bluuebunny/crossref_metadata_2025 huggingface dataset:
WinterLab: Developing a Low-Cost, Portable Experiment Platform to Encourage Engagement in the Clectronics Lab
Authors: Rouble Maclean , Dobbs Matt , Gilbert Adam
Published: March 2023

Encouraging student engagement is a key aim in any educational setting, and allowing students the freedom to pursue their own methods of solving problems through independent experimentation has been shown to markedly improve this. In many contexts, however, allowing students this flexibility in their learning is hampered by constraints of the material itself, such as in the electronics laboratory, where expensive and bulky equipment confines the learning environment to the laboratory room. Finding ourselves in the position of teaching one such laboratory course at the undergraduate level, we sought to encourage students to learn through independent investigation and the pursuit of personal projects, by providing a more flexible and inquiry-based learning environment and allowing them to take their measurement equipment—and their learning—beyond the laboratory itself. We present this project as a case of design both for and by students, with the lead designer undertaking the project after attending the course in question, and pursuing its development as a foundational step in their graduate career. We discuss the challenges and opportunities we encountered over the course of the design and development process, and the eventual key output of the project: a portable, low-cost, integrated electronics experimentation platform called the WinterLab board.
The Impacts of Interactivity and Engagement for the Digital Learner
Authors: Heard Gabrielle
Published: March 2023

In an Introduction to Digital Practices course, university students were unable to apply their newfound software program knowledge to design intricate art projects. A digital guide called a Tool Lab was created so that students could be pre-introduced to the tools and functionality of targeted software programs. Designed with the concepts of Bloom’s Taxonomy, the Tool Lab eLearning guide was built in PowerPoint and consisted of YouTube video tutorials. At the end of the Tool Lab modules, students were required to complete a quiz in Survey Monkey. In the end, students only used the Tool Lab modules after they had been introduced to the software programs in a lecture. Failure includes a lack of structure in Tool Lab design, an influx of unnecessary material, a loss of student engagement, and minimal incentive to complete follow-up quizzes.
Faltas en el aprendizaje del modelado de clases y casos de uso: una revisión sistemática
Authors: Ucán-Pech Juan-Pablo , Aguilar-Vera Raúl-Antonio , Díaz-Mendoza Julio-César , Gómez-Gómez Omar-Salvador
Published: March 2023

En este artículo se presenta una revisión de los estudios primarios que abordan la identificación de faltas durante el aprendizaje de los diagramas de casos de uso (DCU) y de los diagramas de clase (DC) en los últimos 10 años. Este trabajo es el inicio de un proyecto de investigación relacionado con la detección de faltas en los diagramas UML. Este artículo presenta un análisis del estado del arte con respecto a la tipificación de faltas en DCU y DC, con el objetivo de identificar oportunidades y brechas de investigación. Se encontraron 20 documentos de acuerdo con los criterios de inclusión y exclusión establecidos mediante la metodología utilizada para la revisión sistemática de literatura. Considerando la relevancia del tema, se puede observar que es limitada la investigación relacionada con la detección de faltas en los diagramas UML tanto en DCU como DC.
Tecnologías inciertas: ventajas y límites de las metodologías de diseño de tecnologías mediante procesos de innovación participativos, co-creación y agilidad
Authors: Vidal-Rojas Juan-Carlos , Cereceda-Otárola Marcos-Rodrigo
Published: March 2023

Se presenta la experiencia de tres procesos de innovación de base tecnológica aplicando técnicas de diseño y desarrollo participativo de tecnologías, técnicas de co-creación y agilidad. El análisis de los tres procesos da cuenta del papel que pueden tener los investigadores sociales en el escalamiento y la articulación social de los productos obtenidos, y el papel de los obstáculos en los procesos de desarrollo. Se ponen en relieve las potencialidades que tienen las metodologías de diseño participativo de tecnologías en la creación de comunidades de usuarios, la experimentación en métodos con técnicas de co-creación y lo limitadas que resultan en algunos casos las metodologías ágiles para crear articulaciones sociales, lo cual le resta posibilidad de éxito una vez finalizado el proceso de desarrollo.
Uso de desechos de yuca (Manihot esculenta Crantz) en la remoción de verde y naranja de metilo
Authors: Becerra-Quintana Rubén , Lozada María , Quintana-Mendoza José , Torres Alexandra , Henao José
Published: March 2023

Empleando desechos de raíz de yuca (Manihot esculenta Crantz), se sintetizó un material del tipo biochar para la remoción de colorantes. Se trabajó con la harina de yuca sometida a 673 K y 80 mbar. El material obtenido se caracterizó por termogravimetría (TGA), calorimetría diferencial de barrido (DSC), espectroscopía de infrarrojo ATR (ATR-IR), microscopía electrónica de barrido (SEM) y difracción de rayos X de muestras policristalinas (PDRX), logrando demostrar la formación de un material estable térmicamente con agregados esféricos, diámetros de 10 µm, una estructura amorfa del tipo lignocelulosa y estructura cristalina de almidón tipo A. El biochar obtenido demostró una capacidad de adsorción de naranja de metilo de 116,4 ± 0,2 mg/g y para el verde de metilo de 94,2 ± 0,2 mg/g a 308 K, lo anterior valida la capacidad de este material para remediar agua contaminadas.
Springs Distribution and Biophysical Mapping as a Strategy to Preserve Water Sources in Semarang City, Indonesia
Authors: MARTUTI Nana Kariada Tri , SETYOWATI Dewi Liesnoor , RAHAYUNINGSIH Margareta , DEWI Nur Kusuma , SIDIQ Wahid Akhsin Budi Nur , MUTIATARI Dhita Prasisca
Published: March 2023

