bluuebunny/crossref_metadata_2025 huggingface dataset:
Formulasi Strategi Pengembangan Usaha Depot Bakso Kabul
Authors: Candra Robert
Published: August 2023

Pertumbuhan Usaha Mikro, Kecil, dan Menengah (UMKM) di Indonesia mengalami peningkatan signifikan, terutama dalam sektor industri makanan. Meskipun banyak UMKM yang muncul, hanya sedikit yang mampu bertahan dalam jangka panjang karena adanya berbagai kendala dan persaingan yang mereka hadapi. Dalam konteks ini, penelitian dilakukan pada Depot Bakso Kabul, sebuah UMKM di sektor industri makanan, dengan tujuan untuk menganalisis lingkungan internal dan eksternal yang memengaruhi Depot Bakso Kabul. Penelitian ini juga bertujuan untuk merumuskan strategi pengembangan alternatif bagi Depot Bakso Kabul. Metode penelitian yang digunakan dalam penelitian ini adalah kualitatif deskriptif, dengan mengumpulkan data melalui wawancara semi terstruktur kepada informan yang dipilih menggunakan teknik snowball sampling. Validitas data diuji melalui teknik triangulasi sumber. Hasil analisis lingkungan internal dan eksternal usaha kemudian dianalisis menggunakan analisis SWOT. Dari hasil analisis tersebut, strategi pengembangan pasar diidentifikasi sebagai strategi yang efektif bagi pengembangan Depot Bakso Kabul. Strategi ini dapat diimplementasikan melalui kebijakan-kebijakan seperti membuka cabang baru atau menawarkan waralaba, menetapkan standar operasional perusahaan, dan memperkuat fungsi-fungsi internal bisnis.
Fecal microbiota transplantation alleviates experimental colitis through the Toll-like receptor 4 signaling pathway
Authors: Wen Xin , Xie Rui , Wang Hong-Gang , Zhang Min-Na , He Le , Zhang Meng-Hui , Yang Xiao-Zhong
Published: August 2023

Many studies point to an association between Helicobacter pylori (H. pylori ) infection and inflammatory bowel diseases (IBD). Although controversial, this association indicates that the presence of the bacterium somehow affects the course of IBD. It appears that H. pylori infection influences IBD through changes in the diversity of the gut microbiota, and hence in local chemical characteristics, and alteration in the pattern of gut immune response. The gut immune response appears to be modulated by H. pylori infection towards a less aggressive inflammatory response and the establishment of a targeted response to tissue repair. Therefore, a T helper 2 (Th2)/macrophage M2 response is stimulated, while the Th1/macrophage M1 response is suppressed. The immunomodulation appears to be associated with intrinsic factors of the bacteria, such as virulence factors - such oncogenic protein cytotoxin-associated antigen A, proteins such H. pylori neutrophil-activating protein, but also with microenvironmental changes that favor permanence of H. pylori in the stomach. These changes include the increase of gastric mucosal pH by urease activity, and suppression of the stomach immune response promoted by evasion mechanisms of the bacterium. Furthermore, there is a causal relationship between H. pylori infection and components of the innate immunity such as the NLR family pyrin domain containing 3 inflammasome that directs IBD toward a better prognosis.
Impact of Chaos Theory on the Application of Innovation: An Analytical Research for The Opinions of a Sample of the Leaders of National Security Advisory
Authors: Kzar Alaa Abdulhussein , Mohammed Dr. Alyaa Jassim
Published: August 2023

The purpose of current research to investigate the influence of chaos theory on application of innovation, as it is the top of the pyramid in the security strategic decision-making, as the place of application was the National Security Advisory being within the structure of the security system of the Iraqi government, as the importance of the research stemmed from building a theoretical framework for the theory of chaos, And an intellectual contribution that’s made at field of strategic management practices, in order to bridging of perception and awareness gaps from the perspective of culture, leadership capabilities, and wisdom in disposing of resources and according to priorities when achieving the set goals, as well as the method of applying innovative ideas concerned with developing creative directions and in a proactive manner, and on this basis the research problem was formulated With a main question (Was the National Security Adviser able to employ chaos theory in applying innovation to develop creativity?), so that the research adopts the descriptive, exploratory approach, so the research community was (144), while the research sample was (133) from the leaders of the National Security Adviser (Deputy National Security Adviser And general managers, assistant general managers, consultants, department managers, division managers), to distribute to them (the questionnaire), which was designed based on a number of reliable international standards for its variables, to analyze its data by adopting the two statistical packages (SPSS V.28 & AMOS V. 25), to conclude Analyzing its data to identify the practices of the National Security Adviser in improving investment opportunities for application of innovation to reach the development of adoptions of organizational creativity, with the adoption of the dimensions of the strange attractor / the butterfly effect, the point of bifurcation, feedback, and self-organization, as dimensions of chaos theory. To improve innovation application practices.
Queuing System and Performance of Automated Teller Machine of Access Bank Plc, Uyo
Authors: Usendok Isidore Godwin , Akpan Anietie , Ajibade Felicia Olufunmilayo , Nkutt Nsikan Michael
Published: August 2023

