bluuebunny/crossref_metadata_2025 huggingface dataset:
Consequences of suplementing the HHO gas and CNG with EGR on diesel engine characteristics
Authors: Thangaraj Suja , Govindan Nagarajan
Published: May 2022

Water electrolyzed hydroxyl gas (HHO or Brown gas) and compressed natural gas (CNG) are the important and promising alternatives to the pure fossil fuels. The global concern is about GHG emission in the environment and ambient air pollution steered by mass consumption of fossil fuels in automobile industries and power sectors. In this study, the combustion, performance and emission characteristics of HHO gas and CNG mixtures supplied to intake manifold of compression ignition engine using diesel as a pilot fuel are studied. The same investigations are repeated with various exhaust gas re-circulation (EGR) proportions to study the impact of EGR on multi fuel mode (diesel + HHO gas + CNG) in a Diesel engine. The multi fueled engine performance, combustion and emission parameters are presented and compared with graph and analytical discussion. The results indicated that at full load, the NOx emission decreased by 4% (without EGR), 18% (with 10% EGR) and smoke density decreased by 78% with multi fuel mode comparing to the pure diesel operation at constant speed of 1500 rpm. Also more enhanced performance by improving the brake thermal efficiency by 17%, reducing the brake specific energy consumption by 19%, resulted better fuel economy, and power due to better combustion.
Study on ice slurry flow characteristics based on genetic algorithm
Authors: Hao Shuai , Zhou Wenjie , Wang Jiajun , Xia Yudong , Jiangzhou Shu
Published: May 2022

Ice slurry is a solid-liquid phase fluid consisting of a liquid solution and ice particles. It is widely used in life and engineering because of its excellent cold-carrying capacity. In this paper, a genetic algorithm is used to optimize the ice slurry flow with the minimum pumping power as the objective function. The results show that the genetic algorithm can be effectively applied to the optimization of ice slurry flow characteristics within reasonable parameters. In addition, the transport characteristics of ice slurry are also analyzed. The selection of suitable ice mass fraction values under different working conditions can make the transport characteristics optimal.
Investigation of the effect of deposit layer on heat transfer in the Triga Mark II nuclear research reactor cooling system
Authors: Akay Orhan , Das Mehmet
Published: May 2022

In this presented study, the cooling problem of the I.T.U. Triga Mark-II reactor has been handled and analyzed, and solutions were proposed. First of all, a thermal model of the reactor, heat exchanger, and cooling tower trio was established in the reactor. With this model, which was obtained with the help of experimental data, the parameters affecting the change of reactor water temperature over time were determined, and significant findings were obtained by investigating the possibilities of increasing the cooling power of the existing system. Then, using these mathematical equations, the effects of parameters that can affect the power of the reactor cooling system are investigated. The parameters affecting the cooling power are the cooling water flow rates in the second cooling circuits and the deposited layer that may exist as a result of numerical calculations. Different models have been created with machine learning algorithms (page regression, decision tree) to estimate the effect of the deposit layer. The mathematical and predictive models obtained with the experimental data for the heat transfer coefficient of the deposit layer, hbd, were compared. The pace regression algorithm modeled the hbd values with the least error rate (RMSE: 1.66) among the models. It has been calculated that the average tank water temperature will decrease by approximately 3.5?C if the deposits layer is cleared.
Experimental and numerical comparison of thermodynamic performances of new and old generation refrigerants in the same cooling system
Authors: Das Mehmet , Pektezel Oguzhan
Published: May 2022

The use of new generation low GWP refrigerants in cooling systems is becoming increasingly common due to thermal performance and less environmental impact. In this study, the thermal performance of the new generation R290 refrigerant and the old generation R404A refrigerant in the same cooling system were investigated experimentally and numerically. The thermal performance values of both gases were compared, provided that the temperature of the cold room cooled by the vapor compression cooling system drops to 0?C. ?5?C, 0?C, 5?C evaporator temperatures and 25?C, 30 ?C, 35 ?C condenser temperatures were used as operating parameters. The experimental results revealed that the highest COP values in the system for R290 and R404A were 4.68 and 3.94, respectively. An average of 9.38% increase in cooling capacity was detected with R290 compared to R404A refrigerant. In the numerical analysis part of the study, the evaporator surface temperature and air velocity distributions of both refrigerants in the cold room were shown numerically by using ANSYS FLUENT 19.1. As a result of the study, it was stated that R290 had higher thermal performance than R404A, according to both experimental and numerical analysis results.
Evaluation of the Difficult Intravenous Access (DIVA) Scoring in Hospitalized Pediatric Patients
Authors: Kanaley Rebecca L. , Gillette Cheryl , Schriefer Jan , Gottfried Julie Albright , Bramley John
Published: May 2022

Highlights

Background:

First-attempt success rate for placing pediatric peripheral intravenous (PIV) catheters ranges from to 24% to 52%. Multiple attempts can increase risk of deleterious outcomes. It is essential to screen pediatric patients appropriately to identify those who will require additional resources for successful PIV placement.

Methods:

A convenience sample of hospitalized pediatric patients 0 to 18 years of age on a general care unit was used in this performance improvement project. Prior to attempting PIV access, nurses completed a data collection tool that included elements of established difficult intravenous access (DIVA) tools as well as first-attempt successful PIV placement. The primary outcome measure was to determine if each DIVA scoring tool is accurate in predicting the need for additional resources to achieve successful first-attempt PIV placement. The secondary outcome measure was to compare the predictive value of each DIVA scoring tool among an inpatient pediatric population. Following data exploration and cleaning, a correlation analysis was performed with logistic regression to assess DIVA score effectiveness in predicting success of PIV insertion on the first attempt.

