bluuebunny/crossref_metadata_2025 huggingface dataset:
The Effect Of Family Support On The Recovery Of Postpartum Mothers Based On Matrilineal Culture In Disaster Risk Areas
Authors: Handini Haspita Rizki Syurya , Yusefni Elda , Rustam Yefrida , Hayati Neni Fitra
Published: October 2022

Backgrounds: The incidence of maternal death during pregnancy and the puerperium is high and has not been resolved. Many factors affect the recovery of postpartum mothers, among which the main factor is family support. The purpose of this study was to examine the effect of family support on the recovery of postpartum mothers based on the matrilineal culture in disaster-affected high-risk areas.

Methods: This type of research is quantitative with a cross-sectional study design. This research was conducted in the independent practice of midwives in Padang City and Pesisir Selatan Regency. The population of this study was postpartum mothers whose samples were taken by consecutive sampling, totaling 140 people. Univariate analysis was conducted in the form of frequency distribution and mean, while bivariate analysis used the Chi-square test.

Results: The results of the study found that 61.4% received good support from their husbands, 63.6% received good support from their parents, 73.6% had normal physical recovery and 2.4% had risky physical recovery. There is an influence of the husband's support and family support on the recovery of postpartum mothers both physically and psychologically (p-value = 0,000).

Conclusion: The support of the husband and parents has a positive effect on the recovery of postpartum mothers, both physically and psychologically. There is a need for counseling and providing knowledge to families about the importance of family support in the recovery process during the postpartum period.
Pemanfaatan Media Booklet Sebagai Optimalisasi Peran Kader Posyandu Bagi Anak Golden Age Period
Authors: Mutalib Rasmin Hi Abd , Maqfiro Siska Nawang Ayunda
Published: October 2022

Background: Golden age period is the time when the child's brain develops very rapidly and is the fastest in absorbing all information. The golden age period is vital or very important in a cycle. This activity aims to educate cadres as a partner of midwives to monitor the golden age period of growth and development. Methods: This activity was held at the Hall of Puskesmas Sulamadaha, starting with a pre-test, followed by the distribution of booklets to 30 cadres from 6 posyandu, an explanation related to the use of booklets about the role of cadres in the golden age period, discussions and questions and answers, then ended with the provision of post-tests. Results: The pre-test of health cadres showed that 2 people (6,7%) have poor knowledge, 22 people (73.3%) have moderate knowledge, and 6 people (20.0%) have good knowledge. Post-test of health cadres showed that 6 people (20.0%) have moderate knowledge and 24 (80.0%) have good knowledge. So, the knowledge of cadres increases after using this media. Conclusion: It is recommended that cadres can carry out and apply and continue to increase knowledge about the role in the golden age period using the booklets that have been distributed.
Pengenalan Kegiatan Peregangan Tubuh Sebagai Aktivitas Fisik Dalam Menunjang Pembelajaran Efektif Siswa Sekolah Dasar
Authors: Pramardika Dhito Dwi , Kasaluhe Meityn Disye , Tanod Wendy Alexander , Gansalangi Ferdinand , Sambeka Yana , Cahyono Eko , Hapsari Destu Ayu
Published: October 2022

Background: Teachers as educators have challenges in their student's learning during the transition from a pandemic to a COVID-19 endemic. Therefore, strategies and innovations are needed to improve effective education, especially in increasing concentration and body fitness. This is also a problem faced at SDN Inpres Enemawira, Tabukan Utara District, Sangihe Islands Regency. Based on this, the team aims to introduce body stretching training as a physical activity to support learning more effectively. Methods: This service uses an educational approach with 11 stages of health planning. The data collection technique is an observation method with a success indicator of 80% of students' ability in body stretching developing as expected. This program targets students in grades 4, 5, and 6, held on July 23, 2022, by the service team of the Nusa Utara State Polytechnic. Results: The results of this activity were as many as 18 students participated in the activity. Then the evaluation results showed that the completeness of 88.9% of participants had developed in following and repeating body stretching movements for three repetitions. Conclusion: The introduction of body stretching activities can support learning more effectively than before being introduced to body-trying activities. It can be seen by increasing students' concentration power and physical fitness.
Selection of Intelligent Rules for the Evolution of Elementary Cellular Automata for Image Encryption
Authors: Al Bdour Nashat
Published: October 2022

The paper is devoted to the search for new approaches to the formation of key arrays for encryption of color images. Emphasis is placed on using the initial key sequence of the smallest length. In this case, the key is the initial state of an elementary cellular automaton for implementing evolution based on a given rule. The use of an evolutionary approach on cellular automata to the formation of large key arrays made it possible to achieve unpredictable image encryption based on a single rule of an elementary cellular automata. The task of the research is to search for the rules of elementary cellular automata, which, based on a small initial key bit sequence, allow one to form a reliable key array of large dimensions for encrypting the bit layers that make up the image. To solve this problem, an experiment was carried out, on the basis of which the search for the necessary rules and options for choosing the elements of each bit array was carried out to encrypt the bit layers of the image. To form each bit key array, different initial conditions were used for elementary cellular automata. It is shown that for different initial conditions and for the chosen rules, the encryption quality is preserved. The most reliable encryption is the use of two key arrays formed on the basis of the evolution of one rule for different initial conditions. As a result of the experiments, the rules were determined (rules 90, 105, 150 and XOR function based on the two previous steps of evolution), which can be used without additional rules. Each bit layer of the image is encrypted using different subarrays of each generated one key array of the same dimension. It has been established that the most effective for encryption is the rule 105 and the XOR function based on the two previous steps of evolution. The resulting histograms of the distribution of brightness for each color of the encrypted image confirm the high quality of encryption based on the proposed method.
A Comparison of Statistical Dependency and Functional Dependency between Attributes Based on Data
Authors: Sug Hyontai
Published: October 2022

