bluuebunny/crossref_metadata_2025_split huggingface dataset:
Correlation Between Computer Self-Efficacy Belief and Computer Value Belief during the New Normal
Authors: Borinaga Almila Amihan R. , Aunzo Rodulfo T. 
Published: August 2021

In the light of the New Normal, the students' attention has moved to computer technology. Thus, this research study investigated the VSU-Isabel students' computer self-efficacy and computer value during the New Normal. The study employed quantitative-descriptive research utilizing the mean and standard deviation of the students' responses in the survey items. It also employed a correlational approach in establishing the relationship between students' computer self-efficacy and computer value. A convenience sampling technique was used to arrive at a sample of 687 student-respondents from 1st year to 5th year. The research study revealed that the students are undecided if they can use computers compared to the other students. Also, it was found out that students agreed about the value of computers. Additionally, the study revealed that there is a significant and low positive correlation, r (685) = .387, p = .01, between the students' computer self-efficacy belief and computer value belief during the New Normal. These findings recommend the expanded use of technology during the new normal such as using different available digital platforms to develop the computer self-efficacy of the students.
High-resolution Extinction Map in the Direction of the Strongly Obscured Bulge Fossil Fragment Liller 1*
Authors: Pallanca Cristina , Ferraro Francesco R. , Lanzoni Barbara , Crociati Chiara , Saracino Sara , Dalessandro Emanuele , Origlia Livia , Rich Michael R. , Valenti Elena , Geisler Douglas , Mauro Francesco , Villanova Sandro , Moni Bidin Christian , Beccari Giacomo 
Published: August 2021

Abstract
We used optical images acquired with the Wide Field Camera of the Advanced Camera for Surveys on board the Hubble Space Telescope and near-infrared data from Gemini Multi-conjugate Adaptive Optics System (GeMS)/Gemini South Adaptive Optics Imager (GSAOI) to construct a high-resolution extinction map in the direction of the bulge stellar system Liller 1. In spite of its appearance of a globular cluster, Liller 1 has been recently found to harbor two stellar populations with remarkably different ages, and it is the second complex stellar system with similar properties (after Terzan 5) discovered in the bulge, thus defining a new class of objects: the Bulge Fossil Fragments. Because of its location in the inner bulge of the Milky Way, very close to the Galactic plane, Liller 1 is strongly affected by large and variable extinction. The simultaneous study of both the optical and the near-infrared color–magnitude diagrams revealed that the extinction coefficient R

V
in the direction of Liller 1 has a much smaller value than commonly assumed for diffuse interstellar medium (R

V
= 2.5, instead of 3.1), in agreement with previous findings along different light paths to the Galactic bulge. The derived differential reddening map has a spatial resolution ranging from 1″ to 3″ over a field of view of about 90″ × 90″. We found that the absorption clouds show patchy substructures with extinction variations as large as δE(B − V) ∼ 0.9 mag.
Broadband High-energy Emission of the Gamma-Ray Binary System LS 5039: Spectral and Temporal Features Using NuSTAR and Fermi Observations
Authors: Yoneda Hiroki , Khangulyan Dmitry , Enoto Teruaki , Makishima Kazuo , Mine Kairi , Mizuno Tsunefumi , Takahashi Tadayuki 
Published: August 2021

Abstract
We report a detailed analysis of the hard X-ray and GeV gamma-ray spectra of LS 5039, one of the brightest gamma-ray binary system in the Galaxy. The Nuclear Spectroscopic Telescope Array (NuSTAR) observation covering its entire orbit in 2016 allowed us for the first time to study the orbital variability of the spectrum above 10 keV. The hard X-ray spectrum is well described with a single power-law component up to 78 keV. The X-ray flux showed a slight deviation from those observed previously with Suzaku in 2007. The fast X-ray brightening observed with Suzaku, around the inferior conjunction, was not observed in this observation. We also analyzed 11 yr of Fermi Large Area Telescope data of LS 5039. The GeV spectrum around the inferior conjunction was well described with two nonthermal components: a power law with a photon index of ∼3 and a cutoff power law with a cutoff energy of ∼2 GeV. The orbital flux variability also changed gradually around a few GeV. These results indicate that there are two emission components in the GeV band, and the dominant component above ∼1 GeV does not depend on the orbital phase. By combining these results, we update the spectral energy distribution of LS 5039 with the highest available statistics. Theoretical models proposed so far cannot explain the obtained multiwavelength spectrum, especially the emission from ∼1 to ∼400 MeV, and we discuss the possibility that particle acceleration in LS 5039 is different from the shock acceleration.
Distribution of macroalgae in the area of Calvi (Corsica)
Authors: Katz Lea , Sirjacobs Damien , Gobert Sylvie , Lejeune Pierre , Danis Bruno 
Published: August 2021

