bluuebunny/crossref_metadata_2025_split huggingface dataset:
Concept for Hole Cleaning in Deviated-Well Drilling Based on Top-Side Drillstring Movements
Authors: Hovda Sigve , Sangesland Sigbjørn 
Published: December 2020

Summary
In a deviated wellbore, hole cleaning problems are often present at depths where the inclination angle is between 30 to 60° from vertical. As a result, a cuttings bed is formed that is difficult to remove. When the drillstring is laying in the bed, rotation is an efficient way to remove cuttings. However in the curved section, the drillstring is often located on the high side of the wellbore because the normal components of the tension forces are larger than the gravitational forces. In this paper, we describe a concept in which lateral drillstring movement between the high side and the cuttings bed will induce jet flows that lift cuttings into the main stream for more effective hole cleaning. Completely proving this concept requires both experimental work and analysis using cuttings transport models. Such models and experiments require knowledge of what lateral motions can actually be induced by proper control of the hoisting system in a real well. The focus of this paper is therefore to outline a drillstring model that is able to tailor a concept for inducing a variety of lateral motions for any wellbore geometry and drillstring configuration.
The model is a multidimensional-lumped-element model that describes the axial movement in a drillstring in deviated wellbores, including both static and dynamic Coulomb friction forces. Depending on which parts of the drillstring are stalled due to static friction, the drillstring movements follow different semianalytical submodels. The model is switching between computationally efficient submodels and is therefore suitable for a real-time implementation.
Economic Burden of Moderate to Severe Burns and its Association with Health-related Quality of Life of Nigerian Women
Authors: Chinweuba Anthonia U , Chinweuba Ifunanya S. , Diorgu Faith C. , Ubochi Nneka E. , Ezeruigbo Chinwe S. , Wasini Kenneth B. , Nnabuenyi Anthonia I. 
Published: December 2020

Abstract
Background Burns cases are frequent in Nigeria hospitals, however, literature on its economic burden and the association with health-related quality of life (HRQOL) of women in Nigeria is scarce. This study determined the burden of hospitalization after burns on women’s economic status and its associated HRQOL.Methods This was a three-month cross-sectional study of female patients ≥ 25 years, treated of mixed or full thickness burns in four teaching hospitals in south-east Nigeria, discharged between September-November, 2018. Study instruments were participants’ case notes for socio-demographic and disease history, interviewer-administered questionnaires, namely-economic-burden-of-burns questionnaire and English version of the EuroQol Five-Dimensions-Three-Level Health Questionnaire for Nigeria. Data were collected on second- or third-day post-discharge through home visits or phone calls. This lasted for thirteen weeks. Results A total of seventy-three female patients with burn were successfully enrolled. Most participants were married, fairly educated, mainly traders or housewives. Thirty-four (46.6%) had subjective estimated family monthly income below NGN 50,000 (low economic status). Participants’ average monthly income reduced drastically after hospitalization. Their average family monthly income was NGN110,439 (USD307), while their average total expenses incurred during hospitalization was NGN691,093 (USD1,920). Almost all (93.2%) had at least one surgical intervention during management. Their average length of hospital stay was 35.4 days; eleven consequently lost their job. Many had moderate to severe economic burden of treatment; only eleven could bear all the treatment expenses independently. Women in the low economic class were more inclined to extreme anxiety/depression (p = .001) and pain/discomfort (p = .002) dimensions of HRQOL. Low and middle-class women had poorer health state on the EQ VAS scale than the high class. Conclusion Burns places high level of economic burden on women and unfortunately, Nigerian government’s commitment to healthcare of burns patients is low. The long course of hospitalization and economic depletion impact negatively on the women’s HRQOL. Based on these findings, we recommend that government parastatals create special trust fund for burns treatment and the National Health Insurance Scheme be restructured for more accessibility.
Implementation of Telemedicine in a Tertiary Hospital–Based Ambulatory Practice in Detroit During the COVID-19 Pandemic: Observational Study
Authors: Garg Alpana , Goyal Sachin , Thati Rohit , Thati Neelima 
Published: December 2020

Background
The COVID-19 pandemic, caused by SARS-CoV-2, has forced the health care delivery structure to change rapidly. The pandemic has further widened the disparities in health care and exposed vulnerable populations. Health care services caring for such populations must not only continue to operate but create innovative methods of care delivery without compromising safety. We present our experience of incorporating telemedicine in our university hospital–based outpatient clinic in one of the worst-hit areas in the world.

