bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analisis Keamanan Website Menggunakan Teknik Footprinting dan Vulnerability Scanning
Authors: Alwi Erick Irawadi , Herdianti Herdianti , Umar Fitriyani 
Published: August 2020

Website security is an effort to protect websites from hacker attacks connected through a network. Website security needs to be a concern in the midst of many cases of website hacking from irresponsible people, including websites at Indonesian tertiary institutions that provide information and services to the public, students, and alumni of tertiary institutions.
Higher education institution websites that can be accessed widely online can create vulnerabilities against threats from hacker attacks. To minimize this vulnerability, it is necessary to test the website of the higher education institution to assess and evaluate the security system of the university's website. The research method used in this study is the Ethical Hacking method which focuses on footprinting techniques and vulnerability scanning by only testing passive attacks. The results of this study have found information related to the target website (the website of an educational institution in one of the cities in Indonesia) and several vulnerability alerts after testing vulnerability scanning with high to low risk levels so that researchers recommend improving vulnerability to minimize security holes exploited by hackers .
YIKICI SİSMİK YÜKLER ALTINDA SİLİNDİRİK ÇELİK SU TANKLARININ DOĞRUSAL OLMAYAN ANALİZİ
Authors: ÇELİK Ali İhsan , KÖSE M. Metin , AKGÜL Tahir , APAY Ahmet Celal 
Published: August 2020

Silindirik
çelik sıvı tankları; su, petrol ve endüstriyel kimyasallar gibi çeşitli
sıvıları depolamak için yaygın olarak kullanılmaktadırlar. Ayrıca son yıllarda
nükleer enerji santrallerinde soğutma amaçlı kullanımları yaygınlaşmaktadır.
Çelik sıvı tanklarındaki petrol veya diğer tehlikeli kimyasallar, deprem esnasında
tanklarda oluşan hasarlar sebebi ile büyük finansal ve çevresel zarara neden
olabilmektedir. Önemli mühendislik yapıları olan bu tankların, doğal titreşim
periyotları 0,1 sn.- 0,5 sn. aralığındadır. Bu kısa periyotta meydana gelen
maksimum deprem enerjisinden dolayı tanklarda hasarlar oluşabilir. Bu çalışma
için, silindirik çelik tanklardaki deformasyonlar, burkulmalar çok kısa sürede meydana
geldiği için 0,22 saniyelik El-Centro deprem kaydı kullanılmıştır. Bununla birlikte, yıkıcı ve kısa süreli
kuvvetler altında yapıların dinamik analizinde ANSYS Workbench “Explicit
Dynamics” aracı çok iyi sonuçlar verdiğinden, seçilen bu süre ve deprem verisi,
doğrusal olmayan analiz için ideal olmuştur. Su ve tank duvarı arasındaki etkileşimi
sağlamak için suyun modellenmesinde, “Eulerian Body” ağ yapısı tekniği, “Explicit Dynamics” aracında tercih
edilmiştir. Analizde üstü-açık tank modeli, üstü-konik model ve üstü-kubbe
şeklinde kapatılan model kullanılmış ve üç farklı cidar kalınlığı için
analizler tekrar edilmiştir. Tank cidar kalınlığına ve tankın kapak şekline
bağlı olarak, meydana gelen deformasyon ve burkulmaların sebepleri
irdelenmiştir. Analiz sonucunda, silindirik çelik sıvı tanklarının kubbe
şeklinde kapatılmasının deformasyonları ve burkulmaları azalttığı görülmüştür
Pengaruh Model Pembelajaran Inkuiri Terbimbing dengan Pendekatan Berbasis Kontekstual (CBA) terhadap Literasi Kimia Peserta Didik Kelas XI MIPA SMA Negeri Jakarta pada Materi Hidrolisis Garam
Authors: Ade Mutia  , Hadinugrahaningsih Tritiyatma , Budi Setia 
Published: August 2020