Springs in Semarang City, concentrated in Gunungpati District, are threatened by urbanization and massive development. It needs to be conserved through comprehensive strategies based on existing conditions. Therefore, this study aims to describe the distribution and biophysical conditions of the springs for water source conservation and sustainability. The study was conducted by identifying and mapping the biophysics condition and vegetation of 114 springs in Gunungpati District, Semarang City. The majority of the springs have low discharge volumes below 1 L/s, which is caused by ecosystem destruction around spring areas. Then, five springs were chosen for sampling, which have fairly good physics-chemical conditions and however polluted with E. coli and coliform bacteria from domestic and agricultural waste. Involving community-based conservation action through revegetating, building up water reservoir infrastructure, providing information boards, and enforcing spring protection culture can increase spring areas preservation. Furthermore, economic, social, and cultural studies on spring protection should be conducted to determine the protection zone priority, analyze the appropriate support system, and threaten potential in water sources sustainability.
Dietary supplementation of Spirulina platensis and Saccharomyces cerevisiae on egg quality, physiological condition and ammonia emission of hens at the late laying period
Authors: Wahyuni H. I. , Yudiarti T. , Widiastuti E. , Sartono T. A. , Agusetyaningsih I. , Sugiharto S.
Published: March 2023

The study was aimed to evaluate the effect of Spirulina platensis and Saccharomyces cerevisiae or its combination on egg quality, physiological condition and ammonia excretion of hens at the late lay-ing period. At 81 weeks old, 144 Lohmann Brown layer chickens were divided into four treatment groups included CON (hens fed basal feed), SP (basal feed + 0.3% S. platensis), SC (basal feed + 0.2% S. cerevisiae), and SPSC (basal feed + 0.3% S. platensis + 0.2% S. cerevisiae). At the end of the study, eggs, intestinal mucosa, digesta, excreta and blood sample were collected. Results showed that albumin index was higher (P<0.05) in SPSC group than in CON, SP and SC. The yolk index and yolk colour were greater (P<0.05) in SP and SPSC groups than in CON and SC. The erythrocyte values were high-er (P<0.05) in SP group compared to CON, SC and SPSC groups. The ileum pH was higher (P<0.05) in SP than in CON, SC and SPSC. Lactic acid bacteria counts were lower (P<0.05) in the caecum of SC and SPSC than in CON and SP groups. The lower (P<0.05) counts of lactose-negative Enterobacte-riaceae were shown in SC and SPSC than in CON. The excreta pH was lower (P<0.05) in SC group compared to CON, SP and SPSC groups. There were better (P<0.05) protein digestibility coefficient and nitrogen retention in SPSC group than others. Faecal ammonia decreased (P<0.05) in SP, SC and SPSC groups. In conclusion, S. platensis improved egg yolk index and colour, increased erythrocyte counts and played an important role in maintaining the balance of bacteria in the intestine resulting in reduced ammonia excretion. Dietary inclusion of S. cerevisiae reduced ammonia excretion of laying hens during the late laying period.
Spatial and Sonic Monstrosities in William Hope Hodgson’s “The Whistling Room”
Authors: Poncarová Petra Johana
Published: March 2023

The article focuses on the corpus of tales featuring “Carnacki, the Ghost-Finder” by the British author William Hope Hodgson, an influential figure in the history of horror, fantastic literature, and speculative fiction. Drawing both on classical works of criticism by Tzvetan Todorov and Dorothy Scarborough and on the rather scarce corpus of scholarship devoted to Hodgson himself, the essay analyses the employment of space and sound in “The Whistling Room”.
The State at Play: Iain M. Banks’s Gaming Galactic Empires
Authors: Horová Mirka
Published: March 2023

This article sets out to explore the dynamics of play in three selected science-fiction novels by the contemporary Scottish author Iain M. Banks. Drawing on the typology of literary play designed by the German theoretician Wolfgang Iser, the article focuses particularly on Banks’s second novel from the Culture series, The Player of Games (1988), concentrating on the ludic dynamics that inform and form these texts in narrative, discursive and thematic terms. Highlighting the author’s complex conceptual critique of empire and civilisation and their contested relationship with the individual, the article is especially interested in uncovering the intricacies of power paradigms in the context of Banks’s bespoke, ever-ambivalent vision of a cosmic utopia and its counterparts, where the interconnectedness of being and playing is performed on key levels.
"Anlatma İzni" Kavramı Odağında Filistinli Madun Kimliğinin Haber Anlatı Diline Yansıması
Authors: Köse Hüseyin , Çelik Aytekin
Published: March 2023

