bluuebunny/crossref_metadata_2025 huggingface dataset:
Μουσείο και κοινό
Authors: Φουρλίγκα Ευαγγελία
Published: September 2024

Η παρούσα διατριβή εντάσσεται στις μελέτες επισκεπτών μουσείων. Σκοπός της είναι να συζητηθεί η αξιολόγηση εκπαιδευτικών δράσεων και ελεύθερων σχολικών επισκέψεων σε μουσειακό περιβάλλον. Για τη διεξαγωγή της έρευνας επιλέχτηκε το Μουσείο Βυζαντινού Πολιτισμού ως μελέτη περίπτωσης, καθώς πρόκειται για ένα μεγάλο δημόσιο μουσείο, με πολύχρονη εκπαιδευτική δράση και καταγεγραμμένη εκπαιδευτική πολιτική. Από τις ομάδες κοινού που επισκέπτονται το Μουσείο επιλέχτηκαν οι σχολικές ομάδες, που είναι η σημαντικότερη ομάδα στην οποία στοχεύει το Τμήμα Εκπαίδευσης του Μουσείου. Η έρευνα διεξήχθη με ποσοτικές και ποιοτικές μεθόδους. Συγκεκριμένα, πραγματοποιήθηκε ολική αξιολόγηση με τη χρήση ερωτηματολογίων για δύο από τις πιο πρόσφατες εκπαιδευτικές δράσεις του Μουσείου από μαθητές/μαθήτριες πρωτοβάθμιας και δευτεροβάθμιας εκπαίδευσης και τους/τις συνοδούς εκπαιδευτικούς τους και αξιολόγηση της εμπειρίας επίσκεψής τους. Επίσης, καταγράφηκε με ερωτηματολόγια η εμπειρία της απλής/ελεύθερης επίσκεψης στο Μουσείο από μαθητές/μαθήτριες πρωτοβάθμιας και δευτεροβάθμιας εκπαίδευσης και τους/τις συνοδούς εκπαιδευτικούς τους και ακολούθησε σύγκριση ανάμεσα στους δύο διαφορετικούς τρόπους επίσκεψης. Επιπλέον, καταγράφηκε με τη μέθοδο της παρατήρησης η εμπειρία της επίσκεψης μαθητών/μαθητριών και εκπαιδευτικών δευτεροβάθμιας εκπαίδευσης που υλοποιούν απλή επίσκεψη στο μουσείο. Στα συμπεράσματα της έρευνας συνεισέφεραν σημαντικά οι συνεντεύξεις του προσωπικού φύλαξης, ως ακούσιων παρατηρητών των επισκεπτών του Μουσείου. Σε σχέση με το κύριο ερευνητικό ερώτημα, εάν επηρεάζεται η εμπειρία επίσκεψης μαθητών/μαθητριών και εκπαιδευτικών στο Μουσείο από το είδος της επίσκεψης που πραγματοποιούν, τα αποτελέσματα της έρευνας έδειξαν ότι οι μαθητές και οι μαθήτριες που συμμετέχουν στις εκπαιδευτικές δράσεις του Μουσείου, αποκτούν μια πολύ θετική εμπειρία μουσειακής επίσκεψης. Οι απλές επισκέψεις που πραγματοποιούνται χωρίς καμία προετοιμασία και χωρίς στοχοθεσία από την πλευρά των εκπαιδευτικών, έχουν ως αποτέλεσμα οι μαθητές/μαθήτριες να χάνουν γρήγορα το ενδιαφέρον τους για το μουσείο και τα εκθέματα. Όταν υπάρχει διαμεσολάβηση μεταξύ μαθητών/μαθητριών και αντικειμένων η εμπειρία μπορεί να είναι θετική. Η επιμόρφωση των εκπαιδευτικών σε θέματα Μουσειακής Εκπαίδευσης και η ουσιαστική συνεργασία Μουσείου και Σχολείου θα μπορούσε να οδηγήσει στον σχεδιασμό εκπαιδευτικών δράσεων με στόχο τη βελτίωση της μουσειακής εμπειρίας για όλες τις σχολικές ομάδες.
Learning visual and multimodal representations
Authors: Ψωμάς Βασίλειος
Published: September 2024

