bluuebunny/crossref_metadata_2025 huggingface dataset:
Açık ofislerin duvar ve donatı elemanlarında kullanılan renklerin kullanıcıların algısal değerlendirmeleri üzerindeki etkileri
Authors: ERGÜN Buğra , YILDIRIM Kemal , HİDAYETOĞLU M. Lütfi
Published: April 2023

Bu araştırmada, insanların yaşamlarının önemli bir bölümünün geçtiği açık ofislerin duvarlarında ve iç donatı elemanlarında tek renk armonisine göre kullanılan renk türünün (nötr, sıcak, soğuk) katılımcıların algısal değerlendirmeleri üzerindeki etkilerinin belirlenmesi amaçlanmıştır. Daha önceki çalışmalardan farklı olarak renk değişkeni sadece duvarda değil, aynı zamanda donatılarda da kullanılmıştır. Çalışmada, üç farklı renk türüne göre modellenen sanal açık ofis mekânlarının katılımcıların algısal değerlendirmelerini etkileyebileceği düşünülmektedir. Bu araştırma varsayımını test etmek için açık ofis mekanlarını, katılımcıların Google Formlarda oluşturulan anket formu uygulaması üzerinden online değerlendirmeleri istenmiştir. Anket ile toplanan verilere göre, sıcak renk kullanılan mekânın, nötr ve soğuk renk kullanılan mekânlara göre daha olumlu yönde algılandığı, tasarım eğitimi almayan katılımcıların, erkeklerin ve 25-35 yaş grubundaki katılımcıların, tasarım eğitimi alan mimarlara, kadınlara ve 36-45 yaş grubu katılımcılara göre daha olumlu yönde değerlendirmeler yaptığı belirlenmiştir.
Spor sahaları drenajına genel bakış: Deneysel çalışma sistematiğinin oluşturulması
Authors: KESGİN Erdal , GEZİCİ Kadir , AĞAÇCIOĞLU Hayrullah
Published: April 2023

Sızma ve drenaj konularında toprak-su ilişkilerinin hidrolojik olarak değerlendirilmesi karmaşık bir süreçtir. Bu çalışmada, spor sahalarının tasarımı aşamasında gerçekleştirilmesi gereken yöntemlerin, özellikle deneysel çalışma sistematiğinin önemi üzerinde durulmuştur. Spor sahaları drenajının literatürde belirli bir standardının olmaması ve tasarımların çoğunlukla deneyime dayalı olarak gerçekleştirilmesi nedeniyle standart bir yöntem geliştirilmeye çalışılmıştır. Deneysel çalışmaların başarısı için gerekli koşullar sunularak, hazırlanan örnek drenaj kesitleri karşılaştırılmıştır. Yapılan deneysel çalışmalar sonucunda, sisteme uygulanan hiyetograf deseninin ve drenaj kesiti tabaka kalınlıklarının, çıkış debisi hidrografının parametreleri üzerinde oldukça etkin olduğu anlaşılmıştır. Bu çalışma, spor sahalarının drenajı hakkında literatürde yeterli sayıda çalışma olmaması ve araştırma tekniklerinin net olarak ortaya konulmaması dikkate alınarak yeni bir bakış açısı kazandırılması ve bir araştırma yöntemi önerilmesi sebebiyle önem arz etmektedir.
Tabular alümina içeren magnezya bazlı dökülebilir refrakterlerin kendinden akış, fiziksel, mekanik ve cüruf korozyonu özellikleri
Authors: ALPDOĞAN Büşra , YILMAZ Suat
Published: April 2023

İyi refrakterlik, yüksek sıcaklıklara dayanım ve bazik ortamda kimyasal stabilitesinin yüksek olması gibi olumlu özellikleriyle magnezya (MgO) esaslı tuğla tipi refrakterler, başta çelik üretiminde olmak üzere, bazik yüksek sıcaklık proseslerinde yaygın olarak kullanılanılmaktadır. MgO’nın “tuğla” tipleri yaygın kullanıma sahip olmasına rağmen, “dökülebilir” uygulamaları aynı hızda gelişememiştir. Bunun nedeni, MgO’nın sulu ortamda hidrate olmasıdır. Bu çalışmada, farklı oranlarda tabular alümina içeren magnezya esaslı dökülebilir refrakterlerde kimyasal bileşimin malzemelerin fiziksel, mekanik ve korozyon özelliklerine etkisi araştırılmıştır. Ağ.% 0, -3, -6 ve -10 Tabular Alümina katkılı MgO bazlı dökülebilir karışımları hazırlanmış, bunların kendinden akma testi ile serbest akış uygunluğu belirlenmiştir. Sonuçlara göre; ağ.%6 ve -10 Tabular Alümina katkılı dökülebilirler, testi geçerek kendinden akmaya uygunluğu belirlenmiştir. Ancak birbirleriyle karşılaştırılabilmesi için tüm karışımlar, titreşimli kalıblarda şekillendirilmiştir. Şekillendilirilmiş numuneler, MgO’nın efektif dehidrasyonu ve kurutulması için yavaşça uygulanan kürleme rejiminin ardından 1600°C'de pişirilerek sinterlenmiştir. Pişmiş numunelere yığın yoğunluk, görünür gözeneklilik ve su emme tayini gibi fiziksel testler, soğukta basma dayanımı testi gibi mekanik testler, cüruf-refrakter korozyon testi gibi kimyasal korozyon testleri uygulanmıştır. XRD ve SEM/EDX gibi karakterizasyon analizleri sonucu elde edilen bulgular, karşılaştırmalı olarak ortaya konmuş ve irdelenmiştir. Bu çalışmalar sonucunda; MgO esaslı refrakter dökülebilir malzemelere, Tabular Alümina katkısının, kendinden akış özellikliği üzerine sınırları belirlenmeye çalışılmıştır.
Mimarlıkta kalite ölçümüne yönelik boşluk modeli yaklaşımı
Authors: IŞIKLAR BENGİ Sena , TOPRAKLI Abdurrahman
Published: April 2023