Madun (subaltern) kavramı, özünde toplumsal hareketlilik noktalarına temas etme olanakları veya erişimleri engellenmiş kişi, grup veya sınıfları ifade eder. İster yerel ve bölgesel, isterse ulusal ve küresel ölçekte olsun, maduna atfedilen kimlik ve bu kimliğe eşlik eden bilinç formları genellikle amaçlı bir söylem stratejisi içinde ve dil aracılığıyla üretilir. Haber metni ve görselleri de bu dilin önemli bir boyutunu oluşturur. Söz konusu dil, madunu yalnızca belli stereotipler içine hapsederek damgalamakla kalmaz, aynı zamanda madun kimliği ve diline yeterince görünür olma ve dolaşım hakkı tanımayarak da sınırlayıcı bir işlev görür. Çalışma bu çerçevede, madun kimliği ve dilinin uluslararası haber anlatılarına yansıma biçimlerinin mağduriyeti ebedileştiren bir işlev gördüğü varsayımından hareketle, Edward Said’in “anlatma izni” kavramı odağında Filistinli madun kimliği ve gerçeğinin haber anlatılarına yansıma ve çerçevelenme biçimlerini irdelemeyi amaçlamaktadır. Bir başka deyişle, çalışmada birbirine karşıt iki haber çerçeveleme eğiliminin “anlatma izni” kavramının içerdiği siyasal ve tarihsel önermeyle bağını kurmak hedeflenmektedir. Bu amaçla, yayın politikası bakımından birbirine karşıt iki uluslararası haber kanalı olan FOX News ve El Cezire televizyonlarının Filistinli madun kimliği ve gerçeğini farklı biçimlerde kodlayarak, izler-kitlenin zihninde söz konusu kimliğe ilişkin farklı anlamlandırma ve yorumlama çerçeveleri kurduğunu iddia ediyoruz. Her iki haber çerçeveleme türü arasında bir karşılaştırma yapmayı amaçlayan çalışmada, seçilen haber içeriklerinin analizinde Norman Fairclough’un söylem çözümlemesi yönteminden yararlanılmıştır. Çalışmada sonuç olarak, her ne kadar birbirine zıt gibi görünse de, her iki haber anlatı kurgusu ve söyleminde de, derin bir ideolojik tutulmanın getirdiği kimlik yapılandırma amaçlı “öteki” vurgusunun ön plana çıkarıldığı bulgulanmıştır.
Suriye Krizinde Mezhepçiliğin Araçsallaştırılması
Authors: Akkan İbrahim , Aksu Fuat
Published: March 2023

2011 Suriye kriziyle birlikte Sünni-Şii ayrımı Ortadoğu bölgesindeki siyaset açısından en önemli faktörlerden biri haline gelmiştir. Özellikle Suriye’deki çatışmalarda mezhep gruplarının birbirlerini varoluşsal birer tehdit olarak algılamasıyla krizde zaman zaman mezhepsel bir boyut öne çıkmıştır. Fakat bu dönüşüm, temel olarak mezhepçiliğin tarihsel köklerine dayanmanın ötesinde, liderin ve siyasi elitlerin iktidarın güvenliğini sağlamak için mezhepsel kimlikleri birer araç olarak kullanmasının bir sonucu olarak ortaya çıkmıştır. Bu makale Suriye krizinde mezhepsel araçsallaştırmanın kimler tarafından, nasıl yapıldığını ve bu politikanın çatışmaları ne yönde etkilediğini tartışmaktadır. Makalede Suriye krizinin karmaşık mezhepsel boyutunun primordializm yaklaşımıyla açıklanamayacağı görüşünden hareket edilmektedir. Bu bağlamda primordializm yerine Enstrümantalizm yaklaşımı kullanılarak Beşar Esad yönetiminin mezhepsel kimlikleri iktidarının sürekliliğini sağlamak amacıyla araçsallaştırdığı savı tartışılmaktadır. Bunun için de Suriye’de siyasal iktidarın söylem, eylem ve politikaları incelenerek Suriye krizinde mezhepçiliğin nasıl araçsallaştırıldığı açıklanmaktadır.
Suriye krizinde mezhepçiliğin araçsallaştırılması politikasının Esad’ın çatışmaları kendi lehine çevirmesinde ve varlığını korumasında önemli bir yere sahip olduğu görülmektedir. Öte yandan bu politikanın birçok olumsuz sonucu olduğu ve tehlikeli bir süreci beraberinde getirdiği de göz ardı edilmemelidir. Mezhepçiliği araçsallaştırma politikası, toplumun kimlik çizgilerine göre bölünmesi, mezhep grupları arasındaki hoşgörünün ortadan kalkması ve Ortadoğu bölgesinde kimlik temelli düşmanlıkların ortaya çıkması gibi nesilleri etkileyecek sorunlara yol açmıştır. Bu da mezhepçiliğin araçsallaştırılmasının kısa vadede avantaj sağlayan bir politika olmasına rağmen uzun vadede büyük sorunlar yaratacağını göstermektedir.
Does the Functional Load Principle Predict How Important Phonemic Contrasts Are to Intelligibility Among ELF Users? A Partial Replication of Munro and Derwing (2006) From an ELF Perspective
Authors: O’Neal George , Latham Lance
Published: March 2023

The Functional Load (FL) principle predicts that high FL phonemic contrasts, such as /i:/ and /ɪ/, contribute more to the mutual intelligibility of pronunciation than low FL phonemic contrasts, such as /u:/ and /ʊ/. In order to assess whether the FL principle accurately predicts intelligibility under English as a Lingua Franca (ELF) conditions, this study partially replicated the first study to empirically support the FL principle: Munro and Derwing (2006). Chinese speakers of English recorded 24 sentences containing target words with high and low FL phoneme substitutions, and 171 Japanese university students listened to the sentences and transcribed the target words into standard orthography. The hypothesis of this study is that the target words with high FL phoneme substitutions will be less intelligible than the target words with low FL phoneme substitutions. The results showed that the target words with high FL phoneme substitutions were indeed lower in intelligibility than the target words with low FL phoneme substitutions, and furthermore cumulative high FL phoneme substitutions lower intelligibility even more. The results are consistent with Munro and Derwing’s (2006) finding that high FL phoneme substitutions lower comprehensibility more than low FL phoneme substitutions, and thus this study claims to have replicated one aspect of their study even under ELF conditions.
The state-trait model of cheerfulness and social desirability: an investigation on psychometric properties and links with well-being
Authors: Lau Chloe , Li Catherine , Quilty Lena C. , Saklofske Donald H. , Bruno Francesco , Chiesi Francesca
Published: March 2023

