bluuebunny/crossref_metadata_2025 huggingface dataset:
Development and validation of a risk score for predicting clinical success after endobiliary stenting for malignant biliary obstruction
Authors: Pausawasdi Nonthalee , Termsinsuk Panotpol , Charatcharoenwitthaya Phunchai , Limsrivilai Julajak , Kaosombatwattana Uayporn
Published: August 2022

Background

Endoscopic drainage is the primary treatment for unresectable malignant biliary obstruction (MBO). This study developed and validated a pre-endoscopic predictive score for clinical success after stent placement.

Methods

Patients with unresectable MBO undergoing ERCP-guided endobiliary stent placement between 2007 and 2017 were randomly divided into derivation (n = 383) and validation (n = 128) cohorts. To develop the risk score, clinical parameters were built by logistic regression to predict (1) ≥ 50% total bilirubin (TB) resolution within 2 weeks and (2) bilirubin normalization (TB level <1.2 mg/dL) within 6 weeks following stenting. The scoring scheme was applied to the validation cohort to test its performance.

Results

A ≥ 50% TB resolution within 2 weeks was shown in 70.5% of cases. The risk scoring scheme had areas under the receiver operating characteristic curve (AUROC) of 0.70 (95% CI, 0.64–0.76) and 0.67 (95% CI, 0.57–0.77) in the derivation and validation cohorts, respectively. Thirty-one percent had TB normalization within 6 weeks after stenting. Significant predictors for TB normalization were extrahepatic biliary obstruction (odds ratio [OR] = 2.35), pre-endoscopic TB level (OR = 0.88), and stent type (OR = 0.42). The AUROC of a risk score for predicting TB normalization within 6 weeks was 0.78 (95% CI, 0.72–0.83) and 0.76 (95% CI, 0.67–0.86) in the derivation and validation cohorts, respectively. A score > 1.30 yielded a specificity of 98% and a positive predictive value of 84% for predicting TB normalization. A score of < -4.18 provided a sensitivity of 80%–90% and a negative predictive value of 90%–93% for predicting the absence of TB normalization.

Conclusions

The pre-endoscopic scoring system comprising biliary obstruction level, liver biochemistry, and type of stent provides prediction indices for TB normalization within 6 weeks after stenting. This scheme may help endoscopists identify patients with unresectable MBO suited for palliative stenting.
Students and examiners perception on virtual medical graduation exam during the COVID-19 quarantine period: A cross-sectional study
Authors: Alkhateeb Nazdar Ezzaddin , Ahmed Baderkhan Saeed , Al-Tawil Namir Ghanim , Al-Dabbagh Ali A.
Published: August 2022

Background

With the emergence of the COVID-19 pandemic and lockdown approach that was adopted all over the world, conducting assessments while maintaining integrity became a big challenge. This article aims at sharing the experience of conducting an online assessment with the academic community and to assess its effectiveness from both examiners’ and students’ perspectives.

Methods

An online assessment was carried out for the final year medical students of Hawler Medical University/Iraq during the lockdown period of the COVID-19 pandemic, June 2020. Then, an online questionnaire was sent to a sample of 61 examiners and 108 students who have been involved in evaluating the mentioned assessment process. Mann-Whitney and Kruskal-Wallis tests were used to compare the mean ranks of the overall satisfaction scores between categories of the students and examiners. Categorical data were summarized and presented as frequencies and percentages.

Results

The response rates among examiners and students were 69.4% and 88.5% respectively. The majority of the examiners were generally satisfied with the online examination process compared to only around a third of the students. However, both examiners and students agreed that online examination was not suitable for assessing the physical examination skills.

Conclusion

The online assessment can be considered a good alternative and acceptable method for medical students’ assessment in unpredicted emergencies, yet it was not applicable in testing physical examination skills.
Mitochondrially targeted proximity biotinylation and proteomic analysis in Plasmodium falciparum
Authors: Lamb Ian M. , Rios Kelly T. , Shukla Anurag , Ahiya Avantika I. , Morrisey Joanne , Mell Joshua C. , Lindner Scott E. , Mather Michael W. , Vaidya Akhil B.
Published: August 2022

Despite ongoing efforts to control malaria infection, progress in lowering the number of deaths and infections appears to have stalled. The continued high incidence of malaria infection and mortality is in part due to emergence of parasites resistant to frontline antimalarials. This highlights the need for continued identification of novel protein drug targets. Mitochondrial functions inPlasmodium falciparum, the deadliest species of human malaria parasite, are targets of validated antimalarials including atovaquone and proguanil (Malarone). Thus, there has been great interest in identifying other essential mitochondrial proteins as candidates for novel drug targets. Garnering an increased understanding of the proteomic landscape inside theP.falciparummitochondrion will also allow us to learn about the basic biology housed within this unique organelle. We employed a proximity biotinylation technique and mass spectrometry to identify novelP.falciparumproteins putatively targeted to the mitochondrion. We fused the leader sequence of a mitochondrially targeted chaperone, Hsp60, to the promiscuous biotin ligase TurboID. Through these experiments, we generated a list of 122 “putative mitochondrial” proteins. To verify whether these proteins were indeed mitochondrial, we chose five candidate proteins of interest for localization studies using ectopic expression and tagging of each full-length protein. This allowed us to localize four candidate proteins of unknown function to the mitochondrion, three of which have previously been assessed to be essential. We suggest that phenotypic characterization of these and other proteins from this list of 122 could be fruitful in understanding the basic mitochondrial biology of these parasites and aid antimalarial drug discovery efforts.
Study on safety and stability of high altitude dump under severe drying-wetting alternation
Authors: Dong Jianjun , Yang Di , Mei Yuan , Gao Ke
Published: August 2022

