bluuebunny/crossref_metadata_2025 huggingface dataset:
Challenging the Academic (MIS) Categorization of Urban Youth Building a Case for Puerto Rican High Achievers
Authors: Antrop-gonzález René , Vélez William , Garrett Tomás
Published: March 2023

This article is intended to dispel the myth that Latinas and Latinos and other urban high school youths of color are not capable of performing at high academic levels. Much research shows that youths of color are underrepresented and underserved in gifted education programs. The authors describe the four success factors to which 10 working-class Puerto Rican high school students from low-income families attribute their high academic achievement: ( a) religiosity and extracurricular activities as sources of social capital; (b) affirming and maintaining a Puerto Rican identity; (c) maternal influences on students' academic achievement; and (d) the potential of caring teachers and other school staff to influence high academic achievement. Finally, the findings suggest that opportunities for students of color are still inequitably structured in large, comprehensive high schools. Hence, the authors argue that schools must continue to bridge the large gap between themselves and the communities they serve and make use of the funds of knowledge and social capital that their students already bring to school.
Learning and Behavioral Difficulties among Chinese American Children and Adolescents
Authors: Wu I-hwey , Chen Kaili
Published: March 2023

The authors review 11 studies published from 1971 through the 1990s on learning and behavioral difficulties among Chinese American children. The focus of the review is on (a) quantity and quality of the studies, (b) topics examined, and (c) research findings. Results showed that limited English proficiency, delinquency and gangs, and emotional and behavioral problems have been examined extensively. Studies investigating (a) the academic performance of children from microcultures and those with disabilities, (b) instruction oriented resolutions to learning and behavioral problems, and (c) the correlation between cultural/societal factors and psychiatric problems are needed to enhance the quality of instruction for Chinese American students. Finally, research toward more special instruction for all culturally and linguistically diverse groups is advocated.
Culturally Responsive Schoolwide Positive behavior Support: A Case Study in One School With a High Proportion of Native American Students
Authors: Jones Cathy , Caravaca Liz , Cizek Susan , Horner Robert , Vincent Claudia
Published: March 2023

Schools face an array of recommendations for reforming educational practices. If these recommendations are to be implemented on a large scale, reformers will need to embed clear strategies to make educational innovations and implementation procedures culturally responsive. Schoolwide positive behavior support, as an approach to whole-school discipline, offers one example of an innovative reform that encourages cultural responsiveness. The authors present a brief overview of schoolwide positive behavior support, the ways cultural responsiveness is being included in the implementation of this approach, and practical messages from a case study with one rural New Mexico school that has embraced the approach. Implications are offered for including cultural responsiveness in all educational reform efforts and future research.
Aprendizaje Organizacional como factor condicionante de la competitividad de la Empresa Pequeña y Mediana – PYME
Authors: Ramírez John Fredy
Published: March 2023

El aprendizaje organizacional se posiciona como pieza clave en el nuevo contexto de competitividad empresarial. Los aprendizajes vividos a raíz de la crisis global del Covid-19 y de la transformación cultural y digital que venía en curso, mostró a las organizaciones la importancia de aprender permanentemente y de saber custodiar y enriquecer los activos de conocimiento que toda organización posee en su talento y en su experiencia. La pequeña y mediana empresa – PYME hace parte de este contexto acelerado de cambio y transformación de los mercados.  Dada su importancia capital en la economía al agrupar al 99% de las empresas en la región, la empresa Pyme tiene frente a sí el desafío de acelerar la incorporación del aprendizaje organizacional al interior de sus estructuras como factor condicionante de competitividad. Pocos estudios se han realizado para describir esta correlación en el terreno de la pequeña y mediana empresa, por eso, el presente artículo ofrece el avance y primeros resultados sobre el aprendizaje organizacional como factor condicionante de la competitividad en la empresa Pyme, para contribuir al vacío de conocimiento en dicho contexto. El estudio emplea un enfoque cuantitativo con alcance correlacional, de diseño no experimental transeccional. Se aplicará un instrumento que permitirá determinar la relación entre las dos variables, en el contexto de la empresa Pyme de la ciudad de Panamá. El análisis de resultados se hará siguiendo los postulados rigurosos de la investigación científica, usando herramientas estadísticas y conduciendo análisis descriptivos, que permitan hallazgos que tengan la pretensión de ser generalizados. Sin embargo, las primeras aproximaciones de esta revisión teórica reflejan claramente que el aprendizaje organizacional se ha vuelto un elemento clave en el nuevo ecosistema de los negocios y la economía digital.
Impact of TECAR therapy on post-natal rectus diastasis: A randomized trial
Authors: Elhosary Eman A. , Hamada Hamada Ahmed , ElAzab Doaa Rafat , Essam Yassmin , Abdelsamea Gehan A.
Published: March 2023

