Temperature Variation Analysis of a Coolant Level Using Multiple Comparisons for Green Turning Process

2003 ◽  
Vol 17 (08n09) ◽  
pp. 1388-1394 ◽  
Author(s):  
Seung Han Yang ◽  
Young Moon Lee ◽  
Hee Sool Kim ◽  
Tae Jo Ko
Keyword(s):  
Cutting Temperature ◽  
Multiple Comparisons ◽  
Cutting Condition ◽  
Dry Cutting ◽  
Low Level ◽  
Adequate Amount ◽  
Honestly Significant Difference ◽  
Significant Difference ◽  
High Level ◽  
Tukey Method

Tukey method of multiple comparisons was proposed to decide the adequate amount of coolant re Tukey method of multiple comparisons was proposed to decide the adequate amount of coolant required in machining and to keep the cutting temperature low simultaneously. A new coolant level, termed as "low level", was suggested and it was proved to be approximately one quarter of conventional coolant amount or "high level". "None level" was also used in the experiment to simulate the dry cutting condition. Cutting temperatures according to each different coolant level were analyzed by analysis of variance (ANOVA) test and Tukey method of multiple comparisons. A difference in cutting temperatures was found by ANOVA. According to the further study with Tukey method of Honestly Significant Difference (HSD), there was a temperature difference between "none level" and "low level", but no difference in temperature between "low level" and "high level".

Exploring The Effect of Visual Information Degradation on Human Perception and Performance In A Human-Telerobot System

2020 ◽  
Vol 64 (1) ◽  
pp. 1302-1307
Author(s):  
Richard Stone ◽  
Minglu Wang ◽  
Thomas Schnieders ◽  
Esraa Abdelall
Keyword(s):  
Visual Information ◽  
Human Perception ◽  
Low Level ◽  
Hit Rate ◽  
Word Level ◽  
Level Of Automation ◽  
Significant Difference ◽  
Human Operators ◽  
And Performance ◽  
High Level

Human-robotic interaction system are increasingly becoming integrated into industrial, commercial and emergency service agencies. It is critical that human operators understand and trust automation when these systems support and even make important decisions. The following study focused on human-in-loop telerobotic system performing a reconnaissance operation. Twenty-four subjects were divided into groups based on level of automation (Low-Level Automation (LLA), and High-Level Automation (HLA)). Results indicated a significant difference between low and high word level of control in hit rate when permanent error occurred. In the LLA group, the type of error had a significant effect on the hit rate. In general, the high level of automation was better than the low level of automation, especially if it was more reliable, suggesting that subjects in the HLA group could rely on the automatic implementation to perform the task more effectively and more accurately.

Monitoring of Cutting Conditions with Dry Cutting on CNC Turning Machine

2010 ◽  
Vol 443 ◽  
pp. 382-387 ◽  
Author(s):  
Somkiat Tangjitsitcharoen ◽  
Suthas Ratanakuakangwan
Keyword(s):  
Surface Roughness ◽  
Tool Wear ◽  
Cutting Forces ◽  
Cutting Temperature ◽  
Cutting Conditions ◽  
Cutting Condition ◽  
Nose Radius ◽  
Dry Cutting ◽  
Cnc Turning ◽  
Coated Carbide

This paper presents the additional work of the previous research in order to verify the previously obtained cutting condition by using the different cutting tool geometries. The effects of the cutting conditions with the dry cutting are monitored to obtain the proper cutting condition for the plain carbon steel with the coated carbide tool based on the consideration of the surface roughness and the tool life. The dynamometer is employed and installed on the turret of CNC turning machine to measure the in-process cutting forces. The in-process cutting forces are used to analyze the cutting temperature, the tool wear and the surface roughness. The experimentally obtained results show that the surface roughness and the tool wear can be well explained by the in-process cutting forces. Referring to the criteria, the experimentally obtained proper cutting condition is the same with the previous research except the rake angle and the tool nose radius.

Comparison of Spoilage Rates in Ground Turkey and Ground Beef

1992 ◽  
Vol 55 (7) ◽  
pp. 518-521 ◽  
Author(s):  
N. J. STERN ◽  
C. E. LYON ◽  
M. T. MUSGROVE ◽  
J. A. DICKENS ◽  
R. L. WILSON
Keyword(s):  
Muscle Tissue ◽  
Ground Beef ◽  
Control Group ◽  
Origin Of Species ◽  
Low Level ◽  
Livestock Species ◽  
Plastic Bags ◽  
Significant Difference ◽  
Uninoculated Control ◽  
High Level

Spoilage rates of ground turkey and ground beef were compared. Clean muscle tissue of the two livestock species were ground in a hygienic manner, providing initial mesotrophic counts (72 h at 25°C) in the range of ca. 102–3 CFU/g. Moisture, fat, and protein contents for the ground products were similar. Each ground product was subjected to the following treatments: a) uninoculated control, b) inoculated with a low level of turkey flora, c) inoculated with a high level of turkey flora, d) inoculated with a low level of beef flora, and e) inoculated with a high level of beef flora. Three replicate analyses were performed on the products which were held at 5°C in air-permeable plastic bags. Five subsamples (20–25 g) were taken for each of the five analysis times over 10 d of storage. At completion of storage, bacterial counts varied from 103.5 to 109.2 CFU/g, with the turkey control group at the lower end of the range. Our findings indicate no significant difference between the spoilage rates of the two ground products, regardless of treatment or origin of species.