This study aimed to reveal the impact of the severe drying-wetting process on the safety and stability of high-altitude dumps. Numerical calculations were conducted for the open mining dump of limestone mines for cement in high-altitude mining areas. The distribution law equation of the matric suction and the shear strength equation were imported for unsaturated soil based on the unsaturated-saturated seepage theory. Therefore, the evolution characteristics of the unsaturated-saturated seepage field and the stability of the dump were studied under severe drying-wetting. The results indicated the following rules: As the intensity of the wetting-drying alternation increased, the surface soil on the dump changed from an unsaturated to a saturated state, the matric suction continued to decrease until it reached zero, the shear strength decreased, and the unsaturated area shrank. The dump slipped under the influence of the drying-wetting alternation, the sliding area was the dump itself, and developed to the deep layer as the intensity of the drying-wetting alternation strengthened. The cumulative settlement value of the dump increased with time and eventually stabilized, and the maximum accumulative settlement value calculated by simulation was in good agreement with the actual monitoring value. The safety factor decreased as the intensity of the drying-wetting alternation increased.
Framework for feature selection of predicting the diagnosis and prognosis of necrotizing enterocolitis
Authors: Song Jianfei , Li Zhenyu , Yao Guijin , Wei Songping , Li Ling , Wu Hui
Published: August 2022

Neonatal necrotizing enterocolitis (NEC) occurs worldwide and is a major source of neonatal morbidity and mortality. Researchers have developed many methods for predicting NEC diagnosis and prognosis. However, most people use statistical methods to select features, which may ignore the correlation between features. In addition, because they consider a small dimension of characteristics, they neglect some laboratory parameters such as white blood cell count, lymphocyte percentage, and mean platelet volume, which could be potentially influential factors affecting the diagnosis and prognosis of NEC. To address these issues, we include more perinatal, clinical, and laboratory information, including anemia—red blood cell transfusion and feeding strategies, and propose a ridge regression and Q-learning strategy based bee swarm optimization (RQBSO) metaheuristic algorithm for predicting NEC diagnosis and prognosis. Finally, a linear support vector machine (linear SVM), which specializes in classifying high-dimensional features, is used as a classifier. In the NEC diagnostic prediction experiment, the area under the receiver operating characteristic curve (AUROC) of dataset 1 (feeding intolerance + NEC) reaches 94.23%. In the NEC prognostic prediction experiment, the AUROC of dataset 2 (medical NEC + surgical NEC) reaches 91.88%. Additionally, the classification accuracy of the RQBSO algorithm on the NEC dataset is higher than the other feature selection algorithms. Thus, the proposed approach has the potential to identify predictors that contribute to the diagnosis of NEC and stratification of disease severity in a clinical setting.
Delegate contract signing mechanism based on smart contract
Authors: Xiong Wei , Hu Yangcheng
Published: August 2022

In this paper, a delegate contract signing solution is proposed to eliminate the potential risk of contract fraud caused by information and interest asymmetry. By utilizing the functional properties of the Ethereum blockchain and smart contracts, a delegate contract signing mechanism is established. By running the mechanism, the delegate contract signing information is received and processed, and the information is broadcast to the blockchain network nodes. By designing the algorithms of "requesting contract signing", "successful contract signing" and "contract fraud dispute resolution", the delegate contract signing is realized. By proposing algorithms and their calling processes, the smart contracts are completed. Finally, the smart contracts based on the solution are tested and verified. The source code of the smart contracts has been published on GitHub.
Teacher Education for a Rural-Ready Teaching Force: Swings, Roundabouts, and Slippery Slides?
Authors:   University of Canberra, Roberts Philip , Downes Natalie ,   University of Canberra, Reid Jo-Anne ,   Charles Sturt University
Published: August 2022

The preparation of teachers for rural schools has been a significant focus of research for many decades. In this paper we update previous reports of the extent of Initial Teacher Education courses that prepare teachers for rural schools in Australia. We found that despite significant and continued calls for rural teacher education, there are still very few rural-teaching units offered in teacher education courses, and there are no courses at all that seek this as an explicit outcome. As the Australian Professional Standards for Teaching claim the importance of teachers understanding students and their contexts, we argue that effective teacher education must not only focus on understanding rurality, and developing awareness of the affordances of place, but must also address the pedagogical requirements for present day rural teaching. We argue that the lack of teacher preparation for locational, geographic forms of social difference works to produce and sustain educational disadvantage when these intersect with economic and cultural difference. On this basis we call for government to address this major failing in the provision of education for Australian children through policy change to teaching standards.
Mechanism of Luminescence Enhancement in Eu3+ Activated Double Perovskite
Phosphors Bi2-xEuxWO6 (x = 0-0.24) Prepared by Sol-Gel Method
Authors: Rao K. Koteswara , Naidu B. Nagamani
Published: August 2022