Ruch and colleagues (Ruch, Willibald, Gabriele Köhler & Christoph Van Thriel. 1996. Assessing the “humorous temperament”: Construction of the facet and standard trait forms of the state-trait-cheerfulness-inventory — STCI. Humor 9(3–4). 303–340) postulated high cheerfulness, low seriousness, and low bad mood contribute to exhilaration and enjoyment of humor. Although robust findings have corroborated that cheerfulness is associated with well-being and greatly enhances one’s social desirability, no studies have investigated the effects of social desirability on the assessment of cheerfulness. For this study, 997 undergraduate students completed the State-Trait Cheerfulness Inventory (STCI) and validity measures. Exploratory factor analyses that controlled for social desirability suggest several items on the STCI cheerfulness subscale loaded on social desirability, whereas seriousness subscale items showed few positive loadings on social desirability and bad mood subscale items loaded negatively on social desirability. Despite associations with social desirability, items overall showed strong loadings onto their respective factors. Factor loadings free of social desirability ranged from 0.39 to 0.84 in cheerfulness, 0.49 to 0.76 in seriousness, and 0.50 to 0.81 in bad mood. Cheerfulness, seriousness, and bad mood subscale scores demonstrated partial correlations in the expected directions with well-being when controlling for social desirability, albeit smaller in size but not significantly different. The STCI scores demonstrated strong psychometric properties with good reliability, structural validity, and criterion validity when controlling for social desirability.
A unified account of the multiple applications of German D-pronoun
Authors: Bittner Dagmar
Published: March 2023

The paper discusses the broad and seemingly diverse uses of the German D-pronoun. It is argued that the pronoun carries the invariant semantic feature [+distance] and that all its various uses are derived from this feature. That is, the D-pronoun expresses varying forms of distance between the referent of the pronoun and another discourse variable that functions as the perspectival center. The diverse uses of the D-pronoun arise from the specific ways in which the feature [+distance] is adapted to the relevant domain of application. Overall, the analysis considers seriously Jakobson’s proposal that the grammatical architecture of language is built on invariant semantic features.
Spin-dependent phenomena at chiral temporal interfaces
Authors: Mostafa Mohamed Hesham Mohamed , Mirmoosa Mohammad S. , Tretyakov Sergei A.
Published: March 2023

Temporally varying electromagnetic media have been extensively investigated recently to unveil new means for controlling light. However, spin-dependent phenomena in such media have not been explored thoroughly. Here, we reveal the existence of spin-dependent phenomena at a temporal interface between chiral and dielectric media. In particular, we show theoretically and numerically that due to the material discontinuity in time, linearly polarized light is split into forward-propagating right-handed and left-handed circularly polarized waves having different angular frequencies and the same phase velocities. This salient effect allows complete temporal separation of the two spin states of light with high efficiency. In addition, a phenomenon of spin-dependent gain/loss is observed. Furthermore, we show that when the dielectric medium is switched back to the original chiral medium, the right- and left-handed circularly polarized light waves (with different angular frequencies) merge to form a linearly polarized wave. Our findings extend spin-dependent interactions of light from space to space-time.
Study of mechanical properties of epoxy/graphene and epoxy/halloysite nanocomposites
Authors: Lapčík Lubomír , Sepetcioğlu Harun , Murtaja Yousef , Lapčíková Barbora , Vašina Martin , Ovsík Martin , Staněk Michal , Gautam Shweta
Published: March 2023

This article aimed to compare various mechanical properties of epoxy/graphene and epoxy/halloysite nanocomposites. Graphene nanoplatelets (GnPs) and halloysite nanotubes (HNTs) were used as fillers at different concentrations. The studied fillers were dispersed in the epoxy resin matrices. Elastic–plastic mechanical behavior modulation was observed utilizing the fillers’ nanoparticles and carboxyl-terminated butadiene–acrylonitrile copolymer rubber-modified epoxy resin. The hypothesis of the possible preceding inter-particle gliding of the individual GnPs in the complex resin nanocomposite matrix during mechanical testings was also confirmed. Increased ductility (elongation at break increased from 0.33 mm [neat matrix] to 0.46 mm [1 wt% GnPs] [39% increase]) and plasticity of the GnP nanocomposite samples were observed. In contrast, the decreasing mechanical stiffness as reflected in the decreased Young’s modulus of elasticity (from 3.4 to 2.7 GPa [20% decrease]) was found for the epoxy/HNT nanocomposites. The obtained dynamic stiffness of the investigated nanocomposites confirmed the complexity of the mechanical response of the studied material systems as a combination of the ductile and brittle phenomena.
Effects of CaO addition on the CuW composite containing micro- and nano-sized tungsten particles synthesized via aluminothermic coupling with silicothermic reduction
Authors: Cheng Chu , Wang Xinyu , Song Kexing , Song Ziwei , Dou Zhihe , Zhang Mengen , Liu Haitao , Li Xiaoheng , Niu Liye
Published: March 2023

CuW composite fabricated by powder metallurgy using ultrafine metal powders as raw materials has the disadvantages such as uneven microstructure and low compactness. A novel method of synthesizing an as-cast CuW composite ingot via an aluminothermic coupling with silicothermic reduction is presented; a low-melting-point CaO–Al2O3–SiO2 slag is formed by adding CaO as a slag former, effectively reducing Al2O3 inclusion in the CuW composite. In this study, the effects of CaO addition on the novel synthesis of the CuW composite via the aluminothermic coupling with silicothermic reduction are investigated. The result shows that CaO affects the removal of large particles (≥6 µm) but not the removal of small particles (≤4 µm). With the increase in the ratio of CaO ranging from 0 to 1.0, the inclusions in the CuW composites gradually transform from Al2O3 to calcium aluminates, which are conducive to the separation of the metal and slag. The contents of Si and O in the CuW composites gradually decrease from 9.40 and 14.00% to 6.10 and 3.50%, respectively, while those of Al and Ca gradually increase from 2.54 and 0.02% to 3.83 and 0.26%, respectively.
Microencapsulation of polymeric phase change materials (MPCM) for thermal energy storage in industrial coating applications
Authors: Patil Niraj Govinda , Chaudhari Soham Sharad , Mahanwar Prakash Anna
Published: March 2023

