bluuebunny/crossref_metadata_2025 huggingface dataset:
Global prevalence of polypharmacy among the COVID-19 patients: a comprehensive systematic review and meta-analysis of observational studies
Authors: Ghasemi Hooman , Darvishi Niloofar , Salari Nader , Hosseinian-Far Amin , Akbari Hakimeh , Mohammadi Masoud
Published: August 2022

Background

Polypharmacy has traditionally been defined in various texts as the use of 5 or more chronic drugs, the use of inappropriate drugs, or drugs that are not clinically authorized. The aim of this study was to evaluate the prevalence of polypharmacy among the COVID-19 patients, and the side effects, by systematic review and meta-analysis.

Methods

This study was performed by systematic review method and in accordance with PRISMA 2020 criteria. The protocol in this work is registered in PROSPERO (CRD42021281552). Particular databases and repositories have been searched to identify and select relevant studies. The quality of articles was assessed based on the Newcastle–Ottawa Scale checklist. Heterogeneity of the studies was measured using theI2test.

Results

The results of meta-analysis showed that the prevalence of polypharmacy in 14 studies with a sample size of 189,870 patients with COVID-19 is 34.6% (95% CI: 29.6–40). Studies have shown that polypharmacy is associated with side effects, increased morbidity and mortality among patients with COVID-19. The results of meta-regression analysis reported that with increasing age of COVID-19 patients, the prevalence of polypharmacy increases (p < 0.05).

Discussion

The most important strength of this study is the updated search to June 2022 and the use of all databases to increase the accuracy and sensitivity of the study. The most important limitation of this study is the lack of proper definition of polypharmacy in some studies and not mentioning the number of drugs used for patients in these studies.

Conclusion

Polypharmacy is seen in many patients with COVID-19. Since there is no definitive cure for COVID-19, the multiplicity of drugs used to treat this disease can affect the severity of the disease and its side effects as a result of drug interactions. This highlights the importance of controlling and managing prescription drugs for patients with COVID-19.
Association between cumulus cells—mRNA levels of AMHR2 and FSHR with oocyte maturity
Authors: Montazeri Fateme , Kalantar Seyed Mehdi , Fesahat Farzaneh , Sheikhha Mohammad Hasan , Omidi Marjan , Shafienia Hanieh , Hoseini Seyed Mehdi
Published: August 2022

Background

The gene expression of anti-Mullerian hormone receptor type 2 (AMHR2) and follicle stimulating hormone receptor (FSHR) in cumulus cells (CCs) isolated from mature and immature oocytes was studied as a possible non-invasive approach for determining oocyte maturity and quality. The CCs of 100 infertile women with different etiologic factors were subdivided into control (CCs from MII) and case (CCs from GV) group. Q-PCR was used to evaluate FSHR and AMHR2 mRNA expression levels in CCs from mature and immature oocytes.

Results

AMHR2 and FSHR genes are significantly overexpressed (4–6 fold) in CCs from immature relative to mature oocyte. The expression level of AMHR2 gene in terms of etiologic subgroups is significantly different (P value 0.000). FSHR mRNA expression levels in CCs show no significant difference regarding etiologic subgroups (P value 0.575).

Conclusion

It seems that determining the expression level of AMHR2 and FSHR genes in CCs could help to understanding molecular mechanism of oocyte maturation process.
Discussion on the environmental adaptability of weather-resistant measures for earthen sites in China
Authors: Wang Xudong , Zhang Bo , Guo Qinglin , Pei Qiangqiang
Published: August 2022

Earthen sites are important remains of past human societies. Weather-resistant measures comprise a major part of conservation efforts for earthen sites. Marked advancements in weather-resistant techniques have been made in recent years. Earthen sites are characterised by large numbers, large scales, various types, complex compositions, and diverse existing environments. Weather-resistant measures differ significantly in their environmental adaptability. The environmental adaptability of weather-resistant measures severely restricts further development and popularisation of weather-resistant technology at earthen sites. Based on the environmental and weathering characteristics of existing earthen sites in China, the consolidation and failure mechanisms of several weather-resistant measures (penetrating consolidation, sacrificial layers, soft capping, protective structures, and backfilling protection) were examined. The potential areas to increase the success of the different weather-resistant measures were obtained combined with the characteristics of various environmental boundaries.
The Anthropic (and Mis-) Principle revisited, Steven Weinberg in memoriam
Authors: Deser S.
Published: August 2022

I review the role and meaning of the Anthropic Principle, particularly in its relevance to particle physics as that subject evolves. This is neither a technical paper nor a resource letter, but rather an easy introduction.
Quantum tunneling decay due to a resonance state of negative energy and a decaying width
Authors: García-Calderón Gastón , Romo Roberto
Published: August 2022

By using an exact analytical formalism for quantum tunneling decay we show the existence of a regime of purely nonexponential decay for the survival probability in the full time interval and a propagating probability density along the external interaction region that evolves as a spreading process having no wavefront. This decaying regime follows from a complex pole of the propagator which in the wave number plane possesses an imaginary part larger than the corresponding real part, which implies a negative resonance energy and a decaying width, together with a dominant large overlap of the initial decaying state with the corresponding resonant state of the problem.
Dispersed Behavior and Perceptions in Assortative Societies
Authors: Frick Mira , Iijima Ryota , Ishii Yuhta
Published: August 2022