A double perovskite structured series Bi2–xEuxWO6 (x = 0.03-0.24) was prepared by using simple
citrate sol-gel method at 700 ºC for 5 h of sintering. The double perovskite structure and its lattice
parameters were analyzed by the XRD technique and found to be pure orthorhombic phase. The
concentrated sample of x = 0.12 exhibits more intensity than all other concentration in their emission
spectra. Particle size, thickness of the particle, distance between particles and its surface morphology
were identified by scanning electron microscopy. The size and distance between particles lies in between
the range of 1-50 nm and 20-50 nm, respectively. In addition to this the absorption of light capacity for
every sample was investigated through diffuse reflectance spectra method. All the samples of double
perovskite structures exhibit a sharp cut-off of absorption light in the UV and visible regions of diffuse
reflectance spectra. Predominantly, sample x = 0.12 shows very good charge transfer band in their
excitation spectra that leads to more absorption of light correspondingly emits high intensity in emission
spectra. All the samples of series emit main peaks in the range of 550-700 nm in their emission
spectra. Out of all four main peaks, 614 nm peak represents the red phosphor with 5D0−7F2 transition
in the emission spectra. The prepared double perovskite structure compound CRI co-ordinates (0.6254,
0. 3739) are almost close to commercially available red phosphor i.e. Y2O2S (0.67, 0.33) as per NTSC.
Hence, the prepared red phosphors can be used in order to display devices, luminescent materials and
WLEDs.
Comparative Study of Bioethanol Production from Waste Banana Fruits and Grape Fruits
Authors: De Silva S.J. , Arachchige Udara S.P.R. , Nilmini A.H.L.R.
Published: August 2022

Petroleum consumption in the transportation sector causes severe damage to the environment. Bioethanol
is used as a biofuel or fuel additive because of its properties that give clean burning, reducing air
pollution and avoiding global warming. Still, Sri Lanka depends on petroleum fuel. As a result, Sri
Lanka generates 270000 tons of fruit waste per year, including bananas, and it is time to investigate
alternatives to fossil fuel. It would diminish environmental pollution and reduce the dependence on
imported fossil fuels. In present study, the waste of bananas and grapes is used to produce bioethanol
using S. cerevisiae (Baker’s yeast). Temperatures of 30 ºC and pH 5.0 were maintained in the
fermentation medium. This study shows that waste grapes have a higher ethanol concentration, 6.08%
greater than bananas at 5.11%. The grape and banana ethanol yields are 46.77 g/L and 39.46 g/L, and
the specific gravity shows 0.871 and 0.882, respectively.
Biogenesis of Hematite Nanoparticles Employing
Prosopis cineraria and their Antioxidant Property
Authors: Suganya P. , Pavithra T. , Singaravelu G.
Published: August 2022

Interaction of green principles and metallic ions is a fascinating field of research to accomplish synthesis
of biocompatible nanoparticles. In present study, Fe2O3 nanoparticles were fabricated utilizing
phytochemical of wonder tree, Prosopis cineraria a natural herbal infusion. The leaf constituents of P.
cineraria acted as reductant and stabilizer. The UV-vis spectrum showed characteristic SPR at 270 nm
depicts the formation of iron oxide nanoparticles. Fourier transform infrared (FTIR) spectroscopy
suggested that primary carboxylic acid, esters have involved in the synthesis. Further high-resolution
transmission electron microscopy (HR-TEM) revealed that the newly formed nanoparticles are square
shaped with an average size of 24 nm. Field emission scanning electron microscopic (FESEM) studies
depicts their smooth surface without agglomeration. EDAX analysis divulges the elemental composition,
Fe, O, Cl, C, K and Ca. The X-ray diffraction (XRD) studies revealed their crystalline phase.
Toxicological responses were investigated using in vivo studies with experimental fish Cirrhinus
cirrhosus, depicts that the assessed antioxidant enzymes catalase (CAT), glutathione-S-transferase
(GST) and superoxide dismutase (SOD) did not show impact and the mortality was recorded only at
higher (2200 mg kg-1) concentration.
Synthesis of ZnO/CuO Nanocomposite by Ultrasound Assisted
Co-Precipitation Process using Rambutan Peel Extract
Authors: Pham Thi Thu Hanh , Le Viet Binh , Nguyen Ngoc Son , Nguyen Thi Huong
Published: August 2022

In this study, ZnO/CuO nanocomposites were synthesized by a ultrasound assisted co-precipitation
method. Green synthesis of ZnO/CuO nanocomposite using rambutan peel extract as an efficient
stabilizer agent has been investigated. Biosynthesized ZnO/CuO nanocomposites were characterized
by X-ray diffraction (XRD), fourier transform infrared spectroscopy (FT-IR), field emission electron
microscopy (FESEM), energy dispersive X-ray (EDX) and UV-Vis spectroscopy. The FESEM result
showed the size of nanocomposite was 30-100 nm and had the band gap ennergy of 2.37 eV.
Microwave-Assisted Synthesis, Spectral and Biopotential Characterization of
Cr(III), Cu(II) and Zn(II) Complexes with 4-Aminothiophenol and Benzoate Ion
Authors: Sudhakar P. , Rajasekar K. , Balasubramaniyan S. , Selvarani R. , Veeravel C. , Narasimhavarman S.
Published: August 2022