Results:

Out of 133 children, 167 PIV attempts were analyzed with 150 PIV attempts included in the final data analysis. Of the 150 PIV attempts analyzed, 60% (n = 90) were successful on the first attempt. Performance of prediction for first-time insertion success was comparable among all 4 DIVA scoring tools.

Conclusions:

None of the 4 DIVA scoring tools were superior in predicting first-time PIV placement among hospitalized children. Vein palpability was more predictive, although not statistically significant.
Reliability and Validity of a Chinese Version of the Lysholm Score and Tegner Activity Scale for Knee Arthroplasty
Authors: Huang Hongshi , Zhang Si , Wang Yi , Tegner Yelverton , Wang Yongjian , Jiang Yanfang , AO Yingfang
Published: May 2022

Objective: To verify the reliability and validity of Chinese versions of the Lysholm score and the Tegner activity scale for knee arthroplasty.Methods: Sixty-four patients undergoing total knee arthroplasty and 28 healthy volunteers were included in this study. Participants were divided into 4 groups: a pre-operation group; a 3 months post-operation group; a 1-year post-operation group; and a control group of healthy volunteers. Participants completed the Lysholm score and Tegner activity scale twice over a period of 3–7 days.Results: The intraclass correlation coefficients of the Lysholm score and Tegner scale were both relatively high, at 0.99 and 0.97, respectively. Moreover, the Cronbach’s alpha of the Lysholm score was 0.71. The items “locking” and “instability” differed slightly between groups (Kruskal–Wallis: for locking, χ2 (p) = 13.48, p = 0.0037; for instability, χ2 (p) = 4.32, p = 0.2292).Conclusion: The simplified-Chinese versions of the Lysholm score and the Tegner scale are applicable for use with patients undergoing total knee arthroplasty, and have relatively high validity and reliability. The items “locking” and “instability” should be combined with clinical data to make the Lysholm score more suitable for assessment of total knee arthroplasty.
LAY ABSTRACTThe aim of this study was to verify the reliability and validity of Chinese versions of the Lysholm score and the Tegner activity scale for assessment of knee arthroplasty. A total of 64 patients undergoing total knee arthroplasty (TKA) and 28 healthy volunteers were included in the study. Participants were divided into 4 groups: a pre-operation group; a 3 months post-operation group; a 1-year post-operation group; and a control group of healthy volunteers. Study participants completed the Lysholm score and Tegner activity scale score twice for over a period of 3–7 days, and the results analysed. The simplified-Chinese versions of the Lysholm score and the Tegner scale were found to be applicable for use with total knee arthroplasty patients, and to have relatively high validity and reliability. Furthermore, the items “locking” and “instability” should be combined with clinical data to make the Lysholm score more suitable for assessment of total knee arthroplasty.
Effects of Charcoal Toothpaste on the Surface Roughness, Color Stability, and Marginal Staining of Resin Composites
Authors: Bragança GF , Soares PB Ferreira , Simeão Borges J , Fernandes Vilela AB , Santos Filho PC , Soares CJ
Published: May 2022

Objective

This study was designed to evaluate the effects of charcoal toothpaste on the surface roughness, color stability, and marginal staining of resin composite restorations.

Methods

A total of 100 bovine incisors was collected. The crowns were sectioned and randomly divided into 10 groups (n=10) according to two study factors: toothpaste groups and nanoparticle resin composite groups. Five toothpastes—Bianco Pro Clinical (Bianco Oral Care, Uberlândia, MG, Brazil) - Control group; Bianco Carbon (Bianco Oral Care); NAT, Natural Suavetex Carvão Ativado (Suavetex, Uberlândia, MG, Brazil); Nano Action Black Be Emotion (Polishop, Jundiaí, SP, Brazil); and BIW, Black is White (Curaprox, Curaden AG, Kriens, Switzerland)—and two resin composites—Z350XT (Filtek Z350XT, 3M Oral Care) and Vittra (Vittra APS FGM, Joinville, SC, Brazil)—were used. Circular cavities with a diameter of 4 mm and a depth of 1 mm were prepared on the buccal face of the tooth crowns and restored with resin composites. The specimens were subjected to three months of simulated toothbrushing. The surface roughness (right angle [Ra], in micrometers [μm]) of the resin composites was measured before and after toothbrushing in five areas per specimen. The resin composite color and luminosity changes (ΔE and ΔL, respectively) were measured using reflectance spectroscopy (Vita EasyShade). Macro photographs were taken before and after toothbrushing to qualitatively analyze the marginal staining (MSt) of the resin composite restorations. Scanning electron microscopy (SEM) was performed before and after the simulated toothbrushing. Ra data were analyzed using two-way analysis of variance with repeated measures and the Tukey HSD test; MSt was analyzed using Kruskal-Wallis and Dunn tests (α=0.05), and the resin composite color change was analyzed using the clinically unacceptable level of ΔE > 3.3.

Results

Simulated brushing increased Ra irrespective of the resin composite or toothpaste used. No significant differences were found in Ra between the control group and all groups on which the charcoal toothpastes were tested. A clinically unacceptable level of resin composite color change (ΔE>3.3) was found after the use of most charcoal toothpastes. Use of Bianco Carbon resulted in marginal staining similar to that of the control group and was lower than that of the other charcoal toothpastes. Vittra brushed with black toothpaste showed the highest marginal staining.