Chi-squared test is a standard statistical test to ascertain independence between categorical variables. So, it is recommended to do the test for the attributes in the datasets, and remove any redundant attributes before we supply the datasets to machine learning algorithms. But, if we have many attributes that are common in real-world datasets, it is not easy to choose two attributes to do the independence test. On the other hand, several automated algorithms to find functional dependencies based on data have been suggested. Because functional dependencies show many-to-one relationships between values of attributes, we could conjecture that there might be statistical dependence in the found functional dependencies. For us to overcome the problem of choosing appropriate attributes for statistical dependency tests, we may use some algorithms for automated functional dependency finding. We want to confirm that the found functional dependencies can show statistical dependence between attributes in real-world datasets. Experiments were performed for three different real-world datasets using SPSS to confirm the statistical dependence of functional dependencies that are found by an open-source tool called FDtool, where we can use FDtool for automated functional dependency discovery. The experiments confirmed that there exists statistical dependence in the found functional dependencies and showed improvements in decision trees after removing dependent attributes.
Estimation of States Under Colored Measurement Noise (CMN) Using UFIR and Kalman Filters Modified
Authors: Pale-Ramon Eli G. , Shmaliy Yuriy S. , Morales-Mendoza Luis J. , González-Lee Mario , Pérez-Caceres Silverio , Morales-Mendoza Efrén
Published: October 2022

The estimate process of a moving target trajectory is a well-known problem, where the main objective is to improve the estimation of object position. During the tracking are presented errors or variations between the true position and the estimated. In this paper, we treat such variations as a Gauss-Markov colored measurement noise (CMN). The estimation process is performed in predict and update, where the prediction indicates the next position of the bounding box, and the update is a correction step, which includes the new measurement of the tracking model and helps to improve the estimation. Looking for this improvement we use Kalman and Unbiased Finite Impulse Response filters in the standard version and modified for CMN to demonstrate the filter with the best performance. To test the most robust filter we use a high coloredness factor. The tests were carried out with simulated data (ideal and no ideal conditions) and with benchmark data (no ideal conditions). The UFIR modified for the CMN algorithm showed favorable results with high precision and low RMSE in the object tracking process with benchmark data and under no ideal conditions. While KF CMN showed better results under ideal conditions.
importancia de las emociones en el turismo académico
Authors: Picazo Peral Patricia , Lam González Yen E.
Published: October 2022

El artículo analiza el impacto del contenido emocional de la comunicación universitaria en los estudiantes, y su importancia para elegir el centro de movilidad. Se utilizó una muestra de 201 estudiantes españoles durante sus prácticas Erasmus. Se realizaron entrevistas, acompañadas de un experimento biométrico con el software Noldus Face Reader que analiza las expresiones faciales. Como resultado se obtuvo que el prestigio de la universidad no es tan relevante, siendo la transmisión de emociones de felicidad el elemento más importante en la comunicación universitaria para atraer talento. Se discuten los resultados y su utilidad para el marketing educativo.
Drymini of Madagascar, with description of a new genus and three new species (Hemiptera: Heteroptera: Rhyparochromidae)
Authors: Zámbó Andás , Baňař Petr , Kovács Szilvia , Kondorosy Előd
Published: October 2022

Malgadrymus Zámbó & Kondorosy, gen. nov., the first endemic genus of Drymini (Hemiptera: Heteroptera: Pentatomomorpha: Lygaeoidea: Rhyparochromidae: Rhyparochrominae), with two new species is described from Madagascar. A key to the species is provided and relationships to other drymine genera are discussed. Appolonius madagascariensis Zámbó & Kondorosy, sp. nov., the first member of the genus from the island, is described from Madagascar. A list of Malagasy Drymini, including 5 genera and 16 species (3 undescribed), and a key to the genera from Madagascar are given. We provide new distribution data for the following species: Salaciola acutangulata Slater, 1994, Salaciola caliginosa Slater, 1989, Salaciola nana Bergroth, 1906, Salaciola signaticornis Linnavuori, 1978, Sinierus capensis Dallas, 1852, and Sinierus nudus Scudder, 1984. Salaciola nana is also recorded from the Republic of the Congo for the first time.
Comparison of crystal structure and DFT calculations of triferrocenyl trithiophosphite’s conformance
Authors: Shekurov Ruslan P , Khrizanforov Mikhail N , Bezkishko Ilya A , Gerasimova Tatiana P , Zagidullin Almaz A , Islamov Daut R , Miluykov Vasili A
Published: October 2022

A triferrocenyl trithiophosphite was studied by X-ray single-crystal diffraction. Triferrocenyl trithiophosphite has nine axes of internal rotation: three P–S bonds, three C–S bonds and three Fe–cyclopentadienyl axes. Rotation around the P–S bonds results in a totally asymmetric structure with three ferrocenylthio groups exhibiting different orientations towards the phosphorus lone electron pair (LEP). A comparison of DFT calculations and X-ray diffraction data is presented, herein we show which conformations are preferred for a given ligand.
First record of Bruchidius apicipennis (Heyden, 1892) (Coleoptera, Chrysomelidae) from Siberia
Authors: Legalov Andrei A. , Reshetnikov Sergei V.
Published: October 2022

