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In this paper, we investigate the mass accretion properties in the innermost regions of a viscously evolved protoplanetary disk and try to find some clues to the outburst events. In our newly developed one-dimensional time-dependent disk model based on the diffusion equation for surface density, we take into account the following physical effects: the gravitational collapse of the parent molecular cloud core, the irradiation from the central star to the disk, the effect of the photoevaporation mechanism, the viscosity due to the magnetorotational instability (MRI) and the gravitational instability (GI), and the thermal ionization mechanism in the inner regions. We find that the mass accretion rate M · d i s k in the innermost regions is statistically high enough to generate outbursts, although there are regions where the accretion rate is low. Additionally, we find that there is a weak correlation between the high mass accretion rate M · d i s k and the molecular cloud core's properties (angular velocity ω and mass M cd ), as well as a strong correlation with the minimum viscosity parameter α min . In general, there are two regions of outburst, the inner Region I and outer Region II. The outburst of Region I is caused by the MRI mechanism and thermal instability, while neither the MRI, the GI, nor the thermal instability causes the outburst of Region II. Our analysis suggests that the outer Region II is dominated by, or largely related to, the Rosseland mean opacity κ R and the α min parameter. [ABSTRACT FROM AUTHOR]

Background: Youth experiencing homelessness (YEH) suffer from poorer physical and mental health outcomes than stably housed youth. Additionally, YEH are forced to navigate fragmented health and social service systems on their own, where they often get lost between systems when transitioning or post-discharge. Inevitably, YEH require support with health system navigation and healthcare coordination. The aim of this study is to understand interactions within and between the emergency youth shelter (EYS) and health systems that affect healthcare coordination for YEH in Toronto, Canada, and how these interactions can be targeted to improve healthcare coordination for YEH. Methods: This study is part of a larger qualitative case study informed by the framework for transformative systems change. To understand interactions in healthcare coordination for YEH within and between the EYS and health systems, we developed a causal loop diagram (CLD) using in-depth interview data from 24 key informants at various levels of both systems. Open and focused codes developed during analysis using Charmaz's constructivist grounded theory methodology were re-analysed to identify key variables, and links between them to create the CLD. The CLD was then validated by six stakeholders through a stakeholder forum. Results: The CLD illustrates six balancing and one reinforcing feedback loop in current healthcare coordination efforts within the EYS and health systems, respectively. Increasing EYS funding, building human resource capacity, strengthening inter and intra-systemic communication channels, and establishing strategic partnerships and formal referral pathways were identified among several other variables to be targeted to spiral positive change in healthcare coordination for YEH both within and between the EYS and health systems. Conclusions: The CLD provides a conceptual overview of the independent and integrated systems through which decision-makers can prioritize and guide interventions to strengthen healthcare coordination within and between the EYS and health systems. Overall, our research findings suggest that key variables such as streamlining communication and improving staff–youth relationships be prioritized, as each of these acts interdependently and influences YEH's access, quality and coordination of healthcare. [ABSTRACT FROM AUTHOR]

This is the tenth in a series of articles to help readers increase their knowledge and, in the process, enhance their skill and confidence in appraising, synthesizing, interpreting, and ultimately deciding if a given piece of evidence should be incorporated into practice. This article describes the various ways variables are defined, measured, and described in research articles. [ABSTRACT FROM AUTHOR]

This article analyzes the challenge that China faces in achieving its goal of a high economic growth rate for the XIV Five-Year Economic and Social Development Plan (FYESDP) 2021-2025 period, given the context of uncertainty that the global economy is still experiencing, and the domestic conditions that the country is going through after the second wave of COVID-19 contagion in the second half of 2022. The hypothesis is that China has managed to register an economic growth rate in accordance with the targets planned in the XIV FYESDP period between 2021 and 2023, thanks to the use of an ad hoc of instruments and variables of the economic policy. [ABSTRACT FROM AUTHOR]

Collections of lymphocytes to be genetically modified to treat hematologic malignancies have seen a dramatic increase over the last few years as commercial products have been approved. Reports of new products in development that can possibly treat solid organ malignancies represent a massive change in the field. Apheresis is at the center of the collection of cells for the manufacture of these chimeric‐antigen receptor therapy products. The expansion of these collections represents one of the areas of apheresis procedures growth. This review will summarize concepts important to this type of collection and variables that need to be optimized to obtain desired cell yields while increasing patients' safety. [ABSTRACT FROM AUTHOR]

Objective: To determine the reason that why laparoscopic cholecystectomy should be shifted to open surgery. Study Design: Retrospective study. Setting: Department of General Surgery, LRH, Peshawar. Period: January 1, 2018 and December 31, 2021. Material & Methods: The study included 256 people who were scheduled for laparoscopy but later switched to laparotomy, while the remaining 258 patients who did not switch were included in the control group. They were divided into two groups using sealed opaque envelopes with randomly generated computer numbers. Variables considered for switching included anatomical abnormalities, gender, age, acute and chronic cholecystitis, inflammatory infiltration, peritoneal adhesions, cardiac disease, hypertension, neurological disorders, diabetes, and other medical conditions of the patient. Variables were compared using the chi-square test with a statistical significance level of 5%. Odds ratios (OR) and 95% confidence intervals (CIs) were calculated. Results: The mean age of the intervention group was 64 years, compared to 54 years for the control group. There was highly significant difference between the two groups regarding age, gender, anatomical abnormalities, acute and chronic cholecystitis, inflammatory infiltration, cardiac disease, hypertension, neurological disorders conversion variable from laparoscopy to laparotomy. Conclusion: Proper treatment planning and consideration of studied variable before decision of the choosing the procedure is required. [ABSTRACT FROM AUTHOR]

Zooplankton is the main food source for higher trophic levels in marine environments. In the Southern Ocean, the distribution of zooplankton is related to the physical gradient of the Antarctic Circumpolar Current (ACC) fronts. Our objective was to determinate the distribution of mesozooplankton in relation to the ACC fronts in the Drake Passage. Samples were collected with the Continuous Plankton Recorder in two transects. Mesozooplankton was associated with environmental variables. High mesozooplankton abundances were recorded in the Subantarctic Front in 2017 and in the Antarctic Zone in 2016. A total of 81 taxa and 23 species in 2016 and 31 in 2017 were identified. Copepoda was the most abundant group (89%), and Centropages brachiatus (3 872 ind. m−3) and Oithona spp. (2 916 ind. m−3) were the most abundant copepod taxa. Mesozooplankton abundance and composition were influenced by front variability. Taxa were contracted northward on 2016 and displaced southward in 2017 and linked to chlorophyll a (Chl a) values recorded in the coastal shelf of South America. Chl a values registered close to Antarctic Peninsula were not linked to mesozooplankton abundance. Changes in abundances of certain taxa may reflect distinct climate events. These changes may impact the availability of prey for higher trophic levels, either through displacement for food or food availability. [ABSTRACT FROM AUTHOR]