Στην παρούσα διατριβή διερευνώνται και αναπτύσσονται καινοτόμες μέθοδοι για την εκμάθηση οπτικών και οπτικο-γλωσσικών (πολυτροπικών) αναπαραστάσεων, με έμφαση στη βαθιά εκμάθηση μετρικής, την ταξινόμηση εικόνων και τη σύνθετη ανάκτηση εικόνων. Οι προκλήσεις της εκμάθησης αναπαραστάσεων αντιμετωπίζονται τόσο σε επίπεδο δεδομένων όσο και μοντέλων. Η μέθοδος Metrix προτείνεται για τη βαθιά εκμάθηση μετρικής, χρησιμοποιώντας την τεχνική της ανάμειξης (mixup) για επαύξηση δεδομένων. Το Metrix επιλύει το πρόβλημα της παρεμβολής εικόνων και ετικετών, κάτι που είναι δύσκολο λόγω της μη προσθετικής φύσης των παραδοσιακών συναρτήσεων απώλειας. Γενικεύοντας τις υπάρχουσες συναρτήσεις απώλειας, το Metrix εισάγει την έννοια της "θετικότητας" για ζεύγη εικόνων και αξιοποιεί τη γραμμική παρεμβολή για να βελτιώσει τη μάθηση και να εξερευνήσει νέες περιοχές στο χώρο ενσωματωμένων αναπαραστάσεων. Τα πειράματα δείχνουν ότι το Metrix ξεπερνά τις υπάρχουσες μεθόδους σε ανθεκτικότητα και γενίκευση. Η μέθοδος SimPool επικεντρώνεται στη βελτίωση της διαδικασίας συγκέντρωσης (pooling) στα νευρωνικά δίκτυα, τόσο σε συνελικτικά νευρωνικά δίκτυα (CNNs) όσο και σε οπτικούς μετασχηματιστές (ViTs). Το SimPool αντικαθιστά την προεπιλεγμένη συγκέντρωση με μια προσέγγιση βασισμένη στην προσοχή (attention). Μέσω ενός γενικού πλαισίου, αναλύονται και συγκρίνονται υπάρχουσες μέθοδοι συγκέντρωσης, οδηγώντας στη δημιουργία του SimPool, το οποίο βελτιώνει την απόδοση σε επιβλεπόμενη και αυτο-επιβλεπόμενη μάθηση. Δημιουργεί υψηλής ποιότητας χάρτες προσοχής, βελτιώνοντας τον εντοπισμό αντικειμένων και τη σταθερότητα σε αλλαγές στο υπόβαθρο. Η τρίτη μέθοδος, FreeDom, είναι μια λύση για σύνθετη ανάκτηση εικόνων μηδενικής λήψης (zero-shot) σε σενάρια μετατροπής τομέων ανοιχτού κόσμου. Σε αντίθεση με τις παραδοσιακές μεθόδους που αντιστρέφουν τις εικόνες σε συνεχή χώρο χαρακτηριστικών, το FreeDom χρησιμοποιεί διακριτή αντιστροφή στον χώρο του κειμένου, κάτι που το καθιστά αποτελεσματικότερο στην αναζήτηση. Χρησιμοποιεί ένα προ-εκπαιδευμένο και παγωμένο οπτικο-γλωσσικό μοντέλο, επιτρέποντας την ευέλικτη σύνθεση ερωτημάτων εικόνας και κειμένου. Τα πειράματα δείχνουν ότι το FreeDom αποδίδει καλύτερα από υπάρχουσες μεθόδους σε σενάρια σύνθετης ανάκτησης. Τέλος, η μέθοδος WeiCom εισάγεται για σύνθετη ανάκτηση εικόνων τηλεπισκόπησης, επιτρέποντας την αναζήτηση με βάση την τροποποίηση χαρακτηριστικών όπως το χρώμα, η πυκνότητα και το σχήμα. Χωρίς να απαιτεί εκπαίδευση, το WeiCom χρησιμοποιεί ένα προ-εκπαιδευμένο οπτικο-γλωσσικό μοντέλο και έναν μηχανισμό ελέγχου τροπικότητας για την παραγωγή αποτελεσμάτων προσανατολισμένων είτε στην εικόνα είτε στο κείμενο. Το σύστημα δοκιμάζεται σε ένα νέο σετ δεδομένων, το PatternCom, επιδεικνύοντας ανώτερη απόδοση σε σχέση με άλλες μεθόδους.
Biological flows under the effect of strong magnetic fields with micropolar theory
Authors: Ασλάνη Κυριακή-Ευαγγελία
Published: September 2024

Η παρούσα διδακτορική διατριβή πραγματεύεται τη μελέτη ροών αίματος υπό την επίδραση ισχυρών μαγνητικών με χρήση της μικροπολικής θεωρίας. Η μικροπολική θεωρία αναπτύχθηκε από τον Eringen το 1966 και αποτελεί μία επέκταση του μοντέλου των εξισώσεων Navier-Stokes που εφαρμόζεται στη μελέτη των Νευτώνειων ρευστών. Η διαφορά της μικροπολικής θεωρίας σε σχέση με τις εξισώσεις Navier-Stokes έγκειται στην εισαγωγή ενός νέου διανυσματικού πεδίου (επιπλέον της γραμμικής ταχύτητας του ρευστού), της μικροπεριστροφής, η οποία αφορά τη συνολική γωνιακή ταχύτητα των σωματιδίων της εσωτερικής μικροδομής του ρευστού. Κατά αυτόν τον τρόπο, το αίμα θεωρείται μικροπολικό ρευστό, εξαιτίας της ύπαρξης των ερυθρών αιμοσφαιρίων στο πλάσμα. Επιπλέον, τα ερυθρά αιμοσφαίρια εμφανίζουν μαγνητική πόλωση, εξαιτίας των μαγνητικών ιδιοτήτων της αιμοσφαιρίνης που εμπεριέχεται στα πρώτα. Η μεταβολή της μαγνητικής πόλωσης συνεισφέρει στην αλλαγή της μικροπεριστροφής εξαιτίας της μαγνήτισης, που τείνει να ευθυγραμμιστεί με το εξωτερικά εφαρμοζόμενο μαγνητικό πεδίο. Το φαινόμενο αυτό ονομάζεται μαγνητική μικροπεριστροφή (micromagnetorotation-MMR). Στην πλειοψηφία των θεωρητικών μελετών που ασχολούνται με την επίδραση εξωτερικά εφαρμοζόμενων μαγνητικών πεδίων σε ροές αίματος, ο όρος της μαγνητικής μικροπεριστροφής δεν λαμβάνεται υπόψιν, θεωρώντας ότι το μαγνητικό πεδίο δεν επηρεάζει τη μικροπεριστροφή των ερυθρών αιμοσφαιρίων. Από την άλλη, έχει παρατηρηθεί πειραματικά πως η έκθεση ασθενών σε μαγνητικά πεδία υψηλής έντασης προκαλεί έντονη μείωση της ταχύτητας του αίματος και μια σειρά από συμπτώματα όπως πονοκέφαλος και ίλιγγος, τα οποία δεν εξηγούνται μόνο από την επίδραση της δύναμης Lorentz του μαγνητικού πεδίου στη ροή του αίματος, εξαιτίας της μικρής ηλεκτρικής αγωγιμότητας του τελευταίου. Έτσι, η παρούσα διδακτορική διατριβή εστιάζει στη μελέτη της μαγνητικής μικροπεριστροφής σε μικροπολικές ροές αίματος υπό την επίδραση ισχυρών μαγνητικών πεδίων με σκοπό την παράλληλη μελέτη των πιθανών μηχανισμών διάχυσης/ανακοπής της ροής του αίματος κατά την εισαγωγή ασθενούς σε MRI. Τέλος, μελετάται η επίδραση της μαγνητικής μικροπεριστροφής στην περίπτωση παθολογικών καρδιολογικών καταστάσεων, πχ. στενώσεων και τις πιθανές επιπτώσεις της στη ροή του αίματος.
Effects of pelvic floor muscle training (PFMT) on the sexual function of climacteric women: a systematic review protocol
Authors: Lima Mateus D. A. , de Sousa Vanessa Patricia Soares , de Souza Rafaela J. S. , Almeida Maria de F.C. , de Carvalho Sarah B. G. , Câmara Saionara M. A. , Viana Elizabel de S.R.
Published: September 2024