Background. Rectus diastasis is a common problem affecting postpartum mothers. It decreases the integrity as well as functional strength of the abdominal wall, and causes low back pain and pelvic instability
Objective. To examine how TECAR therapy (monopolar capacitive resistance radiofrequency of 448 KHz) affects rectus diastasis in postpartum women.
Design. A prospective randomized controlled trial.
Setting. Outpatient physical therapy clinic, Kafr El Sheikh University.
Methods. Forty postnatal women having diastasis recti abdominis (DRA) > 2.5 cm were recruited and randomized into two equal groups; the control group received a program of selected abdominal exercises and low caloric diet of 1200 kcal/ day for 4 weeks, and the study group received the same control group interventions in addition to TECAR application. DRA degree was the primary outcome, while weight and body mass index measures were the secondary outcomes. All variables were measured at the baseline and after 4 weeks of the intervention by rectus diastasis test, abdominal ultrasonography, and calibrated weight scale.
Results. Analysis showed a significant reduction (P < .05) in weight, body mass index, rectus diastasis test, and ultrasound measures in both groups in favor of the study group
Conclusion. Using TECAR with a standard program of abdominal exercises and low caloric diet has more beneficial effects on postnatal DRA than practicing the exercise program alone with the low-calorie diet.
Biotensegration of malocclusion and temporomandibular disorders with diseases of the musculoskeletal system and posture defects – a literature review, supported by own observations
Authors: Lietz - Kijak Danuta , Bitenc-Jasiejko Aleksandra , Skomro Piotr , Konior Krzysztof , Kijak Konrad , Kowacka Małgorzata , Śliwiński Zbigniew
Published: March 2023

Although it enables a quick evaluation, medical diagnostics of the human myofascial-skeletal system is not always used to its full capabilities. This often hampers the objective assessment of a dysfunction and limits treatment options. Dysfunctions of the stomatognathic system, of different aetiology, are becoming more prevalent. Many scientific studies are in to relationships between organs and systems of the human body that can cause dysfunctions of the temporomandibular disorders. Studies investigating correlations between a myofascial-skeletal disorder and temporomandibular disorders are to be found in the literature. To achieve a good understanding of aetiology of these dysfunctions, a holistic view of a patient is advisable, which takes into consideration the fact that the temporomandibular joint is an integral part of the whole body. This study is a review of the literature, supported by own examples on investigating the relationship between myofascial-skeletal disorders and a temporomandibular disorder, which, in the light of current medical knowledge, is attributed to the phenomenon of biotensegrity. A conclusion has been put forward on the basis of 136 scientific reports that a dependency exists between the said dysfunctions.
Relationships between the quality of life and the intensity of pain and functional efficiency in women and men with degenerative changes in the lumbar spine
Authors: Puszczałowska-Lizis Ewa , Szymański Dominik , Wawrzykowska Iwona , Lizis Sabina
Published: March 2023

Introduction. Back pain is a serious medical and social problem. The aim of this study was relationships between the quality of life and the intensity of pain and functional efficiency in women and men with degenerative changes in the lumbar spine.
Material and methods. The study involved 53 women and 52 men, who, due to chronic pain in the lumbar spine due to degenerative changes, were qualified for therapy at the Local Government Health Center in Miedziana Gora. The research tool was NRS scale, Oswestry Distability Index ODI and shortened version of the survey WHOQOL-BREF. The collected research results were analysed with the use of Mann-Whitney U test, Chi-square test and Spearman rank correlation.
Results. Statistically significant differences in the values of the ODI questionnaire relating to the category "care" (p = 0.046) were found. In men, statistically significant negative associations between body build and the WHOQOL-BREF survey values concerning the somatic (p = 0.012), psychological (p = 0.007) and social (p = 0.022) domains were found. Statistically significant positive associations between the intensity of pain and functional capacity according to the ODI were found in both sexes (p < 0.001). Statistically significant negative relationships between the NRS value and the psychological domain were noted in women (p = 0.023), and with the somatic (p < 0.001), psychological (p = 0.006), socjal (p = 0.013) and environmental (p < 0.001) domain in men.
Wnioski. In terms of functional efficiency, men with back pain caused by degenerative changes are characterized by greater limitations in terms of activities related to care. In men, the increase in BMI is accompanied by a decrease in the quality of life in the somatic, psychological and social domains. In both sexes, the increase in the intensity of back pain affects the deterioration of functional efficiency. In women, the increase in the intensity of pain was associated with a decrease in the quality of life in the psychological domain, and in men in the somatic, psychological, social and environmental domains.
الاستقرار القانوني ودوره في جذب الاستثمار الأجنبي
Authors: ملكاوي بشار
Published: March 2023

يحقق الاستثمار الأجنبي نفعاً لكلا الطرفين؛ الدولة المستضيفة للاستثمار، والجهة المستثمرة، ولحماية هذا النفع لا بد من تحقيق العدالة التي تحفظ حقوق كلا الطرفين، القاعدة القانونية هي الوسيلة التي تُمكّن من تحقيق العدالة؛ من هنا كانت الحاجة العملية لتحقيق النفع المرجو من الأطراف من خلال الاستقرار القانوني في الدولة.

تقدّم هذه الدراسة ثلاثة محاور تتمثل في: القوانين الجاذبة للاستثمار الأجنبي، والقوانين الداعمة والمشجعة للاستثمار الأجنبي، وأخيراً قوانين استدامة الاستثمار الأجنبي.
حكم تغيير الجنس وأثره في عقد الزواج وفقاً للنظام السعودي والقانون الكويتي (دراسة مقارنة)
Authors: عبدالإله الشايع فهيم
Published: March 2023

المستخلص:

يعيش العالم نظاماً ثنائياً (الذكر والأنثى) نلحظُ فيه التوازن الاجتماعي في أداء الأدوار والاستمرارية في حفظ النسل بين مجتمعات العالم، وأمام هذا الترتيب الذي يشكل القاعدة العامة نجد أن هناك بعض الاستثناءات حول وجود أشخاص يعانون من اضطراب الهوية الجنسية، إذ تتمحور معاناتهم بالوقوف في منطقة غامضة تنتمي للجنسين كلاهما، وفي الوقت نفسه لا يوجد ما يوضح انتماءهما لجنس دون الآخر، وهذا ما يُعدُ السبب النفسي في الميل للتخلص من هذه الحالة بطلب تغيير الجنس، الذي لا يكون مشروعاً في جميع الأحوال، إذ لا يجيزه أغلب المشرعين بانفراده كسبب لتغيير الجنس دون أن يصاحبه معيارٌ آخر، ليصبح طلب التغير تصويباً للوضع الجنسي.

