bluuebunny/crossref_metadata_2025 huggingface dataset:
Users' Continuance Intention to Use a Mobile Application
Authors: Ge Jun , Kang Mincheol , Haile Tegegne Tesfaye
Published: May 2021

This study examines factors that influence users' continuance intention to use a mobile application. There exist few empirical researches focused solely on examining factors influencing users' continuance intention of using mobile applications. An empirical analysis is conducted with data collected from 431 smartphone users in China. Two application personality dimensions (i.e., enthusiasm and unpleasantness) and one user perception dimension (i.e., aesthetics) were found to have no significant impact on application continuance intention while genuineness and sophistication from application personality dimensions and ease of use and perceived control from user perception dimensions have a positive significant influence. This study provides an insight to application developers on how to improve the quality and usability of mobile applications and enhance continues use.
Cockpit Social Infrastructure
Authors: Degkwitz Till , Schulz Daniel , Noennig Jörg Rainer
Published: May 2021

Web-based geographic information systems (GIS) and planning support systems are widely adopted as digital tools to support planning practices. The respective solutions tend to be isolated implementations aimed at a single planning purpose due to the specific requirement concerning their data, methodology, involved stakeholders, etc. With data platforms, GIS infrastructures, and the possibility to use web-based software that relies on open standards, creating a planning support infrastructure is more feasible than ever. Such infrastructures can create opportunities for governments to draw on existing systems and create the potential to improve planning practices through enhanced information and analysis. This paper describes the development of the cockpit social infrastructure, a planning application that serves as an interface between Hamburg's urban data platform and the municipal planners of social infrastructure. Its unique institutional setting as well as its reliance on an open standard software architecture make it a unique case for potential planning support infrastructure.
Th17 Cells Contribute to the Pathology of Autoimmune Hypophysitis
Authors: Chalan Paulina , Thomas Nithya , Caturegli Patrizio
Published: May 2021

Autoimmune hypophysitis is classified as primary if its origin is idiopathic and secondary if it develops as a consequence of treatment with immune checkpoint inhibitors. Expanding use of immunotherapy has been paralleled by the increasing hypophysitis prevalence. However, understanding of the immune responses driving the disease remains limited. Using a mouse model of primary hypophysitis, we have identified CD4+ T lymphocytes to be the main pituitary-infiltrating immune cell population. Functional analysis showed that they display a Th17 and Th1/Th17 phenotype. To examine involvement of proinflammatory Th1, Th17, and Th1/17 subsets in hypophysitis, we have isolated RNA from the formalin-fixed paraffin-embedded pituitary specimens from 16 hypophysitis patients (three of whom had hypophysitis secondary to immune checkpoint inhibitors), 10 patients with adenoma, and 23 normal pituitaries obtained at autopsy. Transcript levels of IFN-γ, IL-17A, IL-4, IL-10, TGF-β, CD4, CD8α, and class II MHC transactivator were analyzed by the reverse transcription–quantitative PCR (RT-qPCR). Pituitary glands of patients with hypophysitis showed significantly higher IL-17A, CD4, and class II MHC transactivator mRNA levels compared with adenoma and normal pituitaries. All three secondary hypophysitis patients showed detectable IL-17A levels, but other cytokines were not detected in their pituitaries. Levels of IFN-γ, IL-4, IL-10, and TGF-β did not differ between the groups. TGF-β transcript was found in significantly fewer hypophysitis pituitaries (2 out of 16) compared with adenoma (7 out of 10) and normal pituitaries (11 out of 23). Presence of TGF-β in two hypophysitis patients was associated with significantly lower IL-17A mRNA levels compared with hypophysitis patients with no detectable TGF-β (p = 0.03).
The Roles of Type 2 Cytotoxic T Cells in Inflammation, Tissue Remodeling, and Prostaglandin (PG) D2 Production Are Attenuated by PGD2 Receptor 2 Antagonism
Authors: Chen Wentao , Luo Jian , Ye Yuan , Hoyle Ryan , Liu Wei , Borst Rowie , Kazani Shamsah , Shikatani Eric A. , Erpenbeck Veit J. , Pavord Ian D. , Klenerman Paul , Sandham David A. , Xue Luzheng
Published: May 2021

Human type 2 cytotoxic T (Tc2) cells are enriched in severe eosinophilic asthma and can contribute to airway eosinophilia. PGD2 and its receptor PGD2 receptor 2 (DP2) play important roles in Tc2 cell activation, including migration, cytokine production, and survival. In this study, we revealed novel, to our knowledge, functions of the PGD2/DP2 axis in Tc2 cells to induce tissue-remodeling effects and IgE-independent PGD2 autocrine production. PGD2 upregulated the expression of tissue-remodeling genes in Tc2 cells that enhanced the fibroblast proliferation and protein production required for tissue repair and myofibroblast differentiation. PGD2 stimulated Tc2 cells to produce PGD2 using the routine PGD2 synthesis pathway, which also contributed to TCR-dependent PGD2 production in Tc2 cells. Using fevipiprant, a specific DP2 antagonist, we demonstrated that competitive inhibition of DP2 not only completely blocked the cell migration, adhesion, proinflammatory cytokine production, and survival of Tc2 cells triggered by PGD2 but also attenuated the tissue-remodeling effects and autocrine/paracrine PGD2 production in Tc2 induced by PGD2 and other stimulators. These findings further confirmed the anti-inflammatory effect of fevipiprant and provided a better understanding of the role of Tc2 cells in the pathogenesis of asthma.
Burden, Disability and Public Health Importance of Headache Disorders in India
Authors: Krishnan Anand , Chowdhury Debashish
Published: May 2021

