bluuebunny/crossref_metadata_2025 huggingface dataset:
Some New Identities for the Rogers-Ramanujan Continued Fraction and Functions
Authors: Baruah Nayandeep Deka , Talukdar Pranjal
Published: April 2023

We prove some new modular identities for the Rogers\textendash Ramanujan continued fraction. For example, if $R(q)$ denotes the Rogers\textendash Ramanujan continued fraction, then $$R(q)R(q^4)&=\dfrac{R(q^5)+R(q^{20})-R(q^5)R(q^{20})}{1+R(q^{5})+R(q^{20})}\\\intertext{and}\dfrac{1}{R(q^{2})R(q^{3})}&+R(q^{2})R(q^{3})= 1+\dfrac{R(q)}{R(q^{6})}+\dfrac{R(q^{6})}{R(q)}.$$ In the process, we also find two new relations for the Rogers-Ramanujan functions.
MSC Classification: 11F27 , 11P84 , 11A55 , 33D90
"Unexpected gallbladder cancer" -- was it really an accident?
Authors: Sun Yuxin , Xiang Shuai , Cheng Haihong , Li Xiaoxuan , Zhou Di , Ma Fei
Published: April 2023

Background
Gallbladder cancer (GBC) is a rare malignant disease. Unexpected gallbladder cancer (uGBC) is a kind of gallbladder cancer diagnosed in a special way that was previously thought to have a good prognosis that is now controversial. The proportion of uGBC, even the terminal stage in GBC, has increased dramatically, but this phenomenon has not received enough attention.
Methods
Data from all patients with GBC who underwent surgery at the Department of General Surgery of Xinhua hospital between January 1, 2018, and June 30, 2021, were collected. Demographics and clinical and pathological data of patients were analyzed. Prognosis was calculated by the Kaplan–Meier method. A Cox proportional hazards model was used to determine the effect on uGBC of common factors such as age and sex.
Results
Multivariate Cox regression analysis indicated that American Joint Committee on Cancer (AJCC) stage, CA125 level, and CA199 level were significantly correlated with worse overall survival (OS) (HR = 5.486, 95% CI: 1.165-25.824, P = 0.031, HR = 1.005, 95% CI: 1.001-1.010, P = 0.048 and HR = 1.004, 95% CI: 1.002-1.009, P = 0.0336). uGBC was not an independent prognostic factor (p=0.728). The best cutoff values of serum CA125 and CA199 were 15.59 and 41.20, respectively. The KM curve showed that high expression levels of CA125 (p=0.023) and CA199 (p=0.037) predicted worse survival. However, there was no difference in survival prognosis between uGBC and GBC. The rate of misdiagnosis and underdiagnosis of uGBC exceeds 60%.
Conclusion
AJCC stage and serum CA125 and CA199 levels are suggestive of the prognosis of gallbladder cancer. The prognosis of unexpected gallbladder cancer was not as good as expected. Underdiagnosis and misdiagnosis of uGBC are common worldwide. A thorough preoperative examination and rigorous intraoperative cytopathology are important.
Comprehensive Assessment of Low-carbon Development in Resource based Provinces: A Case Study of Shanxi Province, China
Authors: Zhang Miao , Ma Xiaofei , Wang Lili
Published: April 2023

Low-carbon development has become an important measure to cope with climate change and promote sustainable development in China. It is of great significance to carry out comprehensive low-carbon development assessment research in resource-based provinces to promote ecological and environmental protection and achieve the "carbon peaking and carbon neutralization" development goal as soon as possible in China. This study takes Shanxi Province as the research area to carry out comprehensive evaluation research on low-carbon development. The factors affecting the development of low-carbon were screened and determined through Literature Meta-Analysis and the Grey Relational Model. Using the three dimensions of carbon source-carbon sink process and social-environment-economy to construct a low-carbon development evaluation index system, and using entropy weight method and TOPSIS model to analyze the low-carbon development level of Shanxi Province from 2000 to 2020, and analyze the formation mechanism of low-carbon development status. Based on the comprehensive index of low-carbon development and carbon intensity, a low-carbon development grade evaluation model is established, which was used to evaluate the low-carbon development grade of Shanxi Province in 2030. The results showed that the most influential factor on the carbon emissions of Shanxi Province is the total number of civil vehicles, the negative indicators have greater impact on carbon emissions. The low-carbon development level of Shanxi Province was transformed from Level III to Level II from 2000–2020. In 2030, the low-carbon development level of Shanxi Province will be Level I .
HIV prevalence and associated factors among orphaned adolescents and youth aged 12-24 years in South Africa
Authors: Ndlovu Philisiwe , Mabaso Musawenkosi , Naidoo Inbarani , Vondo Noloyiso , Zungu Nompumelelo
Published: April 2023

Objectives The aim of this study examines the HIV prevalence and associated factors orphaned adolescents and youth in South Africa using the 2017 population based national survey.Results Of 1 978 orphaned participants aged 12–24 years. The overall HIV prevalence was 7.8% (95% CI: 6.3–9.6). HIV was higher among females (9.2%) compared to males (6.4%). HIV prevalence was significantly (p < 0.05) higher among Black Africans than other race groups (8.2% versus 1.4%), unemployed compared to those who are employed (8.2% versus 1.3%), no condom use at last sex act (13.8% versus 5.8% who used a condom), had high self-perceived risk of HIV infection (11.4% versus 5.7% with low perception), and those who ever had an HIV test (9.5% versus 5.3% never tested). In the final multivariate model, the odds of HIV infection were significantly higher among female than males [AOR = 2.9 (95%CI: 1.1–7.8), p = 0.032] and those residing in rural informal/tribal areas than urban areas [AOR = 2.9 (05% CI: 1.1–7.7), p = 0.031]. The findings suggest a need for intervention to create employment opportunities, promote protective sex, address perceived susceptibility to HIV and encourage routine testing. Prioritising orphaned female adolescents and youth and those residing in rural informal/tribal areas.
Substance Use and Heroin Abstinence Rates Among Patients Enrolled at a Medically-assisted Therapy Clinic in Kenya: a Retrospective Cohort Study
Authors: Kuria Susan Wangeci , Mburu John Maina , Owiti Fredrick , Ochieng' Jackline
Published: April 2023

