bluuebunny/crossref_metadata_2025 huggingface dataset:
Phenomenographic Thinking and Research: A Theoretical and Methodological Perspective
Authors: Soysal Yilmaz , Saruhan Vildan
Published: May 2023

In this study, what and how phenomenography as a thinking and research approach is synthesized with a theory-based and practice-oriented approach. In phenomenographic studies conducted in the national context, following steps unsuitable for the epistemology and practices of the approach lead to a false perception of the approach in the external reader, and inconsistent information stacks may occur. This study aims to provide a more accurate understanding of phenomenographic thinking and to use it more appropriately as a research method. Thus, the basic principles, concepts, jargon, and reasoning styles about how phenomenographic research can be carried out are presented in depth. Furthermore, this study aims to make the phenomenography approach more visible and applicable to the syntheses it offers. Initially, the philosophy, theoretical foundations, and basic concepts of the phenomenographic approach were discussed in this context. Then, syntheses were shared about choosing the case to be researched, determining the participant group, structuring the data collection tool, performing the data collection process, determining the researcher’s position, managing and analyzing the data, and ensuring the validity and reliability conditions. In addition, case studies from leading researchers in the field of phenomenography were examined for exemplification. Finally, suggestions were made to researchers who will carry out studies based on the phenomenographic perspective.
Comparative Analysis of Canada (Ontario) and Turkey Social Studies Curriculum
Authors: Taskın Ali Mert , Bozkurt Fisun
Published: May 2023

In this study, the Canadian Ontario Province and Turkey’s 2018 social studies course curricula were compared in terms of target, content, educational status, and evaluation dimensions. In addition, the study addressed the types of citizens that the two curricula intended to create. A case study method, one of the qualitative research methods, was used in the study. The data obtained in the study were analysed with the descriptive analysis approach within the framework of the determined sub-objectives. In Ontario, as in Turkey, social studies courses cover primary and secondary education levels. The Ontario social studies curriculum aims to enable students to become responsible, active citizens by exploring their identities in the context of the diverse (local, national, and global) communities to which they belong. In the Ontario social studies curriculum, it is evident that a national identity that reflects cultural diversity and equality is trying to be built. On the other hand, the Turkish social studies curriculum aims to raise students as good and responsible citizens who adopt national and spiritual values, emphasising a national sense of belonging. The study found that a personally responsible citizenship vision was adopted in Turkey and a participatory and justice-oriented citizenship vision was adopted in Ontario.
Potential of B-Cell Epitopes Protein Ag85 Complex Mycobacterium Tuberculosis as Serodiagnostic Antigen of Tuberculosis by in Silico Study
Authors: Mufida Diana Chusna , Aziz Ayu Munawaroh , Misturiansyah Nurrul Izza
Published: May 2023

Background: The high case of tuberculosis which isn't followed by good detection becomes an urgency for the diagnostic developments. One of them with immunodiagnostic principle uses B-cell Ag85 complex epitope. The design of the diagnostic epitope was performed by mapping the B cell epitope used in silico studies.Objective: The purpose of this research is to analyze antigenicity, physicochemical which affect immunogenicity, and homology of B-cell Ag85 complex epitope with the strain which circulates in Indonesia.  Methods: The samples used were taken from the NCBI protein bank with access numbers P9WQP3 for Ag85A, P9WQP1 for Ag85B, and P9WQN9 for Ag85C. The sequences were analyzed using IEDB (Bepipred) software as the epitope prediction, VaxiJen as antigenicity prediction, ProtParam as physicochemical properties prediction, and BLASTP NCBI as sequence alignment.Results: Twenty seven epitopes were antigenic with 0.4297 to 2.6007 scores and the molecular weight was from 619.59 Da to 3145.36 Da. This research also obtained eleven stable and hydrophilic epitopes. The alignment of 11 candidate epitopes with the strain which circulates in Indonesia, had a similarity percentage of 85.71%-100% and 3 epitopes had a more significant score.Conclusion: Three epitopes of Ag85 complex; Ag85A (212-235), Ag85B (209-237), and Ag85C (283-310), were universal antigens and can be developed into diagnostic antigens in Indonesia.
Effect of Probiotic Supplementation on FSH, LH Levels and Folliculogenesis
Authors: Rahman Nur , Hidayat Syarief Thaufik , Adi Pramono Besari , Soerjo Hadijono Raden , Oerip Poerwoko Agoes , Anityo Mochtar Arufiadi
Published: May 2023

Background: Polycystic ovary syndrome (PCOS) is an endocrine disorder that often occurs in women of reproductive age. The main therapy currently used to treat PCOS patients is insulin sensitizer. In PCOS, there is an imbalance in the intestinal flora which causes activation of the immune system and an inflammatory response that leads to insulin resistance. The effect of probiotic supplementation on insulin resistance can have an impact on changes in reproductive hormone levels in PCOS women. Objective: Analyze the effect of probiotic supplementation on levels of FSH, LH, and folliculogenesis in a study of PCOS Wistar rats. Methods: Experimental research with a post-test only controlled group design. The research sample was 35 Wistar rats which were divided into 5 groups, (K-) were healthy rats, (K+) were PCOS rats without treatment, (P1) were PCOS rats received Metformin, (P2) were PCOS rats received Probiotics, and (P3) were PCOS rats that received Metformin + Probiotics. The intervention was carried out for 14 days. The dependent variables were levels of FSH, LH and folliculogenesis. Research data were analyzed using one-way ANOVA test, Fisher Exact test. Differences between groups and controls were tested with Dunnett's post hoc test. Significant p<0.05Results: Metformin + probiotic supplementation resulted in increased FSH levels, decreased LH levels and increased folliculogenesis when compared to the PCOS rats without treatment (K+).Conclusion: Metformin + probiotic supplementation causes levels of FSH, LH and folliculogenesis activity in PCOS rats to resemble healthy rats.
Understanding Platelet-Rich Plasma as Potential Therapy To Improve Cardiac Function After Myocardial Infarction: Based On Evidence
Authors: Chiuman Linda , Purba Dearni Anggita Krismayani , Samin Hendy Million
Published: May 2023