The focus of this study had been on Queuing System and Performance of Automated Teller Machine of Access Bank Plc, Uyo. The work was necessitated based on the cashless policy and the increasing waiting lines experienced by the various stakeholders in the Automated Teller Machine. The aim of the study was to determine the effect of customer arrival, service discipline and service mechanism has on the performance of Automated Teller Machine of Access bank in Uyo. Relevant literatures were reviewed and the methodology adopted was survey research design, a population of 1,326 which emanated from the service rate of a five- day study was used for the study, the data was analyzed using tables. The data were obtained through observation method. Both descriptive and inferential statistics were used to analyze collated data. These include: frequency, percentage, mean, rank, Pearson product Moment Correlation and Linear multiple regression. The finding of the study revealed that customer arrival have a significant positive impact on the financial performance of Access Bank in Uyo. The study further reveal that service discipline indeed enhances the market performance of Access in Uyo. The study also indicate that service mechanism have a significant positive impact on the shareholder return of Access Bank, Uyo. The study concluded that customer arrival, service discipline and service mechanism are the three major components of Queue System that have positive significant impacts on the performance of Automated Teller Machine ATM of Access Bank in Uyo. Based on the findings, it was recommended that ATM queuing system offer valuable insights for the banking sector, suggesting strategies for improving financial performance, market performance, and shareholder returns.
Moderating Effect of Income on the Relationship between Social Media Advertisement and Consumer Buying Behavior: A Pilot Study
Authors: Baffa Bashir Mahmood , Maiyaki Ahmed Audu , Baffa Asma’u Mahmood
Published: August 2023

The use of social media platforms for advertising has grown exponentially in recent years, providing businesses with an effective tool to reach and engage with consumers. However, the effectiveness of social media advertisements and their impact on consumer buying behavior may vary depending on individuals’ income levels. Understanding the moderating effect of income on the relationship between social media advertisement and consumer behavior is crucial for marketers to develop targeted and effective advertising strategies. The paper explored a small sample data on the moderating effect of income on the relationship between social media advertisement and consumer buying behavior in the Federal University Dutse. Instrument’s validity, reliability and subsequently the data normality were examined through panel of experts and also by analyzing small sample data with the aid of SPSS version 22 software. Results showed that the instrument is reliable and the data for preliminary study exhibit reasonable normality. The research explored and validated the instrument of the various constructs of social media advertisement¬ – informativeness, entertainment, credibility and interactivity.
Analysis of Capital Values of Duplex Residential Properties in Benin Property Market Segments
Authors: Sado Raphael Oshiobugie , Nwafor Ifeanyichukwu Valentine , Johnnie Inipami Prince
Published: August 2023

Duplexes are types of residential properties built and designed on two floors to accommodate a single family unit and these have become a trending form of residential accommodation in recent times. An investor would be interested in observing the trend of capital value of such investment to be able to appreciate his venture. The aim of this study is to analyze the capital value of duplex residential properties in Benin property market, having the objectives of determining the trend and significance of variation of capital values in the identified market segments of Benin City. The survey research design was used as the research methodology. Estate surveying and valuation firms active in property management in Benin provided responses through questionnaires, interviews and observed documented records. Tables, graphs, trend analysis, and one-way ANOVA were used to examine the data collected. The study revealed that the trend of capital values of Duplexes has been steadily increasing over time, and indicated significant variation in the respective property market segments except in Siluko. As a result, it was concluded that the trends and variations could be attributed to the level of accessibility of the property, cost of building materials, trends in the property market, cost of land, and other factors, and that prospective investors should consider these factors before investing in Duplex residential property in Benin City in order to hedge over loss or depreciation of capital value of investment.
Investigating the Communities of Inquiry in Blended Learning Environments
Authors: Maria-Eleni Bourogianni
Published: August 2023

The purpose of this paper is to investigate how the Community of Inquiry supports deep approaches to learning and especially within blended learning contexts. The research was conducted through quantitative methods. For the inquiry a questionnaire was delivered to participants in electronic form. All the participants were students from three universities in Belgium (Flanders and Capital Region) – only the departments that used blended learning within their teaching strategies. The survey was conducted from November 2014 until June 2015. The results of the inquiry agree with international studies that within blended environment, Cognitive Presence is highly related with deep learning (Akyol & Garrison, 2011; Akyol, Garrison, & Ozden, 2009; Garrison & Cleveland- Innes, 2005). Though, further research should be conducted, focusing on linking quantitative comparatives of the development of education and learning approaches.
Consideraciones Teóricas-Metodológicas de la Relación Ejecutivo-Legislativo en un Contexto de Gobierno Dividido.
Authors: Juárez Armenta Martín Alonso
Published: August 2023

El presente trabajo tiene como objetivo presentar una exploración teórico-metodológica sobre la relación ejecutivo-legislativo en un contexto de gobierno dividido. A través de una un ejercicio de revisión documental se muestran interrogantes, hipótesis y metodologías empleadas por diversos trabajos, los cuales exponen los retos a los que se enfrentan los poderes del Estado cuando no están de acuerdo, así como los efectos que esto genera. Entre los principales hallazgos se considera que el control partidista del poder ejecutivo y legislativo no garantiza un buen gobierno, pero la división del control del partido lo impide. Asimismo, siempre que el partido que ostenta la mayoría en el congreso conserve un conflicto permanente con el partido que ocupa el ejecutivo tendrá efectos negativos en la aprobación de menos puntos en la agenda, se generara estancamientos y no se podrán llevar a cabo políticas que sean benéficas para la población.
Influencia de las propiedades fisicoquímicas del vino de mora, determinadas mediante análisis sensorial
Authors: Balarezo Carolina Beltrán , Carchi Tandazo Tanya Alexandra , Yánez Romero María Elena , Mercedes Lam Adriana , Flores Acosta Alex Rodrigo
Published: August 2023