Headache disorders, characterized by recurrent headache, are among the most common disorders of the nervous system. The aim of this study was to document epidemiological and economic burden due to headache globally and in India and suggest a public health approach to address headache disorders for India. We reviewed the available literature on burden due to headache, its management using a primary health care approach and health system barriers, with special emphasis on India. Globally, it has been estimated that prevalence of current headache disorder (symptomatic within last year) among adults is about 50%, around 30% report migraine and headache on 15 or more days every month affects 1.7–4% people. The Global Burden of Disease Study 2016 estimated that migraine caused 45·1 million (95% UI 29·0–62·8) and tension-type headache 7·2 million (95% UI 4·6–10·5) years of life lived with disability. Limited data available in India support such high burden. These studies also indicate high diagnostic and treatment gaps for headache disorders in India. Major challenges in addressing headache disorders effectively in India are low perceived severity, absence of burden data, lack of standard treatment protocols for headache disorders and primary care models for neurological disorders in developing country context. There needs to be a better appreciation of the burden and a public health approach among all stakeholders, if burden of headache disorders is to be addressed effectively in India.
Statistical mechanical models for quantum codes with correlated noise
Authors: Chubb Christopher T. , Flammia Steven T.
Published: May 2021

We give a broad generalisation of the mapping, originally due to Dennis, Kitaev, Landahl, and Preskill, from quantum error correcting codes to statistical mechanical models. We show how the mapping can be extended to arbitrary stabiliser or subsystem codes subject to correlated Pauli noise models, including models of fault tolerance. This mapping connects the error correction threshold of the quantum code to a phase transition in the statistical mechanical model. Thus, any existing method for finding phase transitions, such as Monte Carlo simulations, can be applied to approximate the threshold of any such code, without having to perform optimal decoding. By way of example, we numerically study the threshold of the surface code under mildly correlated bit-flip noise, showing that noise with bunching correlations causes the threshold to drop to

p_{\textup{corr}}=10.04(6)\%

, from its known iid value of

p_{\text{iid}}=10.917(3)\%

. Complementing this, we show that the mapping also allows us to utilise any algorithm which can calculate/approximate partition functions of classical statistical mechanical models to perform optimal/approximately optimal decoding. Specifically, for 2D codes subject to locally correlated noise, we give a linear-time tensor network-based algorithm for approximate optimal decoding which extends the MPS decoder of Bravyi, Suchara and Vargo.
Evaluation of Noise Environment and Noise Mapping with ArcGIS in Chittagong City, Bangladesh
Authors: Aziz Md. Abdul , Karim Ahasanul , Masum Md. Mehedi Hassan , Newaz Kazi Kader
Published: May 2021

Objectives : Noise pollution in Chittagong City of Bangladesh is a big concern because of huge population growth and urbanization. The objective of the study was to evaluate and mapping the noise levels in twelve locations of this city at different periods.Methods : Noise level data were collected at various locations by a precision grade sound level meter and the noise pollution parameters (Lmin, LAeq,2h and Lmax) were calculated. Furthermore, the noise pollution maps of Chittagong City were developed using geographical information system to address the locations which are prone to the environmental hazards.Results and discussion : The study revealed that the average noise levels were 64.6, 76.9, and 75.5 dB(A) for residential, commercial and silence zones, respectively. The interpolated noise maps showed that noise environment of this city was unsatisfactory, especially, in the areas of New Market, Nasirabad, and Bawa School & College were exposed to high noise pollutions. The afternoon and evening periods were experiencing higher noise pollution in the commercial and silence zones than the morning period of the day.Conclusions : The study suggests that the noise levels are above the acceptable limit and hence urgent measures should be taken into consideration to control the level of noise pollution in the city.
Optimization of Fruit Garbage Enzymes Requirements for Biocatalytic Remediation of Used Motor Oil-Contaminated Soil
Authors: Bulai Indo Sabo , Haruna Haruna , Umar Yuguda Abubakar , Sabo Ahmed
Published: May 2021

Objectives : In this research work, we investigated the biocatalytic potency of orange and watermelon garbage enzymes in the remediation of used motor oil-contaminated soils. The optimization of the biocatalytic remediation process was evaluated through D-optimal of response surface methodology (RSM) design of design expert.Methods : The optimization of the biocatalytic process was evaluated with D-optimal model of response surface methodology (RSM) design, where input variables in the system were garbage enzymes solutions of orange and watermelon peels (biocatalysts) and two different pollution levels. The two levels of pollution factor considered were 5 and 10 % (w/w) oil pollution levels and used as independent variables; while the response of the system was in oil and grease (O&G) removal as dependent variables that were monitored under 6-week remediation process.Results and Discussion : The result indicated that the model was highly significant and good predictors of the response fate of oil and grease (O&G) removal by the orange and watermelon garbage enzymes, as indicated by their coefficients of determination: R2 = 0.90627 and R2 = 0.88365 at p < 0.05, respectively. Therefore, it was observed from the numerical optimization carried out that 54.2 and 53.8 % O&G removal was achieved with orange garbage enzymes at 5 and 10 % pollution level respectively after six weeks. On the other hand, 54.7 and 55.2 % O&G removal was accomplished with the same pollution level respectively under the influence of watermelon garbage enzymes after six weeks of the remediation process.Conclusion : In response to what was achieved in this research work, the enzymes produced from the orange and watermelon garbage removed oil in terms of O&G from used motor oil-contaminated soils biocatalytically and hence could be applied in the remediation of oil contaminated soils.
Comparison of Coal-, Coconut-, and Wood-Based Activated Carbons for Removal of Organic Matters in Wastewater Treatment Plant Effluent
Authors: Kwon Eunkwang , Park Soohyung , Lee Wontae
Published: May 2021

