactarius, Mycena, Clitocybe, Clitocybula, Pluteus, Pleurotus. Anggota genus yang paling banyak ditemukan adalah genus ganoderma 3 spesies. Dari hasil tersebut, disimpulkan bahwa jamur makroskopis tersebut layak digunakan sebagai media pembelajaran biologi di sekolah.

Kata Kunci:	Identifikasi, Jamur Makroskopis dan Media Pembelajaran biologi.

This research was conducted to investigate the species of wood macroscopic fungi in National Park of Gunung Leuser, Blangjerango Gayo Lues. The methods used were direct observation and survey. The area of research was 5 Ha, divided into 5 stations with 10 transect stations for each. So, the number of transects were 50 transect stations with the length of 100 m, the width of the left and right was 20 m. The data were analyzed by descriptive analysis. The result showed that there were 28 species from 18 genera, namely Ganoderma, Grifola, Hexagonia, Hirchioporus, Pycnoporus, Tremella, Auricularia, Collybia, Coriolus, Hypholoma, Pleurotus, Phylloporus, Marasmius, Clavaria, Clitocybe, Crepidotus, Rigidoporus, Tremidis, Coriolus, Lactarius, Mycena, Clitocybe, Clitocybula, Pluteus, Pleurotus. The most common genera found in the location was 3 species from Ganoderma. It can be concluded that the wood macroscopic fungi in National Park of Gunung Leuser, Blangjerango Gayo Lues is suitable to be used for media in learning biology at school.

Keywords: Macroscopic Fungi, Biology Learning and Media
POPULASI BURUNG RANGKONG BADAK (Buceros rhinoceros) DI EKOSISTEM TAHURA POCUT MEURAH INTAN PROVINSI ACEH
Authors: Kamal Samsul , Agustina Elita , Azhari Azhari 
Published: July 2020

Burung rangkong badak (Buceros rhinoceros) merupakan salah satu spesies burung dari familia Bucerotidae yang terdapat di Taman Hutan Raya Pocut Meurah Intan Provinsi Aceh. Tingginya laju deforestasi habitat dan pembukaan lahan di kawasan Taman Hutan Raya Pocut Meurah Intan akan memberi dampak negatif dan mempercepat penurunan populasi burung rangkong badak. Penelitian tentang “Populasi Burung Rangkong Badak (Buceros rhinoceros) di Ekosistem Tahura Pocut Meurah Intan Provinsi Aceh” dilaksanakan pada bulan November 2016. Tujuan penelitian ini adalah untuk mengetahui jumlah individu dan kepadatan populasi burung rangkong badak (Buceros rhinoceros) yang terdapat di Tahura Pocut Meurah Intan. Metode yang digunakan dalam penelitian ini adalah metode titik hitung yang dikombinasikan dengan transect quadrat. Pengumpulan data dilakukan dengan cara observasi langsung pada objek penelitian. Pengamatan dilakukan selama 6 hari mulai dari pukul 06.30 s.d 10.00 WIB, dan dilanjutkan sore hari dari pukul 16.00 s.d. 18.00 WIB. Parameter yang diamati dalam penelitian ini adalah jumlah individu dan kepadatan populasi burung rangkong badak (Buceros rhinoceros). Analisis data dilakukan dengan menghitung kepadatan populasi burung rangkong badak (Buceros rhinoceros) menggunakan formula kepadatan populasi Eisenberg (1981). Hasil penelitian menunjukkan bahwa jumlah burung rangkong badak (Buceros rhinoceros) yang terdapat di Tahura Pocut Meurah Intan berjumlah 14 individu. Kepadatan populasi rangkong badak (Buceros rhinoceros) di Tahura Pocut Meurah Intan yaitu 1,4 individu/Km2.
PEMANFAATAN JENIS TUMBUHAN OBAT TRADISIONAL DI DESA BATU HAMPARAN KABUPATEN ACEH TENGGARA
Authors: Yassir Muhammad , Asnah Asnah 
Published: July 2020

Tujuan penelitian ini adalah untuk mengetahui manfaat jenis tumbuhan obat yang ada di Desa Batu Hamparan Kecamatan Lawe Alas Kabupaten Aceh Tenggara. Metode dalam penelitan adalah survey. Pengumpulan data dilakukan dengan menggunakan observasi, wawancara dan dokumentasi. Analisis data yang diperoleh dianalisis secara deskriptif dan disajikan dalam bentuk tabel dan gambar. Berdasarkan hasil penelitian disimpulkan bahwa ditemukan 46 spesies jenis tumbuhan obat tradisional di Desa Batu Hamparan Kecamatan Lawe Alas Kabupaten Aceh Tenggara.
Penggunaan Papain dari Buah Pepaya Sebagai Peningkat Kualitas pH Nata De Coco yang Difermentasi oleh Acetobacter xylinum
Authors: Zulfiana Zulfiana , Samingan Samingan , Thomy Zairin 
Published: July 2020