Penelitian ini bertujuan untuk mengetahui pengaruh positif model pembelajaran inkuiri terbimbing dengan pendekatan berbasis kontekstual (CBA) terhadap literasi kimia peserta didik kelas XI MIPA SMA Negeri Jakarta pada materi hidrolisis garam. Penelitian dilakukan pada semester genap tahun ajaran 2018/2019. Metode penelitian yang digunakan adalah quasi-experiment dengan menggunakan the post-test only non-equivalent design. Sampel penelitian berjumlah 64 peserta didik kelas XI MIPA C (kelas kontrol) dan XI MIPA D (kelas eksperimen) yang dipilih dengan teknik purposive sampling. Instrumen posstest digunakan untuk mengukur tingkat literasi kimia peserta didik pada materi hidrolisis garam. Hasil penelitian menunjukkan bahwa kemampuan literasi kimia peserta didik kelas eksperimen 60,84% dengan kategori sedang sedangkan kemampuan literasi kimia kelompok kontrol 50,82% dengan kategori rendah. Berdasarkan perhitungan uji beda dengan Independent Sample T-test (α = 0,05) diperoleh nilai thitung (2,597) > ttabel (1,669). Berdasarkan hasil analisis penelitian dapat disimpulkan bahwa terdapat pengaruh positif pada penerapan model pembelajaran inkuiri terbimbing dengan pendekatan berbasis kontekstual (CBA) terhadap literasi kimia peserta didik kelas XI MIPA SMA Negeri Jakarta pada materi hidrolisis garam.
Kata kunci: Inkuiri Terbimbing, Pendekatan Kontekstual (CBA), Literasi Kimia, Hidrolisis Garam.
Egoism Seems Self- Destructive
Authors: Boro Alidou Razakou Ibourahima , Emile TONOUEWA Mèdessè , Alexis SEGUEDEME 
Published: August 2020

Being brought up under certain circumstances, a child may become an egoist. If he is not capable to adjust himself to some situations, he may destroy himself by certain unpleasant problems. In George Eliot's novel Daniel Deronda, Gwendolen, an inborn egoist is not probably able to cope with some situations mainly after her marriage. As a matter of fact, she has been increasingly arrogant, rebellious, heartless, disapproving, unhappy. Under such a situation she has contributed to her husband, Grandcourt’s drowning. Obviously, after her husband’s death, her future is dark for her. so, it can be admitted that she has ruined herself.
Oxytocin Versus Misoprostol Plus Oxytocin in the Prevention of Postpartum Hemorrhage at a Semi-Urban Hospital in sub-Saharan Africa: A Retrospective Cohort Study
Authors: Numfor Emmanuel , Fobellah Nkengafac Nyiawung , Tochie Joel Noutakdie , Njim Tsi , Ndesso Sylvester Atanga 
Published: August 2020

Background: Post-partum hemorrhage (PPH) is a leading cause of maternal mortality. Its first-line of prevention often entails uterotonic drugs like oxytocin and misoprostol which constitute a core point of management in low-resource settings of sub-Saharan Africa. This study aimed to assess the effectiveness of oxytocin alone compared with oxytocin plus misoprostol in two different eras (before and after the advert of misoprostol) of a semi-urban Cameroonian hospital.
Methods: This was a retrospective cohort study carried out between January 2015 to April 2015 and between January 2016 to April 2016 on a group of parturients (group A) who received only oxytocin and another administered oxytocin and misoprostol (group B), respectively. All participants delivered at the Bamenda Regional Hospital, Cameroon. The two different periods represent the era before and after the implementation of misoprostol in the prevention of PPH in this semi-urban hospital. Socio-demographic data, clinical characteristics and details of delivery as well as risk factors for PPH were studied from obstetric records.
Results: We studied the obstetric records of 1778 parturients were studied; 857 in group A and 879 in group B. Their mean age was 26.3 ±5.2 years. Both groups were comparable in several baseline sociodemographic and clinical characteristics. The prevalence of PPH was 2.7% (3.4% vs 2.2%; p = 0.0744). The risk of PPH in the oxytocin only group was about 1.5 times higher than in the oxytocin plus misoprostol group. The estimated blood loss between the two groups was statistically significant (1100 ± 150 vs 800 ± 100 ml, p< 0.0001). The active management of the third stage of labor without misoprostol was the only risk factor for PPH.
Conclusion and Global Health Implications: The implementation of misoprostol plus oxytocin in the prevention of PPH in this low-resource setting improved the obstetrical outcome by reducing the risk and the amount of blood loss during delivery.
Keywords: • Misoprostol • Oxytocin • Postpartum Hemorrhage • Cameroon

Copyright © 2020 Numfor et al. Published by Global Health and Education Projects, Inc. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in this journal, is properly cited.
Large-Scale Deployment of a Closed-Loop Drilling Optimization System: Implementation and Field Results
Authors: Lai Stephen W. , Ng James , Eddy Aaron , Khromov Sergey , Paslawski Dan , van Beurden Ryan , Olesen Lars , Payette Gregory S. , Spivey Benjamin J. 
Published: August 2020

