Arithmetic Framework to Optimize Packet Forwarding among End Devices in Generic Edge Computing Environments

Multi-access edge computing implementations are ever increasing in both the number of deployments and the areas of application. In this context, the easiness in the operations of packet forwarding between two end devices being part of a particular edge computing infrastructure may allow for a more efficient performance. In this paper, an arithmetic framework based in a layered approach has been proposed in order to optimize the packet forwarding actions, such as routing and switching, in generic edge computing environments by taking advantage of the properties of integer division and modular arithmetic, thus simplifying the search of the proper next hop to reach the desired destination into simple arithmetic operations, as opposed to having to look into the routing or switching tables. In this sense, the different type of communications within a generic edge computing environment are first studied, and afterwards, three diverse case scenarios have been described according to the arithmetic framework proposed, where all of them have been further verified by using arithmetic means with the help of applying theorems, as well as algebraic means, with the help of searching for behavioral equivalences.

Evaluating Organizational Performance of Public Hospitals using the McKinsey 7-S Framework

Background This study examined non-financial aspects of the organizational performance of public hospitals from the perspective of hospital physicians; the obtained results were analyzed to identify the necessary improvements in organizational performance. Methods This was a cross-sectional study of multidisciplinary public hospitals on a group of 249 randomly selected physicians from 22 in-patient departments or clinics operating in the Warsaw region. The study data was collected using the structured World Health Organization questionnaires (to be filled out by respondents) assessing the hospital’s organizational performance variables qualified according to the McKinsey 7-S Framework. Epidata software version 3.1 was used for data entry, and the analysis was carried out in the SPSS software, version 19. The results of the organization evaluation are presented in the McKinsey 7-S Framework diagram. Key elements of the performance factors were grouped into ‘stens’, and the sten values were expressed as arithmetic means. Normal distribution of the stens was validated with the Kolmogorov–Smirnov test. 95% confidence intervals were calculated. The significance of differences between the analyzed stens was compared with the paired Student t-test. The interdependence of the variables was determined using the Pearson’s correlation coefficient. Results The results revealed a significant difference (p <0.05) in the respondents’ assessment of social (a mean score of 2.58) and technical (a mean score of 2.80) organizational aspects of the hospital operation. Scores for all variables were low. The social elements of an organization with the lowest score included ‘staff’, and in it the aspect – ‘efforts are made to inspire employees at the lowest levels of the organization’, ‘skills’ involving the learning style followed by the management/managerial staff, and ‘management style’ (average scores of 2.38, 2.56, 2.61, respectively). Conclusion Consistently with the existing literature, social factors were shown to play a more significant role in the management and they therefore deserve careful attention and more recognition when identifying and improving the key aspects affecting the organizational performance of public hospitals. Technical elements (strategy, structure, system) are important, but were demonstrated to have limited effect on the organizational operations geared towards ensuring effective functioning of a public hospital.

Immunization Trials with Recombinant Major Sperm Protein of the Bovine Lungworm Dictyocaulus viviparus

The lungworm Dictyocaulus viviparus is one of the most economically important bovine parasites in temperate climate regions. Following infection, D. viviparus induces a temporary protective immunity, and a vaccine based on attenuated, infective larvae is commercially available. However, due to several disadvantages of the live vaccine, the development of a recombinant subunit vaccine is highly desirable. Therefore, the major sperm protein (MSP), which is essential for the parasite’s reproduction, was tested as a recombinantly Escherichia coli-expressed glutathione-S-transferase (GST)-fused vaccine antigen in immunization trials with two different adjuvants, Quil A and Al(OH)3. Calves (N = 4 per group) were immunized on study day (SD) 0, 21 and 42 and given a challenge infection on SD 63–65. The two control groups received only the respective adjuvant. Based on geometric means (GM), a 53.64% reduction in larvae per female worm was observed in the rMSP Quil A group vs. its control group (arithmetic means (AM): 54.43%), but this difference was not statistically significant. In the rMSP Al(OH)3 group, the mean number of larvae per female worm was even higher than in the respective control group (GM: 9.24%, AM: 14.14%). Furthermore, male and female worm burdens and the absolute number of larvae did not differ significantly, while the Al(OH)3 control group harbored significantly longer worms than the vaccinated group. Vaccinated animals showed a rise in rMSP-specific antibodies, particularly IgG and its subclass IgG1, and the native protein was detected by immunoblots. Although rMSP alone did not lead to significantly reduced worm fecundity, it might still prove useful as part of a multi-component vaccine.