In recent years, energy has become an important factor in overall development. Most of the energy comes from fossil fuels which are nonrenewable and harmful to our environment. It has become important to develop new application technologies that utilize thermal energy storage (TES) technology. Energy storage technology based on PCMs is a cutting-edge research area with a wide range of potential applications. But the biggest problem of phase change material is its leakage problem, for that the researchers have set up a solution i.e., the microencapsulation techniques. This paper gives an overview of the synthesis of (MPCM) microencapsulated phase change material by using different methodologies and their applications in industrial coatings. Corrosion is the biggest problem in industrial coatings which reduces the working time span and overall performance of the coatings. The incorporation of the micro-PCMs in industrial coatings increases workability as well as the overall performance of the coatings. This review covers the use of MPCM in various industrial coating applications, challenges, and their future directions are also discussed.
Determination of the Existence of Liquid Metal Embrittlement Cracks in Resistance Spot-Welded Advanced High-Strength Steel
Authors: Dong Wufeng , Pan Hua , Lei Ming , Wang Shujuan , Ding Kai , Gao Yulai
Published: March 2023

The characteristics of liquid metal embrittlement (LME) cracks combined with the location, amount, and length of the resistance spot-welded joint of galvanized advanced high-strength steel were comprehensively investigated in this study. To better illustrate the features of LME cracks, a multilayer grinding and polishing technique was employed to more comprehensively reflect the existence of LME cracks compared with that of a single-layer technique. Based on the crack observation results of the cross section of the center weld, the longest type-I and type-II cracks were approximately 322.2 and 106.7 μm, respectively. On the contrary, the longest type-I and type-II cracks were approximately 1,062.9 and 194.7 μm, respectively, for the multilayer grinding and polishing technique. The existence of liquid zinc for more time and the resultant tensile stress at the center of the weld can trigger crack propagation, eventually resulting in type-I cracks that are longer than type-II cracks. Similarly, severe LME cracks mainly exist in the central position of the welded joint, implying that temperature and stress can have a crucial effect on the formation and propagation of LME cracks.
Airtightness Performance Test and Failure Models for Low-to-Vacuum Maglev Train Tunnel Joints
Authors: Shi Long , Wang Dongyuan , Zhou Jianjun , Cui Kai
Published: March 2023

The airtightness at the joints of segment lining structures is one of the critical problems for low-to-vacuum maglev train tunnels that needs to be addressed. A new apparatus was designed to test the airtightness performance of the gasket-in-groove at longitudinal and circumferential joints. Based on the test results, four mechanical models based on the theory of elastic mechanics were developed to describe the short-term and long-term sealing failure behaviors of longitudinal and circumferential joints, which are subjected to vacuum pressure on one side of the gasket, and the corresponding air-leakage equations for contact interface were also deduced. The test results show (1) a higher initial contact pressure in the gasket-in-groove would result in faster stress relaxation; (2) a greater initial contact pressure would result in better joint sealing; and (3) for the same initial contact pressure, the sealing capacity of longitudinal joints is significantly better than that of circumferential joints. The test results are in good agreement with the models. The developed models can be used to interpret the sealing failure mechanism through the gasket contact pressure path. Moreover, the mechanical models show that the sealing capacity of the circumferential joint gasket is positively correlated with the airtightness coefficient and the gasket equivalent Poisson’s ratio, whereas the sealing capacity of the longitudinal joint gasket is positively correlated with the airtightness coefficient, the gasket equivalent Poisson’s ratio, as well as the tunnel outer diameter, and negatively correlated with the gasket width.
Increasing depth distribution of Arctic kelp with increasing number of open water days with light
Authors: Castro de la Guardia Laura , Filbee-Dexter Karen , Reimer Jillian , MacGregor Kathleen A. , Garrido Ignacio , Singh Rakesh K. , Bélanger Simon , Konar Brenda , Iken Katrin , Johnson Ladd E. , Archambault Philippe , Sejr Mikael K. , Søreide Janne E. , Mundy C. J.
Published: March 2023

Kelps are a dominant macrophyte group and primary producer in Arctic nearshore waters that provide significant services to the coastal ecosystem. The quantification of these services in the Arctic is constrained, however, by limited estimates of kelp depth extent, which creates uncertainties in the area covered by kelp. Here, we test the environmental drivers of the depth extent of Arctic kelp. We used Southampton Island (SI), Nunavut, Canada, as an example region after an initial survey found deep Arctic kelp (at depths to at least 50 m) with relatively low grazing pressure within diverse hydrographic conditions. We found abundant rocky substrata, but no influence of substratum type on kelp cover. The kelp cover increased with depth until 20 m and then decreased (the median maximum depth for all stations was 37 m). The best predictor of kelp depth extent was the number of annual open (ice-free) water days with light (r2 = 44–52%); combining depth extent data from SI with published data from Greenland strengthened this relationship (r2 = 58–71%). Using these relationships we estimated the maximum kelp-covered area around SI to be 27,000–28,000 km2, yielding potential primary production between 0.6 and 1.9 Tg Cyr−1. Water transparency was a key determinant of the underwater light environment and was essential for explaining cross-regional differences in kelp depth extent in SI and Greenland. Around SI the minimum underwater light required by kelp was 49 mol photons m−2 yr−1, or 1.4% of annual integrated incident irradiance. Future consideration of seasonal variation in water transparency can improve these underwater light estimations, while future research seeking to understand the kelp depth extent relationship with nutrients and ocean dynamics can further advance estimates of their vertical distribution. Improving our understanding of the drivers of kelp depth extent can reduce uncertainties around the role of kelp in Arctic marine ecosystems.
Uncertainty as Affective State and Critical Engagement Strategy in Museum and Heritage Site Settings
Authors: Wallen Linnea , Docherty-Hughes John R.
Published: March 2023