Summary
On a land-based rig, the driller has many responsibilities and is rarely able to adjust the main process controls—weight on bit (WOB) and revolutions per minute (RPM)—on a continuous basis. The result is suboptimal drilling and longer spud-to-target depth (TD) time than necessary. Automatic, closed-loop optimization removes this burden and results in better and more consistent drilling performance. In this paper, a closed-loop drilling optimization system is presented with results from more than 1,700 wells in the field.
The closed-loop system builds on industry-proven advisory technology and is designed uniquely for petroleum drilling. Because formation characteristics can change rapidly with depth, a fast optimization algorithm based on input signal dithering is used to continually adjust drilling parameters to search for the highest possible rate of penetration (ROP) and lowest possible mechanical-specific energy (MSE). Drilling dysfunctions, such as stick-slip and formation stringers, are treated as discrete time events and mitigated using software protocols triggered by accurate detection algorithms. Also, operation of the inner loop autodriller is of critical importance and controlled using a specialized set of autodriller management protocols.
Over the past 2 years, the system has been deployed on more than 270 rigs for construction of more than 1,700 land wells in North America. One of the main deployment challenges was the need for full organizational buy-in from both rig and office personnel. Another major challenge was the need for parameter limit roadmaps that define reasonable, but nonconservative, optimization limits to be used during the drilling of each well. Drilling performance on approximately 90 wells was analyzed and compared with equivalent offset wells. The result was an ROP improvement of 7.2% and 8.0% (2-year average) and 9.7% and 17.3% (last year average) for the vertical and lateral sections, respectively. A case study is presented highlighting improved ROP and decreased nonproductive time (NPT) when the optimization system was used.
Impacts of contracted endodontic cavities compared to traditional endodontic cavities in premolars
Authors: Juan Xia , weidong Wang , Zhengmao Li , Bingpeng Lin , Qian Zhang , Qianzhou Jiang , Yang Xuechao 
Published: August 2020

Abstract
Background: This study aims to compare the percentage of dentin removed, instrumentation efficacy, root canal filling and load at fracture between contracted endodontic cavities, and traditional endodontic cavities on root canal therapy in premolars. Methods: Forty extracted intact human first premolars were imaged with micro-CT and randomly assigned to the contracted endodontic cavity (CEC) or traditional endodontic cavity (TEC) groups. CEC was prepared with the aid of a 3D-printed template, canals were prepared with a 0.04 taper M-Two rotary instrument, and cavities were restored with resin. Specimens were loaded to fracture in an Instron Universal Testing Machine after a fatigue phase. The data were analyzed by the independent samples T test and Mann-Whitney U test, appropriate post hoc tests. Results: In the premolars tested in vitro, the percentage of dentin removed in the premolars with two dental roots in the CEC group (3.85% ± 0.42%) was significantly smaller (P < 0.05) than in the TEC group (4.94% ± 0.5%). The untouched canal wall (UCW) after instrumentation for TECs (16.43% ± 6.56%) was significantly lower (P< .05) than the UCW (24.42% ± 9.19%) for CECs in single-rooted premolars. No significant differences were observed in the increased canal volume and surface areas in premolars between the TEC and CEC groups (P > 0.05). CECs conserved coronal dentin in premolars with two dental roots but no impact on the instrument efficacy. There were no differences between the CEC groups and the TEC groups in the percentage of filling material and voids (P > 0.05). In addition, the mean load at failure of premolars did not significantly differ between the CEC and TEC groups and there was no significant difference in the type of fracture (P > 0.05). Conclusion: The results of this study suggest that CEC could not improve the fracture resistance of the endodontically treated premolars. The instrumentation efficacy and the percentage of filling material did not significantly differ between CECs and TECs in premolars.
Clinical outcome of surgical management for symptomatic metastatic spinal cord compression form prostate cancer.
Authors: Miyoshi Yasuhide , Kawahara Takashi , Yao Masahiro , Uemura Hiroji 
Published: August 2020