We formulate a model of social interactions and misinferences by agents who neglect assortativity in their society, mistakenly believing that they interact with a representative sample of the population. A key component of our approach is the interplay between this bias and agents’ strategic incentives. We highlight a mechanism through which assortativity neglect, combined with strategic complementarities in agents’ behavior, drives up action dispersion in society (e.g., socioeconomic disparities in education investment). We also suggest that the combination of assortativity neglect and strategic incentives may be relevant in understanding empirically documented misperceptions of income inequality and political attitude polarization. (JEL C78, D11, D31, D72, D82, D91)
The Rise of Pass-Throughs and the Decline of the Labor Share
Authors: Smith Matthew , Yagan Danny , Zidar Owen , Zwick Eric
Published: August 2022

We study the coevolution of the fall in the US corporate-sector labor share and the rise of business activity in tax-preferred pass-throughs. We find that reallocating activity to the form it would have taken prior to the Tax Reform Act of 1986 accounts for one-third of the decline in the corporate-sector labor share between 1978 and 2017. Our adjustments are concentrated among mid-market firms in services, magnifying the role of the manufacturing sector and superstar firms in driving the remaining decline in the labor share. Our findings highlight the importance of tax policy when measuring factor shares. (JEL D22, E25, H25, K34, L60, L80)
The relationship between choroidal thickness and axis length and corneal curvature in high myopia
Authors: Lu Hongwei , Guan Yongqing , Wei Guangchuan , Li Na
Published: August 2022

Objectives: To measure choroidal thickness (CT) in highly myopia eyes using enhanced depth imaging spectral-domain optical tomography (EDI SD-OCT) and explore the relationship between the CT and axial length (AL) and corneal curvature.

Methods: This study assessed 66 eyes of 33 patients with both eyes of high myopia (equivalent sphericity ≥-6D or AL≥26mm) who underwent treatment at the department of ophthalmology, fourth hospital of Hebei Medical University from August 2020 to August 2021(High-myopia group). The control group included 54 eyes from 27 healthy volunteers. The patients in the two groups were 18~40 years old. EDI SD-OCT was used to measure the CT of subfoveal choroidal thickness (SFCT) and CT from fovea to nasal and temporal sides at an interval of 500~2500μm. The intraocular pressure, diopter, ocular axis, corneal curvature, and CT were compared between the two groups. The correlation between CT, diopter and AL was measured by Pearson’s r.

Results: The diopter, AL, vertical corneal curvature, and CT in the high-myopia group were significantly higher than those in the control group (P<0.05). There was significant correlation between SFCT and AL in both groups (P<0.05). There was a negative correlation between AL and CT in high-myopia group (r=-0.395, P<0.05), and a positive correlation between AL and CT in control group (r=0.29, P<0.05). There was a weak correlation between AL and gender, intraocular pressure, and horizontal corneal curvature(P<0.05), and a negative correlation between AL and diopter (r=-0.861, P<0.001).

Conclusion: EDI SD-OCT can quantitatively measure the CT of high myopia. The CT of patients with high myopia was significantly thinner than that of the control group of the same age. There was a significant correlation between diopter, AL and CT, suggesting that AL is a parameter indicating the degree of myopia, and the change of CT may play a role in the occurrence and development of high myopia.

doi: https://doi.org/10.12669/pjms.38.7.6409

How to cite this:Lu H, Guan Y, Wei G, Li N. The relationship between choroidal thickness and axis length and corneal curvature in high myopia. Pak J Med Sci. 2022;38(7):1999-2004. doi: https://doi.org/10.12669/pjms.38.7.6409

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
"Περί θαυμασίων" στο έργο του Φιλοστράτου
Authors: Καραφωτιάς Αθανάσιος
Published: August 2022

Κεντρικό θέμα της συγκεκριμένης διατριβής συνιστούν αφενός η «ἀποδημία» του Απολλωνίου του Τυανέα, αμφιλεγόμενης προσωπικότητας του 1ου μεταχριστιανικού αιώνα, όπως αποδίδεται από τον Φλάβιο Φιλόστρατο στο έργο του «Τά ἐς τόν Ἀπολλώνιο Τυανέα» τον 3ο αιώνα, αφετέρου τα «θαυμάσια» που συναντά. Υποστηρίζεται ότι οι τόποι που παρουσιάζεται να επισκέπτεται (ο Απολλώνιος) αποτελούν προϊόν συνειδητής επιλογής του Φιλοστράτου, καθώς είναι ξεχωριστής ιστορικής και ηθικής σημασίας για τον ελληνισμό διαχρονικά. Επιπλέον, η θεία φύση του ιερού τους επισκέπτη επιβεβαιώνει και μεγεθύνει την αξία τους. Με αυτόν τον τρόπο, τονίζεται η πρωτοκαθεδρία του «θείου περιηγητοῦ» έναντι του παράγοντα «τόπος». Ομοίως λειτουργεί και η παρουσίαση των «θαυμασίων» κάθε λογής. Ωστόσο η προβολή αυτή εντάσσεται σε ένα πολύ ευρύτερων διαστάσεων σχέδιο: ο Φιλόστρατος, με σχέσεις στην αυλή των Σεβήρων, και κυρίως της δυναμικής Ιουλίας Δόμνας, ενδεχομένως μέλος του φιλολογικού της κύκλου, παρουσιάζει τον Απολλώνιο ως απεσταλμένο του θείου, αντιπαραβάλλοντάς τον με συγκεκριμένες θεότητες, κάποιες με σημαντικό ρόλο την δική του εποχή, με ημίθεους και ήρωες και τελικά, με τον Αλέξανδρο (τον Μέγα). Υποστηρίζεται ότι η αναμφίλεκτη, όπως αποδεικνύεται στο έργο, ανωτερότητα του Απολλωνίου οφείλεται στην θεία εύνοια προς αυτόν, ειδικότερα στην ξεχωριστή σχέση του με τον Ήλιο, του οποίου αναδεικνύεται σε απόστολο. Η ιερή αποστολή που φέρεται να του ανατίθεται άνωθεν στόχο έχει να προωθήσει τις ηλιολατρικές πεποιθήσεις της σεβήρειας δυναστείας, γνήσιου τέκνου της Ανατολής.
Survivable mobile telecommunication systems
Authors: Μυκονιάτη Μαρία
Published: August 2022

