bluuebunny/crossref_metadata_2025 huggingface dataset:
Characterization and Spectroscopic Applications of Metal Foams From New Lightweight Materials
Authors: Celik Sefa , Bekoz Ullen Nuray , Akyuz Sevim , Karabulut Gizem , E. Ozel Aysen
Published: October 2021

Lightweight materials such as metallic foams possess good mechanical, chemical, and physical properties, which make them suitable for a wide range of functional and structural applications. Metal foams have recently gained substantial interest in both industry and academia due to their low cost, thermal conductivity, high working temperature, vibration damping, specific mechanical properties, energy absorption, and heat resistance. The use of metal foams on a large scale and successful applications depend on a detailed understanding of their characteristic properties. Metallic foams are characterized by the morphology of the porous cells (size and shape, open or closed, macro and micro), pore topology, relative density, properties of the pore wall, and the degree of anisotropy. This contribution focuses on x-ray diffraction, Fourier transform infrared (FT-IR), and Raman spectroscopic applications used for the characterization of metal foam, and also a brief of the most important applications, including a significant number of examples given.
From In-Person to Online Teaching
Authors: Fenderson Douglas Graham
Published: October 2021

Restrictions from the COVID-19 pandemic forced many teachers across the United States to teach their students remotely using online teaching strategies. Analyzing teachers' perceptions and expectations of online teaching before and during the pandemic help stakeholders understand how to better handle the challenges of online learning. The literature review examines the traditional differences between teaching online and in-person courses, challenges faced when teaching online courses, and teacher perceptions of online learning. The survey method was used to collect data on the experiences of online teaching before and during the pandemic from ninth through twelfth grade teachers in a North Texas school district. The study results show that factors such as a teacher age or years of experience had less influence determining if they were prepared for online teaching. Rather, factors like a teacher school campus, prior experience, and access to support structures correlated more to teachers having a high level of preparedness for online teaching.
COVID and Counseling
Authors: King Bonnie Carter
Published: October 2021

Due to the COVID-19 crisis, the mental health profession has shifted to online service provision, or telehealth. The aim of this chapter is to describe the COVID-19 crisis and subsequent changes that occurred to mental health service provision; the benefits and drawbacks to telehealth from practical, ethical, and cultural perspectives; and the learning opportunities that have come from this crisis. Finally, reflections on the future of the counseling profession and trends in service provision for serving an increasingly diverse population will be analyzed.
Post-Conflict Azerbaijan and Development for Peace
Authors: Iskandarli Ramil
Published: October 2021

The recent military confrontation including Armenia and Azerbaijan, which raged unabated for six weeks, has caused casualties, damages, and displacement of the local population. The fighting pushed hundreds of thousands to flee their homes for safety, of which some remain displaced and will not be able to return to their homes in the long term. The hostilities have brought damage to livelihoods, houses, and public infrastructure. Moreover, many areas have been left with mines and other unexploded ordnances, bringing significant risks for the civilian population. Despite the ceasefire agreement between Armenia and Azerbaijan on 10 November 2020, the humanitarian situation remains of concern. The President of Azerbaijan paid more attention to the rebuilding and reconstruction of Karabakh rather than to continue endless discussions on the status of Karabakh. Ilham Aliyev said that, during the second Karabakh war, Armenia committed war crimes. We are facing a great challenge and a great task related to the demining and reconstruction of liberated territories.
Results of Russian Occupation and Economic Crisis in Georgia's Conflict Areas in the Case of Abkhazia
Authors: Gasviani Bondo Nikoloz , Zhorzholiani Tinatin , Shengelia Teimuraz
Published: October 2021

The present study analyzes the historical background of the formation of the Abkhazian economy and geographical-resource potential and the economic situation of Abkhazia before and after the Russian-Georgian war of 1991-1992. Special attention was paid to the recognition of the international status of the Republic of Abkhazia by the Russian Federation, in gross violation of international norms, the results of which did not have a significant positive impact on the economic or social well-being of the local population. However, it confirmed Russia's imperialist intentions concerning occupation of Georgian territory with the status of “peacemaker” in 1992-1993 and the fact of misleading the international community. In the chapter, the criminal nature of the economy of occupied Abkhazia is substantiated. Also, the chapter analyzes the mechanisms/levers of economic pressure management in the Russian-occupied territory and its negative consequences for the population living in the area.
A Crying Economy in a Bleeding State
Authors: Agulonye Uzoma Vincent Patrick , Adayi Daniel
Published: October 2021

Nigeria's multi-ethnic, multi-cultural, and multi-ideological nature is a complexity that should spur a synergy for development in all spheres. The theory of dissipative structures employed suggests that. Contrarily, the pursuit of individual group interests to the detriment of others leads to entropy that dissipates development and economic growth that its population needs. Ethnic and religious militia emerged in response to such problems and threats that has brought in consistent loss of lives and properties which whip the economy and country leaving the state bleeding. Militia internationalisation are important factors discussed as well. This chapter looks at the factors behind the emergence of these militias and the consequences their activities have on local economies of their regions and the national economy.
Studying the Drivers of Consumer Behavioural Engagement With Social Media Brand-Related Content
Authors: Ebrahim Reham Shawky
Published: October 2021

