bluuebunny/crossref_metadata_2025_split huggingface dataset:
Fast Power Series Solution of Large 3-D Electrodynamic Integral Equation for PEC Scatterers
Authors: Negi Yoginder Kumar , Balakrishnan N. , Rao Sadasiva M. 
Published: March 2022

This paper presents a new fast power series solution method to solve the Hierarchal Method of Moment (MoM) matrix for a large complex, perfectly electric conducting (PEC) 3D structures. The proposed power series solution converges in just two (2) iterations which is faster than the conventional fast solver–based iterative solution. The method is purely algebraic in nature and, as such applicable to existing conventional methods. The method uses regular fast solver Hierarchal Matrix (H-Matrix) and can also be applied to Multilevel Fast Multipole Method Algorithm (MLFMA). In the proposed method, we use the scaling of the symmetric near-field matrix to develop a diagonally dominant overall matrix to enable a power series solution. Left and right block scaling coefficients are required for scaling near-field blocks to diagonal blocks using Schur’s complement method. However, only the right-hand scaling coefficients are computed for symmetric near-field matrix leading to saving of computation time and memory. Due to symmetric property, the left side-block scaling coefficients are just the transpose of the right-scaling blocks. Next, the near-field blocks are replaced by scaled near-field diagonal blocks. Now the scaled near-field blocks in combination with far-field and scaling coefficients are subjected to power series solution terminating after only two terms. As all the operations are performed on the near-field blocks, the complexity of scaling coefficient computation is retained as O(N)O⁢(N). The power series solution only involves the matrix-vector product of the far-field, scaling coefficients blocks, and inverse of scaled near-field blocks. Hence, the solution cost remains O(NlogN)O⁢(N⁢l⁢o⁢g⁢N). Several numerical results are presented to validate the efficiency and robustness of the proposed numerical method.
UAV system with trinocular vision for external obstacle detection of
transmission lines
Authors: Ma Yunpeng , Yu Zhihong , Zhou Yaqin , Li Qingwu , Wu Yi 
Published: March 2022

External obstacle detection is a significant task in transmission line inspection and
is related to the safe operation of the power transmission grid. In
recent years, unmanned aerial vehicles (UAVs) equipped with different
devices have been widely used for transmission line inspection.
However, because of the complex environment of transmission lines and
weak power line textures in the obtained images, most existing methods
and systems cannot meet the requirements for real-time and
high-accuracy external obstacle detection of transmission lines. In
this paper, a novel, to the best of our knowledge, UAV system
integrated trinocular vision technology with remote sensing is
developed to achieve better external obstacle detection of
transmission lines in real time, which is composed of a DJ-Innovations
(DJI) UAV equipped with a global positioning system (GPS), angle
sensors, trinocular vision including three visible cameras with the
same parameters, and a small processor with a pre-implanted software
algorithm. In this paper, a new method for external obstacle detection
of transmission lines is proposed to satisfy the requirements for
real-time and high-accuracy practical inspection applications. First,
the original trinocular images need to be rectified. Then, the
rectified trinocular images are adopted to achieve three-dimensional
reconstruction of power lines. Finally, based on trinocular vision,
bag of feature, and GPS, the clearance distance measurement, obstacle
classification, and obstacle location are realized. Experimental tests
on 220 kV transmission lines reveal that our proposed system can be
applied in practical inspection environments and has good
performance.
Perception of physicians towards electronic prescription system and associated factors at resource limited setting 2021: Cross sectional study
Authors: Hailiye Teferi Gizaw , Wonde Tewodros Eshete , Tadele Maru Meseret , Assaye Bayou Tilahun , Hordofa Zegeye Regasa , Ahmed Mohammedjud Hassen , Hailegebrael Samuel 
Published: March 2022

Introduction
The healthcare industry is increasingly concerned about medical errors, which are the leading cause of death worldwide and also compromise patient safety. This medical error is even more serious in developing countries where healthcare is not supported by technology. Because of the traditional paper-based prescription system, Ethiopia has an overall medication prescribing error rate of 58.07% that could be avoided if an electronic prescription system was in place. Therefore, this study aims to assess physicians’ perceptions towards electronic prescription implementation.

Methods
From February 1 to April 5, 2021, an institution-based cross-sectional study was conducted among physicians working in public hospitals in the Amhara region. 384 physicians were selected using a simple random sampling method. The data was collected using a self-administered questionnaire and analysed using SPSS, version 21. To assess factors associated with perception among physicians, a binary and multivariable logistic regression analysis were performed. A P.05 value, at a 95% confidence interval, was considered statistically significant. The validity of the questionnaire was determined based on expert opinion, as well as its reliability was determined by calculating the value of Cronbach alpha (α = .78).

