bluuebunny/crossref_metadata_2025 huggingface dataset:
Efficient Non-Odometry Method for Environment Mapping and Localisation of Mobile Robots
Authors: Adamowicz Mateusz , Ambroziak Leszek , Kondratiuk Mirosław
Published: July 2021

The paper presents the simple algorithm of simultaneous localisation and mapping (SLAM) without odometry information. The proposed algorithm is based only on scanning laser range finder. The theoretical foundations of the proposed method are presented. The most important element of the work is the experimental research. The research underlying the paper encompasses several tests, which were carried out to build the environment map to be navigated by the mobile robot in conjunction with the trajectory planning algorithm and obstacle avoidance.
Near-Resonant Regimes of a Moving Load on a Pre-Stressed Incompressible Elastic Half-Space
Authors: Kudaibergenov Askar , Kudaibergenov Askat , Prikazchikov Danila
Published: July 2021

The article is concerned with the analysis of the problem for a concentrated line load moving at a constant speed along the surface of a pre-stressed, incompressible, isotropic elastic half-space, within the framework of the plane-strain assumption. The focus is on the near-critical regimes, when the speed of the load is close to that of the surface wave. Both steady-state and transient regimes are considered. Implementation of the hyperbolic–elliptic asymptotic formulation for the surface wave field allows explicit approximate solution for displacement components expressed in terms of the elementary functions, highlighting the resonant nature of the surface wave. Numerical illustrations of the solutions are presented for several material models.
Certain partitions on a set and their applications to different classes of graded algebras
Authors: Calderón Martín Antonio J. , Dieme Boubacar
Published: July 2021

Let (𝔘, ɛu
) and (𝔅, ɛb
) be two pointed sets. Given a family of three maps ℱ = {f
1 : 𝔘 → 𝔘; f
2 : 𝔘 × 𝔘 → 𝔘; f
3 : 𝔘 × 𝔘 → 𝔅}, this family provides an adequate decomposition of 𝔘 \ {ɛu
} as the orthogonal disjoint union of well-described ℱ-invariant subsets. This decomposition is applied to the structure theory of graded involutive algebras, graded quadratic algebras and graded weak H
*-algebras.
A generalisation of Amitsur’s A-polynomials
Authors: Owen Adam , Pumplün Susanne
Published: July 2021

We find examples of polynomials f ∈ D [t; σ, δ] whose eigenring ℰ(f) is a central simple algebra over the field F = C ∩ Fix(σ) ∩ Const(δ).
Simulation of the optical erbium doped fiber amplification for performance analysis
Authors: Róka Rastislav
Published: July 2021

In this contribution, innovations in the simulation of the optical transmission path are presented specifically, the dynamic performance analysis of erbium doped fiber amplifier (EDFA) properties for system applications is focused. Our EDFA simulation model is based on population equations of ions that can describe mutual relations between three states of ions in the EDFA amplifier. The presented numerical approach includes a signal gain and noise contributions to the single input channel amplification using the steady state modelling coming out of a dynamic model. The EDFA model in the steady state can be consequently applied for a purpose of advanced si mulations performed in the complete optical transmission path.
Blind audio source separation based on a new system model and the Savitzky-Golay filter
Authors: Xu Pengfei , Jia Yinjie , Jiang Mingxin
Published: July 2021

Blind source separation (BSS) is a research hotspot in the field of signal processing. This scheme is widely applied to separate a group of source signals from a given set of observations or mixed signals. In the present study, the Savitzky-Golay filter is applied to smooth the mixed signals, adopt a simplified cost function based on the signal to noise ratio (SNR) and obtain the demixing matrix accordingly. To this end, the generalized eigenvalue problem is solved without conventional iterative methods. It is founded that the proposed algorithm has a simple structure and can be easily implemented in diverse problems. The obtained results demonstrate the good performance of the proposed model for separating audio signals in cases with high signal to noise ratios.
General population perceptions of risk in the Covid-19 pandemic: A Romanian case study
Authors: Popescu Liliana , Vîlcea Cristiana
Published: July 2021

The COVID-19 pandemic has created complex socio-political situations, as the health crisis was paralleled by the reshaping of lifestyle patterns and induced severe economic changes. By means of an online survey, this study aims to investigate the population perceptions of risk in Romania: it examines important psychological and social factors related to risk perception and behaviours, as well as attitudes toward quarantine and physical distancing. By means of statistical analysis, the data were analysed and a GIS environment was used to visualise data distributions. Our findings indicate that if the perceived risk associated to the epidemic is high, people will change their normal behaviours, adopt preventative measures, adhere to strict hygiene practices and are willing to self-isolate for the benefit of their peers, which they tend to see as running a greater risk than themselves. Women and people with higher educational status tend to be more worried about the current situation, but regarding the severity, almost all men believe they would risk a severe state if infected. In conclusion, the perception of high risk associated with COVID-19 can lead not only to positive behavioural changes (mainly physical distancing and improved hygiene), but also to a rapid mobilisation and active involvement of communities, which are vital for stopping transmission of the virus.
Suburbanisation processes within and outside the city: The development of intra-urban suburbs in Wrocław, Poland
Authors: Szmytkie Robert
Published: July 2021