Επιβιώσιμα συστήματα είναι αυτά που έχουν την ικανότητα να διατηρούν τις υπηρεσίες τους λειτουργικές κατά την διάρκεια καταστροφών, αστοχιών, επιθέσεων κλπ. Ο βασικός στόχος αυτών των συστημάτων είναι η αντίσταση στην αποτυχία του συστήματος να παρέχει τις κρίσιμες υπηρεσίες του. Η παρούσα διατριβή περιγράφει αρχικά την έρευνα γύρω από τον ορισμό της επιβιωσιμότητας και των βασικών χαρακτηριστικών ενός επιβιώσιμου συστήματος. Στη συνέχεια, η έρευνα συνεχίζεται με τον καθορισμό των ιδιοτήτων που κάνουν ένα δίκτυο κινητής τηλεφωνίας επιβιώσιμο, έτσι όπως αυτές ορίζονται από το 3GPP Standard, και τη βιβλιογραφία. Δύο σημαντικές ελλείψεις σχετικά με τα χαρακτηριστικά ενός επιβιώσιμου συστήματος εντοπίζονται, και αναπτύσσονται δύο μεθοδολογίες που καλύπτουν αυτές τις ελλείψεις και ορίζονται ως απαραίτητες προϋποθέσεις που θα πρέπει να ληφθούν υπόψιν κατά την ανάπτυξη τέτοιων συστημάτων. Στη συνέχεια, η έρευνα ολοκληρώνεται με την ανάπτυξη της ζητούμενης μεθοδολογίας (SDLC) για την κατασκευή επιβιώσιμων δικτύων κινητής τηλεφωνίας. Η εφαρμογή της μεθοδολογίας γίνεται στη μελέτη περίπτωσης δικτύων 4ης γενιάς (4G LTE Networks) ώστε να διερευνηθεί η αποτελεσματικότητα της σε σχέση με την προϋπάρχουσα μεθοδολογία που ακολουθείται από τις εταιρίες ανάπτυξης συσκευών δικτύων κινητής τηλεφωνίας. Τέλος μία ποσοτική και ποιοτική ανάλυση των αποτελεσμάτων παρουσιάζεται ώστε να φανούν τα αποτελέσματα της απόδοσης της προτεινόμενης μεθοδολογίας.
A Helpful Guide for Parents and Guardians of People on the Autism Spectrum Disorder - Knowing Your Main Rights
Authors: Masoura Photini , Skitsou Alexandra , Dre Marianna , Charalambous Georgios
Published: August 2022

Autism is a serious developmental disorder that affects people throughout their lives, affecting their perception, thinking and behavior. It has been observed that there is a lack of information regarding the rights of parents and guardians of children on the autism spectrum, especially those of vulnerable social groups. A short guide was written in order to inform the parents and guardians about their rights.  Furthermore, a bibliographic review of the international, European and Greek legislation framework was carried out and we came to the conclusion that there is an extensive legislation framework for the protection of the rights of individuals on the autism spectrum and their parents.
Turkey's Energy Strategic Planning in the Eastern Mediterranean: Business Planning – Challenges – Adjustments
Authors: Kanellopoulos Anastasios Nikolaos , Galanis Konstantinos
Published: August 2022

This paper attempts to describe Turkey's energy strategy, through an approach of its strategic position, energy needs and policies. This analysis presents a modern approach to strategic analysis that concerns a country, as it uses models of international policy, business and energy analysis, which are mainly utilized in business sector of trade and energy. The combination of these models leads to a better and in-depth understanding of the Turkish political and economic reality, which determines the development and evolution of the Turkish energy strategy.
Strategic Social Media Management in Conflict Zones through the Analysis of the Intelligence Cycle: Lessons Learned from the Russo-Ukrainian Conflict
Authors: Kyrgos Zisis
Published: August 2022

Social media have become an important aspect of everyday life, especially in the western world. Through the analysis of the Intelligence Cycle and the social media communication process, it is possible to determine how social media are integrated into the intelligence process, namely during the data collection phase, and what types of intelligence vulnerability emerge, namely SIG.INT. and O.S.INT. type vulnerabilities. The recent events of the Russo-Ukrainian conflict have shown that the uneducated use of social media, by civilians and military personnel alike, poses a serious threat to national security in times of conflict. Educating the general public on matters of operations security could be vital to safeguarding national security, a process which could be aided by social media platforms’ moderators and AI technology.
Μια «Αρκτική Στρατηγική» για την Ελλάδα; Χαράσσοντας το Μονοπάτι από τη Μεσόγειο στον Πόλο
Authors: Τσιουβαλάς Απόστολος
Published: August 2022