ومتى كان طلب تغيير الجنس مشروعاً، فإن إكمال تصويب الجنس- سواء بالعلاج الهرموني أو بإجراء العمليات الجراحية- ينتج آثاراً لعل أهمها في عقد الزواج، وهذا ما تناولته الدراسة من حيث أثره على استمرار عقد الزواج وطبيعة إنهاء العلاقة الزوجية في النظام السعودي والقانون الكويتي، وقد توصلت هذه الدراسة الى كثير من النتائج والتوصيات في مقدمتها: مراعاة وجود تشريعات منظمة لمسألة تصويب الجنس من حيث مدى المشروعية والشروط والإجراءات.
المركز القانوني للوسيط الأجنبي في سوق الأوراق المالية(دراسة مقارنة)
Authors: حسن محمد أحمد
Published: March 2023

هدفت الدراسة إلى معرفة موقف المشرع المصري واللبناني والأردني من الاعتراف بالشركات الأجنبية لمزاولة مهنة الوساطة المالية في البورصة، والآثار القانونية المترتبة على ذلك.

وتوصلت الدراسة إلى مجموعة من النتائج أهمها: اعتراف التشريعات محل الدراسة بالشركات الأجنبية لمزاولة مهنة الوساطة المالية في البورصة، وترتب على اعتراف التشريعات المقارنة بالوسيط المالي الأجنبي مجموعة من الآثار تمثلت في حقه في الحصول على عمولة مقابل الخدمات التي يقدمها للعملاء، وحقه في طلب الغطاء، وحقه في التنفيذ فــي السوق، والتزامه بإبرام عقد فتح حساب مع كل عميل، وبتقديم القوائم والتقارير المالية للبورصة، وبتمكين الهيئات الرقابية من أداء دورها الرقابي على الشركة.

وأوصت الدراسة بأن تضع التشريعات نص خاص يتضمن الشروط الخاصة بالوسيط المالي الأجنبي، وفي مقدمة هذه الشروط شرط المعاملة بالمثل، ضرورة النص في تشريعات الأوراق المالية على تحديد عمولات الوسطاء الأجانب، بالإضافة إلى وضع حد أعلى وأدنى للعمولة، إضافة نص خاص يمنح شركات الوساطة الأجنبية، الحق في الحصول على الضمانات الكافية التي تكفل وفاء المستثمرين بالتزاماتهم، وإنشاء لجنة فنية خاصة تابعة للجهات الرقابية مهمتها التفتيش الدوري على شركات الوساطة المالية الأجنبية المتعاملة في البورصة.
The Influence of Location and Price on Shopping Decisions at Practical Gelael Makassar
Authors: Irfan Andi , Andi Nuryadin  , Pahmi  , Andi Alim
Published: March 2023

The important factors considered in choosing the location of each supermarket are different. For a supermarket or mini market, the most important factor is being close to consumers. To achieve the goals of a good marketing company, it is necessary to have the right marketing strategy, including pricing by paying attention to changes in consumer behaviour. This study aims to determine the effect of location and price on shopping decisions at Gelael Practical Makassar. This study uses quantitative analytical research methods. The results of this study found that location and price had a significant effect on shopping decisions; Price has a significant effect partially on shopping decisions. Price is the main variable that influences consumer evaluation of the product to be purchased; Meanwhile, the results of multiple linear regression analysis show that consumer decisions are more influenced by price than location, in shopping decisions at Gelael Practical Makassar. It is recommended that the company can pay attention to other factors that exist to further improve the shopping decision.
V Jornadas De Investigación Y Encuentro De Semilleros De La Carrera De Nutrición Y Dietética
Authors: Flores Tola Cecilia Brenda , Loza Sosa Jannette Marga
Published: March 2023

Introducción: La formación investigativa en la etapa universitaria es un componente esencial, aquellos futuros profesionales en el área de salud deben desarrollar una actitud crítica y reflexiva sobre las problemáticas actuales. Objetivo: Promover la formación investigativa sobre las distintas temáticas en el área de Nutrición y Dietética a nivel universitario y desarrollar un nivel académico profesional competente. Metodología: El evento fue completamente gratuito, desarrollado el 8 -9 de noviembre de 2022 con una duración de 280 minutos, realizado en la Universidad Adventista de Bolivia en modalidad virtual. Resultados: Se presentaron 10 artículos de revisión bibliográfica por los estudiantes de la carrera. La selección de participantes se realizó a través de una clasificación previa. El evento fue respaldado por docentes y coordinación de Investigación. Conclusiones: La revisión de los artículos de investigación en las distintas áreas de la nutrición y dietética es necesaria para fortalecer la formación continua en los estudiantes.
A network pharmacology and molecular docking approach in the exploratory investigation of the biological mechanisms of lagundi (Vitex negundo L.) compounds against COVID-19
Authors: Rivera Robertson G. , Regidor Patrick Junard S. , Ruamero Jr Edwin C. , Allanigue Eric John V. , Salinas Melanie V.
Published: March 2023