Myocardial infarction is the leading cause of death in the world’s population. The sudden and progressive loss of cardiomyocyte contractile cells due to infarction is disproportionate to the number of new cells formation. This pathological condition will ultimately reduce the function of the heart muscles. Platelet-rich plasma (PRP) in the last decade has been attracting attention regarding its role in cell regeneration. The content of cytokines and growth factors contained in PRP such as Platelet-Derived Growth Factor (PDGF), Transforming Growth Factor Beta 1 (TGF-Β1), Epidermal Growth Factor (EGF), Vascular Endothelial Growth Factor (VEGF), Basic Fibroblast Growth Factor (bFGF) and others are known to be involved in the migration, proliferation, and differentiation of various cell types and to induce post-ischemic angiogenesis. This review aims to analyze and investigate the benefits of PRP therapy in myocardial infarction. Recent literatures regarding the use of PRP in myocardial infarction was collected by searching PubMed and Google Scholar databases with the keywords of “Platelet-rich plasma”, “Myocardial Infarction”, “Reperfusion”, and “Angiogenesis”. The researches used was published between January 2011 and December 2022. Based on the results, Platelet-rich Plasma (PRP) is considered capable of accelerating angiogenesis, mitogenesis, protect cells from free radicals, reduce infarct area and scar tissue in myocardial infarction. PRP can also improve cardiac function in post myocardial infarction by increasing ejection fraction. In addition, PRP can also reduce treatment costs due to the risk of myocardial infarction complications such as bleeding and infection.
A generalized fractional Pohozaev identity and applications
Authors: Djitte Sidy Moctar , Moustapha Mouhamed , Weth Tobias
Published: May 2023

We prove a fractional Pohozaev-type identity in a generalized framework and discuss its applications. Specifically, we shall consider applications to the nonexistence of solutions in the case of supercritical semilinear Dirichlet problems and regarding a Hadamard formula for the derivative of Dirichlet eigenvalues of the fractional Laplacian with respect to domain deformations. We also derive the simplicity of radial eigenvalues in the case of radial bounded domains and apply the Hadamard formula to this case.
A novel Beta matrix function via Wiman matrix function and their applications
Authors: Khan Nabiullah , Husain Saddam
Published: May 2023

Many authors defined and extended the beta function in various forms because the beta function has wide uses in different fields of science and applied science. In this article, we define a new more generalized form of the extended beta matrix function via the Wiman matrix function and describe their significant properties and special cases. Furthermore, we define an extension of the Gauss hypergeometric and confluent hypergeometric matrix functions by adopting a novel type of beta matrix function. We also derive their Laplace transform, derivative formula and transformation formulae.
A Cost-Efficient Space-Time Adaptive Algorithm for Coupled Flow and Transport
Authors: Bruchhäuser Marius Paul , Bause Markus
Published: May 2023

In this work, a cost-efficient space-time adaptive algorithm based on the Dual Weighted Residual (DWR) method is developed and studied for a coupled model problem of flow and convection-dominated transport.
Key ingredients are a multirate approach adapted to varying dynamics in time of the subproblems, weighted and non-weighted error indicators for the transport and flow problem, respectively, and the concept of space-time slabs based on tensor product spaces for the data structure.
In numerical examples, the performance of the underlying algorithm is studied for benchmark problems and applications of practical interest.
Moreover, the interaction of stabilization and goal-oriented adaptivity is investigated for strongly convection-dominated transport.
A comprehensive review on synergistic and individual effects of erosion–corrosion in ferrous piping materials
Authors: Sekar Annamalai , Bennet Anand Ronald
Published: May 2023

The degradation of materials due to erosion–corrosion occurs on the components that handle particle-laden corrosive slurry. The combined attack of mechanical erosion and corrosion shows increased material loss than the individual action of erosion and corrosion. The synergy accelerates material removal by eroding the corroded surface layer and corroding the surface due to the elimination of the passivating oxide layer by erosion. The synergism of erosion–corrosion is found to be more complex. Further, the coupled effect of mechanical erosion and electrochemical corrosion and the factors influencing erosion–corrosion still needs to be fully investigated. This review aims to provide a general and detailed summary of the interaction between erosion and corrosion of materials for the applications of pump impellers, pipelines for desalination, and oil and gas transportation. Importance is also given to the factors influencing erosion–corrosion, such as erodent particle properties (hardness, size, and shape), slurry properties (particle concentration, pH value, temperature), and flow characteristics (impingement angle, velocity). The various erosion models and the most used apparatus have also been reviewed.
Common best proximity points for a pair of mappings with certain dominating property
Authors: Charoensawan Phakdi , Dangskul Supreedee , Varnakovida Pariwate
Published: May 2023

This article introduces a type of dominating property, partially inherited from L. Chen’s, and proves an existence and uniqueness theorem concerning common best proximity points. A certain kind of boundary value problem involving the so-called Caputo derivative can be formulated so that our result applies.
Reliability Estimation of Parallel Repairable System under Uncertainty in Lifetime Data
Authors: K. Sruthi , Kumar Mahesh
Published: May 2023

Reliability is a popular concept that has been used in the manufacturing industry. In this paper, we consider a parallel system containing n non-identical and independent components in which each component is repairable except when all components are failed. As a special case, estimating the reliability of the system with identical components is considered. In real life, the data obtained for repair rate and failure rate could be subject to uncertainty. Here, to address this situation, failure and repair rates are considered as fuzzy numbers to estimate the reliability of the system. Fuzzy system reliability is estimated using fuzzy failure and repair rates, which are obtained by using confidence intervals and point estimators of failure rate and repair rate.
Joint distribution of the cokernels of random p-adic matrices
Authors: Lee Jungin
Published: May 2023