The first record of Bruchidius apicipennis (Heyden, 1892) (Chrysomelidae: Bruchinae: Bruchini) from Altaiskii Krai (Western Siberia, Russia) is given. It is the most northern find of this species. The host plant, distribution map, illustrations and redescription of Bruchidius apicipennis are presented.
Dynamical behavior of a stochastic highly pathogenic avian influenza A (HPAI) epidemic model via piecewise fractional differential technique
Authors: Al-Qureshi Maysaa , Rashid Saima , Jarad Fahd , Alharthi Mohammed Shaaf
Published: October 2022

In this research, we investigate the dynamical behaviour of a HPAI epidemic system featuring a half-saturated transmission rate and significant evidence of crossover behaviours. Although simulations have proposed numerous mathematical frameworks to portray these behaviours, it is evident that their mathematical representations cannot adequately describe the crossover behaviours, particularly the change from deterministic reboots to stochastics. Furthermore, we show that the stochastic process has a threshold number $ {\bf R}_{0}^{s} $ that can predict pathogen extermination and mean persistence. Furthermore, we show that if $ {\bf R}_{0}^{s} > 1 $, an ergodic stationary distribution corresponds to the stochastic version of the aforementioned system by constructing a sequence of appropriate Lyapunov candidates. The fractional framework is expanded to the piecewise approach, and a simulation tool for interactive representation is provided. We present several illustrated findings for the system that demonstrate the utility of the piecewise estimation technique. The acquired findings offer no uncertainty that this notion is a revolutionary viewpoint that will assist mankind in identifying nature.
Modeling the dynamics of innate and adaptive immune response to Parkinson's disease with immunotherapy
Authors: Al-Tuwairqi Salma M. , Badrah Asma A.
Published: October 2022

A mathematical model was built using delay differential equations to investigate the effect of active and passive immunotherapies in delaying the progression of Parkinson's Disease. The model described the dynamics between healthy and infected neurons and alpha-synuclein with innate and adaptive immune responses. The model was examined qualitatively and numerically. The qualitative analysis produced two equilibrium points. The local stability of the free and endemic equilibrium points was established depending on the basic reproduction number, $ R_0 $. Numerical simulations were executed to show the agreement with the qualitative results. Moreover, a sensitivity analysis on $ R_0 $ was conducted to examine the critical parameters in controlling $ R_0 $. We found that if treatment is administered in the early stages of the disease with short time delays, alpha-synuclein is combated, inhibiting activated microglia and T cells and preserving healthy neurons. It can be concluded that administering time of immunotherapies plays a significant role in hindering the advancement of Parkinson's disease.
Pandemic disease detection through wireless communication using infrared image based on deep learning
Authors: Alhameed Mohammed , Jeribi Fathe , Elnaim Bushra Mohamed Elamin , Hossain Mohammad Alamgir , Abdelhag Mohammed Eltahir
Published: October 2022

Rapid diagnosis to test diseases, such as COVID-19, is a significant issue. It is a routine virus test in a reverse transcriptase-polymerase chain reaction. However, a test like this takes longer to complete because it follows the serial testing method, and there is a high chance of a false-negative ratio (FNR). Moreover, there arises a deficiency of R.T.–PCR test kits. Therefore, alternative procedures for a quick and accurate diagnosis of patients are urgently needed to deal with these pandemics. The infrared image is self-sufficient for detecting these diseases by measuring the temperature at the initial stage. C.T. scans and other pathological tests are valuable aspects of evaluating a patient with a suspected pandemic infection. However, a patient's radiological findings may not be identified initially. Therefore, we have included an Artificial Intelligence (A.I.) algorithm-based Machine Intelligence (MI) system in this proposal to combine C.T. scan findings with all other tests, symptoms, and history to quickly diagnose a patient with a positive symptom of current and future pandemic diseases. Initially, the system will collect information by an infrared camera of the patient's facial regions to measure temperature, keep it as a record, and complete further actions. We divided the face into eight classes and twelve regions for temperature measurement. A database named patient-info-mask is maintained. While collecting sample data, we incorporate a wireless network using a cloudlets server to make processing more accessible with minimal infrastructure. The system will use deep learning approaches. We propose convolution neural networks (CNN) to cross-verify the collected data. For better results, we incorporated tenfold cross-verification into the synthesis method. As a result, our new way of estimating became more accurate and efficient. We achieved 3.29% greater accuracy by incorporating the "decision tree level synthesis method" and "ten-folded-validation method". It proves the robustness of our proposed method.
Pravo oca na roditeljski i očinski dopust u zemljama EU
Authors: Simović-Zvicer Vesna
Published: October 2022

Equality between men and women in the exercise of rights is one of the fundamental principles of the European Union, which is enshrined in the acts of primary legislation and in secondary legislation. However, the directive did not ensure full equality of fathers and mothers with regard to reconciling professional and family obligations, which was the reason for the adoption of the new Directive 2019/1158, which contains provisions aimed at striking a balance between work and family obligations, and which was adopted on 20 June 2019. This Directive repeals Council Directive 2010/18/ EU, that is, Member States have a period of time to comply with the new Directive within three years of its entry into force. In addition to the importance of involving the father in childcare at a young age, the paper also points to EU legal acts that regulate the reconciliation of fathers’ professional and family responsibilities. In addition, an overview of available data on the use of childcare leave by fathers is provided. The paper pays particular attention to existing solutions at EU level for the use of parental and paternity leave, comparing them to those contained in the new Directive 2019/1158.
Jacques Defourny, Marthe Nyssens (Eds.): Social Enterprise in Central and Eastern Europe. Theory, Models and Practice
Authors: Baturina Danijel
Published: October 2022