The scale and the specificity of intra-urban suburbanisation is subject to evaluation in this article, based on a case study of Wrocław city (SW Poland), using data on population changes at an intra-urban scale and on the level of construction activity in the city. Intra-urban suburbanisation is characterised by intensive construction activity and population growth in the peripheral districts of the city, while depopulation takes place in the central part of the city and in large panel block estates from the socialist period. The main factors for the development of intra-urban suburbanisation are a reaction to the unfavourable (from the perspective of the city) suburbanisation processes (outflow of residents and tax revenue, road traffic congestion and the necessity to service populations residing de facto outside the city). The existence of extensive non-urbanised areas within the larger cities of Central and Eastern Europe (identified as potential areas for investment) results from the specific nature of their territorial development in the 20th century, including incorporation processes connected with planned urbanisation.
Monitoring and Forecasting of Surface Deformation at Victoria and Cantacuzino Mines
Authors: Onica Ilie , Marian Dacian-Paul , Marina Ovidiu
Published: July 2021

The underground mining of the rock salt deposit from Slănic started in 1665, with the Old Mines and continued in 1970, with Victoria Mine, then in 1993, with Cantacuzino Mine. The mining method applied at Victoria and Cantacuzino mines was the one with small rooms and square pillars, with which over 9.7 million m3 of rock salt were extracted. This very large volume of underground mining voids led to the convergence of the underground excavations and thus to the deformation of the surface. This article presents the analysis of the measurements of surface displacement and the prediction of its subsidence over time. Also, the main factors that contributed to the deformation of the surface are analyzed, namely: the dimensions of the underground voids, the mining depth, the geomechanical characteristics, the tectonics and microtectonics of the deposit, the hydrogeology and the effect of blasting.
Environmental Impact Assessment Related by Energy Sector in Rovinari Mining Area
Authors: Gurică Crina-Adriana , Georgescu Mircea
Published: July 2021

In this article an impact assessment is carried out, generated by activities in the energy sector related to Rovinari mining area. Energy-related activities in this area are carried out by open pit mining activities in the context of Tismana, Roșia, Pinoasa, Peşteana and Rovinari locations and Rovinari thermal power plant. Some information that has formed the input for the author’s approach has been provided by SC. Complexul Energetic Oltenia SA (CEO) and S.C. Institute of Scientific Research, Technological Engineering and Mine Designs on Lignite S.A. Craiova (ICSITPML) which has been processed, analysed and used for the presented environmental impact assessment. Two methods from specialized studies have been used for the impact assessment, namely: the Matrix Method for Rapid Impact Assessment (MERI) and the Method for Integrated Quantitative Impact and Risk Assessment of Environmental Pollution (EIRM). Based on the analysis carried out, it can be concluded that the activity in this sector does not lead to significant negative effects strictly associated with it.
The Impact of Exploiting Lignite in Lupoaia Open Pit on Environmental Water
Authors: Iladie Corina Maria
Published: July 2021

The impact of extracting lignite in Lupoaia open pit over waters is local and regional, and temporary. The hydrographic network in Lupoaia open pit depends on River Motru, with its afluents, Ploștina and Lupoița Valley Rivers. The aquifers are to be found in the coal layers V-XII, mainly of sands formation. The impact over water in Lupoaia consists of water pollution and of changes in both the quality and the quantity of ground and surface waters. The surface waters are polluted resulting in industrial wastewaters, household wastewaters and waste rainwater. The wastewater is polluted within maximum admitted limits. The quality of groundwaters is influenced and modified by extracting coal resulting in the extinction of some aquifers. Environmental risks that can occur when extracting lignite are water floods, landslides, disasters which can be prevented by building guard channels around the open pit. The actions for reducing the impact are, in general, accomplished through monitoring both the water pollutants and the morphological changes caused by extracting lignite. That is why wastewater treatment plants must function. The impact of the activity in Lupoaia open pit over the hydrographic net of the area is to be observed during the entire extracting period, and monitoring this activity is highly demanded by the European environmental protection laws.
The Share Distribution and Precision Evaluation in Underground Topographic Routes and Networks
Authors: Filip Larisa Ofelia , Cucăilă Simona
Published: July 2021

The underground topographic works of elevating and drawing are necessary for the execution of underground works (mining, hydrotechnics, communications, etc.) Fulfilling these works efficiently and safely requires an advance study for the precisions in topographic support routes and networks. This paper aims to establish the share distribution correlated with the underground works distribution.
Investigation of the effects on ink colour of lacquer coating applied to the printed substrate in the electrophotographic printing system
Authors: Sönmez Sinan , Arslan Serra
Published: July 2021

In this study, the effects of the lacquer applied to the printing materials which were printed by electrophotographic printing method on printing quality were investigated. In practice, printing materials with the same weight and different optical properties were used and the study was carried out in three stages. The optical and physical properties of the printing materials used in the first part were determined, in the second part, the printing of these materials by electrophotographic printing method and printability tests were performed. In the third chapter, matte and glossy lacquers were applied to these printed materials and printability tests were repeated. As a result of the study, it was observed that the application of gloss and matte lacquer caused a decrease in the printing density values and also the application of matte lacquer caused a decrease in the gloss values.
Fe-modified activated carbon obtained from biomass as a catalyst for α-pinene autoxidation
Authors: Kamińska Adrianna , Maciejewska Nikola , Miądlicki Piotr , Kiełbasa Karolina , Sreńscek-Nazzal Joanna , Michalkiewicz Beata
Published: July 2021

The presented work describes the autoxidation of alpha-pinene for the first time using a catalyst based on activated carbon from biomass with introduced Fe. The raw material for the preparation of the carbon material was waste orange peel, which was activated with a KOH solution. The following instrumental methods characterized the obtained catalyst (Fe/O_AC):N2 adsorption at 77 K, XRD, UV, SEM, TEM, X-ray microanalysis, and catalytic studies. It was shown that the Fe/O_AC catalyst was very active in the autoxidation of alpha-pinene. The main reaction products were: alpha-pinene oxide, verbenone, verbenol, and campholenic aldehyde.
Physical Activity and Parameters of Body Posture in the Frontal Plane in Children
Authors: Labecka Marta Kinga
Published: July 2021

Introduction

Physical activity may have an impact on the parameters of body posture. Scientific reports suggest that levels of physical activity are declining among society, which may result in incorrect changes in body posture. This study aimed to assess the relationship between physical activity and the parameters characterizing posture in the frontal plane in children.