In this paper, we study the joint distribution of the cokernels of random p-adic matrices.
Let p be a prime and let

P
1

⁢

(
t
)

,
…
,

P
l

⁢

(
t
)

∈

ℤ
p

⁢

[
t
]

{P_{1}(t),\ldots,P_{l}(t)\in\mathbb{Z}_{p}[t]}

be monic polynomials whose reductions modulo p in

𝔽
p

⁢

[
t
]

{\mathbb{F}_{p}[t]}

are distinct and irreducible.
We determine the limit of the joint distribution of the cokernels

cok
⁡

(

P
1

⁢

(
A
)

)

,
…
,

cok
⁡

(

P
l

⁢

(
A
)

)

{{\operatorname{cok}}(P_{1}(A)),\ldots,{\operatorname{cok}}(P_{l}(A))}

for a random

n
×
n

{n\times n}

matrix A over

ℤ
p

{\mathbb{Z}_{p}}

with respect to the Haar measure as

n
→
∞

{n\rightarrow\infty}

.
By applying the linearization of a random matrix model, we also provide a conjecture which generalizes this result.
Finally, we provide a sufficient condition that the cokernels

cok
⁡

(
A
)

{{\operatorname{cok}}(A)}

and

cok
⁡

(

A
+

B
n

)

{{\operatorname{cok}}(A+B_{n})}

become independent as

n
→
∞

{n\rightarrow\infty}

, where

B
n

{B_{n}}

is a fixed

n
×
n

{n\times n}

matrix over

ℤ
p

{\mathbb{Z}_{p}}

for each n and A is a random

n
×
n

{n\times n}

matrix over

ℤ
p

{\mathbb{Z}_{p}}

.
Topological group actions by group automorphisms and Banach representations
Authors: Megrelishvili Michael
Published: May 2023

We study Banach representability for actions of topological groups on groups by automorphisms (in particular, an action of a group on itself by conjugations). Every such action is Banach representable on some Banach space. The natural question is to examine when we can find representations on low complexity Banach spaces.
In contrast to the standard left action of a locally compact second countable group G on itself, the conjugation action need not be reflexively representable even for

SL
2

⁡

(
ℝ
)

{\operatorname{SL}_{2}(\mathbb{R})}

.
The conjugation action of

SL
n

⁡

(
ℝ
)

{\operatorname{SL}_{n}(\mathbb{R})}

is not Asplund representable for every

n
≥
4

{n\geq 4}

.
The linear action of

GL
n

⁡

(
ℝ
)

{\operatorname{GL}_{n}(\mathbb{R})}

on

ℝ
n

{{\mathbb{R}}^{n}}

, for every

n
≥
2

{n\geq 2}

, is not representable on Asplund Banach spaces. On the other hand, this action is representable on a Rosenthal Banach space (not containing an isomorphic copy of

l
1

{l_{1}}

).
The conjugation action of a locally compact group need not be Rosenthal representable (even for Lie groups).
As a byproduct, we obtain some counterexamples about Banach representations of homogeneous G-actions

G
/
H

{G/H}

.
Antioxidant, antibacterial, and cytotoxicity potential of synthesized silver nanoparticles from the Cassia alata leaf aqueous extract
Authors: Sivasubramanian Kanagasabapathy , Sabarinathan Shanmugam , Muruganandham Moorthy , Velmurugan Palanivel , Arumugam Natarajan , Almansour Abdulrahman I. , Kumar Raju Suresh , Sivakumar Subpiramaniyam
Published: May 2023

The current research focuses on the silver nanoparticles (AgNPs) synthesis from the Cassia alata aqueous leaf extract. Various production parameters like pH (4, 5, 6, 7, 8, 9, and 10), metal ion concentration (1, 2, 3, 4, and 5 mM), and substrate (leaf extract) concentration (0.5, 1, 1.5, 2 and 2.5 mL) were optimized. UV-visible spectroscopy was used to identify the production by scanning the wavelength from 200 to 800 nm. Visual color change from light green to brown was designated as prior confirmation of the AgNP production. Physical characterization of AgNPs was carried out using scanning electron microscopy, Fourier-transform infrared spectroscopy, X-ray energy-dispersive spectroscopy, and X-ray diffraction. Furthermore, the obtained AgNPs show significant antibacterial activity for Staphylococcus aureus, Pseudomonas sp. Klebsiella sp., Proteus sp., and Enterobacter sp. The antioxidant potential was determined by α,α-diphenyl-β-picrylhydrazyl assay and cytotoxicity by (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) tetrazolium reduction assay on human lung cancer cell lines (A549). AgNPs confirmed potent antibacterial activity against skin infections, demonstrating their medicinal significance and are therefore crucial for creating a medicinal formulation with antibacterial properties.
Numerical analysis of a new mound-shaped extensional mixing element designed based on a sine curve in single-screw extrusion
Authors: He Hezhi , Li Weijie , Huang Zonghai , Tian Guidong , Zhu Zhiwen
Published: May 2023