Bioactive metal complexes of Cr(III), Cu(II), and Zn(II) were synthesized with 4-aminothiophenol
and benzoate ion under microwave irradiation. The synthesized metal chelates were characterized by
physical, spectral, biological studies. The geometry and magnetism of all the complexes were monitored
by electronic spectra and magnetic studies. The metal complexes possess the metal-ligand ratios is in
the order of 1:3:3 metal:ligand1:ligand2 for Cr(III), 1:2:2 metal: ligand1:ligand2 for Cu(II) and Zn(II)
complexes were predicted based on the elemental analysis and metal estimation. The synthesized
metal chelates are monomeric and neutral in nature and they show well redox properties based on the
results of conductivity and electrochemical studies. Octahedral geometry of Cr(III), tetragonal geometry
of Cu(II) and square planar geometry of Zn(II) complexes confirmed by IR, far-IR, NMR and EPR
spectral studies. The crystalline nature and lattice parameters of Zn(II) complex were predicted by
using the X-ray diffraction powder method. Biopotential activities of 4-aminothiophenol compared
with metal chelates and standard drug namely chloramphenicol for bacterial and fluconazole for fungal
strain by Agar disc diffusion method using Streptococci, Shigella and C. albicans. The results of DNA
cleavage of pBR322 DNA and binding nature of ct-DNA to Cr(III) complex possess the binding and
cleavage nature of them by predicting the binding constant of the metal complex.
Influence of Ce3+ Substitution on Magnetic Properties and Antibacterial Activity of
Manganese Ferrite Nanoparticles Synthesized by Coprecipitation Method
Authors: Prakash A. , Sagayaraj R. , Jayarajan D. , Aravazhi S. , Chandrasekaran G. , Nithya R.
Published: August 2022

Rare earth element cerium incorporated MnFe2O4 nanoparticles were synthesized by using a
co-precipitation method. Phase signature, vibrational analysis, morphology, element composition,
magnetometry, surface analysis, medicated analysis were studied by XRD, FTIR, FE-SEM, EDAX,
VSM, XPS and antibacterial activity. X-ray diffraction (XRD) reveals a cubic structure and obtained
crystallite size and lattice constant. Fourier transform infrared spectroscopy (FTIR) studies were
confirmed spinel structure ferrite. Vibrating sample magnetometer (VSM) revealed that the magnetic
interaction of materials and obtained saturation magnetization, remnant magnetization and coercivity,
which were impressed by their magnetic properties by Ce3+ incorporated MnFe2O4. Field emission
scanning electron microscope (FE-SEM) observed clear lattice size and magnetic domain nature.
X-ray photoelectron spectroscopy (XPS) confirmed cerium (Ce3+) ions in the all doped materials and
identified the chemical state of ions in the ferrite composite. Antioxidant effects were observed against
Gram-positive and Gram-negative bacteria ferrite nanoparticles.
Green Synthesis of Henna (Lawsonia inermis L.) Based Scaffolds
Authors: Sonkar Sharda Mahilkar , Lumb Anshika
Published: August 2022

Expedient aqueous synthesis of 3,3-arylmethylenebis(2-hydroxy naphthalene-1,4-diones) by
condensation reaction of aromatic aldehyde and 2-hydroxy-1,4-naphthoquinone under reflux and
microwave irradiation using lemon juice as a catalyst has been studied. The green protocol described
herein avoid severe reaction conditions and prove to be effective in terms of good yields, operational
simplicity, easy work up and short reaction time. The antimicrobial properties of the synthesized
compound can be explored and is expected to be comparable to parent compound Lawsone, which is
known to impart red-orange colour.
Decolourization of Safranine Dye by Iron(II)/HClO4/CAB System from
Wastewater Assisted by Response Surface Modeling
Authors: Latha Vijaya , Sukhdev Anu , Bhaskar Pradeep , Deepthi P.R. , Kumar P. Mohan , Manjunatha A.S.
Published: August 2022

The response surface methodology (RSM) is applied for predictive estimation and optimization of
decolourization of safranine, a phenazine dye by a chemical oxidation process using iron(II) as
homogeneous catalyst and chloramine B (CAB) as an oxidant in acid medium. All experiments were
based on the statistical designs in order to develop the predictive regression models and for optimization.
Four independent variables (temperature, catalyst, CAB and acid concentration) were chosen to optimize
the decolourization of safranine. When variance was analyzed (ANOVA), values of R2 and adjusted R2
were 0.9618 and 0.9262, respectively. The data derived from the experiments were in alignment with
a second order regression model. In order to achieve a maximum decolourization, the optimal settings
were found to be 0.0178 M HClO4, 0.004 M CAB, 0.0016 M iron(II) and 43.1 ºC, respectively. Under
optimal reaction conditions, effect of temperature (15, 25, 35, 45 ºC) on decolourization rate was
studied. Data received were in congruence with the second order kinetics. Thermodynamic parameters
were also computed for the decolourization process. Maximum percentage of decolourization of
safranine was predicted and experimentally validated.
"Ich bin auf jeden Fall erfinderischer geworden" oder "Mich hat das alles leider so gelähmt...": Die Rolle personaler dynamischer Fähigkeiten in musikpraktischen Berufen während der Corona- Krise / "I've definitely become more inventive" or "I'm afraid I've been so paralyzed by it all...". The Role of Personal Dynamic Skills in Music Practice Professions during the Corona Crisis
Authors: Müller-Giegler Hendrik
Published: August 2022