Introduction Climacteric period signifies a transitional phase characterized by ovarian failure and a decline in estrogen levels, leading to various urogynecological alterations, including potential sexual dysfunctions. Among these, pelvic floor muscle (PFM) function plays a pivotal role in female sexual function. This study aims to evaluate the efficacy of pelvic floor muscle training (PFMT) on the sexual function of climacteric women. Methods Experimental or quasi-experimental studies published in peer-reviewed journals, assessing the sexual function of perimenopausal women with PFMT as an intervention, will be included. Studies conducted in institutionalized populations or with neurological and cognitive diseases will be excluded. This systematic review protocol follows the recommendations of the Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols (PRISMA-P). The searches will be carried out in the Pubmed, LILACS (Latin American and Caribbean Literature on Health Sciences), Scopus, Web of Science, and PEDro, using the Search equation: climacteric women/menopause and PFMT and (sexual function or sexual dysfunction). The assessment of methodological quality will be carried out using the Pedro and GRADE scale, which will involve two independent researchers to evaluate the criteria. A third researcher will resolve discrepancies. Ethics and disclosure Ethical approval is not required as this is a secondary data study. This systematic review began in April 2024 and all steps are expected to be completed by November 2024. PROSPERO registration number CRD42024534297
Dopamine D2 receptor partial agonists in the treatment of schizophrenia -example of brexpiprazole
Authors: Bliźniewska-Kowalska Katarzyna Maria , Gałecki Piotr
Published: September 2024

Od lat 50-tych XX wieku nastąpił dynamiczny rozwój farmakoterapii psychiatrycznej, skutkujący nie tylko zwiększeniem efektywności leczenia pacjentów, ale także poprawą w zakresie minimalizacji objawów niepożądanych terapii. Nowoczesne leki przeciwpsychotyczne III generacji oprócz antagonizmu w stosunku do receptorów D2, wykazują także częściowy agonizm względem receptorów dopaminergicznych. Taki mechanizm działania w założeniu ma regulować przekaźnictwo dopaminergiczne- hamować (antagonizm) je w szlakach, w których jest nadmierne (nadmierne przekaźnictwo w szlaku mezolimbicznym u pacjentów psychotycznych, nadmierne przekaźnictwo w szlaku guzkowo-lejkowym u pacjentów z hiperprolaktynemią) i pobudzać (agonizm) w szlakach, gdzie jest zbyt niskie (szlak mezkortykalny). Wpływa to korzystnie zarówno na redukcję objawów niepożądanych, jak i na objawy negatywne, afektywne i poznawcze pacjentów cierpiących z powodu schizofrenii. Celem niniejszego artykułu poglądowego jest przedstawienie najważniejszych aspektów klinicznych dotyczących stosowania częściowych agonistów receptora dopaminowego D2 w leczeniu schizofrenii na przykładzie brekspiprazolu oraz określenie profilu pacjentów, którym ten lek mógłby być dedykowany- w oparciu o najnowsze doniesienia.
Psychiatrist’s opinion as a premise for legal termination of pregnancy
Authors: Urban-Kowalczyk Małgorzata , Kubiak Rafał
Published: September 2024

Artykuł przedstawia aktualnie obowiązujące w polskim prawodawstwie przepisy dotyczące legalnego przerywania ciąży. W szczególności odnosi się do przesłanki jaką jest orzeczenie lekarza psychiatry o zagrożeniu zdrowia kobiety ciężarnej. W świetle polskiego prawa przerwanie ciąży jest zasadniczo zabronione i sankcjonowane karnie. Od zakazu tego istnieją jednak dwa wyjątki, mianowicie zabieg taki jest dozwolony jeżeli: ciąża stanowi zagrożenie dla życia lub zdrowia kobiety ciężarnej, bądź gdy zachodzi uzasadnione podejrzenie, że ciąża powstała w wyniku czynu zabronionego. W tekście przedstawiono omówienie odpowiednich przepisów oraz wskazówki dotyczące ich interpretacji oraz zastosowania w codziennej praktyce lekarskiej. Problematyka ta jest szczególnie istotna dla lekarzy psychiatrów konsultujących oddziały położnicze. Ponadto opisano najważniejsze zaburzenia psychiczne związane z okresem ciąży i porodu. Przedstawiono cechy kliniczne i rozpowszechnienie okołoporodowych zaburzeń nastroju, a także psychoz. Omówiono także problematykę samobójstw wśród pacjentek w ciąży i w okresie poporodowym. Zaproponowano przykładowy wzór zaświadczenia, a także omówiono wskazówki dotyczące tego jakie informacje i wnioski powinny być zawarte w opinii lekarza psychiatry.
POLISH PSYCHIATRIC ASSOCIATION BOARD INFORMATION
regarding Latuda and Rxulti reimbursement description of indications
POLISH PSYCHIATRIC ASSOCIATION BOARD INFORMATION
regarding Brintellix reimbursement description of indications
Authors: Dudek Dominika , Mielimąka Michał
Published: September 2024

bez streszczenia
Overview of Pilonidal Cyst Treatment Methods - Review Paper
Authors: Łukaszewska Ewa , Sajkiewicz Ilona , Miga-Orczykowska Nadia , Jasiuk Ilona , Lemieszek Paulina , Wójtowicz Justyna , Rudnicka Katarzyna , Pustelniak Martyna , Krukar Katarzyna , Chrościński Kamil
Published: September 2024