Abstract
Background Metastatic spinal cord compression (MSCC) from prostate cancer (PC) influences not only patients’ prognosis but also their quality of life. However, little is known about the clinical outcome of surgery for MSCC from PC. We evaluated both the oncological and functional outcomes of decompression and reconstruction surgery for patients with symptomatic MSCC from PC. Methods We assessed 19 patients who underwent decompression and reconstruction surgery for symptomatic MSCC from PC. Of these 19 patients, 8 had metastatic hormone-naïve PC (mHNPC) and 11 had metastatic castration-resistant PC (mCRPC). Results The median age of the patients with mHNPC and mCRPC was 72 and 65 years, respectively. The median prostate-specific antigen level at the time of diagnosis of MSCC in patients with mHNPC and mCRPC was 910 and 67 ng/mL, respectively. Although two of eight patients (25.0%) with mHNPC were ambulatory preoperatively, six patients (75.0%) were ambulatory postoperatively. Among 11 patients with mCRPC, only 3 (27.3%) were ambulatory preoperatively, while 6 (54.5%) were ambulatory postoperatively. The median postoperative overall survival among patients with mHNPC and mCRPC were not reached and 8 months, respectively. Conclusions Decompression and reconstruction surgery for symptomatic MSCC from PC might contribute to a favorable functional outcome among men with mHNPC and mCRPC. However, its role in improving the oncological outcome remains unclear. The treatment strategy should be chosen by shared decision-making among patients, urologists, radiation oncologists, and orthopedic surgeons.
A Needs Assessment for Postgraduate Training in Selected Public Health Disciplines: Evidence from Health Services Organisations in Lusaka, Zambia
Authors: Bulawayo Maio , Silumbwe Adam , Munakampe Margarate Nzala , Mukumbuta Nawa , Musabula Juliet , Chewe Mwimba , Mweemba Chris , Michelo Charles , Hangoma Peter 
Published: August 2020

Abstract
Background: As most low and middle-income countries seek to achieve universal health coverage targets, there is an ever-increasing need to train human resources with the required core skills and competencies. This study reports on the needs assessment conducted to understand postgraduate training needs for three selected public health disciplines – Health Policy and Systems, Health Economics, and Healthcare Management and Planning – at the University of Zambia. Methods: The study adopted a cross-sectional design, comprising qualitative and quantitative components. Data were collected through semi-structured interviews administered to 32 participants, identified through a comprehensive stakeholder mapping process, holding selected management positions in public and private health service organisations across Zambia. The organisations included regulatory authorities, research institutions, government ministries, insurance firms, multilateral and health services organisations. Results: Overall (n=22), more than 68% of the stakeholders reported that they had no employees that were formally trained in the three disciplines. More than 90% of the stakeholders opined that training in these disciplines would be beneficial in providing competencies to strengthen service provision. The horizontal skills mismatch for health economics, and health services management and planning were found to be 93% and 100%, respectively. Among the key public health training needs were: policy development and analysis, economic evaluation, and strategic management. Conclusions: This study confirms that introducing post graduate training in the proposed public health disciplines will not only benefit Zambian health services organisations, but also help strengthen the health systems in general. For other empirical contexts, the findings imply the need for the introduction of academic programmes which respond to ever-changing public health skills demanded; and should be matched with local priorities and service delivery.
Genetic diversity and different cross-neutralization capability of porcine circovirus type 2 isolates recently circulating in South Korea
Authors: Kang Seok-Jin , Kang Hyeonjeong , Yu Su-Hwa , Lee Hye Jeong , Lee Nakhyung , Hyun Bang-Hun , Cha Sang-Ho 
Published: August 2020

Abstract
Background: Porcine circovirus type 2 (PCV2) is a small single-stranded DNA virus and a primary cause of PCV-associated diseases (PCVAD) that result insubstantial economic loss for swine farms. Between 2016 and 2018, PCV2 field viruses were isolated from PCVAD-affected swine farms in South Korea and investigated for genetic and antigenic heterogeneity. Results: The genetic analysis of ORF2 showed that the genotype of the Korean PCV2 field isolates has been rapidly shifted from PCV2a or 2b to mutant PCV2b known as PCV2d with 82.6% to 100% amino acid sequence similarity. PCV2-specific monoclonal antibodies (mAbs) demonstrated variable antigen-binding activity to four representative Korean PCV2 field isolates [QIA215 (PCV2a), QIA418 (PCV2b), QIA169 (PCV2d), and QIA244 (PCV2d)] without genotype specificity, and one mAb showed neutralization activity to QIA215. In a cross-virus neutralization assay using anti-PCV2 sera of pigs and guinea pigs injected with a commercial vaccine and the Korean PCV2 field isolates, the anti-porcine sera of a commercial vaccine had high neutralization activity against QIA215 and QIA418 with statistically lower activity against PCV2d viruses. Anti-guinea pig sera of QIA215, QIA418, QIA169, and a commercial vaccine had high neutralization activity against all of the viruses with significantly lower activity against QIA244. Importantly, anti-guinea pig sera of QIA244 had high neutralization activity against all of the viruses. Conclusions: This study confirmed genetic and antigenic diversity among recent PCV2 field isolates in Korean swine farms, and the strain-based difference in virus neutralization capability should be considered for more effective control by vaccination.
Macronutrient, immunoglobulin A and total antioxidant capacity profiles of human milk: cross-sectional surveys at ages 6, 12, 18 and 24 months.
Authors: ongprasert krongporn , Ruangsuriya Jetsada , Malasao Rungnapa , Sapbamrer Ratana , Suppansan Pikul , Ayood Pisittawoot , Kittisakmontri Kulnipa , Siviroj Penprapa 
Published: August 2020