Müller-Giegler untersucht in der vorliegenden Querschnittsstudie Einflüsse individueller berufsbezogener Variablen sowie der Berufsgruppenzugehörigkeit für unterschiedliches Erleben der Corona-Krise, die das Leben professioneller Musikerinnen und Musiker grundlegend beeinflusste. Darüber hinaus werden das tatsächliche Verhalten erfasst sowie die Erkenntnisse qualitativ ergänzt. Die Stichprobe umfasst N = 396 Personen in Deutschland, Österreich, der Schweiz und in Luxemburg. Die Auswertung erfolgt mittels Strukturgleichungsmodellierung (PLS-SEM) sowie inhaltsanalytisch. Zentrale Erkenntnisse sind, dass Personale Dynamische Fähigkeiten die negativen Auswirkungen der Corona-Krise reduzieren können sowie die befürchtete Abnahme kultureller Vielfalt grundsätzlich nicht bestätigt werden kann. Unterstützungsansätze für mehr Resilienz liegen in der Überwindung psychologischer, finanzieller und methodischer Barrieren sowie in der Förderung von Reflexion und Austausch - nicht nur in Krisenzeiten. Die Datenerhebung erfolgte per Online-Fragebogen im ersten Jahr der Corona-Krise im Februar 2021.
Die Pandemie als Anlass: Künste und Kulturen als "gesellschaftlich irrelevanter Bereich" / The Pandemic as Occasion: Arts and Cultures as a "Socially Irrelevant Domain"
Authors: Kirchberg Volker , Zembylas Tasos
Published: August 2022

Volker Kirchberg und Tasos Zembylas reflektieren in ihrem Beitrag den gesellschaftlichen Stellenwerts der Künste und Kulturen in den deutschsprachigen Ländern, der mit der Covid-Pandemie deutlich sichtbar geworden ist. In den 1970er Jahren formierte sich ein breiter gesellschaftlicher Konsens über die öffentliche Finanzierung von künstlerischen und kulturellen Aktivitäten, um sozial-, bildungs- und demokratiepolitische Ziele zu erreichen. Dieser Konsens ist seit einigen Jahren weggebrochen und ein Indiz dafür ist die Marginalisierung dieses Bereichs im politischen Diskurs. Bezugnehmend auf unterschiedliche sozialwissenschaftliche Theorien (Niklas Luhmann, Pierre Bourdieu, Ulrich Beck, Hartmut Rosa) untersucht dieser Beitrag gesellschaftliche Krisen und thematisiert das transformative Potential der Künste und Kulturen. Dabei geht er der Frage nach, ob Künste und Kulturen die globalen Probleme der umfassenden sozial-ökologischen Krise neu deuten und an Lösungen mitarbeiten können.
Das Museum im Spannungsfeld von musealer Deutungsmacht und Publikumsorientierung / On the Hinge Function of Museum Guards. The Museum in the Field of Tension Between Sovereignty of Interpretation and Audience Orientation
Authors: Eickelmann Jennifer , Burzan Nicole
Published: August 2022

Museen vermitteln zwischen Kultur und Öffentlichkeiten, wobei dem Aufsichtspersonal eine bislang vernachlässigte Scharnierfunktion zukommt. Eingebettet in die Reflexion musealen Wandels fokussieren wir aus ungleichheits- und institutionentheoretischer Perspektive Spannungsfelder und ihre Bedingungskonstellationen: Dabei geht es erstens um die Rolle des Aufsichtspersonals ,im Dienst' des Museums mit Blick auf die Gestaltung und Umsetzung von Personal-/Publikumskonzepten und zweitens um ihre Verortung bei der Sichtbarmachung von Publikumserwartungen ,im Dienst' des Publikums. Drittens stellen wir eine Systematisierung der paradoxalen Herausforderungen multipler ,Dienstbarkeiten' im Arbeitsalltag dar. Unsere Einsichten fußen auf multimethodisch angelegten Einzelfallstudien und zusätzlichen Beobachtungen in zahlreichen Museen. Das Aufsichtspersonal rückt so als ein Brennglas des kulturorganisationalen Konfliktfelds von Deutungshoheiten einerseits sowie Teilhabe-Rhetoriken andererseits in den Blick.
Zeitschriftenreview: Kulturtourismus in internationalen Journals. Themen und Methoden der aktuellen wissenschaftlichen Betrachtung / Journal Review: Cultural Tourism in International Journals. Topics and methods of current scientific consideration
Authors: Drews Katja
Published: August 2022

Katja Drews gibt in diesem Beitrag einen Überblick über die seit 2017 erschienen Beiträge zum Kulturtourismus in internationalen Tourismusjournals. Anhand von gut zwanzig Beiträgen aus sechs Medien verschiedener Kontinente zeigt sich der interdisziplinäre Kreuzungspunkt zwischen Soziologie, Tourismuswissenschaften, Geografie oder Planungswissenschaften, an dem Forschung zu Kulturtourismus stattfindet. Sichtbar werden Themenfelder zur Kunst, Kultur und Kulturerbe als Wirtschaftsfaktor, Entwicklungsphänomen in Destinationen, aber auch Partizipationsmoment für regionale Bevölkerungen. Der Artikel zeigt beispielhaft erfolgreiche Methoden zur wissenschaftlichen Betrachtung von Gästegewinnung, Regionalimage- und Kulturentwicklung. Mit dem gewählten Betrachtungsraum ergibt sich auch der Blick auf die Konsequenzen der Pandemie für das Tourismusfeld.
JOINTING MACHINE MAINTENANCE ANALYSIS USING RELIABILITY CENTERED MAINTENANCE (RCM) METHOD
Authors: Teja Kusuma Trio Yonathan , Pratama Yoga Aldi
Published: August 2022