Introduction and purpose
 A pilonidal cyst also known as a pilondial sinus, is an inflammatory condition that occurs in the intergluteal region, which can lead to serious infections. It most commonly affects young men, with risk factors including the presence of hair in this area, excessive sweating, obesity, and poor hygiene. Symptoms include a lump, pain, and purulent discharge from openings in the skin. Diagnosis involves taking a medical history, a physical examination, and often an ultrasound. The aim of this paper is to present and compare the available methods for treating pilonidal cysts.
Materials and methods
Literature available in PubMed databases were reviewed using the following keywords: ‘’Pilonidal cyst’’, ‘’Hair cyst’’, ‘’Abscess’’, ‘’Treatment of pilonidal cyst’’,’’ Bascom II method’’,’’ Limberg flap’’,’’ Suchorski technique’’, ‘’V-Y or Z skin flap reconstruction’’,’’ the Karadakis’’
Results
The available treatment methods can be divided into conservative and invasive approaches. Conservative methods include hair removal and improved hygiene. Among the surgical methods, there are traditional excision techniques and modern methods such as excision using the Bascom II method, Limberg flap, Suchorski technique, or V-Y or Z skin flap reconstruction. The Karadakis method, which involves shifting a skin flap, is particularly effective for obese patients.
Conclusion
Treatment of pilonidal cysts depends on the stage and symptoms. Abscesses require urgent surgical intervention, while asymptomatic cysts can be treated conservatively or surgically.
Comprehensive Approaches to the Treatment of Esophageal Achalasia
Authors: Miga-Orczykowska Nadia
Published: September 2024

Introduction and purpose
Achalasia is the most prevalent primary esophageal motility disorder, marked by improper relaxation of the lower esophageal sphincter (LES), increased resting pressure in the LES, and a lack of peristalsis in the esophagus. Symptoms include difficulty swallowing (dysphagia), regurgitation, chest pain, and weight loss. Due to the nonspecific nature of these symptoms, diagnosis can be delayed by several years. Since the underlying cause of achalasia is still unknown, treatment options focus on alleviating symptoms by targeting the lower esophageal sphincter.
Materials and methods 
 
This paper is based on a literature review sourced from PubMed, using the following keywords: achalasia, POEM, laparoscopic cardiomyotomy, pneumatic dilation, and botulinum toxin injection.
Results
Various treatment options are available for achalasia, each offering unique features and results. The main approaches include Peroral Endoscopic Myotomy (POEM), Laparoscopic Myotomy (LM), Botulinum Toxin Injection, and Pneumatic Dilation (PD).
Conclusion
Each treatment differs in its level of invasiveness, duration of symptom relief, risk of complications, and the likelihood of requiring additional interventions. The selection of the most suitable option is influenced by individual patient factors, such as the type and severity of achalasia, overall health, and personal preference
Semiclassical solutions for fractional logarithmic Schrödinger equations with potentials unbounded below
Authors: An Xiaoming , Yang Xian
Published: September 2024

In this paper, we consider the following fractional logarithmic Schrödinger equation
\begin{equation*}
\varepsilon^{2s}(-\Delta)^s u + V(x)u=u\log u^2\quad \text{in } \R^N,
\end{equation*}
where $\varepsilon> 0$, $N\ge 1$ and $V(x)\in C\big(\R^N,\R\big)$ is a potential which can be unbounded below at infinity.
By considering a new penalization, we show that the problem has a nontrivial solution $u_{\varepsilon}$ concentrating at a local minimum of $V$
as $\varepsilon\to 0$.
The relative cup-length in local Morse cohomology
Authors: Rot Thomas , Starostka Maciej , Waterstraat Nils
Published: September 2024

Local Morse cohomology associates cohomology groups to isolating neighbourhoods of gradient flows of Morse functions on (generally non-compact) Riemannian manifolds $M$.
We show that local Morse cohomology is a module over the cohomology of the isolating neighbourhood, which allows us to define a cup-length
relative to the cohomology of the isolating neighbourhood that gives a lower bound on the number of critical points of functions on $M$ that are not necessarily Morse.
Finally, we illustrate by an example that this lower bound can indeed be stronger than the lower bound given by the absolute cup-length.
Topologizing Sperner's lemma
Authors: Tkacz Przemysław
Published: September 2024

The aim of this paper is to extend Sperner's lemma for a new class of complexes, called $n$-Sperner.
Next, we consider a topological version of Sperner's lemma, which leads to characterization of the covering dimension and KKM-principle.
Finally, for an arbitrary topological space a new dimension is defined.
Local and nonlocal problems for fractional impulsive evolution systems with order $\nu\in(1,2)$
Authors: Qiu Kee , Fečkan Michal , Wang JinRong
Published: September 2024

In this paper, we study the existence and uniqueness of $PC$-mild solutions for fractional impulsive evolution systems with Caputo derivative.
First, we give a compact result of the solution operators of linear fractional evolution system while the cosine family is compact.
Second, the representation of $PC$-mild solutions of linear fractional impulsive systems with initial value conditions
and nonlocal initial value conditions are given by using the Laplace transform method. Third, several sufficient conditions
for judging the existence and uniqueness of solutions of our problem are established via some fixed point theorems and operator semigroup theory.
Finally, an example is given to illustrate the results of our paper.
Innovative Business Models in Ocean-Bound Plastic Recycling
Authors: Baron Opher , Romero Gonzalo , Zhang Zhuoluo , Zhou Sean X.
Published: September 2024

Problem definition: About 30 million tons of plastic waste reaches the oceans each year, mostly from low- and middle-income coastal countries. We study novel business models of firms aiming to reduce ocean plastic pollution with a triple-bottom-line (TBL) objective—a weighted sum of profit, environmental impact, and social impact. These firms sell (a) plastic offsets and (b) segregated plastic. Methodology/results: We develop and analyze models where a firm partners with a local plastic recycling supply chain to sell (a), (b), or both via collecting and recycling ocean-bound plastic. Considering additionality (i.e., that the firm can only sell plastic offsets based on recycled plastic that is additional to the plastic recycled without the firm’s presence), we solve the equilibrium outcomes by maximizing the firm’s TBL objective. For the special case of a for-profit firm, we show that additionality can decrease the firm’s social and environmental impacts when selling (a) only or when selling both (a) and (b). Additionality may also alter the effect of the local recycled plastic market (i.e., the number of collectors and the recycled plastic price) on the firm. We find similar insights under the TBL objective via a numerical study calibrated with real data. Managerial implications: When firms decide whether to integrate and promote additionality, they must be careful because it may not only reduce their profit but also, reduce their social and environmental impacts. Moreover, we find that selling both (a) and (b) can generate a much higher TBL objective value than selling either one alone. We also find that firms employing a TBL objective can generate much larger environmental and social impacts with a slight reduction in profits than profit-maximizing firms. Our model and results provide insights into new initiatives for tackling ocean plastic pollution.