Some pasts have long been uncertain—among those, prehistoric lives in areas where limited archaeological evidence has been unearthed. The Scottish Crannog Centre holds a collection of Iron Age artifacts that have been excavated from the bottom of Loch Tay, jigsaw pieces that are used to tell the story of the everyday lives of crannog dwellers two and a half thousand years ago. The visitor experience at the museum is built on direct interaction with the museum team as the visitors are guided through the site, presenting ample opportunities for critical questions to be raised and discussed about how the past can be understood in the present and how it can inform the future. Facilitating such conversations—and using Iron Age artifacts as points of connection and as conversational prompts—involves a careful balance between fact, interpretation, and imagination; what we know for certain, what is likely, and what we do not, and cannot, know. This paper focuses on how Scottish Crannog Centre museum practitioners employ uncertainty as a feeling, a process, and an engagement strategy in generating critical reflections and conversations among visitors. Drawing on data generated through twenty-five interviews with museum staff, apprentices, and volunteers, as well as ethnographic observations, we explore how the team manages uncertainty, how it is positioned and functions in interactions with visitors, and how uncertainty facilitates a sense of connection to the distant past. In so doing, we argue that uncertainty can be more clearly conceptualized as an affective state and a critical strategy when exploring how prehistoric and present-day life are connected in museum contexts.
Phenomenology of Character Education from Elementary School Student Literacy in the Covid-19 Era
Authors: Martati Badruli , Haryanti Tining
Published: March 2023

An intelligent nation can be developed through character education by cultivating the main character values. Several schools have implemented it that there has been a change in patterns due to the Covid-19 pandemic. The purpose of this research: the first to find a model of civilizing the main character values through literacy in Muhammadiyah Elementary school/MI. the second, knowing the impact of cultivating the values of the main character through literacy in Muhammadiyah Elementary school/MI students. Phenomenological approach to explore based on the concept point of view of Muhammadiyah Elementary school/MI students in Surabaya as research informants. Using survey methods, field observations, interviews, documentation, and triangulation. Data processing with software of ATLAS.ti. The results showed that the main character values have been applied. It was reflected in the daily behaviour of students in worshiping without being ordered, loving and maintaining the good name of Indonesia. Wearing batik clothes as a form of nationalism, studying well, doing assignments on time independently. Caring for friends by sharing, throwing garbage in its place, Not bullying, not taking the rights of others as anti-corruption behaviour and a form of love for the truth
Clinical effect of sound sleep support sound player “Lullaby reverberation” for sleep quality
Authors: Bando Hiroshi , Yoshioka Akiyo , Bando Masahiro , Nishikiori Yu
Published: March 2023

Clinical effectiveness of sedative music on sleep quality was investigated. Subjects were 14 females aged 40s to 70s, and methods included listening to music during going to sleep using by sound sleep support sound player “Lullaby reverberation (Komoriuta-no-Hibiki)”, which was evaluated by Pittsburgh Sleep Quality Index (PSQI) in 0,4,8 weeks. Thirteen cases showed decreased points of PQSI. Time to sleep and sleep duration were almost the same. The relationship figure for PSQI and time until sleeping showed general tendency of left and horizontal/lower directional arrows. These results suggest positive beneficial effect of music for sleep quality evaluated by PSQI.
Efficiency of amphiphilic compounds in rabbit erythrocytes posthypertonic shock depending on temperature conditions
Authors:   Institute for Problems of Cryobiology and Cryomedicine NAS of Ukraine, 23 Pereyaslavska str., Kharkiv, 61016, Ukraine, Nipot O. E. , Ershova N. A. ,   Institute for Problems of Cryobiology and Cryomedicine NAS of Ukraine, 23 Pereyaslavska str., Kharkiv, 61016, Ukraine, Shpakova N. M. ,   Institute for Problems of Cryobiology and Cryomedicine NAS of Ukraine, 23 Pereyaslavska str., Kharkiv, 61016, Ukraine, Ershov S. S. ,   Institute for Problems of Cryobiology and Cryomedicine NAS of Ukraine, 23 Pereyaslavska str., Kharkiv, 61016, Ukraine, Shapkina O. O. ,   Institute for Problems of Cryobiology and Cryomedicine NAS of Ukraine, 23 Pereyaslavska str., Kharkiv, 61016, Ukraine
Published: March 2023