Background Methadone Maintenance Treatment (MMT) has been shown to be beneficial in several evidence-based studies. However, patients who were using multiple substances at the time of enrollment impacted the program's outcomes. Studies have shown that even while enrolled in the program, patients continue to use heroin and other drugs. The purpose of this study was to determine the rates of substance use and heroin abstinence among patients attending the Medically-Assisted Therapy Clinic in Nairobi, Kenya.Methods We conducted a retrospective cohort study on 713 patients who had enrolled in the Medically Assisted Therapy (MAT) clinic between December 2014 and February 2018. Each participant's data was collected over a 24-month period. A researcher-designed socio-demographic form and data collecting form were used to collect data. Data were analysed using SPSS version 26.0.Results Most participants were males 611(85.7%). The mean age was 34.2 years (SD 8.55). The majority had attained primary level of education 333(46.7%), were employed 424(59.47%), and were separated 322(45.1%). All the participants had used at least one other substance apart from heroin. The commonest substances were; tobacco 649(91%), followed by cannabis 591(82.9%) and benzodiazepines 367(51.5%). At 6, 12, 18, and 24 months, heroin abstinence rates were 61.3%, 76.0%, 73.5%, and 81.4%, respectively. Abstinence rates increased from 61.3% at 6 months to 81.4% at 24 months, which was statistically significant (p < 0.001).Conclusions The majority of the patients attending MAT clinic use more than one substance. There is a need to scale up the program to also offer free management for other substances. This study replicated the evidence of methadone treatment among heroin users. However, there is still a need to explore further why some patients continue to use heroin while in the program.
Structural Equation Modelling of Work-Related Musculoskeletal Disorder in Dumper Operators: The Role of Personal, Habitual, and Work-Related Factors
Authors: Kar Mohith Bekal
Published: April 2023

The main objective of this research was to examine how personal, habitual, and work-related factors affect the occurrence of work-related musculoskeletal disorders (WRMSDs) among dumper operators. The study utilized Cronbach's (CR) alpha test to assess the reliability of the analyzed underlying variable. The personal factors, measured by five questions about age, work experience, marital status, children, and education, had a CR-alpha coefficient of 0.82. The CR-alpha coefficient for the habitual factors, which included questions about smoking, alcohol consumption, medication use, and tobacco chewing, was 0.76, indicating a high level of internal consistency. Similarly, the work-related factors, which included questions about working posture, repetitive work, job demand, and work design, had a CR-alpha coefficient of 0.77, demonstrating a strong internal consistency among the questions. A confirmatory factor analysis (CFA) was performed to confirm the measurement model's construct validity. After confirming the construct validity, the relationships between the variables were explored using a structural equation model (SEM). Results indicated a moderate positive correlation between WRMSD and personal factors and a moderate positive correlation between WRMSD and work related factors. However, the relationship between WRMSD and habitual factors was not found to be significant. The goodness of fit of the final SEM model was found to be adequate with CFI and RMSEA values of 0.919 and 0.046, respectively, indicating an acceptable fit of the data to the proposed model.
A facile and straightforward immersion approach to enhance the hydrophobicity of melamine sponge for efficient cleanup of crude oils and organic solvents
Authors: Chen Jiangwei , Hu Mingyang , Liu Yun
Published: April 2023

The use of biomass-modified hydrophobic materials for cleaning up spilled oils and organic solvents from the environment is currently in high demand. In this study, we developed a simple immersion strategy to modify commercial melamine sponge (MS) using a tetrahydrofuran (THF) extract solution of biomass such as corn stove, pine, and Eucalyptus. This modification process resulted in a highly hydrophobic absorbent with satisfactory superoleophilicity towards various oils (104 g.g-1) and organic solvents (137 g.g-1). The modified MS demonstrated a good oil adsorption capacity with a contact angle of more than 130°. Remarkably, it also exhibited excellent properties of mechanical extrusion, harsh temperature treatment, and recyclability, owing to its three-dimensional high porosity and micro/nano-structure that trap air. Moreover, we found that other biomass extraction solutions such as γ-valerolactone, N, N-dimethylformamide, acetone, methanol, and ethanol could also serve as suitable modification agents to prepare hydrophobic MS through an immersion strategy. The hydrophobicity and stability of the modified MS obtained using this approach were superior to the lignin-modified and DES-extracted lignin-modified MS. Our findings open up new possibilities for the fabrication of modified MS with high hydrophobicity, using a facile, cost-effective, and environmentally-friendly dipping approach for the cleanup of spilled oils and organic solvents.
Prevalence of Psychosocial Issues Among Pregnant Women Who Do and Do Not Use Illicit Substances
Authors: Kock Loren S , Melbostad Heidi S , Heil Sarah H
Published: April 2023