Objective
Our goal is to assess the adoption of a telemedicine service in the first month of its implementation in outpatient practice during the COVID-19 pandemic. We also want to assess the need for transitioning to telemedicine, the benefits and challenges in doing so, and ongoing solutions during the initial phase of the implementation of telemedicine services for our patients.

Methods
We conducted a prospective review of clinic operations data from the first month of a telemedicine rollout in the outpatient adult ambulatory clinic from April 1, 2020, to April 30, 2020. A telemedicine visit was defined as synchronous audio-video communication between the provider and patient for clinical care longer than 5 minutes or if the video visit converted to a telephone visit after 5 minutes due to technical problems. We recorded the number of telemedicine visits scheduled, visits completed, and the time for each visit. We also noted the most frequent billing codes used based on the time spent in the patient care and the number of clinical tasks (eg, activity suggested through diagnosis or procedural code) that were addressed remotely by the physicians.

Results
During the study period, we had 110 telemedicine visits scheduled, of which 94 (85.4%) visits were completed. The average duration of the video visit was 35 minutes, with the most prolonged visit lasting 120 minutes. Of 94 patients, 24 (25.54%) patients were recently discharged from the hospital, and 70 (74.46%) patients were seen for urgent care needs. There was a 50% increase from the baseline in the number of clinical tasks that were addressed by the physicians during the pandemic.

Conclusions
There was a high acceptance of telemedicine services by the patients, which was evident by a high show rate during the COVID-19 pandemic in Detroit. With limited staffing, restricted outpatient work hours, a shortage of providers, and increased outpatient needs, telemedicine was successfully implemented in our practice.
Retracted: "Assessing the Dissemination of COVID-19 Articles Across Social Media With Altmetric and PlumX Metrics: Correlational Study"
Authors: Tornberg Haley N , Moezinia Carine , Wei Chapman , Bernstein Simone A , Wei Chaplin , Al-Beyati Refka , Quan Theodore , Diemert David J 
Published: December 2020

Background
The use of social media assists in the distribution of COVID-19 information to the general public and health professionals. Alternative-level metrics (ie, altmetrics) and PlumX metrics are new bibliometrics that can assess how many times a scientific article has been shared and how much a scientific article has spread within social media platforms.

Objective
Our objective was to characterize and compare the traditional bibliometrics (ie, citation count and impact factors) and new bibliometrics (ie, Altmetric Attention Score [AAS] and PlumX score) of the top 100 COVID-19 articles with the highest AASs.

Methods
The top 100 articles with highest AASs were identified with Altmetric Explorer in May 2020. The AASs, journal names, and the number of mentions in various social media databases of each article were collected. Citation counts and PlumX Field-Weighted Citation Impact scores were collected from the Scopus database. Additionally, AASs, PlumX scores, and citation counts were log-transformed and adjusted by +1 for linear regression, and Spearman correlation coefficients were used to determine correlations.

Results
The median AAS, PlumX score, and citation count were 4922.50, 37.92, and 24.00, respectively. The New England Journal of Medicine published the most articles (18/100, 18%). The highest number of mentions (985,429/1,022,975, 96.3%) were found on Twitter, making it the most frequently used social media platform. A positive correlation was observed between AAS and citation count (r2=0.0973; P=.002), and between PlumX score and citation count (r2=0.8911; P<.001).