Maintenance activities must be carried out appropriately based on the type of machine and machine components. A machine consists of vital components, so that if the components of a machine are continuously subject to fatal damage, it can result in losses for the company. Proper maintenance activities can extend the service life of the machine and can minimize costs for maintenance of damaged machines. PT. Bakrie Pipe Industries is a company that produces steel pipes of various diameters. In producing steel pipes, PT. Bakrie Pipe Industries uses several machines. In 2019, there were several machines with the most frequent problems at Plant KT 24. The machine with the highest downtime of 2660 minutes was the Jointing Machine. In this study, a maintenance analysis was carried out using the Reliability Centered Maintenance (RCM) method on the Jointing Machine at Plant KT 24 PT. Bakrie Pipe Industries. In the results of selecting the maintenance task for the Jointing Machine critical components, it can be concluded that the Roller Blade component with the Potential Cause of Failure is broken Guide Wheel Bearing, the maintenance task is selected, namely Condition-Directed Task, Indexing Clamp component is Condition-Directed Task, Torch component is Condition-Directed Task, Nozzle component is Condition-Directed Task, Roller Blade component with the Potential Cause of Failure is Leaky Cylinder is Failure Finding Task, Bushing Torch component is Condition-Directed Task, and Cooler Torch Hose component is Failure Finding Task.
Current Perspective of Education in the Face of Psychological Challenges and Addictions Caused by the Pandemic
Authors: Hernández Jorge Arturo Velázquez , Guevara Epigmenio Muñoz , Zepeda Jorge Adam Romero , Anaya Agustin Martinez
Published: August 2022

When talking about education, many meanings and references come to mind, since each person interprets this concept based on their ideals and knowledge, and therefore, it is necessary to know all the actions that are carried out for their benefit, from the level basic to superior, because in the end it seeks to implement a quality education that allows increasing the knowledge of students through the teaching-learning process. In 2021, the global pandemic caused by COVID 19 caused a new vision, perception, reality, challenges and empathy with everyone in the world. In this sense, the central issue of highest priority is education, since the pandemic teaches us as a society to understand and reflect on all the cases and actions in our day to day. This pressure goes beyond news regarding the health contingency, emphasis should be placed on 3 specific issues that are Education, Psychology and Addiction. These terms involve a deep analysis about what happened on the educational side,
Marcin Kromer (1512–1589) w walce o reformę Kościoła w Polsce. „Sermo de tuenda dignitate sacerdotii”
Authors: Dziuba Agnieszka
Published: August 2022

The author of this article discusses the circumstances of delivering a speech Sermo de tuenda dignitate sacerdotii by Martinus Cromerus, analyzes its content and style. Proves that iuvenilis sermo is worth attention because of the author’s great rhetorical workshop, excellent biblical and patrological preparation as well as general erudition. The speech was composed according to the priciples of classical rhetoric and it is inspired by the speeches of Cicero.
Meaning-making in the European semiosphere
Authors: Bal Mieke
Published: August 2022

The aim of the paper is to examine how to bring together the general, large area of “semiosphere” (Lotman), the detailed (“close”) analysis of cultural objects, and the point of the flexible methodology we call interdisciplinary. The semiosphere I address is the (uncertain) one we call “Europe”. The starting point is the semiotic status of the exclamation mark as I have used it to connect two preoccupations in the title of a film I made in 2020. The heart of the analysis is ambiguity, in language as well as in other domains. This serves to enhance the uncertainties that always accompany semiotic analysis, which in my view is for the better. After the comments triggered by my film, I turn to visual art as the apparent “other” of language, but through a reflection on colour, I reject that binary in favour of the more flexible concept of the figural (Lyotard). Throughout the article I also undermine the opposition between still and moving images.
Laws of imitation and intermedia narrative – on imitation of word narrative by image narrative
Authors: Long Diyong
Published: August 2022

Image narrative was long regarded as imitation of a story already told in word narrative rather than as direct imitation of real life. In the connection between imitation and medium, there are the phenomena of the medium’s own position and “Anders-streben.” The former emphasizes the medium following its own nature, and the latter means not only following its own nature but transcending itself to pursue another aesthetic effect. “Inter” in intermedia narrative goes beyond the nature or strengths of an artistic work and its medium, resulting in a narrative form that showcases the characteristics of other literary works or media rather than giving full play to its own strengths. Of course, the so-called “laws of imitation” outlined by French sociologist Tarde must be followed: (i) imitation from within to without and (ii) imitation of the superior by the inferior. Whether in the former or the latter, word is a more advantageous medium, since it serves more easily as the model for images or other media to imitate in lyric expression or narrative activities. The laws of imitation are the underlying cause why image, as a spatial narrative medium, manages to achieve the corresponding temporal effect by imitating word narrative.
The German Local Population Database (GPOP), 1871 to 2019
Authors: Roesel Felix
Published: August 2022

I present the first database of historical local population figures for all Germany. The German Local Population Database (GPOP) includes total population in 1871, 1910, 1939, 1946, 1961, 1987, 1996, 2011, and 2019 for the universe of all German municipalities, counties, and states at consistent contemporary boundaries (31 December 2019). The database was hand-collected and assembled from more than 50 sources. The data reflect 150 years of regional development and disparities in Germany. For example, East and West Germany are heavily diverging in population since 1945; and the divide was not reversed but even doubled after reunification.
Deformation of unsaturated collapsible soils under suction control
Authors: Al-Obaidi Qasim A. , Schanz Tom
Published: August 2022