El objetivo principal de este estudio fue evaluar las propiedades sensoriales del vino de mora mediante el análisis de características fisicoquímicas de la materia prima y del producto terminado. Se evaluaron dos tipos de vino utilizando diferentes proporciones de mora y agua, así como la adición de roble francés tostado. Se realizaron pruebas de preferencia pareada y perfil descriptivo con la participación de catadores y se compararon los resultados con una marca comercial. Los resultados mostraron que el vino elaborado tenía un mayor grado de dulzor y un sabor amargo más pronunciado en comparación con el vino comercial, atribuyendo estas propiedades a la presencia de ácidos, la concentración de etanol y compuestos volátiles. Hubo diferencias significativas (p>0.05) entre las dos formulaciones evaluadas, la formulación con 70% de mora, 30% agua y 50 mg/L de azúcar mostró las mejores características y mayor aceptación por parte de los consumidores. El estudio destacó la importancia de la concentración de fruta, agua y edulcorante, así como la influencia del roble francés tostado en la elaboración del vino de mora. Los resultados obtenidos son útiles para optimizar la producción de este tipo de vino con características sensoriales deseables y mejor aceptación por parte del consumidor.
The Circumgalactic Medium of Extreme Emission Line Galaxies at z∼2: Resolved Spectroscopy and Radiative Transfer Modeling of Spatially Extended Lyα Emission in the KBSS-KCWI Survey*
Authors: Erb Dawn K. , Li 李智 Zhihui 慧 , Steidel Charles C. , Chen 陈昱 Yuguang 光 , Gronke Max , Strom Allison L. , Trainor Ryan F. , Rudie Gwen C.
Published: August 2023

The resonantly scattered Lyα line illuminates the extended halos of neutral hydrogen in the circumgalactic medium of galaxies. We present integral field Keck Cosmic Web Imager observations of double-peaked, spatially extended Lyα emission in 12 relatively low-mass (M
⋆ ∼ 109 M⊙) z ∼ 2 galaxies characterized by extreme nebular emission lines. Using individual spaxels and small bins as well as radially binned profiles of larger regions, we find that for most objects in the sample the Lyα blue-to-red peak ratio increases, the peak separation decreases, and the fraction of flux emerging at line center increases with radius. We use new radiative transfer simulations to model each galaxy with a clumpy, multiphase outflow with radially varying outflow velocity, and self-consistently apply the same velocity model to the low-ionization interstellar absorption lines. These models reproduce the trends of peak ratio, peak separation, and trough depth with radius, and broadly reconcile outflow velocities inferred from Lyα and absorption lines. The galaxies in our sample are well-described by a model in which neutral, outflowing clumps are embedded in a hotter, more highly ionized inter-clump medium (ICM), whose residual neutral content produces absorption at the systemic redshift. The peak ratio, peak separation, and trough flux fraction are primarily governed by the line-of-sight component of the outflow velocity, the H i column density, and the residual neutral density in the ICM respectively. The azimuthal asymmetries in the line profile further suggest nonradial gas motions at large radii and variations in the H i column density in the outer halos.
A Bright First Day for Tidal Disruption Events
Authors: Huang 黄 Xiaoshan 小珊 , Davis Shane W. , Jiang 姜 Yan-fei 燕飞
Published: August 2023

Stream–stream collision may be an important prepeak energy dissipation mechanism in tidal disruption events (TDEs). We perform local three-dimensional radiation hydrodynamic simulations in a wedge geometry including the gravity to study stream self-crossing with an emphasis on resolving the collision and following the subsequent outflow. We find that the collision can contribute to prepeak optical emissions by converting ≳5% of the stream kinetic energy to radiation, yielding prompt emission of ∼1042−44 erg s−1. The radiative efficiency is sensitive to stream mass fallback rates and strongly depends on the downstream gas optical depth. Even for a sub-Eddington (10%) mass fallback rate, the strong radiation pressure produced in the collision can form a local super-Eddington region near the collision site, where a fast, aspherical outflow is launched. A higher mass fallback rate usually leads to more optically thick outflow and lower net radiative efficiency. For

M

̇

≳
0.1

M

̇

Edd

, the estimated photosphere size of the outflow can expand by 1–2 orders of magnitude, reaching ∼1014 cm. The average gas temperature at this photospheric surface is a few × 104 K, roughly consistent with inferred prepeak photosphere properties for some optical TDEs. We find that the dynamics is sensitive to the collision angle and radius, but the radiative efficiency or outflow properties show more complex dependency than is often assumed in ballistic models.
Turbulent Diffusion of the Particles within Pulsar Wind Nebulae
Authors: Lu Fang-Wu , Zhu Bo-Tao , Hu Wen , Zhang Li
Published: August 2023