Conclusions
Our study demonstrated that citation count weakly correlated with AASs and strongly correlated with PlumX scores, with regard to COVID-19 articles at this point in time. Altmetric and PlumX metrics should be used to complement traditional citation counts when assessing the dissemination and impact of a COVID-19 article.
Predictors, Outcomes, and Statistical Solutions of Missing Cases in Web-Based Psychotherapy: Methodological Replication and Elaboration Study
Authors: Karin Eyal , Crane Monique Frances , Dear Blake Farran , Nielssen Olav , Heller Gillian Ziona , Kayrouz Rony , Titov Nickolai 
Published: December 2020

Background
Missing cases present a challenge to our ability to evaluate the effects of web-based psychotherapy trials. As missing cases are often lost to follow-up, less is known about their characteristics, their likely clinical outcomes, or the likely effect of the treatment being trialed.

Objective
The aim of this study is to explore the characteristics of missing cases, their likely treatment outcomes, and the ability of different statistical models to approximate missing posttreatment data.

Methods
A sample of internet-delivered cognitive behavioral therapy participants in routine care (n=6701, with 36.26% missing cases at posttreatment) was used to identify predictors of dropping out of treatment and predictors that moderated clinical outcomes, such as symptoms of psychological distress, anxiety, and depression. These variables were then incorporated into a range of statistical models that approximated replacement outcomes for missing cases, and the results were compared using sensitivity and cross-validation analyses.

Results
Treatment adherence, as measured by the rate of progress of an individual through the treatment modules, and higher pretreatment symptom scores were identified as the dominant predictors of missing cases probability (Nagelkerke R2=60.8%) and the rate of symptom change. Low treatment adherence, in particular, was associated with increased odds of presenting as missing cases during posttreatment assessment (eg, odds ratio 161.1:1) and, at the same time, attenuated the rate of symptom change across anxiety (up to 28% of the total symptom with 48% reduction effect), depression (up to 41% of the total with 48% symptom reduction effect), and psychological distress symptom outcomes (up to 52% of the total with 37% symptom reduction effect) at the end of the 8-week window. Reflecting this pattern of results, statistical replacement methods that overlooked the features of treatment adherence and baseline severity underestimated missing case symptom outcomes by as much as 39% at posttreatment.

Conclusions
The treatment outcomes of the cases that were missing at posttreatment were distinct from those of the remaining observed sample. Thus, overlooking the features of missing cases is likely to result in an inaccurate estimate of the effect of treatment.
PENGARUH PENEMPATAN DISTRIBUTED GENERATION (DG) TERHADAP KEANDALAN PENYULANG MRA05 GI MRICA BANJARNEGARA
Authors: Winardi Bambang , Sukmadi Tedjo , Wista Sinuraya Enda , Nugroho Agung 
Published: December 2020

Tenaga listrik merupakan kebutuhan pokok bagi masyarakat, sehingga kontinuitas penyediaan tenaga listrik menjadi tuntutan yang semakin besar dari konsumen. Penyulang MRA05 GI Mrica Banjarnegara menyuplai energi listrikuntuk sebagian wilayah Kecamatan Rakit Kabupaten Banjarnegara sampai tahun2017 memiliki 4 Distritributed Generation (DG), yaitu PLTMH Sigebang 500 KW, PLTMH Kincang 320 KW, PLTMH Adipasir 320 KW, PLTMH Rakit 500 KW.Berdasarkan data catatan pada tahun 2017 Penyulang MRA05 mengalami pemadaman sebanyak 15 kali/tahun, dengan total lama padam 38,68 jam/tahun, hal ini tentunya cukup mengganggu kontinuitas penyaluran energi listrik ke konsumen. Berdasarkan permasalah tersebut maka perlu adanya studi tentang perhitungan tingkat keandalan sistem tenaga listrik pada penyulang MRA05.Pada penelitian ini dibahas besarnya indeks keandalan (SAIFI, SAIDI, CAIDI) pada saat kondisi DG tidak terpasang dan terpasang. Perhitungan besarnya indeks keandalan dilakukan dengan menggunakan metode Reliability Index Assesment (RIA) , hasil perhitungan dibandingkan dengan hasil simulasi software ETAP 12.6.0. Indeks keandalan berdasarkan metode RIA saat DG tidak terpasang, dan nilai SAIFI adalah 2,96228 gangguan/tahun, besar SAIDI adalah 9,1185 jam/tahun, nilai CAIDI sebesar 3,078 jam/gangguan, Saat DG terpasang, besar SAIFI adalah 2,96228 gangguan/tahun, besar SAIDI adalah 7,567 jam/tahun, besarnya CAIDI adalah 2,5546 jam/gangguan
Analisa Kualitas Website BPJS Kesehatan Dengan Metode Webqual dan Importance-Performance Analysis
Authors: Budihartanti Cahyani , Rusiyati Sri , Badrul Mohammad 
Published: December 2020