Coronavirus disease 2019 (COVID-19) is an inflammatory and infectious disease caused by severe acute respiratory syndrome coronavirus 2 virus with a complex pathophysiology. While COVID-19 vaccines and boosters are available, treatment of the disease is primarily supportive and symptomatic. Several research have suggested the potential of herbal medicines as an adjunctive treatment for the disease. A popular herbal medicine approved in the Philippines for the treatment of acute respiratory disease is Vitex negundo L. In fact, the Department of Science and Technology of the Philippines has funded a clinical trial to establish its potential as an adjunctive treatment for COVID-19. Here, we utilized network pharmacology and molecular docking in determining pivotal targets of Vitex negundo compounds against COVID-19. The results showed that significant targets of Vitex negundo compounds in COVID-19 are CSB, SERPINE1, and PLG which code for cathepsin B, plasminogen activator inhibitor-1, and plasminogen, respectively. Molecular docking revealed that α-terpinyl acetate and geranyl acetate have good binding affinity in cathepsin B; 6,7,4-trimethoxyflavanone, 5,6,7,8,3',4',5'-heptamethoxyflavone, artemetin, demethylnobiletin, gardenin A, geranyl acetate in plasminogen; and 7,8,4-trimethoxyflavanone in plasminogen activator inhibitor-1. While the results are promising, these are bound to the limitations of computational methods and further experimentation are needed to completely establish the molecular mechanisms of Vitex negundo against COVID-19.
Antibiotic resistance in Neisseria gonorrhoeae: broad-spectrum drug target identification using subtractive genomics
Authors: Omeershffudin Umairah Natasya Mohd , Kumar Suresh
Published: March 2023

Neisseria gonorrhoeae is a Gram-negative aerobic diplococcus bacterium that primarily causes sexually transmitted infections through direct human sexual contact. It is a major public health threat due to its impact on reproductive health, the widespread presence of antimicrobial resistance, and the lack of a vaccine. In this study, we used a bioinformatics approach and performed subtractive genomic methods to identify potential drug targets against the core proteome of N. gonorrhoeae (12 strains). In total, 12,300 protein sequences were retrieved, and paralogous proteins were removed using CD-HIT. The remaining sequences were analyzed for non-homology against the human proteome and gut microbiota, and screened for broad-spectrum analysis, druggability, and anti-target analysis. The proteins were also characterized for unique interactions between the host and pathogen through metabolic pathway analysis. Based on the subtractive genomic approach and subcellular localization, we identified one cytoplasmic protein, 2Fe-2S iron-sulfur cluster binding domain-containing protein (NGFG RS03485), as a potential drug target. This protein could be further exploited for drug development to create new medications and therapeutic agents for the treatment of N. gonorrhoeae infections.
Effective microbial molecular diagnosis of periodontitis-related pathogen Porphyromonas gingivalis from salivary samples using rgpA gene
Authors: Jeong Jinuk , Oh Yunseok , Jeon Junhyeon , Baek Dong-Heon , Kim Dong Hee , Srikulnath Kornsorn , Han Kyudong
Published: March 2023

Importance of accurate molecular diagnosis and quantification of particular disease-related pathogenic microorganisms is highlighted as an introductory step to prevent and care for diseases. In this study, we designed a primer/probe set for quantitative real-time polymerase chain reaction (qRT-PCR) targeting rgpA gene, known as the specific virulence factor of periodontitis-related pathogenic bacteria ‘Porphyromonas gingivalis’, and evaluated its diagnostic efficiency by detecting and quantifying relative bacterial load of P. gingivalis within saliva samples collected from clinical subjects. As a result of qRT-PCR, we confirmed that relative bacterial load of P. gingivalis was detected and quantified within all samples of positive control and periodontitis groups. On the contrary, negative results were confirmed in both negative control and healthy groups. Additionally, as a result of comparison with next-generation sequencing (NGS)–based 16S metagenome profiling data, we confirmed relative bacterial load of P. gingivalis, which was not identified on bacterial classification table created through 16S microbiome analysis, in qRT-PCR results. It showed that an approach to quantifying specific microorganisms by applying qRT-PCR method could solve microbial misclassification issues at species level of an NGS-based 16S microbiome study. In this respect, we suggest that P. gingivalis–specific primer/probe set introduced in present study has efficient applicability in various oral healthcare industries, including periodontitis-related microbial molecular diagnosis field.
Fast-Acting Sub-perception Spinal Cord Stimulation for a Case of Painful Diabetic Polyneuropathy. Just an Antalgic Treatment or Even a Therapy?
Authors: Amorizzo Ezio , De Sanctis Francesca , Colini Baldeschi Gianni
Published: March 2023