Objective
It is often believed that pregnant women who use illicit substances are more likely to experience psychosocial issues like smoking, depression, and inadequate health care compared to pregnant women who do not. However, the prevalence of these psychosocial issues has rarely been calculated and compared using nationally representative data.
Methods
Important psychosocial issues identified by the American College of Obstetricians and Gynecologists were operationalized using variables in the National Survey on Drug Use and Health. We report weighted prevalence and age-adjusted odds ratios for these issues in pregnant women who did vs. did not report past-month illicit substance use.
Results
Pregnant women (n = 3,657) who reported past-month illicit substance use (6.3%; 95% CI 5.4-7.0) had significantly higher rates of almost all psychosocial issues examined, including past-month cigarette smoking (44.9% vs. 6.5%; age-adjusted odds ratio (AOR) = 7.14 (95% CI 4.98–10.20)); past-month alcohol use (36.1% vs. 7.8%; AOR = 6.80 (4.69, 9.86)); serious past-month distress (23.0% vs. 5.0%; AOR = 4.99 (3.07–8.11)); no health insurance (11.7% vs. 6.2%; AOR = 1.79 (1.07–2.99)); and receipt of food stamps (45.0% vs. 24.0%; AOR = 2.26 (1.55–3.29)). Moving 3 + times in the past year followed a similar pattern, but results were compatible with there being no difference between groups (10.6% vs. 5.5%; AOR = 1.59 (0.95–2.66)). In contrast to other issues examined, English language proficiency was higher among those who reported illicit substance use (4.7% vs. 0.4%; AOR = 0.08 (0.01–0.63)).
Conclusions
Pregnant women who use illicit substances experience higher rates of most psychosocial issues compared to those who do not, reinforcing recommendations for multidisciplinary approaches to care.
Transience in Walks with Diminishing Bias
Authors: Sims Justin Tyler
Published: April 2023

It is well-known that a random walk on Z with biased transition probability p > 1/2 independent of state is transient, tending to positive ∞ almost surely. In this paper, the more general case in which the bias diminishes for higher states is considered. A sufficient condition for transience in such walks is obtained.
Strategies to enhance indigenous Ugandan men’s support for the utilisation of LARCs amongst rural women in Uganda: A qualitative study
Authors: Kibonire Ronald Arineitwe , Ditaba David Mphuthi
Published: April 2023

Globally, many women die due to complications related to childbirth either during pregnancy, childbirth or after birth. The use of contraceptives, especially for long-term reversible methods (LARCs), is one of the best interventions to reduce maternal death. LARCs help the mother to delay pregnancy and allow for longer intervals in childbirth spacing. However, the utilisation of LARCs globally and in Uganda remains low because of limited male partner support. The purpose of this phenomenological qualitative research study was to elicit an understanding of perceptions and beliefs of rural indigenous Ugandan men towards the use of LARCs by rural women. Ultimately the study designed strategies to enhance the uptake of those methods. Purposive sampling was used to identify 65 participants for focus group interviews and 30 for individual interviews comprising married men aged 20 to 49 years. The study was conducted in Rubanda and Kiboga districts of Uganda. The researcher used semi-structured questions for individual and focus group interviews. The data analysis was done by transcribing the interviews, sorting the field notes, organising, and storing the data, listening to recordings, and reading field notes and interviews and then coding and categorising the data to build themes emerging on the phenomenon. The study established that there were perceptions and belief systems among rural indigenous Ugandan men regarding the use of LARCs by their rural women, and these acted as barriers to utilisation. These perceptions included side effects, fears, and desires, in addition to cultural and religious beliefs. The study recommends the strengthening of social, behavioural change communication, strengthening of service provision for LARCs and monitoring and evaluation systems for LARCs. Additionally, policymakers should provide a conducive environment for LARCs services provision and the Ministry of Education and Sports, through health training institutions and universities, should prepare pre-service and in-service healthcare workers to provide LARC services.
Genomic epidemiology reveals early transmission of SARS-CoV-2 and mutational dynamics in Nanning, China
Authors: Bi DeWu , Luo XiaoLu , Chen ZhenCheng , Xie ZhouHua , Zang Ning , Mo LiDa , Liu ZeDuan , Lin YanRong , Qin YaQin , Tang XiKe , Lin Lü , Wang YuanLi , Cao LiangLi , Zhao FeiJun , Zhou JinAi , Wei ShanQiu , Xi ShaoYong , Ma QiuYing , Lin Jian-yan
Published: April 2023

Background: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants are a fatal pathogen resulting in substantial morbidity and mortality, and posing a great threat to human health with epidemics and pandemics. Methods: Next-generation sequencing (NGS) was performed to investigate the SARS-CoV-2 genomic characterization. Phylogenetic analysis of SARS-CoV-2 genomes was used to probe the evolutionary. Homology protein structure modelling was done to explore potential effect of the mutations. Results: The eighty genome sequences of SARS-CoV-2 obtained from the thirty-nine patients with COVID-19. A novel variant with mutation H625R concomitant with S50L in spike glycoprotein had been identified. Phylogenetic analysis revealed that SARS-CoV-2 variants belong to several distinct lineages. Homology modelling indicated that variant with mutation H625R and S50L increases flexibility of S1 subunit. Conclusions: SARS-CoV-2 genomes are constantly evolving by accumulation of point mutations. The amino acid H625R in combination with S50L may have a significant impact on the interaction between spike glycoprotein and ACE2.
Avaliação Histológica de Enxerto de Osso Bovino Inorgânico Medular Liofilizado em Bloco para Correção de Defeito Ósseo Mandibular
Authors: Saliba Marcos Tadeu Adas , Saliba Orlando , Montovani Jair Cortez
Published: April 2023