Kalite, bir ürünün niteliği veya uygunluğu üzerinden anılmaktadır. Yapılı çevrede kalite ise fonksiyonel, formal, yapısal ve ekonomik olmak üzere dört ana başlıkta ele alınmaktadır. Fonksiyonel kalite, mekânın planlanması, değeri, kullanım biçimleri, mekânlar arası ilişkileri, erişilebilirliği, esnekliği, dönüşebilirliği, kullanıcıların mekânsal memnuniyet algılarını, kullanıcıların mekânı kullanım biçimlerini; formal kalite, estetik, algı (kültürel değerler ve bilişsel etkenler), semiyotik anlamlar, çağa uygunluk, bağlamı ile uyumluluk gibi başlıkları; yapısal kalitenin, strüktür tasarımı, sağlamlık, uygun malzeme ve yapım tekniğini, sürdürülebilir-çevre dostu olma özelliğini; ekonomik kalite ise, planlama bütçesini, inşa bütçesini, işletme bütçesini, yatırım değerini kapsamaktadır. Bir yapının kaliteli olup olmadığının saptanması, bu başlıkların değerlendirme odaklı bir yaklaşımla ele alınmasını gerektirmektedir. Bu çalışmada ise hizmet sağlayıcının tüketici arzularını bilmesini sağlayan hizmet kalitesi modellerinden boşluk modeli, mimari yapının kalitesinin ölçülmesi için bir altlık olarak ele alınmaktadır. Çalışma boşluk modelini mimarlığa uyarlayan kavramsal bir çerçeve sunmaktadır. Bu öneride boşluk modelinin başlıca unsurlarından beklenen hizmet, beklenen mimari kaliteye; algılanan hizmet, algılanan mimari kaliteye; yeterli görülen hizmet ise, kullanıcı ve işvereni memnun eden performansa dönüştürülmüştür. Ardından hizmet kalitesindeki boşluk yaklaşımında geliştirilen boşluklardan yola çıkılarak, yapılarda beklenen ve algılanan kaliteyi ölçmek üzere uyarlanan olan dört yeni boşluk önerilmiştir. Boşlukların değerlendireceği anahtar kelimeler ve boşlukların aktörler arası ilişkileri tanımlanmıştır. Böylece yapının fonksiyonel, formal, yapısal ve ekonomik kalitesini ölçen; kullanıcı ve işverenin beklentilerinin anlaşılmasını sağlayan bir çerçeve için altlık sunulmuştur.
Spektral olarak ayarlanabilir ve polarizasyon bağımsız çift bant plazmonik mükemmel soğurucunun sayısal analizi
Authors: KIRLAR Mustafa , TÜRKMEN Mustafa
Published: April 2023

Bu çalışmada, orta kızılötesi bölgede çalışan çift bant rezonans frekansına sahip yeni bir plazmonik mükemmel soğurucu yapısı sunulmuştur. Yapının analizleri, ticari bir yazılım programı yardımıyla gerçekleştirilmiştir. Önerilen mükemmel soğurucu yapısı, gelen ışını düşük frekans modunda %98' in üzerinde ve yüksek frekans modunda % 99' un üzerinde soğurmaktadır. Soğurum mekanizmasında etkili bir rol oynayan iletken ve dielektrik tabaka kalınlıklarının değişimi incelenerek çalışmada kullanılacak olan kalınlık değerleri belirlenmiştir. Dielektrik tabaka üzerine konumlandırılmış nanoanten dizisinin geometrik parametreleri değiştirilerek bu parametrelerin rezonans modlara etkisi incelenmiş ve bu modların ayarlanabilirliği nanoanten dizisi için analiz edilmiştir. Polarizasyon bağımsızlığı üç farklı kutuplanma açısı için analiz edilmiştir. İncelenen açı değerlerinde yapının polarizasyondan bağımsız olduğu ortaya konmuştur. Çalışmada ayrıca yük yoğunluğu dağılımları ile rezonans modları için elektrik ve manyetik alan dağılımlarının soğurum spektrumları incelenmiştir. Ayarlanabilir spektral özellikleri, polarizasyon bağımsız olması, güçlendirilmiş elektrik ve manyetik cevapları sayesinde önerilen plazmonik mükemmel soğurucu, orta kızılötesi spektroskopi uygulamalarında kullanılabilir.
İşbirlikli insansız hava araçlarının iletişiminin Nakagami-m sönümlemeli kanal altında etkisi
Authors: KARABULUT Muhammet Ali , SHAH A F M Shahen
Published: April 2023

Bu çalışmada, insansız hava araçları (unmanned aerial vehicles, UAV) için işbirlikli iletim ortam erişim kontrolü (cooperative transmission medium access conrol, CT-MAC) protokolünün Nakagami-m kanal sönümlemesi üzerine performansı araştırılmıştır. Önerilen protokol, verimi artırmak için esas olarak doğrudan iletim (DT) ve işbirlikli iletim (CT) modlarını içermektedir. Ayrıca, uygun bir veri iletim modunu seçmek ve optimal röleyi seçmek için algoritma tanımlanmaktadır. Yalnızca doğrudan iletişim için özel olarak tasarlanmış IEEE 802.11 standartlarında tanımlanan mekanizma, işbirlikli iletişim için uygun değildir. Bu nedenle, yeni kontrol paketleri kullanılır ve mevcut kontrol paketi formatı, işbirliğine dayalı iletişimi desteklemek üzere değiştirilmiştir. Önerilen CT-MAC protokolünün performans analizini gerçekleştirmek için, doymamış Markov Zinciri modeline dayanan bir analitik model simülasyonla türetilip ve doğrulanmıştır. Benzetim sonuçları, önerilen protokolün sistem verimini en üst düzeye çıkardığını göstermektedir.
M-CSK-Flip-OFDM sistemlerinin RS ve CC kodlama altında BER ve PAPR analizlerinin incelenmesi
Authors: TEKİN Meral , SAVAŞÇIHABEŞ Asuman , ERTUĞ Özgür
Published: April 2023