Το εάν η Ελλάδα επηρεάζεται από τις αλλαγές που συμβαίνουν στην Αρκτική παραμένει πέρα από κάθε αμφισβήτηση. Το ερώτημα έγκειται στο εάν η Ελλάδα θα πρέπει σταδιακά να αυξήσει την εμπλοκή της στις υποθέσεις της Αρκτικής και τελικά να αναπτύξει μια σχετική στρατηγική πολιτική για την περιοχή. Η επί του παρόντος Σύνοψη Πολιτικής στοχεύει στη διατύπωση της υπάρχουσας σχέσης της Ελλάδας με την Αρκτική πραγματικότητα και διερευνά τα κύρια κίνητρα που μπορεί να οδηγήσουν στη διαμόρφωση μιας πιθανής ελληνικής πολιτικής για την Αρκτική στο μέλλον. Αφού αναπτύξει το υπάρχων καθεστώς του ενδιαφέροντος της Ελληνικής Δημοκρατίας για την Αρκτική, η σύντομη αυτή έρευνα αναζητά στρατηγικές οδούς για την υπέρβαση των συνεχιζόμενων φραγμών και τη διασφάλιση των συμφερόντων της χώρας στην περιοχή.
Attitudes toward and knowledge of collaboration of dental and medical practice among medical students in Southern India: a cross-sectional questionnaire survey
Authors: Atul Kumar Harshit , Uppoor Ashita , Kadakampally David , Unnikrishnan B , Mithra Prasanna
Published: August 2022

Background:

   Enhancing oral health care services provided through inter-professional collaboration between medical and dental practitioner is important, and even essential. The purpose of this study is to assess the attitude toward and knowledge of medical-dental collaborative practice among medical students attending colleges in Southern India.

Methods:

      A cross sectional questionnaire survey was conducted among medical students and interns of medical colleges in coastal South India with prior information and permission. The questionnaire consisted of 11 questions to assess attitude toward and knowledge of medical-dental collaborative practice. The demographic backgrounds of participants were also recorded. Chi square test was employed for data analysis. The responses obtained were correlated with age, gender and year of study of participants using Pearson’s correlation test

Results:

       A total 250 questionnaires were distributed and 234 responses were appropriately completed. Most of the students agreed that oral health was an integral part of systemic health, however participants disagreed on attending compulsory rotation in dentistry at a statistically significant level (p<0.05), moreover participants did not agree with physicians having an active role in motivating their patients for regular dental check-up. 82% of the medical students believe that dental check-up should be included in health packages under health insurance. A statistically significant (p<0.05) difference was observed among 3 rd year & 4 th year students and interns and also it was found that female students provided more positive responses towards medical-dental collaboration.

Conclusions:

       Even though medical students showed fairly positive attitudes and knowledge towards dentistry, the analysis within the study groups showed that knowledge and attitudes regarding the collaborative practice worsened over the academic years among the medical students. In order to destigmatize and foster interprofessional collaboration which would contribute to higher resource efficiency and the standard of care, continuing education in both the disciplines would be highly beneficial.
Case Report: Left atrial myxoma with confirmed Delta variant COVID-19 infection, “to treat or withhold”
Authors: Nasution Sally Aman , Tenda Eric Daniel , Ginanjar Eka , Indrasari Nuri Dyah , Pradipta Ariel , Yulianti Mira , Muhadi Muhadi , Susanto Anindya Pradipta , Putra Muhammad Arza , Asaf Moses Mazmur , Pitoyo Ceva Wicaksono , Subekti Imam , Syam Ari Fahrial , Liastuti Lies Dina
Published: August 2022

Primary cardiac tumors (PCTs) are extremely rare entities. More than half of PCTs are benign, with myxoma being the most common tumor. Generally, simple tumor resection is the treatment of choice for benign PCTs since it has promising results that yield low complication and recurrence rates. However, in the COVID-19 pandemic era, the mitigation protocols and/or concurrent COVID-19 infection should be taken into account in patient management for the best overall outcome. To our knowledge, this is the first case report of a patient with a left atrial myxoma and systemic embolism complication in the form of an ischemic stroke, with a concurrent confirmed COVID-19 delta variant infection.
Search engine optimisation (SEO) strategy as determinants to enhance the online brand positioning
Authors: Ahmad Umar Faruq , Mahdee Junainah , Abu Bakar Normazalila
Published: August 2022

Background - Marketers face evolution of online brand positioning marketing strategy due to changes of search engine algorithm that affects the reaching out of brands to potential internet users. Brand owners realise that to be relevant in modern market, they need to transition and focus more into online market. However, many brand owners have ignored the power of search engine optimisation (SEO) strategy for attracting the online market, which is highly competitive and faces rapid changes.  A brand can be considered as old fashioned if it does not utilise the SEO as their marketing strategy, in penetrating the online marketplace. Various studies have analysed factors that can enhance the persistency of using the SEO strategy, however gaps remain regarding the relationship of this strategy with the online brand positioning. The main aim of this study was to identify the persistency of using the SEO strategy including the niche point of differentiation, valuable content, targeted keyword and scalable link building, as the determinants that enhance the success of online brand positioning.

Methods – This study applies quantitative design using online survey to gather information from the online business entrepreneurs. The survey questionnaire was arranged to focus on the use of SEO as a new way to strategies online business.

Results – Based on the results of this study, most online entrepreneurs have somewhat realised the effects of using the SEO strategy to enhance effectiveness of online brand positioning.

Conclusion – This research provides insights on the importance of SEO strategy in online business positioning. It is hoped that the online entrepreneurs will take the SEO strategy into consideration in the positioning of their brand in the marketplace.
A spatio-temporal atlas of the developing fetal brain with spina bifida aperta
Authors: Fidon Lucas , Viola Elizabeth , Mufti Nada , David Anna L. , Melbourne Andrew , Demaerel Philippe , Ourselin Sébastien , Vercauteren Tom , Deprest Jan , Aertsen Michael
Published: August 2022

Background: Spina bifida aperta (SBA) is a birth defect associated with severe anatomical changes in the developing fetal brain. Brain magnetic resonance imaging (MRI) atlases are popular tools for studying neuropathology in the brain anatomy, but previous fetal brain MRI atlases have focused on the normal fetal brain. We aimed to develop a spatio-temporal fetal brain MRI atlas for SBA.