Objetivo: Realizar a análise comparativa histológica do enxerto autógeno com o de osso bovino inorgânico medular liofilizado em bloco, para correção de defeitos ósseos, em mandíbulas de coelhos. Metodologia: 48 coelhos albinos foram divididos em 2 grupos experimentais. Grupos A: enxerto autógeno e Grupo B: enxerto xenógeno com osso bovino inorgânico medular liofilizado em bloco. Os enxertos foram fixados com miniplacas e parafusos de titânio, no lado esquerdo do corpo mandibular. Os animais foram sacrificados aos 7, 15, 30, 60, 90 e 180 dias pós-operatório. Análise histológica foi realizada por meio da microscopia óptica em quatro áreas: Zona de “Transição entre Osso Primário (OP) e Enxerto”; “Periferia do Osso Primário”; “Periferia do Enxerto”. Foram atribuídos pontos para os achados dos diferentes tipos de células e tecidos: inflamação, tecido conjuntivo e osso neoformado. Resultado: A neoformação óssea foi observada aos 15 dias pós-operatório no interior do enxerto xenógeno. A incorporação do enxerto pode ser notada a partir de 60 dias pós-operatório nos 2 grupos. Inflamação e tecido conjuntivo foram notados em ambos os grupos em diferentes graus, nas áreas estudadas. Abscessos foram observados envolvendo elementos dentários. Não houve diferenças estatísticas (p=0,1322) ao comparar os dados do grupo do xenoenxerto com autoenxerto quanto ao osso neoformado, em todas as áreas analisadas. Conclusão: O enxerto com osso bovino inorgânico liofilizado em bloco não provocou reações adversas; mostrou ser biocompatível; e permitiu a neoformação óssea.
Anti-holomorphic modes in vortex lattices
Authors: Hocking Brook J. , Machon Thomas
Published: April 2023

A continuum theory of linearized Helmholtz-Kirchoff point vortex dynamics about a steadily rotating lattice state is developed by two separate methods: firstly by a direct procedure, secondly by taking the long-wavelength limit of Tkachenko’s exact solution for a triangular vortex lattice. Solutions to the continuum theory are found, described by arbitrary anti-holomorphic functions, and give power-law localized edge modes. Numerical results for finite lattices show excellent agreement to the theory.
Chiral gauge theories on $R^3 \times S^1$ and SUSY breaking
Authors: Lee Jun Seok , Terning John
Published: April 2023

We study SU(5)SU(5) chiral gauge theories on R^3\times S^1R3×S1. With an unequal number of fundamental and antifundmental matter representations we calculate nontrivial pre-ADS superpotentials generated by composite multi-monopoles. We also point out that the structure of the composite multi-monopoles can be determined simply from the affine Dynkin diagrams of the gauge group and its unbroken subgroup. For the case of one flavor, we find that the superpotential is independent of the composite meson. We show that dynamical 4D SUSY breaking in the simplest chiral SU(5)SU(5) gauge theory can be demonstrated directly via semi-classical effects on the circle.
The psychometric properties of the Arabized Jordanian version of the Big Three Perfectionism Scale
Authors:   Al al-Bayt University, Al-Shayeb Abdelhafez Qasem , Al-Shurman Wael Mohammed ,   Al al-Bayt University
Published: April 2023

The current study aimed to develop, and examine the psychometric properties of, an Arabized Jordanian version of the Big Three Perfectionism Scale (BTPS) which consists of 45 items distributed on 10 first-order factors ("facets") and three higher-order factors (i.e., rigid perfectionism, self-critical perfectionism, and narcissistic perfectionism). Data were collected from 926 undergraduate male and female students studying at a public Jordanian university. First-order Exploratory Factor Analysis (EFA) revealed 10 facets. Three higherorder factors could be retained when the data were subjected to second-order EFA. The findings were in line with the hypothesis stating that perfectionism is a multidimensional rather than a unidimensional construct. The findings also indicated high facet and factor-level internal consistency coefficients. Overall, the findings provided support for the psychometric properties of the newly developed Arabized Jordanian version of the BTPS.
Modeling determinants of the Generation Z regional perception on the periphery: To stay or to leave
Authors: Danko Lukaš , Bednař Pavel , Voštova Kamila , Harušťakova Šarka
Published: April 2023

Regional attractiveness plays a crucial role in regional economic development and competitiveness. Despite interest in out-migration from peripheral regions, most studies overlooked Generation Z members in perceiving these factors. Therefore, the paper aims to examine the effect of the regional perception of Generation Z on their expectation of out-migration from the peripheral region. The focus group comprised 56 respondents (stakeholders) selected through purposive sampling by regional development agencies in three peripheral regions of the Czech Republic to identify regional perception indicators. The exploratory factor analysis and the principal component analysis were used to detect latent constructs of the identified regional perception indicators. Logistic regression was used to model the association between latent constructs and Generation Z’s intention to leave or to stay in the peripheral region. Economic, social, and environmental dimensions were detected as latent constructs of regional perception indicators. The first dimension represents smartness and opportunities; the second, openness, is accompanied by culture; and the third, a safe and clean environment. The estimation results suggest the effect of the economic and lifestyle dimensions (β = 0.528, p < 0.001) and the social dimension (β = 0.292, p < 0.01) of the regional perception on the intention of Generation Z to leave or stay in the peripheral region, without the effect of the environmental dimension (β = 0.033, p = 0.740). The paper emphasizes the importance of economic, lifestyle, and social indicators of regional perception in place-based policies to retain Generation Z in the peripheral regions. AcknowledgmentThis paper was supported by the Technology Agency of the Czech Republic – program ÉTA under Grant TL03000525 – Design of a Model of Metropolitan Areas in the Czech Republic affected by depopulation.
The Implications of Multiple Repeat Cesarean Deliveries On Maternal Morbidity
Authors: Can Esra , Oğlak Süleyman Cemil
Published: April 2023