A turbulent diffusion model is presented to account for the energy and spatial diffusion of the particles within pulsar wind nebulae (PWNe), with the assumption that the energy injected from the pulsar into the nebula is split between the turbulence waves and electrons/positrons. In the model, the mutual interactions between the turbulence waves and particles are taken into account, representing the damping effect of the turbulence waves and the stochastic acceleration and spatial diffusion of the particles, respectively. The evolutions of the turbulence waves and particles are described with the coupled kinetic equations, in which the Kolmogorov- and Kraichnan-type turbulence are, respectively, considered. The model is applied to the Crab Nebula and shows that the spectral energy distribution of the PWN can be naturally explained. Our modeling results indicate that, for the Crab Nebula, the stochastic acceleration and spatial diffusion processes play a role in modifying the electron spectrum at the low energies of E
e ≲ 1 TeV. The damping process seems more effective for modulating the turbulent spectrum in the Kraichnan-type turbulence, resulting in the nonlinear variations of the current energy and spatial diffusion coefficients with energy generated in the wave–particle systems. In the Kolmogorov-type turbulence, the diffusion coefficients are more consistent with the quasi-linear distributions, due to the energy cascade dominating over the damping effect.
Obtaining the Strength of the Magnetic Field from E- and B-Modes of Dust Polarization
Authors: Cho Jungyeon
Published: August 2023

We perform numerical simulations of supersonic magnetohydrodynamic (MHD) turbulence and calculate Fourier power spectra of E- and B-modes arising from dust polarization. We pay close attention to the ratio of E-mode to B-mode spectra (a.k.a. E/B power asymmetry) on small spatial scales. We find that the ratio depends on the strength of the mean magnetic field: the stronger the mean magnetic field, the smaller the ratio. More precisely speaking, the ratio scales with the Alfvén Mach number M

A
, the rms velocity divided by the Alfvén speed of the mean magnetic field, when it lies in the range 1 ≲ M

A
≲ 30. This result implies that we can use the E/B power asymmetry to constrain the strength of the mean magnetic field in supersonic and super-Alfvénic MHD turbulence.
Study of Jupiter’s Interior with Quadratic Monte Carlo Simulations
Authors: Militzer Burkhard
Published: August 2023

We construct models for Jupiter’s interior that match the gravity data obtained by the Juno and Galileo spacecraft. To generate ensembles of models, we introduce a novel quadratic Monte Carlo technique, which is more efficient in confining fitness landscapes than the affine invariant method that relies on linear stretch moves. We compare how long it takes the ensembles of walkers in both methods to travel to the most relevant parameter region. Once there, we compare the autocorrelation time and error bars of the two methods. For a ring potential and the 2d Rosenbrock function, we find that our quadratic Monte Carlo technique is significantly more efficient. Furthermore, we modified the walk moves by adding a scaling factor. We provide the source code and examples so that this method can be applied elsewhere. Here we employ our method to generate five-layer models for Jupiter’s interior that include winds and a prominent dilute core, which allows us to match the planet’s even and odd gravity harmonics. We compare predictions from the different model ensembles and analyze how much an increase in the temperature at 1 bar and ad hoc change to the equation of state affect the inferred amount of heavy elements in the atmosphere and in the planet overall.
The Accretion Mode in Sub-Eddington Supermassive Black Holes: Getting into the Central Parsecs of Andromeda
Authors: Alig C. , Prieto A. , Blaña M. , Frischman M. , Metzl C. , Burkert A. , Zier O. , Streblyanska A.
Published: August 2023

The inner kiloparsec regions surrounding sub-Eddington (luminosity less than 10−3 in Eddington units, L
Edd) supermassive black holes (BHs) often show a characteristic network of dust filaments that terminate in a nuclear spiral in the central parsecs. Here we study the role and fate of these filaments in one of the least accreting BHs known, M31 (10−7
L
Edd) using hydrodynamical simulations. The evolution of a streamer of gas particles moving under the barred potential of M31 is followed from kiloparsec distance to the central parsecs. After an exploratory study of initial conditions, a compelling fit to the observed dust/ionized gas morphologies and line-of-sight velocities in the inner hundreds of parsecs is produced. After several million years of streamer evolution, during which friction, thermal dissipation, and self-collisions have taken place, the gas settles into a disk tens of parsecs wide. This is fed by numerous filaments that arise from an outer circumnuclear ring and spiral toward the center. The final configuration is tightly constrained by a critical input mass in the streamer of several 103
M
☉ (at an injection rate of 10−4

M

⊙

yr

−
1

); values above or below this lead to filament fragmentation or dispersion respectively, which are not observed. The creation of a hot gas atmosphere in the region of ∼106 K is key to the development of a nuclear spiral during the simulation. The final inflow rate at 1 pc from the center is ∼1.7 × 10−7
M
☉ yr−1, consistent with the quiescent state of the M31 BH.
Serum Concentrations of Thelper2-derived Cytokines in Stevens-Johnson Syndrome and Toxic Epidermal Necrolysis
Authors: Tran Thi Huyen , Vinh Nguyen Thi Ha
Published: August 2023