Introduction: Painful diabetic polyneuropathy (P-DPN) occurs in 20% - 30% of diabetic patients. Currently, therapeutic strategies include lifestyle modifications, good glycemic control, and neuropathic pain drugs. Spinal cord stimulation (SCS) has been shown to be successful in patients who have not responded to other treatments. The American Diabetes Association strongly recommends early screening and diagnosis for this condition through clinical tests and nerve conduction study (NCS). In recent years, high-resolution ultrasonography (HRUS) with the analysis of cross-sectional area (CSA) has shown an increasingly important role in detecting changes in the nervous structures, blood vessels, echo, and mobility of the nerve. Cross-sectional area is frequently enlarged in these patients, even those with normal NCS. We aimed to use SCS with fast-acting sub-perception therapy (FAST) modality to treat P-DPN. We also evaluated the CSA of the involved nerves before and after treatment. Case Presentation: A 58-year-old female patient was referred to our hospital in 2020 (Civitavecchia, Italy). She suffered from P-DPN for 3 years and did not respond to conventional medical treatments. Preoperative electromyography (EMG) was negative for radiculopathy, while electroneurography (ENG) showed a reduction in sensory conduction velocity (SCV) in the sural nerve (SN) bilaterally. Clinical tests on perceived pain and quality of life showed high severity. The report was confirmed by HRUS with enlargement of the CSA of the posterior tibial nerve (PTN), external popliteal nerve (EPN), and SN. The patient was successfully subjected to all-in-one SCS implantation in the FAST modality. She obtained immediate pain relief that remained unaltered at the 3-month follow-up. The patient completely discontinued drug therapy. One month after implantation, ENG highlighted an increased SN SCV, and the HRUS of PTN EPN and SN showed a significant reduction in CSA in all 3 nerves involved. Conclusions: Early diagnosis and treatment are crucial in improving the clinical outcome of P-DPN, but there is still no gold standard therapy. Spinal cord stimulation in the new FAST modality was effective in this clinical case. The pain relief was supported by a significant reduction in the CSA of the studied nerves observed on HRUS 1 month after SCS implantation. The results and the improvement of a pathological nervous pattern, albeit with a short follow-up of only 3 months, could suggest not only a symptomatic but perhaps also a therapeutic role of SCS in P-DPN.
Grafomotorické dovednosti
Authors: Šafárová Katarína , Mekyska Jiří , Urbánek Tomáš , Čunek Lukáš , Galáž Zoltán , Mucha Ján , Zvončák Vojtěch , Bednářová Jiřina
Published: March 2023

This book focuses on graphomotor skills, their disorders and brings new possibilities to their diagnosis. The introduction discusses various theories of writing and the development of graphomotor skills and writing. It also defines graphomotor disorders and developmental dysgraphia and offers an overview of diagnostic methods for assessing handwriting disabilities. In the final chapter, the authors present an original approach to diagnosing graphomotor disabilities based on an objective analysis of online handwriting. The resulting “Graphomotor and Handwriting Disabilities Rating Scale” (GHDRS) allows for a detailed assessment of the sources of a child’s difficulties. The book is intended primarily for workers in the school guidance system, especially special educators and psychologists, but also for others interested in graphomotor skills.
Estimación de la Rentabilidad que se genera con la Minería de Criptomonedas y su Implicancia Tributaria en el Paraguay para el año 2022
Authors: González Brítez Verónica Rubí
Published: March 2023

La minería de criptomonedas es posible gracias al internet, el minero conecta un determinado tipo de hardware a la red y descarga el correspondiente software, conformando así un “nodo” y, en forma automática el equipo informático compite contra otros mineros intentando descifrar ciertos algoritmos. El primero que logre resolver el algoritmo, se le permite anexar un nuevo bloque con información a la blockchain y recibir, como “recompensa”, nuevas cripto- monedas. (Zocaro, 2020). Esta novedosa actividad económica tuvo sus inicios en el año 2009, llegando al Paraguay hace unos pocos años. A pesar de no encontrarse reglamentada a nivel nacional, esta actividad económica se lleva a cabo en distintas ciudades del país de acuerdo con lo presentado en distintas publicaciones de los medios de comu- nicación. Por lo expuesto, el propósito del trabajo de investigación se centra en la determinación de una estimación de Impuesto a la Renta que la Administración Tributaria en Paraguay deja de percibir por la actividad de minería de criptomonedas. Utilizando el enfoque del método de investigación cualitativa, con análisis de revisión documental. Así también, se plantea una investigación prospectiva. El cálculo de rentabilidad se realiza con la herramienta web MinerStat, definiendo los siguientes parámetros: modelo de equipo de minería (Bitmain Antminer S19 XP), moneda (dólar americano) y la tarifa de energía eléctrica establecida por la Administración Nacional de Energía (ANDE) según Resolución P/N.° 46984. Tarifa de 0.0082 USD kWh para el cálculo de rentabilidad de 1a máquina Bitmain Antminer S19 XP, tarifa de 0.0066 USD kWh para el cálculo de rentabilidad de 50 máquinas Bitmain Antminer S19 XP. En base a los cálculos de rentabilidad obtenidos con MinerStat, se presume que, con 50 equipos de minería, en un periodo de 12 meses, considerando los costos de energía eléctrica y servicio de internet, el valor estimado de Impuesto a la Renta que la Administración Tributaria deja de percibir asciende a la suma de G 96.965.475.
An exploratory prospective study of the factors associated with adverse health outcomes in older adults living with HIV
Authors: Margarita Ramírez , Ana Palmar-Santos , Matilde Sánchez-Conde , Azucena Pedraz-Marcos , Fátima Brañas
Published: March 2023

Objective This study examines the clinical and sociodemographic factors associated with adverse health outcomes (falls, emergency room visits, hospital admissions and death) in a cohort of patients older than 55 years with HIV infection. Methods It is an exploratory prospective study with four years follow-up. People with HIV infection followed in the infectious diseases consultation unit of two hospitals in Madrid were included. Sociodemographic data and clinical variables were collected. The functional, mental, and social situations of the participants were assessed. Patient clinical histories were reviewed to gather data on the number of falls, visits to emergency departments and hospital admissions during the period studied. Results One hundred seventeen patients with a mean age of 61,4 (SD 6,6) years and a median follow-up of 47 months(35 to 50) were included. Of these subjects, 25% had depressive symptoms, and 10% had some degree of cognitive impairment at the baseline visit. The recorded frequencies were: falls 7,7%, visits to the emergency room 53%, hospital admission 33,3% and deaths 2,6%. Depressive symptoms were associated with falls and emergency room visits in the univariate analysis. The factors associated with hospital admission were having acquired the infection through intravenous drug use, frailty and being under 65 years of age. Multivariate analysis was conducted for the hospital admissions outcome, with the variables showing p < 0,07 in the univariate analysis, none of which reached statistical significance. Conclusions Depression screening and cognitive evaluation should be done systematically in this population group. More studies with more patients and longer follow-up times are necessary.
Factor analysis of food security in Kazakhstan
Authors: Temirova G. K. , Sultanaev A. A.
Published: March 2023