The rapid development of polymer blends and nanocomposites has put forward new requirements for the mixing performance of extruders. In comparison with shear flow field, extensional flow field has been shown to have unique advantages in improving dispersive mixing performance and reducing energy consumption. However, building an extensional flow field in a conventional single-screw extruder remains challenging. In this work, a new mound-shaped extensional mixing element (M-EME) was designed based on the geometric characteristics of a sine curve. To investigate the effect of this M-EME on the mixing properties of a conventional single-screw extruder, a numerical simulation analysis of this M-EME was performed. The results showed that the proportion of the region with a mixing index greater than 0.55 in the M-EME was higher than 43 %, and that the highest mixing index of the M-EME reached around 0.9, confirming the dominance of the extensional flow field in the M-EME. Moreover, it was observed that the changes in amplitude and period of the sine function have no significant effect on the distribution of the mixing index. The findings from this work provide a viable way to generate extensional flow fields in conventional screw extruders.
Optimizing multi-level ReRAM memory for low latency and low energy consumption
Authors: Hosseinzadeh Shima , Klemm Marius , Fischer Georg , Fey Dietmar
Published: May 2023

With decreasing die size and the ability to store multiple bits in a single cell, resistive random access memory (ReRAM) can be used to increase storage density, making it a promising technology for the next generation of memory. However, multi-level write operations suffer from impairments such as large latency, high energy consumption, and reliability issues. In this paper, we study different mechanisms affecting the “multi-level incremental step pulse with verify algorithm” (M-ISPVA) on a 1-transistor-1-resistor (1T1R) model in transient simulation at the component and the circuit level with focus on resistance control and energy consumption during the entire process of state transitions. By dividing the M-ISPVA into a triggering and a controlling period, we discovered the transistor to operate in the ohmic region during the triggering period as a voltage-controlled resistance and in the saturation region during the controlling period as a voltage-controlled current limiter. Controlling the gate voltage in the triggering period can move the triggering point to a desired write voltage and in the controlling period can increase or decrease resistance steps per pulse to attain a desired speed of resistance change. In addition, the major energy portion is consumed for reset operation during triggering and for set operation during the controlling period. To optimize write performance, extra precaution must be taken when defining resistance states with target read-out current and gate voltage with the focus on evenly balanced latencies between all transitions. A direct multi-level write operation shows 67.5 % latency and 62.5 % energy saving compared to indirect ones, but suffers from only unidirectional control, making it non-feasible. In case of a 4 k bit memory, the more reliable M-ISPVA faces almost 37 % higher latency and energy compared to the basic ISPVA.
From Tractatus to Later Writings and Back – New Implications from Wittgenstein’sNachlass
Authors: de Queiroz Ruy J. G. B.
Published: May 2023

As a celebration of theTractatus100th anniversary it might be worth revisiting its relation to the later writings. From the former to the latter, David Pears recalls that “everyone is aware of the holistic character of Wittgenstein’s later philosophy, but it is not so well known that it was already beginning to establish itself in theTractatus” (The False Prison, 1987). From the latter to the former, Stephen Hilmy’s (The Later Wittgenstein, 1987) extensive study of theNachlasshas helped removing classical misconceptions such as Hintikka’s claim that “Wittgenstein in thePhilosophical Investigationsalmost completely gave up the calculus analogy.” Hilmy points out that even in theInvestigationsone finds the use of the calculus/game paradigm to the understanding of language, such as “in operating with the word” (Part I, §559) and “it plays a different part in the calculus”. Hilmy also quotes from a late (1946) unpublished manuscript (MS 130) “this sentence has use in the calculus of language”, which seems to be compatible with “asking whether and how a proposition can be verified is only a particular way of asking ‘How do you mean?’” Central in this back and forth there is an aspect which seems to deserve attention in the discussion of a semantics for the language of mathematics which might be based on (normalisation of) proofs and/or Hintikka/Lorenzen game-dialogue: the explication of consequences. Such a discussion is substantially supported by the use of the open and searchableThe Wittgenstein Archives at the University of Bergen. These findings are framed within the discussion of the meaning of logical constants in the context of natural deduction style rules of inference.
Evaluation of calcium/magnesium ratio in patients with type 2 diabetes mellitus
Authors: Yücel Kamile , Gürbüz Ali Fuat
Published: May 2023

Objectives

This study aimed to evaluate the calcium/magnesium (Ca/Mg) ratio in patients diagnosed with type 2 diabetes mellitus (T2DM).

Methods

This study is a retrospective cross-sectional study. Mg levels were determined by measuring the total serum Mg levels. Magnesium was measured by colorimetric method and HbA1c was measured by turbidimetric inhibition immunoassay method. Subject were divided into two groups (<7 % and ≥7 %) based on HbA1c levels. Also, subjects were divided into four groups (quartiles) based on serum Mg concentrations.

Results

A total of 891 (636F, 255M) patients diagnosed with T2DM were included in the study. The Mg increase in the group with good glycemic control was also remarkable. One of our most important findings is that as the Mg concentration increases, the fasting glucose, HbA1c, and Ca/Mg rate decreased with increasing Mg concentration. In the ROC analysis performed between the poor and good glycemic control groups, we found the AUC was 0.672, 0.650, 0.611, and 0.578 for Ca/Mg ratio, Mg, K, and Ca, respectively.

Conclusions

While the Ca/Mg ratio and Ca levels were significantly higher, Mg levels were significantly lower among poor glycemic control than good glycemic control T2DM. The Ca/mg ratio and Mg are important parameters for T2DM patients, but more comprehensive studies are needed before they can monitor glycemic control.
Characterization of titanium grade 5 alloy compressor blade in a jet engine using advanced materials for optimum thrust production
Authors: Joy Nivin , Prakash Subramaniam , Krishnamoorthy Arunagiri , Gunasekar Pitchaimuthu
Published: May 2023