In the context of the existing buildings, in recent years the concept of maintenance has changed from corrective maintenance to preventive maintenance, which is based in part on periodic inspections. There is ample evidence that preventive maintenance is more efficient than corrective maintenance, since severe deteriorations that may represent danger to people are avoided, and also money is saved. To make periodic inspections of the buildings is useful to quantify the extent to which deteriorations are severe or not, in order to facilitate decision making and prioritise therapeutic interventions. To this purpose, many scales have been used and are used to assess the degree of severity of the deteriorations in constructive elements. But it is important to say that there is no common consensus and these scales are different between them according to the study to which they belong. Thus, the main goal of this article is to propose a methodology for calculating the degree of severity of damages in buildings, which is of widespread use. This calculation method, based on one hand in a distribution of values and on the other hand in a single value (scalar), lets to calculate the severity index of systems and of the entire building, and it is easy to use and flexible. [ABSTRACT FROM AUTHOR]

The research was developed in the areas of the Jucaibama's Agricultural Experiment Station perteneciente to Investigaciones's Institute Agricultural Jorge Dimitrov. The objective was to evaluate the behavior of the yield and some of its components, nine cultivars of soybean, in the little rainy epoch on a mellow Fluvisol soil. Nine soybean cultivars were used (IS-36, William-82, Brillante, Vencedora, IS-1, DT-99, Duocrop, IS-27, IS-24), the sow accomplished in the month of December in 0.70 m between furrows and 0.05 m between plants. Plots of land of four furrows of five meters in length, for a total area of 14 m2 were utilized, in a design at blocks at random with four replies. An analysis of variance of double classification and the multiple comparison of stockings was executed by means of Tukey's test for p=0.05. Different answers between cultivars in all the evaluated variables were observed and all cultivars showed superior yields to 1 t ha-1, with values that oscillated between 1.05 and 1.86 t ha-1. [ABSTRACT FROM AUTHOR]

Background: Lung cancer is a major global threat to public health for which a novel predictive nomogram is urgently needed. Non-small cell lung cancer (NSCLC) which accounts for the main port of lung cancer cases is attracting more and more people's attention. Patients and methods: Here, we designed a novel predictive nomogram using a design dataset consisting of 515 pulmonary nodules, with external validation being performed using a separate dataset consisting of 140 nodules and a separate dataset consisting of 237 nodules. The selection of significant variables for inclusion in this model was achieved using a least absolute shrinkage and selection operator (LASSO) logistic regression model, after which a corresponding nomogram was developed. C-index values, calibration plots, and decision curve analyses were used to gauge the discrimination, calibration, and clinical utility, respectively, of this predictive model. Validation was then performed with the internal bootstrapping validation and external cohorts. Results: A predictive nomogram was successfully constructed incorporating hypertension status, plasma fibrinogen levels, blood urea nitrogen (BUN), density, ground-glass opacity (GGO), and pulmonary nodule size as significant variables associated with nodule status. This model exhibited good discriminative ability, with a C-index value of 0.765 (95% CI: 0.722-0.808), and was well-calibrated. In validation analyses, this model yielded C-index values of 0.892 (95% CI: 0.844-0.940) for external cohort and 0.853 (95% CI: 0.807-0.899) for external cohort 2. In the internal bootstrapping validation, C-index value could still reach 0.753. Decision curve analyses supported the clinical value of this predictive nomogram when used at a NSCLC possibility threshold of 18%. Conclusion: The nomogram constructed in this study, which incorporates hypertension status, plasma fibrinogen levels, BUN, density, GGO status, and pulmonary nodule size, was able to reliably predict NSCLC risk in this Chinese cohort of patients presenting with pulmonary nodules. [ABSTRACT FROM AUTHOR]

The current study aims to assess the structure's reliability using stochastic Hermite surface methodology. This approach uses series expansion of standard normal random variables to model uncertainty. (i.e., polynomial chaos expansion). The coefficients of the polynomial chaos expansion are found through stochastic collocation, which only requires a few performance function evaluations. After determining the order of the polynomial and its coefficients, first order methods calculates the reliability index. To demonstrate the applicability of the suggested based reliability analysis, failure rates were used and the duration for the evaluated were set to be 360 days. Numerical result are provided on monthly basics. On the other hand, to achieve our goal, we proposed the 2-parameter modified Weibull distribution. The simulation was performed using Maple software. The evaluation for each subsystem was displayed in the result and analyses section. The conclusion, however, draws a broad conclusion about the study. [ABSTRACT FROM AUTHOR]

The present investigation arose from the current problem in the entire territory of the Department of Atlántico in the Republic of Colombia, in which the livestock sector currently lacks a reliable modernization that contributes to the planning and profitability of meat production, translated into weight gain. The main focus of the study gravitated around the ignorance of the real effect exerted by meteorological and nutritional factors on the weight gain of cattle. As a possible solution, it was proposed to carry out a statistical analysis by means of a multiple linear regression model where cattle weight gain was the dependent variable to study under the influence of the following independent variables: accumulated precipitation for two weeks (mm), average daily precipitation for two weeks (mm), average daily forage height consumed for two weeks (cm), percentage daily average of forage consumed during two weeks (%), average protein percentage of forage consumed during two weeks (%), the average maximum temperature recorded during two weeks (°C), the average minimum temperature recorded during two weeks (°C), average daily temperature variation recorded for two weeks (°C) and average relative humidity recorded for two weeks (%). All independent data values were collected in the field. Once the analysis was carried out, it was concluded that there was statistical evidence to affirm that only the independent variables "accumulated precipitation", "average precipitation", "average minimum temperature" and "relative humidity" significantly influenced the changes observed in profit of cattle weight, being formulated a multiple linear regression model that contained only the mentioned variables, the rest were discarded. On the other hand, for the constructed linear regression model, the coefficient of determination R2 = 89.3691% was obtained, that is, for the significance level α = 0.05 (95% confidence level), this determined that the model of Multiple linear regression (A) explained the behavior of the average monthly cattle weight gain by 89.3691%. It was concluded, therefore, that the present work gives veracity to the determination of previous investigations where it is also concluded that the meteorological variables directly affect the changes associated with the weight of cattle for meat production. [ABSTRACT FROM AUTHOR]