OBJECTIVE: This study aimed to assess the obstetric outcomes of cesarean delivery (CD) in a cohort of pregnant women who had a history of four or more previous CDs and compared them with those who had a history of three or fewer previous CDs.
STUDY DESIGN: The cohort of this retrospective study consisted of all pregnant women who gave birth in our hospital via elective or emergency CD and who had previously undergone one or more other cesarean sections. Pregnant women who had a history of four or more CDs were included in the multiple repeat CD group, and cases who had a history of fewer than 4 CDs were enrolled in the lower-order repeat CD (comparison) group. Demographic data, medical history, clinical features, intraoperative events, and postoperative complications were recorded.
RESULTS: The multiple repeat CD group comprised 63 women, and the lower-order repeat CD group (comparison group) included 1097 cases. Intraabdominal dense adhesions (28.6% versus 14.1%, p=0.002), placenta previa (11.1% versus 4.1%, p=0.009), placenta accreta spectrum (PAS) (7.9% versus 2.4%, p=0.008), bladder injury (6.3% versus 1.7%, p=0.011), intraoperative massive hemorrhage (7.9% versus 2.2%, p=0.004), uterine artery ligation (4.8% versus 1.1%, p=0.012), internal iliac artery ligation (4.8% versus 1.2%, p=0.008), cesarean hysterectomy (4.8% versus 1.5%, p=0.045), blood transfusion (12.7% versus 4.1%, p=0.001), and maternal intensive care unit (ICU) admission (14.3% versus 2.0%, p<0.001) were significantly more common among women in the multiple-repeat CD group compared with the lower-order repeat CD group.
CONCLUSIONS: Pregnant women having multiple repeat CDs have a significantly increased risk of dense adhesions, placenta previa, PAS, intraoperative massive hemorrhage, blood transfusion, bladder injury, additional surgical interventions, including uterine artery ligation, internal iliac artery ligation, cesarean hysterectomy, and maternal ICU admission.
Certificación ISO 56002:2019. Experiencia de implementación en una empresa ecuatoriana
Authors:   Universidad Técnica Particular de Loja, Zumba Zúñiga María Fernanda , Paladines Benítez Jhoana Elizabeth ,   Universidad Técnica Particular de Loja
Published: April 2023

Este artículo presenta una visión general del enfoque de la gestión de innovación, temática que poco a poco está ganando espacio en el ámbito empresarial. El objetivo del presente estudio es analizar la implementación de la norma ISO 56002:2019 en una empresa agro productiva del Ecuador para desarrollar y desplegar capacidades de innovación, evaluar el desempeño y lograr los resultados previstos. La presente investigación es cualitativa, de carácter exploratoria-descriptiva. Para el diagnostico organizacional se realizó una auditoría interna a través de una lista de verificación, la misma que permitió evaluar el contexto de la organización, liderazgo y compromiso, planificación, apoyo, operación, desempeño y mejora. Por otra parte, para determinar la orientación estratégica se realizó observación directa, así como un mapa de empatía, adicional a ello se llevó a cabo un focus group con los directivos de la empresa. Como instrumentos se han utilizado, una lista de verificación, la ficha de observación ficha para focus group y ficha para el mapa de empatía. La organización investigada es un grupo empresarial agrícola del Ecuador, donde se investigó a 8 clientes, 12 consumidores finales, 169 colaboradores, 11 proveedores 2 actores del gobierno y 2 certificadoras. El estudio de caso examinado ratifica el escaso nivel de implementación de la norma en cuestión, pese a que la misma contribuye a alcanzar mejores niveles de desempeño en los procesos, mejora de la calidad y otorga un mayor posicionamiento en el mercado.
ND2 Gene Sequencing of Sub fertile Patients Recovered from COVID-19 in Association with Toxoplasmosis
Authors: L. Jiad Abdulla , Ismael May K. , Muhsin Salwa S. , Laftaah Al-Rubaii Bahaa Abdullah
Published: April 2023

A total of (90) blood samples were collected from male patients infected with Toxoplasmosis who recovered from COVID- 19 and attended Kamal Alsamiraai Hospital from 15 January to 15 September 2021. We measured anti-Toxoplasma antibodies (IgG and IgM) detected by ELISA, whereas Anti-COVID-19 antibodies (IgG and IgM) were estimated using Elisa and Afilias. The semen characteristics were also studied among fertile, healthy individuals (control group) and sub-fertile patients. Results showed that the mean sperm count was high among the control group (40.5±1.3x 106/ml) compared with that of the sub-fertile patients (10.3±1.75 and 8.8±1.9 x 106/ml for oligozoospermia, and oligoasthenozoospermia respectively), and it was the highest (44.7±1.4 x 106/ml) among asthenozoospermia patients. Compared to the control group, there were highly significant differences between anti-Toxoplasma IgG antibodies and anti-COVID-19 IgG antibodies (P<0.001). The mean level of Toxoplasma IgM was (11.74±8.90) and for control was (0.05±0.10), while the mean level of COVID-19 IgM was (1.91±1.06) and for control was (0.04±0.03) in sub-fertile patients. The mutation occurred in IL-IB gene A to G transgene at site 4514 of the IL-IB gene (sample code, 6383) and in the case of an invalid sample code, 2409 and 5097. In the alanine codon, the GCA codon has mutated into GCG. Also, G to A transgene occurred at site 4514 of the IL-IB gene. (sample code, 6750) In the case of an invalid sample code, it happened in 010081 and 009593. In the alanine codon, the ATG codon has mutated into ATA.