Sebagai penyedia jasa pelayanan dan informasi, bpjs-kesehatan.go.id, diharapkan dapat memberikan pelayanan dan informasi yang berguna bagi pengguna. Untuk mengetahui apakah suatu website telah memiliki nilai guna dapat dilihat dengan cara menganalisa kualitas dari website tersebut. Oleh karena itu penelitian ini bertujuan untuk mengevaluasi kualitas dari website BPJS, berdasarkan dari persepsi pengguna. Untuk mengetahui tingkat kepuasan dengan menerapkan metode webqual serta metode Importance Performance Analysis, dimana metode webqual berfokus pada usability, information quality dan service interaction quality berdasarkan persepi dari pengguna website. Sedangkan Metode IPA yang diterapkan pada penelitian ini berguna untuk menganalisis tingkat kesesuaian dan tingkat kesenjangan berdasarkan persepsi pengguna dengan harapan pengguna. Pada Metode IPA tingkat kesenjangan digambarkan dalam kuadran IPA, yang terdiri dari empat kuadran. Instrument yang digunakan pada penelitian ini adalah berupa kuesioner dengan teknik random sampling yang disebar kepada pengguna website BPJS Kesehatan. Hasil dari penelitian ini diharapkan dapat diketahui parameter mana yang perlu mendapatkan prioritas perbaikan pada tampilan website.
Kontrol Motor AC 3 Fasa Pada Peluncur Peluru Kendali
Authors: Sufyani Rosyidin , R Syafruddin , Ramady Givy Devira , Mahardika Andrew Ghea , Nataliana Decy 
Published: December 2020

Latar belakang penelitian adalah kebutuhan kontrol motor ac 3 fasa diperlukan untuk mendapatkan posisi yang presisi, dimana motor ac 3 phasa dengan daya antara 0,25 s/d 1 kw bila digunakan untuk membuat gerak posisi yang presisi, cukup sulit, karena adanya momen inersi, saat diam diperintah jalan proses waktu mulai dari kecepatan nol ke kecepatan nominal cukup lama, kira kira 1 s/d 2 detik, begitu juga saat dari putaran normal diperintah berhenti kekecepatan nol proses waktu berhenti berkisar 2 s/d 3 detik, sedangkan yang kita inginkan waktu mulai 0,5 detik dan waktu berhenti 0,75 detik, berhenti tepat di posisi yang diperintahkan. Permasalahan ini sangat menggangu didalam membuat kontrol sistem yang lain, karena waktu yang cukup lama saat mulai dan saat berhenti, proses ini akan berulang setiap saat sesuai modulasi sinyal kontrol yang diterima oleh sistem kontrol motor, sedang waktu operasi sistem yang diinginkan hanya 30 detik dalam mengikuti target biar tidak hilang di bidikan kamera, mulai dari awal target didapat s/d akhir proses saat menyalakan tombol penyalaan, seperti yang digunakan dalam mengontrol peluncur peluru kendali. Waktu diproses peluncur hanya ada sekitar beberapa menit, untuk pencarian, penguncian dan penyalaan, kalau tidak objek yang mau di kunci akan hilang dari pengamatan.
Pengaruh Penggunaan Campuran Bioetanol dari Biji Cempedak dalam Pertamax terhadap Kinerja Motor Matik
Authors: Prasetya Andika , Rifky  , Yusuf D M 
Published: December 2020