The actual behavioural engagement of consumers with social media brand-related content is measured by three activities; consumption, contribution and creation. This type of engagement is considered the true practical indicator of the success of brand presence on social media. The study aims to uncover the drivers of consumer behavioural engagement identified by the key characteristics of social media context. Accordingly, quality dimensions and perceived usefulness of the brand hosting media channel are adopted from the IT use and acceptance models. Data is collected using self-administrated questionnaire from a sample of 366 respondents in the UK. Structural Equation Modeling-V.26 was used to analyse the data. The results support the significant role of cognitive absorption in explaining how perceptions of social media quality dimensions are shaped to motivate consumer engagement behaviour. The findings enrich the extant literature of consumer engagement; additionally, several practical insights can be drawn related to the design of social media marketing strategy.
Customer Satisfaction and Loyalty for Online Food Service Providers in Jharkhand State
Authors: Sinha Anand Prasad , Srivastava Praveen , Asthana Ashok Kumar , Srivastava Sanjiv Kumar , Nag Aditi K.
Published: October 2021

In the food sector, customer have been voting by their feet since ages. However, due to the technological changes clubbed with present COVID-19 pandemic, the trend has changed rapidly. Customers are confined to their home and technology has emerged as the only saviour. Increase in the number of downloads of food ordering app is an indication of both popularity of this app and helplessness of the present age customer. With restricted movement, they have these apps to either get the food delivered at their doorstep or take away with pre-orders. Hence, it becomes imperative for the app designer and food service provider to brainstorm and develop an app which can focus on the customer ease rather than forcing their design and interface to the customer. In this backdrop, the present study is a novel attempt which primarily focuses on the relationship between app quality and customer satisfaction.
User Antecedents, CRM Implementation, and Impact on Customer Outcomes in the Jordanian Service Industry
Authors: Abbad Muneer M. , Magboul Ibrahim Hussien Musa , Jaber Faten , Alrawabdeh Wasfi
Published: October 2021

The implementation of Customer Relationship Management (CRM) has become increasingly important to scholars and practitioners over the last two decades. This study examined the relationships between user antecedents, CRM implementation, and customer outcomes. Its aims were to identify CRM user antecedents, explore the impact of these antecedents on CRM implementation, and examine the connection between CRM implementation and customer outcomes: loyalty, retention, and satisfaction. A quantitative method was employed consisting of a structured questionnaire. A total of 290 completed questionnaires were returned and analyzed with structural equation modelling techniques. The results indicated there were significant positive relationships between four out of five antecedents and CRM implementation; however, an impact of user involvement was not supported by the data. CRM implementation was also found to positively affect all three customer’s outcomes: loyalty, retention, and satisfaction. These findings are of practical and theoretical value to practitioners, customers, and policy makers
A Mixed-Method Approach to Examining the Drivers and Outcomes of Citizen Trust Towards E-Government
Authors: Almamy Ahmed Saiedalameen M. , Mishra Atul , Chowdhury Dababrata
Published: October 2021

This study investigates the antecedents and consequences of trust in e-government websites in Saudi Arabia. FSQCA and Structural equation modelling were used to analyse data collected from 504 participants. The findings indicate that our unified framework possesses some predictive ability regarding citizens' intentions to use e-government services, which was superior to existing theories. The findings indicate that (1) there is no sole factor that sufficiently motivates citizens to use e-government services; (2) three distinct settings of citizens' intention drivers are probable to lead in a significant level of citizens intending to use e-government services; and (3) Uncertainty avoidance has a moderating effect on citizens’, intention to use e-government services. The theoretical and practical implications were demonstrated.
An Engineering Domain Knowledge-Based Framework for Modelling Highly Incomplete Industrial Data
Authors: Li Han , Liu Zhao , Zhu Ping
Published: October 2021

The missing values in industrial data restrict the applications. Although this incomplete data contains enough information for engineers to support subsequent development, there are still too many missing values for algorithms to establish precise models. This is because the engineering domain knowledge is not considered, and valuable information is not fully captured. Therefore, this article proposes an engineering domain knowledge-based framework for modelling incomplete industrial data. The raw datasets are partitioned and processed at different scales. Firstly, the hierarchical features are combined to decrease the missing ratio. In order to fill the missing values in special data, which is identified for classifying the samples, samples with only part of the features presented are fully utilized instead of being removed to establish local imputation model. Then samples are divided into different groups to transfer the information. A series of industrial data is analyzed for verifying the feasibility of the proposed method.
Critical Success Factors of Business Intelligence Implementation in Thai Hospitals
Authors: Janyapoon Suwat , Liangrokapart Jirapan , Tan Albert
Published: October 2021