Aims: Standardized data definitions are necessary for the quantification of quality of care and patient outcomes in observational studies and randomised controlled trials (RCTs). The European Unified Registries for Heart Care Evaluation and Randomised Trials (EuroHeart) project of the European Society of Cardiology (ESC) aims to create pan-European data standards for cardiovascular diseases and interventions, including transcatheter aortic valve implantation (TAVI). Methods and results: We followed the EuroHeart methodology for cardiovascular data standard development. A Working Group of 29 members representing 12 countries was established and included a patient representative, as well as experts in the management of valvular heart disease from the European Association of Percutaneous Cardiovascular Interventions (EAPCI), the European Association of Cardiovascular Imaging (EACVI) and the Working Group on Cardiovascular Surgery. We conducted a systematic review of the literature and used a modified Delphi method to reach consensus on a final set of variables. For each variable, the Working Group provided a definition, permissible values, and categorized the variable as mandatory (Level 1) or additional (Level 2) based on its clinical importance and feasibility. In total, 93 Level 1 and 113 Level 2 variables were selected, with the level 1 variables providing the dataset for registration of patients undergoing TAVI on the EuroHeart IT platform. Conclusion: This document provides details of the EuroHeart data standards for TAVI processes of care and in-hospital outcomes. In the context of EuroHeart, this will facilitate quality improvement, observational research, registry-based RCTs and post-marketing surveillance of devices, and pharmacotherapies. One-sentence summary: The EuroHeart data standards for transcatheter aortic valve implantation (TAVI) are a set of internationally agreed data variables and definitions that once implemented will facilitate improvement of quality of care and outcomes for patients receiving TAVI. [ABSTRACT FROM AUTHOR]

Quercetin is an ancient flavonoid applied immensely as a therapeutic active for broad activity. Though efficacious, its physicochemical properties are not favorable for formulating it into a suitable dosage form, which reduces its therapeutic utility. In this research article, we developed quercetin-loaded nanocochleates by using liposomes as a precursor for nanocochleates. Liposomes were formulated by ethanol injection method and optimized using Box Behnken design with three independent variables: the amount of lipid, amount of cholesterol, and stirring speed and three dependent variables such as particle size, encapsulation efficiency, and drug release. The optimized formulation showed particle size, zeta potential, encapsulation efficiency, and drug release of 160.5 ± 1.970 nm, −27.4 mV, 76.69 ± 0.944%, and 85.83 ± 1.745%, respectively. These optimized liposomes were further converted to nanocochleates by using the trapping method. The nanocochleates were analyzed for various parameters such as particle size, zeta potential, encapsulation efficiency, and drug release studies and found to be 327 ± 3.681 nm, −16.8 mV, 83.28 ± 0.90%, and 80.12 ± 1.30% up to 24 h. Hence, this novel approach can be utilized as a better therapeutic option for quercetin and a novel carrier for encapsulating quercetin. [ABSTRACT FROM AUTHOR]

This cross-sectional study aimed to determine the prevalence of depression, anxiety, and stress among undergraduate dental students at Sofia Medical University and to investigate its associations with some demographic, educational and pandemic-related variables. A self-reported questionnaire that included the validated DASS-21 scale was administered to a group of 2nd, 3rd, 4th, and 5th year students (n=70, response rate 95.7%). Results indicated abnormal levels of depression, anxiety, and stress in 34.3%, 65.7% and 59.7% of the participants, respectively. A much larger proportion of females suffered from abnormal levels of anxiety (56.6%) as compared with males (9%), p=.003. Single students exhibited significantly higher level of depression (25.4%) than those having a partner (9%), p=.037. Third-year dental students demonstrated higher level of depression (19.4%) compared to 5th year students (1.5%), p=.007 as well as higher stress scores (25.4%) than 2nd year students (17.9%), p=.035. Academic performance (assessed by GPA in this study), dentistry as the first students’ choice when applying for MUS, financial responsibilities, and pandemic-related academic responses were not found significant factors for depression, anxiety, and stress (p>.05). These outcomes highlight the need to provide psychological support programs with special attention on susceptible groups. Dental students should implement preventive measures and adopt coping strategies to manage stress and reduce levels of anxiety and depression. [ABSTRACT FROM AUTHOR]

The research "Impact Assessment of the Agua Fuente de Vida Project on the rural and community aqueducts of the eastern corridor of Pasto in the 2016-2020 observation window" was carried out, from the technical, environmental, administrative-accounting, and psychosocial components through of 3 specific objectives: 1) Identify the results in each of the project components, 2) Analyze the results of the variables, and 3) Establish the methodology for strengthening community aqueducts. Therefore, this article focuses on the diagnostic methodology used to assess the conditions of the aqueducts at time t (2022), after the observation window, through the analysis of variables for each component. Results for each component are disclosed and it is concluded that all the variables used are pertinent to carry out a diagnosis as a basis for the evaluation of the impact on community and rural aqueducts in the municipality of Pasto. [ABSTRACT FROM AUTHOR]

Media convergence, which occurs due to the development and spread of new communication technologies, enables new audience experiences. In this context, it is a current research area that the audience watches television programs from which devices and environments. From this point of view, this study aims to determine the new audience experiences by revealing the variables that affect the choice of the devices and environments in which dramas, one of the television programs types, are watched. In the study, a scale based on field research was developed, and the devices and environments in which the participants watched television dramas were tried to be determined within the scope of demographic variables. In the study applied on 18 and 55 years old, the participants were included in the research by modeling on the particular population from the sampling technique based on probability calculations. Therefore, the specific main mass of the study consists of the participants watching television dramas. The people selected according to the sample structure in question were determined as n240, and the k=03 design factor was used. As a result of the study, it was concluded that variables such as gender, age, marital status, education level, and socio-economic status affected the devices and environments in that the participants preferred to watch television dramas and showed significant differences. Concerning this, it has been seen that media convergence offers participants an alternative viewing experience in different environments. [ABSTRACT FROM AUTHOR]

As an activity "of intervention on the activity of others" (Barbier, 2011, p. 62), when conceived as the experience that emerges from the dynamic coupling between an actor and his/her environment in a situation of facilitating a work group, the manager's activity remains largely hidden to an outside observer. To understand it, one therefore requires methods that reveal the way in which the managers construct a point of view on the activity of those they are supervising. With a view to achieving such understanding, this research proposes to document the variables of the situation relating to the activity of the supervisees, to their states and to their evolution according to the situational transformations that the manager takes into account in order to know, do and control what is to be done (Tourmen, 2014). To this end, our research examines the experience of army cadets during a training course. The results show how, in order to deploy their activity, the managers combine two simultaneous perspectives on the situation: their own; the one they attribute to others and which they infer from combinations of information gathered about the group and its members, the environment, the performance of the task and their own activity (what they think, do and feel). This research sheds additional light on what the activity-based approach can contribute to the understanding of a complex activity such as that of the managers, in particular by documenting it not only from the description of what they do (Mintzberg, 1984) but also from what they live and experience within themselves and with others. It leads to a range of proposals for the training of future managers. [ABSTRACT FROM AUTHOR]

I review Farewell to Variables, a recent edited volume by cultural psychologists collaborating with Jaan Valsiner. I relate "variable thinking" to challenges faced in conducting qualitative research, and in relating to everyday life. [ABSTRACT FROM AUTHOR]