Conclusion

Use of charcoal toothpaste resulted in Ra values of resin composites similar to those found with conventional toothpastes. Charcoal toothpaste generally resulted in clinical resin composite color changes (ΔE). All charcoal toothpastes, except Bianco Carbon, caused marginal staining of the resin composite restorations.
Effect of Argon Plasma Surface Treatment on Repair of Resin Composite Aged Two Years
Authors: Negreiros WM , Ayres APA , Willers AE , Hirata R , Giannini M
Published: May 2022

Objectives

To evaluate the effect of argon plasma treatment (PLA) when combined with sandblasting (SAN), silanization (SIL), and hydrophobic bonding resin (HBR) on the shear bond strength (SBS) of a two-year water-aged resin composite bonded to a newly placed composite after 24 hours and one year of water-storage.

Methods and Materials

Thirty-six light-cured composite plates (20mm x 20mm x 4mm thick) were obtained and stored at 37°C in distilled water for 2 years. These aged plates were distributed into 6 groups (n=6) according to the surface treatment: no treatment (Negative Control); SAN+SIL+HBR (Positive Control); SAN+PLA+SIL+HBR; PLA+ SIL+HBR; PLA+SIL; PLA+HBR. Fresh resin composite cylinders were built up using silicone molds (hole: 1.5 mm high x 1.5 mm diameter) positioned over the aged plates. Half of the SBS samples were stored in distilled water for 24 hours and loaded until failure, while the other half were stored for 1 year before being tested. Data were submitted to two-way analysis of variance and post-hoc Tukey Test (preset alpha of 0.05).

Results

Positive Control, SAN+PLA+SIL+HBR and PLA+SIL+HBR groups presented higher SBS means at the 24 hour evaluation. After 1 year of water storage, all groups demonstrated significant SBS reduction, with the SAN+PLA+SIL+HBR group presenting the highest SBS.

Conclusions

Resin plasma treatment in combination with other surface treatments can improve the SBS of composite repairs after one year of water storage. The SBS of the composite repair was not stable over time regardless of the surface treatment.
Analysis of Mulching Effects on The Growth Performence of Spring Onion Freda Variety (Allium fistulosum L.)
Authors: Christanti Novani Wahyu , Widyawati Nugraheni
Published: May 2022

The use of mulch aims, among others, to provide a more ideal microclimate to support the growth of spring onion. The purpose of this study was to analyze the effect of mulch on the growth performance of the spring onion Freda Variety. The research location was conducted at the Salaran Experimental Garden belonging to the SWCU Agriculture and Business Faculty from May 2021 to August 2021. This experiment used RAK which consisted of five treatments, namely M0 (without mulch), M1 (black-silver plastic mulch), M2 (transparent plastic mulch), M3 (corn stem mulch), M4 (reed mulch). Each treatment was repeated five times and the data were analyzed using variance and DMRT 5%. The result showed that the best treatment to support spring onion performance was reed mulch because it had the highest average of all growth components and plant fresh weight of 53,17 cm, stem diameter 14,92 mm, number of leaves 6,50 leaves, number of tillers 1,90 and fresh weight 441 grams and has the highest soil organic matter content, lower temperature soil and increase soil moisture. Keyword: Reed, Corn stem, Spring onion, Plastic mulch, Mulching
Analysis of Maros River Discharge Using the Modified Soil and Water Assessment Tools (SWAT) Program
Authors: Fausan Ahmad , Sapei Asep , Suharnoto Yuli , Pandjaitan Nora Herdiana
Published: May 2022

Soil and Water Assessment Tools (SWAT) which is developed in America was used to analyze the effect of land management on discharge, sedimentation, and water quality in a river basin area. The hydrological conditions in the Americas are different from Indonesia, so a modified SWAT is done. This research aimed to implement a modified SWAT program to predict the results of a better discharge analysis based on hydrological analysis in the sub-Watershed area. About 13.90% of the area was paddy fields. The evaluation of the module had been done by looking at the coefficient of determination (R²) and Nash-Sutcliffe Efficiency (NSE) based on the comparison of simulated discharge results with an observation discharge. Research began with delineation DEM, HRU formation, simulation, calibration, and validation. The R² value for daily data on modified SWAT was 0,725. It was better than the original SWAT and SWAT with Pothole, which were 0,706 and 0,708 respectively. Likewise, the NSE value for daily data on modified SWAT was 0,721, on original SWAT and on SWAT with Pothole was 0,668 and 0,685 respectively. The analysis result showed that the modified SWAT provide good discharge prediction results, indicated by relatively high R2 and NSE values.Keywords: hydrological analysis,modified SWAT, paddy field, pothole, SWAT
The Kinetics of Ethanol Volume Change With Variation of Input Volume and Heating Temperature in The Re-Distillation Process of Glucomannan Extraction Residue Using Batch Distillator
Authors: Manurung Saut Edo Riko , Pratama Rizky Qhasim , Rahayoe Sri , K Joko Nugroho W. , Wisnu Febryan Kusuma
Published: May 2022