Knjiga Social Enterprise in Central and Eastern Europe. Theory, Models and Practice nastala je u okviru International Comparative Social Enterprise Models – ICSEM1 – projekta koji je htio pokazati da će socijalno poduzetništvo kao polje imati puno više koristi od povezivanja napora na konceptualizaciji s velikom raznolikošću socijalnih poduzeća nego od dodatnog i ambicioznog pokušaja davanja obuhvatne definicije. Polazeći od hipoteze koja bi se mogla nazvati »nemogućnošću jedinstvene definicije«, ICSEM-ova se istraživačka strategija oslanjala na pristupe odozdo prema gore kako bi zahvatio fenomen socijalnih poduzeća u njihovom lokalnom i nacionalnom kontekstu. Ova je strategija omogućila uzimanje u obzir i davanje legitimiteta lokalno ugrađenim pristupima, istovremeno dopuštajući identifikaciju glavnih modela socijalnih poduzeća kako bi se područje definiralo na zajedničkim osnovama na međunarodnoj razini.
Evgueni Vinogradov, Birgit Leick, Djamchid Assadi (Eds.): Digital Entrepreneurship and the Sharing Economy
Authors: Kuleto Valentin
Published: October 2022

E. Vinogradov, B. Leick and D. Assadi research the profound relations between digital entrepreneurship, sharing economy, disruptive innovations, artificial intelligence, blockchains, the internet and other variables. They point that “the concept of the sharing economy has become increasingly popular in the past few decades in response to major technology and societal shifts. As the digital revolution progresses, a dynamic change associated with the sharing economy is altering the way how transactions between individuals, businesses and organizations are shaped and delivered”. In that context, the author finds that “…this shift also poses potentially drastic changes for the society to grapple with, as the new innovative technologies permeate products and services as well as entire business models through, e.g., artificial intelligence (AI), cryptocurrencies, blockchain technologies, internet of things, and technology-based surveillance”.
Raconter une histoire, raconter l’histoire. Penser la peinture narrative à la période moderne (1435-1775)
Authors: Caviglia Susanna
Published: October 2022

Cet article interroge les règles, caractéristiques et développements des images narratives entre les prémisses d’un discours théorique occidental avec la publication du De Pictura de Leon Battista Alberti en 1435, et les commencements de la réflexion néo-classique avec l’arrivée de Jacques-Louis David à Rome en 1775. En suivant l’évolution à la fois des modalités de la représentation visuelle et du discours théorique sur la peinture narrative à l’époque moderne, l’auteur réintègre les questionnements abordés dans la perspective historiographique contemporaine. Si l’image narrative demeure difficile à définir, elle peut néanmoins être assimilée à toute image qui produit un récit. Par conséquent, la théorie littéraire et les développements de la narratologie fournissent un cadre conceptuel propice pour penser la narration dans les arts visuels.
La reprise de l’histoire. Révisions du récit national dans les œuvres de Titus Kaphar, Sonya Clark et Fabiola Jean-Louis
Authors: Valance Hélène
Published: October 2022

Cet article examine le travail de trois artistes africains-américains contemporains, Sonya Clark, Titus Kaphar et Fabiola Jean-Louis, dont les œuvres réécrivent l’histoire et l’histoire de l’art américaines entre toile et texte. Chez ces artistes, le récit opère toujours un retour, une redite, une révision qui se développe notamment dans la reprise ironique d’images familières. Ici la tradition textile, en elle-même riche d’histoire(s), est redéployée pour déchirer, couvrir, ou encore travestir le roman national et son imagerie. Alors que les performances de Clark procèdent à un détricotage littéral de l’histoire nationale, Kaphar enveloppe des œuvres du canon américain pour leur conférer une nouvelle épaisseur, tandis que Jean-Louis donne corps au papier pour replacer des figures de femmes noires dans la tradition visuelle occidentale. Chacun de leurs gestes « retextualise » les épisodes connus de l’histoire familière des États-Unis, et contribue à étoffer le récit du roman national.
Intersection of Disaster Resilience and Cultural Heritage Preservation
Authors: Carpenter Erika Cross , Alexander David J.
Published: October 2022

Global warming is a constant threat to coastal communities and rising sea levels and increased flooding in these areas. Flooding contributes to the damage and loss of historically and culturally significant structures and buildings, which are an important component in strengthening community longevity and resilience. This study examines the ways world heritage cities mitigate disaster risk, specifically flood risk. It uses the city of Savannah, Georgia as a case study to examine how incorporating historic preservation into flood risk planning is a vital part of flood risk resilience. By examining existing flood maps, projected sea level rise risk areas, and subtropical storm flood patterns in relation to the locations of recorded historical and archaeological sites and structures, this study identifies historically significant African American sites and buildings mapped as low-risk for some flood risks, but high risk for other flood risks, which raises the need for more representation and equity in the protection and cultural representation of historically marginalized groups.
Performance Comparison of Machine Learning Algorithms for Dementia Progression Detection
Authors: Tripathi Tripti , Kumar Rakesh
Published: October 2022