Business intelligence (BI) has become a popular among management executives of different industries. Many publications have mentioned Big Data and how to use data intelligently. However, little is known about how to successfully implement BI in the healthcare industry. The unique characteristic of this business, which focuses only on quality of care and patient safety, has a big impact on decision-making. This research is based on a literature review and empirical evidence collected from interviews with professionals involved in the healthcare industry. Twenty-four hospital executives and Information Technology staff who have direct or indirect experience with BI were interviewed. It investigates critical success factors for BI implementation in hospitals and provides insight into the healthcare industry in Thailand. The concept of grounded theory was applied for content analysis. Insights from this research contribute to academia and the healthcare industry by providing first-time evidence of specific factors for BI implementation and guidelines in hospitals.
Can Global, Extended, and Repeated Ransomware Attacks Overcome the User's Status Quo Bias and Cause a Switch of System?
Authors: Zarifis Alex , Cheng Xusen , Jayawickrama Uchitha , Corsi Simone
Published: October 2021

Ransomware (RW) attacks’ effectiveness has increased causing far reaching consequences that are not fully understood. The ability to disrupt core services, the global reach, extended duration and the repetition has increased their ability to harm an organization. One aspect that needs to be understood better is the effect on the user. The user in the current environment is exposed to new technologies that might be adopted but there are also habits of using existing systems. The habits have developed over time with trust increasing in the organization in contact directly and the institutions supporting it. This research explores whether the global, extended and repeated RW attacks reduce the trust and inertia sufficiently to change long held habits in using information systems. The model tested measures the effect of the RW attack on the e-commerce status quo to evaluate if it is significant enough to overcome the user’s resistance to change.
Secured and Privacy-Based IDS for Healthcare Systems on E-Medical Data Using Machine Learning Approach
Authors: Sengan Sudhakar , Khalaf Osamah Ibrahim , Vidya Sagar P.  , Sharma Dilip Kumar , Arokia Jesu Prabhu L.  , Hamad Abdulsattar Abdullah
Published: October 2021

Existing methods use static path identifiers, making it easy for attackers to conduct DDoS flooding attacks. Create a system using Dynamic Secure aware Routing by Machine Learning (DAR-ML) to solve healthcare data. A DoS detection system by ML algorithm is proposed in this paper. First, to access the user to see the authorized process. Next, after the user registration, users can compare path information through correlation factors between nodes. Then, choose the device that will automatically activate and decrypt the data key. The DAR-ML is traced back to all healthcare data in the end module. In the next module, the users and admin can describe the results. These are the outcomes of using the network to make it easy. Through a time interval of 21.19% of data traffic, the findings demonstrate an attack detection accuracy of over 98.19%, with high precision and a probability of false alarm.
A Discrete Crow Search Algorithm for Mining Quantitative Association Rules
Authors: Ledmi Makhlouf , Moumen Hamouma , Siam Abderrahim , Haouassi Hichem , Azizi Nabil
Published: October 2021

Association rules are the specific data mining methods aiming to discover explicit relations between the different attributes in a large dataset. However, in reality, several datasets may contain both numeric and categorical attributes. Recently, many meta-heuristic algorithms that mimic the nature are developed for solving continuous problems. This article proposes a new algorithm, DCSA-QAR, for mining quantitative association rules based on crow search algorithm (CSA). To accomplish this, new operators are defined to increase the ability to explore the searching space and ensure the transition from the continuous to the discrete version of CSA. Moreover, a new discretization algorithm is adopted for numerical attributes taking into account dependencies probably that exist between attributes. Finally, to evaluate the performance, DCSA-QAR is compared with particle swarm optimization and mono and multi-objective evolutionary approaches for mining association rules. The results obtained over real-world datasets show the outstanding performance of DCSA-QAR in terms of quality measures.
A Data-Driven Analysis on Sustainable Energy Security
Authors: Bui Tat Dat , Tseng Ming-Lang
Published: October 2021

This study provides a data-driven analysis that illustrates a clear renewable energy depiction in sustainable energy security and unveils the regional issues due to the literature solely occupies energy security concept in the descriptions view, and renewable energy differences related to regions are rarely discussed. A hybrid method is proposed to valid those indicators and shows the trend of future studies. This study enriches the challenges and opportunities by contributing to understand the fundamental knowledge of renewable energy in sustainable energy security frontier, conveyance directions for future study and investigation, and assessment on global renewable energy position and regional disparities. There are valid 19 indicators, in which energy demand, energy policy, renewable resources, smart grid, and uncertainty representing the future trends. World regional comparison includes 115 countries/territories and categorized into five geographical regions. The result shows that those indicators have addressed different issues in the world regional comparison.
Does Rent-Seeking Affect Environmental Regulation?
Authors: Du Zhili , Zheng Lirong , Lin Boqiang
Published: October 2021

Resource utilization not only meets the needs of economic development, but also has a far-reaching negative impact on the environment. Environmental regulation is regarded as the key measure to solve environmental pollution. However, the rent-seeking behavior of local enterprises will seriously weaken the implementation effect of environmental regulations. Under the background of the development of big data era, the massive micro enterprise data provided by China's private enterprise survey database provides favorable conditions for this paper to study its impact effect from the direction of big data. This paper uses OLS model and Tobit model to investigate the impact of rent-seeking on the implementation effect of environmental regulation. The results show that environmental regulation will make honest enterprises actively reduce output to control the emission level. However, rent-seeking enterprises will further expand their output to gain greater profits because they are sheltered by local governments.
Does the Kyoto Protocol as an International Environmental Policy Promote Forest Carbon Sinks?
Authors: Ge Jiamin , Lin Boqiang
Published: October 2021