Keywords: ND2 Gene, sequence, Sub-fertile patients, COVID-19, Toxoplasmosis
Antifungal Activity and Qualitative Phytochemical Analysis of Green alga Ulothrix sp.
Authors: AL-Khafaji Zainulabdeen H. A.
Published: April 2023

The antifungal activity of the ethanolic hot extract of the green filamentous species Chlorophyta was evaluated in vitro at various doses (25, 50, and 100 mg/ml) and shown to be effective. Antifungal activity was performed by evaluating the percentage inhibition growth method against some fungus were obtained from the postgraduate laboratories in the Department of Biology - Faculty of Science / University of Mustansiriya (Aspergillus niger, Fusarium oxysporum, Penicillium sp. and Rhizoctonia solani ). As a result of the research, it was discovered that the hot ethanol extract of Ulothrix sp had the most significant effect (91.8 %) on Rhizoctonia solani growth inhibition at a concentration of 100 mg/ml and the minor effect (22.4 %) at a concentration of 25 mg/ml against Aspergillus niger growth inhibition. It was discovered by primary chemical analysis of active substances that alkaloids, Terpenes, Saponines, phenols, Flavones, Resins, Steroids, and tannins were present in hot ethanolic alga extract. Finally, the GC-mass analysis performed on Ulothrix sp extracts revealed a large number of antibacterial activity-producing substances. Because the current research shows that algae have antifungal activity, it has the potential to be developed as a new source of active chemicals for human and plant consumption in a variety of applications shortly.

Keywords: Antifungal activity, Ulothrix, Active compounds,
Classification of Some Species Algae in the Tigris River within the City of Baghdad- Iraq
Authors: Mohammed Mahdi Zinah , Aidan Al-Hussieny Ahmed
Published: April 2023

Algae were diagnosed in three stations at three seasons for 2018-2019 in the Tigris River. It was diagnosed with 158 species for five main divisions (Chlorophyta, Bacillariophyta, Cyanophyta, Pyrrhophyta and Euglenophyta). Chlorophyta division represented 14 genera and 33 species with a percent of 20.88%, Bacillariophyta division was 22 genus and 84 species with a percent of 53.16%, division Cyanophyta was14 genus and 41 species with 25.94%, pyrrhophyta division was four genus and four species with 2.53%, and the Euglenophyta division was one species with 0.63%. The study also showed the essential common species for quantitative and qualitative studies within the study stations: Chlorella vulgaris, Oscillatoria lemmetica, Amphiprora alata, Nitzschia clausii and Navicula enigmatica. In conclusion, the study showed an abundance of algae densities within the study sites.

Keywords: Classification, Algae, Tigris River.
Establishing Infodemic Management in Germany: A Framework for Social Listening and Integrated Analysis to Report Infodemic Insights at the National Public Health Institute
Authors: Boender T Sonia , Schneider Paula Helene , Houareau Claudia , Wehrli Silvan , Purnat Tina D , Ishizumi Atsuyoshi , Wilhelm Elisabeth , Voegeli Christopher , Wieler Lothar H , Leuker Christina
Published: April 2023

Background

To respond to the need to establish infodemic management functions at the national public health institute in Germany (Robert Koch Institute, RKI), we explored and assessed available data sources, developed a social listening and integrated analysis framework, and defined when infodemic management functions should be activated during emergencies.

Objective

We aimed to establish a framework for social listening and integrated analysis for public health in the German context using international examples and technical guidance documents for infodemic management.

Methods

This study completed the following objectives: identified (potentially) available data sources for social listening and integrated analysis; assessed these data sources for their suitability and usefulness for integrated analysis in addition to an assessment of their risk using the RKI’s standardized data protection requirements; developed a framework and workflow to combine social listening and integrated analysis to report back actionable infodemic insights for public health communications by the RKI and stakeholders; and defined criteria for activating integrated analysis structures in the context of a specific health event or health emergency.

Results

We included and classified 38% (16/42) of the identified and assessed data sources for social listening and integrated analysis at the RKI into 3 categories: social media and web-based listening data, RKI-specific data, and infodemic insights. Most data sources can be analyzed weekly to detect current trends and narratives and to inform a timely response by reporting insights that include a risk assessment and scalar judgments of different narratives and themes.

Conclusions

This study identified, assessed, and prioritized a wide range of data sources for social listening and integrated analysis to report actionable infodemic insights, ensuring a valuable first step in establishing and operationalizing infodemic management at the RKI. This case study also serves as a roadmap for others. Ultimately, once operational, these activities will inform better and targeted public health communication at the RKI and beyond.
Focusing on Digital Research Priorities for Advancing the Access and Quality of Mental Health (Preprint)
Authors: Torous John , Benson Nicole M , Myrick Keris , Eysenbach Gunther
Published: April 2023

UNSTRUCTURED

Digital mental health solutions are now well recognized as critical to solving the global mental health crisis. As research accelerates, it is now clear that solutions ranging from computer-based therapy programs to virtual reality headsets and smartphone apps to large language model chatbots are of interest, feasible, and hold exciting potential to improve mental health. This research should now consider the next generation of scientific and clinical questions regarding if these new approaches are equitable, valid, effective, implementable, efficacious, and even cost-effective. This paper outlines several of the new frontiers for the next generation of research and introduces JMIR Publications’ partnership with the Society of Digital Psychiatry to further advance these aims.
Impact of ChatGPT on Interdisciplinary Nursing Education and Research (Preprint)
Authors: Miao Hongyu , Ahn Hyochol
Published: April 2023