Collapsible soils present significant geotechnical and structural engineering challenges worldwide. They can be found in arid or semi-arid regions and are directly affected by the multi-step wetting procedure due to the reduction of soil suction. The main objectives of this paper are to investigate the volume change behaviour, collapse mechanism and deformation characteristics under the control of suction and net vertical stress. In this study, three types of collapsible soils were investigated such as natural soils of sandy gypseous, silty loess, and artificial soil of gypsum–sand mixture. A series of constant net stress-suction control (wetting and drying) tests using a combination of axis-translation and vapor equilibrium techniques were deployed to cover a wide range of applied suction. The test results show that large volume change and collapse deformation occur upon a stepwise suction decrease. On the other hand, shrinkage behaviour resulting from increases in imposed suction is observed during the drying path. The collapse deformation depends on the stress path and is a function of net normal stress, suction, dry density, and degree of saturation. The water content and the degree of saturation dramatically increase as the applied suction decreases from the initial high to zero values at the drying path.
Bifurcation and chaos in a discrete predator-prey system of Leslie type with Michaelis-Menten prey harvesting
Authors: Chen Jialin , Zhu Zhenliang , He Xiaqing , Chen Fengde
Published: August 2022

In this paper, a discrete Leslie-Gower predator-prey system with Michaelis-Menten type harvesting is studied. Conditions on the existence and stability of fixed points are obtained. It is shown that the system can undergo fold bifurcation, flip bifurcation, and Neimark-Sacker bifurcation by using the center manifold theorem and bifurcation theory. Numerical simulations are presented to illustrate the main theoretical results. Compared to the continuous analog, the discrete system here possesses much richer dynamical behaviors including orbits of period-16, 21, 35, 49, 54, invariant cycles, cascades of period-doubling bifurcation in orbits of period-2, 4, 8, and chaotic sets.
Prospects for Import Substitution and Balancing Ukraine’s External Trade
Authors: Melnik Tatiana , Sierova Liudmyla
Published: August 2022

The development of world economic relations leads to the intensification of mutual exchange of goods between countries. In the article, we have analyzed the dynamics and structure of Ukraine’s external trade, assessed the degree of import dependence of the domestic market, and determined preconditions and national potential of import substitution of goods, including high-tech ones. We have determined public policy areas of import substitution in Ukraine, which include formation of the list of import-substituting goods, stimulation, export diversification, and the industrial and innovative development of the economy. The purpose of the article is to study the imbalances in Ukraine’s external trade in the context of the implementation of import substitution policy. The article analyzes the statistical and economic indicators, with a view to achieving the final research aims, in the period from 2010 to 2022 in Ukraine, in the service of military actions from 2014, and a full-scale invasion in January 2022, as well as conditions in the pandemic years (2019–21). Other countries are also considered concomitantly. We have drawn conclusions on the tendencies to increase the share of imports in the domestic market and proposed recommendations for the development of effective functioning of the internal market.
Emerging trends and knowledge domain of research on urban green open spaces and wellbeing: A scientometric review
Authors: Shrivastava Akansha , Mehrotra Surabhi
Published: August 2022

Green Open Spaces (GOS) and its linkages to human health and wellbeing have received growing attention in the field of urban planning. In spite of increase in number of studies in this field, there is lack of scientometric perspective pertaining to this research domain. The purpose of the study is to map the research status and key research directions in the interdisciplinary domain: Green open spaces, public health and urban planning, using Citespace. Scientometric analysis (co-author, co-citation, co-word and cluster analysis) is conducted for 451 peer reviewed publications, primarily published in last two decades (2000–2021) in the web of science database. The study assessed influential authors, journals and documents to identify the intellectual structure and network of co-authorship and countries to understand research collaborations of this domain. As a result of this review, five emerging research trends in this domain are identified - Emerging data sources, Study areas at various spatial scales, Type of study, Assessment of urban GOS benefits and Urban planning contribution in the research area. In addition, critical review of these trends is conducted to understand corresponding challenges and opportunities. The critical analysis highlighted the need of generating evidence base appropriate for assessing GOS use and user perception, especially in developing nations capturing socio-demographic diversity. The use of Citespace for scientometric analysis facilitated the systematic understanding of this research area by visualizing and analyzing various patterns and trends. This study provides an intensive understanding of present research status and emerging trends of this research domain. Findings in this study are envisioned to provide practitioners, decision makers and researchers with promising future research directions.
Einfluss heliumhaltiger Prozessgase auf den Laser-Strahlschmelzprozess
Authors: Deckers Tobias , Ammann Thomas , Forêt Pierre , Dubiez-Le-Goff Sophie , Zissel Kai , Witt Gerd
Published: August 2022

Kann das Prozessgas bei der Optimierung des PBF-LB/M-Prozesses (z. B. Schichtstärke, Belichtungsgeschwindigkeit oder Prozessierbarkeit neuer Materialen) eine Schlüsselrolle einnehmen? Dieser Beitrag liefert einen Einblick über den aktuellen Forschungsstand der Linde GmbH in Bezug auf heliumhaltige Prozessgase und Vorstellung des neuartigen Prozessgases ADDvance® Laser230. Aufgrund seiner Zusammensetzung ermöglicht das Gasgemisch, die Prozessproduktivität und -stabiliät entscheidend zu verbessern.
Additive Fertigung von keramischen Mikrostrukturen
Authors: Rosen Marcus , Klaiber Markus , Schubert Johannes , Schulze Volker , Zanger Frederik
Published: August 2022

