Influence of different factors on the RAID 0 paired magnetic disk arrays

The rapid technological progress has led to a growing need for more data storage space. The appearance of big data requires larger storage space, faster access and exchange of data as well as data security. RAID (Redundant Array of Independent Disks) technology is one of the most cost-effective ways to satisfy needs for larger storage space, data access and protection. However, the connection of multiple secondary memory devices in RAID 0 aims to improve the secondary memory system in a way to provide greater storage capacity, increase both read data speed and write data speed but it is not fault-tolerant or error-free. This paper provides an analysis of the system for storing the data on the paired arrays of magnetic disks in a RAID 0 formation, with different number of queue entries for overlapped I/O, where queue depth parameter has the value of 1 and 4. The paper presents a range of test results and analysis for RAID 0 series for defined workload characteristics. The tests were carried on in Microsoft Windows Server 2008 R2 Standard operating system, using 2, 3, 4 and 6 paired magnetic disks and controlled by Dell PERC 6/i hardware RAID controller. For the needs of obtaining the measurement results, ATTO Disk Benchmark has been used. The obtained results have been analyzed and compared to the expected behavior

MONITORING OF HONEY CONSUMPTION IN THE AREA OF THE CITY NAŠICE WITH REFERENCE TO THE HEALTH EFFECTS OF HONEY CONSUMPTION

There is a wide range of bee products on the market. The most famous and most accepted by consumers is honey. In Western European countries, the average consumption of honey per capita ranges from three to eight kilograms, while the average consumption of honey in Croatia is very low, 400 grams per capita. The European Union produces only 52% of honey for its own needs. The aim of the research was to study the availability of honey to potential consumers, honey consumption habits, ways of consuming honey, and knowledge of the properties of honey. A survey was conducted online. Respondents were of different genders and different age groups. The survey consisted of 20 questions, and 130 individuals (46% mean and 54% women) from the city of Našice were interviewed. The obtained data were analysed. After conducting research and processing the results, it can be concluded that honey is a product that is accepted by consumers of different age groups. Respondents believe that propolis has better healing properties than honey, but they rarely consume it. Honey is available and affordable to consumers

RISK FACTORS AND BONE MINERAL DENSITY IN ATHLETES AND NON-ATHLETES

Risk factors are important aspects in the treatment of patients with lower bone mineral density (BMD).The objective of this study was to estimate the association between risk factors and BMD status of subjects.Forty subjects - athletes of first sub-sample, were recruited from a football club “Železničar” in Niš, while forty subjects - non-athletes of the second sub-sample, were recruited from the Faculty of Occupational Safety in Niš, totally 80 subjects of masculine sex. BMD was diagnosed by using Dual X-Ray Energy Absorptiometry (DEXA densitometer), in the lumbar region of the spinal column and region of the hip articulation, while the presence of risk factors was evaluated by the One-Minute Osteoporosis Risk Test, ie. questionnaire of the International Osteoporosis Foundation, just before the diagnostics of BMD. All subjects agreed with the terms of research, conducted in accordance with the Declaration of Helsinki.Among 80 subjects, in six (1 athlete and 5 non-athletes) athletes osteopenia was found in the lumbar region of the spinal column, and in three (non-athletes) osteopenia was found in the region of hip articulation. Based on the results of χ2 test, there was the association between the lack of physical activity as a risk factor and osteopenia in the lumbar region of the spinal column (BMDSPINE osteopenia), and between the lack of physical activity as a risk factor and osteopenia in the region of hip articulation (BMDHIP osteopenia), while the association significance between smoking as a risk factor and BMDSPINE osteopenia should be taken with caution, because it is approaching the critical value (p=0.056).Concerning this research, the risk factors had a considerably greater impact on low BMD in non-athletes, compared to athletes, ie., in patients who are smokers and lack physical activity

Morphological characteristics and motor abilities of boys aged 15 and 17

Measuring of morphological characteristics and motor abilities was performed on the sample of 51 male students of the secondary traffic school “Pinki” from Novi Sad. Body height and body mass were used for measuring of morphological characteristics, and results of standing long jump and running at 30 meters with standing start were used for measuring of motor abilities. The body mass index was calculated after the results were obtained. The aims of the study were to establish and analyze differences in the results of morphological status and explosive strength of students measured in different periods, in the first measurement when the subjects were 15 years old and in the second measurement when the subjects were 17 years old. The data obtained in the study were analyzed using repeated measures ANOVA. The obtained results indicate the existence of statistically significant differences between first and second measurement in all morphological characteristics and motor abilities, at the level of significance of p<0.05.A significant increase in morphological characteristics and motor abilities with age, indicating that boys have adequate growth and development for their age.The age factor has a significantly stronger influence than the factor of the curriculum for the physical education in this high school

Improving motor fitness in primary school children through a school based intervention