Objectives : This study investigated the removal of dissolved organic materials by coal-, coconut-, and wood-based activated carbons to assess the addition of an activated carbon process to a publicly owned treatment works (POTW).Methods : We assessed the removal of total organic carbon (TOC) by each process in the POTW, and examined the removal of TOC and UVA254 upon adding different amounts of coal-, coconut- and wood-based activated carbons (50, 100, 200, 300, and 400 mg/L) with various contact time (10, 20, 30, 60, 120 min).Results and Discussion : Approximately 80% of TOC was removed throughout the POTW compared to the influent. The activated carbon adsorption tests of coagulated wastewater revealed that the removal rate of TOC and UVA254 from coal-based activated carbon was higher than those of coconut-based and wood-based activated carbons. The removal rate of dissolved organic materials was highest in ozone treated wastewater in all types of activated carbons, followed by ultraviolet disinfected wastewater and coagulated wastewater.Conclusions : It was possible to remove an additional 35-55% of dissolved organic materials upon addition of activated carbon to the treated wastewater although the removal depends on the material of the activated carbon, the injection amount, and the contact time. If an activated carbon process is adopted to the POTW, it can meet the effluent water quality standards (TOC).
A Study on the Control of Attached Algae by Installing the Drainage Cover Device for the Final Sedimentation of Sewage Treatment Plant
Authors: Lim Sun Whae , Jang Cheol Hyeon , Ryu Byong Ro , Lee Yong Soon
Published: May 2021

Objectives : Adherent algae which are generated in the final sedimentation weir of the sewage treatment plant and the drainage channel, affect the quality of the final effluent water, and it has bad aesthetic effect due to fomation of flcok floating in the sedimentation tank. Therefore, the purpose of this study is prevention of the growth of adherent algae in advance by installing circular cover on the final sedimentation weir and drainage channels.Methods : In this study, we compared the growth pattern of adhered algae on weir and drainage channels before and after installation of circular cover at the final sedimentation weir and drainage channel of the sewage treatment plant. In addition, to identity species of attached algaem microscopic observation was applied, and ch-a concentration was analyzed to confirm the quality of the final effluent water.Results and Discussion : Then, we compared the results before and after installation of cover to check adhesion status of algae on the surface of final sedimentation drain. In case without cover, it was confirmed by observing the growth of attached algae under normal condition with air and photosynthetic reaction, and in case with cover, it was compared with opening after a certain period of time after installation of the drainage cover. As a result of the comparison, it was confirmed that a lot of attached algae occurred in the sedimentary weir and the drain. From the above results, the occurrence of final sedimentation algae is not only affected by the material and season of the drainage, but also after the formation a cluster by algae that have strong adhesion force, and then the microbial species contained in the effluent build secondary attachment and forms colony.Conclusions : In order to prevent the growth of adherent algae, a method of suppression of the growth of adherent algae by inhibition of photosynthesis was studied by installing a cover device on the weir and drain channels. As a result of installing a cover (34,000 thousand won) and reviewing economic feasibility, it can be recovered in 2.6 years, and stainless steel was selected in the view of mechanical stability and facility aging. The final sedimentation water quality increased 99.8% of Ch-a concentration treatment efficiency and 15% of SS sedimentation efficiency by installing a cover.
Current Research Trends on the Effects of Microplastics in Soil Environment Using Earthworms: Mini-Review
Authors: Hur Jaeryung , Jho Eun Hea
Published: May 2021