Refinements of Jensen's inequality and applications

<abstract><p>The principal aim of this research work is to establish refinements of the integral Jensen's inequality. For the intended refinements, we mainly use the notion of convexity and the concept of majorization. We derive some inequalities for power and quasi–arithmetic means while utilizing the main results. Moreover, we acquire several refinements of Hölder inequality and also an improvement of Hermite–Hadamard inequality as consequences of obtained results. Furthermore, we secure several applications of the acquired results in information theory, which consist bounds for Shannon entropy, different divergences, Bhattacharyya coefficient, triangular discrimination and various distances.</p></abstract>

Reasons for low academic achievement among public school students from the point of view of mathematics teachers in the city of Aqaba: أسباب تدني التحصيل الدراسي لدى طلبة المدارس الحكوميّة من وجهة نظر معلمي الرياضيات في مدينة العقبة

The study aimed to identify the reasons for the low academic achievement of public school students from the point of view of mathematics teachers in the city of Aqaba. For data analysis, arithmetic means, standard deviations, t-test for independent samples, one-way analysis of variance, and (LSD) test were used. This is significant in terms of the arithmetic average, which amounted to (3.66), as it was found that the most important reasons for low achievement are the lack of incentives for the creative student, in addition to the fact that parents’ preoccupation with their children does not encourage education, and the weak financial return for the teacher, as well as the lack of incentives for the creative teacher, and based on the The results of the study The researcher made several recommendations, the most important of which were: the necessity for mathematics teachers to use incentives for students in basic schools in order to increase their academic achievement, and the need for mathematics teachers to follow appropriate methods in the education process in order to increase their academic achievement. The level of academic achievement.‏

The level of empathy among students of the first three grades in the point of view of their teachers in schools in the schools affiliated to the Marka Brigade in Jordan in the light of some variables: مستوى التعاطف لدى طلبة الصفوف الثلاث الأولى من وجهة نظر معلميهم في المدارس التابعة لمديرية لواء ماركا في الأردن في ضوء بعض المتغيرات

This study aimed at investigating the level of empathy among students of the first three grades in the teacher’s point of view in the schools affiliated to the Marka Brigade in Jordan in the light of these variables: Gender, Qualifications and the teacher’s years of experience. And the sample was formed which was selected randomly between (293) teachers during the second semester of the year (2020/2021), and to achieve the goals of the study a scale was developed to measure the level of empathy, and after verifying the validity and reliability of the scale it was applied to the study sample members, and to find out the level of empathy among students in the first three grades the arithmetic means and standard deviations of the scores of the study sample members were calculated on the study tool, and to examine the differences attributed to the teacher’s qualification and experience, the one- way analysis was used. and the study results indicated that the average response of the members of the sample was high, and the study results also indicated that there are no statistically significant differences in the empathy level among the students of the first three grades according to the gender variable of the teacher, and that there are no statistically significant differences at the level of significance (α≤0.05) at the total level of empathy among students according to the qualification variable of the teacher, and that there are no statistically significant differences at the level of significance (α≤0.05) at the total level of empathy among students of the first three grades according to the experience variable of the teacher. and the researcher concluded a set of recommendations, most notably designing training programs for teachers responsible for the first three grades and activating their role in developing the emotional and social skills of their students, and studying empathy among students at other age stages and from their point of view.