Machining operations on titanium and its alloys have always been a challenge in the design of compressor blade in the jet engine which undergo profound stress during impact of debris and affects the life span of both static and rotary blades. Titanium grade 5 alloy is used to resist the creep and fatigue due to the thermal expansion and sudden impact including bird strike. However, machining them is difficult. An attempt was made to mitigate the temperature during drilling of Ti-6Al-4V by adopting cryogenic coolants LN2, CO2 and a novel approach of coconut oil under varying cutting speed and feed rates. LN2 provided 17 and 55% reduction in temperature over CO2 and coconut oil condition respectively. Employing the optimum machining procedure for Titanium alloy can reduce the weight of the aircraft by mounting the titanium alloy at the leading edge of the carbon fiber reinforced plastic composite blades.
A non consumption és az anti consumption kifejezések nemzetközi kutatási trendjei
Authors: Maksimovic Ágnes , Törőcsik Mária
Published: May 2023

A TANULMÁNY CÉLJA
A kétezres évek elején a nemzetközi marketingirodalomban a fogyasztás visszaszorítása, a fogyasztásellenesség még kevéssé tárgyalt témakör volt. A szakértők foglalkoztak pl. az önkéntes egyszerűsítők fogyasztói csoportjával (Craig-Lees & Hill 2002; Shaw & Newholm 2002) és a fogyasztói ellenállással (Duke 2002). Zavestoski 2002-ben a nemfogyasztásról közzétett kutatása tárgyalásakor az anti consumption kifejezést használta, ami az előzményekhez képest újító hatású volt (Zavestoski 2002). Egy évvel később az ausztráliai Marketing folyóiratban non consumption kifejezéssel jelent meg kutatás, ami a fenntartható fogyasztást és a nemfogyasztást tárgyalta (Todd & Lawson 2003). Ezek után felmerül, mit értünk egyik vagy másik megnevezés alatt, mi ezeknek a magyar nemfogyasztás szóhasználathoz való viszonya. Miután a két megnevezés használatára (vagy akár azok írásmódjára) vonatkozóan nincs szakmai konszenzus, így a kutatás előmozdíthatja a témával foglalkozók egységes keretének kialakulását.
ALKALMAZOTT MÓDSZERTAN
Jelen tanulmány a 2004-2022 között anti consumption és non-consumption (különféle írásmódokban) megjelent nemzetközi publikációkat vizsgálja a Google Trends keresések és kutatások számának elemzésével.
LEGFONTOSABB EREDMÉNYEK
A non-consumption és az anti-consumption kifejezés a Trends segítségével kimutatatott vonaldiagrammon mintegy váltja egymást, ellentétes mozgást mutatva. Mindkét esetben a fogyasztás kapcsolódik leginkább a kifejezésekhez. Az anti-consumption kifejezésnél a fogyasztásellenesség is feltűnik, mintegy jelezve, hogy az anti-consumption esetében érzelmi többlet is jelentkezhet, míg a non-consumption esetében nincs érzelmi többlet, ez inkább tényként kezelt állapotokhoz kapcsolódik. A hazai nemfogyasztás kifejezés tartalmát, a non-consumption közvetíti leginkább, így fordításokban, keresésekben ezt javasoljuk.
GYAKORLATI EREDMÉNYEK
Kihívás teljesen különválasztani a két kifejezést, hiszen a fogyasztás témakörhöz kapcsolódnak szorosan, így a fogyasztás mind a hat írásmódban vizsgált kifejezésnél megjelenik. Az anti consumption esetén a fogyasztást (100), az alkoholos italt (16) követően a fogyasztásellenesség (16) jelenik meg legyakrabban. A non-consumption esetében pedig a fogyasztás (100) után az elektromos energia fogyasztás (19), az energia (17) kerülnek előtérbe. Régiós bontás szerint, az Egyesült Államokban kiemelten keresnek a kifejezésre, ez a nyelvi sajátoság miatt lehetséges.
Az egyetemi fenntarthatóság hallgatói észlelésének mérése
Authors: Nagy Szabolcs
Published: May 2023

A TANULMÁNY CÉLJA
A modern egyetemek egyre újabb kihívásokkal szembesülnek, beleértve a fenntarthatósági célkitűzéseknek való megfelelést is. Ezért alapvető fontosságú számukra, hogy a fenntarthatósággal kapcsolatos teljesítményüket mérni tudják, és be tudják azonosítani erősségeiket és gyengeségeiket ezen a területen. Jelen tanulmány a szerző által fejlesztett fenntartható egyetem skálát a fontosság-teljesítmény elemzéssel kombinálva tárja fel az egyetemi fenntarthatóság kulcsfontosságú területeit a Miskolci Egyetem vonatkozásában.
ALKALMAZOTT MÓDSZERTAN
A hallgatók által észlelt egyetemi fenntarthatóság mérése érdekében egy 21 változóból álló, saját fejlesztésű mérési konstrukció, a ’fenntartható egyetem skála’ került kialakításra és lekérdezésre a Miskolci Egyetem hallgatói körében egy online kérdőíves vizsgálat során. A mérési skála validálása Cronbach-alfa mutató segítségével történt. A fontosság-teljesítmény elemzés alkalmazásával került sor az erősségek és a kritikus területek beazonosítására.
LEGFONTOSABB EREDMÉNYEK
A fenntartható egyetem skála megbízható konstrukciónak bizonyult az egyetemi fenntarthatóság különböző aspektusainak mérésére, míg a fontosság-teljesítmény elemzés segítségével lehetővé vált a fenntarthatósággal kapcsolatos erősségek és gyengeségek beazonosítása. A hallgatók által észlelt egyetemi fenntarthatóság legfontosabb elemének a szelektív hulladékgyűjtés bizonyult.
GYAKORLATI JAVASLATOK
A tanulmány, mely az egyetemi döntéshozók és a kutatók számára is hasznos lehet, olyan módszertant és skálát mutat be, amelyek hozzájárulhatnak a hagyományos egyetemek fenntartható felsőoktatási intézményekké való átalakításához. A ’fenntartható egyetem skála’ fontosság-teljesítmény elemzéssel való kombinálása lehetővé teszi bármely egyetem menedzsmentje számára az adott intézmény fenntarthatósági erősségeinek és gyengeségeinek a meghatározását, illetve az erősségeken alapulva a hatékonyabb pozícionálást, illetve a hallgatók elégedettségének a növelését a gyengeségek megszüntetésén keresztül
Önvezető járművekhez kapcsolódó fogyasztói preferenciák vizsgálata
Authors: Ujházi Tamás
Published: May 2023