Results
In this study, 231 (76.5%) of study participants had a positive perception of electronic prescription. Around 70.8% had more than 5 years of computer usage experience. Nearly 90% of participants claimed that their prescriptions were legible; however, 89% believe that paper-based prescriptions are prone to error. According to multivariable logistic regression analysis, technical skill [AOR] 4.7, 95% confidence interval [CI] (1.27–17.41), good internet access (AOR 2.82, % CI 1.75–4.54), and perceived usefulness of e-prescription system (AOR 3.31, 95% CI 1.01–12.12) were significantly associated with perception.

Conclusions
The majority of respondents have a positive perception of electronic prescription. The most notable factors associated with physician perception were organizational factors, internet access, perceived usefulness of the system, and technical skill.
Employment status and its associated factors for patients 12 months after intensive care: Secondary analysis of the SMAP-HoPe study
Authors: Unoki Takeshi , Kitayama Mio , Sakuramoto Hideaki , Ouchi Akira , Kuribara Tomoki , Yamaguchi Takako , Uemura Sakura , Fukuda Yuko , Haruna Junpei , Tsujimoto Takahiro , Hino Mayumi , Shiba Yuko , Nagao Takumi , Shirasaka Masako , Satoi Yosuke , Toyoshima Miki , Masuda Yoshiki ,   on behalf of the SMAP-HoPe Study Project
Published: March 2022

Background
Returning to work is a serious issue that affects patients who are discharged from the intensive care unit (ICU). This study aimed to clarify the employment status and the perceived household financial status of ICU patients 12 months following ICU discharge. Additionally, we evaluated whether there exists an association between depressive symptoms and subsequent unemployment status.

Methods
This study was a subgroup analysis of the published Survey of Multicenter Assessment with Postal questionnaire for Post-Intensive Care Syndrome for Home Living Patients (the SMAP-HoPe study) in Japan. Eligible patients were those who were employed before ICU admission, stayed in the ICU for at least three nights between October 2019 and July 2020, and lived at home for 12 months after discharge. We assessed the employment status, subjective cognitive functions, household financial status, Hospital Anxiety and Depression Scale, and EuroQOL-5 dimensions of physical function at 12 months following intensive care.

Results
This study included 328 patients, with a median age of 64 (interquartile range [IQR], 52–72) years. Of these, 79 (24%) were unemployed 12 months after ICU discharge. The number of patients who reported worsened financial status was significantly higher in the unemployed group (p<0.01) than in the employed group. Multivariable analysis showed that higher age (odds ratio [OR], 1.06; 95% confidence interval [CI], 1.03–1.08]) and greater severity of depressive symptoms (OR, 1.13 [95% CI, 1.05–1.23]) were independent factors for unemployment status at 12 months after ICU discharge.

Conclusions
We found that 24.1% of our patients who had been employed prior to ICU admission were subsequently unemployed following ICU discharge and that depressive symptoms were associated with unemployment status. The government and the local municipalities should provide medical and financial support to such patients. Additionally, community and workplace support for such patients are warranted.
Health status of street children and reasons for being forced to live on the streets in Harar, Eastern Ethiopia. Using mixed methods
Authors: Abate Degu , Eyeberu Addis , Adare Dechasa , Negash Belay , Alemu Addisu , Beshir Temam , Deressa Wayessa Alemayehu , Debella Adera , Bahiru Nebiyu , Heluf Helina , Abdurke Kure Mohammed , Abdu Ahmedmenewer , Oljira Dulo Amanuel , Bekele Habtamu , Bayu Kefelegn , Bogale Saron , Atnafe Genanaw , Assefa Tewodros , Belete Rabuma , Muzeyin Mohammed , Asmerom Haftu , Arkew Mesay , Mohammed Anumein , Asfaw Henock , Taddesse Barkot , Alemu Daniel , Yihun Dawit , Nigussie Shambel , Yusuf Kebira Jemal , Aliyi Adem Siraj , Dirirsa Gebisa , Hailu Saba , Godana Abduro , Mamo Galana , Bekele Deribe , Dessie Yadeta 
Published: March 2022

Introduction
In Ethiopia, more than four million children are anticipated to live under particularly difficult circumstances. Street children are subject to violence, a lack of health care, and a lack of education. Which denies them the right to live in a secure environment and exposes them to different health problems. Currently, little is known about the prevalence of Streetism, including health conditions. Therefore, this study was aimed to assess the health status of street children and determinants of Streetism.

Methods
Mixed methods (sequential) were employed from February 1 to 28, 2021. Quantitative cross-sectional study design and phenomenological qualitative designs were applied. Overall, 220 street children were involved in the study. The most common reason that forced the children to resort to a street way of life is to look for a job and quarreled with parents. The data were collected using interviews methods. Chi-square test and multiple binary logistic regression were applied to examine the variations among variables with the health status of street children. Qualitative data were analyzed using the thematic analysis technique.