Bu makalede, OFDM'nin optik kablosuz iletişim sistemleri için verimli bir tek kutuplu versiyonu olan Flip-OFDM dalga biçiminde titreşim sorunu olmadan M-seviye renk kaydırmalı anahtarlama (M-CSK) modülasyonunun kullanılması önerilmiştir. Önerilen şemanın performansı, bit-hata oranı (BER) ve tepe ortalama güç oranı (PAPR) kriterlerine dayalı M-QAM modülasyonlu Flip-OFDM ve M-CSK modülasyonlu VLC OFDM yöntemleri ile karşılaştırılır. BER performansı da önce kodlanmamış önerilen şema, ardından iki kanallı kodlama teknikleri, yani Reed-Solomon (RS) kanal kodlayıcı ve Evrişimli Kodlar (CC) kullanılarak iki kanal, yani AWGN ve optik LOS kanalı kullanılarak analiz edilmiştir. Tüm kanal kodlama teknikleri, QAM modülasyonu kullanılarak gerçekleştirilir. Simülasyon sonuçları, önerilen M-CSK Flip-OFDM yönteminin hem AWGN kanalı hem de optik LOS kanalı için yüksek SNR değerlerinde iyi performans elde ettiğini ve ayrıca RS ve CC uygulanarak BER performansının da iyileştirildiğini göstermektedir.
Druk (2020) Movie as an Example of Authentic Way of Being: A Heideggerian Approach
Authors: İŞLER SEVİNDİ Meltem , AKALIN Atilla
Published: April 2023

Heidegger's philosophical project is generally seen as atheoretical and anti-logical because he remarked on the subjective conditions of knowledge and the everydayness of human behaviors. To him, Dasein's everyday reasoning is coercively and inevitably framed by the present-at-hand modes of understanding. Heidegger alerts us about the possible origins of present-at-hand modes of everyday experience. One of them is Das Man that, is associated with a categorical otherness for Heidegger. It can be regarded as an origin of the primordial scheme of experiences for Dasein that takes those experiences for granted as an axiological ground for their lives in the World. Heidegger sees that process as an inauthentic condition for Dasein's fundamental character. Everyday reasoning generates a variety of present-at-hand instruments to understand and interpret the World and Dasein itself; thus, Dasein moves between Das Man and authentic modes. With a Heideggerian approach, this article observes how the characters in the film Druk take themselves out of Das Man and go into the authentic mode and how they do this through alcohol. The primary data source is Druk and the four teacher characters in the film. In the movie, alcohol is not a ready-to-hand object but a tool motivating its users and pushing them to perform. It is an example equivalent to the Heideggerian analogy of the hammer. The movie is a well-fitting example of the Heideggerian position with the story of four teachers who experiment with having a certain amount of alcohol in their blood to achieve a better version of themselves.
Ein Reinforcement-Learning-Ansatz für die Optimierung von Heizkurven
Authors: Huang Chenzi , Seidel Stephan , Pruvost Hervé , Bräunig Jan
Published: April 2023

In diesem Beitrag wird das Potenzial einer intelligenten Vorlauftemperaturregelung für das Heizungsnetz eines modernen Bürogebäudes analysiert. Da das Gebäude mit  einem Niedertemperatur-Fußbodenheizsystem und großen  Fensterflächen ausgestattet ist, besteht die Gefahr  einer Überhitzung der Räume an Tagen mit viel  Sonnenenergie, jedoch kühlen Nächten. Durch eine Optimierung und Anpassung der Vorlauftemperatur mittels eines Reinforcement Learning Ansatzes – Q-Learning –  kann die Überhitzung der Räume durch  Sonneneinstrahlung im Vergleich zu der Standardheizkurve  effektiv reduziert und damit der Gesamtkomfort verbessert werden. Die Integration der  neuen Reglung am realen Gebäude wird mittels eines  Handlungsempfehlungssystems realisiert.
Virtuelle Inbetriebnahme in der Maschinenautomatisierung
Authors: Siegrist Daniel , Matsikis Alexandros , Dirbach Simon , Volz Artur , Bellalouna Fahmi
Published: April 2023

Basierend auf der erfolgreichen Nutzung von  Simulationsmethoden wie HIL, SIL, und MIL in  unterschiedlichen Industriezweigen, werden  Simulationsmethoden zunehmend interessanter für die  virtuelle Inbetriebnahme in der  Maschinenautomatisierung. Dieser Artikel stellt die  Methoden vor und beschreibt mögliche Anwendungsfelder  in der Maschinenautomatisierung. Des Weiteren wird ein vereinfachtes Auswahlverfahren basierend auf der  Anwendung während der Phasen des  Maschinenlebenszyklus vorgeschlagen. Anschließend wird der Einsatz von SEW-Komponenten mit einer hybriden  Methode mit Schwerpunkt auf HIL anhand einer  beispielhaften Demonstrationsmaschine untersucht und  bestätigt.
Biointelligente Produktionssysteme
Authors: Miehe Robert , Baumgarten Yannick , Shoshi Arber
Published: April 2023

Mit der biointelligenten Produktion wird eine nachhaltige  Wertschöpfung möglich. Dies erfordert sowohl die  Entwicklung technologischer Innovationen, die mit dem  Konzept der Biointelligenz vereinbar sind, als auch die  Entwicklung von Strukturen und Rahmenbedingungen, die  die nachhaltige Nutzung solcher Systeme ermöglichen. In  diesem Beitrag werden die Grundlagen der Biointelligenz erläutert und entsprechende Technologien sowie ein  möglicher Rahmen für eine biointelligente Produktion  vorgestellt. Abschließend werden die Herausforderungen der biointelligenten Produktion beschrieben.
DEVELOPMENT OF LEARNING MODELS IN WEB PROGRAMMING COURSES WITH COMPUTER-BASED LEARNING TUTORIALS
Authors: MULTAZAM Muhammad , SYAHRIAL Zulfiati , RUSMONO Rusmono
Published: April 2023