A study was carried out on the use of papain from papaya as quality enhancer for nata de coco which is fermented by Acetobacter xylinum in industrial home business in Cot Geundreut Village, Blang Bintang Aceh Besar. The aim of the study was to find out whether the use of Papain can improve the quality of color, texture, pH and taste of nata de coco. The study used a complete factorial randomized design, with the concentration of papaya and papaya sap was 5 mL/L, 10 mL/L, 20 m/L, 30 mL/L, 50 mL/L. In ANAVA, the treatment showed a significant effect of papaya juice and papaya sap on nata de coco quality (Papaya juice (26,989) > Ftable (2,61); α = 0,05 and Papaya sap (122,542) > Ftable (2,61); α = 0,05. The treatment has no significant effect to the color, but it increased the pH of nata de coco to 6-7, and the structure of nata de coco became less chewy. However, although the organoleptic test does not affect the taste of nata de coco, respondents still prefer nata de coco without treatment because it has no trace of papaya and papaya sap smell. Therefore, this study needs further research to get more information about the taste.
PENINGKATAN PRESTASI BELAJAR BIOLOGI MATERI SISTEM PENCERNAAN MAKANAN DENGAN METODE MIND MAPPING PADA SISWA KELAS XI-MIA SMA NEGERI 1 MADAT TAHUN PELAJARAN 2018/2019
Authors: Musliani Musliani , Desriana Putri 
Published: July 2020

The purpose of this research is to determine the using of mind mapping method in improving the learning achievement of biology in the food digestion system material in class XI-MIA of Madat senior high school (SMAN 1 Madat). This research is a classroom action research that is conducted in two cycles. The problems in learning can gradually be solved by applying the mind mapping method. The use of mind mapping method can improve student learning achievement in learning biology of the food digestive system in class XI-MIA of Madat Senior High School (SMAN 1 Madat). This is indicated by the increased percentage of student completeness. In the first cycle (I), the percentage of student learning completeness is 19 (65,52%) students and in the second cycle (II), the percentage increases to 26 (89.66%) students. The mind mapping method gives the meaning for the student because every student experiences real learning by themselves and participates directly in learning. The level success of using the mind mapping method in improving the student learning outcomes in studying food digestive system material in class XI-MIA (SMAN 1 Madat) was successful. This is evident from the results of the assessment when learning by using the mind mapping method has increased. The average of every class increases from the first cycle (I) which is only 70.69% and in the second cycle (II) increase to be 86.21% in the student learning completeness. From the learning observation result, the percentage of 70% in the first cycle increases to 86% in the second cycle.
Desenvolvimento de um Modelo Dinâmico e Adaptativo como Ferramenta para a Orientação Estratégica em Organizações do Setor Aeroespacial
Authors: Sales Leite Dinah Eluze , Chagas Junior Milton de Freitas 
Published: July 2020

Objetivo: O artigo propõe um modelo estratégico, dinâmico e adaptativo com o objetivo de melhorar a captura e o aproveitamento de oportunidades na seleção do portfólio de tecnologias em ambientes complexos e incertos.Método: A metodologia definida nesta pesquisa é o estudo de casos múltiplos na abordagem Design Science. Através do desenvolvimento e da aplicação do modelo proposto, busca-se gerar conhecimento científico sobre a seleção de tecnologias em organizações do setor aeroespacial. O estudo também considera uma forte combinação das lógicas indutiva e abdutiva, para lidar com a incerteza inerente ao ambiente de P&D.Originalidade/Relevância: Do ponto de vista teórico, pode-se destacar, como principais lacunas da estratégia tecnológica no setor aeroespacial, as tomadas de decisão sob incerteza, a falta de integração entre as áreas nas tomadas de decisão e as limitações no horizonte de tempo do desenvolvimento estratégico.Resultados: Os principais resultados esperados, com a aplicação do modelo são: (1) melhorar a captura e o aproveitamento de oportunidades, (2) melhorar a vantagem competitiva da organização e (3) contribuir com uma estratégia tecnológica mais flexível em longo prazo. Os casos explorados permitiram o detalhamento dos impactos das tomadas de decisão sobre o desenvolvimento estratégico e do domínio das tecnologias na definição das rotas tecnológicas. Contribuições teóricas: A pesquisa contribui, do ponto de vista teórico, com o modelo de capacidades dinâmicas, ao incluir o seizing ao generative sensing.Contribuições para gestão: Do ponto de vista prático, o desenvolvimento do modelo contribui com a gestão estratégica das organizações aeroespaciais, no sentido de tornarem-nas mais robustas, ágeis e flexíveis.
Competências Operacionais e Industria 4.0: Revisão Sistemática da Literatura
Authors: Teixeira de Souza Marina , Almada Santos Fernando César 
Published: July 2020