Funding: O. Baron and G. Romero are both supported by the Natural Science and Engineering Research Council of Canada. Z. Zhang is partially supported by the Fundamental Research Funds for the Central Universities of Xiamen University [Grant 20720241012]. S. X. Zhou is partially supported by the Hong Kong Research Grants Council General Research Fund [Grant CUHK-14500921], the National Natural Science Foundation of China [Grant 72394395], and the Asian Institute of Supply Chains and Logistics.

Supplemental Material: The online appendix is available at https://doi.org/10.1287/msom.2022.0643 .
Study on the Older Women’s Inner Strength
Authors: Lee Kyoung Soon
Published: September 2024

As people in our society live longer, affirming the quality of their living experience becomes more important. The purpose of this study was to ascertain and analyze the meaning of “inner strength" as revealed from the stories of older women.The methodology utilized was the Heideggerian hermeneutical approach. The sample consisted of 3 women over the age of 65. Their ages were 65, 85 and 86. The data was collected by interview in a natural setting in thier home and office. The tape re corder was used to receive an account of their story during a 1 month.The Researcher analyzed the transcripts.Findings consisted of three patterns : “surviving,” “finding inner strength, ” and **an established philosophy of life.
An Exploratory Study of the factors affecting Awareness toward Euthanacia of a Community’s Residendts
Authors: Ahn Hwang Ran , Park Ok Hee
Published: September 2024

The purpose of this study were to identify level of awareness toward euthanacia : and to identify and test various factors which are closely related to awareness toward euthanacia. This study identified that 18 general characteristics (independent variables) would be related to the awareness toward euthanacia for self, family, others, legistration, total score. Three hundred and eighty community's residents within various ranges of age and education participated in this study. Each awareness toward euthanacia was measured using 12 sementing differential scale. The findings obtained from this study were as follows : 1. Awareness toward euthanacia (self, others, legistation, total score) of a community’s residents in Chinj u city was approaching to positive direction, but awareness toward euthanacia (family) was approaching to neutral direction.2. Job, level of education, information about euthanacia, legistration, agree about bain death, right about death, acception about death, information about death, thought about death, the place of dying caregiver of death were identified as signifi* cantly related to awareness toward euthanacia a community’s residents in Chinj u city.In conclusion, awareness toward euthanacia of a community’s residents in Chinju city was approaching to positive direction, and There were 10 variables which influences the awareness toward euthanacia at significantly level. The factors were information and legistration about euthanacia, agree about brain death, right and acception about death, thought about death, level of education, job, the place of dying, care giver of death.
Effect of MBTI Growth Program on the State Anxiety of Nursing Students before Initial Clinical Experience
Authors: Jung Min
Published: September 2024

The purpose of this study was to examine the effect of the MBTI Growth Program(MBTI GP) on the State - Anxiety of nursing students before initial clinical experience and non-equivalent control group post-test only design, quasi -experimental study was attempted to establish the purpose.The MBTI (Meyers Briggs Type Indicator) was developed by Meyers & Briggs and the State -Anxiety Inventory was developed by Spielberger MBTI GP was developed based on Workshop Leader’s Guide and was applied by researcher.Subjects in experimental group were assigned 4hours the MBTI GP before initial clinical experience and then was measured the State-Anxiety after lweek. Subjects in control group was measured the State — Anxiety after lweek. Subjects in control group was measured the State — Anxiety before initial clinical experience without participating in the MBTI GP.Data were analyzed by r2 —test, t—test using SPSS pc. The result are summarized as follows :1. There were no significant differences in the characteristics of the subjects between the experimental and control group.2. The main hypothesis that the experimental group who are participated on the MBTI GP will show lower degree of the State — Anxiety scores than the control group who ar’nt participated on the MBTI GP was supported(t=2.94, p<.005).3. The sub-hypothesis that according to the preference chatacteristics of personality there were significant differences on the State—Anxiety scores between the experimental and control group was supported partially. In I(p<.005), S(p<.005), T (p<.005), J(p<,05), P(p<.05) types among 8 preference characteristics of subject's person ality, there were significant differences between the experimental and control group was rejected in E, N, F types.Results of this study showed that MBTI GP is effective in decreasing State — Anxiety of nursing students before initial clinical experience.
Efficient finite element modeling of photonic modal analysis augmented by combined symmetry
Authors: Wang Jingwei , Liu Lida , Jing Yuhao , Xiong Zhongfei , Chen Yuntian
Published: September 2024

In this work, we present an efficient numerical implementation of the finite element method for modal analysis that leverages various symmetry operations, including spatial symmetry in point groups and space-time symmetry in pseudo-hermiticity systems. We provide a formal and rigorous treatment, specifically deriving the boundary constraint conditions corresponding to symmetry constraints. Without loss of generality, we illustrate our approach via computing the modes of optical waveguides with complex cross-sections, accompanied by performance benchmark against the standard finite element method. The obtained results demonstrate excellent agreement between our method and standard FEM with significantly improved computational efficiency. Specifically, the calculation speed increased by a factor of 23 in the hollow-core fiber. Furthermore, our method directly classifies and computes the modes based on symmetry, facilitating the modal analysis of complex waveguides.
Energy- and angle-resolved coherent control on photoelectron dynamics by a directionality orthogonal double-slit interferometry
Authors: Liu Mingqing , Jiang Wei-Chao
Published: September 2024