Dementia is a neurological disease that that encompasses a wide range of conditions like verbal communication, problem-solving, and other judgment abilities that are severely sufficient to interfere with daily life. It is among the leading causes of vulnerability among the elderly all over the world. A considerable amount of research has been conducted in this area so that we can perform early detection of the disease, yet further research into its betterment is still an emerging trend. This article compares the performance of multiple machine learning models for dementia detection and classification using brain MRI data, including support vector machine, random forest, AdaBoost, and XGBoost. Meanwhile, the research conducts a systematic assessment of papers for the clinical categorization of dementia using ML algorithms and neuroimaging data. The authors used 373 participants from the OASIS database. Among the tested models, RF model exhibited the best performance with 83.92% accuracy, 87.5% precision, 81.67% recall, 84.48% F1-score, 81.67% sensitivity, and 88.46% specificity.
Kinetics and Microstructures of Cellular Recrystallization of Single Crystal Superalloy DD6
Authors: Xiong Ji Chun , Hu Li Jie , Li Jia Rrong
Published: October 2022

The samples of single crystal superalloy DD6 were grit blasted and heat treated at 1100°C for 0.5h, 1h, 2h, 4h, 8h, 16h at vacuum atmosphere, respectively, then the recrystallization microstructure and kinetics of DD6 alloy was investigated. The results showed that the cellular recrystallization grains nucleated in grit blasted single crystal samples heat treated at 1100°Cfor 0.5h, 1h, 2h, 4h, 8h, 16h. With the increase of the duration of heat heating process, the configuration of cellular recrystallization cleared up, and the depth of cellular recrystallization increased. While the coarse γ phase formed in the cellular recrystallization, and the shape of γ phases in the cellular recrystallization was almost equiaxed near the surface of the grit blasted samples and lamellar at the interface between cellular recrystallization and the original zone, respectively. The lamellar γ phase in the cellular grains was radial, and perpendicular to the cellular grain boundary. The recrystallization kinetics of single crystal superalloy DD6 was disclosed, with the increase of the duration of heat heating process, the depth of cellular recrystallization increase quickly and then almost keeps stable at last. The velocity of growth of cellular recrystallization increase very quickly at first, and then decrease at some stage, at last, the velocity tends to zero.
Effects of Ce on Microstructure of As-Cast Mg-6Zn Alloy
Authors: Yang Wen Peng , Zhou Jing Jing , Cui Hong Bao , Xu Zhi Chao , Wang Ying , Guo Xue Feng
Published: October 2022

Phase constitution and phase transition temperature are important factors to influence deformation parameters, recrystallization behavior and density of precipitates of wrought Mg-Zn-Ce alloys. In this work the microstructures and phase constitution of as-cast Mg-6Zn-xCe (x = 0.6, 1, 2) alloys were characterized by XRD, SEM, TEM and DTA. The results show that the major compounds in Mg-6Zn-0.6Ce are blocky Mg4Zn7 phase, laminar Mg7Zn3 phase and cellular T phase. All compounds are almost blocky and cellular T phase in Mg-6Zn-1Ce alloy, and all T phase transformed to block in Mg-6Zn-2Ce alloy. The onset temperatures of phase transformation of T phase are increased with increasing Ce contents due to the decrease of solid solubility of Zn in T phase. The corresponding endothermic peaks of T phase in Mg-6Zn-0.6Ce, Mg-6Zn-1Ce and Mg-6Zn-2Ce are 358 °C, 494 °C and 514 °C, respectively. The increase of content of Ce result in the decrease of the concentrations of Zn in matrix, which leads to the decrease of β1′ precipitate density and the increase of onset temperatures of melting of matrix.
Impact of Rare Earth Addition on Creep Rupture Behavior of 316LN Austenitic Stainless Steel at 700°C
Authors: Yang Ren Xian , Cai Xin , Zheng Lei Gang , Hu Xiao Qiang , Li Dian Zhong
Published: October 2022

Effect of rare earth (RE) on creep rupture behavior of 316LN austenitic stainless steel (316LN steel) was investigated after crept at 700°C under the stress in the range from 125MPa to 200MPa, by the optical microscopy (OM), scanning electron microscopy (SEM) and electron backscatter diffraction (EBSD). The results show RE addition in 316LN steel increased the creep rupture ductility at high stress, but reduced the creep rupture ductility at low stress. Under 200MPa, RE addition increased the creep rupture strain of 316LN steel from 0.558 to 0.787 but the creep rupture strain after crept under 150MPa was decreased from 0.875 to 0.566. The fracture mode of 316LN steel was also apparently impacted by the RE addition. The typical ductile fracture feature of homogeneous dense dimples was obviously observed in NRE steel after crept rupture under all stresses. While in 32RE steel, small amount of intergranular fracture fractographs under low stress appeared instead of partial dimples under high stress. Moreover, it is noted that RE addition in 316LN steel promotes to precipitate a great number of fine Laves particles within grains. These Laves particles strengthening the matrix resulted in the strain concentration on grain boundaries, which might sensitively induce crack initiation on grain boundaries during long-term creep under the low stress.
Synthesis of Composite Carbon Fiber Electrode Materials for CO2 Reduction
Authors: Shen Peng , Ma Dan , Li Jing , Tang Yu , Ding Qing Yun
Published: October 2022