UNSTRUCTURED

ChatGPT, a trending artificial intelligence tool developed by OpenAI, was launched in November 2022. The impact of ChatGPT on the nursing and interdisciplinary research ecosystem is profound.
Understanding Professional Advocacy: A Mixed Method Protocol to Explore Professional Nurse Advocacy and Professional Midwifery Advocacy in one UK NHS Trust. (Preprint)
Authors: PAP Team Hilary , Goldspink Sally , Abdulmohdi Naim , Alexander Marie
Published: April 2023

BACKGROUND

In the UK, the concept of Professional Advocacy was introduced in the midwifery profession in 2017. In response to the C-19 pandemic, the Chief Nurse for England directed it be rolled wider to the UK Registered Nurse population, developing the Professional Nursing Advocate role. To date, however, little is known about the impact of the professional advocacy roll on the day-to-day experiences of the nursing and midwifery workforce, nor if it helps improve quality in practice, nurse/midwife wellbeing and retention.

OBJECTIVE

The research will explore how the Professional Nursing Advocate (PNA) and Professional Midwifery Advocate (PMA) roles are embedded in one UK NHS Acute Trust, with focus toward: the PNA/PMA experience; the whole nursing/midwifery staff use of the role; Quality Improvement in Practice (QiP); nurse/midwife wellbeing and nurse/midwife retention.

METHODS

This multistage mixed method study is designed over four workstreams: Workstream 1 explores the organisational context of PNA/PMA roles and organisational statistics on QiP, wellbeing and retention. Workstream 2 uses semi-structured interviews with PNA/PMAs in that organisation to understand their experiences of being a PNA/PMA, what they do in the role, and how they feel it may impact on nurse/midwifes QiP, wellbeing and retention. Workstream 3 is twofold: Part A will survey the organisations whole nurse and midwifery population to understand nurses/midwives’ awareness/access/understanding of the role. Part B will hold focus group with nurses/midwives. The first focus group will be with nurses/midwives who have actively used the PNA/PMA role. The second focus group will be with nurses/midwives who have not yet consulted with PNA/PMA. Workstream 4 will co-design, with PNAs/PMAs, nurses and midwives, recommendations to inform local policy, practice, and implementation of the PNA/PMA role across the organisation.

RESULTS

Integration of the findings from the 4 workstreams will lead the organisational implementation of the PMA/ PNA role, map nurses/midwives’ routes to access PMA/PNA’s, develop strategies for how the role can be used in relation to QiP, staff wellbeing and retention, and provide recommendations for local policy.

CONCLUSIONS

The findings will be translated to inform national policy and implementation of the PNA/PMA role and will be translated to inform allied health professionals’ development of the professional advocacy role.
La Inteligencia Artificial en la transformación de procesos universitarios
Authors: Martínez Yuri Sebastián
Published: April 2023

En el presente artículo se expondrá la posible aplicación de la Inteligencia Artificial (IA) en las diferentes áreas que conforman las universidades: en su comunidad (académico, investigadores, estudiantes, personal administrativo), la oferta académica y en el ámbito de investigación, de cultura deportivo y el impacto que puede tener en cada una de ellas, para la toma de decisiones, propuestas, trabajos e investigaciones. De igual manera se analizarán los pros y contras de aplicar dicha tecnología en las universidades.
OPTIMAL TWO-IMPULSE INTERPLANETARY TRAJECTORIES: EARTH-VENUS AND EARTH-MARS MISSIONS
Authors: Gagg Filho L. A. , da Silva Fernandes S.
Published: April 2023

This work describes several models to design optimal interplanetary trajectories. The transfer problem consists in transferring a space vehicle from a circular low Earth orbit (LEO) to a circular low orbit around a destiny planet (Venus or Mars). Models based on the two-body, four-body, and five-body problems are considered. Also, several versions of the patched-conic approximation are utilized including a detailed version that designs a lunar swing-by maneuver. The results show that the optimal trajectories for Earth-Mars and Earth-Venus missions collide with the Moon if a lunar swing-by maneuver with an unspecified altitude of the closest approach is included in the trajectory design; however, sub-optimal trajectories that do not collide with the Moon exist, presenting a smaller fuel consumption than the trajectories without lunar swing-by and with no greater changes in the time of flight.
PHYSICAL PROPERTIES AND MEMBERSHIP DETERMINATION OF THE OPEN CLUSTERS IC 4665, NGC 6871 AND DZIM 5 THROUGH uvby - β PHOTOELECTRIC PHOTOMETRY
Authors: Peña J. H. , Rentería A. , Paredes J. D. , Piña D. S.
Published: April 2023

uvby - β photoelectric photometry of stars in the direction of the open clusters IC 4665, NGC 6871 and Dzim 5 is presented. From this uvby - β photometry we classified the spectral types which allowed us to determine the reddening and, hence, the distance. Membership of the stars to the cluster was determined. Our results are compared with those obtained by GAIA DR2.
Social Network Mental Disorders Detection via Online Social Media Mining
Authors: Mythily Mrs. V. , S Hariharan , U Kavin , K Kowsik , S Sakthivel
Published: April 2023