Web programming courses are practical courses that can only run with the help of computer devices. The content or learning content in web programming courses is in program code directly created with a computer. The models developed include conceptual models, procedural models, and physical models. The research method used is Research and Development (R&D) using the Dick & Carey instructional system design model combined with the Hannafin & Peck model. The learning model was tested for feasibility and effectiveness before being implemented. The learning model developed has four components: syntax, reaction principle, social system, and support system. The feasibility of the model is seen from the percentage of the results of the one-to-one evaluation, which is 91.47%, the small group evaluation is 94.88% and the field trial evaluation is 92%. The effectiveness test results can be seen from the increase in the post-test score with the pre-test reaching 68.7% and the percentage of the success rate of student studies who have carried out learning with the tutorial learning model reaching 83%. The result of this research is a web programming learning model computer-based learning tutorial that is effective for improving student learning outcomes in web programming courses.
ANALYZING DIGITAL DIVIDE AMONG UNIVERSITY STUDENTS OF PAKISTAN
Authors: IFTIKHAR Aatif , AHMED Naeem , SHAH Dr. Saif Ul Mujahid
Published: April 2023

An emergency shift to online education after Covid-19 brought many challenges for students and teachers, especially the university students living in the rural areas of Pakistan. So this study has focused on assessing the problems students faced while acquiring online education with special reference to the theoretical background of digital divide. It is a quantitative study which employed Heckman’s treatment effect model to analyze the impact of digital divide on university students’ performance. The results of the study indicate that online education further increases an already existing digital divide between have and have nots. Online education is a good alternate of face-to-face education in many cases however for ensuring maximum benefits of online education requires proper availability of gadgets and internet access along with training. Existing online education system in developing countries like Pakistan may be more suitable to teach theoretical subjects like social sciences which are subjective in nature however it is not much appropriate for teaching numerical subjects. The findings of the study direct a positive impact of digital divide due to the scarcity of necessary gadgets, internet access, family income, gender, field of study, age and location.
LIFE SATISFACTION OF OPEN EDUCATION HIGH SCHOOL STUDENTS REGARDING VARIOUS DEMOGRAPHIC
Authors: DEMIRBILEK Mesut , KESER Sitar
Published: April 2023

In the present study, the descriptive demographic characteristics, life satisfaction levels, and differentiation status of open education high school students according to various variables were revealed. The research was carried out with a sample of five hundred open education high school students via a survey model by means of convenience sampling. The findings obtained indicate that the life satisfaction levels of open education high school students were low. In addition, life satisfaction differed according to the variables age, families’ monthly income, and the reason for choosing open education high school. When the demographic characteristics of the open education high school students were examined, it was seen that the following information applied to the majority of them: (1) Most were female students, (2) between the ages of 15 and 20, (3) whose parents had primary school level or below education, (4) whose parents mostly did not work or only their fathers worked, (5) with an average monthly family income of five thousand TRY and below, (6) had mostly migrated from the Black Sea and Eastern Anatolia Regions to Istanbul, and (7) they chose open education high school mostly because of job requirements.
EXAMINING UNIVERSITY STUDENTS’ BEHAVIOURAL INTENTION TO DISTANCE LEARNING DURING COVID-19: AN EXTENDED TAM MODEL
Authors: SAYGINER Can
Published: April 2023

Learning was obliged to be transformed to distance learning due to the long-lasting COVID-19 lockdown period. This situation has brought to investigate the critical factors influencing students’ intention and actual use of distance learning tools. In this context, this study aims to evaluate the effects of distance learning, deriving independent variables adopted from ETAM. Data was gathered from 92 undergraduate students enrolled in five and other courses in Turkiye. Data were investigated via SmartPLS 3.0 through Structural Equation Modelling (SEM). Results indicate that Computer Anxiety had a negative impact on Self-efficacy. Self-efficacy had a positive influence on Experience. Experience and Enjoyment had positive effects on Perceived Ease of Use. Enjoyment had a positive influence on Perceived Usefulness. The proposed model explained 87.7% of the variance of the actual use of distance learning tools. Computer anxiety and selfefficacy, which were proposed to measure experience, made this study unique and valuable. This contributes to acknowledging higher education institutions and lecturers to understand the benefits and barriers of distance learning tools for students used during the unpredicted pandemics in the future.
Rethinking the principles of work forensic medical experts in emergencies cases with massive human casualties
Authors: Klevno Vladimir A. , Maksimov Aleksandr V. , Abramov Aleksei S.
Published: April 2023

For many years, the topic of the participation of forensic experts in the elimination of the consequences of emergencies with a large number of human casualties has remained relevant. Every year, there are more reports about problematic issues of the organization and provision of forensic medical support in cases of mass death of people, particularly in armed conflicts.
The presented report attempts to rethink the tasks and formulate the principles of forensic medical specialists who work in emergencies, including mass death and unknown disappearances of people.
Based on international and domestic experiences, work is needed to standardize procedures and algorithms for registering primary information and identifying signs of the deceased.
Standardized work algorithms and standardized forms are important for deceased identification because they simplify and formalize the registration, description, and subsequent information sharing on unidentified dead bodies, avoiding mistakes and omissions.
Laboratory studies of seismic wave propagation in inhomogeneous media using a laser doppler vibrometer
Authors: Nishizawa Osamu , Satoh Takashi , Lei Xinglin , Kuwahara Yasuto
Published: April 2023