Macroalgae play a structuring role in benthic ecosystems, which makes it very important to monitor their cover rates and study their community structures and changes in time. Such studies are usually led by autonomous divers and often do not generate sufficient data to provide enough material for strategically-sound conservation plans. This paper describes the dataset generated in the framework of the evaluation of the potential of a complementary data acquisition method: annotating videos transects obtained using an underwater Remotely Operated Vehicle (ROV).
The focus was on Cystoseira brachycarpa, together with the abundance of several other macroalgae species, which could be identified using the ROV images after validation through specimen identification. Furthermore, in order to allow future uses, such as monitoring the status of colonisation of the invasive algae Caulerpa cylindracea, the ROV was sent to some deeper transects on sedimentary habitats (40 m) below the Posidonia meadows lower limits.
The project, while providing some interesting insights on using a ROV as a tool to study marine biodiversity, generated a dataset for the distribution of 19 macroalgae on both standardised and new transects in the Bay of Calvi (Katz et al. 2021). The observed species of macroalgae included: Acetabularia acetabulum, Amphiroa rigida, Caulerpa prolifera, Caulerpa cylindracea, Codium bursa, Colpomenia sinuosa, Corallinales (order), Cystoseira brachycarpa, Cystoseira crinita, Cystoseira spinosa, Cystoseira zosteroides, Dictyota (genus), Flabellia petiolata, Halopteris (genus), Halopteris scoparia, Jania (genus), Osmundaria volubilis, Padina pavonica and Peyssonnelia squamaria.
The videos also showed that the invasive algae Caulerpa cylindracea has spread between 2016 and 2019 and that more focused studies should be held in the Bay to assess the actual reach and possible impacts of this invasion.
Finally, our ROV video transects have also underlined the significant presence of particular benthic macroalgae communities over habitat zones described as "soft-bottom" on benthic habitat maps. Although the biomass per unit area of these communities is probably lower than for most coastal rocky bottoms, this widely-spread habitat type holds a contribution to primary production to be considered in coastal ecosystem models.
Benthic habitat mapping of Plazh Gradina – Zlatna ribka (Black Sea) and Karpathos and Saria Islands (Mediterranean Sea)
Authors: Nikolopoulou Stamatina , Berov Dimitar , Klayn Stefania , Dimitrov Lyubomir , Velkovsky Kiril , Chatzinikolaou Eva , Chatzigeorgiou Giorgos , Karamfilov Ventzislav , Pavloudi Christina 
Published: August 2021

Habitat mapping is nеcessary for the efficient conservation and protection of marine ecosystems. In addition, it is a requirement for EU Member States as stated in the European Union (EU) Habitats Directive (92/43/EEC), as well as necessary for the achievement and maintenance of 'good environmental status (GES)' of benthic marine habitats in the framework of the EU Marine Strategy Framework Directive (2008/56/EC).
This study provides baseline information on the marine benthic habitats of Sozopol Bay (Black Sea) and Karpathos and Saria Islands (Mediterranean Sea). These two Natura 2000 sites were selected as study sites of the RECONNECT project, which aimed at creating a transnational cooperative network to confront the environmental threats of ecosystems with a high natural and cultural interest, by the establishment of common practices and a joint regional strategy. The specific objective was to map the marine habitats using a defined a priori classification (EUNIS), with the ultimate purpose of supporting government marine spatial planning, management and decision-making processes through the development of a Decision Support System.
Mobile Application to Detect Covid-19 Pandemic by Using Classification Techniques: Proposed System
Authors: Al-zubidi Azhar , F. AL-Bakri Nadia , K. Hasoun Rajaa , Hassan Hashim Soukaena , Alrikabi Haider Th.Salim 
Published: August 2021