Abstract
Background: A longer duration of breastfeeding of up to two years is encouraged by many health authorities, but information regarding the composition of milk after one year postpartum is limited. The goal of this study was to determine the associations of macronutrient contents, immunoglobulin A (IgA) levels, and the total antioxidant capacity (TAC) in human milk (HM) with the month of lactation from 1 to 24 months postpartum.Methods: Milk samples were collected from mothers with healthy full-term children who had been lactating from 1 to 24 months from January 2019 to April 2019. HM was biochemically analyzed for protein and carbohydrate contents by colorimetric assays. The fat content was determined by capillary centrifugation, and the energy content was calculated from the results of centrifugation assays. IgA levels and the TAC were determined by ELISA and a Trolox equivalent antioxidant capacity (TEAC) assay, respectively. Pearson’s correlation coefficient and Spearman’s rank correlation coefficient were used to determine associations between milk composition and the month of lactation, and multiple regression analysis was used to assess the association between covariates and milk composition. Differences were considered significant at p < 0.05.Results: One hundred eighty-four milk samples were analyzed. The month of lactation was positively associated with the fat concentration (B = 0.31, SE = 0.09, p = 0.001), energy content (B = 3.11, SE = 0.92, p = 0.001), and IgA (B = 4.17, SE = 1.08, p < 0.001) but negatively associated with the carbohydrate concentration (B = -0.22, SE = 0.01, p = 0.04). No association was observed between the month of lactation and the protein concentration and TAC after adjustment for maternal age, maternal BMI, birth order, and breastfeeding frequency.Conclusions: Based on our results, fat, energy, and IgA contents in HM were positively associated with the month of lactation, and a slight but significant negative association was detected for the carbohydrate concentration up to two years postpartum.
Learning curve of digital intraoral scanning – an in vivo study
Authors: Róth Ivett , Czigola Alexandra , Joós-Kovács Gellért Levente , Dalos Magdolna , Hermann Péter , Borbély Judit 
Published: August 2020

Abstract
Background: The spread of digital technology in dentistry poses new challenges and sets new goals for dentists. The aim of the present in vivo study was to determine the learning curve of intraoral scanning described by (1) scanning time and (2) image number (count of images created by intraoral scanner during the scanning process).Methods: Ten dental students of Semmelweis University took part in the study. Dental students took digital study impressions using a 3Shape Trios 3® (3Shape, Copenhagen, Denmark) intraoral scanning device. Each student took 10 digital impressions on volunteers. Volunteer inclusion criteria included full dentition (except for missing third molars) and no prosthetic/restorative treatment. Digital impression taking was preceded by tuition consisting of both theoretical education and practical training. Digital impressions were taken of the upper and lower arches, and the bite was recorded according to the manufacturer's instructions. Total scanning times and image numbers were recorded.Results: The difference in scanning time between the first and the tenth digital impressions was significant (p=0.007). The average scanning time for the first impressions was 23 min 9 sec; for the tenth impressions, it was 15 min 28 sec. The difference between the scanning times of the first and the tenth procedures was 7 min 41 sec. The average image count for the first impressions was 1964.5; for the tenth impressions, it was 1468.6. The image count difference between the first and the tenth procedures was 495.9. The image count versus sequential number of measurement curve shows an initial decreasing tendency followed by a trough around the sixth measurement and a final increasing phase.Conclusion: Our results indicate an association between the sequential number of measurements and the outcome variables. The drop in scanning time is probably explained by a practice effect of repeated use, i.e. the students learned to move the scanning tip faster. The image count first showed a decreasing tendency, and after the sixth measurement, it increased; there was no consistent decline in mean scan count. Shorter scanning times are associated with poorer coverage quality, with the operator needing to make corrections by adding extra images; this manifests as the time function of image counts taking an increase after the sixth measurement.Trial registration: This study was approved by the University Ethics Committee of Semmelweis University (SE TUKEB number: 61/2016).