Objectives : The increase in the amount of plastics used has brought convenience to human life, but has also caused various environmental problems such as problems related to microplastics. Microplastics are defined as small plastic particles with a size of under 5 mm. As of now, research on microplastics has been largely focusing on the marine environment, and studies on microplastics in soil environment are on the rise in very recent years. Thus, the environmental impact of microplastics on the soil environment are insufficient than those on the marine environment, and there is a need for more studies. Therefore, this mini-review attempts to examine the studies on microplastics in soil environment focusing on the studies using earthworms as a test species.Methods : Published studies on microplastics in soil environment were identified by searching Web of Science. The focus of this mini-review was to gather the published articles reporting the effect of microplastics on earthworms in the absence and presence of other chemical contaminants.Results and Discussions : The number of studies evaluating the effect of microplastics in soil are significantly increasing, and earthworms are being mostly used as the test species. Experimental conditions were divided into two types: Single exposure to microplastics and combined exposure to microplastics and other chemicals. In most studies, changes in the biomarkers which are related to oxidation stress of earthworms were confirmed, and direct damage to intestinal tissues of earthworms was also observed. However, in the case of the changes of the biomarkers of earthworms, their patterns were different depending on the experimental conditions (i.e., concentrations of microplastics and chemicals, microplastics size and type, exposure period, etc.). Also, the avoidance behavior of earthworms and the internal accumulation of microplastics and co-existing chemicals were not consistent among the studies. Thus, the effects of microplastics on earthworms are not clear yet, although they seem to have some adverse effects.Conclusions : This study showed that the interest in the impact of microplastics in the soil environment has been increased recently, and earthworms are being used mostly in the studies. Yet, there is no standardized method to study the effect of microplastics on earthworms. Studies so far confirmed that microplastics induced changes in and outside of earthworm bodies. However, due to various experimental conditions, it seemed that consistent results could not be confirmed in those researches. For that reason, this study suggests that standardized research methods for microplastics researches using earthworms as a test species need to be established and need to be applied to further studies.
The Status and Future Development Direction of the Water Industry in Gyeongsangnam-do Province
Authors: Yang Euntae , Kim Hyang-Mi , Jee Ho Bin , Song Seung Hyun , Choi Changkyoo
Published: May 2021

Objectives : The status of the future development direction of the water industry in Gyeongsangnam-do Province have been explored.Methods : The status of the global and domestic water industry and the local water industry in Gyeongsangnamdo was examined through a simple survey analysis and the utilization of related-statistical data and databases. Also, the water industry development strategies of Gyeongsangnam-do were investigated by considering the status and the regional and industrial-based characteristics of Gyeongsangnam-do.Results and Discussion : The global water industry and markets have constantly been grown. The growth of the global water market was forecasted to slow down a bit due to the recent COVID-19 epidemic. On the other hand, it has promoted investment in new areas such as monitoring viruses in sewage. Although the infrastructure of the domestic water industry is well established, there are several problems such as profit structure by simple facility investment, and the poor financial condition and the lack of technical skills of the water industry-related companies. The supply rate of water and sewage in Gyeongsangnam-do was shown lower than the national average due to many islands and mountainous areas. The number of water industry-related companies was found to be about 1300 and Gyeongsangnam-do has quite a large number of water industry-related companies compared to other provinces. By sector, manufacturing industries that produce water-related components such as valves and pumps accounted for more than 60%. By scale based on the number of employees showed that “less than nine” accounted for more than 60%. More than 86% out of the total number of local water-industry companies did not conduct research and development activities. Many companies suffer from difficulties to develop technologies and pioneer new markets owing to the financial burden and lack of professional manpower. To overcome these difficulties and promote the local water industry, strategies such as creating an environment for water industry promotion, establishing a corporate support system, strengthening domestic and foreign networks, and expanding the scale of the domestic market by creating a new water business and finding additional demand by utilizing local characteristics and industrial advantages.Conclusions : Although there are various problems that need to be solved to develop the water industry in Gyeongsangnam-do Province, the Korean government is making efforts to develop the water industry these days. It is necessary to establish and implement effective development strategies and policies for promoting the local water industry in Gyeongsangnam-do Province.
OPPORTUNITY COST APPROACH EVALUATION OF URBAN TRAFFIC CONGESTION COSTS AT ORLU-ROAD BY WAREHOUSE INTERSECTION IN OWERRI METROPOLIS
Authors:   Department of Transport Management Technology, Federal University of Technology, Owerri, Nigeria, Chigozirim Duruaku
Published: May 2021

This study estimated the economic cost of urban traffic congestion trip-time delay and extra vehicle operating cost at the Orlu-road by warehouse intersection in Owerri Metropolis, Imo state, Nigeria. Adopting the survey research design in which both questionnaire and observation of traffic (traffic count) were used as instruments of data collection, the study used the Willingness to Accept (WTA) method to estimate the opportunity cost of traffic congestion trip-time delay as the value which motorist attached to the extra travel time spent in congestion at the intersection. The extra vehicle operating cost was estimated using data obtained from the traffic count, the prevailing fuel cost in Nigeria and mathematical models derived from multiple literatures reviewed in the study. It was found that the aggregate economic cost of traffic congestion trip-time delay and extra fuel cost to the economy of Imo state runs into billions of naira for trip-time delays experienced
Covid-19 Pandemisinde Öğretmenlik
Authors: FİDAN Mustafa
Published: May 2021