We propose a directionality orthogonal double-slit interferometry to control photoelectron dynamics in energy- and angle-resolved fashion. The two orthogonal components of polarization-skewed (PS) laser pulse, in which the total polarization vector rotates as time evolves, can be regarded as the double-slit in the time domain. Our results demonstrate that the peak splitting and shift in photoelectron momentum distributions can be controlled by the relative optical phase between two components of the PS pulse. Based on the analysis from time-dependent perturbation theory, the behaviors of photoelectrons in angle-integrated energy spectra between 1s and 2p initial states can be attributed to the significant discrepancy of an interference pattern, which is reflected in energy- and angle-dependent phase difference of transition amplitudes from two orthogonal components of PS pulse. In addition, the influences of time delay and intensity ratio between two subpulses on this coherent control are also discussed. Our work provides a feasible protocol for controlling photoelectron dynamics in energy and angular resolutions and enriches the potential applications of the double-slit interference in the time domain.
Spectral behavior and expansion dynamics of Gd plasma generated by dual-pulse laser irradiation
Authors: Wen Zhilin , Xie Zhuo , Wang Chaohui , Zhang Qijin , Song Xiaowei , Dou Yinping , Li Bochao , Pan Qikun , Chen Fei , Zhao Chongxiao , Lin Jingquan
Published: September 2024

Laser-produced gadolinium plasma (Gd-LPP) emerges as a promising candidate for next-generation nanolithography light sources. In this study, a dual laser pulse scheme was implemented to achieve a narrow spectral peak. By varying the pre-main pulse delay and pre-pulse laser energy, optimal conditions of 40 ns delay and 50 mJ energy were identified to improve spectral purity. Radiation hydrodynamics simulations revealed that the improved spectral purity stems from a flatter density gradient at the ablation front and a lower average electron density in the EUV emission region. Additionally, reheating the pre-formed plasma with a short main pulse mitigated plasma squeezing, resulting in an even lower electron density and thus improved spectral purity. Our findings suggest that spectral narrowing in the dual-pulse scheme, essential for better matching with multilayer reflection bandwidths, can be optimized through precise control of pre-pulse energy, pre-main delay, and main-pulse duration.
Experimental demonstration on the proactive detection of fiber tapping in optical chaos communication
Authors: Wang Longsheng , Du Xinyuan , Mao Xiaoxin , Guo Yuanyuan , Wang Anbang , Wang Yuncai
Published: September 2024

Optical chaos communication has a physical-layer security advantage but defends passively against a malicious attack. Here, we conduct a proof-of-concept experiment of detecting the attack proactively by observing performance degradation in optical chaos communication tapped with fiber bending. Influences of the curvature radius of the bent fiber on a chaos synchronization coefficient and bit error rate are investigated. Results show that the synchronization coefficient decreases from 0.958 to 0.904 and the bit error rate increases from 1.31 × 10−4 to 1.73 × 10−3 under a curvature radius of 10 mm, revealing the attack. Bending fiber to this extent leads to a power loss of 1.81%, which is difficult to detect by the optical time-domain reflectometer but causes significant interference to chaos communication due to the concurrent change in the light polarization, jointly decreasing the effective optical injection strength for yielding chaos synchronization.
Developing an efficient garnet-type near-infrared phosphor Na1.5Gd1.5Sc2Ge3O12:Cr3+ with relatively long-wavelength emission
Authors: Li Ying , Li Chaojie , Li Chao , Zhong Jiyou
Published: September 2024

Developing efficient near-infrared (NIR) phosphor with an emission peak wavelength over 850 nm is crucial to realize multi-functional spectroscopy applications, while this remains a significant challenge. Herein, a garnet-type Na1.5Gd1.5Sc2Ge3O12:Cr3+ phosphor with an emission peak located at 882 nm was created from Na
δ
Gd
δ
Ca3-2δSc2Ge3O12:Cr3+ (0 ≤ δ ≤ 1.5) solid solutions basing on the effect of cationic disorder. The maximum internal quantum efficiency (IQE) of Na1.5Gd1.5Sc2-xGe3O12:xCr3+ reached 84.6% when x = 0.01. The maximum external quantum efficiency (EQE) can be optimized to 20.6%. Using this material, a prototype NIR phosphor-converted light-emitting diodes (pc-LEDs) device was fabricated, which demonstrates an excellent prospect in spectroscopy applications.
Hyperdimensional computing: A fast, robust, and interpretable paradigm for biological data
Authors: Stock Michiel , Van Criekinge Wim , Boeckaerts Dimitri , Taelman Steff , Van Haeverbeke Maxime , Dewulf Pieter , De Baets Bernard
Published: September 2024

Advances in bioinformatics are primarily due to new algorithms for processing diverse biological data sources. While sophisticated alignment algorithms have been pivotal in analyzing biological sequences, deep learning has substantially transformed bioinformatics, addressing sequence, structure, and functional analyses. However, these methods are incredibly data-hungry, compute-intensive, and hard to interpret. Hyperdimensional computing (HDC) has recently emerged as an exciting alternative. The key idea is that random vectors of high dimensionality can represent concepts such as sequence identity or phylogeny. These vectors can then be combined using simple operators for learning, reasoning, or querying by exploiting the peculiar properties of high-dimensional spaces. Our work reviews and explores HDC’s potential for bioinformatics, emphasizing its efficiency, interpretability, and adeptness in handling multimodal and structured data. HDC holds great potential for various omics data searching, biosignal analysis, and health applications.
Drosophila larvae form appetitive and aversive associative memory in response to thermal conditioning
Authors: Polizos Nikolaos T. , Dancausse Stephanie , Rios Consuelo , Klein Mason
Published: September 2024