Material and Methods

Sixty-seven primary school students aged 9 were enrolled in the study, including 29 girls and 38 boys. The posture was evaluated with the photogrammetric method. Also, anthropometric measures and the level of physical activity were investigated.

Results

The highest percentage of examined children was characterized by a moderate level of physical activity. Children with a high level of physical activity were characterized by the greater asymmetry of position between the right and left shoulder as compared to those with a low and a moderate level of physical activity.

Conclusions

There were statistically significant differences only in the height of shoulders in children with a high level of physical activity. This study should be repeated in adolescence, characterized by changes in development and a reluctance to physical activity.
Directions for Ensuring the Equivalence of Exchange in Agri-Food Chains in Ukraine
Authors: Varchenko Olha.O.
Published: July 2021

The article examines the issues of intersectoral price relations in agri-food chains in Ukraine. It is proved that the imbalance of relations between different spheres of the agro-industrial complex due to price disparity causes the withdrawal of financial resources from one industry to another, without creating conditions for expanded reproduction. The factors influencing prices in agri-food chains are systematized: inflation, disparity, currency fluctuations, sales channels, etc. It is confirmed that the subjects of entrepreneurial activity of the agricultural sector of economy operated in conditions of price disparity during 2000–2019, which led to a relatively low value of their profitability. At the level of a participant in the chain of food industry entities, the price index for food industry products has been exceeded over the agricultural level, but there is a very low level of profitability – 1.4% in 2019. Analytically proved existence of a disparity between retail prices for food and agricultural products provides a profitability of wholesale and retail trade at 15.8–23.3%. Violation of the equivalence of exchange in supply chains at the level of wholesale and retail trade leads to the entry of agricultural enterprises into vertically integrated associations of the holding type. It is substantiated that ensuring the equivalence of exchange in agri-food chains requires the introduction of a set of value-added tools in the agricultural sector of antitrust regulation, market infrastructure development, rural cooperation and integration, and support for the development of small producers.
Interregional relations in the governance system of the subsidized region of Siberia
Authors: MONGUSH Snezhana P.
Published: July 2021

Subject. This article discusses the issues related to reducing the disparity of regions in terms of socio-economic development.
Objectives. The article aims to consider and assess the interregional relations in the governance system of the subsidized region of Siberia.
Methods. For the study, I used a statistical analysis.
Results. Based on an analysis of different approaches to the development of interregional integration processes, the article proposes various forms of cooperation between regions in different spheres of activities.
Conclusions. The main reason for the tenuous interregional relationship in the regional governance system is the lack of economic, institutional, and legal measures to ensure integration. The development of external integration with neighboring regions can contribute to the social and economic advancement of the subsidized region in terms of strategic perspective.
Improving the efficiency of oil refineries by developing the production of high-quality oils
Authors: BUN'KOVSKII Dmitrii V.
Published: July 2021

Subject. This article discusses the efficiency of Russian oil refining complexes at the present stage of the oil industry's development.
Objectives. The article aims to consider reserves to improve the efficiency of petroleum oil production in Russia and describe some aspects of the domestic oil refining complexes' efficiency improvement.
Methods. For the study, I used the systems analysis, observation, comparison, generalization, and the method of hypothetico-deductive reasoning.
Results. Based on an analysis of the main advantages and disadvantages of alternative ways of producing high-quality petroleum oils, the article describes the possibilities and ways of modernizing the petroleum oil production.
Conclusions. The considered ways of modernizing the production of petroleum oils will help improve the economic efficiency of Russian oil refineries through reducing the technological equipment operating costs and adding to the oil refining depth.
Developing a regional milk processing market: A competitive aspect
Authors: ANDREEV Andrei V.
Published: July 2021

Subject. This article examines the impact of competition in the dairy industry on the formation of the regional milk processing market structure.
Objectives. The article aims to analyze the risks and threats to the economic security of the region arising from the creation of competitive advantages by different types of dairy enterprises. The Saratov Oblast is considered as a case study.
Methods. For the study, the neoclassical Structure–Conduct–Performance (SCP) paradigm is used, which is explained through the market positioning theory, resource-based view (RBV), and the transaction approach.
Results. The article notes that a moderately concentrated structure of the milk processing market has been formed in the Saratov Oblast. There are two leading enterprises that are able to influence not only the less strong local processing factories and producers of raw milk, but also the Oblast's economic security.
Conclusions. Leading dairy companies of the region, following industry leaders, are seeking to expand their competitive position in inter-regional markets. The needs of processors in raw milk constantly exceed the production capacity of dairy farming, and market power enables them to displace local processors from the market and contributes to the reduction of the number of market participants in the dairy industry. The consequences of these actions go beyond antitrust policy and relate to the broader regulation of agri-food markets.
Fixed investment: Trend assessment
Authors: SHALAEVА Lyudmila V. , SHALAEVА Ekaterina V.
Published: July 2021