Öğretmen, başarılı bir eğitim sisteminde vazgeçilmezdir. Eğitimin değişen bağlamında değişmeyenlerden bir tanesi öğretmenin önemidir. Öğretmen, kendisi, öğrencileri, meslektaşları ve yöneticileri ile karşılıklı sorumluluklar üstlenmekte; değişimle uyumlu bir gelecek oluşturmaya yardımcı olmaktadır. Bazı değişim durumlarında ise öğretmenlerin yardıma ihtiyacı olabilmektedir. Bu çalışma Covid 19 sırasında karşılaşılan sorunlarla baş etmede öğretmenlerin desteklenmesini tartışmaktadır. Çalışma bir literatür taraması niteliğindedir. Çalışma sonucunda, öğretmenlerin güçlendirilmesi gerekliliği esneklik, öğretimsel ve teknolojik olmak üzere üç başlıkta temellendirilmektedir. Eğitimin geleceğinde öğretmen rolünün etkililiği, bu desteklerin geç olmadan sağlanmasına bağlıdır. Öğretmene yapılan yatırım, geleceğe yapılmaktadır.
Extensive skull base osteomyelitis, devastating complication of otitis externa: A case report and review of the literature
Authors:   Doctor, Otorhinolaryngology and Head and Neck surgery department, Ibn Rochd University Hospital, Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco, El Bouhmadi Khadija , Loudghiri Myriam ,   Doctor, Otorhinolaryngology and Head and Neck surgery department, Ibn Rochd University Hospital, Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco, Oukessou Youssef ,   Professor, Otorhinolaryngology and Head and Neck surgery department, Ibn Rochd University Hospital, Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco, Rouadi Sami ,   Professor, Otorhinolaryngology and Head and Neck surgery department, Ibn Rochd University Hospital, Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco, Abada Redallah ,   Professor, Otorhinolaryngology and Head and Neck surgery department, Ibn Rochd University Hospital, Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco, Roubal Mohamed ,   Professor, Otorhinolaryngology and Head and Neck surgery department, Ibn Rochd University Hospital, Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco, Mahtar Mohamed ,   Professor, Otorhinolaryngology and Head and Neck surgery department, Ibn Rochd University Hospital, Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco
Published: May 2021

Skull base osteomyelitis (SBO), also referred to as malignant otitis externa (MOE) in its typical form, is usually a complication of otitis externa and severe uncommon and life-threatening condition requiring early diagnosis and long-term treatment in order to avoid its neurologic sequelae. We report the case of 69 years old female with a history of uncontrolled type 2 diabetes, who presented refractory and chronic right-sided purulent otorrhea with temporal headaches for 6 months, treated with no improvement by multiple attempts of ambulatory empiric therapy. After the appearance of grade III facial palsy and painful swelling in the right periorbital and zygomatic areas, the patient consulted in our department where a CT scan showed massive cortical and trabecular destruction of the right petrous bone and the mastoid extended to the lateral orbital wall, the zygomatic arch and the greater sphenoid wing realising extensive osteomyelitis of the skull base and the lateral face. The treatment was started immediately based on intravenous broad-spectrum antibiotics. Despite aggressive long-term treatment, the patient passed away, underlying the increased SBO morbidity and mortality secondary to delayed diagnosis.
Specificity, definiteness, and l2 article production in the l1 serbian /l2 english linguistic environment
Authors: Velickovic Marta
Published: May 2021

Since little research exists on English L2 article production in the Serbian linguistic environment, the goal of this descriptive study was to identify anytrends in L2 article production,as they pertain to definiteness and specificity (following Ionin et al., 2004). In order to measure this production, four contexts were defined based on the following two semantic features: [±specific] and [±definite]. Considering that Serbian is a language with no article system, and a language that codes specificity (Trenkic 2002, 2004), unlikeEnglish which codes definiteness, combinations of these features should indicate particular contexts that may not only identify any possible patterns in the L2 article production of this segment of the population, but also prove useful as a foundation for further research, and the study of the effects that information of this kind could have on L2 instruction. Based on the findings of previous research, most article substitution and article omission errors are expected in the [+definite, ‐specific] and [‐definite, +specific] contexts. The current results indicated that the sample of participants has a strong tendency of overusing the definite article with indefinites, and to a lesser extent the indefinite article with definites. Furthermore, some unexpected fluctuations were noted in the [+definite +specific] and [‐ definite ‐specific] contexts, indicating that the participants have not yet consistently adopted either the category definiteness or specificity.
African Universities: Problems, COVID-19 & Efforts
Authors: Rios-Campos Carlos , Trujillo Jury Yesenia Aquino , Torres Antero Alexander Cabrera , Zapater Janeth Leticia Mora , Macias Patricia Mercedes Tapia , Malca María Raquel Maxe , Ramírez Italo Maldonado
Published: May 2021

It is necessary to know the state of the Universities in Latin America. The general objective was determine the situation of African Universities: Problems, COVID-19 & Efforts. Methodology, in this research, 39 documents have been selected, carried out in the period 2016 - 2021; including: scientific articles, review articles and information from websites of recognized organizations. The keywords used in the searches were: African universities, African higher education, African universities COVID-19.  Results, Universities in Africa receive inadequate funding, while maintenance costs rise; the Covid-19 pandemic had already had an impact on normal university expenditure and in short, the vision is to create world-class universities, based on African models and solutions. Conclusions, during the pandemic, African universities have closed their doors and due to the lack of technological resources and Internet access for students, classes cannot be taught properly.
Satisfación del estudiante de eduación superior. Caso instituto tecnológico inan extensión girón
Authors: Varela Ramón Edecio Pineda , Riascos Mariela Fernanda Ortega , Pastuizaca Elizabeth Alexandra Girón , Robles César Gabriel Perero
Published: May 2021