Analysis of the Mixing of Filler and Base Materials in Arc-Welded Single-Bead Surface Welds Using an EDXS Method

This article deals with an analysis of mixing and determines the admixing rate of a base S355 steel plate in single-bead surface welds by measuring the chemical composition using a plane-scan energy dispersive X-ray spectroscopy (EDXS) on metallographic cross-sections. The results show that obtaining a larger number of EDXS measurements does not necessarily lead to obtaining a more accurate admixing rate. Due to the ever-present segregations that are generally near the base material, the disadvantage of this method is the subjective influence of the SEM operator on the estimated admixing rate. To obtain relevant results, a sufficiently wide area of well-mixed melt, including segregations, must be analyzed. This study showed that by using a sufficiently large number of appropriately selected sites with a sufficiently large surface area, it is possible to estimate the admixing rate from the chemical composition with an accuracy of ≥96% for the geometrically determined admixing rate D = 30%. From several equations, the best result showed an equation which is the arithmetic mean of the two different arithmetic means and in which the artificial influencing factor of the segregations of the base material is taken into account. With this equation, the same value of admixing rate, D = 30%, was obtained using the comparative geometric method.

The proficiency Level of Female Primary School Pupils in Reading Comprehension Skills from the Viewpoint of their Teachers: مستوى تمكن تلميذات المرحلة الابتدائية من مهارات فهم المقروء من وجهة نظر معلماتهن

The current research aims to identify the level of proficiency of upper-grade female primary school pupils in the elementary stage in reading comprehension skills from the viewpoint of their teachers, to detect the teachers, viewpoints about their pupils, level of proficiency in reading comprehension skills that are due to the difference in the grade, and to identify a list of reading comprehension skills that are necessary for upper grade’s students. The author used the descriptive survey method and applied the research tool (questionnaire) on a sample of (261) teachers out of (815) at a percentage of (32%), having verified their validity and reliability. She also used a set of statistical methods including: Alpha Cronbach, Pearson Correlation Coefficient, repetitions, percentages, arithmetic means, standard deviations, single analysis of variance (ANOVA) test, and Scheffe post hoc difference test. The author found that that the proficiency level of female primary school pupils in those skills is great in general as well as in the skills of direct, deductive, and creative comprehension, while it was moderate in the skills of appreciation and critical understanding. There are statistically significant differences at the level of (0.05) in direct comprehension skills due to the teaching grade variable, as it came in favor of the fourth and fifth grades. There are no statistically significant differences in the rest of the skills. Finally, in light of the research findings, a set of recommendations were made.

The Effects Induced by a Specific Program on the Development of Segmental Flexibility in Athletes Aged 7–14 in Synchronized Swimming

This research aims to expand the knowledge on the level of development of segmental flexibility, to girls aged 7–14 years, who practice synchronized swimming. The study includes 112 girls aged between 7 and 14 years, divided into groups on age, every two years, and on the period of synchronized swimming between 6 months and 42 months. The study focused on three body segments, namely: torso, hip, and shoulder. Segmental flexibility was assessed using 5 tests: standing trunk flexion, shoulder flexibility, Hip-split legs sideways, Hip-split antero-posterior with the right foot forward, and Hip-split antero-posterior with the left foot forward, performed in the gym. The statistical analysis was performed using the SPSS-24 software aiming at the following parameters: arithmetic means (X), standard deviation (SD), minimum (Min), maximum (Max), CI–95% Confidence Interval for Mean with the two lower and upper marks, Kolmogorov-Smirnov test for testing the normality of data distribution and a multifactor ANOVA analysis, using the F test. The most significant improvements highlighted by the differences between initial and final were for: the shoulder flexibility test in the 13–14 years’ groups; flexibility of the spine registered the biggest difference between the 9–10 years’ group; for hip-split legs sideways the biggest difference was between 9–10 years’ group and 13–14 years and 9–10 years, too. The hip-split antero-posterior tests with the left and also, for right foot forward, showed the biggest differences between tests for 13–14 age groups. The development of joint flexibility has an upward evolution, being conditioned by the age of the practitioners and by the operating methodology specific to synchronized swimming. The longer the training period, the greater the premises for the development of segmental flexibility.