We performed physical model experiments by utilizing a laser doppler vibrometer (LDV). Because LDV converts velocity of vibration to the Doppler shift frequency, it enables very precise measurements of ultrasonic waves without any resonating element that conventional transducers usually include. A piezoelectric transducer (PZT) was used as a source of elastic waves, and the waveform was measured in a very small area of about 400 μm in diameter by focusing the beam. We can easily perform very precise measurements of wave field in a physical model, and thus physical model experiments of wave propagation can simulate realistic seismic field observations. For models of inhomogeneous material, we used three granitic rocks with different grain sizes: Westerly granite (fine grained), Oshima granite (medium grained), and Inada granite (coarse grained). Large rock prisms, 300 × 300 × 80 to 90 mm, were used to prevent contamination by multiple reflections from the side ends in the earlier portion of waveforms. The direct P and S waves and reflected waves were identified by their travel times. Observations were made by long in-line, circular, and small-aperture arrays. When the rock grain size becomes comparable to the wavelength, transmitted waves are strongly attenuated by backward scattering, and a large amount of wave energy is transferred to the coda portion. Semblance plots in the time-slowness plane obtained from the small-aperture array suggest that incoherent waves become dominant as the grain size becomes large and comparable to the wavelength.
The 1978 Brooks Peninsula, Vancouver Island earthquakes
Authors: Spindler Chris , Rogers Garry C. , Cassidy John F.
Published: April 2023

A pair of Mw = 5.5 earthquakes occurred beneath the Brooks Peninsula on the northwest coast of Vancouver Island on 2 June and 25 July 1978. These are the largest and best-recorded earthquakes to date in the vicinity of northern Vancouver Island and the adjacent coast margin. A detailed study of these earthquakes was undertaken to examine the contemporary tectonics of this region, specifically the poorly understood interaction between the Explorer plate and the North American plate at the northern end of the Cascadia subduction zone. Both earthquakes were followed by well-defined aftershock sequences. A four-station temporary seismograph array deployed on the Brooks Peninsula following the 2 June mainshock allowed for accurate aftershock locations. This earthquake was located at 50.15° N, 127.84° W, based on the center of a 9-km-diameter circular region of aftershocks. The 25 July earthquake was located 4 to 7 km to the northeast of the June epicenter based on waveform comparison of the two events. Both earthquakes occurred at 15 to 16 km depth. The focal mechanisms as determined from body-wave modeling are nearly identical and show left-lateral strike-slip motion along a shallow north-dipping, east-west-striking fault. The focal mechanism and depth of these two earthquakes indicates that they were not megathrust events on the Explorer/North America plate boundary, but rather that they occurred within the North American plate, 5 to 10 km above the megathrust. The northeast-directed pressure axes for these earthquakes suggests coupling across the Explorer-North America segment of the Cascadia subduction zone, consistent with contemporary convergence of the Explorer Plate with the North American plate in a northeast-southwest direction.
Application of InP/ZnSe/ZnS Quantum Dots in the Treatment of Experimental Antibiotic-Resistant Endophthalmitis in vivo
Authors: Ponomarev V. O. , Kazaykin V. N. , Tkachenko K. A. , Vokhmintsev A. S. , Weinstein I. A. , Zhdanov A. E.
Published: April 2023

Purpose: modeling of experimental antibiotic-resistant endophthalmitis on laboratory animals model describing the interaction of quantum dots and a biological organism and its physicochemical and kinetic aspects.

Material and methods. The object of the study is laboratory New Zealand rabbits (2 male, age 4 months, weight 3.5 kg). The inflammation inductor is the culture of Methicillin-Resistant Staphylococcus Aureus (MRSA). 1 mg/0.05 ml of vancomycin in combination with 0.5 μg (0.01 %)/0.05 ml by a solution of quantum dots InP/ZnSe/ZnS 660 was intravitreally administrated to the first rabbit. 1 mg/0.1 ml of vancomycin was intravitreally administrated to the second rabbit. Dynamic observation of the clinical process was performed daily by photo registration of the front segment and ultrasonic sonography.

Results. The conjugate based on 1 mg/0.05 ml vancomycin coupled with 0.5 μg (0.01 %)/0.05 ml quantum dots InP/ZnSe/ZnS 660 demonstrated high anti-infectious activity against vancomycin-resistant MRSA. It was shown that the effect of the above solution on MRSA is described by the one-time ability of quantum dots by using electron microscopy. The presence of superoxide radicals O2–• generation in an aqueous solution of quantum dots under the action of blue light has also been proven by spectrophotometric method.

Conclusion. Conjugates based on quantum dots can be considered as one of the promising directions of treatment of antibiotic-resistant endophthalmitis.
Evaluation of the Anti-Infectious Activity of the Complex Based on Quantum Dots InP / ZnSe / ZnS 650 and Tobramycin Against Pseudomonas Aeruginosa Infection of the Cornea. Experimental Research
Authors: Shilovskikh O. V. , Ponomarev V. O. , Kazaykin V. N. , Tkachenko K. A. , Vokhmintsev A. S. , Weinstein I. A. , Rozanova S. M. , Kirf M. V. , Marysheva S. V.
Published: April 2023