El presente estudio tiene como propósito describir la percepción que tienen los estudiantes del INAN sobre su satisfacción con la educación y servicios que reciben en esta casa de estudios, además establecer posibles relaciones entre los elementos que componen la satisfacción del estudiante de educación superior. De esta manera, se llevó a cabo el estudio de caso tomando como fundamento teórico los aportes de Gento y Vivas (2003). El estudio se enmarca en el paradigma cuantitativo, con un diseño no experimental con modalidad de campo. La técnica aplicada fue la encuesta y el instrumento un cuestionario con cinco opciones de respuesta. La población objeto de estudio fue de 109 sujetos pertenecientes a las diferentes carreras que ofrece la institución. El análisis de los datos tanto a nivel descriptivo como inferencial se realizó haciendo uso de una hoja de cálculo Excel del paquete de office y el software SPSS 24. Posteriormente se realizó un análisis inferencial del estudio por medio de una prueba de correlación que permitió establecer la relación o asociación entre las dimensiones del modelo El SEUE. Los hallazgos encontrados revelan que los estudiantes muestran insatisfacción en aspectos referidos a las condiciones básicas de infraestructura y servicios de la institución. Por otro lado, se destacan índices de satisfacción por la formación integral y profesional que reciben en la institución. Finalmente se menciona que el estudio permitió identificar relaciones entre diferentes dimensiones que conforman el modelo y la satisfacción por la pertenencia a la institución al grupo de clase.
Language acquisition and educational inclusion
Authors: Fontoura Cláudia Monserrat Rosa de Oliveira , De Oliveira Maria do Socorro Fortes , Maia Maria Vitoria Campos Mamede
Published: May 2021

This research deals with the language acquisition and the educational inclusion of multiple disabled blind people. The aim was to analyze how three instruments, created so that early childhood educators of the Benjamin Constant Institute could help oral communication and inclusion of blind students with multiple disabilities. The qualitative research, of the ethnographic type, had as subjects two adolescents. The analysis of the results used the bardinian method and pointed out the development of language and interaction between the pairs, allowing the inclusion in a regular classroom.
Professional Pathways of Educators of Educators. An Argentine-French study on identity, recognition and professionalization with an impact on employability
Authors: Aparicio Miriam , Nuñez Alyson
Published: May 2021

Researchers around the world analyze the pathways of university educators and educators from Institutes of Teacher Formation, pathways which are conditioned by history and marked by the influence of context and the abrupt changes which have taken place recently. All of this together affects both teacher identity and employability. Our sample was made up of teachers from different levels, institutions, environments, provinces and from three different countries. In this work, we will compare findings from Institutes of Teacher Formation (IFD) in Argentina (Cuyo region) with those of institutes in France (IUFM from East Paris–Créteuil, France). This will allow us to capture contextual differences as they affect the level of objective achievement and satisfaction. The model includes base, sociocultural, psychosocial, organizational and structural factors. Our methodology was quanti-qualitative (lexicometric analysis and interviews). This allowed us to understand the central issue that each study program itself has and how it relates to the working world, as well as the distances between the prescribed world and the real world of these actors. We also applied a semi-structured survey with open-ended answers, which permitted us to utilize the technique of hierarchical evocation. The results show shared representations of teachers at the tertiary level in Argentina and France, illustrating strengths and weaknesses particularly regarding weakening recognition and global devaluation of teachers. The results will be presented to decision makers in education with aims to implement programs of Professionalization which could overcome the aspects that today fracture identities and create upset among teachers, impacting their employability.
Affective analfabeism in adolescents and their consequences for organizations
Authors: Dos Passo Kelly Danelli , Schadd Marcia Maria , Durante Marisa Claudia Jacometo , Foletto Paulo Renato
Published: May 2021

Affectivity and love can build a relationship, where, through their development, one can learn the art of living together as brothers. The overall objective was to identify what consequences affective illiteracy causes for organizations. A total of 2,100 adolescents aged 15 to 17 participated. The results point to 23% of adolescents who can not feel or develop all the aspects necessary to be affective and as a consequence have a positive interpersonal relationship. It is considered that the posture of adolescents inserted in the context of affective illiteracy will influence the coexistence with the other, making difficult the work in team and the communication.
La salud sexual y reproductiva de los estudiantes de nivel preparatoria: Un marco de análisis para la intervención de enfermería en la comunidad
Authors: Madrid Guillermina García , Tochihuitl Maricarmen Moreno , Ovando María Laura Méndez , Vázquez Jorge Antonio Ramos , Ramírez Gisela Ortiz , Gómez Alí de León , Rivera Carmen Cruz , Rivera Rayo Cruz
Published: May 2021