Methods: We developed a semi-automatic computational method to compute the first spatio-temporal fetal brain MRI atlas for SBA. We used 90 MRIs of fetuses with SBA with gestational ages ranging from 21 to 35 weeks. Isotropic and motion-free 3D reconstructed MRIs were obtained for all the examinations. We propose a protocol for the annotation of anatomical landmarks in brain 3D MRI of fetuses with SBA with the aim of making spatial alignment of abnormal fetal brain MRIs more robust. In addition, we propose a weighted generalized Procrustes method based on the anatomical landmarks for the initialization of the atlas. The proposed weighted generalized Procrustes can handle temporal regularization and missing annotations. After initialization, the atlas is refined iteratively using non-linear image registration based on the image intensity and the anatomical land-marks. A semi-automatic method is used to obtain a parcellation of our fetal brain atlas into eight tissue types: white matter, ventricular system, cerebellum, extra-axial cerebrospinal fluid, cortical gray matter, deep gray matter, brainstem, and corpus callosum.

Results: An intra-rater variability analysis suggests that the seven anatomical land-marks are sufficiently reliable. We find that the proposed atlas outperforms a normal fetal brain atlas for the automatic segmentation of brain 3D MRI of fetuses with SBA.

Conclusions: We make publicly available a spatio-temporal fetal brain MRI atlas for SBA, available here: https://doi.org/10.7303/syn25887675. This atlas can support future research on automatic segmentation methods for brain 3D MRI of fetuses with SBA.
Project Performance Through an Occupational and Health Safety Management System at an Office Building Project in Lampung Indonesia
Authors:   Faculty Economic and Business, Universitas Mercu Buana, Jakarta Indonesia, Purwanto Agustinus Hariadi Djoko , Hartono Sri
Published: August 2022

Abstract. A project contractor may fail to deliver on time, quality, and budget expectations due to incidents resulting in injuries and fatalities, as well as asset damage, elevated costs, and delays. This research aims to gauge a business improvement model on OHS (occupational and health safety) performance developed from operation standardization, communication, competency, hazard identification, and management commitment. Commitment initiates risk analysis for developing standardization, communication, and competency to achieve OHS performance. The present case study concerns a contractor establishing a local government office building in Lampung. It takes 100 respondents as a sample out of the 124 personnel in this construction project, relying on a quantitative method which processes data via PLS software to obtain the direction and magnitude of variable influences. OHS policy exhibits influence at 0.587 on HIRADC (Hazard Identification Risk Analysis and Determining Control); it affects standardization, competency, and communication at the values of 0.704, 0.450, and 0.300. The three variables then simultaneously affect OHS performance at the values of 0.540, 0.065, and 0.116. OHS performance affects business performance at a value of 0.384. Keywords: Hazard identification; ohs performance; business performance; competency; communication; management commitment
The Effect of Transformational Leadership on Business Performance Through Business Agility Expedition Services
Authors:   Fakultas Ekonomi dan bisnis, Universitas Pancasila, Jakarta Indonesia, Permana Erwin
Published: August 2022

Abstract. The Covid-19 pandemic has put pressure on various business sectors because social distancing policies have resulted in significantly reduced interactions between humans. So expedition services are the choice to meet most human needs. So that the shipping service business is a business that is experiencing rapid development during the pandemic. This study aims to analyze: 1) the influence of transformational leadership on the business performance of courier service, 2) the influence of transformational leadership on the business agility of courier service, 3) the influence of business agility on the business performance of courier service. The analysis technique used Structural Equation Model (SEM) with SmartPLS. The data was collected through the dissemination of questionnaires. Research respondents are shipping service companies with the criteria for joining the Association of Indonesian Express, POS and Logistics Delivery Service Companies (ASPERINDO). The results of the analysis showed that transformational leadership affects performance; transformational leadership affects business agility, and agility affects the company's performance. The results of the statistic test showed that all constituent dimensions of the model are at a high level. It means that the results of this study confirmed that the Covid-19 pandemic becomes a blessing for the courier service business. People's habits of shopping online during the pandemic are believed to not be significantly reduced even though the pandemic is over. This research recommends courier service companies maintain market agility and operational agility by improving digital capacity. In the future, research that involves the digital capability of the courier service business is needed during the pandemic. Keywords: Transformational leadership, agility, performance, courier service, COVID-19
REFLETINDO SOBRE EDUCAÇÃO EM SAÚDE EM TEMPOS DE PANDEMIA - RABISCOS, RISCOS E DISCRETAS OUSADIAS
Authors: Lopes Marcia Raposo , Rodrigues Heliana De Barros Conde
Published: August 2022

Este ensaio tem o objetivo de problematizar os efeitos e movimentos produzidos pelas ações de educação em saúde quando massificadas, em especial, no contexto da pandemia de covid-19. Para tanto, incialmente, ele retoma o histórico do desenvolvimento das atividades de educação em saúde no Brasil, buscando entender os diferentes formatos que ela assumiu, e assume ainda hoje, nas políticas e nos serviços públicos de saúde. A educação popular em saúde, que tem como base teórica os trabalhos de Paulo Freire aparece, então, como um importante desdobramento destas atividades em nosso país, a partir dos anos de 1980. As análises que se seguem utilizam os trabalhos de Michel Foucault notadamente os conceitos de biopolítica e governamentalidade para pensar criticamente, este processo, aprofundando o debate sobre o tema no contexto atual, imerso na pandemia da covid-19. Mesmo diagnosticando o lugar paradoxal que ocupa a educação em saúde no interior da saúde pública e da governamentalidade neoliberal, procura-se estabelecer um diálogo a partir dela, no intuito de facultar a invenção de novos sentidos, a produção de novas realidades.
SEMİOTİC ANALYSİS OF COSTUMES OF QUEEN ELİZABETH II OF “THE CROWN” SERİAL
Authors: KAHRAMAN Zeynep , ALP Kafiye Özlem
Published: August 2022