Based on the TESS (Transiting Exoplanet Survey Satellite) phase dependent light curves, we confirm the eclipsing type variability nature for two G-type dwarfs: TYC 1417-891-1 and TYC 1478-742-1. Both objects show EA (Algol-type) light curves morphology. Orbital period for TYC 1417-891-1 is P ≈ 8.0 day and for TYC 1478-742-1, P ≈ 13.6 day. We present Gaia EDR3 and TESS catalogue important physical parameters as well as LAMOST spectra. Both objects are relatively bright and are located at a distance of 260.59 (±3.21) pc (TYC 1417-891-1) and 117.42 (±0.74) pc (TYC 1478-742-1). The TESS light curve of TYC 1478-742-1 shows also flares as well. We discuss possible nature of the secondary and faint objects around these stars. [ABSTRACT FROM AUTHOR]

Adolescence is a period of storm and stress which is marked by many behavioural anomalies, of which thinking and contemplating about suicide is a major source of concern. Many personality variables and inner vulnerabilities may prompt an individual towards the end of extreme negativity. The present study aimed to determine personality profile differences between morbid and morbidity-free groups amongst early and late adolescents. The scores on the General Health Questionnaire 28 were used to segregate the students into "Morbid" and "Morbidity-free" Groups by the method of Median Split. Results revealed that suicidal ideation, happiness and locus of control differed significantly between morbid and morbidity-free groups for the early adolescents. Morbid group had high scores on suicidal ideation, aggressive humor, self-defeating humor and locus of control. On the other hand, Morbidity-free group scored high on another set of variables like reasons for living, affiliative humor, self-enhancing humor and happiness. For the late adolescent group divided into morbid and morbidity-free groups, the psychosocial variables revealed a similar pattern of mean magnitude values. The two groups revealed significant difference on suicidal ideation, affiliative humor, aggressive humor, self-defeating humor, happiness and locus of control. The results indicate the importance of screening individuals for underlying vulnerability in order to predict other behavioural anomalies. [ABSTRACT FROM AUTHOR]

Corporate Social Responsibility is a subject widely covered in the scientific literature from different approaches and perspectives, with a growing application in business practice. The banking sector has not been exempt from this influence and it is recognized that banking institutions are characterized by the assumption of social responsibility in their business philosophy and the publication of sustainability reports, which seek to make visible the social impacts of their activity. The objective of this study was to determine the variables for the measurement of social responsibility and the social impact of banks with a view to the preparation of sustainability reports in the Cuban banking sector. The methodology used corresponds to a mixed, cross-sectional, nonexperimental approach research, where the content analysis technique and the Matrice d' Impacts Croisés Multiplication Appliqués à un Classement strategic prospective technique were used. At the theoretical-conceptual level, a definition of Banking Social Responsibility contextualized to the particularities of Cuban banking is proposed. As a result, 17 variables were determined, conceptualized and classified by the triple dimension of social responsibility, of which 12 were classified as key and six as potentially strategic, where capital yield, communication, information and innovation and dissemination stand out. 58.8% of the identified variables correspond to the social dimension. The result of this study creates the bases for the design of indicators contextualized to the country's banking activity, but considering the international experience on the subject. [ABSTRACT FROM AUTHOR]

This paper reviews the organizational awareness and marketing preferences of members of producer organizations in agriculture. The main material of this research consisted of surveys applied to 360 producers determined via the Proportional Sampling Method in Uşak province, Turkey. According to the research results, each of the producers was a member of at least one Producers' Organization (PO). 59.1% of producers were interested in the PO, and 33.6% of them think that crops should be marketed by the Agricultural Development Cooperative. The ratio of member producers marketing their products through the POs was 19.7%. Only 38.4% of members were satisfied with the selling price of products. The POs in the region were generally successful, and the most successful one was also the Agricultural Development Cooperative with 72.3%. In the study, marketing prices, satisfaction with being a member of the POs, and satisfaction with the organizational management variables were tested by the Chi-square, and it was viewed that there was no significant difference among them. The study is important in increasing the effectiveness of the POs in all areas of agriculture and improving the organizational awareness of their members. [ABSTRACT FROM AUTHOR]

Pulsating variable δ Scuti stars are intermediate-mass stars with masses in the range of 1–3 δ and spectral types between A2 and F2. They can be found at the intersection of the Cepheid instability strip with the main sequence. They can be used as astrophysical laboratories to test theories of stellar evolution and pulsation. In this contribution, we investigate the observed period–colour and amplitude–colour (PCAC) relations at maximum/mean/minimum light of Galactic bulge and Large Magellanic Cloud δ Scuti stars for the first time and test the hydrogen ionization front (HIF)-photosphere interaction theory using the mesa-rsp code. The PCAC relations, as a function of pulsation phase, are crucial probes of the structure of the outer stellar envelope and provide insight into the physics of stellar pulsation and evolution. The observed behaviour of the δ Scuti PCAC relations is consistent with the theory of the interaction between the HIF and the stellar photosphere. [ABSTRACT FROM AUTHOR]

The instability strip (IS) of classical Cepheids has been extensively studied theoretically. Comparison of the theoretical IS edges with those obtained empirically, using the most recent Cepheids catalogs available, can provide us with insights into the physical processes that determine the position of the IS boundaries. We investigate the empirical positions of the IS of the classical Cepheids in the Large Magellanic Cloud (LMC) using data of classical fundamental-mode and first-overtone LMC Cepheids from the OGLE-IV variable star catalog, together with a recent high-resolution reddening map from the literature. We studied their position on the Hertzsprung-Russell diagram and determined the IS borders by tracing the edges of the color distribution along the strip. We obtain the blue and red edges of the IS in V - and I -photometric bands, in addition to T eff and log L ⊙. The results obtained show a break located at the Cepheids' period of about 3 days, which was not reported before. This phenomenon is most likely explained by the depopulation of second and third crossing classical Cepheids in the faint part of the IS, since blue loops of evolutionary tracks in this mass range do not extend blueward enough to cross the IS at the LMC metallicity. Furthermore, our empirical borders show good agreement with theoretical ones published in the literature. This proves that our empirical IS is a useful tool to put constraints on theoretical models. [ABSTRACT FROM AUTHOR]

In the present paper, we report the photometric and spectroscopic observations of the pulsating star BL Cam obtained by the 1.88 m telescope at the Kottamia astronomical observatory (KAO). Fourier analysis of the light curves indicates one frequency, 25.14427 c/d, with harmonics 51.112 c/d, 33.388 c/d, and 17.72464 c/d. The frequency of 31-32 c/d reported in the literature is not detected in our data except for one close to 33.3882934 c/d. A total of 55 new times of maximum light have been presented. A new value of (1/P) dP/dt is estimated using the O-C diagram based on all newly obtained times of maximum light combined with those taken from the literature, assuming the periods are decreasing and changing smoothly. Using model atmosphere analysis, we computed the effective temperature and surface gravity as Teff = 7625 ± 300 K and logg = 4.30 ± 0.37. The bolometric magnitude Mbol = 2.335, radius R = 1.69 R⨀, luminosity L = 0.957 L⨀, the mass M = 1.68M⨀, and pulsation constant Q = 0.025 days. Locations of the star on the M-R and M-L diagrams indicate that it is close to the ZAMS track and is an unevolved star. [ABSTRACT FROM AUTHOR]