For the purpose of environmental protection, the solution to the excessive release of carbon dioxide in the atmosphere has become the focus of current research. The electrochemical reduction of carbon dioxide, which enables the capture and storage of carbon dioxide and its conversion into new compounds, has shown its effectiveness. By studying various methods of preparing CO2 absorption electrodes, Carbon fiber material is considered as a promising electrode material due to its good electrical conductivity and availability. In this paper, Ag/PTFE composites (Silver as catalyst, PTFE as hydrophobic agent), combined with carbon fibers, are used as Gas diffusion electrodes (GDE) materials. After verifying its hydrophobicity by contact angle measurement, the performance of electrode is tested. The results show that the new electrodes synthesised are suitable for use as Gas diffusion electrodes materials (GDE) and that Ag catalysts combined with carbon nanofibers can be used for the electrochemical reduction of CO2.
Macro-Micro Coupled Simulation of SLM Process with Inconel 718 Superalloy
Authors: Xia Hu Xiang , Tao Pan , Feng Qiu Shui , Yang Cong , Xu Qing Yan , Dong Hong Biao
Published: October 2022

As an increasingly mature additive manufacturing technology for metal materials, Selective Laser Melting (SLM) technology has become a hot topic in many application fields. However, due to the fast-moving velocity and small scale of the laser beam in the SLM process, it is very difficult to directly observe the microstructural changes in the SLM additive manufacturing process. In this study, a macro-micro coupled simulation model of Inconel 718 SLM process was established to study the solidification behavior of the molten pool. The macro temperature field is obtained by the finite difference method based on the birth and death grid algorithm. The local temperature intercepted from the macro temperature field is employed as the input condition for phase field microstructure calculation. Dendrite morphology, intercellular spacing, and microsegregation are simulated under the coupled model. The result shows that the solidification structure of IN718 alloy in the micro molten pool formed by SLM grows in the form of a non-flat interface. The primary dendrite spacing predicted by the simulation is in good agreement with Hunt model at the initial stage of solidification. The solute trapping caused by non-equilibrium solidification makes dendrites dissolve more Nb, resulting in microsegregation.
Docetaxel-resistant triple-negative breast cancer cell-derived exosomal lncRNA LINC00667 reduces the chemosensitivity of breast cancer cells to docetaxel via targeting miR-200b-3p/Bcl-2 axis
Authors: Li Jindong , Kang Jie , Liu Weiyan , Liu Jiazhe , Pan Gaofeng , Mao Anwei , Zhang Qing , Lu Jingfeng , Ding Junbin , Li Hongchang
Published: October 2022

Development of docetaxel (TXT) resistance is a major obstacle for triple-negative breast cancer (TNBC) treatment. Additionally, chemoresistant cell-derived exosomes were able to change the chemo-response of chemosensitive recipient cells via transportation of lncRNAs. It has been shown that lncRNA LINC00667 level was significantly elevated in breast cancer tissues. Therefore, we explored whether LINC00667 level is increased in TXT-resistant TNBC cell-derived exosomes. In addition, whether exosomal LINC00667 derived from TXT-resistant TNBC cell could affect TXT sensitivity in TXT-sensitive TNBC cells was investigated as well. In the present study, exosomes were isolated from the TXT-resistant TNBC cells and from TXT-sensitive TNBC cells. Next, the level of LINC00667 in the isolated exosomes was detected with RT-qPCR. We found that LINC00667 expression was obviously elevated in TXT-resistant TNBC cell-derived exosomes compared to that in TXT-sensitive TNBC cell-derived exosomes. In addition, LINC00667 could be transferred from TXT-resistant TNBC cells to TNBC cells via exosomes. Moreover, TXT-resistant TNBC cell secreted exosomal LINC00667 markedly reduced the sensitivity of TNBC cells to TXT via upregulation of Bcl-2. Meanwhile, downregulation of LINC00667 notably enhanced the sensitivity of TXT-resistant TNBC cells to TXT through downregulation of Bcl-2. Additionally, LINC00667 was considered to be a ceRNA to sponge miR-200b-3p, thereby elevating Bcl-2 expression. Collectively, TXT-resistant TNBC cell-derived exosomal LINC00667 could decrease the chemosensitivity of TNBC cells to TXT via regulating miR-200b-3p/Bcl-2 axis. These findings suggested that LINC00667 might serve as a promising target for enhancing sensitivity of TNBC cells to TXT therapy.
'n Raamwerk vir Opleiding in Inligtingsbestuur
Authors: Pistorius C. W.I.
Published: October 2022

In this article the author develops a framework for the development of the information management function to serve as a basis for training in the management of information. He maintains that a basic need for training in this function exists which must be more management rather than technically oriented. As a line function it is an integral part of every manager's job. Development of the function implies training in both data gathering and data processing as staff functions.
Van die redakteur: 'n Nuwe bedeling!
Authors: Office Editorial
Published: October 2022

No abstract available.
Organizational Development: Behavioural Science Interventions for Organizational Improvement
Authors: Schmikl Erick D.
Published: October 2022

No abstract available.
Standpunte/Viewpoints
Authors: Office Editorial
Published: October 2022

No abstract available.
Die Toepassing van Kapitaalinvesteringsmetodes deur Nie-Vervaardigingsondernemings
Authors: Lambrechts I. J.
Published: October 2022

Dr Lambrechts suggests in this paper that it is generally believed the capital investment methods applied by manufacturing organizations are scientifically more advanced than those applied by non-manufacturing organizations. His findings stem from an empirical investigation of a number of noted industrial and commercial undertakings in South Africa, and highlight a number of shortcomings in the capital investment practices of the group of non-manufacturing concerns investigated. His findings indicate also a large number of differences, in terms of previously defined criteria, between the capital investment practices of non-manufacturing organizations and those of manu­facturing organizations. Dr Lambrechts concludes that the general belief that manufacturing concerns use more scientific capital invest­ment techniques than others seems to be valid and he identifies a number of possible reasons why this is the case.
Vooruitskatting en modelbou van die bankwese
Authors: De Lange P. W.
Published: October 2022