<p class="0abstract">Various mobile applications such as Mobile Health (mHealth) have been developed and spread across the world which has played an important role in mitigating the Coronavirus pandemic (COVID-19). As the COVID-19 pandemic spreads, several people have drawn parallels to influenza. While both viruses cause respiratory infections, they propagate in very different ways. This has a major impact on the public health measures that can be used to fight each virus. These viruses are pandemic-causing in the same way. That is, they both cause respiratory disease, and can present themselves in several ways, ranging from asymptomatic to severe and deadly. A proposal is presented in this paper that uses two algorithms to define and classify these pandemics, they are: The Back Propagation (BP) classification algorithm and the Fuzzy C-Mean (FCM) clustering algorithm. Two stages are implemented in the proposed system: in the first step, the FCM algorithm is used to find out the type of virus, and this algorithm is capable of handling ambiguous features of viruses. In the second step, a BP neural network is used as a classifier to detect the pandemic class. The proposed system was trained and tested using a well-known dataset (covid-19 vs influenza). Information Gain (IG) is used to optimize the related features that affect the classification process to improve speed and accuracy. The proposed mobile application is developed to support users easily detecting the COVID-19 infection by inputting the medical tests as significant features to the proposed system. The proposed system's accuracy is up to (89%), the framework was created using the Matlab programming environment and an Android Studio for Mobil application designing.</p>
Knowledge and Attitude toward Depression among Adolescents Attending Secondary Schools in an Urban Local Government Area of Lagos State, Nigeria
Authors: Lesi Awujoola F. , Balogun Mobolanle R. , Ladi-Akinyemi Temitope W. , Igwilo Ugonnaya U. 
Published: August 2021

Background:
Globally, depression is the fourth leading cause of mental illness and disability among adolescents (15–19 years). This study aimed to assess knowledge and attitude toward depression among adolescents attending secondary schools.

Methods:
This was a descriptive cross-sectional study among 257 adolescents attending secondary schools in an urban area of Lagos State. Multistage sampling technique was used to identify appropriate schools, and a semi-structured self-administered questionnaire that contained a vignette depicting depression was used to collect data. Data were analyzed using SPSS version 20.

Results:
Overall, 257 students participated in the study. The mean age was 15.8 ± 1.3 years. Majority (91.5%) had prior knowledge about depression. The most common sources of information were from school (38.9%), family and friends (23.3%), and social media (20.6%). Majority (87.9%) correctly recognized depression in the vignette. Attempted suicide and social withdrawal from friends (71% and 67.3%, respectively) were less recognized as symptoms of depression. Similarly, only 36.2% recognized depression as a real medical condition. Students in science (76.9%) had better knowledge about depression than students in arts (43.5%) and commerce (43.8%) (P = 0.006). The teacher was considered as the primary access to care compared to the need for specialized care. Majority of the respondents had positive attitudes toward depression and 75.4% believed that people with depression should not be stigmatized.

Conclusion:
This study showed important gaps in knowledge of causes, symptoms, and the need for professional or psychiatric care of depression. It highlights the need to promote mental health literacy in schools.
Risk factors for new-onset heart failure with reduced or preserved ejection fraction in patients with ischemic heart disease
Authors: Abdissa Senbeta Guteta 
Published: August 2021

Background:
Risk factors for heart failure (HF) with reduced ejection fraction (HFrEF) or HF with preserved ejection fraction (HFpEF) in Ethiopian and Sub-Saharan African patients with ischemic heart disease (IHD) is not well-known.