Today, people, societies, and states use different indicators when they express their thougths, political visions and official ideologies. Internet and tv serials play significant roles in transporting messages sent by indicators. Thus, an incredible infuensial power is established through these serials. Presidents or high level administrators manage perception process to oriente people by using various means of mas communication. Public administrators are able to use media in different ways for convincing and informing people at the rate and topics that ruling power wants, by targetting to affect their attitudes, to establish perceptions, and to manage thier expectations, to catch these targets in particularly designed serials, emotional forms such as subject, image, negative and positive content, horror, joy, heroism, bravery, and patriotism. One of such serials that recently followed densly is “The Crown” expressing the life of “Quin Elizabeth II”. Kingdom family and particularly Quin Elizabeth II is both political and popular figure. On the other hand, Quin Elizabeth II is a beloved and followed character. Therefore, her messages given to people by her clothes and behaviors are closely followed. In this study, a semiotic analysis on costumes of “Quine Elizabeth II” as a real historical character and prime role in the serial of “The Crown” prepare by Peter Morgan for Left Bank and Netflix and produced by Sony Pictures, is aimed. Although “The Crown” serial an upper indicator, within this indicator, meaning codes have been focused on costumes of “Quine Elizabeth II” character and tried to realize a reading.
Anlatıda İnteraktiflik Olgusu: Farklı Söylem Biçimlerinde ‘Gerçek (Actual) İnteraktivite’ ve ‘Algısal (Perceived) İnteraktivite’ Düzeylerinin Yansımaları
Authors: UÇAR KARTOĞLU Neslihan , GULİYEV Ziyad , ÖZERDEN Emre
Published: August 2022

Bu araştırma ise anlatı geleneğindeki belirli alanların tarihsel gelişimlerle paralel dönüşümünü ve gelişimini ilgili örnekler üzerinden değerlendirerek kavramsal bir çerçeve sunmayı amaçlamaktadır. Bu bağlamda çalışma interaktiflik olgusunu iki boyutlu bir bakış açısıyla değerlendirmektedir: “algısal interaktiflik”, “gerçek interaktiflik”. Çalışma kapsamında bu iki interaktiflik boyutu sinema, tiyatro ve sergileme alanlarında incelenmiş ve anlatı yöntemlerindeki dijitalleşme düzeylerinin de bu alanlardaki interaktiflik boyutlarına etkileri taranmıştır.

Bulgular her üç alanda da iki interaktif boyutun etkin olduğunu, ancak dijital yöntemlerin kullanımlarının yaygınlaşması ile bu iki boyutun farklı uygulamalarla kullanıldığını göstermiştir. Bununla birlikte dijitalleşme süreci ile kültür endüstrisinin temel alanları alan sinema, tiyatro ve sergileme alanlarının anlatı pratiklerinde “gerçek interaktiflik” boyutu daha etkin kullanmaya başladığı gözlemlenmiştir.
ESTUDO DA INTENSIDADE SOLAR PARA DIMENSIONAMENTO DE SISTEMAS FOTOVOLTAICOS
Authors: Silva Almeida Karoline
Published: August 2022

Durante os últimos anos difundiu-se uma preocupação ambiental em busca por fontes alternativas de energia que promovam o uso racional dos recursos energéticos, redução dos impactos ambientais e ampliação de energia em áreas isoladas.
PANORAMA HISTÓRICO DOS ESTUDOS EM ESTRELAS E GALÁXIAS WOLF-RAYET
Authors: Boaventura Ricardo Macedo Borges
Published: August 2022

A radiação recebida de uma determinada fonte pode ser caracterizada pela sua intensidade a uma determinada frequência. O espectro desta fonte é dado pela dependência que a intensidade apresenta com relação à frequência.
Simulation analysis of high-order high-duty-cycle surface gratings
Authors: Tian Kun , Zou Yonggang , Shi Linlin , Zhang He , Xu Yingtian , Fan Jie , Tang Hui , Ma Xiaohui
Published: August 2022

High-order surface grating distributed feedback lasers are known to operate with a fundamental mode, narrow linewidth, high power, and high slope efficiency. The adoption of high-order surface gratings can avoid epitaxial re-growth necessary for the fabrication of conventional buried gratings, which simplifies the fabrication process and reduces device cost. It is essential for the design and optimization of device structure to clarify the influence of the change of grating structure parameters on grating characteristics (coupling and loss). Based on Lumerical’s Mode Solutions and multiple grating samples, we evaluated the coupling and loss coefficients of surface gratings as a function of duty cycle, order, and V-groove topography. As the order increases, the duty cycle corresponding to the peak value of the grating coupling coefficient increases gradually and approaches one. The grating coupling coefficient decreases with increasing order but increases at some specific orders. At high duty cycles, the width of the grating groove corresponding to the peak of the coupling coefficient remains substantially in the range of 100–150 nm, which is close to the length of a quarter-wavelength in the grating groove filling material. Regarding the grating groove morphology, the fabrication difficulty of the V-shaped groove grating is obviously less than that of the rectangular groove grating, but its coupling coefficient is slightly smaller than that of the rectangular shaped groove grating of the same depth. The larger the V-shaped groove width, the smaller the peak coupling coefficient and the corresponding sidewall inclination will be. Losses decrease with increasing duty cycle and decreasing sidewall inclination of the V-groove.
Terahertz image enhancing based on the physical model and multiscale retinex algorithm
Authors: Mao Qi , Zhu Yunlong , Liu Jingbo
Published: August 2022