C-Bank's business is lending money. Our success depends on our ability to determine how much money should be loaned to whom and under what terms. Our success, particularly over periods of loose money, also depends on our ability to build and maintain closer relationships with customers than our competitors do. Those relation­ships depend on the quality of our service, including the speed with which we can respond to loan requests and the general value of our counsel as financiers. All of this requires extensive financial analysis, sometimes under heavy time pressure. It is, therefore, not surprising at all that we would use the computer to permit faster and more comprehensive quantitative analysis.
Monkeypox
Authors: Kamath Vasantha , Sridhar Srivatsav , Reddy K. Deepthi
Published: October 2022

Monkeypox (MPX) virus is an orthopoxvirus that causes human MPX, a viral disease with symptoms indistinguishable to smallpox, which includes fever and rash. Following the worldwide eradication of smallpox in 1980, MPX emerged as the most significant orthopoxvirus infection in humans. Cases are most often reported from rural areas of Central and West African countries, particularly in regions close to tropical rainforest where people may have contact with infected animals. MPX is transmitted through direct contact with respiratory droplets of another person who has MPX in the home or in a health facility, or with contaminated materials such as bedding. Laboratory diagnostics are the principal components for the identification and surveillance of the disease, and new tests are needed for a more precise and rapid diagnosis. New therapeutics and vaccines offer hope for the treatment and prevention of MPX; however, more research must be done before they are ready to be deployed in an epidemic setting.
On a conjecture of M. R. Murty and V. K. Murty
Authors: Ding Yuchen
Published: October 2022

Let
$\omega ^*(n)$
be the number of primes p such that
$p-1$
divides n. Recently, M. R. Murty and V. K. Murty proved that
$$ \begin{align*}x(\log\log x)^3\ll\sum_{n\le x}\omega^*(n)^2\ll x\log x.\end{align*} $$

They further conjectured that there is some positive constant C such that
$$ \begin{align*}\sum_{n\le x}\omega^*(n)^2\sim Cx\log x,\end{align*} $$

as
$x\rightarrow \infty $
. In this short note, we give the correct order of the sum by showing that
$$ \begin{align*}\sum_{n\le x}\omega^*(n)^2\asymp x\log x.\end{align*} $$
What smell and taste disorders by SARS-CoV-2 do we know? Predictive value of the Venezuelan Olfactory Test and RT-PCR molecular analysis in COVID-19 infection
Authors: Pieruzzini R. , Ayala-Grosso C. , de Jesus Navas J. , Rodriguez W. , Parra N. , Luque E. , Sanchez-Gago A. , Gonzalez S. , Hagobian A. , Grullon A. , Diaz K. , Morales M. , De Jesus M. , Pena S. , Rodriguez L. , Pena L.L. , Asaro A. , Magris M.
Published: October 2022

Background: Smell and taste disorders are reported very frequently and at an early stage in SARS-CoV-2 infectious disease. These symptoms could be sensitive and specific to establish possible severity of the infection, and may suggest the flow of decisions as to further therapy. Objective: We asked whether smell and taste impairment are earlier and more sensitive symptoms than the RT-PCR molecular assays for SARS-CoV-2 detection. Methods: Subjects (N=275) with a probable COVID-19 diagnosis were classified as follows: Symptomatic with chemosensory dysfunction, symptomatic without chemosensory dysfunction, and asymptomatic. Validated unbiased testing of the chemosensory dysfunction was performed by means of the Venezuelan Olfactory Test and taste test. Nasal swabs and blood samples were analyzed by RT-PCR molecular analysis a rapid diagnostic test to detect the SARS-CoV-2 virus and viral antibodies, respectively. Smell and taste testing and RT-PCR were performed every 3 to 5 days to patients until full recovery. Results: Out of 144 patients that were positive for SARS-CoV-2: 45.83% had COVID-19 symptoms, smell and taste disorders; 23.61% had COVID-19 symptoms but not smell or taste disorders, and 30.55% were asymptomatic. Mild hyposmia and hypogeusia were frequently associated with SARS-CoV-2 symptoms. Recovery from chemosensory dysfunction occurred between day 3 and 14. RT-PCR becomes negative after 21 days. The Venezuelan Olfactory Test and taste test has a 61.68% positive predictive value, 45.83% sensitivity, and 68.7% specificity for SARS-CoV-2. Conclusions: Smell and taste disorders are associated symptoms with SARS-CoV-2 infection, but not a predictor of the disease, as compared to the molecular RT-PCR test.
О голоморфных отображениях строго псевдовыпуклых областей
Authors: Sukhov Alexandre Borisovich
Published: October 2022

Исследуется граничная регулярность собственных голоморфных отображений между строго псевдовыпуклыми областями с границами класса $C^2$. Устанавливается обобщение теоремы Вонга-Розея на кусочно гладкие строго псевдовыпуклые области.
Библиография: 37 названий.
Isolated unconjugated hyperbilirubinemia in adults: the Gilbert’s versus Criggler Najar Syndrome Type 2 conundrum.
Authors: THAKUR Devyani , SHARMA Yogita
Published: October 2022