Objetivo: Identificar estudos na temática de competências operacionais e Indústria 4.0 entre os anos de 2011 até 2019.Método: Foi realizada uma revisão sistemática da literatura dentre o período mencionado e utilizando a base de dados Web of Science.Originalidade/Relevância: Ressalta-se que estudos na área da Indústria 4.0 e Competências Operacionais são recentes e requerem atenção e pesquisas, dessa forma, este trabalho contribui para abertura de novas perspectivas a fim de aprofundar estudos nessa temática.Resultados: Os resultados apontam que, a partir da revisão sistemática da literatura, as principais Competências Operacionais identificadas na Indústria 4.0 são: Flexibilidade e Adaptabilidade, Aprendizagem Contínua, Inovação/Criatividade e Iniciativa/Disposição, Resiliência, Liderança, Trabalho em equipe, Comunicação, Negociação, Pensamento sistêmico, Planejamento, Resolução de problemas, Tomada de decisão e Autonomia.Contribuições teóricas: A principal contribuição teórica do estudo realizado é a identificação das Competências Operacionais identificadas na literatura sobre Indústria 4.0. Sendo assim, esse estudo abre espaço para novas perspectivas e aprofundamento nessa temática.
Gaya Mengajar Guru PNS dan Honorer di Sekolah Dasar Negeri 55/I Sridadi, Jambi
Authors: Chan Faizal , Kurniawan Agung Rimba , Ningsih Sutria , Amri Khairul , Febriana Ari Surya , Wisudawati Novita , Irani Vina Sandra 
Published: July 2020

The aim of this research is to describe the teaching style of the servant and honorarium teacher in elementary school number 55/I Sridadi on years 2019/2020. This research use qualitative descriptive. The collecting of the data were use observation and interview. Interview were do with servant, honorarium and head master in elementary school number 55/I Sridadi, Analysis data was use interactive model (Miles and Huberman) and to test the validity data use triangulation data. The result from this research got there is differentiate among servant and honorarium teacher in teaching style in elementary school number 55/I Sridadi on years 2019/2020.
Penggunaan Pendekatan Keterampilan Proses Padapembelajaran Tematik Terpadu Untuk Meningkatkan Aktivitas Belajar Siswa
Authors: Saputra Anton , Firman Firman , Neviyarni Neviyarni 
Published: July 2020

This study aims to improve the students’ activities and learning outcomes in grade 3 of Public Elementary School 24 in Luak Bayau Sulit Air Kecamatan X Koto Diatas Kabupaten Solok. This research is a Classroom Action Research (PTK) that is an improvement in the learning process. In doing so, the study consisted of two cycles. Each cycle was held two meetings consisting of planning, action, observation, and reflection of each meeting. Results of the data analysis show that the using of the skill process approach can improve the student’s activities and thematic learning outcomes in the student’s crafts themed in grade 3 SD Negeri 06 Sulit Air Rawang. So that the learning activities of students in the first cycle with student’s average score of 66.7 (standard qualification), increased in the second cycle is on student’s average with 84.3 (good qualifying). On the other side, the learning outcomes of students in the first cycle with an average of 75.6 (good qualifying), also increased in the second cycle is the average score of 84.2 (better qualifying).
Laparoscopic Appendectomy with Immersive Appendiceal Stump Closure in Patient with Vermiform Appendix Abnormality
Authors: Muzhikov S. P. , Eremenko M. Yu. , Shefer V. V. , Selezneva E. E. 
Published: July 2020

Background. Acute appendicitis is a common emergency surgical pathology, with laparoscopic appendectomy being the “gold standard” in its treatment.Aim. We report a clinical case of laparoscopic appendectomy with immersive appendiceal stump closure in a patient with vermiform appendix abnormality.Materials and methods. Patient K. was emergently admitted to the Surgical Hospital of Ekaterininskaya Clinic in June 2019 with a clinical picture of acute appendicitis. Symptoms, disease anamnesis, instrumental and laboratory examinations conformed to acute appendicitis.Results and discussion. The patient was rendered an emergent surgery. Intraoperative picture corresponded to acute phlegmonous appendicitis with malformation (a wide conical base) of the vermiform appendix. Immersive appendiceal stump closure was chosen as treatment. Alternative opinions coexist on justifying a particular appendiceal stump closure strategy. Immersive treatment is our method of choice in terms of implementation and safety in the particular clinical case. Th is method requires the surgeon’s technical experience.Conclusion. A clinical case is reported of performing laparoscopic appendectomy with immersive appendiceal stump closure in a patient with vermiform appendix malformation. Despite the appendix abnormality, immersive treatment of the appendiceal stump was justified as safe in this case and entailed no complications in postoperative period.