Penelitian ini menggunakan biji cempedak hasil fermentasi dan pemurnian, sebagai bioetanol. Tujuan penelitian adalah untuk mengetahui pengaruh campuran bioetanol dalam pertamax terhadap kinerja mesin, dan untuk mendapatkan campuran yang optimal bioetanol dalam pertamax. Desain penelitian ini adalah eksperimen dengan objek penelitian motor matik, menggunakan putaran mesin sebesar 1500 rpm sampai 3600 rpm panjang interval 300 rpm dengan menggunakan dynamometer. Penggunaan campuran bioetanol dalam pertamax yang optimal didapat pada campuran 17% bioetanol dan 83% pertamax karena sudah mencapai oktan optimal yaitu 96,10, pada campuran 15% bioetanol dan 85% pertamax dapat mengurangi penggunaan bahan bakar tidak memerlukan modifikasi kendaraan, dimana menghasilkan kinerja maksimal. Torsi maksimal sebesar 9,32 N.m pada putaran mesin 2400 rpm. Daya efektif maksimal sebesar 4,77 kW pada putaran mesin 2400 rpm. Penurunan konsumsi bahan bakar spesifik maksimal adalah 0,013354063 kg/kW.jam pada putaran mesin 2400 rpm.
Pengaruh Doping Kromium (Cr) Terhadap Sifat Kekerasan Pada Pembuatan Roda Gigi Lurus Berbahan Serbuk Besi (Fe)
Authors: Saragih Albed Daniel , Sutjipto Slamet 
Published: December 2020

Roda gigi adalah bagian dari mesin yang memiliki bentuk sangat kompleks sehingga diperlukan ketelitian dan keahlian khusus didalam proses pembuatannya. Metalurgi serbuk menawarkan suatu proses pembuatan yang efisien guna menghasilkan bagian-bagian permesinan yang kompleks tersebut. Pada penelitian ini dipilih serbuk logam Cr untuk meningkatkan sifat kekerasan dari roda gigi lurus berbahan dasar serbuk besi (Fe). Doping Cr sebesar 0%; 0,5%; 10%, 1,5% dan 2,0% akan ditambahakan pada pembuatan roda gigi. Air digunakan sebagai pengikat dengan ratio 1:15 yang selanjutnya dikompaksi sebesar 15,000 kg atau 15 ton diteruskan dengan dipanaskan atau sintering pada suhu 1200 oC selama 1 jam. Ratio penyusutan sampel terhadap perlakuan sintering rata-rata 4.6%. Sebesar 0.2 kg beban yang terapkan pada pengujian kekerasan Vickers. Nilai kekerasan Vickers diperoleh sebesar 60, 77, 90, 184 dan 211 masing-masing untuk doping Cr sebesar 0%; 0,5%; 10%, 1,5% dan 2,0%. Dari data tersebut didapat bahwa penambahan unsur Cr meingkatkan sifat kekerasan pada roda gigi besi. Nilai kekerasan yang ditunjukkan masih terlalu kecil hal ini disebabkan oleh masih banyak porositas yang ditimbulkan pada proses sintering karena tidak dalam kondisi vakum.
Ultrasound performed right after birth can predict the respiratory support needs of neonates----A diagnostic accuracy study
Authors: Xi Guannan , Dai Jiale , Xuefeng Wang , Lu Chengqiu , Luo Fei , Yang Yun , Wang Jimei 
Published: December 2020