Subject. This article considers investment in fixed assets as an economic growth factor.
Objectives. The article aims to identify trends in the field of investment in fixed assets in the Perm Krai, Volga Federal District, and the Russian Federation.
Methods. For the study, we used the methods of analysis, synthesis, comparison, and generalization.
Results. The article presents the changes in and patterns of fixed investment for 2015–2019, and it assesses the level of fixed investment in the Russian Federation, Volga Federal District, and the Perm Krai.
Relevance. The results of the study can be used to improve the effectiveness of management decisions on fixed capital investment.
Using time series to assess a valuable end product creation in the tertiary industry – The sports sector case study: A regional aspect
Authors: ARKALOV Dmitrii P.
Published: July 2021

Subject. This article analyzes the sports parameters necessary to create a valuable end product.
Objectives. Based on the comprehensive analysis, the article aims to evaluate key indicators associated with a sports valuable end product creation.
Methods. For the study, I used a statistical analysis.
Results. Based on the comprehensive analysis of the input data on financing, number of athletes, and the purchasing power, using time series, the article presents equations which can help make predictions and use them in further planning. The article also shows the average cost of creating one unit of valuable end product by year for the period 2010–2019.
Conclusions. Positive dynamics indicate that the number of athletes in national sports teams (valuable end products) is increasing. However, their number is still insufficient.
Myths and Realities about CBD as Medicine
Authors:   The George Washington University School Of Medicine And Health Sciences, JH Khalsa
Published: July 2021

The two cannabinoids from the plant Cannabis sativa, Linn., Cannabidiol (CBD) and delta-9 Tetrahydrocannabinol (THC) have been extensively studied for their pharmacologic activities and therapeutic potential.
The Use of Substances at an Early Age: A Qualitative Study among Young Men Living with Substance Use Disorders in Punjab, India
Authors:   University Of South-Eastern Norway, Kour Prabhjot
Published: July 2021

Substance Use Disorders (SUDs) among young people are a major health problem. The magnitude of the problem is increasing in India, especially in Punjab, where the menace of SUDs is debilitating the physical and mental welfare of young people.
Housing Models Promoting Aging in Community-A Brief Report on Key Lessons Learned
Authors:   University Of Central Florida, Hou Su-I
Published: July 2021

The majority of older adults prefer aging in their own homes or communities. Four promising housing models promoting Aging-In-Community (AIC), including the village, Naturally Occurring Retirement Community (NORC), senior cohousing, and University-Based Retirement Community (UBRC) were reviewed.
Ageing and Pre-Hospital Care: Opportunities for Rural Communities
Authors:   Monash University, TE McManamny
Published: July 2021

There is a stark contrast between the health outcomes of older rural-dwelling people in comparison to their urban counterparts.
Perception about Clinical Posting among B.Sc. Nursing Students: A Comparative study
Authors:   Department Of Nursing, RR College Of Nursing, Haryana, India, Jyoti G
Published: July 2021

The increasing number of clinical posting, students mind mend towards their clinical learning environment. A student perceives their clinical posting positively as they progress from one year to other year.
Outcomes of Integrating Smart Phrase Interface Technology to Improve Cancer Symptom Management
Authors:   College Of Nursing, University Of Rhode Island, United States, Dufault M
Published: July 2021

ssessing cancer treatment-related symptoms is challenging for frontline telephone-triage nurses toggling multiple electronic health record (EHR) screens for information on toxicity-risk predictors while simultaneously providing over-the-phone emotional support. Decision-support tools embedded into computer-telephone interface software, called smart phrases, are not widely used nor empirically evaluated for usability and remote symptom management impact.
Experiences of People Keeping a Three Good Things Daily
Authors:   Department Of Nursing, The Jikei University School Of Nursing, Japan, Yamashita M
Published: July 2021

The Three Good Things Daily is considered an approach using positive psychology to enhance human happiness. For this study, we conducted an interview survey of seven people to clarify their experiences of using the Three Good Things Daily
Integrating Nursing with Biomedical Engineering: A Multidisciplinary Integrative Innovative Approach to Home-Base Care for Aging Society in Thailand
Authors:   Faculty Of Nursing, Thailand, Mamom Jinpitcha
Published: July 2021

A new innovation which integrates a multidisciplinary knowledge base of health care and the engineering and architectural sciences will provide an alternative approach to lessening the burdens being borne by relatives administering the care. It will also assist the management and prevention of future PUs in the society of the elderly that are imminent
The Effectiveness of a Mobile Nutrition Application to Promote the Nutritional Status and Wound Healing Rate in Patients with Pressure Ulcers Receiving Long-Term Care in Thailand
Authors:   Faculty Of Nursing, Thailand, Mamom Jinpitcha
Published: July 2021

This innovative developmental research study aims to determine the effects of a mobile nutrition application on the nutritional status and wound healing of 72 immobilized patients in long-term care in Thailand. The patients were randomized into two groups, a control group receiving conventional care and an experimental group using the mobile nutrition application
Evaluación del potencial de generación de biogás de un biodigestor de excremento vía simulación con el software SIMBA®
Authors: Lozano Ruíz Angie Carolina , Sánchez Montealegre Cristian Arled , Ardila Marín Juan Gonzalo
Published: July 2021