BACKGROUND: Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) are severe cutaneous adverse drug reactions. Some immunological and genetic factors are believed to be involved in the pathogenesis of SJS/TEN, including T helper 1 and T helper 2 (Th2)-derived cytokines.
AIM: This study aims to evaluate the serum levels of Th2-derived cytokines in SJS/TEN, compare to those of erythema multiforme (EM) patients, and the relation between them and the progress of SJS/TEN.
METHODS: This was a  sectional descriptive study conducted at  the  National Hospital of  Dermatology and Venereology, in Hanoi, Vietnam, from October 2017 to September 2019. 48 SJS/TEN patients, 43 EM patients, and 20 healthy controls (HCs) participated. Serum interleukin (IL)-4, IL-5, and IL-13 levels were measured by using the fluorescence covalent microbead immunosorbent assay (FCMIA) (ProcartaPlex Immunoassay Panels kit, Thermo Fisher Scientific, USA). The Mann-Whitney U test was used to compare the serum IL levels of the two groups. The Wilcoxon tests were used to compare quantitative variables before and after the treatment. Differences were considered to be statistically significant at p < 0.05.
RESULTS: 19 SJS patients (39.5%) and 29 TEN patients (60.5%) participated in our study. The mean age was 49.3, range of 19–77 years (47.9% males; 52.1% females). The most common causative drugs were traditional medicine (29.1%), and allopurinol (12.5%). On the day of hospitalization, the serum level of IL-4 in the SJS/TEN group was 3 ± 7.5 pg/mL, statistically significantly higher than that in the HCs group (p < 0.05), but not higher than that in the EM group (p > 0.05); serum levels of IL-5 and IL-13 in the SJS/TEN group were 4.5 ± 9.8 pg/mL and 1.6 ± 0.6 pg/mL, respectively, similar to those in the EM and HCs groups. On the day of re-epithelialization, in SJS/TEN patients, the serum level of IL-5 was 1 ± 2.8 pg/ml, statistically significantly lower than that on the day of hospitalization (3 ± 7.5 pg/mL) with p < 0.05. Regarding serum levels of IL-4 and IL-13, there was no difference between the two- time points.
CONCLUSION: The serum concentrations of Th2-derived cytokines (IL-4, IL-5, and IL-13) were not higher in the SJS/TEN group than in the EM group and there was no significant change in the clinical progression of SJS/TEN, except the serum level of IL-5.
A new species of groundsnake genus Atractus Wagler, 1828 (Serpentes, Dipsadidae) from the Peruvian Andes revealed by unequivocal morphological characters
Authors: Melo-Sampaio Paulo R. , Venegas Pablo J.
Published: August 2023

Based on an exhaustive revision of external morphological characters we describe a new species ofAtractusfrom the humid montane forest of the Andes of northern Peru, Cajamarca department, occurring at elevations of 1641 to 2161 m. This new species was misidentified asA. gigasin the literature and for more than a decade represented the southernmost record of the that species. In the absence of molecular data and limited by a small sample, we use some underreported characters in the genusAtractussuch as the presence of apical pits. Thus, the combination of apical pits as well as other characters mentioned in the literature (i.e., head scutellation and number of subcaudals) distinguishes the Peruvian population fromA. gigas, and strongly supports the morphological separation of this taxon from the rest of its congeners.
Digital transformation strategies for applied science domains
Authors: Bentum Samuel , Wild David
Published: August 2023

The key hallmark of a digitally minded organisation today is seen in their rapid advancement, globalisation, innovation and resilience to change. Companies that wish to thrive must be prepared to adapt to the new digital reality. Being digitally minded does not mean implementing new technology, investing in tools and upgrading current systems. These stages are critical, but they are not the entire picture. If a company wants to remain competitive, it must not just be able to adapt to changes, but also anticipate and drive innovation. Companies must plan ahead and be proactive architects of their future in order to achieve this vision. This is where a digital transformation strategy is crucial. A digital transformation strategy assists organisational leadership in addressing challenges about their business, such as the present level of digitisation and a digital maturity roadmap. Although diverse data capturing technologies and data-generating assets exist, material/chemical science domains, such as R&D and Manufacturing groups, struggle to harness the full power of their data. A typical industry will have significant data sources generating large amounts of data stored in siloed databases with minimal to non-existent cross-talk. This in part creates scenarios for researchers to be able to perform a deep dive in one set of data, but unable to co-populate and harness the interdependences or relationships amongst the different datasets. This paper seeks to define, distinguish, aggregate and propose an integrative approach to utilising the various types of disparate data sources commonly encountered by researchers in the field of their material science research. The main focus here is defining strategies to harness insights across integrative data to aid in efficient research in R&D organisations as these industries seek to embrace the power of digital transformation. Although the principles described here relate to industries in the applied science domain, the general strategies proposed can be applied to other industries on a case-by-case basis.
Conflicting behavior between powdering and flaking resistance under skin pass mill process in galvannealed interstitial free steel
Authors: Park Hyungkwon , Jeong Young-Joong , Lee Jin-Jong , Lee Chang-Hoon , Goo Bong Joo , Kim Yonghee
Published: August 2023