To settle the terahertz (THz) image degradation problem, we propose an effective enhancement method based on the physical model and multiscale retinex (MSR) algorithm. The overall enhancing process involves two parts: reconstruction and enhancement. First, the original THz images are reconstructed by a mathematical model, which is built and considered the THz absorption variate and Gaussian distribution of the beam. Then, the original images are processed by the proposed algorithm, which combines the atmospheric scattering model and optimized MSR algorithm. The proposed algorithm not only recovers the image scene radiance and removes haze, but also can make a compromise of the dynamic range of gray scale and edge enhancement of the image. Results on a variety of THz images demonstrate our method can effectively improve the quality of THz images and retain sufficient image details.
Intense infrared lasers for strong-field science
Authors: Chang Zenghu , Fang Li , Fedorov Vladimir , Geiger Chase , Ghimire Shambhu , Heide Christian , Ishii Nobuhisa , Itatani Jiro , Joshi Chandrashekhar , Kobayashi Yuki , Kumar Prabhat , Marra Alphonse , Mirov Sergey , Petrushina Irina , Polyanskiy Mikhail , Reis David A. , Tochitsky Sergei , Vasilyev Sergey , Wang Lifeng , Wu Yi , Zhou Fangjie
Published: August 2022

The advent of chirped-pulse amplification in the 1980s and femtosecond
Ti:sapphire lasers in the 1990s enabled transformative advances in
intense laser–matter interaction physics. Whereas most of experiments
have been conducted in the limited near-infrared range of 0.8–1 μm,
theories predict that many physical phenomena such as high harmonic
generation in gases favor long laser wavelengths in terms of extending
the high-energy cutoff. Significant progress has been made in
developing few-cycle, carrier-envelope phase-stabilized,
high-peak-power lasers in the 1.6–2 μm range that has laid the
foundation for attosecond X ray sources in the water window. Even
longer wavelength lasers are becoming available that are suitable to
study light filamentation, high harmonic generation, and laser–plasma
interaction in the relativistic regime. Long-wavelength lasers are
suitable for sub-bandgap strong-field excitation of a wide range of
solid materials, including semiconductors. In the strong-field limit,
bulk crystals also produce high-order harmonics. In this review, we
first introduce several important wavelength scaling laws in
strong-field physics, then describe recent breakthroughs in short-
(1.4–3 μm), mid- (3–8 μm), and long-wave (8–15 μm) infrared laser
technology, and finally provide examples of strong-field applications
of these novel lasers. Some of the broadband ultrafast infrared lasers
will have profound effects on medicine, environmental protection, and
national defense, because their wavelengths cover the water absorption
band, the molecular fingerprint region, as well as the atmospheric
infrared transparent window.
Transmission and generation of arbitrary W states via an optomechanical interface
Authors: Wang Rui-Xia
Published: August 2022

We propose a universal and nontrivial scheme to transmit and generate an arbitrary W state for multiple cavities via an optomechanical interface. In transmission and generation processes, high fidelity can be obtained by optimizing the time-dependent coupling strengths between the cavities and the mechanical resonator. With a group of optimal couplings, an arbitrary entangled W state in the multipartite system can be mapped to the pulse shape of a single photon and transmitted out of the system. In the time reversal process, an arbitrary W state can be generated with an incident single photon with a certain pulse shape. The functions of the optimal couplings, which are used for both transmission and generation processes, only depend on the parameters of the system, which does not change with the arbitrary entangled W states and the pulse shape of the single photons.
High-energy and high-average-power two-channel Yb:YAG amplifier with passive coherent combining
Authors: Kuznetsov Ivan , Chizhov Sergey , Palashov Oleg
Published: August 2022

A two-channel laser amplifier with passive coherent combining based on Yb:YAG active elements with bright diode end pumping was developed. The pulse energy limits of a one-channel scheme are investigated, and the ability to double pulse energy in the two-channel scheme is demonstrated. 10 mJ pulse energy at a repetition rate of 1.5 kHz and 5 mJ at 6 kHz simultaneously with high gain and perfect beam quality at coherent combining efficiency over 97% was achieved.
150 Gbit/s 1 km high-sensitivity FSO communication outfield demonstration based on a soliton microcomb
Authors: Jia Shuaiwei , Xie Zhuang , Shao Wen , Wang Yang , He Yuanchen , Zhang Dongquan , Liao Peixuan , Wang Weiqiang , Gao Duorui , Wang Wei , Xie Xiaoping
Published: August 2022

A high-sensitivity and large-capacity free space optical (FSO) communication scheme based on the soliton microcomb (SMC) is proposed. Using ultra-large bandwidth stabilized SMC with a frequency interval of 48.97 GHz as the laser source, 60 optical wavelengths modulated by 2.5 Gbit/s 16-Pulse position modulation (PPM) are transmitted in parallel. A corresponding outfield high-sensitivity 150 Gbit/s FSO communication experiment based on the SMC was carried out with 1 km space distance. Our experimental results show that the best sensitivity of the single comb wavelength which has higher OSNR can reach −52.62 dBm, and the difference is only 1.38 dB from the theoretical limit under the BER of 1 × 10−3 without forward error correction (FEC). In addition, at BER of 1 × 10−3, 16-PPM has a higher received sensitivity of 6.73dB and 3.72dB compared to on-off keying (OOK) and differential phase shift keying (DPSK) respectively. Meanwhile, taking the advantage of multi-channel SMC, 60 × 2.5 Gbit/s can achieve 150 Gbit/s large-capacity free-space transmission. For comparison, commercially available single-wavelength laser based FSO communication system have also been performed in the outfield. The outfield experimental results demonstrated the feasibility of high-sensitivity, large-capacity PPM FSO communication based on SMCs and provided a new perspective for the future development of large-capacity, long-haul FSO communication.
Arbitrary distance measurement without dead zone by chirped pulse spectrally interferometry using a femtosecond optical frequency comb
Authors: Niu Qiong , Zheng Jihui , Cheng Xingrui , Liu Junchen , Jia Linhua , Ni Lingman , Nian Ju , Zhang Fumin , Qu Xinghua
Published: August 2022