Under the background of carbon neutrality, the carbon sequestration of forest ecosystems is an important way to mitigate climate change. Forest could not only protect the environment but also an important industry for economic development. As an international climate policy that first recognized the role of forest carbon sinks on climate change, the question becomes, has the Kyoto Protocol promoted the development of forest carbon sinks in contracting parties? To explore this, data of forest can be obtained at the national level. Hence, data of economic, social, polity and climate in 147 countries is also collected. The generalized synthetic control method is adopted. The results show that the policy effect of the Kyoto Protocol was obvious and significant. Moreover, the effect was more significant after the enforcement in 2005. Especially after the first commitment period, the policy effect of the second period is more obvious. Some policy implications are drawn.
Post-Acne Hyperpigmentation: Evaluation of risk factors and the use of Artificial Neural Network as a predictive classifier
Authors: Al-Qarqaz Firas , Bodoor Khaldon , Baba Ala , Al-Yousef Ali , Muhaidat Jihan , Alshiyab Diala
Published: October 2021

Background: Acne is common among young individuals. People with dark skin have a higher risk for developing pigmentary complications.  Inflammation is an important factor in post-acne hyperpigmentation however other factors are also involved in developing this complication however these factors are not well studied.

Objective: The aim of this study is to identify risk factors involved in post-acne hyperpigmentation.

Materials and Methods: Clinical data related to acne, acne- related hyperpigmentation were collected. Data was analyzed for risk factors associated with acne pigmentation. Artificial neural network was used as predictive disease classifier for the outcome of pigmentation.

Results: Majority of patients in this study (339 patients) had dark skin phototypes (3 and 4). Post- acne hyperpigmentation was seen in more than 80% of patients. Females, darker skin color, severe acne, facial sites, and excessive sunlight exposure, squeezing or scratching lesions are important risk factors for post-acne hyperpigmentation.

Conclusion: Post-acne hyperpigmentation is multifactorial. Several factors implicated in PAH are modifiable by adequate patient education (lesion trauma, excessive sunlight exposure). The use of ANN was helpful in predicting appearance of post-acne hyperpigmentation based on identified risk factors.
Follmann balanitis and anetoderma in secondary syphilis
Authors: Drago Francesco , Ciccarese Giulia , Parodi Aurora
Published: October 2021

Not available
The first floristic study of freshwater dinoflagellates (Dinophyceae) in Colombia
Authors: Bustamante-Gil Carolina , Amat Eduardo , Boltovskoy Andrés , Ramírez-Restrepo John J.
Published: October 2021

The first comprehensive study of dinoflagellate flora and their related environmental variables in reservoirs, swamps, and an insular lake of Colombia is presented. Fourteen Colombian water bodies were assessed. In each, water temperature, electric conductivity, oxygen saturation, turbidity, and apparent color were the physical and chemical variables measured. Twelve dinoflagellate taxa were recorded, indicating a considerable richness compared to similar surveys. Ensembles recovered showed a spatial structuration mediated by the type of the water bodies (reservoirs and swamps); environmental variables and species richness explained equally the differences among the water bodies. The dinoflagellate flora showed altitudinal segregation, with intermediate altitude systems displaying the highest richness values. A brief discussion about the geographical distribution of the species collected is offered. The study contributes to the knowledge of the ecological aspects of dinoflagellate flora and outlines preliminary biodiversity tendencies of ensembles in tropical water systems.
Allergic diseases and COVID-19: experience of a single Italian hospital during the first COVID-19 wave
Authors: Attanasi Marina , Porreca Annamaria , Sferrazza Papa Giuseppe Francesco , Di Donato Gulia , Cauzzo Chiara , Patacchiola Roberta , Di Filippo Paola , Di Pillo Sabrina , Chiarelli Francesco
Published: October 2021

The aim of this study was to compare the number of the Pediatric Emergency Department (PED) visits for young allergic patients with respiratory or cutaneous symptoms during the first wave of the coronavirus disease 19 (COVID-19) pandemic in 2020 with the same period in 2019, evaluating the percentage of positive cases to Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). We carried out a retrospective analysis using data from young patients who visited the PED with cutaneous or respiratory symptoms in the period from 20th February to 12th May of the years 2020 and 2019. Data on allergy and COVID-19 nasal swab were also collected. We observed eleven (28.2%) PED visits for allergic patients with respiratory or cutaneous symptoms for the period from 20th February to 12th May of the year 2020 and ninety-three (31.8%) PED visits for the same time frame of the year 2019 (p=0.645). Only a two-month-old child out of 39 patients with non-allergic respiratory or cutaneous symptoms resulted positive for SARS-CoV-2. Specifically, we found for all the PED visits: 21 (7.2%) in 2019 vs 2 (5.1%) in 2020 for patients with urticaria/angioedema or atopic dermatitis (p=0.634); 3 (1.0%) in 2019 vs 3 (7.7%) in 2020 for patients with anaphylaxis (p=0.003); 19 (6.5%) in 2019 vs 2 (5.1%) in 2020 for those with asthma (p=0.740); 11(3.8%) in 2019 vs 1(2.6%) in 2020 for those with lower respiratory diseases, excluding asthma (p=0.706); 39(13.4%) in 2019 vs 3 (7.7%) in 2020 for those with upper respiratory diseases (URDs) (p=0.318). We also showed a substantial decrease (~80%) in all PED visits compared with the same time frame in 2019 (absolute number 263 vs 1211, respectively). Among all the PED visits a significant reduction was mostly found for URDs [155 (12.8%) in 2019 vs 17 (6.5%) in 2020; p=0.045)]. The total number of PED visits for allergic patients with respiratory or cutaneous symptoms dropped precipitously in 2020. It is very tricky to estimate whether it was a protective action of allergy or the fear of contagion or the lockdown or a reduction in air pollution that kept children with allergy from visiting the PED. Further studies are needed to better understand the impact of underlying allergies on COVID-19 susceptibility and disease severity.
Age-cumulative Effect of REC8 Reduction on Meiotic Chromosome Segregation Errors in Mice
Authors: Tian Li-Yuan , Zhang Ling , Tao Cheng-Qiu , Lin Xiao-Qi , Zhang Feng , Zhang Bin
Published: October 2021