Microbial keratitis (MK) is a homogeneous group of diseases accompanied by loss of the corneal epithelium, stromal leukocyte infiltration and/or destructive tissue breakdown, occurring when the protective mechanisms of the ocular surface are disturbed, which require an immediate set of therapeutic measures, including, first of all, massive etiotropic therapy, which is represented, as a rule, by broad-spectrum antibiotics (AB) and anti-inflammatory drugs. One of the most threatening MK pathogens is P. aeruginosa (PA) (Pseudomonas aeruginosa). Multiple drug resistance, the highest pathogenicity, numerous RA virulence factors dictate the need to search for new highly effective methods to combat MC, in the etiological structure of which RA dominates. The most promising direction in this area is the use of artificial fluorophores, in particular quantum dots (QDs). The objective of this study was to evaluate the anti-infectious activity of the complex based on InP/ZnSe/ZnS 650 quantum dots and Tobramycin against Pseudomonas aeruginosa infection of the cornea. As an object of study, laboratory New Zealand rabbits (No. 6) were studied — 2 females, 4 males, which were induced bacterial keratitis by introducing a nosocomial Ps strain. aeruginosa in the structure of the cornea. The following antimicrobial agents were used: Tobramycin solution 5 ml for epibulbar application and a bioconjugate based on QD InP/ZnSe/ZnS 650 and tobramycin. Laboratory animals were divided into 2 groups. Rabbits of the 1st group, after the manifestation of the clinical picture of microbial keratitis, received instillations of tobramycin drops into the conjunctival sac every 2 hours for 3 days with a complete absence of positive clinical dynamics and a subsequent transition from day 4 in order to anatomically preserve the eyeball to instillations of the CT InP/ZnSe/ZnS complex 650 + Tobramycin. Rabbits of the 2nd group received instillations of the CT + Tobramycin complex and showed positive dynamics in relation to the regression of symptoms from the 2nd day of therapy. As methods of dynamic observation, photoregistration of the anterior segment with fluorescein staining and optical coherence tomography of the anterior segment were used. A clinical experiment has demonstrated the highest efficiency of the InP/ZnSe/ZnS 650 + Tobramycin complex in relation to Pseudomonas aeruginosa strain resistant to Tobramycin monotherapy.
Bacterial Keratitis. Part 2. Topical Aspects of Treatment
Authors: Shilovskikh O. V. , Ponomarev V. O. , Kazaykin V. N. , Tkachenko K. A.
Published: April 2023

Bacterial keratitis (BC) is a threatening condition for the anatomy and function of the eyeball and requires an immediate complex of therapeutic measures. Effective treatment that preserves the anatomical and functional result of the organ of vision, including various non-surgical and surgical methods, is the basis for the treatment of CD. Drug therapy includes, first of all, massive etiotropic therapy, which is usually represented by broad-spectrum antibiotics, antiseptics and anti-inflammatory drugs. These combinations make it possible to competitively influence all links of the pathological process, showing an additive effect. Promising non-surgical means in the fight against bacterial infection of the cornea, in particular with resistant microorganisms, is the use of Quantum dots, Mitomycin C, Matrix metalloproteinases. The most radical surgical methods of treatment are based on therapeutic keratoplasty, the purpose of which is to excise the infectious focus of the cornea and restore its transparency through transplantation of donor corneal tissue, but this method has a number of disadvantages and limitations in its implementation. Autoconjunctival keratoplasty is the oldest method of treatment of progressive corneal ulcers and this method should be considered rather as temporary or preparatory before through keratoplasty, due to the lack of visual functions. The least radical and relevant surgical methods of CD treatment today are the use of Corneal Crosslinking, Microdiathermocoagulation, Cyanoacrylate glue, Amniotic membrane transplantation. The expansion of the arsenal of methods of influencing the microbial process of the cornea and their further study will allow for a quick response in response to the rapidly developing antibiotic resistance in the world.
Risk factors of carcinoma cervix
Authors: Hachina Akhter  , Ferdousi Begum
Published: April 2023

Background: Cervical cancer is a cancer of the cervix uteri. It may present with vaginal bleeding but symptoms may be absent until the cancer is in its advanced stage. Cervix is the commonest site for female genital cancer. Cancer cervix is the most common cancer in women in developing countries where screening facilities are inadequate. This study aimed to analyze the risk factors of carcinoma cervix.
Methods: This descriptive study was conducted in Chittagong Medical College Hospital, taking 100 randomly selected patients of carcinoma cervix for one year (July 2019 to June 2020). The patients were selected from the gynae ward of Chittagong Medical College Hospital.
Results: Among the study subjects, most of the respondents (32, 32.0%) belonged to 51-60 years old followed by (24, 24.0%) 41-50 years and >60 years of age. Maximum patients (84, 84.0%) were Muslim, followed by Hindu (14, 14.0). regarding occupation, a maximum (94, 94.0%) were housewives, and concerning marital status, most (88, 88.0%) of them were married. In this study, 36 (36.0%) patients had primary education followed by (30, 30.0%) secondary education. Most of the patients' spouses (32, 32.0%) were day laborers, followed by (24, 24.0%) service holders. In 78.0% of cases, the husband lived with the patients and 12.0% were apart but within the country and 10.0% live abroad. In 14.0% of cases, the husband had another sex partner. Among the study population, 18.0% of patients were habituated to chewing tobacco. Among the 100 patients multiparity (84.0%), early marriage (36.0%) early age of first intercourse (36.0%) and below average socioeconomic group (72.0%), and high-risk male partners (28.0%), and few multiple sex partner and STDs.
Conclusions: In developing countries like Bangladesh, the majority of cases of carcinoma cervix are diagnosed at an advanced stage. Most of the cases were from poor to middle socio-economic backgrounds. Multiparity, early marriage, early age of first intercourse, and high-risk male partner were the main risk factors for the development of carcinoma cervix.
Clinico-epidemiologic profile and perinatal outcome of patients with oligohydramnios in third trimester in a tertiary care hospital
Authors: Bumrah Sunaina , Grover Seema , Kaur Khushpreet , Rajora Parveen , Tapasvi Isha
Published: April 2023