The aim of this study is to establish the effects of specially programmed circuit training on physical fitness in primary school children. A total of 58 (28 girls) primary school children aged 11-13 (experimental group 12.2±1.2, control group 12.4±1.1) years voluntarily participated in this study. Physical fitness of children is assessed based on motor skills, through the following tests: abdominal muscle endurance – Sit-ups test, upper body strength and muscular endurance – Bent-arm hang test, upper-body muscular endurance – Push-ups test, muscular strength and power of the lower limbs – Standing broad jump test, agility and speed – 4x10m test and flexibility – Sit and reach test. During the regular classes of physical education, the experimental group conducted a circular training lasting 15-20 minutes, at the same time control group practiced exercises that were in accordance with the plan and program of teaching physical education for a particular teaching unit. The treatment lasted for 15 weeks, with two classes of physical education per week. The results for the standing broad jump indicated significant differences between groups following 15 weeks. Furthermore, the group that participated in the circuit training program made significantly greater gains compared to the control group (p<0.05) in bent-arm hang, sit-ups and sit and reach. The results for the 4x10m test indicated no significant differences in time, group and their interaction (p≥0.05). To conclude, circuit training appears to be an effective way of improving physical fitness in primary school children. The results of this study indicate that this method was more effective for performance than traditional school program

CORRELATIONS OF THE MUSCLE STRENGTH AND THE BONE DENSITY IN YOUNG ATHLETES AND NON-ATHLETES

The aim of this study was to explore the nature of relationships between lower limb muscle strength and bone density parameters in a group of young athletes and non-athletes, aged 17-18. Athletes that were divided into three experimental groups (EG1, EG2, and EG3) underwent a nine-month long resistance training program of low, medium and high level of external loads, respectively. Non-athletes made up the control group (CS). We hypothesized that muscle strength would significantly correlate to bone mineral density (BMD), in a positive and an increasing way in EG1, EG2, and EG3 participants, respectively, and that these correlations will be greater in relation to correlations determined within the control group of non-athletes. Mean jump HEIGHT values, as one of the most significant indicators of explosive strength, as well as mean POWER, FORCE and VELOCITY values, decreased at the end of resistance program in EG1, EG2, and EG3 participants. On the other hand, mean HS1RM values increased at the end of resistance program in ES participants, as well as bone density parameters in all the participants. At the same time, mean POWER, FORCE and VELOCITY values, increased at the final assessment, while mean HS1RM value decreased in CS participants. No correlation between HEIGHT and HS1RM on the one hand, and bone density at the other was determined in the entire sample. Correlations occurred only in EG1 (60%1RM) and EG3 (85%1RM) participants, as positive and negative correlations, respectively, and they were more frequent at the initial assessment, i.e. most of them disappeared at the final assessment

Application of the Schroth Method in the Treatment of Idiopathic Scoliosis: A Systematic Review and Meta-Analysis

Background: Idiopathic scoliosis can be defined as a complex three-dimensional deformity of the spine and trunk, which occurs in basically healthy children. Schroth scoliosis-specific exercises have shown good results in reducing idiopathic scoliosis progression. This study aimed to critically evaluate the effect size of Schroth’s method through a systematic review and meta-analysis. Methods: Four databases were included in the search: PubMed, Cochrane Library, Web of Science, and Google Scholar. The following keywords were used: “Schroth exercise”, “idiopathic scoliosis”, “Cobb angle”, “angle of trunk rotation”, and “quality of life”. Only articles written in English that met the following criteria were included in our study: subjects who had idiopathic scoliosis, the Schroth method was applied, and Cobb angle or angle of trunk rotation or quality of life as outcomes. Results: Ten randomized controlled trials were included in this study. The effect size of the Schroth exercise ranged from almost moderate to large, for the outcomes used: Cobb angle (ES = −0.492, p ˂ 0.005); ATR (ES = −0.471, p = 0.013); QoL (ES = 1.087, p ˂ 0.001). Conclusions: The current meta-analysis indicates that the Schroth method has a positive effect on subjects with idiopathic scoliosis

HYDRODINAMICS AND SWIMMING TEHNIQUE AS PARAMETERS FOR SUCCESSFULL SWIMMING AT THE AGE 10–12

The aim of this study was to confirm that swimming technique and hydrodynamic parameters of a swimmer are relevant for successful swimming. Total of 63 boys, at the age of 10-12, participated in this research. There were 15 criterion morphology and specific motoric skills variables as well as one predictive variable derived from FINA points. We have concluded that hydrodynamic and swimming technique significantly contributes for successful swimming. These facts should use trainers as guidance for workout plan

TELESNA KOMPOZICIJA DECE SPORTISTA I NESPORTISTA

Many children have inaccurate perception of their body weight and distort image of their body. This study has examined 30 girls as well as 60 boys at the age of 10-12. Body composition was assessed by Body Fat Analyzer “BES 200 Z” (Bioelectrical Sciences, Inc., CA, USA). According to he results, there are differences in morphological characteristics between non-athlete and athlete groups, while athlete groups of children are more likely similar