Abstract

Objective:

This study aimed to explore the relationship between cohesin subunit REC8 reduction and meiosis chromosome segregation errors in the ovary.

Methods:

Rec8
+/− mice were generated using CRIPSR/Cas9 gene editing. The association between age and REC8 expression levels in the ovary was determined by Western blotting. Chromosome segregation errors were investigated by immunofluorescence imaging of superovulated oocytes. Wild-type and Rec8
+/− female mice at 5, 8, 20, 36, and 40 weeks were used to evaluate ovarian reserve by ovarian clearing and immunolabeling.

Results:

Ovary REC8 expression levels gradually decreased with age, while chromosome segregation errors increased with age. Segregation errors were more common in Rec8
+/− mice, suggesting an association with REC8 expression. The ovarian reserve capacity decreased significantly with age. The ovarian reserve in Rec8
+/− mice was inferior to that of age-matched wild-type mice, indicating important roles of age and REC8 levels in the ovarian reserve.

Conclusions:

REC8 reduction has an age-cumulative effect on meiotic chromosome segregation errors in mouse ovaries. Rec8 haploinsufficiency poses a major challenge in generating normal and reproductive oocytes in aging mice.
The application of image-guided video-assisted thoracoscopic surgery to bilateral pulmonary nodules resection
Authors: Cheng Ya-Fu , Liang Chu-Chun , Chen Heng-Chung , Ke Pei-Cing , Hung Wei-Heng , Cheng Ching-Yuan , Wang Bing-Yen
Published: October 2021

Background:

In tradition, bilateral small pulmonary nodules are localized in a computed tomography room and operation twice for fear of complications. In contrast, image-guided video-assisted thoracoscopic surgery (iVATS) is applied to localize small pulmonary nodules and resect these nodules in a single stage. The application of iVATS for bilateral pulmonary nodule localization and resection has not been explored. This study describes the methods and outcomes of bilateral small pulmonary nodule localization and resection in a single-staged method.

Materials and Methods:

This study is a retrospective analysis in our institute (Changhua Christian Hospital, Changhua, Taiwan). Patients with bilateral small pulmonary nodules who received single-staged iVATS from July 2018 to May 2020 were included in the study. The outcome measurements include operative time, localization time of one side, nodule pathologies, operative method, presence of complications, chest tube duration, and length of hospital stay (LOS).

Results:

Twenty-one patients with bilateral pulmonary nodules were included in this study, and a total of 50 pulmonary nodules were resected. The average operative time for a procedure was 203 min (95% confidence interval [CI]: 160–246 min), which included 18 min (95% CI: 13–23 min) of localization time for each side. Eight of 21 patients (38.10%) showed different pathologies among their bilateral nodules. There was only one complication noted; it was due to prolonged air leakage at the left side.

Conclusion:

There were about 40% different pathologies for synchronous bilateral lung nodules. Single-staged iVATS is feasible and efficient for bilateral small lung nodules resection.
Comparative Evaluation of Fracture Resistance and Mode of Failure of Ceramic Veneers with Different Design Preparations
Authors: Sharma Nitin , Gupta Rajeev , Nagpal Archana , Katna Vishal , Samra Rupandeep Kaur
Published: October 2021

Background:

Ceramic veneers is one of the conservative esthetic treatment modality in dentistry. Success of veneer is very much dependent on the design preparation.

Materials and Methods:

Thirty selected teeth were categorized within three groups of 10 each with varying design preparations. After mounting the specimens, the incisal reduction was done, and porcelain laminate veneers were fabricated. Then cementation of the veneers was done with resin-cement, and fracture load was applied and recorded.

Results:

Multiple comparisons were done using post-hoc Tukey's test and modality of failure of veneers among the different designs were done using Chi-square test with the level of significance fixed at 0.05.