Las energías renovables permiten minimizar las emisiones de gases contaminantes generados por combustibles fósiles convencionales. Un biodigestor genera biogás y fertilizantes sin patógenos mediante la fermentación de biomasa. “Mi Granjita Huevos el Dorado” es una finca productora de huevos ubicada en zona rural de Neiva, con 1325 gallinas ponedoras cuyo excremento no se dispone adecuadamente, contaminando: el suelo por su uso como abono sin eliminación de microorganismos patógenos, disminuyendo la capacidad de drenaje y dificultando la mineralización del oxígeno; el agua con lixiviados de nitratos, y el aire con amoníaco y malos olores y posterior propagación de insectos, afectando la salud de la población y generando gasto en recolección/tratamiento. El presente proyecto evaluó el potencial de generación de biogás de un biodigestor utilizando como combustible la gallinaza de la finca, como primer paso se caracterizó la mezcla de biomasa y agua, para esto se recolectó el excremento producido durante seis meses por las gallinas y un cerdo en engorde, que funcionarían como sustrato acelerador de la digestión anaeróbica, se obtuvieron 33.46 kg/día, luego se midió el pH de diferentes proporciones entre gallinaza, porcinaza y agua para definir el porcentaje de mezcla con el que se abastecería al biodigestor, siendo la de 40% biomasa y 60% agua, la más idónea. Se dimensionó el biodigestor llegando al presupuesto de su fabricación e instalación, y se simuló mediante el software SIMBA#biogas®, encontrando una producción esperada de 10 m3/mes de biogás, basado en la carga orgánica, una temperatura de 35°C, apropiada para el crecimiento y desarrollo de las bacterias, y un tiempo de retención de 30 días, concluyendo que la producción de biogás puede suplir un 50% del gas natural utilizado en la finca, generando una recuperación de la inversión en un periodo de tres años.
Sağlık sektöründe kurumsal sosyal sorumluluk: Sistematik bir derleme çalışması.
Authors: KOCA Gülsüm Şeyma , UĞURLUOĞLU Özgür
Published: July 2021

Günümüzde işletmeler, çeşitli sosyal, çevresel ve ekonomik baskılarla bağlantılı olarak Kurumsal Sosyal Sorumluluk (KSS) projelerini destekleme sorumluluğunu taşımaktadırlar. İşletmelerin sağlık, sosyal ve çevre problemlerini analiz etme, paydaş taleplerini karşılama, diğer aktörler ile toplumsal problemlerin çözümüne katkıda bulunma yükümlülükleri bulunmaktadır. Son yıllarda tüm sektörlerde önemli bir rol oynayan KSS kavramı, sağlık sektöründe de yaygın bir kullanım alanı bulmuştur. Bu bağlamda, bu çalışmanın amacı, sağlık sektöründe KSS faaliyetlerini sistematik derleme yaklaşımıyla analiz etmektir. Bu amaçla, araştırma kapsamında 30 makale incelenmiştir. Araştırma sonucunda, KSS’ye ilişkin yürütülen çalışmaların en fazla kamu ve özel hastanelerde yapıldığı, daha sonra ise sırasıyla sağlık merkezleri, ilaç şirketleri, hane halkı ve öğrenciler üzerinde yürütüldüğü tespit edilmiştir. KSS’nin, başta hastalar olmak üzere dış paydaşlara yönelik faaliyetlere katılım, hastaneye olumlu finansal sonuç sağlama, çevreye olumlu imaj yaratma, yasalara saygı gösterme, işyerinde güvenli ve dostça çalışma ortamı oluşturma, çevreye duyarlılık ve güçlü pazarlık pozisyonu sağlama gibi avantajlarının olduğu bu çalışmada elde edilen sonuçlardandır. Bu çalışmadan edinilen sonuçların, belirsizliğin yüksek olduğu sağlık sektöründe, kuruluşların KSS faaliyetlerini rekabetçi bir avantaj olarak nasıl kullanılabileceği ile ilgili bilgiler sunması nedeniyle önem taşıdığı düşünülmektedir.
Pandemi döneminde uzaktan eğitim memnuniyetini etkileyen faktörler
Authors: TÜZÜN Furkan , YÖRÜK TORAMAN Nilay
Published: July 2021

Bu makalenin amacı pandemi döneminde üniversite öğrencilerinin uzaktan eğitim memnuniyetlerini etkilemesi muhtemel faktörleri keşfetmek ve bulgular doğrultusunda yükseköğretim kurumlarına uzaktan eğitimle ilgili öneriler sunmaktır. Çalışmada, Ankara Sosyal Bilimler Üniversitesi (ASBÜ) öğrencileri ile 22 Mayıs-6 Haziran tarihleri arasında yapılmış olan anket verileri kullanılmıştır. Genel olarak katılımcıların uzaktan eğitimden memnun olmadıkları ve baskın bir çoğunluğunun yüz yüze eğitimi farklı eğitim çıktıları yönünden uzaktan eğitime tercih ettikleri gösterilmiştir. Uzaktan eğitim konusundaki üniversite öğrencilerinin sahip olduğu negatif tutumun çeşitli fiziki, üniversite kaynaklı, psikolojik ve demografik faktörlerden kaynaklandığı gösterilmiştir. Fiziki faktörler (i) öğrencilerin elektronik cihaz ve (ii)İnternet erişimini kapsarken, üniversiteden kaynaklı faktörler (i) kurumsal iletişim yeterliliği, (ii) eğitime ayrılan süre, (iii) senkron/asenkron ders metodu uygulamaları ve (iv) online sınav uygulamalarından kaynaklı not adaletsizliği algısı olarak ortaya çıkmıştır. Psikolojik faktörler ise, (i)hastalık teşhisi ve hastalığa yakalanma riski, (ii) karantina uygulamaları sonucu artan hane halkı sayısı ve eviçi anlaşmazlıklar, (iii) uyku problemi ve gıda sıkıntısı endişesi olarak sıralanmıştır. Her bir faktörle ilgili bulgularveri görselleştirmesi ile betimleyici bir şekilde sunulmuştur. Bulgular doğrultusunda yükseköğretim ve ilgili kamukurumlarına yönelik politika önerileri getirilmiştir.
Jeopolitik riskin ekonomik büyüme üzerindeki etkisi: Kırılgan Beşli ülkelerinden ampirik kanıtlar
Authors: DOĞAN Emrah , ÖZARSLAN DOĞAN Başak
Published: July 2021