A TANULMÁNY CÉLJA
Az önvezető járművek (AV) bevezetése forradalmasíthatja a mobilitást. Elterjedésük egyik legmeghatározóbb korlátja azonban társadalmi elfogadásuk. Az utóbbi években egyre nő azon szakcikkek száma melyek az AV-k fogyasztói elfogadását vizsgálják valamely technológiaelfogadási modell felhasználásával, kérdőíves megkérdezéssel. Mindinkább előtérbe kerül ugyanakkor ezen kutatási módszertanok azon releváns korlátja, mely szerint a válaszadók nem rendelkeznek személyes tapasztalattal az AV-ben történő utazást illetően. Tanulmányunk célja egy olyan kutatási módszertan fejlesztése és tesztelése, mely ötvözi a technológiaelfogadás és-használat egyesített elméletét (UTAUT) a conjoint elemzéssel. Célunk, hogy megállapíthassuk, melyek azok a legfontosabb termékjellemzők az AV-k tekintetében, amelyek leginkább befolyásolják a fogyasztókat döntéshozás közben.
ALKALMAZOTT MÓDSZERTAN
Új termékek fejlesztése során sikeresen alkalmazható módszertan a conjoint elemzés. Kutatásunk során ezért a korábban már validált UTAUT modell független változóit, mint termékjellemzőket azonosítottuk egy teljes profilú conjoint elemzés létrehozására. Primer adatgyűjtésünk során a conjoint kártyákat összesen 202 fő értékelte két lépésben. Elsőként saját preferenciáik szerint sorbarendezték, másodikként tíz pontos Likert skálán értékelték a kapott kártyákat, melyek a termékjellemzők szintjeinek különböző kombinációit jelenítették meg.
LEGFONTOSABB EREDMÉNYEK
Eredményeinkből kiderül, hogy az UTAUT modell segítségével létrehozott teljes profilú conjoint elemzés sikeresen alkalmazható az önvezető járművekhez kapcsolódó fogyasztói preferenciák vizsgálatára. Fontos ugyanakkor megjegyezni, hogy a Likert skála segítségével történő értékelés során megbízhatóbb eredményeket kaptunk, mint a preferenciasorrend felállítása esetén. Legfontosabb eredményünk, hogy válaszadóink számára a biztonság kiemelkedően a legfontosabb termékjellemző, melyet a funkcionális attribútumok némileg lemaradva, mégis kéz a kézben követnek, legkevésbé fontosak pedig a belső jellemzők.
GYAKORLATI JAVASLATOK
Eredményeinkkel szeretnénk felhívni a fejlesztők és döntéshozók figyelmét első sorban arra, hogy munkájuk során kiemelkedő helyet kapjon az AV-k biztonsága a széleskörű elterjedés érdekében. Irányadó lehet továbbá, hogy eredményeink alapján egy jól működő és kényelmes AV-ért a fogyasztók hajlandóak lennének magasabb árat fizetni.
Köszönetnyilvánítás: Készült a Nemzeti Kutatási, Fejlesztési és Innovációs Hivatal – NKFIH K 137571 azonosító számú K_21 „OTKA" Kutatási témapályázat támogatásával.
Times they are a-changin’: a response to Magli and Belmonte
Authors: Darvill Timothy
Published: May 2023

Debates about archaeological interpretation are always healthy and welcome, and when, as here, arguments are not killed off, they inevitably become stronger. Importantly, the comments by Magli and Belmonte (2023) serve as a reminder that reconciling conflicting theoretical perspectives is never easy when times are changing. Grounded in positivism, their critique draws upon assumptions that become justificatory assertions. For better or worse, archaeological thinking has moved away from the processualism of the late 1960s, 1970s and early 1980s—a key turning point being Hodder's (1984) review of positivism in archaeological interpretation and his call for more contextualised approaches. The authors might usefully have consulted this and other works before setting out onto the choppy waters of post-processual archaeology. Many of their points simply escalate questions posed in my original text (Darvill 2022), and they often fail to distinguish between suggestions, arguments and more solid interpretative statements. Notwithstanding, they neatly arrange their response around three issues that are here addressed seriatim.
The Relationship of Anthropometric and Physical Performance Characteristics on Competitive Success in Amateur, Elite, and Professional Rodeo Athletes
Authors: Oranchuk Dustin J. , Gullett LeeAnne K. , Kicia Michael , Thome Brandon , Game Alex
Published: May 2023