Background: Oligohydramnios has an incidence of around 1-5% of total pregnancies. It is associated with adverse perinatal outcomes like preterm delivery, low birth weight, foetal distress, and passage of meconium and NICU admission. Aims and objectives were to study the risk factors associated with oligohydramnios in pregnancy and to evaluate the perinatal outcome in patients with oligohydramnios.
Methods: The present study was a prospective observational study of six months, which included 60 patients with gestational age >28 weeks, selected after verifying the inclusion and exclusion criteria. A detailed history and clinical examination done and relevant investigations sent. Patients were followed up postpartum till discharge from hospital.  
Results: The prevalence of oligohydramnios is found to be 8.5% in our study and there were more primigravida (55%). Oligohydramnios was idiopathic in 50% of our patients, followed by presence of hypertensive disorders in 20%. Caesarean delivery was required in 48.3% of the patients. In terms of perinatal outcome, 46.6% of the babies were low birth weight, 38.3% preterm, NICU admission in 26.6% and stillbirth rate was found to be 6.6%.
Conclusions: Oligohydramnios was an isolated finding in half of the cases and in these only adverse perinatal outcome noted was small for gestational age. When associated with risk factors, oligohydramnios was associated with increased perinatal morbidity and mortality in terms of prematurity, foetal distress, low birth weight, NICU admission, stillbirth.
A real-world evidence study to evaluate the efficacy of software-driven digital therapeutics on major adverse cardiovascular events, vitals, adherence to medication and lifestyle changes among patients with coronary artery disease or post-coronary interventions
Authors: Abhijeet Palshikar  , Chetan H. Gharat  , Kamlesh Patel
Published: April 2023

Background: Coronary artery disease (CAD), a leading cause of cardiovascular disease (CVD) mortality worldwide, is a major health concern in India due to the high rates of the disease. Acute coronary syndrome (ACS) is a prevalent form of CAD that requires prompt treatment. Digital therapeutics (DTx) is an emerging field that employs remote monitoring and behavioural changes to manage diseases, with promising outcomes in ACS and post-percutaneous coronary intervention (PCI) patients. This study evaluates the efficacy of a software-driven DTx intervention in enhancing outcomes for CAD patients.
Methods: This pilot, single-centred, prospective and real-world evidence cohort study aims to evaluate the effectiveness of a software-driven therapeutic intervention (LYFE) in patients with ACS and/or post-PCI. The study enrolled 30 patients over a 3-month follow-up period from October to November 2022. The main outcomes measured were changes in blood pressure, heart rate, medication adherence, the incidence of major adverse cardiovascular events (MACE), all-cause readmission, and lifestyle adherence at 1 and 3 months.
Results: The mean age of the patients was 53.2±12.1 years; 27 (93%) males and 2 (7%) were females. Mean BMI of the patients was 26.3±5.0. The mean difference for systolic blood pressure (SBP) and diastolic blood pressure (DBP) was 7.8±10.9 (p=0.001*), 3.7±5.7 (p=0.002*) respectively with statistically significant reduction, at 3 months. The 25 (83.3%) patients had controlled blood pressure at 3 months. 27 (90%) patients were adherent to the medication and physically active, while 3 (10%) inactive throughout the study period. No CVD death/major bleeding event was reported.
Conclusions: DTx improved medication adherence and blood pressure control in CAD, ACS with post-PCI patients during the study period.
Risk factors affecting the outcome of management of intertrochanteric fractures with dynamic hip screw in elderly patients: a retrospective, observational study
Authors: Bhosale Nanasaheb D. , Naikwade Deepak
Published: April 2023

Background: Among the different fixation procedures for intertrochanteric fractures, dynamic hip screw fixation is the most used therapy. Present study evaluated the risk factors affecting the outcome of intertrochanteric fractures managed by dynamic hip screw fixation.
Methods: This was an observational retrospective study conducted between March 2021 and February 2022. Patients with intertrochanteric fractures aged >60 years presenting within a week after incurring the fractures were enrolled. Evan’s and AO/OTA classification were used to categorize patients. “Failed” surgery was considered based on one of the following radiographic criteria. Functional outcomes were assessed at 6-months by Harris hip score (HHS).
Results: 40 patients were enrolled, majority being females (n=22, 55%) with mean age of 67.79±4.76 years. Commonest mode of injury was fall while standing (n=32, 80%). Based on Evans classification, majority cases were stable fractures (n=25, 62.5%). By the AO/OTA classification, majority patients were under A2 class (n=22, 55%). The 30 cases (75%) had outstanding to good outcomes based on HHS assessment. 8 patients (20%) had “failed” surgical outcomes of which commonest presentations were >20 mm lag screw pull-out (n=4, 10%) and mal union (n=2, 5%). Mean age, and number of obese patients were found to be significantly greater in the “failed fracture” subgroup, versus “united fracture” subgroup (p<0.05). Significantly greater number of cases in “failed fracture” subgroup belonged to Evans’ class IV or V, and to A3 class of AO/OTA classification (p<0.05).
Conclusions: Patient factors like greater age, obesity and intertrochanteric unstable fractures as indicated by Evans’ and AO/OTA classification were risk factors affecting the outcome of intertrochanteric fractures, managed with dynamic hip screw.
Evaluating the effectiveness of government policies and interventions in addressing the demand and supply gap of oxygen beds in India
Authors: Mishra Richa
Published: April 2023

Corona virus pandemic has impacted a few countries in different degrees, however for most governments, managing the issue has been an unrivalled trouble. This section plans to depict the change in perspective that the Corona virus pandemic has caused in India's essential medical care industry throughout the last 1.5 years. The pandemic has impacted even the world's most exceptional medical services frameworks, affected India's medical services area, and altogether affected government and corporate partners' arrangements for medical services change. This section talked about the first and second rushes of the Covid in India and endeavoured to dissect the issues with general wellbeing during that time. It gives a course of events of urgent minutes in the spread of the scourge in India and all over the planet; as well as how India's financial and medical care policies managed the issue. The review proposes an essential methodology for controlling the spike in demand for clinical oxygen that encourages independence at the state level to fulfil the gauge necessity while at the same time using different wellsprings of oxygen creation and conveyance to satisfy the pinnacle need.
A study unveiling online buying behavior of zoomers with respect to Mumbai region
Authors: Binani Rishika , Kapadia Priyam , Agashivala Sachi , Vasa Vatsal , Ved Anjali
Published: April 2023

Generation Z has emerged as one of the most mystifying consumers as they are tech-savvy, global, visual, social, technologically active, digitally connected and educated users of technologies in the marketplace. Gen Z is made up of young people who are born between 1997-2010. Our definition of acronym Gen Zhereby explains the entire mindset of zoomers.