Gilbert’s syndrome is a genetic disorder characterised by non-hemolytic unconjugated hyperbilirubinemia. It is caused by mutations in the UGT1A1 gene which codes for the enzyme uridine diphosphate glucoronosyl transferase-1, which conjugates bilirubin for excretion. Affected individuals are usually asymptomatic apart from a mild jaundice and investigations reveal a mild isolated indirect hyperbilirubinemia. This may be exacerbated in the face of environmental and physical stressors. It is very similar in presentation to Criggler-Najjar syndrome (CNS) type 2. There is a small risk of kernicterus in patients with CNS type 2 needing daily phenobarbitone therapy. This risk is miniscule in Gilbert’s syndrome. Genetic testing for polymorphisms of the UGT1A1 gene is the diagnostic clincher for Gilbert’s syndrome, but it can also be picked up by evaluating the response to phenobarbitone and fasting, particularly in resource poor settings. Due to limited availability, case reports documenting the genetic mutational analysis are sparse. We reported one such rare case with an unusually high indirect hyperbilirubinemia in Gilbert’s syndrome confirmed by both phenobarbitone response and genetic analysis.
Remote Access Greenhouse Automation Application Based On LabVIEW
Authors: KOCAMAN Behçet , GÜLER Mehmet Fatih
Published: October 2022

Various automatic control systems have been established in order to increase the yield of the products to be obtained from the plants grown in the greenhouses. These control systems come into prominence in ensuring the automatic solution of the determined problems by being activated quickly, controlling the temperature and moisture values in the greenhouse and in the stable operation of the system. In this study, remote access greenhouse automation application was performed with the NI MyRIO control card, and system data was monitored and controlled in real time via the Laboratory Virtual Instrument Engineering Workbench (LabVIEW) graphical program. The values of the plants to be grown in the greenhouse such as water, temperature, moisture and appropriate photosynthesis light ratio are measured and determined by the sensors used in the system and shown to the user with the LabVIEW interface program with the NI MyRIO control card.
Helisel Kanatçıklara Sahip Bir Boruda Nanoakışkan Kullanımının ve Helisel Kanatçık Sayısının Değişiminin Isı Transferi Üzerindeki Etkilerinin İncelenmesi
Authors: DOĞAN Mustafa , DEMİRCAN Tolga
Published: October 2022

Bu çalışmada iç yüzeyinde helisel kanatçıklara sahip bir boruda nanoakışkan kullanımının ısı transferi üzerindeki etkileri incelenmiştir. Bu kapsamda kanatçıksız, tek helisel kanatçıklı, çift helisel kanatçıklı ve üç helisel kanatçıklı boru olmak üzere dört model geometrisi belirlenmiştir. Borunun içerisinden sabit giriş sıcaklığına sahip hBN-su (hekzagonal bor nitrür-su) nanoakışkanı geçtiği, boru yüzeylerine ise sabit ısı akısı uygulandığı varsayılmıştır. Baz akışkan olarak kullanılan suyun içerisine hacimsel olarak %0, %0,5, %1, %1,5, %2 ve %2,5 oranında hBN nano partikülü katıldığı düşünülmüştür. Hesaplamalı Akışkanlar Dinamiği yardımıyla sayısal analizler gerçekleştirilmiştir. Çalışmanın sonucunda kanatçık sayısının ve nanoakışkanın karışım oranının artırılmasıyla ortalama akışkan sıcaklığının, ısı taşınım katsayısının ve Nusselt sayısının arttığı görülmüştür. En düşük Nusselt sayısı kanatçıksız borudan su aktığı durumda 25,93 olarak, en yüksek Nusselt sayısı ise üç helisel kanatçık ve %2,5 hacimsel karışım olduğu durumda 97,036 olarak belirlenmiştir. Dolayısıyla bir boru içerisine helisel kanatçık eklemenin ve hBN-su nanoakışkanı kullanımının ısı transferi üzerinde olumlu yönde etkisi olduğu gözlemlenmiştir.
Katı Hal Güç Kuvvetlendiricisinin LC-GFDM İletim Sinyali Üzerindeki Etkisinin İncelenmesi
Authors: ŞİMŞİR Şakir , TAŞPINAR Necmi
Published: October 2022

Bu çalışmada, en yaygın kullanılan yüksek güç kuvvetlendiricileri arasında yer alan katı hal güç kuvvetlendiricisi (SSPA), düşük karmaşıklı-genelleştirilmiş frekans bölmeli çoğullama (LC-GFDM) vericisine uygulanmış olup, bu tür doğrusal olmayan yüksek güç kuvvetlendiricilerinin, LC-GFDM iletim sinyali ve sistem performansı üzerindeki etkisinin ortaya konması hedeflenmiştir. Bu amaçla, LC-GFDM dalga formunun hem spektral karakteristiği hem de bit hata oranı (BER) performansı, SSPA’nın sırasıyla doğrusallık derecesi ve çalışma noktasını belirleyen düzgünlük katsayısı (p) ve giriş geri çekme (IBO) parametrelerinin çeşitli değerleri için incelenmiştir. Simülasyon çalışmalarında, yüksek PAPR’lı LC-GFDM sinyallerinde SSPA ile gerçekleştirilen kuvvetlendirme sonucu meydana gelen bozulmaların hem bant dışı radyasyon hem de bit hata oranı miktarlarında ciddi artışlara neden olduğu görülmüştür. Diğer taraftan IBO ve p parametreleri ile söz konusu artışların kontrol edilebileceği ortaya konmuştur.