Abstract: The rapid growth in popularity of the social networking results in problematicusage. An increasing number of social network mental disorders (SNMDs), like Information Overload, Cyber-Relationship Addiction, and Net Compulsion, are recently mentioned. Mental disorders symptoms are normally observed today passively, which are resulting in delayed clinical process of intervention. In this study, users alleged that mining online social behavior yields an opportunity for active identification of SNMDs in an early stage. It is challenging for finding SNMDs since mental status cannot be directly observed from social activity logs data. This approach, novel and innovative to practice the SNMD detection, is not relying on self-revealing of the mental factors using questionnaires in the Psychology. Depression detection taken from tweets records are processed out after proper preprocessing steps. Moreover, to address the above said problems, this project proposed a new depression detection classification model which use K-Nearest Neighbor and a Support Vector Machine based classification. Python 3.7 is used as the language for project development.
Automated Engine Design using Machine Learning
Authors: Raorane Paras , Rathod Bhagyesh , Raut Shubham , Sankpal Sahil , Shinde Nilesh
Published: April 2023

Abstract: Machine Learning has been widely used in solving complex problems across various fields for the past decade, and computers have become more powerful than ever before. Mechanical engineers have a responsibility to use these groundbreaking discoveries to improve existing instruments and methodologies for better efficiency in production. Technologies like Machine Learning, Deep Learning, and Computer Vision can automate complex design procedures and can be integrated with existing technologies to create the building blocks for the 5th industrial revolution. Computerized programs can be helpful in situations where resources like time and skilled labor are scarce. The project aims to use Machine Learning and other Python-based frameworks to develop an interactive interface for designing complex models, specifically a combustion engine.
An Analytical Study of Changing Dynamics of the Indian Market with Reference to E-Marketplaces
Authors: Tiwari Dr. Richa , Gupta Mr. Vivek , Jhala Chitranshi , Dungarwal Komal , Ganna Shubham , Mehta Kashish , Agarwal Ridhi
Published: April 2023

Abstract: E-commerce is booming in the modern business world. E-commerce is electronic commerce. Electronic commerce (ecommerce) involves the buying and selling of goods and services, or the transfer of funds and data over electronic networks, primarily the Internet. E-commerce (electronic commerce) is a paradigm shift affecting both marketers and customers. In fact, e-commerce is more than just another way to promote existing business practices. This completely changes the traditional way of doing business. This major change in business model has resulted in tremendous growth worldwide. India is no exception. Massive internet penetration has contributed to the growth of e-commerce, and startups in particular are increasingly using this option as a differentiating business model. In addition, e-commerce has a significant impact on the environment. While this model is widely used in current business scenarios, this option has not yet been fully explored. Current research is being conducted to illustrate e-commerce scenarios and analyze e-commerce trends. The study also examines key variables critical to the success of e-commerce business models.
Two Sample Statistical Test for Location Parameters
Authors: Kumar Narinder , Kumar Arun
Published: April 2023

A class of distribution-free tests for the homogeneity of location parameters is proposed and compared with different competitors in terms of Pitman asymptotic relative efficiency. A numerical example is provided and a simulation study is made to check the performance of the tests.
Intervención cognitivo-conductual para favorecer calidad de vida, bienestar psicológico y funcionamiento cognitivo en adultos mayores
Authors: Cruz-Peralta Maria de Jesús , González-Celis-Rangel Ana Luisa
Published: April 2023

Favorecer la capacidad funcional de los adultos mayores (AM) es prioridad con una población mundial envejecida. El objetivo del reporte de investigación es evaluar el efecto del módulo de psicoestimulación cognitiva de la ICC, en la calidad de vida, bienestar psicológico y funcionamiento cognitivo como indicadores de la capacidad funcional en tres mujeres adultas mayores. El diseño de investigación fue de series cronológicas con cinco observaciones. En el análisis de resultados mediante Índices de No Solapamiento (PND, NAP, PEM) de cada dimensión de las variables, en algunas dimensiones se preservó y en otras se incrementaron las puntua-ciones, mientras en el análisis visual del puntaje total de cada variable se encontraron diferencias entre las observaciones previas (O1, O2, O3) a la intervención (X) y las observaciones posteriores a la intervención (O4, O5). Se concluye que hay evidencia para afirmar que la intervención favoreció o preservó la capacidad funcional en las AM.
Relación entre bienestar y preocupación ambiental en Jóvenes de Buenos Aires en contexto de pandemia
Authors: Favara Jésica Verónica , Moreno José Eduardo
Published: April 2023

En este artículo se correlaciona bienestar y preocupación ambiental en residentes del Área Metropolitana de Buenos Aires (AMBA), Argentina, en contexto de pandemia por Covid-19. Con un muestreo no probabilístico intencional se evaluaron 156 jóvenes de entre 18 y 25 años (M = 20.99; DE = 2.09) con adaptaciones locales de las escalas de bienestar (Castro Solano, 2011) y de preocupación ambiental (Cassullo et al., 2016). Los resultados evidenciaron elevación en la ruta de acceso al bienestar vida comprometida con una mediana de 26 (23-29) y en la dimensión de preocupación ambiental afinidad emocional con una mediana de 20 (17-23). Vida con significado correlacionó de modo significativo con las dimensiones afinidad (rho = 0.178; p < 0.05) y conectividad (rho = 0.191; p < 0.05) y esta última también con vida comprometida (rho = 0.158; p < 0.05). Esto podría explicarse con el incremento de jóvenes proambientales y el aumento de conocimientos acerca de la naturaleza por el impacto del Covid-19, resultando relevante para la implementación de políticas gubernamentales afines.