The failure of galvannealed (GA) coatings during press forming is an important issue for steel companies, because it results in a deteriorated product quality and reduced productivity. Powdering and flaking are thought to be the main failure modes in GA steel. However, these two modes currently lack a clear distinction, despite their different failure types. Therefore, in this study, we demonstrate that the different behaviors of these two failure modes are generated by the skin pass mill (SPM) condition and we discuss the underlying mechanism in detail using microstructural and simulation analyses. With the increase in steel elongation from 0% to 4.0% under milling force from 0 to 6 ton, a high compressive stress is produced up to −380 MPa on the surface of the steel sheet and the interface is correspondingly flattened from 0.96 to 0.53 μm in Ra. This flattening weakens the mechanical interlocking effect for adhesive bonding, deteriorating the flaking resistance from 41.1 to 65.2 hat-bead contrast index (hci). In addition, the GA coating layer becomes uniformly densified via the filling of pores under compressive stress in the layer. Furthermore, the ζ phase exhibits significant plastic deformation, leading to a uniform coverage of the coating surface; this helps to suppress crack propagation. Accordingly, the powdering resistance gradually improves from 4.2 to 3.5 mm. Consequently, with the increase in SPM-realized steel sheet elongation, the powdering resistance improves whilst the flaking resistance deteriorates. Significantly for the literature, this implies that the two failure modes occur via different mechanisms and it indicates the possibility of controlling the two coating failure modes via the SPM conditions.
Quantum codes from $ \sigma $-dual-containing constacyclic codes over $ \mathfrak{R}_{l, k} $
Authors: Zheng Xiying , Kong Bo , Yu Yao
Published: August 2023

Let $ \mathfrak{R}_{l, k} = {\mathbb F}_{p^m}[u_1, u_2, \cdots, u_k]/ \langle u_{i}^{l} = u_{i}, u_iu_j = u_ju_i = 0 \rangle $, where $ p $ is a prime, $ l $ is a positive integer, $ (l-1)\mid(p-1) $ and $ 1\leq i, j\leq k $. First, we define a Gray map $ \phi_{l, k} $ from $ \mathfrak{R}_{l, k}^n $ to $ {\mathbb F}_{p^m}^{((l-1)k+1)n} $, and study its Gray image. Further, we study the algebraic structure of $ \sigma $-self-orthogonal and $ \sigma $-dual-containing constacyclic codes over $ \mathfrak{R}_{l, k} $, and give the necessary and sufficient conditions for $ \lambda $-constacyclic codes over $ \mathfrak{R}_{l, k} $ to satisfy $ \sigma $-self-orthogonal and $ \sigma $-dual-containing. Finally, we construct quantum codes from $ \sigma $-dual-containing constacyclic codes over $ \mathfrak{R}_{l, k} $ using the CSS construction or Hermitian construction and compare new codes our obtained better than the existing codes in some recent references.
The effect of screening on the health burden of chlamydia: An evaluation of compartmental models based on person-days of infection
Authors: Farrell Jack , Spolyar Owen , Greenhalgh Scott
Published: August 2023

Sexually transmitted diseases (STDs) are detrimental to the health and economic well-being of society. Consequently, predicting outbreaks and identifying effective disease interventions through epidemiological tools, such as compartmental models, is of the utmost importance. Unfortunately, the ordinary differential equation compartmental models attributed to the work of Kermack and McKendrick require a duration of infection that follows the exponential or Erlang distribution, despite the biological invalidity of such assumptions. As these assumptions negatively impact the quality of predictions, alternative approaches are required that capture how the variability in the duration of infection affects the trajectory of disease and the evaluation of disease interventions. So, we apply a new family of ordinary differential equation compartmental models based on the quantity person-days of infection to predict the trajectory of disease. Importantly, this new family of models features non-exponential and non-Erlang duration of infection distributions without requiring more complex integral and integrodifferential equation compartmental model formulations. As proof of concept, we calibrate our model to recent trends of chlamydia incidence in the U.S. and utilize a novel duration of infection distribution that features periodic hazard rates. We then evaluate how increasing STD screening rates alter predictions of incidence and disability adjusted life-years over a five-year horizon. Our findings illustrate that our family of compartmental models provides a better fit to chlamydia incidence trends than traditional compartmental models, based on Akaike information criterion. They also show new asymptomatic and symptomatic infections of chlamydia peak over drastically different time frames and that increasing the annual STD screening rates from 35% to 40%-70% would annually avert 6.1-40.3 incidence while saving 1.68-11.14 disability adjusted life-years per 1000 people. This suggests increasing the STD screening rate in the U.S. would greatly aid in ongoing public health efforts to curtail the rising trends in preventable STDs.
Aerial images object detection method based on cross-scale multi-feature fusion
Authors: Pan Yang , Yang Jinhua , Zhu Lei , Yao Lina , Zhang Bo
Published: August 2023