This is qualitative research with an exploratory approach and its objective is to define the variables of regional risk for the financial evaluation of investment capital attracted to the Catatumbo region. This research is developed from the combination of risk models such as the CAPM and the country risk, making an adaptation of these two to the financial regions of the region, where we can see that there are countries with political risks similar to that of the region and their investment percentage is very low. Data provided by the Chamber of Commerce of Ocaña show that the industrial investment of attracted capital is minimal or almost null, unlike the commercial sector where this investment is reflected to some extent, as can be seen with the nationally known supermarkets. Concluding that the regional risk of the industrial sector in the Catatumbo region is of little interest to investors and that the factors involved are very high and make the return on capital very costly, this being the risk premium and at the same time not being attractive for attracted investments. [ABSTRACT FROM AUTHOR]

The accumulation of plastic waste in the marine environment has increased the global risk of marine pollution due to its negative impact on land, ecosystems, and especially the food chain and marine organisms. Ineffective plastic waste management has reduced the quality of the coastal environment including community sanitation and health, landscapes, and coastal views, and influenced economic sectors such as tourism, fisheries, and shipping. The economic and public activities within coastal areas have consistently as the source of plastic waste leakage either directly or indirectly. Various variables involved and connected each other, some influential and other existing variables were not working effectively and do not support each other optimally in the system. The policy without limitation on the plastic production and certain type of plastic such as packaging or single-use, bags, and a lack of management capacity have led to the establishment of a burden on current plastic waste management within the coastal and marine of Jakarta Bay. Therefore, the study aims to analyze the roles and interrelation of variables that influence plastic waste management in Jakarta Bay. Public participation through group discussion, interview, and Micmac analysis method was used to identify, map, and analyze their interrelationships, roles, and hierarchy in the plastic waste management system. The results showed that the dynamics of variables' interaction affect their level of performance and contribution. The variables with strong influence have the potential to strengthen others, while some had a high dependence which was vulnerable to have ineffective performance in the waste management system as their stability relied on other variables' performance. A group of variables were greatly affected by others and indicates that they had lower influence and higher dependence, while the rest of the variables were relatively disconnected from the system. The key to better waste management is to improve the performance and the quality of relationships of variables that were found in the influential and intermediate quadrants. Furthermore, the indirect influence variables also need to be considered as they have the potential to contribute to the future system strategy or scenario planning. [ABSTRACT FROM AUTHOR]

A characterization study was performed to verify the more relevant physicochemical properties for quartz flocculation with polyacrylamide, as well as to define which variables should be further investigated regarding this flocculation system. Polyacrylamide was evaluated through molecular weight, radius of gyration, and infrared spectrometry. A natural quartz sample was investigated regarding its particle size distribution, specific surface area, mineralogical and chemical composition. The zeta potential of quartz with flocculant and surfactant was also analyzed. The results indicated that the quartz had high purity and particle sizes between 38 and 10 µm, which was within the intended particle size range; the flocculant presented a suitable molecular weight for the proposed flocculation system. Based on literature, nine variables were chosen to be investigated in Part II of this study: flocculant and surfactant concentration, flocculant and surfactant conditioning time, flocculation addition time, agitation intensity, pH of the suspension, flocculation time, and solid concentration. [ABSTRACT FROM AUTHOR]

In this study, we investigated how secondary students interpret algebraic expressions that contain literal symbols to stand for variables. We hypothesized that the natural number bias (i.e., the tendency to over-rely on knowledge and experiences based on natural numbers) would affect students to think that the literal symbols stand for natural numbers only rather than for any rational or real number (integrity effect); and that the arithmetical values of the algebraic expressions are of the same sign as the expressions’ phenomenal sign (phenomenal sign effect). The participants (138 8th and 9th graders) were asked to evaluate 48 statements about numbers that can or cannot be assigned to six algebraic expressions that contained literal symbols (e.g., a, -d-4). The results supported the main hypothesis of the study with respect to the integrity as well as the phenomenal sign effect and also indicated that the former was stronger than the latter. Additionally, the most salient characteristics of the form of each expression, such as its sign, appeared to affect students’ responses regarding the arithmetical values they may represent. Theoretical and educational implications are discussed. [ABSTRACT FROM AUTHOR]

Background: The demand for quality maternal and child health (MCH) data is critical for tracking progress towards attainment of the Sustainable Development Goal 3. However, MCH cannot be adequately monitored where health data are inaccurate, incomplete, untimely, or inconsistent. Thus, this study assessed the level of MCH data quality.Method: A facility-based cross-sectional study design was adopted, including a review of MCH service records. It was a stand-alone study involving 13 healthcare facilities of different levels that provided MCH services in the Cape Coast Metropolis. Data quality was assessed using the dimensions of accuracy, timeliness, completeness, and consistency. Health facilities registers were counted, collated, and compared with data on aggregate monthly forms, and a web-based data collation and reporting system, District Health Information System (DHIS2). The aggregate monthly forms were also compared with data in the DHIS2. Eight MCH variables were selected to assess data accuracy and consistency and two monthly reports were used to assess completeness and timeliness. Percentages and verification factor were estimated in the SPSS version 22 package.Results: Data accuracy were recorded between the data sources: Registers and Forms, 102.1% (95% CI = 97.5%-106.7%); Registers and DHIS2, 102.4% (95% CI = 94.4%-110.4%); and Forms and DHIS2, 100.1% (95% CI = 96.4%-103.9%). Across the eight MCH variables, data were 93.2% (95% CI = 82.9%-103.5%) complete in Registers, 91.0% (95% CI = 79.5%-102.5%) in the Forms, and 94.9% (95% CI = 89.9%-99.9%) in DHIS2 database. On the average, 87.2% (95% CI = 80.5%-93.9%) of the facilities submitted their Monthly Midwife's Returns reports on time, and Monthly Vaccination Report was 94% (95% CI = 89.3%-97.3%). The overall average data consistency was 93% (95% CI = 84%-102%).Conclusion: Given the WHO standard for data quality, the level of MCH data quality in the health care facilities at the Cape Coast Metropolis, available through the DHIS2 is complete, reported on timely manner, consistent, and reflect accurately what exist in facility's source document. Although there is evidence that data quality is good, there is still room for improvement in the quality of the data. [ABSTRACT FROM AUTHOR]

The Constantine tramway line in Algeria has many variables that can be analysed to assess the impact of the line. These variables include social ones, such as the rational supply of transport between different modes of travel, the place of people with reduced mobility in the supply and interior and exterior design. Moreover, the economic variables that are the most dominant in relation to its importance in the development of the economy of the city are the reliability and comfort made to the regularity of the transport time in relation to time savings and intermodality at stopping points. To this end, this article examines these different variables during several commissioning periods in order to determine the impact of the introduction of the tramway line in the Constantine metropolitan area. Its approach is carried out through a field survey, interviews and on-site observations with a population made up of users of different travel modes. The results confirm that the tramway line linking the city of Constantine and the new town of Ali Mendjeli has a strong effect on ridership. On the other hand, its effects seem minimal in terms of rational supply and intermodality between different travel modes. Meanwhile, reliability and regularity are topics that deserve to be explored. The accessibility of people with reduced mobility is considered a primary objective of the tramway system. [ABSTRACT FROM AUTHOR]