Conclusion:

Ceramic veneers preparation design including1 mm incisal reduction along with 1 mm of palatal-chamfer height revealed greater fracture toughness in contrast to incisal-reduction 1 mm along with butt-joint preparation design.
Effect of Root Canal Irrigants on Calcium Silicate Cements
Authors: Agrawal Astha , Mittal Anika , Dadu Shifali , Dhaundiyal Aditi , Tyagi Nikita
Published: October 2021

Aim:

The objective of the study was to compare the effect of different irrigation regimes on push out bond strength of calcium silicate cements – Biodentine and mineral trioxide aggregate (MTA).

Materials and Methods:

Forty-eight human teeth with single root canals were divided into three groups according to irrigation regimes. Each canal was irrigated with 5 ml of each irrigant during and after biomechanical preparation as follows: 3% sodium hypochlorite (NaOCl) and 17% ethylenediaminetetraacetic acid; 3% NaOCl during and Q mix 2 in 1 after instrumentation and distil water as the control group. Canals were filled with biodentine and MTA accordingly. A horizontal middle root section of 1.5-mm thickness was taken, and analysis was done under the universal testing machine.

Statistical Analysis Used:

The statistical analysis was done by the one-way analysis of variance and post hoc Tukey test. The comparative analysis was done by using the independent t-test.

Results:

The push-out bond strength of 3% NaOCl + Q mix 2 in 1 was highest. The least was of the control group.

Conclusion:

The irrigation regimes have a differential effect on root canal sealers.
Topography-guided laser in-situ keratomileusis to treat visual distortions due to higher-order aberrations induced after ablation procedures
Authors: Choudhary Urvija , Choudhary Ayushi , Choudhary Rajiv
Published: October 2021

A 27-year-old male, with a history of bilateral Laser in situ keratomileusis (LASIK) followed by photorefractive keratectomy, presented with complaints of disturbed quality of vision, the right eye worse than the left eye. Uncorrected distance visual acuity (UDVA) was 20/20 in both eyes. Corneal topography and wavefront aberrometry revealed slightly decentered ablation and increased higher-order aberrations in the right eye, respectively. A topography-guided femtosecond-assisted LASIK was performed for the right eye successfully reducing his visual symptoms and conserving UDVA at 20/20.
Atypical keratitis caused by Leifsonia aquatica with “cracked windshield” appearance and disabling ocular pain
Authors: Hernandez-Camarena Julio C , Ruiz-Lozano Raul E , Andrade-Leal Samantha E , Roman-Zamudio Mariana , Valdez-Garcia Jorge E
Published: October 2021

Microbial keratitis is a potentially sight-threatening complication of contact lens (CL) wear. Microbiological investigations, close follow-up, and culture-guided treatment are mandatory to achieve a favorable outcome. Poor CL hygiene and exposure to contaminated water, associated with severe ocular pain, are hallmarks of Acanthamoeba keratitis (AK). However, AK is characterized by an insidious onset. We report a case of an acute onset CL-related keratitis associated with L. aquatica, a Gram-positive bacterium. A history of river water exposure and disabling ocular pain, which resembled AK but with unusual slit-lamp findings, made the diagnosis challenging.
A 28-week-old fetus with an orbital immature teratoma
Authors: Zhao Qing , Du Xueli , Yang Ye , Zhou Yali , Zhang Meng
Published: October 2021

A teratoma is a tumor comprising three embryonic germ layers. Teratomas are classified as mature and immature teratomas based on their histological differentiation. Few teratomas, particularly immature teratomas, occur in the orbital cavity. We report a case of a 28-week-old fetus with an orbital immature teratoma. The parents terminated the pregnancy because of the rapid growth and unknown nature of the tumor. Owing to its relatively low incidence, no standard treatment for orbital teratomas has been devised. Generally, to preserve vision and for aesthetic reasons, surgery should be performed as soon as possible.
Subacute postoperative endophthalmitis secondary to sutureless self-sealing corneal wound infection at both main cornea and side port wounds
Authors: Michael Ngu DB , Kueh Ye Y
Published: October 2021

Corneal wound infection following cataract surgery is rare. We describe a case of wound infection at both the main wound and the side port wound following uncomplicated phacoemulsification. Candida albicans was isolated, and the condition worsened with progression to endophthalmitis. Vitrectomy was done, and the infection was controlled after 3 months of topical and systemic antifungal medications.
Asymmetric maculopathy with mutations in adenosine triphosphate-binding cassette, sub-family A, member 4 and jagged canonical notch ligand 1 after 30 years of monocular aphakia
Authors: Patel Prem N , Jones Kaylie D , Birch David B , Ufret-Vincenty Rafael L
Published: October 2021

We report an unusual case of asymmetric maculopathy in a patient with a 30-year history of monocular aphakia. An 82-year old man presented with unexplained visual loss in his right eye. Examination revealed loss of the ellipsoid zone, abnormal visual fields, and multifocal electroretinogram, all worse in the right eye. Suspecting a genetic predisposition to maculopathy that may have been exacerbated by the asymmetric media, we conducted genetic testing that revealed mutations in adenosine triphosphate-binding cassette, sub-family A, member 4 (ABCA4) and jagged canonical notch ligand 1 (JAG1). This case shows that a genetic predisposition toward maculopathy may be exacerbated by extraretinal factors, including the asymmetric phakic status of the eyes.
Chondroid syringoma of the upper eyelid – A rare case
Authors: Nigam Jyoti , Tripathi Anant Prakash , Yadav Manoj Kumar
Published: October 2021