The country's food security is an important component of the national security system and, as such, characterizes the economic stability and political independence of the state, its ability to provide for the elementary primary needs of its citizens without prejudice to national state interests. The purpose of the study based on factor analysis is to provide the state of the food market and justify the economic opportunities for ensuring food security in Kazakhstan. Food supply of the population remains an urgent problem of the socio-economic development of the regions of Kazakhstan, since it must guarantee the population food independence, the availability of food from domestic sources at scientifically sound standards, affordable prices and the amount necessary to ensure normal life. Analyzing the state of the food market and choosing among them the most optimal for providing the population with food products and making effective management decisions is an important tasks in creating a strategy for ensuring the country's food security. Scientific research was carried out on the basis of the AEC management sectors using statistical materials (statistical data of the Republic of Kazakhstan), and general scientific and private research methods. Based on the comparative Bureau of the National ASPR RK analysis, the main trends in the development of food security in Kazakhstan were identified. In this research work, predictive methods were also used to determine the prospects for the development of food security in Kazakhstan. The study presents the results of the consumption of certain types of agricultural products per capita. The national norms of food consumption were compared with the physiological norms of consumption, and the regional aspect of average per capita consumption was considered in terms of the minimum and maximum volume of consumption. Considering the specialization of the regions, the existing territorial organization of the agro-industrial complex, the optimization of raw material zones of processing enterprises, the emerging shifts in food self-sufficiency, a positive trend in food consumption in the present and future is given. This article provides recommendations for ensuring safe and quality food security.
The impact of organic products on the population health
Authors: Siximbayeva G. T. , Akhtayeva S. M. , Shayakhmetova K. O. , Shynybayev A. A.
Published: March 2023

The issue of compliance with the principles of organic production becomes relevant: the exclusion of the use of GMO products, their derivatives, chemically synthesized substances, dyes, preservatives, flavors, etc. additives are all to improve the population quality of life and health. The purpose: to assess the current state of the population quality of life and the organic products market, to establish a link between the quality of life and consumption of organic products. The main objectives: to reveal the conditions for the development of organic production in Kazakhstan; to establish the dependence of the level of public health quality on healthy organic products; to identify ways to improve the quality of food and meet the needs of Kazakhstan population in organic products. The object of the study is the organic products market of world's main producers. The subject is the impact of organic products on the population health. Research methods. The authors of the article used such methods as economic and statistical and graphical methods. Results. The study analyzes the dynamics of the quality of life index, the health index, trade turnover and producers of organic products. Conclusion. Based on the conducted research, it is necessary: to intensify work with the population to explain the benefits of organic products to maintain the physical health of each family member; to continue work on stimulating producers of organic products to enter a wide domestic and foreign market; to settle the issue of regulatory support for organic production (standardization, certification of products).
Relevansi Kausal Motivasi Kerja pada Komitmen Organisasional Karyawan Hotel Betha Subang
Authors: Sihombing Hotmaida , Setiawan Rony
Published: March 2023

After the pandemic, the service industry in the hotel sector has started to show its resilience again. The quality of hotel services provided depends on the performance of the employees who provide them. Betha is one of the leading hotels in Subang which shows an employee retention rate of more than 85% in the midst of rampant layoffs that occur. Organizational commitment has a very crucial role for the stability and progress of the company, which is caused by employee motivation. Through the interview process, literature review, and a questionnaire with 25 items of questions, this research aims to confirm the causality of motivation on organizational commitment, both in terms of variables and dimensions. By involving all employees who work at Hotel Betha Subang, this research proves that motivation affects affective commitment, continuance commitment, normative commitment, and organizational commitment. Researchers hope that this research can be a theoretical and practical inspiration for the development of knowledge and the creation of positive work.
Electrochemical reduction of CO2 to CO on Zn electrodes prepared by electrodeposition method
Authors:   , Poonbun Krongkwan
Published: March 2023

In this work, the effect of substrates including Cu and Ti on the catalytic activity of Zn electrocatalysts prepared by electrodeposition method was investigated in the electrochemical reduction of CO2 (CO2ER). As analyzed by SEM-EDX and XRD results, it indicated that the different substrates did not have any influence on the morphologies of catalysts and the conductivity of substrate was the main factor on the CO2ER performance. The effect of Zn precursor concentration in the range of 0.025 M to 0.4 M was further studied on the characteristics and the activity of Zn/Cu catalysts in the CO2ER. . At low concentrations of Zn precursor (0.025M and 0.05M), the catalysts exhibited the same dendrite structure. Increasing Zn concentration to 0.1 M, the morphology changed into mossy structure with the highest amount of Zn deposited. On the contrary, at higher concentration of Zn precursor than 0.1M, lower amount of Zn was deposited because of the faster H2 evolution rate. In addition, larger amount of oxide layer was covered on Zn surface, which impeded the performances of the CO2ER. Among the prepared catalysts, the best catalyst was 0.05 Zn/Cu, which provided the highest faradaic efficiency (FE) of CO due probably to the highest amount of catalytic active Zn (101) facet. Finally, comparing the use of 0.05Zn/Cu electrocatalysts in aqueous electrolyte and ionic liquid, the results showed that ionic liquid  decreased the applied potential in the CO2ER but the Zn catalyst was not stable and then, fell off  the catalyst surface. In contrast, the Zn catalyst in aqueous solution could re-deposit on the substrate after CO2ER. The highest %FE of CO was achieved in 0.1 M KHCO3. Moreover, 0.05Zn/Cu provided the nearly 1.5 times higher %FE of CO than Zn foil, indicating that the dendrite structure enhanced the CO2ER activity.
Methanol synthesis via hydrogenation of mixed CO/CO2 over Mn modified CU/ZNO/AL2O3 catalyst
Authors:   , Tunyasitikun Papawin
Published: March 2023