En el marco del Cuidado de la Salud Familiar patrocinado por el Consejo Internacional de Enfermería (CIE, 2002) y respaldado en México por el Programa "Escuela Saludable" de la Secretaría de Salud (S. S., 2010), el estudio del funcionamiento familiar, es un indicador elemental a realizar en las escuelas a los estudiantes, debido a su relación con el rendimiento escolar. Por ello, el objetivo del trabajo fue identificar cómo perciben el funcionamiento de sus familias los estudiantes de nivel preparatoria de una universidad pública de la ciudad de Puebla, México. Se trabajó con 216 estudiantes seleccionados aleatoriamente a quienes se les aplicó la Escala de Efectividad en el Funcionamiento Familiar de la Dra. Ma. Louise Friedemann. La edad de los estudiantes osciló entre los 13 y 18 años, las familias se caracterizaron porque el 71.4% son de tipo nuclear, el 40.8% tiene un promedio de 5 a 6 integrantes, el 60.6% es de una comunidad rural, el 80.6% es de un nivel socioeconómico medio y el 82% practica la religión católica. En relación a la percepción del funcionamiento familiar el 44.18% de estudiantes la percibe con un funcionamiento familiar alto, el 18.44% con un funcionamiento familiar medio y el 37.38% con un funcionamiento familiar bajo. La dimensión mantenimiento del sistema relacionada con las costumbres, creencias, hábitos, rutinas, reglas, normas y patrones de crianza tuvo la media más alta 52.29 (DE = 5.66) y la dimensión coherencia que engloba las relaciones familiares, la expresión de lazos de afecto, amor cariño, comunicación, apoyo y convivencia; factores que le dan un sentido de unidad, pertenencia y compromiso a la familia la media más baja 16.39 (DE = 5.27). Se concluye que la percepción del funcionamiento familiar depende de alguna manera de la etapa de vida de las personas encuestadas.
Evaluación ergonòmica del puesto de trabajo de un alimentador de grano en un proceso de molienda de sorgo
Authors: Rosa Omar García de la , Estrada María de Lourdes Olivares , Soto Angelica Ortega , Rojas Guadalupe Ortega , Leonardo Ceciliano Hernández , La Rosa Rosenda García de , Vázquez Adiel García , La Rosa Héctor García de
Published: May 2021

En la investigación se presenta un estudio ergonómico relacionado con la necesidad de modificar las tareas que tradicionalmente se efectúan en la molienda de sorgo, tomando como base la conservación de la salud del jornalero en su puesto de trabajo, para proponer una adaptación de las condiciones laborales de operación, con la innovación de buenas prácticas en el proceso productivo. Inicialmente se realizó la descripción del proceso de producción de harina de sorgo, mismo que se utiliza en la formulación de alimento balanceado para ganado bovino y posteriormente se realizó la evaluación ergonómica el puesto de trabajo del alimentador de grano de sorgo mediante la guía técnica española, método OWAS y método RULA. La metodología empleada correspondió a una investigación de tipo exploratoria y descriptiva para detectar posibles riesgos a los que el trabajador estaba expuesto por la manipulación de cargas.

El nivel de riesgo obtenido de la evaluación, pronosticaba posible daño al sistema musculo-esquelético y se requería aplicar acciones correctivas inmediatamente, puesto que la carga aplicada en estas posturas tiene efectos dañinos sobre el trabajador.

Los resultados obtenidos fueron diversos: Con relación a la Guía Técnica Española fue el hallazgo de una ecuación matemática que permite predecir el nivel de riesgo de acuerdo a la magnitud de la carga. También se aplicó el software Autocad para registrar los ángulos generados en cada postura que se usan para el método RULA y se observó que los ángulos del software y los obtenidos de la medición directa tuvieron un ligero desfasamiento. Para reducir el riesgo del alimentador de sorgo al molino de martillos, se adaptó un dispositivo de transporte de grano del vehículo (camioneta) al molino de martillos que disminuye notablemente las posturas críticas del trabajador, así como el diseño y construcción de un dispositivo de tracto-carga.
Approach to the autistic spectrum disorder
Authors: Pérez Cristina Maria Belmonte , Martinez Isabel Albaladejo , Clares Nerea Liza , Alonso Jose María Rabal
Published: May 2021

The objective of the work that we are going to present below is to choose a type of disability, in our case the Autism Spectrum Disorder, on which we will work with the intention of developing an educational project in which the students are given a response, having take into account the individual characteristics of each of them, as well as the context in which they are found. We decided to choose this disability because the four members of the group have treaty, at some point in our life, with people who have Autism Spectrum Disorder, whether they are children or adults. Therefore, it seemed a good idea to work on a topic that we have had the opportunity toapproachpersonally one way or another. However, this does not mean that, by having had the opportunity to meet and interact with people with this syndrome, we have known how to act with and towards them. It is for this reason that we would like to be able to know their characteristics and the needs they need to be able to successfully achieve in our future what we do notwe knew how to doin the past, that is, to contribute to a good development of the student body and to cooperate to achieve their integration into society.
Efectos de estilos de liderazgo del director en la gestión de Instituciones Educativas
Authors: Collao Félix Eleazar De la Rosa , Vargas Isabel Menacho , Huari María Ysabel Alvarez , Mucha José Luis Camarena
Published: May 2021

El problema de la gestión escolar es percibida como la deficiencia de la capacidad de los gestores educativos, en la cual el tipo de liderazgo no es claramente asumida por lo que los resultados en la escolaridad no alcancen las metas deseadas para el cambio sostenible del país, por ello, la importancia del estudio está en el fundamento que precisa la necesidad de generar conocimiento respecto a la forma de gestión, liderazgo así como del impacto en este nuevo proceso implementado a partir del año 2016, es un estudio de enfoque cuantitativo, básico de diseño no experimental con una muestra 116 docentes se utilizó la técnica de la encuesta y se aplicó  instrumentos estandarizados con alta validez por juicio  de expertos, los datos procesados en estadística descriptiva reportaron que el liderazgo es fuerte y la gestión educativa es buena, la prueba de hipótesis refrendo un Chi cuadrado de Wald 28,390 y una significancia de 0,000 menor a 0,05 determinando que el nivel de liderazgo y sus componentes inciden en los niveles de gestión de las instituciones educativas de la UGEL Parinacochas en la región Ayacucho, corroborando conclusiones de estudios previos.
Latin American Startups
Authors: Campos Carlos Rios- , Campos Pilar del Rosario Rios , Batalla Elixer Alexandra Palma , Figueroa Fanny Esther Renteria , Castro Juan Francisco Castro , Torres Antero Alexander Cabrera , Delgado Freddy Manuel Camacho , Paz Sonia Carmina Venegas
Published: May 2021