Ethanol is commonly used as a solvent in extracting glucomannan from Porang. However, the extraction process often leaves ethanol. The remaining ethanol can be re-distilled to save the use of it. The remaining ethanol is used in the re-distillation process with input volumes of 50L and 100L with variations in heating temperatures of 80°C, 85°C, and 90°C. This study aimed to analyze the effect of the ethanol input volume and temperature on the output volume of re-distilled ethanol and determine the constant change in volume of re-distilled ethanol using kinetics and Arrhenius equations. The results showed that the input volume and heating temperature variation differed significantly from the ethanol output volume. The k value changes in the ethanol output volume from re-distillation with an input volume of 50L and a temperature variation of 80°C, 85°C, and 90°C respectively were 0.0016, 0.0023, and 0.0027 L/min, while the input volume of 100L was 0.0009, 0.001, and 0.0014 L/min. The results of the k value as a function of temperature using the Arrhenius equation showed that the re-distillation process with an input volume of 50L and 100L produces activation energy (Ea) of 55.83 kJ/mol and 46.94 kJ/mol, while the collision frequency value (A) of 3.03x105/min and 7.7x103/min.Keywords: Distillation, ethanol, glucomannan, arrhenius model, re-distillation
Utilization of Lerak Juice (Sapindus rarak DC) as Natural Surfactant in the Liquid Washing Soap Production
Authors: Hawa La Choviya , Farhanrika Naura Lulu , Ahmad Ary Mustofa
Published: May 2022

Before detergent was commonly used, a natural cleanser which function is to help people to clean several things in their houses was Lerak berry (Sapindus Rarak DC).  This berry contains saponins (28%) which can be used as the ingredient for shampoo, soap, and other kind of cleaning agents. Dilutting Lerak juice into soap base will produce liquid washing soap which can be an alternative to reduce the use of detergents. This study aims at finding the best treatment, balance ratio of Lerak juice (2:1; 3:2; 1:1; 2:3), and diluting method for the soap base (heating and non-heating) to be used for producing liquid washing soaps with the best characteristic. This study uses two-factor randomized block design method which later be analyzed using ANOVA. Organoleptic testing of the hedonic quality to the color, scent, foam quantity, cleaning-power, the after-effects impression, and the general assessment of the liquid washing soaps results a 2:1 Lerak juice balance ratio with heating method is found to be the best treatment for diluting method. The balance ratio affects the consistency and viscosity which also affects the density, pH, and water holding capacity, but does not affect the foam’s stability. Keywords: Lerak, Liquid Washing Soap, Sapindus Rarak, Surfactant
Yield Test of Hybrid Harapan Chili (Capsicum annuum L.)
Authors: Ekowahyuni Luluk Prihastuti , Wulansari Layla Indah
Published: May 2022

The purpose of this study was to determine the yield test of the promising hybrid chili (Capsicum anmuum L) at the Leuwikopo Experimental Garden. The research was conducted at the Experimental Garden of IPB Leuwikopo, located in Darmaga District, Bogor Regency, West Java. The implementation of the research consisted of several stages, namely nursery, land management, planting, maintenance, harvesting, disease inoculation and observation. Observations were made on 10 sample plants, which were randomly selected for each replication. The hybrid chili genotypes tested showed the same results as the comparison varieties in qualitative characters, especially flower petal color, flower crown color, fruit shape, fruit skin surface and old fruit color. As well as showing a higher yield than the comparison shown in the F-count test with a significant difference between the hybrid chilies tested and the comparison on the characters of dichotomous height, leaf length, weight per fruit, fruit length, fruit skin thickness, weight of 1000 seeds, age of flowering, marketable harvest, fruit weight per plant and chili fruit production per hectare.Keywords: power test; hybrid chili; IPB experimental garden
Classification of Freshness Levels and Prediction of Changes in Evolution of NH3 and H2S Gases from Chicken Meat during Storage at Room Temperature
Authors: Nastiti Pramilih , Bintoro Nursigit , Karyadi Joko , Rahayoe Sri , Nugroho Darmawan
Published: May 2022

Chicken meat has a high nutrient content. However, its quality is easy to be degraded. The degradation is normally characterized by the formation of metabolite gases (NH3 and H2S) as deterioration indicators. Sensors detect phenomena better than human senses. This study aimed to classify meat quality based on gas formation during meat storage. In addition, a kinetics model of gas changes was determined. The gases were detected using a set of equipment consisting of Raspberry Pi and Metal-Oxide-Semiconductor (MOS) gas sensors. Samples were put in a 10 x 10 x 10 (cm) black container. MOS sensors were put inside the box to detect the gases at room temperature for 24 hours, with data collection being recorded every hour. Obtained data were then analyzed using Principle Component Analysis (PCA) for quality classification. The study showed that the quality of chicken meat was classified into three groups with a total variance of more than 95%. PC1 explained 88.2%, and PC2 explained 9.0%. The constant rate of H2S and NH3 changes followed the first-order kinetics with a constant rate of 0.2641 and 0.2925, respectively. The equation for H2S and NH3 changes were Ct=1.70 e0.2641 t and Ct=1.00 e0.2925 t, respectively. Keywords: Chicken meat, Freshness, H2S gas, NH3 gas, Sensor
Verification of the Measurement Properties of an MST Test: An Alternative Ex-Post Approach
Authors: Botta Emanuela
Published: May 2022

This article briefly describes the research (Botta, 2021) that led to the construction and field administration of the first multilevel adaptive test (MST Test) in Italy and reports the results of a new research project that aimed at verifying ex-post the measurement properties of the constructed test. The test was designed for the estimation of students' abilities in mathematics in grade 10 and was administered to a sample of 4,132 students. In the paper, we analyze with two paired-samples t-tests the changes in the mean of the students' ability estimation and the changes in the relative standard error of the mean as they move from the first to the last level of the test. The results demonstrate the validity of the adaptive algorithm underlying the implementation of the test. The results obtained are also a further empirical verification that in an MST test the calculation of the true score is sufficiently accurate for the purpose of selecting the next testlet, as stated by Luecht and Nungester (1998).
An Analytical View on World Happiness with Unsupervised Machine Learning
Authors: Zhu Andrew
Published: May 2022