Oranchuk, DJ, Gullett, LK, Kicia, M, Thome, B, and Game, A. The relationship of anthropometric and physical performance characteristics on competitive success in amateur, elite, and professional rodeo athletes. J Strength Cond Res 37(7): 1495–1506, 2023—Reference anthropometric and physical performance qualities can improve understanding of sporting needs and streamline preparation and rehabilitation programs. However, these data and their relationships with competitive success are absent in rodeo athletes. We hypothesized that riding performance would be most correlated with hip adductor, neck, and grip strength, whereas jump, reactive strength index (RSI), and change of direction abilities would best predict bull-fighting performance. Forty-three amateur (n = 9), professional (n = 23), or internationally ranked (n = 11) male rodeo athletes (bareback = 9, bull riders = 16, saddle bronc = 7, bullfighters = 11) (26.8 ± 5.6 years) volunteered for this study. Anthropometrics included body mass, height, and body fat percentage. Performance measures included isometric hip adduction and abduction, neck flexion and extension, handgrip strength, squat and countermovement jump heights, eccentric utilization ratio, reactive strength index, change of direction, bike sprints, and several pneumatic power measures. Bullfighters were taller and heavier than bull riders (effect size [ES] = 0.84–0.87, p = 0.008–0.017). Bull riders were leaner than bullfighters (ES = 0.74, p = 0.012). Fighters had greater RSI than riders (ES = 0.73–1.47, p < 0.001–0.030). Competitive level of rodeo riders (n = 32) correlated with age, rodeo experience (ρ = 0.37–0.43, p = 0.013–0.049), bent-leg abduction (ρ = 0.43, p = 0.014), straight-leg hip adduction and abduction (ρ = 0.49–0.56, p < 0.001–0.005), neck flexion force (ρ = 0.43, p = 0.016), and rotational power (ρ = 0.50, p = 0.004). The competitive level of the fighters correlated with age (ρ = 0.64, p = 0.036) and time trial performance (ρ = −0.76, p = 0.006). This is the first study providing normative and correlational strength and power performance data in a rodeo population. These data highlight the need for more event-specific physical preparation. Riders should focus their physical preparation on hip and neck strength and rotational power. Bullfighters should prioritize stiffness and anaerobic power.
PrEP-Related Interactive Toxicity Beliefs: Associations With Stigma, Substance Use, and PrEP Uptake
Authors: Brousseau Natalie M. , Driver Redd , Simon Kay , Watson Ryan J. , Earnshaw Valerie A. , Chandler Cristian J. , Kalichman Seth , Eaton Lisa A.
Published: May 2023

Despite documented efficacy in reducing HIV transmission, pre-exposure prophylaxis (PrEP) uptake among Black sexual minority men (BSMM) is limited. One understudied factor which may impede PrEP uptake is PrEP-related interactive toxicity beliefs (i.e., believing it is hazardous to use alcohol/drugs while taking PrEP). Data from N = 169 HIV negative BSMM over 4 months showed high rates of agreement with at least one alcohol (78%) or drug (84%) interactive toxicity belief. Univariate analyses showed increased alcohol or drug interactive toxicity beliefs predicted lower PrEP uptake. Multivariable regression suggested those with PrEP-related alcohol or drug interactive toxicity beliefs were more likely to report high PrEP stigma, more negative PrEP beliefs (e.g., concern that taking PrEP disrupts life), and were more likely to use alcohol/drugs (respectively) prior to/during sex. Findings warrant intervention work targeting interactive toxicity beliefs with tailored messaging to mitigate PrEP stigma and correct concerns around substance use and PrEP.
Gallbladder Sarcomatoid Carcinoma Diagnosed after Surgery
Authors: Cho Yoon-Ho , Cha Sang-Woo , Cho Young Deok , Lee Min Young , Chu Chong-Woo , Hong Seong Sook , Jin So-Young
Published: May 2023

Sarcomatoid carcinoma is rarely diagnosed as gallbladder cancer. Its aggressive nature, due to the characteristics of both sarcoma and carcinoma, results in a poor prognosis. We report a case of gallbladder sarcomatoid carcinoma in an 82-year-old male who was referred to our hospital for evaluation of gallbladder cancer observed on abdominopelvic computed tomography. The characteristics of the cancer were not confirmed after several imaging modalities. The surgically resected tumor was positive for both cytokeratin and vimentin as revealed via immunohistochemical staining, and a sarcomatoid carcinoma was finally diagnosed. The role of chemotherapy has not yet been identified. Therefore, radiation therapy is planned to reduce the risk of recurrence.
Making paper from materials that are essential to our lives/making paper without trees is the new “Must”
Authors: Teacă Carmen-Alice
Published: May 2023

Paper, which is in fact a very complex cellulose-based product derived from different lignocellulosic resources, is usually regarded as a simple omnipresent commodity in our lives. Wood fibers derived from trees are the most employed sources for papermaking purposes. From an environmental protection perspective, and for their essential role in our life (they give us the life itself through their foliar system supporting the photosynthesis process), trees should not be extensively cut down and they should be used less and less for papermaking. Thus, employment of non-woody alternative sources for papermaking could be exploited more as an attractive and feasible option.
Renewable resource-derived elastomer vitrimer and its sustainable manufacturing and application in extreme environmental conditions
Authors: Zhang Jinlong , Li Weiguo , Wu Qinglin
Published: May 2023

The development of biomass (e.g., lignin, cellulose or vegetable oil)-based reversibly dynamic covalent cross-linked elastomer vitrimer materials is a novel approach to address issues related to the recycling of waste cross-linked elastomer material. The primary questions discussed are about how to design chemically recycled biomass-derived cross-linked elastomer vitrimer materials, what are the potential challenges in sustainable manufacturing of cross-linked renewable resources derived elastomer vitrimer materials, and what are their potential advanced applications under extreme environmental conditions, such as extreme low or high temperature and irradiated environments.
Catholic churches or Orthodox cathedrals? Basilicas of Venice and Padua in the notes of Vasily Grigorovich-Barsky
Authors: Buzykina Yu. N.
Published: May 2023

The author analyses the attribution error made by Vasily Grigorovich-Barsky in his pilgrimage notes. It lies in the fact that he mistook three Italian basilicas, namely San Marco in Venice, St Anthony and Santa Giustina in Padua, for Orthodox cathedrals turned into Catholic churches. The aim of the study is to identify the reasons behind the his conclusion. To answer the question, the author resorts to the qualitative method of analysing the source text. She concludes that the error results from the interpretation of the dome completions and the style of painting of these churches as corresponding to the Orthodox tradition. In addition, the interpretation of San Marco may have been influenced by the oral testimony of the Venetian Greeks, which Barsky may have falsely interpreted.
Mirjam Kudella, Der antimanichäische Augustin: Zeuge und Polemiker, Brill-Schöningh 2022 (Augustinus. Werk und Wirkung. Bd. 14). Review
Authors: Buzykina I. N.
Published: May 2023