Es necesario conocer el estado de las startups. El objetivo general fue determinar la situación de las Startups latinoamericanas. Metodología, en esta investigación se han seleccionado 25 documentos, realizados en el período 2016 - 2021; incluyendo: artículos científicos, artículos de revisión e información de sitios web de organizaciones reconocidas. Las palabras clave utilizadas en las búsquedas fueron: latinoamericanas y startups. Resultados, el Banco Nubank de Brasil y Rappi de Colombia son las empresas unicornios, que están creciendo en América Latina de manera sostenida y logrando posicionarse, recibiendo más financiamiento internacional. Además, se observan startups de otros países de la región, las cuales muestran un crecimiento significativo y son reconocidas en nuevos mercados. En conclusión, la situación de las Startups latinoamericanas es: las startups Fintech están revolucionando la industria financiera en toda América Latina, las startups latinoamericanas tuvieron acuerdos récord de capital riesgo en 2020 y el Banco Nubank de Brasil y Rappi de Colombia son las empresas unicornios.
Estudio de la Respuesta a los Armónicos de un Sistema Masa Resorte: Cuasi-Resonancia
Authors: Ávila J. Agustín Flores , Franco Abel Rodríguez
Published: May 2021

Uno de los objetivos que se fijan en la enseñanza de las Ecuaciones Diferenciales en el Tecnológico Nacional de México, es emplearlas en el estudio de los sistemas dinámicos, y uno de los primeros sistemas que se estudian es el Oscilador Mecánico. En este artículo presentamos el análisis de la respuesta de un sistema tal ante los armónicos y, en particular, aquel en el que se presenta la Cuasiresonancia. En un oscilador es imposible que se presente la resonancia, ya que las frecuencias están dadas mediante números irracionales los que, como sabemos, no se pueden igualar. Sin embargo, si se pueden presentar valores muy próximos entre la frecuencia natural del sistema y la frecuencia de la señal de excitación: En este caso se presenta el fenómeno que denominamos “Cuasiresonancia”. Hay múltiples ejemplos en ingeniería de sistemas que se han destruido por esta causa. No obstante que la Cuasiresonancia es deseable en algunos sistemas eléctricos, en general, en los sistemas mecánicos es indeseable por los daños que provoca, por lo que conocer la respuesta de los sistemas en tales circunstancias es fundamental para evitar daños y respuestas no deseadas en los sistemas.
Software Libre para el Análisis Espectral de Señales
Authors: Vanegas Carlos Alberto , De Caldas José , Guerrero Rocío Rodríguez , De Caldas Francisco José , Montiel Gerardo Castang
Published: May 2021

En el presente artículo se realiza el análisis espectral de señales en particular de algunos de los códigos de línea más utilizados o comunes en la representación eléctrica de una secuencia binaria de datos , con el propósito de validar su comportamiento espectral, así como su dependencia de los parámetros tasa de bit (R) que corresponde a la velocidad a la cual se transmiten los datos, en bits por segundo; frecuencia (f) definida como aquellas bandas o rangos en las que se distribuyen los componentes de potencia, dada en hertz y tiempo de bit (Tb) que corresponde al tiempo que dura la presencia o transmisión de un bit, dada en segundos y su incidencia en las gráficas de la densidad espectral de potencia.

Se utiliza el software libre Python aplicado en casos de análisis de señales y en la enseñanza de temas de ingeniería, particularmente en la telemática y  las comunicaciones.
Promoción de una alimentación saludable en la infancia y la adolescencia para el cumplimiento de los derechos del niñ
Authors: Ingelmo Raquel María Guevara , Litago José David Urchaga , Alonso Fernando González
Published: May 2021

En la convención sobre los derechos del niño se contempla de la necesidad de garantizar el más alto nivel de salud posible en la infancia, siendo además este un objetivo prioritario a nivel educativo y sanitario en el mundo.

La alimentación, es uno de los factores determinantes que más influyen en el estado de salud de las personas, siendo la infancia y la adolescencia periodos clave. La Organización Mundial de la Salud señala que  una alimentación inadecuada en la primera infancia es uno de los principales factores de riesgo de mala salud a lo largo de la vida, encontrándose además directamente relacionada con la aparición de enfermedades crónicas en la adultez.

La propia convención citada, señala además como derecho de este grupo de población el acceso a una educación integral que tome en consideración todas las dimensiones de la persona (física, mental y social).

Se presenta a continuación un estudio de los hábitos de alimentación de la población adolescente que, fundamentado en estos derechos del niño, justifica la importancia de programas de intervención a nivel educativo que favorezcan hábitos correctos de alimentación desde la infancia como medio de protección y promoción de la salud.