We demonstrate an arbitrary distance measurement method by chirped pulse spectrally interferometry (CPSI) using femtosecond optical frequency comb (OFC). In this paper, the chirped fiber Bragg grating (CFBG) is used to investigate the mapping relationship between displacement and the center frequency of the chirped spectral interferogram. We overcome the direction ambiguity of dispersive interferometry (DPI) ranging and expand the range of distance measurement to 18 cm. Besides, we achieve a full range of dead-zone free ranging by introducing a variable optical delay line (VODL). And through principles simulation and experiment, it is demonstrated that the measurement accuracy is 12 µm in comparison with an incremental He–Ne laser interferometer and the minimum Allen deviation is 52 nm at an average time of 1.76 ms. Similarly, in the experiment with long-distance of ∼30m, the accuracy reaches 20 µm, and 2.51 µm repeatability is achieved under harsh environment.
Detection limit analysis of optical fiber sensors based on interferometers with the Vernier-effect
Authors: Li Yulong , Li Yanhui , Liu Yi , Li Yan , Qu Shiliang
Published: August 2022

Vernier-effect has been widely employed in interferometer-based optical fiber sensors to improve the sensitivities greatly. However, the influence of the Vernier-effect on detection limit (DL) that is more important for evaluating the actual performance of the sensor has not been discussed. Two gas pressure fiber sensors (a typical Fabry-Perot interferometer-based sensor and a Vernier sensor) are used to compare the DL of them by experiments. Both the theoretical analysis and the experimental results show that, though the Vernier-effect magnifies the spectrum shift sensitivity, it also magnifies the value of the smallest detectable wavelength shift. As a result, the actual DL of the sensor is not improved by employing the Vernier-effect. If the contrast ratio of the Vernier envelope is not optimized enough for most of the reported sensors, the DL can even degenerate greatly.
Hybrid aluminum nitride and silicon devices for integrated photonics
Authors: Xu Zihan , Zhang Yong , Shen Jian , Dong Yihang , Wu Liying , Xu Jian , Su Yikai
Published: August 2022

Aluminum nitride has advantages ranging from a large transparency window to its high thermal and chemical resistance, piezoelectric effect, electro-optic property, and compatibility with the complementary metal-oxide-semiconductor fabrication process. We propose a hybrid aluminum nitride and silicon platform for integrated photonics. Hybrid aluminum nitride–silicon basic photonic devices, including the multimode interferometer, Mach–Zehnder interferometer, and micro-ring resonator, are designed and fabricated. The measured extinction ratio is > 22 dB and the insertion loss is < 1 dB in a wavelength range of 40 nm for the Mach–Zehnder interferometer. The extinction ratio and intrinsic quality factor of the fabricated micro-ring resonator are > 16 dB and 43,300, respectively. The demonstrated hybrid integrated photonic platform is promising for realizing ultralow-power optical switching and electro-optic modulation based on the piezoelectric and electro-optic effects of aluminum nitride thin films.
Reconstructing the course of the COVID-19 epidemic over 2020 for US states and counties: Results of a Bayesian evidence synthesis model
Authors: Chitwood Melanie H. , Russi Marcus , Gunasekera Kenneth , Havumaki Joshua , Klaassen Fayette , Pitzer Virginia E. , Salomon Joshua A. , Swartwood Nicole A. , Warren Joshua L. , Weinberger Daniel M. , Cohen Ted , Menzies Nicolas A.
Published: August 2022

Reported COVID-19 cases and deaths provide a delayed and incomplete picture of SARS-CoV-2 infections in the United States (US). Accurate estimates of both the timing and magnitude of infections are needed to characterize viral transmission dynamics and better understand COVID-19 disease burden. We estimated time trends in SARS-CoV-2 transmission and other COVID-19 outcomes for every county in the US, from the first reported COVID-19 case in January 13, 2020 through January 1, 2021. To do so we employed a Bayesian modeling approach that explicitly accounts for reporting delays and variation in case ascertainment, and generates daily estimates of incident SARS-CoV-2 infections on the basis of reported COVID-19 cases and deaths. The model is freely available as the covidestim R package. Nationally, we estimated there had been 49 million symptomatic COVID-19 cases and 404,214 COVID-19 deaths by the end of 2020, and that 28% of the US population had been infected. There was county-level variability in the timing and magnitude of incidence, with local epidemiological trends differing substantially from state or regional averages, leading to large differences in the estimated proportion of the population infected by the end of 2020. Our estimates of true COVID-19 related deaths are consistent with independent estimates of excess mortality, and our estimated trends in cumulative incidence of SARS-CoV-2 infection are consistent with trends in seroprevalence estimates from available antibody testing studies. Reconstructing the underlying incidence of SARS-CoV-2 infections across US counties allows for a more granular understanding of disease trends and the potential impact of epidemiological drivers.