Chondroid syringoma is a benign mixed tumor characterized by sweat gland elements in a cartilaginous stroma. A 34-year-old male patient presented with a slow growing mass since 2 yrs. A complete surgical excision was done for the same under local anesthesia which showed a significant improvement. Our report aims to raise awareness about this rare benign tumour of the eyelids and to study the histopathological aspects of it.
Perception of First-Year Medical Students of Virtual Video Demonstration of the Objective Structured Clinical Examination at King Saud University Medical College in Saudi Arabia during the COVID-19 Pandemic
Authors: Soliman Mona M. , AlGhamdi Maha Abdullah , Shadid Abdulaziz Mustafa , Alsaif Faisal Fahad , Alkuwaiz Lamia Abdullah , Alaql Maisa Saleh , Khdary Mohammad Nezar , Basfar Ali Alaa , Alsohime Fahad , Aldhahri Saleh , Neel Khalid Fouda
Published: October 2021

Background:

The coronavirus disease of 2019 (COVID-19) has challenged and disrupted medical education worldwide. Objective structured clinical examination (OSCE) is one of the types of assessment for undergraduate medical students that has been conducted for first-year medical students in the College of Medicine. Peer student training on participating in OSCE has been conducted prior to the pandemic. The aim of this study was to assess medical students' perception of online virtual peer student video training on participating in the OSCE.

Methods:

Medical student's council team prepared a video demonstration on the steps of participating in OSCE. In October 2020, the video was provided online for first-year medical students (n = 302) prior to their OSCE. After the completion of the OSCE exam, a 10 – item questionnaire was distributed on the students' perception on the impact of the peer student video demonstration on students' orientation about the OSCE. The questionnaire was sent by Google Forms. The results were expressed as a percentage on a Likert scale.

Results:

About 74.17% (n = 224) of students responded to the online questionnaire. More than half of the students (n = 126, 56%) found the steps of conduction of the OSCE well explained, provided the sufficient orientation (n = 121, 54%), and found the video stimulating (n = 122, 54%). In addition, the majority of students (n = 160, 71%) learned and understood the steps of the OSCE and 152 students (68%) found that the video helped introducing them to the concept of OSCE. Almost half the students found that the video helped lowering the stress level before the OSCE (n = 91, 41%), eased the steps of the OSCE (n = 113, 50%), and found that the materials were well prepared and explained (n = 126, 56%).

Conclusions:

The virtual video demonstration of the OSCE during the COVID-19 pandemic had an overall positive perception from first-year medical students. However, peer student's orientation on the OSCE will continue after the pandemic. Further supports for first-year medical students are needed during the pandemic.
On Parabolic Restriction of Perverse Sheaves
Authors: Bezrukavnikov Roman , Yom Din Alexander
Published: October 2021

We prove exactness of parabolic restriction and induction functors for conjugation equivariant sheaves on a reductive group generalizing a well-known result of Lusztig who established this property for character sheaves. We propose a conjectural (but known for character sheaves)

t

-exactness property of the Harish-Chandra transform and provide evidence for that conjecture. We also present two applications generalizing some results of Gabber and Loeser on perverse sheaves on an algebraic torus to an arbitrary reductive group.
Arc Spaces and Chiral Symplectic Cores
Authors: Arakawa Tomoyuki , Moreau Anne
Published: October 2021

We introduce the notion of chiral symplectic cores in a vertex Poisson variety, which can be viewed as analogs of symplectic leaves in Poisson varieties. As an application we show that any quasi-lisse vertex algebra is a quantization of the arc space of its associated variety, in the sense that its reduced singular support coincides with the reduced arc space of its associated variety. We also show that the coordinate ring of the arc space of Slodowy slices is free over its vertex Poisson center, and the latter coincides with the vertex Poisson center of the coordinate ring of the arc space of the dual of the corresponding simple Lie algebra.
DA FUNCIONALIDADE DE UMA VACINA SIMBÓLICA
Authors: Mineiro Daniel , Pinto Paulo Mendes , Cavalcanti Carlos André
Published: October 2021

A sociedade atual vive segundo uma normatividade, que estrutura as noções de Pessoa, de comunicação e de Mundo. Impera o ideal da transparência e a ilusão de domínio da realidade. Contra a tirania do polimento, que não oferece resistências, propomos um antídoto: a vacina simbólica. Por meio de uma sensibilidade ao Outro e da meditação acerca das virtualidades do símbolo, apontamos para a necessidade do encontro com a realidade, na sua densidade. No acontecimento que é o encontro com o Outro, pela sabedoria, pela força e pelo eros - próprias do símbolo - surge a verdadeira vivência do Mundo, que é achar a densidade do real sempre próximo e distante. Verdadeiro antídoto que transforma a Pessoa ontologicamente.

Palavras-chave: Sensibilidade. Necessidade. Sabedoria. Força. Eros. Símbolo.