The influence of temperature conditions on the level of damage of rabbit erythrocytes under posthypertonic shock and the level of their protection by amphiphilic compounds was investigated. We observed the maximum cell damage at 0°C. When the temperature increased to 20°C, the level of hemolysis decreased by 1.8 times. Further increase in temperature up to 37°C did not lead to a decrease in damage. The investigated amphiphilic compounds at 0°C and 10°C effectively protected rabbit erythrocytes from posthypertonic shock. Reduction of hemolytic damage was 2–3 times. At 20°C amphiphilic compounds did not affect the level of cell damage, and at 30°C and 37°C they increased it. The existence of temperature dependence of posthypertonic damage showed the involvement of the phospholipid component of the erythrocyte membrane in the process. Lower temperature is characterized by greater orderliness of lipids, its increase is accompanied by disorder and increased fluidity, and hence elasticity of the membrane. As a result, erythrocyte damage in posthypertonic shock is less at the temperature of 20–37°C. The addition of amphiphilic compounds at 0 and 10°C acts similarly to increasing the temperature, disorganizes the bilayer, increases the elasticity of the membrane and reduces damage during the transfer from hypertonic to isotonic solution. Above 20°C, the introduction of amphiphilic compounds leads not only to disorder, but also to the formation of mixed micelles consisting of phospholipids and amphiphilic molecules. This disrupts the bilayer, gives it instability and leads to increased damage of erythrocytes.
Influence of Lavandula angustifolia on metabolic indicators and morphofunctional state of rat organs with a high-fat diet
Authors:   Dnipro State Agrarian and Economic University, 25 Sergii Efremov str., Dnipro, 49009, Ukraine, Lieshchova M. A. , Oliyar A. V. ,   Dnipro State Agrarian and Economic University, 25 Sergii Efremov str., Dnipro, 49009, Ukraine, Evert V. V. ,   Dnipro State Agrarian and Economic University, 25 Sergii Efremov str., Dnipro, 49009, Ukraine
Published: March 2023

Herbal preparations recommended in the treatment protocols for metabolic disorders are highly effective and less toxic than chemically synthesized ones. Plants of the Lamiaceae family, in particular Lavandula angustifolia, are known and widely used in the treatment and prevention of many diseases in humans and animals. In a 30-day experiment on model animals was studied the effect of dry herb narrow-leaved lavender on the rate of weight gain, metabolic parameters and the morphofunctional state of the heart, lungs, liver and kidneys. For this, two groups of white laboratory rats (n=7) consuming a high-fat diet for 30 days were formed. The experimental group was additionally given 5% of crushed dry lavender herb as part of the diet. We weighted the animals, calculated the average daily weight gain and at the end of the experiment determined the biochemical parameters of the blood, as well as assessed the macroscopic and microscopic changes in the internal organs. It was established that the addition of lavender to a high-fat diet led to increase in the average daily weight gain, and a significant increase in the absolute mass of the heart and liver compared to the control group. Among the biochemical parameters of the blood, the activity of alkaline phosphatase, as well as the level of total cholesterol and low-density lipoprotein cholesterol, increased significantly. A high-fat diet caused the development of granular degeneration in the kidneys, granular-fatty one in the liver, and the supplementation of the diet with lavender did not improve this condition.
Efficacy of “EnzActive mix” feed additive in piglet growing
Authors:   Institute of Animal Biology NAAS, 38 V. Stusa str, Lviv, 79034, Ukraine, Prudius Т. Y. , Vishchur О. І. ,   Institute of Animal Biology NAAS, 38 V. Stusa str, Lviv, 79034, Ukraine
Published: March 2023

The study was conducted in two stages. The first stage of study was carried out on lactating sows with suckling piglets, and then on weaned piglets up to 43 days of age. The second stage was carried out on young pigs from 43 to 165 days of life during fattening stage. For the study, two groups of sows of the 2–3 farrow were formed. The sows of the control group (C) were fed standard feed, and the experimental group (E) received standard feed with the addition of the “EnzActive Mix” feed additive in the amount 0.3 kg/t of feed. The suckling piglets received pre-starter feed from 5 days of age until weaning. The E group received the experimental feed additive in the amount of 500 g/t. Weaned piglets in the growing period continued to consume pre-starter feed. After the 43 day of life, the piglets in E group received the “EnzActive Mix” feed additive in the amount of 0.3 kg/t to the standard feed. It was found that during the experiment, which lasted 33 days, the live weight of sows decreased by 25 kg (C) and by 20 kg (E), which is 2.44% less (P<0.001). In the early age piglets in E group, there was a statistically significant increase in live weight on day 28 (P<0.001) or by 15.28% compared to C group. After fourteen days of growing, the piglets of E group had a significant increase in live weight (P<0.001) or 12.61%, compared to C group. The increase in live weight in E group is confirmed by the piglets average daily gain rise on 7.14% (P<0.001). The second (fattening) stage of the experiment showed that after adding the “EnzActive Mix” feed additive, from 43 to 80 days of life the average weight in the E group was 15.38% (P<0.001) higher than in C group, and also the increase in live weight by 14.55% (P<0.001) was admitted. We found out an increase in average daily weight gain by 17.27% (P<0.001) in the E group, pointing that the cost of feed to obtain 1 kg of weight gain was lower by 14.61% comparing to the C group. In the second fattening period from 81 to 118 days of life, the live weight in E group increased by 15.4% (P<0.001), live weight gain and average daily weight gain increased by 17.94% (P<0.001), compared to C group, whereas the feed costs per 1 kg of weight gain decreased by 15.38% (P˃0.001). In the third period of fattening, which lasted from 119 to 165 days of life, the feed consumption per 1 kg of weight gain in E group was significantly lower by 9.06 (P˃0.001), and an increase in live weight and average daily weight gain by 9.86% (P<0.001) was noted.
Ujęcia literackości na przykładzie żydowskich polskich i czeskich tekstów byłych więźniów KL Auschwitz
Authors: Gardias Magdalena
Published: March 2023