Ülkeler arasında meydana gelen büyüme farklılıklarının sahip olunan nitelikli işgücü, teknoloji düzeyi, doğal kaynaklar, siyasi ve coğrafi etkenlerin yanı sıra risk düzeyi gibi birçok sebebi vardır. Bu kapsamda çalışmada Kırılgan Beşli Ülkeler için jeopolitik riskin ekonomik büyüme üzerindeki etkisi ampirik olarak incelenmiştir. Çalışma, 1985-2017 dönemi kırılgan beşli ülkeleri içeren panel veri seti yardımıyla ve Genişletilmiş Ortalama Grup (Augmented Mean Group) Tahmincisi yöntemi kullanılarak analiz edilmiştir. Çalışmada jeopolitik riskin ekonomik büyüme üzerindeki etkilerini belirleyebilmek için, kişi başına Reel GSYİH ile jeopolitik risk endeksi, sabit sermaye yatırımları ve işgücü arasındaki ilişki tahmin edilmiştir. Elde edilen ampirik sonuçlara göre, kırılgan beşli ülkelerinde jeopolitik riskin ekonomik büyüme üzerindeki etkisi negatif ve istatistiki olarak anlamlı olarak bulunmuştur. Öte yandan işgücü ve sabit sermaye yatırımlarının ekonomik büyüme üzerindeki etkisi ise pozitif ve istatistiki anlamlı olarak gözlenmiştir.
Pregnant with COVID-19 and Rubella: Impact in the Maternal and Newborn Health
Authors:   Department of Parasitology, Microbiology and Immunology, Federal University of Juiz de Fora, Juiz de Fora, Brazil, VC Dias , VL Silva ,   Department of Parasitology, Microbiology and Immunology, Federal University of Juiz de Fora, Juiz de Fora, Brazil, CG Diniz ,   Department of Parasitology, Microbiology and Immunology, Federal University of Juiz de Fora, Juiz de Fora, Brazil, AB Ferreira-Machado ,   Department of Parasitology, Microbiology and Immunology, Federal University of Juiz de Fora, Juiz de Fora, Brazil, VQA Bastos ,   Cortes Villela Clinical Laboratory, Juiz de Fora, Brazil, RV Bastos ,   Cortes Villela Clinical Laboratory, Juiz de Fora, Brazil, LQA Bastos ,   Department of Pathology, Federal University of Juiz de Fora, Juiz de Fora, Brazil, AN Bastos ,   Department of Morphology, Federal University of Juiz de Fora, Juiz de Fora, Brazil
Published: July 2021

Since December 2019, COVID-19 has become major global public health problem. The understanding of SARS-CoV-2, especially the effect on pregnant women and neonates, is still not fully elucidated. This report case describes a pregnant with COVID-19 and rubella. SARS-CoV-2 nucleic acid was not detected in the neonate just after birth, indicating that there was not vertical transmission. Although anti-SARS-CoV-2 Immunoglobulin G (IgG) antibody and anti-Rubella Virus IgG antibody were detected in the newborn serum, anti-SARS-CoV-2 (Immunoglobulin M) IgM and anti-Rubella Virus IgM were not detected. The observations may suggest transplacental transmission of coronavirus and rubella antibodies, ensuring immediate immunity against these pathogens to newborn.
Electrochemical Biosensors for COVID-19
Authors:   Innovation Center, Part Lastic Center of Applied Science and Technology, Mashhad, Iran, E Sheikhzadeh
Published: July 2021

Today COVID-19 pandemic caused by the SARS-CoV-2 virus is the most challenging health issue due to the fast transmission rate and its impact on different aspects of human life. Although RT-PCR is the primary method to detect SARS-CoV-2, other reliable methods are being developed to detect this pathogen. Biosensors can provide fast, reliable, and point-of-care diagnostic. Among them, electrochemical biosensors attract considerable interest. In this mini-review, I will summarize few electrochemical biosensors which have been developed to detect the SARS-CoV-2 virus.
Dysproteinemia-Associated Kidney Diseases: Clinicopathological Correlations
Authors:   Department of Nephrology, Hospital Curry Cabral, Centro Hospitalar Universitário Lisboa Central, Lisboa, Portugal, MM Menezes , H Sousa ,   Department of Nephrology, Hospital Curry Cabral, Centro Hospitalar Universitário Lisboa Central, Lisboa, Portugal, M Góis ,   Department of Nephrology, Hospital Curry Cabral, Centro Hospitalar Universitário Lisboa Central, Lisboa, Portugal, F Nolasco ,   Department of Nephrology, Hospital Curry Cabral, Centro Hospitalar Universitário Lisboa Central, Lisboa, Portugal, LL Costa ,   Department of Nephrology, Centro Hospitalar Tondela- Viseu, Viseu, Portugal, E Soares ,   Department of Nephrology, Centro Hospitalar de Setúbal, Setúbal, Portugal
Published: July 2021