Social anxiety becomes one of the main obstacles for undergraduate students, in social interactions and situations. This study aimed to determine a correlation between anxiety experienced due to socializing and alcohol intake amongst undergraduate students, male and female, in India. The study involves 98 undergraduate students, between the age ranges of 17-23 years. The Social Interaction Anxiety Scale (SIAS), developed by Mattick and Clarke in 1998 and the measurement of alcohol intake was done using the Alcohol Use Disorders Identification Test (AUDIT), developed by the World Health Organization (WHO). The relationship between the two variables showed that one did not influence the other. [ABSTRACT FROM AUTHOR]

Maturity at harvest is one of the most important properties that determine the final quality of the apple fruit. Appearance, texture, flavour and nutritional value are qualities that consumers evaluate empirically to decide whether to eat the fruit again. Within agricultural practices in and out of the orchard, the relationship between plant nutrition and fruit quality is important, and proper nutrient balance is essential to maintain fruit quality. This research work was carried out on 'Golden Delicious' and 'Red Chief' apple trees. A 56 factorial arrangement was used, with 5 concentrations and 6 factors, 25 treatments in a Taguchi L25 structure. Improvements were found in parameters for fruit finish and fruit quality. The factors with the greatest positive effect on quality in order of importance were Salicylic Acid (SA) 1.0 mM, Potassium (K) 58.90 mM, Molybdenum (Mo) 0.516 mM, Calcium (Ca) 70.00 mM and Cobalt (Co) 8.248 mM and in order of importance the following variables: TSS/acidity ratio, total soluble solids TSS, antioxidant capacity (AC), total phenols (TF), and titratable acidity (TA) in 'Golden Delicious' apple. Considering 'Red Chief', the factors Ca 70.00 mM, K 58.79 mM and SA 1.0 mM, with the variables; TA, TSS/acidity ratio, TF, TSS and AC that finally lead to an optimal development of finish and quality in the apple fruit. [ABSTRACT FROM AUTHOR]

Introduction: Disability has always been the subject of many stereotyped views and prejudiced that have been modified over time. These attitudes can be learned in childhood and later to be developed positively or negatively. Methodology: Present descriptive cross-sectional study tried to observe and analyze the attitudes of 460 people surveyed towards people with disabilities, considering different variables, areas and contexts, applying Escala de actitudes hacia las personas con discapacidad. Forma G, of Verdugo, Arias y Jenaro. Results and conclusions: The results showed positive attitudes that are influenced by some variables such as contact with people with disabilities, sex, academic and work area and type of disability they know. Originality: It is intended to open a space for debate to contemplate a possible future remodeling of the scale applied to update its terms and items and reduce the ambiguity of the instrument. [ABSTRACT FROM AUTHOR]

Background and Context: Most studies about programming misconceptions are conducted at the undergraduate and graduate levels. Since the age level for starting learning programming is getting lower, there is a need for determining programming misconceptions for younger learners. Objective: Our goal is to determine programming misconceptions and their time‐resistance for programming novices at the K‐12 level using Python as a text‐based programming language. Method: We conducted research in the school settings during informatics classes among 98 fifth‐grade students in three elementary schools. We analysed the data collected from two Python tests students took immediately after programming lectures and 5 months later. Results and Conclusions: We detected seven misconceptions: (a) Assigning the expression instead of the calculated value, (b) When reassigning the variable value, assigning the sum value to the variable, (c) Using the symbolic name of the variable instead of its value, (d) Using the first (or previously) assigned variable value, (e) Datatype misconception, (f) Sequencing misconception, and (g) Swapping variable values. By shifting focus on variables and spending more time introducing variables and sequencing during teaching, the appearance of known misconceptions is minimized compared to previous findings. Lay Description: What is already known about this topic: Programming misconceptions are known issues since the beginning of learning programming in the early 1980sMost programming misconceptions are time resistant.Most studies about misconceptions are conducted at the undergraduate and graduate levels. What this paper adds: The goal of the study is to determine programming misconceptions for programming novices at the K‐12 level.Three more misconceptions about basic programming concepts are revealed compared to the previous findings.By shifting focus on variables and spending more time introducing variables and sequencing during teaching, the appearance of known misconceptions is minimized. Implications for practice and/or policy: Being aware of misconceptions is an important aspect of a teacher's pedagogical knowledge to foster students learning.Aiming to prevent the known misconceptions, teachers can minimize it by interventions during teaching.The educators should emphasize the underlying conceptual programming concepts rather than syntactic ones related to the programming language. [ABSTRACT FROM AUTHOR]

In Ecuador, cassava production is one of the three raw materials with the highest annual growth rate, to get into the snacks market, it is necessary to maintain competitive products and prices due to the high supply. This study search how to relate the needs and expectations of customers with the design requirements of cassava snacks to increase the productivity and competitiveness of the company through the methodology of continuous improvement or quality function deployment. The 384 surveys were conducted and through the Likert measurement it was evidenced that there are variables such as flavor, standards fulfillment and texture. Where the technical solutions are related to the quality of the starchy vegetable and processes like frying time controlled by the quality department. The selection of the product characteristics over the competition through arrays was guaranteed and the demand for the product and sales revenues were increased. [ABSTRACT FROM AUTHOR]

Background: Primary dysmenorrhea is a common and often debilitating, gynaecological condition. Objective: To investigate the effects of specific lifestyle variables on the prevalence and severity of primary dysmenorrhea. Materials and Methods: A cross-sectional study of Jordanian women aged between 18– 25 years old utilized a questionnaire as the main instrument of the study. Results: Primary dysmenorrhea was reported by 660 women out of 1988. It was found that approximately two thirds of them were students. Overall, 54.5% of the participants reported severe dysmenorrhea. A statistically significant correlation was found between severe dysmenorrhea and smoking at p value ˂0.001, sleeping less than 7 hours per 24 hours at p = 0.005, holding a university degree at p = 0.032, non-alcohol consumption at p = 0.044, frequent energy, fizzy, tea, coffee drinks and sugar intake. Interestingly, we found that severe dysmenorrhea was statistically significantly associated with women who never eat meat at p ˂0.001, cereals and fish consumers and with those who take less than 3 servings of fruit or none at all per week at p = 0.006. In addition to the previous variables, water intake of less than 1.0 litre a day, irregular cycles, non-OCP use and positive family history were found significantly associated with severe dysmenorrhea. Severe dysmenorrhea was significantly related to working less hours per week, higher stress level and longer bleeding duration at p = 0.021, 0.017 and 0.008, respectively. On the other hand, there was no statistically significant difference found between severe dysmenorrhea and the following variables: age, body mass index (BMI), weekly studying hours and age of menarche. Conclusion: Primary dysmenorrhea is prevalent in the Jordanian population. To overcome severe dysmenorrhea, women should increase their intake of fish and fresh fruits, drinking water and use of oral contraceptive pills. The study concluded that smoking, frequent sugar intake, fizzy drinks, coffee, tea and energy drinks were associated with severe dysmenorrhea. It is also worth mentioning that alcohol consumption had a positive impact on dysmenorrhea. Trial Registration: Registered in Clinicaltrial.gov (ID: NCT04583943). [ABSTRACT FROM AUTHOR]