Abstract Background Lung ultrasound (LUS) has been used to diagnose
neonatal respiratory diseases. However, few simple method has been
reported to predict respiratory support needs(RSN). Our aim was to
determine the diagnostic accuracy of a semiquantitative LUS assessment
method predicting respiratory support need. Methods We conducted a
prospective diagnostic accuracy study following the STARD (Standards for
the Reporting of Diagnostic Accuracy Studies) guidelines at a tertiary
level academic hospital between 2019 and 2020. After birth, infants were
transferred to a monitoring room to determine NICU treatment need. 310
late preterm and term infants with respiratory symptoms enrolled. The
LUS assessment was performed for each participant at one of the
following times: 0.5 h, 1 h, 2 h, 4 h, and 6 h after birth. Reliability
was tested by ROC analysis. Surfactant administration and other RSNs
were based on the 2019 European guidelines as well as the infant’s
clinical condition. Results 74 have RSN, and 236 were healthy according
to a 3-day follow-up confirmation. Six LUS imaging patterns were found.
Two “high-risk” patterns were highly correlated with RSN(area under
the curve (AUC) = 0.95; 95% CI, 0.92-0.98, p<0.001). This
accuracy is supported by the AUC of “low-risk” patterns (0.89, 95%
CI, 0.85-0.93, p<0.001). The predictive value of LUS is
greater than that of only using respiratory symptoms (e.g., respiratory
rate) (AUC of LUS vs AUC of respiratory rate, p<0.01).
Conclusions LUS is a useful tool to predict RSN and is more reliable
than assessments based on respiratory symptoms alone.
Peminggiran Perempuan dalam Kuasa Kelahiran dan Perkembangan Dolalak
Authors: Marwah Sofa , Lestari Soetji , Widyastuti Tri Rini 
Published: December 2020

The oral history of the birth of dolalak dance differs from other traditional dance legends in Java, such as ronggeng, lengger or tayub. The birth of the traditional dances is related to female figures. The dolalak dance was invented by native soldiers (male) during the Dutch colonial period. This paper aims to examine dolalak as an arena of power and the contribution of women to dolalak in the context of historical reflection. This research is a qualitative study that uses data collection techniques by interviewing, observing, and is supported by documentation studies as well as related previous research. The results of this study show that dolalak becomes the arena of power in its invention. There is a major power in interpreting the invention of dolalak, namely by soldiers (men). As for its development, the dolalak becomes an arena for power struggles that surrounds it. The dolalak is performing art. The dolalak also a medium for spreading Islam, and then the power by the state over it. The power struggles of dance operate and be practiced, from one meaning to another, until the power of state enters. It strengthens the theorization of power. It will continue as a practice of power. In this context, the contribution of women as figures preserving the dance is vulnerable to the invisible. Dolalak dance is mostly performed by female dancers and this has become an icon for people in Purworejo Regency, Central Java. Therefore, it is time for women as traditional dance preservers to be narrated and fill in public knowledge.
Efecto de los abonos orgánicos y dosis de un biofertilizante en el rendimiento de quinua (Chenopodium quinoa), en Chachapoyas, Amazonas
Authors: Huamán Huamán Eyner , Vásquez Pérez Héctor , Salas López Rolando , Bobadilla Rivera Leidy Gheraldinne 
Published: December 2020

<p>El presente trabajo de investigación evaluó el efecto de tres tipos de abonos orgánicos más dos dosis de un biofertilizante en el rendimiento de quinua (<em>Chenopodium quinoa</em> Willd), variedad Negra Collana. Se utilizó un diseño en bloques completos al azar (DBCA) con seis tratamientos incluido un testigo absoluto. Los tipos de abono orgánico fueron humus de lombriz y guano de isla, mientras que las dosis del biofertilizante “biol” tuvieron niveles de 2,5y51/201 de agua. Posteriormente utilizando el software elibre R, se efectuó el análisis de varianza, y la prueba de comparaciones múltiples según Duncan. Las variables evaluadas fueron: altura de planta, longitud de panoja a la madurez fisiológica, y rendimiento alcanzado a la cosecha. Los resultados mostraron que el T7 (humus 5tn/ha con guano de isla 2tn/ha sumado biol a una dosis de 51/201de agua) obtuvo los mayores valores en cuantoa altura de planta (75,78cm), longitud de panoja (40,llcm) y rendimiento (3,01tn/ha), incrementándose estos valores muy por encima de los obtenidos en el testigo, que obtuvo los datos más bajos. Se concluye que los abonos orgánicos y el biofertilizante, en el T7, influyeron positivamente para obtener los mejores rendimientos.</p>