The purposes of this study are to investigate the methanol synthesis by using mixed CO/CO2 hydrogenation on Mn modified Cu/ZnO/Al2O3 catalyst which is prepared by the co-precipitation method and to investigate the overall energy consumption of methanol synthesis based on experimental results through the simulation process using Aspen Plus V.9. The improvement of catalytic activity is performed by a continuous fixed bed microreactor at 250°C under atmospheric pressure for 5 hours on the stream through hydrogenation of different feed composition of CO2/H2, CO/H2, and CO/CO2/H2, and 24000 ml/gcat∙h of GHSV. The physical and chemical properties of the catalysts are measured by various catalyst characterization techniques including N2 adsorption, CO-Chemisorption, SEM-EDX, ICP-MS, XRD, XPS, H2-TPR, NH3-TPD, and CO2-TPD. The experimental results indicate that CZA-Mn catalyst has better catalytic activity than CZA catalyst that can be observed from the increase of methanol space time yield that is corresponding with the results of catalyst characterization. Manganese added on the catalyst indicates that active sites have well-dispersion that help to increase the dissociation rate of hydrogen molecules and to improve spillover. Moreover, the addition of manganese on the catalyst not only facilitate the reduction of CuO, but also enhance the number of total basic sites and the strong adsorption of CO2 due to the shift of moderate basic site to strong basic site and increases the weak acid sites that help to improve the selectivity of methanol. For the overall energy consumption in methanol synthesis investigation, it is found that the amount of CO2 in the reactant is significant to the overall energy consumption and energy consumption of 1 mol-methanol synthesis. Thus, the results indicate CO/CO2/H2 feed with 1:1:2 composition can increase the energy consumption of 1 mol-methanol synthesis to 3.6 and 5.1 times of CO hydrogenation.
Preparation and characterization of nanopaper from regenerated cellulose
Authors:   , Paijit Nattorn
Published: March 2023

Cellulose nanopapers (RCNP) were prepared from regenerated cellulose (RC) via the solvent casting method. RC was prepared by dissolution of bleached eucalyptus cellulose pulp (BEP) with 85% H3PO4 at -20oC. Water was applied as anti-solvent in the regenerated process. Effects of storage time after dissolution on fiber solubility were investigated at 0, 20, 40, 60 min, 1, and 2 days. ATR FT-IR spectra and crystalline index proved that regenerated cellulose was obtained. The crystalline index of the fiber became stable at 60 min, indicating the fibers were completely dissolved at 60 min. The results from thermogravimetric analysis showed that after the main degradation process, the remained char residue at 600 °C was close to 13.6% or 24.9% for original BEP or RCNP-0 min, respectively. The formation of phosphate groups on fiber surface caused increasing in remained char residue, indicating the RCNP had flame resistance property. Mechanical properties of RCNP were constant at 60 min of storage time, corresponding to the complete dissolution of fiber. Lastly, RCNP-60 min was embedded with zinc oxide nanoparticles. The UV-vis transmittance spectra of ZnO/cellulose nanopaper were investigated under a wavelength range of 300-400 nm. It was found that the 3 %wt. ZnO/cellulose nanopaper had a UV transmission value equal to 0.46%, indicating the potential usage of the cellulose nanopaper filled ZnO nanoparticles for UV-blocking films.
Selective hydrogenation of acetophenone to 1-phenylethanol on Pt/ TiO2 catalysts prepared by pulsed dc magnetron sputtering
Authors:   , Ditsataporncharoen Khunarnon
Published: March 2023

1-Phenylethanol (PHE) is a high-value chemical with various applications in fragrance and pharmaceutical industries. It is extensively used as strawberry fragrance additives in yogurts and chewing gums and an intermediate of anti-inflammatory drugs such as Ibuprofen. In this study, selective hydrogenation of acetophenone (AP) to PHE was investigated using platinum catalysts supported on different types of titanium dioxide including PC500 (pure anatase) and P25 (anatase mixed rutile). Pt was deposited on the titanium dioxide supports by pulsed direct current magnetron sputtering (PDC-MSD) method with deposition time spent on Pt coating at 3, 6, and 9 minutes. For comparison purposes, Pt/TiO2 catalysts were also prepared by incipient wetness impregnation method with similar Pt loadings (%). The characteristics and catalyst properties were analyzed by XRD, N2-physisorption, XPS, ICP-OES, TEM, CO-chemisorption, and H2-TPR. Hydrogenation of AP was carried out in a batch reactor at the pressure of 1 bar H2 and the temperature of 80oC for 2 hours using 2-propanol as the solvent. It was found that increasing sputtering time resulted in a larger average Pt particle size deposited on the TiO2 surface and increased amount of Pt loading (%). For any sputtering time used, platinum catalysts on PC500 TiO2 support provided higher selectivity of PHE than on P25 because of higher atomic ratio of Pt/Ti on the catalyst surfaces and higher Pt dispersion (%) on the PC500 TiO2 surface. However, increasing Pt loading (%) may also catalyze the hydrogenolysis of PHE to ethylbenzene (EB), resulting in lower PHE product. Moreover, at the reaction temperature of 80 oC could promote the hydrogenation of AP to PHE and inhibit hydrogenolysis of PHE to EB in 2-propanol solvent.
Sodium doping effects on properties of CZTS thin filmsfabricated by sol-gel convective deposition technique
Authors:   , Sukchoy Orawan
Published: March 2023