In diesem Beitrag werden die Herausforderungen und Lösungen zur kosteneffizienten additiven Herstellung von keramischen Mikrostrukturen dargestellt. Indem bereits während des Design-Prozesses die Gestalt an die fertigungsspezifischen Anforderungen angepasst wird, kann ein Bauteil mit hohen Qualitätsanforderungen ohne notwendige nachfolgende Bearbeitungsverfahren wie Schleifen additiv hergestellt werden. Durch den Einsatz der badbasierten Photopolymerisation können so Maschinen- und Werkzeugkosten vermieden und der Vorteil der geometrischen Flexibilität ausgenutzt werden.
Rohstoffkritikalität und Kreislaufwirtschaft – Die Grenzen des Wachstums nutzen
Authors: Strutzberg Lydia , Lange Ulrike , Frerichs Tobias
Published: August 2022

Maßnahmen zur Kreislaufführung auf Unternehmensebene werden immer relevanter. Die Wiederverwertung von Roh,- Hilfs- und Betriebsstoffen im Prozess, die Aufarbeitung und Rückführung von gebrauchten Produkten und Bauteilen oder Unternehmenskooperationen können den Materialeinsatz minimieren. Das senkt die Kosten, stärkt die Wettbewerbsposition von Unternehmen und verringert die Abhängigkeit von Importen, insbesondere von kritischen Rohstoffen.
Life Satisfaction and Job Insecurity
Authors: Drishti Elvisa , Carmichael Fiona
Published: August 2022

Fear of the threat of job loss is likely to elicit negative thoughts that have adverse consequences for not only job satisfaction, but also all-around happiness and satisfaction with life. Using nationally representative cross-sectional data, this study provides evidence of the negative effect of perceived job insecurity on life satisfaction in post-communist Albania, an under-researched context. This adverse effect is found to be more pronounced for women and for blue-collar workers: being in a blue-collar job is associated with lower overall life satisfaction, but if this job is perceived as insecure, the negative effect on life satisfaction is magnified. In contrast, workers in well-paying jobs are more satisfied with their lives and, relatedly, higher education also has a positive impact, more so for males. Evidence of the quality-of-life effects of job insecurity can be used to inform workplace policy initiatives and practices, particularly as measures of life satisfaction, well-being, and happiness are increasingly considered appropriate indicators of social progress and the ultimate goal of public policy.
Germination and viability of wild sunflower species seeds stored at room temperature and low humidity for 38 years
Authors: Seiler Gerald J.
Published: August 2022

The effects of prolonged storage on the germination and viability of seeds of sunflower crop wild relatives stored under less-than-optimal conditions in working genebanks is not known. Seeds of two wild annual species, Helianthus annuus (common wild sunflower) and annual H.
petiolaris (prairie sunflower), were stored at room temperature (20 to 22°C) and low humidity of ∼ 22% in the laboratory for 38 years. Germination of stored annual sunflower seeds was 5.5%, while that of prairie sunflower seeds was 0.75%, compared with the germination of freshly
harvested seeds of 34.7 and 18.5%, respectively. Tetrazolium, a vital stain, indicated that the seeds were alive. The viability equations were used to predict final viability of the stored seeds. Using the three tests of viability (germination with and without gibberellic acid, and tetrazolium
staining), all appeared to underestimate the actual condition of the stored seeds of annual sunflower, but provided better predictions for prairie sunflower. This study indicated that wild sunflower seeds can be stored at less than ideal conditions in working genebanks where viability decreases
over time reducing germination, but gibberellic acid treatment can sustainably increase germination to produce a number of plants to maintain the genetic integrity of the original stored seeds often used in long-term prebreeding programmes.
Differences in the practice of binding international law in Southeast Asian countries: How will it affect the stability of law enforcement?
Authors: Joseph Antonio Marcos , Shivana Nur , Shaiza Layina
Published: August 2022

Differences in the practice of binding international law in a sovereign state have different forms which are based on various theories of international law. As a result, each country has different perceptions even in terms of law enforcement. The study uses the library research method where the author refers to legal journals and certain books as well as the opinions of experts. However, in practice, the author prefers to refer to journals and books, because the sources from journals and books can be accounted for. The author also cites sources that have been mentioned through footnotes or footnotes. This study aims to analyze different legal practices in binding international law in Southeast Asian countries and their impact on law enforcement.
Comparative Study Of Alternative Settlements In Indonesia And Timor Leste
Authors: Ar Raidah Salsabila Fakhriyyah
Published: August 2022

Alternative Dispute Resolution (ADR) is a procedure in community practice which then gets recognition in the eyes of the law to settle a case between two or more parties by way out of court in a formal manner (litigation). ADR is considered to have more advantages, including easy, cheap, and fast, so it is more efficient and effective than solving cases in court. This paper aims to examine the existence of ADR in legal practice in Indonesia with a comparative review of the state of Timor Leste. The results of this paper reveal that compared to Timor Leste which is still new, Indonesia has first implemented ADR practices within a formal legal framework. Timor Leste actually also uses the ADR scheme in its daily community practice, but its implementation takes into account the elements of custom and society rather than the legal norms.