This analysis covers the underlying behavior and meaning of the data provided by the World Happiness Report (WHR). The data includes six parameters that the WHR uses to calculate world rankings. From the data analysis, several issues with the growth of the world as a whole and the lack of resources in the trailing countries can be inferred. From the trends in bar graphs and histograms, world growth can be categorized as a “spearhead” type of happiness growth, with developing countries that are behind developed countries and a few trailing countries that lag behind the rest of the world. A heatmap was generated to show the correlation between the 6 variables, showing that corruption and generosity have no correlation with any other variable including the happiness score. Using hierarchical clustering, an unsupervised machine learning model, 3 clusters of countries were found, which supports the results of the heatmap and shows that the poorest cluster, while ranking high in generosity, still rank much lower than the other two groups of countries.
The Impact of Students’ Attendance on Effective Learning: An Evaluative Study
Authors: Abdul Munas M. H. , Mohamed Nairoos M. H. , Sithy Shathifa M. C. , Mohammed Hijas A. M.
Published: May 2022

Student attendance is seen as a significant hallmark of an effective school and as a tool for reducing student dropouts and maintaining an effective learning-teaching process. In this way, the data of the students who studied in Grade 10 in the year 2019 at a well-known and famous school in Oluvil area of East Sri Lanka, Al Jaysha Girls' College, were examined for this research. The purpose of this study is to identify the impact of continued attendance on students' effective learning. Interview, discussion, questionnaire and telephone conversation with school principal, teachers, students in grade 10, the alumni, etc. were primary sources to collect data. And the secondary data were collected via results obtained in all three exams, school texts, special issues, co-curricular activities and presented studies and website related to effective learning. The study has found that there is a gap between the individual personality and continuity attendance of the students, which leads to a stipulated number of dropouts.
Standardy raportowania niefinansowego na przykładzie wybranych zakładów ubezpieczeń w Polsce w latach 2018-2020
Authors: Chamera Klaudia
Published: May 2022

W ostatnim czasie coraz ważniejszym elementem zarządzania i podejmowania strategicznych decyzji przez przedsiębiorców i interesariuszy jest możliwość porównania i oceny działalności przedsiębiorstw przez pryzmat informacji niefinansowych. Znajduje to odzwierciedlenie w legi-slacji unijnej, która nakłada obowiązek ujawniania informacji niefinansowych przez największe przedsiębiorstwa, których w Polsce jest około 300. Niniejszy artykuł przedstawia istotę, przyczy-ny oraz skutki raportowania niefinansowego, a także rodzaje standardów sprawozdawczości niefinansowej. Celem artykułu jest analiza rodzajów standardów raportowania niefinansowego zakładów ubezpieczeń w Polsce. Badaniem zostały objęte raporty niefinansowe sporządzone w latach 2018?2020 przez zakłady ubezpieczeń prowadzące działalność w Polsce według stanu na 31.12.2020 r.
Portugal en la fiesta de la ciencia de la universidad en España
Authors:   Universidad de Salamanca, Hernández Díaz José María
Published: May 2022

La educación ha desempeñado siempre una función decisiva en la construcción de identidades personales y colectivas, como por ejemplo el ser portugués o el ser español, y en la construcción de imaginarios del otro, al que se considera adversario, enemigo y para el que se establecen fronteras físicas o imaginadas. Las relaciones históricas entre Portugal y España, que en el pasado secular fueron conflictivas, requerían de una legitimación educativa desde la escuela, desde el ámbito familiar o desde los espacios de sociabilidad. También desde un lugar tan simbólico y solemne como el paraninfo universitario en la celebración anual de la llamada Fiesta de la Ciencia se alimentan o eliminan imaginarios, en este caso desde España hacia Portugal. Haciendo hermenéutica de las lecciones inaugurales del curso académico que se estudian, seis de las pronunciadas en las universidades españolas de un total de 2165 unidades diferentes, desde 1939 a 2019, constatan una evolución explícita de ese imaginario hacia Portugal. Nuestro estudio confirma la evolución producida en los discursos inaugurales, pasando desde posiciones de reserva distanciada a una leal colaboración ibérica respetando los derechos e idiosincrasia propias. Este cambio de orientación se ha producido desde la incorporación simultánea de España y Portugal a la Unión Europea en 1986.
Nota Introdutória: Formación del profesorado y profesionalidad docente. Curriculum, pertinencia y experiencias
Authors:   Universidade de Barcelona, Montané López Alejandra
Published: May 2022

La profesión docente está en el centro de las miradas en estos tiempos de elevada complejidad social. El profesorado estáviviendo relevantes cambios en su profesión y, por lo tanto, es lícito revisar cómo se produce su aprendizaje, cómo se desarrolla la profesionalidad docente, cómo se adapta a los cambios, cómo se genera su identidad y cómo gestiona la complejidad. Todos estos elementos implican múltiples dimensiones de análisis y una considerable variedad de aproximaciones temáticas.
Metodología para analizar políticas docentes por los actores educativos. El caso de las políticas de formación inicial en México
Authors:   UniversidadAutónoma de Baja California, Cordero Arroyo Graciela , Díaz López Carlos ,   UniversidadAutónoma de Baja California
Published: May 2022