Aerial image target detection technology has essential application value in navigation security, traffic control and environmental monitoring. Compared with natural scene images, the background of aerial images is more complex, and there are more small targets, which puts higher requirements on the detection accuracy and real-time performance of the algorithm. To further improve the detection accuracy of lightweight networks for small targets in aerial images, we propose a cross-scale multi-feature fusion target detection method (CMF-YOLOv5s) for aerial images. Based on the original YOLOv5s, a bidirectional cross-scale feature fusion sub-network (BsNet) is constructed, using a newly designed multi-scale fusion module (MFF) and cross-scale feature fusion strategy to enhance the algorithm's ability, that fuses multi-scale feature information and reduces the loss of small target feature information. To improve the problem of the high leakage detection rate of small targets in aerial images, we constructed a multi-scale detection head containing four outputs to improve the network's ability to perceive small targets. To enhance the network's recognition rate of small target samples, we improve the K-means algorithm by introducing a genetic algorithm to optimize the prediction frame size to generate anchor boxes more suitable for aerial images. The experimental results show that on the aerial image small target dataset VisDrone-2019, the proposed method can detect more small targets in aerial images with complex backgrounds. With a detection speed of 116 FPS, compared with the original algorithm, the detection accuracy metrics mAP0.5 and mAP0.5:0.95 for small targets are improved by 5.5% and 3.6%, respectively. Meanwhile, compared with eight advanced lightweight networks such as YOLOv7-Tiny and PP-PicoDet-s, mAP0.5 improves by more than 3.3%, and mAP0.5:0.95 improves by more than 1.9%.
Development and Testing of Mobile Assisted Language Learning Application to Improve Oral Clinical Case Presentation of Student Nurses
Authors: Cynthia Milton  , Aruna Subramaniam  , S. Sridevi  , S. Ganesh Kumar
Published: August 2023

Background: Nurses’ oral case presentation is a core clinical communication skill with distinctivelinguistic qualities that require specific language training. The present paper is auser feedback analysis of a start-up Mobile Assisted Language Learning application (MALLapp) developed and implemented to provide English language training to improve OralCase Presentation (OCP) of student nurses pursuing baccalaureate degrees from a nursingcollege in South India. Objective: The aim was to develop and test an Android based OCPMALLapplication for user acceptability and effectiveness in improving OCP performanceand decreasing the perceived language difficulty. Methodology: Sixty-two student nursesfrom a reputed nursing college in Chennai, South India, using Android mobile phonesparticipated in the study. All the participants were given access and instructions on theuse of OCP-MALL app. A comparison of pre and post-test of perceived level of languagedifficulty and OCP pre and post score along with users’ acceptance were collected. Results:The users’ acceptability showed that all participants rated the clarity in reading the textwith highest mean score of 8.29 and std of 1.276, simplicity in navigation – moving to nextpage with next highest mean score of 8.19 and std of 1.526, clarity in text application layoutwith a mean score of 8.14 and std of 1.497 and user friendliness of the application witha mean score of 8.13 and std of 1.393. Conclusion: This startup OCP-MALL app user satisfactionfeedback proves that
AnimoSpace LMS Transcending Physical Learning Barriers
Authors: Gonzales Flores Rozanne Tuesday , Ong Ethel C.
Published: August 2023

This chapter employed qualitative and case study approaches to elicit valuable insights from De La Salle University tertiary teachers' use of digital educational technology and AnimoSpace in addressing the challenges posed by online learning environments and the issues of equity and inclusion. Analysis of interviews and AnimoSpace statistical data was conducted through the lens of the task-technology fit perspective outlining the tasks and roles teachers perform in the online environment and the characteristics of AnimoSpace. Findings revealed that similar tasks and roles were performed when teaching and learning were shifted online. AnimoSpace and other digital technology fostered equity and inclusion in the online learning environment. However, additional roles/role changes were uncovered, specifically Technologist, Basic Troubleshooter, Instructional Designer, and Alternative Assessor. In addition, the lack of cost-effective or free proctoring tools compelled teachers to seek alternative forms of assessment to measure learning outcomes.
SLCIM picture quiz
Authors: Mayurathan P.
Published: August 2023

No abstract available
Multisystemic chronic sarcoidosis: unmasking of a true masquerader
Authors: Tasnim R. , Nahar A. , Islam Q. T.
Published: August 2023

Sarcoidosis is a diverse disorder that can potentially affect almost every organ system, and mimics a wide-range of diseases. Here, we present a case of multisystemic chronic sarcoidosis affecting lung parenchyma, intrathoracic and extrathoracic lymph nodes and skin. The organ specific clinical manifestations developed over a course of time that did imitate different diseases at different times. Only after the full-blown disease, symptoms and investigations could be placed altogether as sarcoidosis.
Iron overload leading to cirrhosis in a patient with hereditary spherocytosis and heterozygosity for H63D mutation in the HFE gene
Authors: Madurapperuma M. C. P. , Dulanjalie R . B. A. T. , Thennakoon T. M. H. M. , Gunawardena K. W. , Jayanaga W. W. L. A. , Dissanayake V. H. W.
Published: August 2023

Hereditary spherocytosis (HS) refers to a group of autosomal dominantly inherited heterogeneous hereditary haemolytic anaemias (HHA). Significant iron overload in HS is uncommon. Iron overload has been described as a complication of HS when there is co-inheritance of hereditary haemochromatosis (HH). H63D mutation accounts for a minority of hereditary hemochromatosis cases and does not cause iron overload in an otherwise healthy heterozygous carrier state. We present a 64-year-old man , diagnosed with HS presenting with cirrhosis without significant on-going haemolysis. He had a markedly high serum ferritin and transferrin saturation. Magnetic Resonance Imaging for liver iron concentration revealed haemochromatosis of the liver. HFE genotyping showed heterozygosity for the H63D mutant allele. Haemolysis in HS does not usually result in clinically significant iron excess leading to haemochromatosis and the presence of H63D heterozygous mutation will increase the risk of clinically significant iron overload which can lead to hepatic iron deposition and fibrosis. Therefore, if a patient with H63D mutation demonstrates clinically significant iron overload, clinicians should search for other factors that increase iron excess such as on-going haemolysis, alcohol abuse and presence of metabolic syndrome.
Delayed pulmonary embolism occurring six months after a mild COVID infection: A case report
Authors: Soysa W. L. M. , Sivagnanam F. G.
Published: August 2023

Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) is a globally impactful disease. Venous Thromboembolism (VTE), particularly pulmonary embolism is common in the acute stages. Occurrence after initial recovery remains rare. We report a 43-year-old man who was admitted following acute onset shortness of breath six months after mild SARS-CoV-2 infection. Computed Tomography Pulmonary Angiogram revealed a bilateral pulmonary embolism. No other risk factors for VTE were identified. This case report raises concern over a persistent pro-coagulopathy state caused by the SARS-Cov-2 virus even after recovering from the initial infection.
The RNA-Splicing Ligase RTCB Promotes Influenza A Virus Replication by Suppressing Innate Immunity via Interaction with RNA Helicase DDX1
Authors: Cao Lei , Hui Xianfeng , Xu Ting , Mao Haiying , Lin Xian , Huang Kun , Zhao Lianzhong , Jin Meilin
Published: August 2023

The RNA-splicing ligase RNA 2′,3′-cyclic phosphate and 5′-OH ligase (RTCB) is a catalytic subunit of the tRNA-splicing ligase complex, which plays an essential role in catalyzing tRNA splicing and modulating the unfolded protein response. However, the function of RTCB in influenza A virus (IAV) replication has not yet been described. In this study, RTCB was revealed to be an IAV-suppressed host factor that was significantly downregulated during influenza virus infection in several transformed cell lines, as well as in primary human type II alveolar epithelial cells, and its knockout impaired the propagation of the IAV. Mechanistically, RTCB depletion led to a robust elevation in the levels of type I and type III IFNs and proinflammatory cytokines in response to IAV infection, which was confirmed by RTCB overexpression studies. Lastly, RTCB was found to compete with DDX21 for RNA helicase DDX1 binding, attenuating the DDX21-DDX1 association and thus suppressing the expression of IFN and downstream IFN-stimulated genes. Our study indicates that RTCB plays a critical role in facilitating IAV replication and reveals that the RTCB-DDX1 binding interaction is an important innate immunomodulator for the host to counteract viral infection.
Fingertip ischemia following intralesional injection of Candida albicans antigen for treatment of a subungual wart
Authors: Evans Brogan G.A. , Newman-Plotnick Harry , Prsic Adnan
Published: August 2023

Subungual or periungual cutaneous warts are caused by the Human Papillomavirus (HPV). These lesions can be refractory to destructive therapy, necessitating the use of intralesional immunotherapies such as Candida albicans antigen. In this case report, we present a 23-year-old female who sustained distal fingertip soft tissue necrosis following intralesional injection of Candida albicans antigen for treatment of a refractory subungual wart. While this patient recovered appropriately with conservative bedside debridement and local wound care, intralesional injections to the digit, or hand are not without sequela. Care must be taken to inject intradermal and avoid the underlying digital vasculature. In this case, the radial digital vessels were traumatized upon injection, leading to digital ischemia and soft tissue necrosis. While isolated soft tissue ischemia without compromised perfusion can be treated conservatively, these injuries should be evaluated by a hand surgeon to determine the need for emergent revascularization, or future soft tissue reconstruction.
Acrodermatitis dysmetabolica secondary to isoleucine deficiency in infant with maple syrup urine disease
Authors: Alkhayal Fares A. , Al Haddad Sukina , Bakraa Reem Medhat , Alqahtani Abdulmalik
Published: August 2023

Acrodermatitis dysmetabolica (AD) describes eruptions characterized by the clinical triad of acral dermatitis, diarrhea, and alopecia. AD can be caused by various metabolic disorders one of which is maple syrup urine disease (MSUD). We present a 2-month-old boy diagnosed with MSUD by the age of 5 days and treated with branched-chain amino acid (BCAA) restricted diet, BCAAs formula, and thiamine supplementation. He was referred to dermatology with a 3-week history of diarrhea, progressive acrodermatitis enteropathica like cutaneous eruption and hair loss over the scalp treated with topical mometasone ointment, isoleucine supplementation and leucine restriction. Complete resolution of skin eruption was achieved by 4 weeks, which correlates with normalization of BCAA levels based on close monitoring of biochemical lab values and growth. This case emphasizes the dangers of limiting BCAA intake when treating MSUD, as well as the importance of close monitoring during the amino acid depleting period of growth.
Bullous striae distensae in a young patient with cardiomyopathy
Authors: Alowairdhi Yazeed , Alowirdi Fatimah , Alessa Dana
Published: August 2023

Striae distensae (SD), also known as stretch marks, are observable linear scars that appear where dermal damage has occurred as a result of prolonged stretching of the skin. The actual pathophysiology of SD is still up for debate because its origins are multifaceted. Generally, striae are benign lesions, but larger lesions may get traumatized and become ulcerated or rupture. In patients with edema and receiving systemic steroids, bullous SD could develop secondary to fluid buildup preferentially in striae. We report a case of a young patient with cardiomyopathy who received systemic steroids and developed bullous striae distensae.