Organisms have evolved the ability to detect, process, and respond to many different surrounding stimuli in order to successfully navigate their environments. Sensory experiences can also be stored and referenced in the form of memory. The Drosophila larva is a simple model organism that can store associative memories during classical conditioning, and is well-suited for studying learning and memory at a fundamental level. Much progress has been made in understanding larval learning behavior and the associated neural circuitry for olfactory conditioning, but other sensory systems are relatively unexplored. Here, we investigate memory formation in larvae treated with a temperature-based associative conditioning protocol, pairing normally neutral temperatures with appetitive (fructose, FRU) or aversive (salt, NaCl) stimuli. We test associative memory using thermal gradient geometries, and quantify navigation strength towards or away from conditioned temperatures. We find that larvae demonstrate short-term associative learning. They navigate towards warmer or cooler temperatures paired with FRU, and away from warmer or cooler temperatures paired with NaCl. These results, especially when combined with future investigations of thermal memory circuitry in larvae, should provide broader insight into how sensory stimuli are encoded and retrieved in insects and more complex systems.
External morphometric and microscopic analysis of the reproductive system in in- vitro reared stingless bee queens, Heterotrigona itama, and their mating frequency
Authors: Wongsa Kanyanat , Duangphakdee Orawan , Poolprasert Pisit , Rattanawannee Atsalek
Published: September 2024

Stingless bees, prevalent in tropical and subtropical regions, are a tribe of eusocial bees that are crucial pollinators for economic crops and native plants and, produce honey and pollen. However, colony expansion is limited by a shortage of queens for new colonies. Therefore, mass artificial rearing of virgin queens could address this in commercially managed meliponiculture. Furthermore, the in vitro rearing of queen stingless bees can improve meliponiculture management and conservation efforts. Herein, we explored the efficacy of in vitro queen rearing for Heterotrigona itama, assessing the queen’s body size, reproductive organ size (ovary and spermatheca), acceptance rate into new, small colonies, and mating frequency. H. itama larvae developed into queens when fed with 120 μL–150 μL of larval food, resulting in in vitro queens having body sizes similar to those of naturally produced queens. Microscopic analysis revealed well-developed ovaries and spermathecae in in vitro-reared queens, unlike the smaller ovaries and the absence of spermathecae in the naturally produced workers. Acceptance of in vitro-reared queens was independent of worker age, and mating frequency was low but not significantly different from naturally produced queens. These findings could enhance stingless beekeeping practices and conservation efforts for the native stingless bee species.
Low peaking-phenomenon cascade high-gain observer design with LPV/LMI method
Authors: Li Qi , Duan Lu , Cao Guangyu , Meng Fanwei
Published: September 2024

To cope with the well-known peaking phenomenon and noise sensitivity in the application of the High-Gain observer, a parameter tuning method based on the LPV/LMI approach for a 2nd-order cascade observer structure is proposed in this paper. Compared to other high-gain observer methods, this method can significantly reduce the infimum of gain in the observer, thereby reducing the peak phenomenon of state estimation and the influence of measurement output noise. By transforming the observer structure into a Luenberger-like structure, the parameters of the observer can be solved by one linear matrix inequality (LMI) with a high-gain effect or a 2n of LMI sets (LMIs) without a high-gain effect. Then by decomposing the nonlinear part of the system dynamics into high-dimensional and low-dimensional parts, we could solve the adjustable number 2 j s of LMIs can be solved to obtain the result with limited high-gain effect. Stability analysis based on the Lyapunov method proves the convergence of this method, and the effectiveness of this method is verified through applications to one single-link mechanical arm model and a vehicle trajectory estimation application.
Update on a brain-penetrant cardiac glycoside that can lower cellular prion protein levels in human and guinea pig paradigms
Authors: Eid Shehab , Zhao Wenda , Williams Declan , Nasser Zahra , Griffin Jennifer , Nagorny Pavel , Schmitt-Ulms Gerold
Published: September 2024

Lowering the levels of the cellular prion protein (PrPC) is widely considered a promising strategy for the treatment of prion diseases. Building on work that established immediate spatial proximity of PrPC and Na+, K+-ATPases (NKAs) in the brain, we recently showed that PrPC levels can be reduced by targeting NKAs with their natural cardiac glycoside (CG) inhibitors. We then introduced C4’-dehydro-oleandrin as a CG with improved pharmacological properties for this indication, showing that it reduced PrPC levels by 84% in immortalized human cells that had been differentiated to acquire neural or astrocytic characteristics. Here we report that our lead compound caused cell surface PrPC levels to drop also in other human cell models, even when the analyses of whole cell lysates suggested otherwise. Because mice are refractory to CGs, we explored guinea pigs as an alternative rodent model for the preclinical evaluation of C4’-dehydro-oleandrin. We found that guinea pig cell lines, primary cells, and brain slices were responsive to our lead compound, albeit it at 30-fold higher concentrations than human cells. Of potential significance for other PrPC lowering approaches, we observed that cells attempted to compensate for the loss of cell surface PrPC levels by increasing the expression of the prion gene, requiring daily administration of C4’-dehydro-oleandrin for a sustained PrPC lowering effect. Regrettably, when administered systemically in vivo, the levels of C4’-dehydro-oleandrin that reached the guinea pig brain remained insufficient for the PrPC lowering effect to manifest. A more suitable preclinical model is still needed to determine if C4’-dehydro-oleandrin can offer a cost-effective complementary strategy for pushing PrPC levels below a threshold required for long-term prion disease survival.
Harnessing long-term gridded rainfall data and microtopographic insights to characterise risk from surface water flooding
Authors: Mukherjee Kriti , Rivas Casado Mónica , Ramachandran Rakhee , Leinster Paul
Published: September 2024

Climate projections like UKCP18 predict that the UK will move towards a wetter and warmer climate with a consequent increased risk from surface water flooding (SWF). SWF is typically caused by localized convective rainfall, which is difficult to predict and requires high spatial and temporal resolution observations. The likelihood of SWF is also affected by the microtopographic configuration near buildings and the presence of resilience and resistance measures. To date, most research on SWF has focused on modelling and prediction, but these models have been limited to 2 m resolution for England to avoid excessive computational burdens. The lead time for predicting convective rainfall responsible for SWF can be as little as 30 minutes for a 1 km x 1 km part of the storm. Therefore, it is useful to identify the locations most vulnerable to SWF based on past rainfall data and microtopography to provide better risk management measures for properties. In this study, we present a framework that uses long-term gridded rainfall data to quantify SWF hazard at the 1 km x 1 km pixel level, thereby identifying localized areas vulnerable to SWF. We also use high-resolution photographic (10 cm) and LiDAR (25 cm) DEMs, as well as a property flood resistance and resilience (PFR) database, to quantify SWF exposure at property level. By adopting this methodology, locations and properties vulnerable to SWF can be identified, and appropriate SWF management strategies can be developed, such as installing PFR features for the properties at highest risk from SWF.
MATHEMATICAL MODEL OF PERTALITE AND PERTAMAX GASOLINE FUEL CONSUMPTION ON HONDA REVO MOTORBIKES
Authors: Sugiyanto
Published: September 2024