Results
The study included a total of 220 street children. As to the quantitative study, the majority of study participants (92.73%) drank alcohol regularly. Depression (39.22%) and peer pressure (43.14%) were the most common initiation causes of drinking alcohol. According to a qualitative study report, "Street children are mostly affected by the communicable disease” and… They are addicted to substances like benzene” which had a profound effect on their health.” Furthermore, the study discovered a statistically significant association between respondents’ health status and sociodemographic characteristics (age and educational status), job presence, and drug use.

Conclusion
This study identified the factors that drove street children to live on the streets, such as the inability to find work and disagreements with their parents. The majority of the street children were affected by preventable and treatable diseases. Unfortunately, almost all street children reported drinking alcohol, which exposed them to a variety of health problems. In general, the study discovered that street children require immediate attention. Decision-makers and academicians should collaborate to develop a plan for these children’s health and social interventions.
Gut microbiome as a target organ in diagnosis and treatment of neuropsychiatric disorders and diseases (a literature review)
Authors: Minukhin V. V. , Knysh O. V. , Zhdamarova L. A. , Bolshakova H. M. , Voida Yu. V. 
Published: March 2022

The aim: analysis of literature data concerning the study on the relationship between changes in the composition, metabolic activity of the intestinal microbiota and the development of neuropsychiatric disorders and diseases.
Results. Despite the different etiopathogenesis and clinical manifestations, neuropsychiatric disorders and diseases share common pathogenetic links: intestinal dysbiosis with depletion of microbial diversity, an increase in the representation of “pro-inflammatory” taxa and changes in the metabolism of the intestinal microbiota; damage of the mucosal barrier and increased permeability of the intestinal wall; immune response activation with the development of systemic inflammation and neuroinflammation; impairment of the nervous, endocrine and metabolic mechanisms of signal transmission within the gut-brain axis. Specific changes in the composition and metabolic activity of the intestinal microbiota act as biomarkers or additional diagnostic criteria at some neuropsychiatric diseases. Therapeutic approaches aimed at correcting the composition and metabolic activity of the intestinal microbiota: fecal transplantation, the use of psychobiotics and neuroactive derivatives of probiotic bacteria demonstrate a positive effect.
Conclusions. The mechanisms of the specific microorganisms and their derivatives for influencing the functional activity of the central nervous system require further study. The gut microbiome should be considered as a target organ in the diagnosis and treatment of neuropsychiatric disorders and diseases. The microbiome-based approach contributes to early diagnosis and prediction of the clinical course severity. Targeting the correction of the intestinal microbiota composition and functional activity is a promising strategy for increasing the effectiveness of the neuropsychiatric pathology treatment.
Determination of the temporary disability duration in patientswith acute myocardial infarction depending on the body mass index
Authors: Koteliukh M. Yu. 
Published: March 2022

Prolonged temporary disability in patients with acute myocardial infarction (AMI) is more common in the presence of concomitant abnormalities. Adipokine C1q/TNF-related protein 3 (CTRP-3) is produced by adipose tissue and exhibits anti-inflammatory and cardioprotective properties. The course and prognosis of AMI depend on the presence of comorbid disorders and hence are objects of scientific interest.
Aim. To identify risk factors affecting the temporary disability duration in AMI patients depending on body mass index (BMI).
Materials and methods. The study involved 189 patients with ST-segment elevation AMI who were divided into 3 groups depending on BMI. The first group included 60 patients with AMI and normal BMI, the second group comprised 68 patients with AMI and excess body weight (EBW) and the third group was composed of 61 AMI patients with obesity. CTRP-3 was determined by enzyme-linked immunosorbent assay. Statistical data were processed using the licensed software package IBM SPPS Statistics (version 27.0). Significance of differences between normally distributed mean values of quantitative variables was assessed by ANOVA with Bonferroni correction for multiple comparisons. The logistic regression method was used to determine the period of temporary disability. The difference was considered significant at a P value ˂ 0.05.
Results. In analyzing the studied indicators, a significant decrease in the concentration of CTRP-3 was found in AMI patients with obesity on the first day compared to AMI patients with normal BMI (P < 0.001), which indicated the effect of obesity on the AMI development. The following indicators were determined to construct a model for predicting the duration of temporary disability, namely CTRP-3 on day 1, glucose on day 1, the presence of permanent atrial fibrillation, early complicationsof AMI.
Conclusions. The proposed method helped to determine the duration of temporary disability in patients with AMI depending on BMI, which would improve the provision of high-quality diagnostics and treatment of patients by reducing the economic costs of the length of hospital stay.
Classification of stressful factors associated with COVID-19 pandemic and quarantine among Ukrainian military personnel
Authors: Danilevska N. V. 
Published: March 2022