Este artículo presenta una metodología para conocer la opinión de las Instituciones Formadoras de Docentes (IFD) de una entidad federativa del noroeste de México sobre directrices o recomendaciones de políticasdocentes para mejorar la formación inicial de docentes de Educación Básica que emitió el Instituto Nacional para la Evaluación de la Educación (INEE) para todo el país. Docentes, directivos y personal técnico de las IFD revisaron y opinaron sobre las recomendaciones federales en el marco de un taller diseñado con este fin. Como resultado, los talleristas opinaron que, en su mayoría, las recomendaciones están formuladas claramente y son pertinentes. Sin embargo, expresaron dudas sobre su viabilidad dadas las condiciones actuales de las IFD, por lo que se hicieron algunas recomendaciones para su futura implementación. La metodología resultó adecuada para este tipo de ejercicio de participación social en la toma de decisiones.
Intercompreensão em línguas para surdos: uma proposta para o desenvolvimento das multiliteracias
Authors:   Universidade de Aveiro, Lúrago Carolina , Araújo e Sá Maria Helena , Silva Ana Isabel ,   Universidade de Aveiro,   Instituto Politécnico de Viseu
Published: May 2022

Os desafios contemporâneos exigem uma educação que proporcione instrumentos para o exercício da cidadania ativa nas várias esferas de atuação dos indivíduos. Reconhecendo-se as novas práticas de literacia e visando incluir as pessoas surdas no mundo plural e multimodal, desenvolvemos um estudo sobre os efeitos de um Programa de Intercompreensão em Línguas (PIL) no incremento das multiliteracias deste público, com vista à sua emancipação e exercício de cidadania. O estudo se insere numa perspetiva de educação para todos, assente na valorização e diálogo com a diversidade, no espírito crítico e na mobilização dos saberes e experiências pessoais. O PIL interseta trabalhos sobre a aplicação pedagógica da intercompreensão, perspetivas das literacias plurilíngues dos surdos e quadros teóricos e heurísticos desenvolvidos por projetos europeus sobre intercompreensão. Neste artigo, descrevemos o processo de concepção do PIL, o referencial teórico que o embasa, seu processo de validação e estrutura.
Impactos do ensino remoto no ensino superior privado em Portugal: competências socioemocionais e digitais
Authors:   Universidade Lusófona de Humanidades e Tecnologias, Luz Filipe , Fonseca Maria Micaela ,   Universidade Lusófona de Humanidades e Tecnologias, Franco Dulce ,   Universidade Lusófona de Humanidades e Tecnologias
Published: May 2022

A Comissão Europeia, no Plano de Ação para a Educação Digital 2021-2027. Reconfigurar a educação e a formação para a era digital (2020), sublinha a necessidade de explorar o potencial das tecnologias digitais para a aprendizagem e o ensino e desenvolver competências digitais para todos. Nesta era digital, a educação tem um papel essencial na modificação da sociedade, assim como, a tecnologia. Juntas compreendem uma dimensão fundamental de mudança social, já que a evolução e a transformação das sociedades são construídas por meio da interação complexa de fatores culturais, económicos, políticos e tecnológicos. Face a este enquadramento, os objetivos que nortearam esta investigação foram captar e comparar as perceções de estudantes do ensino superior privado (universitário e politécnico) sobre o ensino remoto nas aprendizagens e analisar o impacto desta modalidade de ensino nas competências socioemocionais e digitais. Para conduzir este estudo, a metodologia utilizada foi a construção e aplicação de um questionário a estudantes de diferentes cursos de duas instituições de ensino superior privadas. A amostra foi intencional (Creswell, 2014). Os dados foram recolhidos via questionário on-line, composto por questões de escolha múltipla e abertas. Os resultados deste estudo mostram que as medidas de confinamento impostas afetaram a forma de estar, de aprender e de ensinar. E que os estudantes inquiridos apresentam uma similaridade em termos de competências socioemocionais mas divergente no respeitante a competências digitais. Defendem, na sua grande maioria, uma aposta inequívoca no ensino híbrido. Por esta investigação, de carácter exploratório, podemos concluir que a utilização das tecnologias, exploradas nas aulas on-line, representam uma grande possibilidade de dinamização do ensino pós-pandemia, e que as competências digitais são estrategicamente importantes no contexto das transições ecológica e digital.
Formação inicial de professores de biologia numa instituição angolana: conceções dos formadores sobre a integração de Agendas Internacionais
Authors:   Instituto Superior de Ciências de Educação da Huíla, Chisingui António Valter , Costa Nilza ,   Universidade de Aveiro
Published: May 2022

O estudo decorre de um outro desenvolvido pelos autores que pretendeu compreender a forma como um Curso de Formação Inicial de Professores de Biologia numa instituição pública angolana era concebido e operacionalizado atendendo a orientações curriculares e formativas internacionais e nacionais. Tendo em vista aprofundar esse estudo, e focando-nos, agora, nos formadores e na relevância atribuída à integração das Agendas 2030 (ONU, 2015) e 2063 (CUA, 2015) no currículo, colocou-se a seguinte questão de investigação: em que medida os formadores incluem no currículo orientações emergentes dessas agendas e, se sim, como? Para responder à questão concebeu-se, e validou-se um questionário aplicado a todos os formadores (N=16), tendo-se obtido 14 respostas. Os dados foram tratados por estatística simples e análise de conteúdo. Os principais resultados sugerem que, apesar da maioria dos respondentes terem um conhecimento reduzido dessas orientações, existem algumas evidências que podem potenciar a sua integração (por exemplo, os objetivos formativos privilegiados, práticas relatadas de alguns dos formadores, vontade manifestada de que essas orientações sejam discutidas). Assim, sugere-se a necessidade de se desenvolver uma cultura institucional que valorize o conhecimento, a reflexão, e a operacionalização curricular, conforme recomendado pela literatura, de modo a promover uma educação para a sustentabilidade tendo em conta a sua complexidade.
Minimum Wage Increases and Vacancies
Authors:   Federal Reserve Bank of San Francisco, Kudlyak Marianna , Tasci Murat ,   Federal Reserve Bank of Cleveland, Tuzemen Didem ,   Federal Reserve Bank of Kansas City
Published: May 2022