Introduction: Dysproteinemia-associated kidney diseases can have diverse clinical and histological presentation but not all patients with monoclonal gammopathy have Monoclonal Gammopathy of Renal Significance (MGRS) and some have other causes for kidney lesions. Therefore, kidney biopsy is essential to make this diagnosis. We made a retrospective study, which aimed to: 1. Identify dysproteinemiaassociated kidney lesions; 2. Establish clinicopathological correlations of patients with those lesions and 3. Identify kidney and patient survival predictors. Methods: A retrospective, observational chart review of kidney biopsies performed, between January 2015 and February 2020, in three Portuguese Hospitals, to a total of 39 patients, with kidney lesions associated with monoclonal gammopathy, was undertaken. Results: The three main dysproteinemic kidney diseases identified were cast nephropathy, AL amyloidosis and Monoclonal Immunoglobulin Deposition Disease (MIDD), with different features among them. Only three patients fulfilled the criteria to Monoclonal Gammopathy of Renal Significance (MGRS). In regard to treatment, we verified that most of our patients were treated with chemotherapy. Unfortunately, only four recovered, either partially or completely. The mean kidney survival since kidney biopsy was 29,23 months and the mean patient survival since diagnosis was 24,46 months. Some clinical and pathologic features correlated to lowerkidney survival: acute tubular necrosis, cast nephropathy, Thrombotic Microangiopathy (TMA), haemoglobin and estimated Glomerular Filtration Rate (eGFR). Previous Nephrology follow-up correlated with higher kidney survival. Only eGFR was associated with lowerpatient survival.
Foramen Magnum Stenosis in Achondroplasia
Authors:   Children’s Hospital, Radiology Department, Mohamed V University, Rabat, Morocco, S Choayb , H Adil ,   Children’s Hospital, Radiology Department, Mohamed V University, Rabat, Morocco, S El Haddad ,   Children’s Hospital, Radiology Department, Mohamed V University, Rabat, Morocco
Published: July 2021

Achondroplasia is the most common hereditary skeletal dysplasia and is characterized by disproportionately short stature with rhizomelic short extremities [1]. The skull features include a narrowed foramen magnum, short skull base, and clivus [2]. Foramen magnum stenosis is a characteristic funding, secondary to an abnormal placement and premature fusion of the posterior synchondroses [1]. The second factor responsible for stenosis is a defect in endochondral ossification in the basiocciput that may result in an extension of the squamous occipital bone [2]. It can cause hydrocephalus and prominent emissary and meningeal veins (Figure 1). Figure 1: Sagittal T1WI revealing a narrowed stenosis of the foramen magnum and compression of the cervicomedullary junction. The most severe complication is the compression of the cervicomedullary junction, associated with severe morbidity and sudden death in younger children [1].
Conservative Management of Persistent Pupillary Membranes in Young Adult
Authors:   Department of Ophthalmology, Military Instruction Hospital Mohammed V, Rabat, Morocco, N Khanaouchi , T Abdellaoui ,   Department of Ophthalmology, Military Instruction Hospital Mohammed V, Rabat, Morocco, M bougguar ,   Department of Ophthalmology, Military Instruction Hospital Mohammed V, Rabat, Morocco, Y Mouzarii ,   Department of Ophthalmology, Military Instruction Hospital Mohammed V, Rabat, Morocco, K Reda ,   Department of Ophthalmology, Military Instruction Hospital Mohammed V, Rabat, Morocco, A Oubaaz ,   Department of Ophthalmology, Military Instruction Hospital Mohammed V, Rabat, Morocco
Published: July 2021

Pupillary membranes are mostly encountered in infant. They present the remnants of anterior tonica vasculosa lentis which nourishes the lens during fetal life, their regression generally begins from the sixth month of gestation. However in some cases they may persist and cause a visual impairment .the management of PPM depends on the size of pupillary aperture, the extent of the membrane, and its visual impact.
Best Disease in 13 Years Old Female
Authors: K Naya , I Lidya , I Hasnaoui , H Tazi , A Erradi , C Bardi , E Abdallah , A Berraho
Published: July 2021

Best disease is a hereditary-degenerative macular dystrophy. Described for the first time by Friedrich Best, It is due to the accumulation of lipofuscin in the macular pigment epithelium. We report a case of a 13 years old female with no medical history. Slit lamp examination revealed unremarkable findings in the anterior segment of both eyes. Posterior segment exam, at the macula, showed a well circumscribed yellow material similar to the egg yolk structure, in both eyes (Figure 1). Figure 1: Retinography with bilateral egg yolk-like image on macula. The Optical Coherence Tomography (OCT) macula revealed Pigmentary Epithelial Detachment (PED) and LE atrophic scar. The systemic examination had no remarkable findings. The patient was diagnosed Best Vitelliform macula.
Valsalva Retinopathy and Pregnancy
Authors:   Department of Ophthalmology B, Ibn-Sina University Hospital, Rabat, Morocco, K Naya , I Lidya ,   Department of Ophthalmology B, Ibn-Sina University Hospital, Rabat, Morocco, I Hasnaoui ,   Department of Ophthalmology B, Ibn-Sina University Hospital, Rabat, Morocco, H Tazi ,   Department of Ophthalmology B, Ibn-Sina University Hospital, Rabat, Morocco, A Erradi ,   Department of Ophthalmology B, Ibn-Sina University Hospital, Rabat, Morocco, C Bardi ,   Department of Ophthalmology B, Ibn-Sina University Hospital, Rabat, Morocco, E Abdallah ,   Department of Ophthalmology B, Ibn-Sina University Hospital, Rabat, Morocco, A Berraho ,   Department of Ophthalmology B, Ibn-Sina University Hospital, Rabat, Morocco
Published: July 2021