"Googling" before purchasing: Gen Z tends to research products and read reviews online before making a purchase.

Embracing e-commerce: Gen Z has grown up with the convenience of online shopping and tends to prefer it over traditional brick-and-mortar stores.

Non-traditional payment methods: Gen Z is more likely to use mobile payments and other digital payment methods, such as Google pay, Paytm or PayPal, instead of cash or credit cards.

Zero tolerance for bad user experiences: Gen Z expects a seamless, user-friendly online shopping experience, and will quickly abandon a website or app if it doesn't meet their expectations.

This research intends to study online buying behavior of the most important and the youngest generation. It is extremely significant and valuable to study this segment of society as this is the generation who started operating mobile phones even before knowing- How to eat?

The research undertaken intends to understand the impact of COVID which has increased the frequency of online transactions on the face of safety back end by indolence.
Pirólisis del tereftalato de polietileno y poliestireno para la síntesis de nanoestructuras de carbono: una revisión bibliométrica
Authors: Ordoñez Agredo Katerine , Coral Coral Diego Fernando , Rodríguez Páez Jorge Enrique , Diosa Astaiza Jesús Evelio , Mosquera Vargas Edgar Eduardo
Published: April 2023

Este artículo se presenta una revisión bibliométrica del proceso de pirólisis de dos tipos de polímeros: tereftalato de polietileno y poliestireno (PET y PS, por sus siglas en inglés), para identificar las condiciones necesarias y así optimizar el proceso de pirólisis, garantizando la producción mayoritaria del producto gaseoso con el objetivo de llevar a cabo un segundo proceso, el crecimiento de nanoestructuras de carbono. Precursores gaseosos como el metano, acetileno y etileno son hidrocarburos esenciales para el crecimiento de dichas nanoestructuras, de las que se destacan según la literatura, una variedad de nanotubos de carbono de pared simple, de pared doble, y de pared múltiple (SWCNT, DWCNT y MWCNT, por sus siglas en inglés) y nano fibras de carbono (CNF, por sus siglas en inglés). En este trabajo se realiza un análisis de las condiciones más relevantes para optimizar el proceso de pirólisis de polímeros, es decir, disminuir la temperatura y tiempos de reacción y mejorar la composición de los productos obtenidos del proceso pirolítico. Finalmente se dan a conocer los reportes más relevantes de la pirolisis de los polímeros expuestos en la literatura.
Cytokine IL6, but not IL-1β, TNF-α and NF-κB is increased in paediatric cancer patients
Authors: Synakiewicz Anna , Stanislawska-Sachadyn Anna , Owczarzak Anna , Skuza Malgorzata , Stachowicz-Stencel Teresa
Published: April 2023

Cytokines are responsible for maintaining homeostasis as cell growth, differentiation, migration and apoptosis mediators. They play a pivotal role in immune responses to inflammatory reactions. In oncological diseases, the cross-talk between cells of the immunological system and cells of the tumour microenvironment is led by cytokines. Also, the overproduction of cytokines may change the tumour microenvironment and stimulate tumour development and growth. To test whether pro-inflammatory cytokines or associated with them transcription factor levels are changed in a group of 53 paediatric cancer patients, serum levels of IL-1β, IL-6, TNF-α and NF-κB were assessed and compared to measures in 25 healthy controls. Increased levels of IL-6 were found among patients in active oncological treatment (P=0.002) but not among patients whose treatment was completed. Our data suggest that IL6, but not IL-1β, TNF-α and NF-κB, is elevated as a result of the immune response in the microenvironment around the tumour and in blood cancers, among patients who were not infected at the time of blood collection. Thus, IL6 levels might serve as a potential biomarker of oncohematological diseases.
Promising Recycling of Aspiration Dust and Interstitial Clay in the Production of Earthquake-Resistant Bricks
Authors: Safronov E.G. , Abdrakhimov V.Z. , Naryzhnaya N.Yu. , Silinskaya S.M.
Published: April 2023

It is noted that inter-shale clay is an substandard raw material, since it is almost impossible to obtain earthquake-resistant bricks on its basis without the use of high-quality cleaners. A method for obtaining a seismic-resistant brick M125-M150 was obtained on the basis of substandard interstitial clay with the use of ferrous metallurgy waste — aspiration dust used as a thinner, which participates in the formation of the structure and is a frame, thanks to which the product is not deformed during the firing process.
Application of Geophysical Survey Methods in Projects for the Elimination of Objects of Accumulated Environmental Damage
Authors: Chertes K.L. , Bukin A.A. , Mashkova A.I. , Lavrusevich A.A. , Tupitsyna O.V.
Published: April 2023

The analysis is carried out and the relevance of the application of geophysical methods for the elimination of objects of accumulated environmental damage is shown. The conclusion is made about the effectiveness of the proposed methodology, which provides a reduction in the duration of engineering surveys, as well as the cost of PIR by 1.5 times compared with traditional methods.
On the Background Values of the Geochemical Spectra of Microelements of the Solid Phase of Snow During their Comparative Analysis in the Cities of Tobolsk And Tyumen
Authors: Zakharchenko A.V. , Pasko O.A. , Tigeev A.A. , Moskovchenko D.V.
Published: April 2023

Local features of the geochemical spectra of trace elements in the snow dust of Tobolsk and Tyumen were revealed using a hierarchical cluster analysis of the normalized values of their content. Geochemical spectra of snow sampling points were studied in residential and industrial areas, as well as in significantly remote areas (conditional background). Four clusters were identified in Tobolsk and five in Tyumen, for each of them characteristic geochemical spectra and pollution sources were detected.