Using a unique data set and a novel identification strategy, we estimate the effect of minimum wage increases on job vacancy postings. Utilizing occupation-specific county-level vacancy data from the Conference Board’s Help Wanted Online for 2005-2018, we find that state-level minimum wage increases lead to substantial declines in existing and new vacancy postings in occupations with a larger share of workers who earn close to the prevailing minimum wage. We estimate that a 10 percent increase in the state-level effective minimum wage reduces vacancies by 2.4 percent in the same quarter, and the cumulative effect is as large as 4.5 percent a year later. The negative effect on vacancies is more pronounced for occupations where workers typically have lower educational attainment (high school or less) and in counties with higher poverty rates. We argue that our focus on vacancies versus on employment has a distinct advantage of highlighting a mechanism through which minimum wage hikes affect labor demand. Our finding of a negative effect on vacancies is not inconsistent with the wide range of findings in the literature about the effect of minimum wage changes on employment, which is driven by changes in both hiring and separation margins.
Sales and Purchase Accounting Information Systems In Trading Companies
Authors: Gunadi Devina , Harnadi Bernardinus , Koeswoyo G. Freddy
Published: May 2022

Effective and efficient record of sales and purchase transactions are increasingly needed, especially in large transactions. This research is conducted at the “Toko Beras Dadar” in Peterongan Market. This shop still uses manual records. The difficult for manual record is to keep track of the existing stock of goods. This shop has not compiled trial balance and income statement according to standard. So, this problem must be solved with a website-based sales accounting information system. The program used are Laravel and MySQL. The results of technical testing show the system can run well and help the user to simplify transaction process.
RFID Implementation on Information Recording Systems of Deer
Authors: Wicaksono Jonathan Tyar Putro , Nugroho Erdhi Widyarto , Prasetya FX Hendra
Published: May 2022

Deer are animals that currently still have conservation status as protected animals. However, for the activities of breeding and caring for deer animals, they are allowed and given legal payment by the government. However, in practice, there is still a lot of illegal deer meat or the result of illegal hunting which is also sold in the Indonesian market. Recording of deer seed genealogy and legality of breeding is one way to differentiate between illegal and legal deer meat sellers. However, due to the manual form of recording, human errors often lead to errors in recording. Therefore we need an application that can handle manual recording coupled with the implementation of RFID on meat so that it is expected to facilitate the existing recording process. The purpose of this research is to create a deer recording system application that can assist users in making sales and purchasing transactions as well as checking the lineage of deer seeds using the implementation of RFID. The method applied is through the design of Use Case Diagrams, Entity Relationship Diagrams, flowcharts, and using the Laravel 7 framework with the application of MVC to produce a Deer Recording System (SRS) application aimed at helping breeders. After the application was generated, testing was carried out on 84 buyers and prospective buyers of deer meat in deer breeding in Kudus, and the results showed that the EE (convenience) and FC (facilities) variables had a significant correlation with the BI variable (desire to return).
E-Logistic Optimization For MSME’s To Prepare the New Normal Era (Conceptual Framework)
Authors: Wiranto Rio , Sanjaya Ridwan
Published: May 2022

The rapid development of technology in Indonesia due to the Covid-19 pandemic for the past two years has triggered a movement to change business models into e-commerce, including MSME units. This will certainly affect the logistics sector where this sector is one of the most important parts of e-commerce. Therefore, this scientific article aims to explain the optimization of e-logistics for MSMEs to prepare for the new normal era. This scientific article uses the literature review method with a conceptual framework that is expected to facilitate the reader and provide managerial and academic benefits. The results of the literature review that have been reviewed by the researcher showed that there is a need for supporting aspects of information and communication technology (ICT) to support the optimization of e-logistics for MSME units. The implementation of these aspects is divided into two categories, specifically for micro and small-medium enterprises
The Influence of Internet Finance on the Profitability of Commercial Banks in China
Authors:   School of Business and Economics, Universiti Putra Malaysia (UPM), Jalan Universiti 1 Serdang, 43400 Seri Kembangan, Selangor, Malaysia, Jiahui Chen , Yahya Mohamed Hisham ,   School of Business and Economics, Universiti Putra Malaysia (UPM), Jalan Universiti 1 Serdang, 43400, Seri Kembangan, Selangor, Malaysia, Ali Muhammad Hafiz ,   Faculty of Business and Management, Universiti Teknologi MARA (UiTM), Negeri Sembilan Branch, Rembau Campus, Jalan, Kampung Pilin, 71300 Rembau, Negeri Sembilan, Malaysia, Qamas Mohd Akbal ,   Treasurer’s Office, Universiti Kebangsaan Malaysia (UKM), 43600 UKM, Bangi Selangor, Malaysia
Published: May 2022