 

Sumary

Today´s society lives  according to normativity, which structures the notions of Person communication ant the World. The ideal of transparency and the ilusion of mastery of reality prevails. Against the tyranny of polishing, whick offers no resistance, we propose and antidote: the symbolic vaccine. Through a sensitivity to the Other and meditation on the symbol´s virtualities, we point to the need to encounter reality, in its density. In the event that is the encounter whit the Other, trought widom, strength and eros- typical of the symbol- the true experience of the World appears, which is to find the density of the real always near and distant. A true antidote that transforms the person ontologically.

Keywords: Sensiivity. Need. Wisdom. Strength. Eros. Symbol.
O OLHO DO ESPÍRITO
Authors: Barbosa Patrícia Lucchesi
Published: October 2021

No presente artigo pretendemos demonstrar que a filosofia é, para Platão uma ‘terapia da alma’, ao proporcionar a ordenação de seus movimentos, tal como uma espiral ascendente. Consideramos o termo movimento (kínesis), em sentido grego, não apenas o deslocamento no espaço, mas também a alteração dos estados qualitativos e as ações da alma. Para tal ordenação seja possível se faz necessário ativar na alma uma capacidade de visão de conjunto, tal como um ‘olho do espírito’, o noûs. A dialética é a metodologia proposta por Platão para que essa finalidade seja exequível, de tal modo que as potências superiores da alma sejam ativadas, especialmente a memória de sua origem imortal e divina. Para que alcancemos esse objetivo faremos inicialmente uma breve excursão pela cosmologia dos pré-socráticos e pela sabedoria popular a fim de evidenciar a universalidade do saber acerca da alma, para que, em seguida, possamos caracterizar a proposta da dialética em Platão, evidenciando o papel do noûs.

Palavras-chave: Alma. Dialética. Imortalidade, Noûs.

 

Abstract

In this article we intend to demonstrate that philosophy is, for Plato, a “therapy of the soul”, by providing ordering of its movements, as in an ascending spiral. We have considered the terminology movement (kínesis), on its Greek meaning, not only the displacement in space, but also the changing in qualitative states and the actions of the soul. For that ordering to be achieved it is necessary to activate in the soul an ability of joined vision, as a “spirit’s eye”, the noûs. Dialectics is the methodology proposed by Plato in order to make possible the execution of that goal, in a way that the upper potencies of the soul are able to be activated, especially memory and its immortal and divide origin. To accomplish that goal, we will at first take a brief tour of pre-Socratic cosmology and of folk wisdom in order to highlight the universality of the knowledge of the soul, and afterwards to characterize the proposition of Plato’s dialectics, highlighting the role of the nous

Keywords: Soul, Dialectics, Immortality, Noûs.
Modern Approaches to the Notion of Sources of Criminal Law in Post-Soviet Legal Systems
Authors:   VIPE FSIN Russia, SOFRONOVA S. A. , VOROB’EVA A. A. ,   VIPE FSIN Russia
Published: October 2021

The article discusses modern approaches to understanding the sources of the branch of criminal law in legal systems in the post-Soviet space. We analyze the influence of legal traditions and external factors on the transformation of approaches to the concept of sources of criminal law on the example of the legislation of various states. We conclude that there is a relatively uniform approach in the criminal law of the former USSR republics to the concept of sources of criminal law. We also identify the factors and conditions determining possible changes in the concept of sources of criminal law.
Collaborative Metaphor Analysis Research Methodology: A Retrospective Self-Study
Authors: Shaw Donita , Parsons Sue , Vasinda Sheri
Published: October 2021

The purpose of this manuscript is to explicate the metaphor analysis process we employed in a recent study to make this methodology more accessible to future researchers. To explain and demystify metaphor analysis as a method, we describe in detail the three rounds of data analysis leading to findings. We seek to make transparent the messiness and thoughtfulness of the refining process as well as the methodological rigor and trustworthiness. In the discussion that follows, researchers share experiences with and resulting insights into the methodology in hopes of providing future researchers with support for their own metaphor analysis work.
LOWERING THE INFLUENCE ON THE ENVIRONMENT - PROJECT OF CHANGING THE BUS FLEET IN GPP OSIJEK
Authors: Erceg Aleksandar , Kilic Zafer
Published: October 2021

Purpose: Public transport is one of the bigger causes of air pollution, but at the same time use public transport helps in lowering the use of personal transport and with that, it lowers the pollution and influence on the environment. Air pollution is significantly influencing the environment and the public transport companies are looking for different ways to reduce air pollution. Thus, the transport companies need to pay attention to their activities and modernization of the fleet to lower their influence on air pollution.

Design/Methodology/Approach: In the writing of this paper we used mainly desk research method for the literature review and case study method for presenting the project of the transport company.

Findings and implications: GPP Osijek has started a project of fleet modernization which consists of the purchase of 12 new modern city buses which have a lower influence on the environment regarding air pollution. Besides this company is making additional steps in reducing their influence on the environment and testing hybrid fueled buses. In the next period, authors recommend conducting research on environmental influence regarding air pollution and possibly lowering the noise pollution.

Limitations: This paper main limitation is that there are still no results in how much the influence on the environment has been lowered and this should be studied in the future.

Originality: This paper presents one of the first research studies about environmental management in public transport companies in Croatia.