The purpose of the study was to know the level of time- organization skill by the students of institute science and technical physical and sports activities, as the differences between them according to the variables of the sex, the level of study and the specialty. For that, the researcher has distributed a questionnaire to a simple of 72 students, then he statistically treated the results using the software spss. We found that students have a medium level of Time- organization skill and that there are no differences statistically significant at the same skill between students a cording to the sex, the level of study or the specialty. [ABSTRACT FROM AUTHOR]

Objectives: The main aim of the present work is to screen the effect of temperature and exposure time (ET) on the extraction of Opuntia ficus-indica and Opuntia dillenii cladodes. Material and Methods: The literature revealed that few attempts were made on the cladodes and other parts of the plants for extracting constituents from them. However, no attempts were made on screening to find out the impact of dependent variables on the independent response. Design of the experiment using quality by design software, namely, Design Expert was used to reveal the impact of the dependent variable on the response. Results: O. ficus-indica and O. dillenii were poised, authenticated, and were hauled out with water and the effect of dependent variables (temperature and ET) on the response (% yield) was assessed. The equation coded from this study for the % yield was generated as +54.30+0.4061A-0.6432B+0.1500AB+0.8375A2+0.3875B2. Conclusion: The study revealed that 65°C is the optimum temperature and the extraction and ET are directly proportional to extracting the contents from the cladodes. [ABSTRACT FROM AUTHOR]

Local development, at a global level, is of great importance. For this reason, the objective of this research is to identify those variables that influence its development and to show the causal relationships between them. In order to measure the level of influence between the different variables, a structural analysis matrix is created, based on the criteria of experts. This is processed with MIC-MAC software and then the theories of forgotten effects are used to study the direct and indirect causal relationships. Among the main results obtained, it can be highlighted that local development is an integral development process, which combines different dimensions. It is very important to bear in mind that when indirect relationships are analyzed, forgotten effects are obtained, which should be paid attention to when working in terms of local development. [ABSTRACT FROM AUTHOR]

Given the importance of the ability to use variables flexibly in Calculus and students' difficulties related to various uses of variables, this study examined how variables are treated in calculus class. Data for this study came from graduate teaching assistants' (TAs') classroom teaching, which plays a crucial role in undergraduate students' learning of entry-level mathematics, but of which we still have a limited understanding. We analyzed TAs' uses of variables in terms of prior literature examining how students use variables and what uses of variables cause difficulties for students. Our results show that the uses of variables by the TAs in this study typically aligned with students' dominant conception of variables as symbols to be manipulated and did not give students many opportunities to consider the uses of variables that commonly cause difficulties for students. [ABSTRACT FROM AUTHOR]

It is of great interest for establishments that offer a product or service, for example museums, to know the number of possible visits as a function of other variables that customers will make in a specific period. This to evaluate the degree of demand that exists and at the same time, evaluate if the dissemination strategies are working or otherwise, make more appropriate decisions to improve the quality of attention and satisfaction with visitors. To implement the generalized linear model to estimate the number of annual visits to museums in Mexican territory as a function of predictive variables, a database of 110 museums taken from the Instituto Nacional de Estadística y Geografía (INEGI) for the years 2017 and 2018 was used. The models used were regression ordinary linear (RLO) and Poisson regression (RP) and these were applied to all the principal components of eleven predictor variables (web page, reception and service capacity, main theme, permanent collection, ownership, entry, adult fee, discounts, type of visits, open days of the year and temporary exhibitions) to counteract multicollinearity. Besides, the coefficient of determination (R²) was measured between the observed and estimated data to determine the method with the best fit. The functions were used to estimate the number of visits for the years 2019 and 2020. With the model that best fit, an analysis of estimation errors was performed. Comparing the observed data for the years 2017 and 2018 with the results estimated with the characteristic functions of each model, the determination coefficients were R² = 0.61 for the RLO and R² = 0.86 for the PR, respectively. For the years 2019 and 2020, the coefficients of determination obtained were R² = 0.68 and R² = 0.31 for the RLO, and R² = 0.87 and R² = 0.84 for the RP, respectively. The maximum error of estimation registered was between 10 001 and 20 000 annual visits. It is shown that the most suitable model to forecast future annual visits to any museum in Mexico is the Poisson regression. It is believed that the high adjustment to the data observed with the PR method is because these did not have an excess of zeros and fulfilled the assumption of equidispersion. Finally, with the proposed characteristic function, the number of annual visits can be estimated with a maximum error of around 10 %, which is low compared to the maximum number of annual visits that a museum receives. [ABSTRACT FROM AUTHOR]

Antecedentes: en los últimos años el auge de la 4ta revolución industrial ha hecho que las personas y empresas en general comiencen a tomar decisiones basadas en la información que recolectan de sus procesos. Las granjas porcícolas‚ aunque bien capturan información de los animales‚ sigue siendo muy básicas y pobres de estructura‚ impidiendo así la explotación del 100 % de la información y que las decisiones tomadas carezcan de los aprendizajes que nos dejan los datos históricos. Objetivo: diseñar una tecnología de fácil implementación en la captura de información zootécnica en campo que almacene la información en bases de datos estructuradas para su posterior modelado y relacionamiento con otros conjuntos de información. Metodología: se diseñó un formulario automatizado en la aplicación Microsoft Excel para la captura de la información en bases de datos estructurada que luego se extrae‚ transforma y carga (ETL) en el aplicativo Microsoft power BI a través de la herramienta integrada power query para la limpieza de la información. Luego‚ se diseñan modelos relacionales que permiten el análisis de información conjunta a través de visualizaciones interactivas y amigables con el usuario final. Resultados: hemos registrado 630 animales experimentales equivalente a una base de datos de 5500 filas x 84 columnas. La información incluye datos de metagenómica‚ hematológicos y química sérica e información zootécnica. Se construyeron cuadros de mando integral dónde se pueda revisar a través de filtros dinámicos la interacción de todas las variables por cerdo evaluado y facilitar así la toma de decisiones. Conclusión: el desarrollo de la herramienta para la captura de la información estructurada para su posterior modelado y análisis ha generado eficiencias en tiempo al momento de analizar la información‚ permitiendo tomar decisiones de una forma más sencilla y con bases más sólidas. Actualmente la herramienta se encuentra en el desarrollo de una opción para la captura de información desde la web‚ permitiendo llegar la tecnología a cualquier campo donde se requiera y desee mejorar la eficiencia y eficacia de sus granjas a través de la toma de decisiones basadas en datos. [ABSTRACT FROM AUTHOR]