The emergence of internet finance is dominating the commercial bank’s market and replacing some of its roles. Hence, this study intends to investigate the impact of internet finance services; 1) Third-party internet payment) and 2) peer-to-peer (P2P) online lending, towards commercial banks in China. Therefore, this study aims to analyse the impact of (1) third-party payment and (2) P2P online lending on the profitability of commercial banks, and (3) to investigate the different impact of internet finance on profitability of commercial banks by types. This study uses EViews to regress the annual data of 16 commercial banks in China from 2008 to 2018. The dependent variable is Return on Assets (ROA) of commercial banks. The independent variables are third-party internet payment and P2P online lending. In order to preserve the fairness in findings, total bank assets, non-performing loan ratio and gross domestic product growth were set as the control variables. The findings highlight that third party internet payment has a significant negative effect, while P2P online lending exhibits a positive effect on the banks’ profit. Moreover, the effect varies with different types of banks. Joint-stock commercial banks are more affected by third-party payment and obtain relatively smaller profit from P2P online lending in comparison with state-owned banks. This study solidifies that internet finance does affect commercial bank’s profit and commercial banks should mutually cooperate with Internet finance platforms to capitalise on its development.
Success Determinants of Open Innovation Partnerships between Car Manufacturers and Start-Ups in Germany
Authors:   Faculty of Business Management, University of Applied Science Stuttgart, 70174 Stuttgart, Germany, Stache Elisabeth , Hauer Georg ,   Faculty of Business Management, University of Applied Science Stuttgart, 70174 Stuttgart, Germany, Harte Patrick ,   Business School, Edinburgh Napier University Edinburgh EH14 1DJ, United Kingdom
Published: May 2022

In a context of saturated markets, increasing price pressure, growing competition, changing preferences and consumption patterns, the automotive industry is evolving into a diversified mobility industry. This disruptive transformation challenges German car manufacturers to reinvent themselves and innovate in diverse directions. Since loose open-innovation (OI) partnerships with start-ups offer manufacturers not only flexibility but, more importantly, cutting-edge expertise from outside the traditional industry, they have become the partner of choice since 2010. Although incumbent-start-up partnerships are on the rise, the current literature scarcely addresses the challenges that arise from innovation cooperation with such disparate partners. Therefore, this study attempts to identify the success determinants to provide practitioners with guidance and contribute to close current gaps in literature. Based on a qualitative research design, in form of semi-structured expert interviews, key barriers and drivers concerning leadership, work methods, culture and intellectual property were identified. Considering the start-up´s, the incumbent´s and the interface´s perspectives, the paper provides a conceptual framework that illustrates the interrelations and challenges in open innovation partnerships. The start-up´s group expertise and maturity turned out to be a major driver for initiating collaboration. The key collaborative success drivers are agile work methods, the group´s internal cultural transformation, the interface´s autonomy, and a solid level of trust and openness between the involved parties. Besides practical recommendations, derived by the identified success factors, the paper constitutes a theoretical basis for further research.
Design digital: uma gráfica intangível
Authors: Moutinho Rúbio Francisco José Lucas
Published: May 2022

Como sugiere el título, el diseño digital puede ser un producto gráfico intangible, como una transición en el proceso de diseño de la página a la pantalla, o del diseño gráfico al diseño multimedia, provocado por las tecnologías de la información y la comunicación desde la década de 1990. Este artículo se ocupa del impacto de los efectos de la crisis financiera y económica mundial sobre la educación y las prácticas profesionales del diseño, que da paso a un nuevo paradigma en el que la sabiduría sustituirá a la economía y las sociedades basadas en el conocimiento. Por ello, este artículo revisa los procesos digitales sobre la economía como una especie de "convergencia" de las industrias de la información, el audiovisual y la comunicación, la "nueva economía", y sus implicaciones generales y evolución hacia el comercio electrónico.
King & Miranda Design. Una visión cosmopolita del diseño
Authors: García Garrido Sebastián
Published: May 2022

Santiago Miranda y Perry King forman el tándem perfecto para la eficacia y la visión cosmopolita con la que se define este estudio. Unen los dos conceptos estilísticos del diseño -el mediterráneo y el anglosajón- en su máxima expresión, en la combinación de la fuerza emocional y el pensamiento funcional, considerados como componentes esenciales del acto creativo. Su trabajo en productos electrónicos, iluminación, mobiliario urbano y doméstico se complementa con la creación de atmósferas, espacios expositivos, escenarios donde los objetos/obras conviven en eficaz armonía con los límites y volúmenes, los colores, la iluminación y la presencia del destinatario.
World Design Capital, una iniciativa con futuro si se comunica más y mejor
Authors: Sánchez Hernández Concepción
Published: May 2022

La visión histórica del diseño como la parte más superficial y menos importante de la realidad ha ido dando paso a una mucho más pragmática en la que la belleza de un objeto tiene casi tanto peso como su funcionalidad y, en algunos casos, incluso más. Hoy en día, todos, como consumidores, preferimos una cosa útil y bella, a otra sólo útil. Ante esta realidad, la iniciativa de World Design Capital —WDC—, planteada como una herramienta para mejorar la situación social, cultural y económica de una ciudad, durante un año, aprovechando todas las ventajas que puede ofrecer el diseño, es una propuesta muy atractiva y un auténtico ‘balón de oxígeno’ lleno de imaginación para las ciudades en los tiempos de crisis económica y social que vivimos.