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An Example of a Modern Secular Spiritual and Moral Guideline for the Physician: Shaping the Biography of a New Type of "Saint"
Authors: Rodionova Yu. V.
Published: May 2023

In the modern educational process, additional lectures are increasingly being introduced into the mandatory postgraduate education programme, aimed at developing the personal qualities of a physician, increasing the motivation of students towards the profession, and increasing the attractiveness of the image of a medical professional and a scientist. To that end, certain moral and ethical reference points are selected from the biographies of physicians of the "past", which are elevated to an ideal and repeated in every biographical article without proper professional evaluation. The mythologisation of the image of the physician in the professional community and in the mass consciousness is thus the subject of a separate study. In this article, the author examines the biography of Friedrich Joseph Haass, a nineteenth-century Moscow physician beatified by the Roman Catholic Church, in the context of the emergence of the biography of a new type of "saint" and examples of new secular spiritual and moral reference points, different from the traditionally established Church attributes of holiness, and in the absence of a close connection to the religious institution of the Church.
THERMOPHYSICAL PROPERTIES OF CARBON-FIBER COMPOSITE MATERIALS BASED ON WOVEN SEMIPREGS USING EPOXY BINDER AS A BASE
Authors: Popov Igor A. , Khamidullin O. L. , Amirova L. M. , Popov I. A. , Chorny Andrei D. , Zhukova Yu. V.
Published: May 2023

We report a study of thermal conductivity and specific heat of a new carbon fiber polymer composite material (PCM) made of 25 semipreg layers based on the carbon fiber thermoplastic UMT40-3K-EP and the new-generation melt epoxy binder composed of modified epoxy resin, amine aromatic hardener, and thermoplastic. The values of thermal conductivity and specific heat, as well as their temperature dependence, are within the temperature range from -20°С to 80°С. The values of thermal conductivity vary from 0.4 to 0.515 W/(m · °C) and those of specific heat: from 878 to 959 J/(kg · °C). The obtained results can find use in calculating and designing systems and devices using a PCM as a construction material, as well as in calculating parameters of the technological process of PCM production.
STUDY ON THE EVOLUTION LAW OF PORE STRUCTURE AND MECHANICAL PROPERTIES OF MUDSTONE UNDER THE EFFECT OF WATER-ROCK CHEMISTRY
Authors: Zhang Na , Wang Huayao , Wang Shuibing , Wang Shuaidong , Guo Yunpeng , Xun Xingjian
Published: May 2023

The influence of different pH and concentration of water chemical solutions on the mechanical properties of mudstone is studied. The triaxial compression test and nuclear magnetic resonance (NMR) test of mudstone are carried out, and the root cause of the deterioration of mechanical properties of mudstone during the hydration damage process is explored, combining macroscopic and microscopic. The results show that hydrolysis and chemical ion exchange are responsible for the deterioration of mudstone shear strength parameters. The essence of mudstone hydration damage is that water chemistry changes the original pore space structure and pore size distribution inside. Part of the minerals dissolve and fall off under the influence of the water chemical solution, which expands the pore size and increases the porosity. The connection force between mineral particles decreases, macroscopically, the mudstone undergoes a softening evolution from brittleness to ductility, and the shear strength parameters deteriorate. The results show that mudstone is more sensitive to acidic solution than neutral and alkaline solution. The higher the pH of the alkaline solution or the higher the concentration of the neutral solution, the more significant the deterioration of mudstone. Under the influence of hydrochemical solution, the fractal dimension of mudstone gradually tends to 2 from 3, which indicates that the process of hydration damage reduces the complexity of mudstone pore structure. On this basis, the damage variable Dn defined based on the change of porosity before and after hydration damage of mudstone, to a certain extent, quantitatively reflects the law of mudstone shear strength parameters accompanied by microscopic pore structure evolution. The shear strength parameters of mudstone decrease significantly with the increase of damage variable Dn. The test analyzes the root cause of the deterioration of the macroscopic mechanical properties of mudstone during the hydration damage process from a microscopic point of view, and the conclusions obtained provide a good reference for the quantitative study of the effect of water chemistry on the mechanical properties of mudstone.
Full-scale model tests on ballasted tracks with/without geogrid stabilisation under high-speed train loads
Authors: Luo Zheng , Zhao Chuang , Cai Wenqing , Gu Qiusheng , Lin Weian , Bian Xuecheng , Chen Yunmin
Published: May 2023

High-speed trains running on ballasted tracks intensify the vibration of ballast layers to a greater extent than conventional passenger trains, with detrimental effects to train operations. The stabilisation effect of the geogrid in real railways under high-speed train moving loads remains unclear. Herein, full-scale model tests on a ballasted trackbed with and without geogrid were conducted, and a novel sequential loading system was adopted to apply the train moving loads. The highest train speeds were 300 km/h for the ballasted track without geogrid, and 360 km/h for the ballasted track with geogrid. To monitor the geogrid tension strain, distributed fibre Bragg grating sensors were mounted on the geogrid ribs. It was found that the maximum geogrid tension strain between neighbouring sleepers was six times larger than that beneath the sleepers. The geogrid influence zone in the ballast layer was identified as being at least 15 cm above the geogrid. The dynamic stress on the subballast surface was decreased by about 49% in the stabilised trackbed. The testing results also showed that geogrid stabilisation could reduce ballast breakage from 14·9% to 2·5% and reduce the permanent settlement of ballast layer by 40%. The experimental results presented in the paper provide a benchmark for geogrid-stabilisation modelling and will be referenced for the optimal design of ballasted tracks.