scholarly journals PENGARUH STRATEGI PELATIHAN DAN PENGETAHUAN KONSEP DASAR EKOLOGI TERHADAP SIKAP TENAGA KERJA YANG BERWAWASAN LINGKUNGAN

2017 ◽  
Vol 12 (2) ◽  
pp. 11-30
Author(s):  
J. E. Endang D. P
Keyword(s):  
Group Discussion ◽  
Training Centre ◽  
Low Level ◽  
Significant Difference ◽  
Regional Labor ◽  
Labor Training ◽  
Level Of Knowledge ◽  
Basic Concepts ◽  
Training Strategies ◽  
High Level

This study aimed at investigating the effect of training strategies and knowledge of basic concepts of ecology on environmental-based attitude of prospective labors. The experimental study with 2x2 factorial designs was conducted at the Regional Labor Training Centre of West Jakarta with training participants of the center involved as subjects of the study. The study has been focused on four Research Questions: (1) Is there any significant difference in the environmental-based attitude of prospective labors who were trained with fieldtrip strategy and those who were trained with group discussion strategy?; (2) Is there any significant difference in the environmental-based attitude of prospective labors with high level of knowledge of basic concepts of ecology who were trained with fieldtrip strategy and those who were trained with group discussion strategy?; (3) Is there any in the environmental-based attitude of prospective labors with low level of knowledge of basic concepts of ecology who were trained with fieldtrip strategy and those who were trained with group discussion strategy?; and (4) Is there any interactions between the effect of training strategies and knowledge of basic concepts of ecology on the environmental-based attitude of prospective labors?Findings of the study signify that (1) there is no significant difference in the environmental-based attitude of prospective labors who were trained with fieldtrip strategy and those who were trained with group discussion strategy; (2) prospective labors with high level of knowledge of basic concepts of ecology who were trained with fieldtrip strategy show better environmental-based attitude compared to those who were trained with group discussion strategy; (3) prospective labors with low level of knowledge of basic concepts of ecology who were trained with group discussion strategy show better environmental-based attitude compared to those who were trained with fieldtrip strategy; and (4) there is an interaction between training strategies and knowledge of basic concepts of ecology on the environmental-based attitude of prospective labors.To sum up, to promote better environmental-based attitude of prospective labors requires appropriate training strategies that is determined by carefully considering their knowledge level on basic concepts of ecology.

iQ-Check Listeria spp. Real-Time PCR Test Kit

2013 ◽  
Vol 96 (3) ◽  
pp. 508-515
Author(s):  
Wendy F Lauer ◽  
Jean-Philippe Tourniaire
Keyword(s):  
Real Time ◽  
Real Time Pcr ◽  
Reference Method ◽  
Sampling Area ◽  
Fermented Sausage ◽  
Low Level ◽  
Test Kit ◽  
Significant Difference ◽  
High Level ◽  
Health Canada

Abstract A comparative evaluation study of the Bio-Rad® iQ-Check™Listeria species Kit (Bio-Rad Laboratories, Hercules, CA) was conducted at Q Laboratories, Inc., Cincinnati, OH. iQ-Check is a rapid method based on real-time PCR amplification and detection of all species of Listeria, including L. grayi, in food and environmental samples. The iQ-Check method was compared to the Health Canada MFHPB-30 reference method for the analysis of five ready-to-eat meats—deli turkey, hot dogs, liver paté, raw fermented sausage, and deli ham—and one stainless steel surface. Each food matrix was analyzed at two contamination levels: a low level at 0.2–2 CFU/25 g and a high level at 2–5 CFU/25 g. The environmental surfaces were analyzed at a low level of 0.2–2 CFU/5 cm2 sampling area and a high level of 2–5 CFU/5 cm2 sampling area. There were 20 replicates per contamination level and five control replicates at 0 CFU/25 g or 0 CFU/5 cm2 sampling area (uninoculated). All samples that were detected by iQ-Check were subsequently confirmed by reference method protocol. There was no significant difference in the number of positive samples detected by the iQ-Check Listeria spp. Kit in comparison to the Health Canada MFHPB-30 method for all matrixes tested.

A Naturalistic Investigation of Media Multitasking While Studying and the Effects on Exam Performance

2016 ◽  
Vol 44 (1) ◽  
pp. 51-57 ◽  
Author(s):  
Michael C. Patterson
Keyword(s):  
Social Networking ◽  
Digital Media ◽  
Digital Technologies ◽  
Exam Performance ◽  
Media Multitasking ◽  
Low Level ◽  
Media Technologies ◽  
Significant Difference ◽  
High Level ◽  
Naturalistic Investigation

The present study investigated the use of multiple digital media technologies, including social networking platforms, by students while preparing for an examination (media multitasking) and the subsequent effects on exam performance. The level of media multitasking (number of simultaneous media technologies) and duration of study were used as predictors of exam performance in a sample of 441 college students. Analysis of the data indicated that students with low level of media multitasking (0–2 digital technologies) scored significantly better on the exam than students with a high level of media multitasking (7 or more digital technologies). There were no significant difference in the duration of study time between low-level media multitaskers and high-level media multitaskers.

scholarly journals RECEPTIVE SKILLS AMONG B.Ed. TRAINEES

2017 ◽  
Vol 5 (3(SE)) ◽  
pp. 13-17
Author(s):  
N. Archana ