scholarly journals Comparative Analysis of Manual and Mechanised Yam Minisett Planting

2021 ◽  
Vol 11 (1) ◽  
pp. 114-119
Author(s):  
A. K. Arkoh ◽  
◽  
S. K. Amponsah ◽  
J. Opoku- Asante ◽  
◽  
...  
Keyword(s):  
Heart Rate ◽  
Comparative Analysis ◽  
Analysis Of Variance ◽  
Statistical Significance ◽  
Field Capacity ◽  
Labour Cost ◽  
Economic Feasibility ◽  
Descriptive Statistics ◽  
Critical Areas ◽  
The Mean

Pain in yam cultivation has been identified as critical areas in yam cultivation. The aim of the study was to compare the manual and mechanised yam minisett planting. To address this problem, heart rate (HR) of workers during mounding and ridging, and planting were measured as well as assessing economic feasibility in mechanising yam planting. Polar watch (RS 800 CX) was used to measure HR of the operations. Hoe and cutlasses were used for mounding and ridging. The HR of tractor operator during planting was determined. Descriptive statistics and analysis of variance (ANOVA) were done using GenStat software (VSN International, 2011). Statistical significance was carried out at p<0.05. The field capacity was 3.84 and 1.45 h/ha for mechanised and manual, respectively. The mean HR was 112.80 and 112.7 bpm for mounding and ridging respectively while 112.00, 132.00 bpm for mechanised and manual, respectively. Mechanised yam minisett planting reduces labour cost by 50%.

scholarly journals Bereitschaftspotential preceding eyelid blinks in Parkinson’s disease

2017 ◽  
Vol 75 (8) ◽  
pp. 539-545
Author(s):  
Isabella Araújo Mota ◽  
Maria das Graças Coriolano ◽  
Otávio Gomes Lins
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Analysis Of Variance ◽  
Statistical Significance ◽  
Healthy Controls ◽  
Negative Wave ◽  
The Mean ◽  
Normal Controls

ABSTRACT The Bereitschaftspotential (BP) is a negative wave observed in EEG retrograde averaging, preceding a motor act. The objective was to study the BP preceding voluntary eyelid blinks in Parkinson’s disease (PD) patients during off and on phases of levodopa. Methods Ten PD patients in stages 1 and 2 of the Hoehn & Yahr classification were compared to 18 healthy controls. Artifact-free EEG segments of two seconds preceding the onset of the blink potential were averaged and analyzed, and the statistical significance of the measured amplitudes were evaluated by analysis of variance models. Results The presence of a BP in the PD patients was demonstrated. The mean amplitudes at 0 ms were respectively 0.6 µV and 3.3 µV for the BP patients and the normal controls, respectively. Conclusions The BP amplitudes were significantly smaller in PD patients than normal participants. The amplitudes of the BP were not modified by levodopa.

scholarly journals Srdcová frekvencia v odozve na herné zaťaženie v basketbale žien

2014 ◽  
Vol 8 (2) ◽  
pp. 29-35
Author(s):  
Tomáš Vencúrik
Keyword(s):  
Heart Rate ◽  
Statistical Significance ◽  
Practical Significance ◽  
Future Research ◽  
Maximal Heart Rate ◽  
Training Process ◽  
Basketball Players ◽  
Time Motion ◽  
The Mean ◽  
Physiological Demands

The study compares intensity of game load among individual players’ positions and between first and second half. Ten female basketball players in senior category participated in this study. Four intensity zones were determined based on maximal heart rate (HRmax). Telemetric device Suunto Team Pack was used for monitoring the heart rate (HR) during the games. The mean HR during the games reached 88.1±3.9% of HRmax of total time. When we compared players’ positions in individual intensity zones we did not record statistical (p>0.05) nor practical significance and neither in % of HRmax (87.4±3.6 vs. 87.8±4.6 vs. 88.8±3.5; point guard vs. forward vs. center). Moreover, when we compared the 1st and the 2nd half in individual zones and in % of HRmax (87.7±4.1 vs. 88.5±3.7) we also did not record any statistical significance (p>0.05) and effect size coefficient shows small effect. Players spent 76.3% of total time with HR grater than 85% of HRmax. The results indicate high physiological demands on female basketball players during the games without taking into consideration the player’s position. This information can be useful for planning and managing training process as well as for comparison with training load. In similar future research we recommend to also evaluate the time-motion analysis besides the internal response and thus a more detailed look at the examined subject in question may be reached.

Unusually Small F-Statistic in Analysis of Variance and Regression Analysis

2016 ◽  
Vol 3 (3) ◽  
pp. 45-59
Author(s):  
Ceyhun Ozgur
Keyword(s):  
Regression Analysis ◽  
Lower Limit ◽  
Analysis Of Variance ◽  
Control Chart ◽  
Linear Models ◽  
Statistical Significance ◽  
P Value ◽  
Mean Square ◽  
Process Change ◽  
The Mean

All textbooks and articles dealing with classical tests in the context of linear models stress the implications of a significantly large F-ratio since it indicates that the mean square for whatever effect is being evaluated contains significantly more than just error variation. In general, though, with one minor exception, all texts and articles, to the authors' knowledge, ignore the implications of an F-ratio that is significantly smaller than one would expect due to chance alone. Why this is so difficult to explain since such an occurrence is similar to a range value falling below the lower limit on a control chart for variation or a p-value falling below the lower limit on a control chart for proportion defective. In both of those cases the small value represents an unusual and significant occurrence and, if valid, a process change that indicates an improvement. Therefore, it behooves the quality manager to determine what that change is in order to have it continue. In the case of a significantly small F-ratio some problem may be indicated that requires the designer of the experiment to identify it, and to take “corrective action.” While graphical procedures are available for helping to identify some of the possible problems that are discussed they are somewhat subjective when deciding if one is looking at an actual effect; e.g., interaction, or whether the result is merely due to random variation. A significantly small F-ratio can be used to support conclusions based on the graphical procedures by providing a level of statistical significance as well as serving as a warning flag or warning that problems may exist in the design and/or analysis.

scholarly journals Comparison of the hypotensive efficacy of propofol infusion versus nitroglycerin infusion in functional endoscopic sinus surgery

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Rasha Gamal Abu-sinna ◽  
Tamer Nabil Abdelrahman
Keyword(s):  
Heart Rate ◽  
Statistical Significance ◽  
Sinus Surgery ◽  
Hypotensive Anesthesia ◽  
Depressant Action ◽  
Duration Of Surgery ◽  
Close Range ◽  
Surgical Bleeding ◽  
The Mean ◽  
Mean Heart Rate

Abstract Background FESS is a common minimally invasive surgery that requires a clear field to be performed well. Hypotensive anesthesia is one of the most common maneuvers performed to help in keeping the field clear. An ideal drug for hypotensive anesthesia should be cheap and familiar to the anesthesiologist. So, being familiar with propofol and by using its cardio-depressant action, the idea of the research was developed. The idea of the study was to compare propofol infusion versus nitroglycerine infusion as a hypotensive agent. Results The mean duration of surgery was longer in the NTG to the propofol group. There was a high statistical significance in the average blood loss in the propofol group compared to the NTG group. The visibility of the operative field also was significant in the propofol group as compared with the NTG group. The mean heart rate in the NTG group was higher than the mean heart rate in the propofol group. The MAP in both groups was within a close range. Conclusion Propofol and NTG can produce a safe and effective controlled hypotension during FESS. Whereas, propofol has better surgical field visibility, less surgical bleeding, and less tachycardia during FESS.

scholarly journals Evaluating the pattern of residential quality in Nigeria: The case of Osogbo township

2010 ◽  
Vol 8 (3) ◽  
pp. 307-316 ◽  
Author(s):  
David Jiboye
Keyword(s):  
Analysis Of Variance ◽  
Urban Areas ◽  
Housing Quality ◽  
Descriptive Statistics ◽  
Residential Areas ◽  
Residential Quality ◽  
The Mean ◽  
Mean Differences ◽  
Housing Units

One of the major challenges of housing in Nigeria is how to address existing variations in the pattern of residential quality across different urban areas. Through a survey of 406 housing units selected from three residential areas in Osogbo Township in Nigeria, this study examines and compares the pattern of housing quality. Using descriptive statistics and Analysis of Variance (ANOVA), where; F =24.786 and P = 0.00 - significant at 0.05, the study shows that residential quality varies in pattern from one area to another. By comparing the mean differences among the zones, Zones C and A had 6.84, while C and B had 5.298. These values indicate that residential quality of "Zone C" is better relative to those of Zones "B' and "A" in Osogbo. The study concludes that appropriate policy and strategies should be put in place to improve housing quality within different residential areas in Nigeria.

scholarly journals Evaluation of Vegetative and Yield Performance of Tomato (Lycopersicon esculentum Mill.) Varieties at Abol District, Gambella Region

2020 ◽  
pp. 28-33
Author(s):  
Mihtretu Yonas ◽  
Nazif Abajabal
Keyword(s):  
Lycopersicon Esculentum ◽  
Analysis Of Variance ◽  
Block Design ◽  
Statistical Significance ◽  
Test Procedure ◽  
Growth And Yield ◽  
Hot Pepper ◽  
Mean Values ◽  
Lycopersicon Esculentum Mill ◽  
The Mean

Tomato (Lycopersicon esculentum Mill.) is major fruity vegetables grown in Ethiopia next to hot pepper. Although crops grown in the country its production and productivity is very low compared to the world average. Among the reasons for low its production and productivity, shortage of improved tomato varieties is the major one.  This experiment was done with the aim of evaluating tomato varieties and select high yielding cultivars. An experiment was conducted in bonga district Gambella region 2011/12 dry season under irrigated condition. Seven tomato varieties namely ARP Tomato D2, Fetan, Melkasalsa, Chali, Bishola, Gelila and  Roma-VF(as local check) and  were tested in randomized complete block design with 3 replications. The mean values of all parameters were subjected to two way analysis of variance using the Proc GLM procedure of  SAS 9.3. Then statistical significance of the mean of each parameter was determined using F-test and Duncan multiple range test procedure was used to compare differences between treatment means at 5% probability level. The analysis of variance showed statistically significant differences (p< 0.05) among varieties in all growth and yield parameters except days to 50% flowering. Among the tested tomato cultivars, Melkasalsa produced the largest fruit. The highest fruit yield was recorded by Melkasalsa followed by Bishola. we can conclude Melkasalsa and Bishola variety were the most productive and gave larger fruit compared to others. Hence, these varieties can be used by tomato growers under irrigated condition around Bonga area.

Psychophysiological Responses of Pilots in Hypoxia Training at 7000 and 7500 m

2020 ◽  
Vol 91 (10) ◽  
pp. 785-789
Author(s):  
Dongqing Wen ◽  
Lei Tu ◽  
Guiyou Wang ◽  
Zhao Gu ◽  
Weiru Shi ◽  
...  
Keyword(s):  
Heart Rate ◽  
Psychomotor Performance ◽  
Physiological Responses ◽  
Arterial Oxygen Saturation ◽  
Arterial Oxygen ◽  
Awareness Training ◽  
Similar Frequency ◽  
Psychophysiological Responses ◽  
The Mean ◽  
Training Protocol

INTRODUCTION: We compared the physiological responses, psychomotor performances, and hypoxia symptoms between 7000 m and 7500 m (23,000 and 24,600 ft) exposure to develop a safer hypoxia training protocol.METHODS: In altitude chamber, 66 male pilots were exposed to 7000 and 7500 m. Heart rate and arterial oxygen saturation were continuously monitored. Psychomotor performance was assessed using the computational task. The hypoxic symptoms were investigated by a questionnaire.RESULTS: The mean duration time of hypoxia was 323.0 56.5 s at 7000 m and 218.2 63.3 s at 7500 m. The 6-min hypoxia training was completed by 57.6% of the pilots and 6.1% of the pilots at 7000 m and at 7500 m, respectively. There were no significant differences in pilots heart rates and psychomotor performance between the two exposures. The Spo2 response at 7500 m was slightly severer than that at 7000 m. During the 7000 m exposure, pilots experienced almost the same symptoms and similar frequency order as those during the 7500 m exposure.CONCLUSIONS: There were concordant symptoms, psychomotor performance, and very similar physiological responses between 7000 m and 7500 m during hypoxia training. The results indicated that 7000-m hypoxia awareness training might be an alternative to 7500-m hypoxia training with lower DCS risk and longer experience time.Wen D, Tu L, Wang G, Gu Z, Shi W, Liu X. Psychophysiological responses of pilots in hypoxia training at 7000 and 7500 m. Aerosp Med Hum Perform. 2020; 91(10):785789.

Effect of human galanin on the response of circulating catecholamines to hypoglycemia in man

1995 ◽  
Vol 133 (6) ◽  
pp. 723-728 ◽  
Author(s):  
Ettore C degli Uberti ◽  
Maria R Ambrosio ◽  
Marta Bondanelli ◽  
Giorgio Transforini ◽  
Alberto Valentini ◽  
...  
Keyword(s):  
Heart Rate ◽  
Healthy Subjects ◽  
Sympathetic Nerve Activity ◽  
Heart Rate Response ◽  
Statistical Significance ◽  
Inhibitory Effect ◽  
Amino Acid Residues ◽  
Nerve Activity ◽  
Receptor Stimulation

degli Uberti EC, Ambrosio MR, Bondanelli M, Trasforini G, Valentini A, Rossi R, Margutti A, Campo M. Effect of human galanin on the response of circulating catecholamines to hypoglycemia in man. Eur J Endocrinol 1995;133:723–8. ISSN 0804–4643 Human galanin (hGAL) is a neuropeptide with 30 amino acid residues that has been found in the peripheral and central nervous system, where it often co-exists with catecholamines. In order to clarify the possible role of hGAL in the regulation of sympathoadrenomedullary function, the effect of a 60 min infusion of hGAL (80 pmol·kg−1 · min−1) on plasma epinephrine and norepinephrine responses to insulin-induced hypoglycemia in nine healthy subjects was investigated. Human GAL administration significantly reduced both the release of basal norepinephrine and the response to insulin-induced hypoglycemia, whereas it attenuated the epinephrine response by 26%, with the hGAL-induced decrease in epinephrine release failing to achieve statistical significance. Human GAL significantly increased the heart rate in resting conditions and clearly exaggerated the heart rate response to insulin-induced hypoglycemia, whereas it had no effect on the blood pressure. We conclude that GAL receptor stimulation exerts an inhibitory effect on basal and insulin-induced hypoglycemia-stimulated release of norepinephrine. These findings provide further evidence that GAL may modulate sympathetic nerve activity in man but that it does not play an important role in the regulation of adrenal medullary function. Ettore C degli Uberti, Chair of Endocrinology, University of Ferrara, Via Savonarola 9, I-44100 Ferrara, Italy

GAMBARAN BEBAN KERJA MENTAL PADA DOSEN FAKULTAS X UNIVERSITAS X

2019 ◽  
Vol 2 (3) ◽  
Author(s):  
Kartiani Dewi ◽  
Suryani S ◽  
Ahmad Yamin
Keyword(s):  
Community Service ◽  
Mental Workload ◽  
Sampling Technique ◽  
Mean Value ◽  
Descriptive Statistics ◽  
Large Contribution ◽  
Mean Dimension ◽  
The Mean ◽  
Quantitative Descriptive ◽  
University Lecturers

Lecturers are responsible for implementing the three main responsibilities in university (Tridharma Perguruan Tinggi) with 12 credits to 16 credits each semester. However, many lecturers feel that the workload is very excessive. The purpose of this study was to describe the mental workload of lecturers at the Faculty of X Padjadjaran University. The method of this research was quantitative descriptive by using a total sampling technique involving 43 lecturers. Data collection used NASA-TLX instruments. Data were analysed using descriptive statistics. The results of the study showed that overall the mental workload of the Faculty of X Padjadjaran University lecturers was included in the high category both in education and teaching assignments (74.4%), research assignments (76.7%), and community service assignments (74.4%). ) Effort dimensions have the highest mean value that is equal to 51.8, while the dimensions that have the lowest mean are Perfomance dimension, namely 9.4, where the greater the mean dimension shows the large contribution in the mental workload felt by the lecturer. The conclusions, this study show that most lecturers have a high mental workload. It is suggested that the lecturers need to have balance numbers of tasks according to their abilities, balance the time working with recreation, and meet the needs of rest. The results of this study need to be followed up by examining methods or efforts that can reduce the lecturers' mental workload.

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