Cu2ZnSnS4 (CZTS) is an interesting candidate for thin-film solar cell applications due to its availability and attractive properties (energy band gap of 1.5 eV and high absorption coefficient). However, CZTS solar cell performance is limited because of the defect formation from small grain size, pinholes, rough surface, and negative defects in CZTS such as CuZn. One of the most possible ways to reduce these negative defects, and to increase solar cell performance is by doping with sodium. In this work, CZTS films were synthesized by sol-gel convective deposition technique and Na was doped in CZTS film using 2 different methods: 1) 5, 10, and 15 mg/ml of NaCl solutions were deposited on CZTS thin-film and 2) 5%, 10%, and 15% of NaCl were mixed with CZTS solution before deposited on a substrate. It was found from the results that Na-doped CZTS thin-films obtained from both methods could improve the grain size, enhance film compactness, reduce the grain boundaries and surface roughness. The energy band gap of the CZTS films was in range of 1.5-1.6 eV which was suitable for the solar cell application. Further investigation revealed that the VOC, JSC, and FF of Na-doped CZTS thin-film solar cells were improved accordingly, leading to better solar cell performance. The solar cell efficiency was increased from 0.04% (undoped CZTS thin-film) to 0.18% (15 mg/ml of NaCl solution doped on the CZTS-thin-film).
Review on 5G Network Advanced techniques
Authors:   Medical Instrumentation Technical Engineering, Al-Esraa University College. Baghdad, Iraq., Hussein Zaid Khudhur
Published: March 2023

Currently, mobile technology is playing a crucial role and is evolving very quickly. With the rise in demand comes a larger user experience and a greater date rate. LTE-Advanced supports higher data speeds, greater coverage with throughputs, with shorter transmission and reception times, all of that improve user experience. A performance-based debate with comparison to the current 5G Network Advanced network is being explored after examining several papers. This is a comparison of measuring parameters, techniques, benefits, and limitations.
Risk Factors of COVID-19 Infection and the Effectiveness of Pre-flight Screening from an Investigation of an International Flight to Thailand, 2020
Authors: Sawangsrisutikul Kanokkarn , Chuxnum Teerasak , Promduangsi Pitiphon , Saritapirak Nipapan , Suphanchaimat Rapeepong
Published: March 2023

Thailand implemented pre-flight screening (reverse transcription polymerase chain reaction test for SARS-CoV-2 within 72 hours before departure) to mitigate the importation of COVID-19 during the early phase of the pandemic. We conducted a cross-sectional study to identify factors associated with COVID-19 infection and assess the effectiveness of pre-flight screening among passengers on an India-to-Thailand flight in August 2020. Logistic regression was used to determine the association between the possession of COVID-Free Certificate (CFC) and a positive SARS-CoV-2 test result upon arrival. Twenty-three of 209 passengers (11.0%) had a positive SARS-CoV-2 test. Among 142 CFC holders, 10 (7.0%) tested positive, while 13 of 58 (22.4%) passengers without a CFC tested positive upon arrival (p-value 0.003), equivalent to a case reduction of 68.8%. CFC possession yielded an adjusted odds ratio (AOR) of 0.04 (95% CI 0.01–0.44). Being a massage therapist (AOR 17.04, 95% CI 2.37–122.37) and using public transportation in India (AOR 5.30, 95% CI 1.49–18.77) were significantly associated with COVID-19 infection. With the unavailability of vaccines, people should be mindful of taking local public transportation during a pandemic, particularly when planning to travel abroad. Pre-flight screening is an effective method in reducing positive cases from international travel.
ANALISIS PROSES BERPIKIR PROBABILISTIK SISWA DITINJAU DARI GAYA KOGNITIF FIELD DEPENDENT-FIELD INDEPENDENT
Authors: Ahmad Abdan Matin
Published: March 2023

Penelitian ini bertujuan untuk mengeksplorasi proses berpikir probabilistik siswa gaya kognitif field dependent dan field independent. Penelitian ini menggunakan pendekatan kualitatif dengan metode deskriptif eksploratif. Subjek dipilih menggunakan instrumen tes GEFT. Akurasi data dalam penelitian diperoleh menggunakan instrumen tes pemecahan masalah probabilistik, dan wawancara dengan responden. Teknik analisis data dalam penelitian ini menggunakan model Miles dan Huberman dengan aktifitas yang dilakukan meliputi reduksi data, penyajian data, dan penarikan kesimpulan. Hasil penelitian ini menunjukkan bahwa proses berpikir probabilistik subjek field dependent dalam menyelesaikan masalah cenderung pada kategori level berpikir subjektif dimana pemikiran subjek terfokus pada aspek-aspek yang tidak relevan dan sebagian besar terikat pada alasan subjektif. Proses berpikir probabilistik subjek field independent dalam menyelesaikan masalah cenderung pada kategori level berpikir kuantitatif informal dimana subjek menunjukkan penggunaan strategi generatif dan menyelaraskan pemikiran mereka tentang ruang sampel. Subjek dalam menentukan besarnya kemungkinan terjadinya suatu kejadian yaitu dengan menggunakan perbandingan, tetapi sebagian pemikiran subjek masih bersifat naive dan seringkali berubah dalam mengkuantifikasi peluang.