Methods:
This is a cohort study where 228 patients with IHD were recruited and followed retrospectively over 24 months period. Exclusion criteria were known HF at baseline and absence of echocardiography data. From baseline clinical and echocardiographic patient characteristics, risk factors for incident HFpEF and incident HFrEF were analyzed.

Results:
New-onset HF was diagnosed in 67.1% (153/228) of the patients. Median time to HF diagnosis was 12.02 (3.42–13.31) months in HFrEF and 12.06 (2.66–15.28) months in HFpEF. There was no significant difference between HFrEF and HFpEF in time to incident HF. On univariate regression analysis risk factors for incident total HF were age, diabetes, and left atrium (LA) size. Diabetes, systolic blood pressure (SBP), diastolic blood pressure, LA and diastolic left ventricular dimension (LVD) had significant association with HFrEF. Age, sex, hypertension, SBP, and diastolic LVD were significantly associated with HFpEF. On cox regression analysis diabetes and LA dimension were associated with total HF while diastolic LVD was associated with incident HFpEF and HFrEF. Age, diabetes, and dimension of LA were also associated with HFrEF.

Conclusion:
These data suggest a major role for age, sex, diabetes, bigger LA size, and diastolic LVD as predictors of HFrEF and HFpEF in patients with IHD. Strategies directed to prevention and treatment of diabetes, dilatation of left ventricle and LA may prevent a considerable proportion of HFrEF or HFpEF.
An investigation of the relationship of the admission hyperglycemia to severity and 30-day outcome in acute ishemic and intracerebral hemorraghic stroke
Authors: Agabi Osigwe Paul , Ojo Oluwadamilola Omolara , Danesi Mustapha Abudu , Ojini Frank Ibe , Okubadejo Njideka Ulumna 
Published: August 2021

Background:
Hyperglycemia is implicated as deleterious in acute stroke, although the impact may vary by stroke subtype. We sought to determine the frequency of admission hyperglycemia (subcategorized as diabetes related or reactive) and explore the relationship to stroke severity and functional motor outcome in acute ischemic stroke (AIS) and intracerebral hemorrhage (ICH) stroke subtypes.

Methods:
This cross-sectional study recruited 170 stroke patients (85 AIS, 85 ICH) presenting within 72 h of onset. Baseline characteristics including stroke severity (National Institutes of Health Stroke Scale score), random blood glucose (RBG), and glycated hemoglobin (HBA1C) were documented. The outcomes were 30-day case fatality rate (CFR) and functional motor outcome.

Results:
The frequency of admission hyperglycemia was 24.7% in AIS and 22.4% ICH, with 18.8%/5.9% of AIS and 9.4%/12.9% of ICH presumed diabetes related and reactive, respectively. Stroke severity and infarct size were positively correlated with admission RBG and HBA1C (P = 0.000) in AIS but not ICH. Presumed mechanism of hyperglycemia did not relate significantly with either infarct size or hematoma volume (P > 0.05). Thirty days CFR was higher in AIS with hyperglycemia (42.9%) compared to normoglycemia (12.5%) (P = 0.003), but did not vary significantly in ICH (42.1% with and 36.4% without hyperglycemia; P = 0.65). There was no significant relationship of hyperglycemia to functional outcome in either stroke subtype.

Conclusions:
The association of admission hyperglycemia to stroke severity and short-term case fatality is evident in AIS. In ICH, hyperglycemia was not associated with significantly greater stroke severity and death at 30 days, even though case fatality was higher in those with hyperglycemia.
Prevention of Thromboembolism in Elderly
Authors: Sahoo Panchanan , Padhee B. N. , Jena Anupam , Mishra H. N. 
Published: August 2021