The article compares different approaches to literaryness contained in two texts by authors of Jewish origin – in Czech by Jiří Steiner and in Polish by Dov Lewi, former prisoners of KL Auschwitz. There is a different approach to the memory records of the Czech, Polish and Israeli archives, which will be discussed (among others competitions for camp memories). The work, however, focuses mainly on the description of the authors’ experiences, the way of presenting them, together with the reconstruction of their biographies, which is aimed at broadening the knowledge in the context of individual history. On the basis of a few selected fragments, there will be also an attempt to evaluate from the literary point of view.
On the argument structure realization of result verbs: A syntactic approach
Authors: Ausensi Josep , Bigolin Alessandro
Published: March 2023

Manner/Result Complementarity (Rappaport Hovav & Levin 2010) has been argued to have consequences for argument realization: only manner verbs permit object deletion and non-selected objects. In contrast, result verbs always co-appear with their object, because they are required to express the undergoer of the change that they entail. We discuss new data involving result verbs in constructions where the undergoer of the change encoded by the result verb is not realized as the object of the predicate. We argue these data display result verbs whose root is integrated into the argument structure of the predicate in such a way that it is interpreted as specifying a co-event of the main event denoted by the predicate, whereby the result entailed by the root is not necessarily intended to hold of the direct object. This follows if verb roots do not come with a syntactically relevant specification for manner or result from the lexicon, but acquire it on the basis of their association with the syntactic structure.
A point field driven approach to process metrics based on laser powder bed fusion additive manufacturing models and in situ process monitoring
Authors: Hocker Samuel J. A. , Richter Brodan , Spaeth Peter W. , Kitahara Andrew R. , Zalameda Joseph N. , Glaessgen Edward H.
Published: March 2023

The widespread adoption of additive manufacturing (AM) in different industries has accelerated the need for quality control of these AM parts. Some of the complex and labor-intensive challenges associated with qualification and certification of AM parts are addressed by modeling and monitoring process conditions. Quantifying melt-track process conditions remains a significant computational challenge due to the large-scale differential between melt pool and part volumes. This work explores a novel point field (PF) driven AM model-based process metric (AM-PM) approach for calculating melt track resolved process conditions with maximal computational speed. A cylindrical Ti-6Al-4V test article with 16 equiangular zones having varied process parameters was built. The melt-track resolved AM-PMs were calculated and mapped to porosity existence for the 5.8-million-point PF of the test article. AM-PMs were calculated in 6.5 min, ~ 665 × faster than a similarly sized finite element calculation. This approach enables efficient prediction, assessment, and adjustment of AM builds.

Graphical abstract
Updated heat capacities of \(^{161-164}\)Dy nuclei
Authors: Le Huong , Tran Dong Xuan , Nguyen Ngoc Anh , Nguyen Minh Hien , Tran Cong Duy , Nguyen Hung
Published: March 2023

This work presents the updated heat capacities of \(^{161-164}\)Dy nuclei in the nuclear temperature region from 0 to 1 MeV. The updated heat capacities are obtained within the canonical ensemble method making use of the most recent and recommended experimental nuclear level density (NLD) data together with those calculated within the back-shifted Fermi gas (BSFG) model with energy-dependent parameters. By comparing the updated heat capacities with the un-updated ones, which are obtained by using the old experimental NLD data and the BSFG with energy-independent parameters, we found that the updated and un-updated heat capacities are almost identical at low temperature, but differ from each others at high temperature. This discrepancy can be interpreted by the damping of nuclear shell structure with increasing the excitation energy. Besides, we observe that the S-shape in the updated heat capacities is much more pronounced in even-even Dy isotopes than in even-odd ones, whereas the un-updated heat capacities do not clearly exhibit this S-shape. Therefore, the updated heat capacities should provide a more convincing evidence for the signature of pairing phase transition in nuclear systems.
ALGORYTM STEROWANIA USTAWIAJĄCY SATELITĘ W KIERUNKU SŁOŃCA
Authors: Felisiak Piotr Andrzej
Published: March 2023

W praca rozważany jest układ regulacji, którego działanie powoduje ustawienie modułów fotowoltaicznych satelity w kierunku Słońca. Przedstawiony regulator jest proporcjonalno- -różniczkujący. Założono, że satelita dysponuje magnetometrami oraz czujnikami natężenia światła i jest wprawiany w ruch obrotowy za pomocą cewek elektromagnetycznych, a zatem najłatwiej dostępnego zestawu czujników i elementów wykonawczych. Regulator zaimplementowano jako część kompleksowego oprogramowania, dzięki któremu można symulować ruch kątowy i orbitalny satelity, jak również pole geomagnetycznego oraz kierunek padania promieni słonecznych. Oprogramowanie to pozwoliło na weryfikację stabilności układu regulacji poprzez symulację, której wyniki przedstawiono w pracy.
ANALIZA CECH HYDRO-AERODYNAMICZNYCH BEZZAŁOGOWEGO POJAZDU NAWODNO-POWIETRZNEGO Z WYKORZYSTANIEM EFEKTU PRZYPOWIERZCHNIOWEGO
Authors: Gerigk Mirosław K.
Published: March 2023

W artykule przedstawiono problematykę badań dotyczących opracowania demonstratora technologii bezzałogowego pojazdu nawodno-powietrznego z wykorzystaniem efektu przypowierzchniowego. Opisano podstawowe problemy badawcze związane z analizą cech hydro-aerodynamicznych pojazdu. Opisano przedmiot badań, bezzałogowy pojazd nawodnopowietrzny typu USV-UAV-WIG. Opisano metodę badań. Przeprowadzono wstępną analizę osiągów i zachowania się pojazdu USV-UAV-WIG w warunkach zbliżonych do rzeczywistych z wykorzystaniemmetody numerycznej mechaniki płynów CFD. Podano wyniki badań. W końcowej części artykułu podano kierunki dalszych badań i wnioski końcowe z dotychczasowych badań.