Revo 110 is one of the motorbikes produced by PT Astra Honda Motor. Mathematical modeling of this motorbike's fuel consumption with Pertalite and Pertamax produces a linear equation. In the mathematical model, one liter of Pertalite fuel consumption results in a distance of 45.0045 km, while with one liter of Pertamax it produces a distance of 56.2430 km.
IRON PAINTING PROCESS AND MATHEMATIC MODELING OF IRON PAINTING DRYING
Authors: Unike Khaerani Salmayanti
Published: September 2024

Iron painting aims to make the object to be painted look attractive and extend the life of the iron from corrosion. In the process of drying iron painting using the Moisture Ratio formula MR = 1 - t/5, with ambient temperature  25°C.
STATISTICAL DATA OF COMFORT LEVEL PROVINCE OF DAERAH ISTIMEWA YOGYAKARTA, INDONESIA
Authors: Sugiasih
Published: September 2024

Daerah Istimewa Yogyakarta is one of the provinces in Indonesia. The criteria for comfort in the Daerah Istimewa Yogyakarta at 13.00 have been very uncomfortable. The criteria for comfort in the Daerah Istimewa Yogyakarta several times at 10.00 and 16.00 were uncomfortable. The criteria for comfort are comfortable at 13.00 because it is raining, which makes the criteria comfortable.
LIMASAN HOUSE OMPAK STONE PAINTING PROCESS AND MATHEMATICAL MODELING OF OMPAK PAINTING DRYING
Authors: Unike Khaerani Salmayanti
Published: September 2024

Ompak painting is a coating of ompak stone with the aim of being nice to look at. In the drying process of painting ompak stone, the Moisture Ratio formula MR = 1 - t/23 is obtained, where t the paint drying time.
ANALYSIS OF THE INFLUENCE OF THE POSITION OF THE FIRST THREAD TURN OF THE ROLLER ALONG ITS AXIS ON THE UNEVEN DISTRIBUTION OF THE LOAD IN A NUT-FREE ROLLER DRIVE
Authors: Blinov D. S. , Tsvetkov D. I. , Morozov M. I.
Published: September 2024

In mechanical engineering, screw drives are widely used, which convert rotational motion into translational motion. These include roller drives (RD), which have high performance characteristics and are by far the most promising. For the production of RD, special expensive imported machines are required, therefore, in Russia, as part of the import substitution program, nut-free RDs have been developed, the manufacture of which is possible on universal equipment. They are chosen as the object of research. For reliable, durable and economical operation of nut-free RDs, their reliable calculations are required according to the most important performance criteria. In this case, first, a force calculation of the transmission is performed, then its details, connections of details and transmission as a whole mechanism are calculated for strength, rigidity, durability, etc. The article considers the force calculation of nut-free RD, which have a number of features, including the feature of loading its intermediate parts - threaded rollers. A force from the actuator acts on the roller along its axial line, and roller is balanced by axial forces on the thread of the roller interacting with the thread of the screw. From here, the overturning moment from axial forces acts on the roller, which is balanced by the redistribution of forces on the thread of the roller and the forces from the two rings that keep the roller from radial movement. This leads to uneven distribution of the load between the thread turns of the roller, which is estimated by the coefficient of uneven loading. The article reveals a design parameter that leads to a change in the coefficient of uneven loading of a nut-free RD during operation. That parameter is the position along the axis of the first thread turn from the end of the roller, which receives the load (working thread turns) from the actuator, and other working thread turns along the axis of the roller. The reason for this change is the variation in the number of working threads turns of the roller and the distance of the balancing force on the working turns. At the same time, the range of the coefficient of uneven loading of a nut-free RD is quite large and must be taken into account in the calculations.
STABILITY OF THE HYDRAULIC DRIVE FOR CONTROLLING THE ADJUSTABLE THROTTLE (CHOKE VALVE) OF X-MAS TREE UNDER NON-STATIONARY LOAD ON THE LOCKING AND REGULATING ELEMENT
Authors: Trukhanov K. A. , Chelyshev A. V. , Apokin S. A.
Published: September 2024

An adjustable Christmas tree throttle valve (RDFA or choke valve) is an important part of the fluid supply control system (produced gas condensate) in each well, which determines, in particular, the operation of the well during the life of the well and, in general, the performance of the entire field. The hydraulic drive that controls the position of the locking and regulating element (LRE) of the throttle must provide increased requirements for reliability and dynamics, based on the requirements for the stability of the LRE. By stability is meant the preservation of the given equilibrium states by the system or the provision of the given types of motion. In the case of studying nonlinear systems, special attention should be paid to such a phenomenon as self-oscillations. The occurrence of self-oscillations and the phenomenon of resonance in the system can cause the «beginning of catastrophes». With the development of digital technologies, it has become possible to predict and determine many negative phenomena in technical systems without conducting an expensive physical experiment by creating a mathematical model of the object of observation, subject to the qualification and verification of the developed model. The simulation results exclude emergencies during the operation of the developed equipment in production. In addition, modeling allows you to optimize various parameters of the developed technical system, which leads to greater benefits from its operation. The article presents the results of research and modeling of the stability of the RDFA operation under conditions of non-stationary load acting on its LRE, and non-stationary hydrodynamic processes in the production line, the processes in which are controlled by the RDFA. Recommendations for the operation of this equipment based on the obtained data of numerical calculations are also given.