Abstract
Venous and arterial thrombosis and thromboembolism are a leading cause of suffering in elderly population. The prevalence of venous and arterial thrombosis (formation of blood clot) and thromboembolism (breakage of thrombus to travel somewhere in circulation) is high in elderly population those above 60 years and poses important cause of morbidity and mortality. Annual incidence of venous thrombosis is 1 in 1000 which rises after age of 45 years and arterial thrombosis as high as 20% as per pooled MPN. Spectrum of thromboembolism (TE) is diverse and etiology, and pathogenesis is varied ranging from atrial fibrillation, hypertension, diabetes mellitus (DM), dilated cardiomyopathy and ischemic cardiomyopathy (ICM), congestive heart failure, acute coronary syndrome, and cases of fracture immobilization leading to deep venous thrombosis and pulmonary embolism or else arterial occlusion leading to cardiac or cerebral strokes Aim of the update is to bring a broad overview of the problem to prevent late disastrous outcomes, putting forth two exemplary case studies of imminent TE risk. Case 1 – elderly hypertensive presenting with paroxysmal AF with high CHA2DS visual analog scale score needing anticoagulation and Case 2 – case of DM, post- percutaneous transluminal coronary angioplasty (PTCA), ICM, severe left ventricular (LV) dysfunction with LV thrombus in sinus rhythm needing anticoagulation. Elderly population suffer from diseases of diverse etiology exposing to high risk of TE and at the same time high bleeding risk of the anticoagulants. Elderly population with diverse disease ailments exposed to high risk of TE and bleeding complications and hence should be dealt with utmost care and sympathy to avoid TE and bleeding complications.
Septic Arthritis of the Hip After Percutaneous Coronary Intervention
Authors: Koduru Gopala Krishna , Basineni Hari Krishna , Dandamudi Srinivas , Palaparti Raghuram , Pendyala Suman , Chowdary P. S. S. 
Published: August 2021

Abstract
Infective complications of cardiac catheterization have come down significantly in the past few decades but are occasionally reported. We report one such complication in an elderly female who developed septic arthritis of the hip due to Staphylococcus aureus infection following percutaneous coronary intervention through right femoral access. After an initial conservative strategy with girdlestone excision arthroplasty, she underwent a total hip replacement surgery as a staged procedure after the complete resolution of infection. With the increasing usage of femoral vascular access and vascular closure devices for various complex cardiac interventions in the present-day cardiac catheterization laboratory, a morbid complication like septic hip arthritis should be borne in mind whenever a patient presents with fever and hip joint pain, particularly when there are disproportionate or no significant local findings. Strict aseptic precautions, early identification by considering a magnetic resonance imaging scan early in the clinical course, and aggressive management are the key to better outcomes.
Massive Hemothorax Following Failed Internal Jugular Vein Access During An Electrophysiological Procedure
Authors: Harish Ponnana Hemanth , Satish Oruganti Sai 
Published: August 2021

Abstract
We report an unusual case of massive hemothorax in a female patient undergoing electrophysiological (EP) procedure for drug-refractory supraventricular tachycardia. She underwent percutaneous intervention with a drug-eluting stent to the right coronary artery 6 months back and was on dual antiplatelet drugs. Timely detection and management of hemothorax prevented a major catastrophe in this patient. This case highlights the importance of keeping a strict vigil for possible occurrence of life-threatening bleeding complications during EP procedure in patients on multiple antiplatelet drug therapy.
Balloon Inflation-Assisted Trapping and Successful Retrieval of Partially Fractured and Entrapped Guidewire
Authors: Sinha Santosh Kumar , Razi Mahmodullah , Sharma Awadesh Kumar , Pandey Umeshwar 
Published: August 2021

Abstract
Guidewire fracture (either partial or complete) is an exceedingly rare complication of which is mostly encountered in percutaneous coronary intervention (PCI) of complex lesions. It can be managed mostly with using percutaneous techniques, but at times requires a surgical approach as well. Here, we report a case of a 67-year-old male who underwent PCI of totally occluded proximal left anterior descending artery. Due to excessive manipulation, tip of Sion blue wire (polymer-jacket guidewire) got trapped into the lesion. To unloop the wire, spring tip got partially fractured. The guiding catheter was pushed over the fractured wire near the fracture point and a 2.5 mm × 10 mm Sapphire semi-compliant balloon (Orbus Neisch, Netherland) was inflated near the tip of guiding catheter at 12 atm pressure, and whole assembly was pulled out to successfully retrieve the partially fractured and retained wire.