Summary: Series‐connected lithium battery packs are widely adopted in industries such as electrical vehicles and large‐scale energy storage systems. It is necessary to configure an equalization system for them to reduce the inconsistency of single cells, to ensure the battery pack cycle capacity. Although many novel active converters have been proposed for equalization, there still lacks systematic analyses on variables, topologies, and modular methods. Therefore, this paper provides a systematic review on the above aspects. Initially, an overall summary is present on current variables for equalization control. Second, the dominant structures are divided into cell‐to‐cell, cell‐to‐pack, and pack‐to‐pack topologies, and their characteristics are pointed out for comparison. And then, the modular methods, including single‐layer‐based, multi‐layer‐based, and hybrid integrations are evaluated via graph theory. Some key issues and potential research directions are given, which are expected to offer assistance on the selection of appropriate variables and topologies for equalization systems in the future. [ABSTRACT FROM AUTHOR]

Con el objetivo de evaluar las fases fenológicas y componentes del rendimiento en nueve cultivares de soya, en la época poco lluviosa, sobre un suelo fluvisol mullido, se desarrolló una investigación en áreas de la Estación Experimental Agrícola de "Jucaibama", perteneciente al Instituto de Investigaciones Agropecuarias "Jorge Dimitrov", ubicada en la carretera Bayamo-Mabay km 13½, municipio Bayamo, provincia Granma. La siembra se realizó en el mes de diciembre del año 2016, con un marco de siembra de 0,70 m entre surcos y 0,05 m entre plantas, en parcelas de cuatro surcos de cinco metros de largo, para un área total de 14 m², en un diseño en bloques al azar con cuatro réplicas. Se realizó un análisis de varianza de clasificación doble y la comparación múltiple de medias se ejecutó mediante la prueba de Tukey para p≤0,05. Se observaron diferentes respuestas entre variedades en todas las variables evaluadas, excepto en la plena madurez fisiológica. Las variedades Vencedor y Brillante expresaron rendimientos de 1,86 y 1,85 t ha-1, respectivamente, sin diferencias significativas con las variedades IS-24, IS-1, IS-36, William-82 e IS-27, que mostraron rendimientos entre 1,46 y 1,67 t ha-1. [ABSTRACT FROM AUTHOR]

In order to improve the quality of corn sowing and fertilizer utilization, reduce labor costs, this paper aimed at the traditional tillage fertilizer machine to improve. The seeding and fertilizing machine with adjustable flow is designed by integrating particle fertilizer sensor and CAN bus transmission technology. It is mainly composed of seed and fertilizer discharging mechanism, ditch and soil covering mechanism, and leakage seeding and blockage monitoring system. Fertilizer drop signal can be obtained in real time by detecting the flow sensor outside the fertilizer discharge pipe. The speed of the stepper motor can be adjusted after signal processing, which can also realize the alarm of missing sowing and blocking light, and realize the precise variable sowing. The field experiment results show that the maximum relative error of seed leakage rate monitoring is 3.75%, and the alarm accuracy of fertilizer clogging is high. This machine can reduce the intensity of manual operation, and the quality of operation can be effectively monitored and controlled, can effectively reduce the production cost, has better practicability and economy. [ABSTRACT FROM AUTHOR]

For the public health system in Romania, the opinion of patients and one of the doctors has become an important source of information in detecting problems and developing effective action plans to improve the quality of medical services. Subjects were included in the cross-sectional study conducted through qualitative and quantitative methods. From a total of 592 hospitalized patients between October 2021 and March 2022, 41% completed the satisfaction evaluation questionnaires. According to the obtained results, it is found that socio-demographic variables influence the level of satisfaction of hospitalized patients. Thus, women tend to have a lower level of satisfaction than men, in terms of the quality of accommodation and food and pay more attention to communication with the attending physician. Both men and women had a satisfactory overall impression of the quality of care received at discharge. There was also an increased level of satisfaction for rural patients in all areas, but lower scores for patients with higher education, who were less satisfied with the quality of accommodation, food and cleanliness. In conclusion, when conducting a patient satisfaction survey, one must be aware of the effect of many variables on patient responses. [ABSTRACT FROM AUTHOR]

Introducción. El perifiton se entiende como una comunidad compleja de microorganismos entre los cuales se encuentran principalmente organismos fotosintéticos y zooplancton adheridos a sustratos, su estudio permite conocer el funcionamiento de los ecosistemas acuáticos, así como el estado y ecología de las comunidades presentes. Objetivo. Evaluar la calidad de agua a partir de la diversidad de perifiton del caño Barandas en la Reserva Natural El Diamante de Las Aguas, en el departamento de Guaviare. Metodología. se midieron las variables fisicoquímicas pH, oxígeno disuelto y temperatura en 5 estaciones a lo largo de 200 metros del cuerpo de agua, se tomaron muestras de perifiton sobrepuesto en superficies de roca, tronco y hojarasca, por medio de un raspado en el interior de un marco de 2x2 cm con 3 repeticiones; para la identificación de los organismos se observaron 25 alícuotas durante 5 minutos por alicuota; para evaluar la calidad de agua, se realizaron índices de diversidad de Shannon-Wiener, Simpson, Menhinick, análisis de correspondencia canónica y el índice biológico de contaminación (IBC). Resultados. Se obtuvieron 465 registros, distribuidos en 82 géneros, los más representativos fueron Campylodiscus (5.81%), Tribonema (8.60%), Ophyoctium (10.75%) y Microspora (11.40%). El BCI arrojó como resultado 11,7 lo cual indica que es una zona de agua limpia. Conclusión. Las variables evaluadas presentaron una relación directa con las comunidades de perifiton encontradas en las estaciones. Los índices de diversidad mostraron que en este caño hay una alta diversidad en las comunidades de perifiton, lo cual indica una buena calidad de agua. [ABSTRACT FROM AUTHOR]

Objectives: To determine sex through the mastoid process through a descriptive study, in order to establish the main anatomical differences of the mastoid in men and women. Materials and methods: A review of the literature found in the different medical databases at national and international level was carried out and then 19 human skulls worked under the quality standard of bone pieces of the anatomical amphitheater of the University of Applied and Environmental Sciences (U.D.C.A) previously dissected and with ignorance of the sex and age of origin of the sample indicated were evaluated. Measurements were taken in millimeters by a digital calibrator and photographic record of the selected sample was taken. Results: Six (6) of the parameters established by Mazza 27 were evaluated in seventeen (17) human skulls, of which 5 were men and 12 women. Discussion: The results obtained in the present study with that of Mazza et. al, they have a high agreement, because with a confidence interval of 95% it was established that the intervals of the means are significant and applicable in the two populations. It can be categorically stated that it is possible to determine by means of relationships between different parameters of the mastoid process the sex of a bone corpse. [ABSTRACT FROM AUTHOR]