The COVID-19 pandemic and quarantine have caused psychological distress, which has led to mental and physical health problems and changes in the behavior patterns of many people. It is known that the cause of such stress in the civilian population is not a pandemic or quarantine in general, but only some of their components. However, although COVID-19 pandemic and quarantine can provoke health disorders also in military personnel, stressful factors directly triggering these disorders have not yet been identified.
Aim: to identify the immediate stressors that threaten Ukrainian military personnel health during the COVID-19 pandemic and quarantine.
Materials and methods. The study was conducted at the Zaporizhzhia Military Hospital and Zaporizhzhia State Medical University between March 2020 and May 2020. A total of 25 military personnel hospitalized during this period were examined. Clinical, psychopathological, psychological examinations was conducted. The Fear of COVID-19 Scale was also used.
Results. The stressful factors associated with the COVID-19 pandemic and quarantine, which had provoked health disorders in military personnel, have been identified and systematized into four groups: vital fears, social fears, domestic and organizational stress, abstract experiences. All these groups have been also described here.
Conclusions. Identification of psychogenic factors will help to determine targets for psychotherapy and reduce the negative effects of the COVID-19 pandemic and quarantine and prevent a decline in fighting capacity.
Marketing research of the domestic market of antibiotics and chemotherapeutic drugs for use in dermatology
Authors: Zarichna T. P. , Brytanova T. S. , Raikova T. S. 
Published: March 2022

The aim of work is marketing research of the domestic market of antibiotics and chemotherapeutic drugs for use in dermatology.
Materials and methods. To achieve this goal, electronic official sources of information and pharmacy websites were used. System-analytical, mathematical-statistical, and comparative methods of analysis were employed.
Results. Analysis of the assortment structure of the domestic market of antibiotics and chemotherapeutic drugs for use in dermatology allowed us to establish that in this segment there are original drugs (30.4 %) and generics (69.6 %), monopreparations (84.1 %) and combined (15.9 %) ones. Drugs of the studied group are represented by various dosage forms, among which soft dosage forms dominate (85.4 %). When studying the corporate structure of this market segment, it was found that 56.6 % of drugs come from abroad from 12 countries of the world and 21 pharmaceutical companies, the leader of which is the United Kingdom (dij = 0.0758). The study of the level of competition showed that the greatest competition is observed among the manufacturers of acyclovir and mupirocin generics (Kvi = 0.89). Calculation of the liquidity ratio, which exceeds 0.5, confirms incomplete availability of these medicines for the population of Ukraine.
Conclusions. A marketing study of the domestic market of antibiotics and chemotherapeutic drugs for use in dermatology was conducted. The assortment and corporate structures of this market segment are defined. The level of competitiveness of the pharmaceutical companies is analyzed, and the most successful ones are identified. The liquidity and solvency ratio was calculated, which allowed us to draw conclusions about the availability of these medicines for the population of Ukraine. In the future, in the healthcare system of Ukraine, an important direction should be outlined to improve the system of providing medical care to patients with dermatological diseases.
Development of a Multi-Station Creep Machine for Adhesive Joint Testing
Authors: Bezerra Gonçalo N. , Lopes António M. , da Silva Carlos M. S. Moreira , da Silva Lucas F. M. , Nunes Paulo D. P. , Marques Eduardo A. S. , Carbas Ricardo J. C. 
Published: March 2022

Abstract
Adhesive joints have unique advantages when compared to conventional mechanical joints. Adhesives can undergo creep deformation at room temperature (cold flow) as well as at low stress (well below the yield point of the material), which can lead to considerable reduction in the life expectancy of the bonded structures. Therefore, performing creep tests to determine a material’s expected behavior under certain operational or environmental conditions is of crucial importance. Available commercial creep machines are often designed to test a wide variety of materials and, thus, present suboptimal features for testing specimens with specific characteristics, as is the case of adhesive joints. In this article, a new multi-station creep test machine is proposed and its main subsystems are described, namely the mechanical structure, the pneumatic servo-controlled actuation, the data acquisition, and the command software. The machine is able to run tests at a constant load that can be set from 100 up to 2,800 N, at intervals of 5 N, and a maximum displacement of 250 mm. The three stations can accommodate single lap joints or bulk specimens and allow for totally independent and simultaneous tests, at temperatures ranging from −100°C up to 200°C. The measurement resolution for load and displacement is 0.025 N and 0.025 mm, respectively. Experimental results of creep tests are presented, and the multi-station creep machine behavior is validated by comparison to a reference equipment. The creep machine reveals good performance, with force and displacement repeatability below close to 6 N and 0.25 mm, respectively.