Pregnancy is a risk factor for Valsalva retinopathy. We report a case of a 33 year old pregnant woman, who presented Valsalva retinopathy after an effort of defecation followed by constipation. The diagnosis should be made after eliminating other causes of hemorrhage. The evolution is usually spontaneously favorable.
Factors Associated with Scheduled Endoscopy Non-Compliance – A Literature Review
Authors:   Department of Internal Medicine, University of Maryland, Capital Region Medical Center, USA, F Yazdanpanah , I Mayer ,   Division of Gastroenterology, Maimonides Medical Center, USA, R Rahmani ,   Division of Gastroenterology, Maimonides Medical Center, USA
Published: July 2021

Non-Compliance with endoscopy appointments places a major burden on the healthcare system and can lead to delay in the diagnosis and treatment of potentially life-threatening conditions. Although several studies have investigated causes, trends, and interventions to improve compliance with endoscopy appointments, we present a comprehensive, high-quality, and focused literature review on this important topic. A search of the PubMed database revealed 72 papers that were screened for eligibility according to their title and text; among these 72, a total of 42 papers are focused on non-compliance with endoscopy, and 12 investigated ways to improve compliance. The average non-compliance rate for endoscopy was found 22.25%. Patients’ age (younger than 60-year-old), low socioeconomic status, history of healthcare visits non-adherence, medical history, and season/month of the appointment all contribute to non-compliance with endoscopy appointments. On the other hand, decreasing scheduling lead time and some specific modes of appointment confirmations could improve appointment-keeping behavior.
Calcification of Falx Cerebri between Male and Female Patients: A Comparative Study
Authors:   Department of Radiographer, Radiology, Al-Namas General Hospital, Ministry of Health, Al-Namas City, Saudi Arabia, A Aahmari
Published: July 2021

Objectives: The aim of this paper is to study the calcification that occurs in the inter−hemispheric fissure to compare between male and female patients. Materials and Methods: The level of density and size of these calcifications were collected and analyzed in 30 patients randomly. Results: The result of this study showed that there is a relation between falx cerebri and gender since its more common in female patients. The density of the calcifications is higher in males and the calcifications are longer on the AP axis, while the falx cerebri calcifications are wider in the coronal axis in females. Conclusion: There is a relation between Calcification of falx cerebri and gender.
Neonatal Sepsis: A Review of the Literature
Authors:   Department of Pediatrics, University of Lubumbashi, Lubumbashi, Democratic Republic of the Congo, AM Nyenga , O Mukuku ,   Institut Superieur des Techniques Medicales, Lubumbashi, Democratic Republic of Congo, SO Wembonyama ,   Department of Pediatrics, University of Lubumbashi, Lubumbashi, Democratic Republic of the Congo
Published: July 2021

Neonatal sepsis contributes significantly to neonatal morbidity and mortality and is a major public health challenge around the world. Depending on the mode of occurrence, a distinction is made between maternal-transmitted infection and that acquired in the postnatal period. Although the etiologies maternally transmitted diseases are well understood, those of postnatal acquired infections are variable depending on the epidemiology of each hospital environment. On the one hand, risk factors for maternal-transmitted infections are maternal sepsis, prolonged premature rupture of membranes, chorioamnionitis, and bacteriuria in the mother during pregnancy. On the other hand, risk factors for postnatal acquired infections are prematurity, low birth weight, lack of hygiene, and invasive therapeutic interventions. The diagnosis is based on a series of anamnestic, clinical and biological features. Although the positive diagnosis is based on the isolation of the germ by culture on a body sample (blood, cerebrospinal fluid, urine, etc.); its low sensitivity leads to the use of markers of the acute phase of inflammation such as C-reactive protein, procalcitonin and interleukins. New molecular biology techniques are promising and offer precise diagnosis with rapid results. Empirical management is a function of microbial ecology while definitive treatment is guided by the results of microbial culture. This article presents the essential elements for understanding neonatal sepsis and discusses new diagnosis and therapeutic management. It offers a thorough reading based on the issue of infections in newborns.
Semi-automated simulations: Know your schedules
Authors: Bakshi Nilesh , Donn Michael , Newmarch E
Published: July 2021

This study tests semi-automated simulation measures such as schedules and occupancy profiles in B I M software packages to establish energy performance predictions for the purposes of providing evidence of compliance. These predictions are tested against an archetypal range of household operation figures that are based on the data collected of approximately 400 households monitored for 11 months each. This study identifies that standardising the simulations by using the archetypal range of dwelling occupation predictions produces a more consistent outcome in energy evaluation across both software packages. However, both of the B I M software packages tested in this study are unable to establish energy performance predictions that align with the real-world measured data. This suggests that in-built semi-automated simulation measures, beyond the optimised schedules and occupancy profiles, investigated in this study, need to be examined in greater detail.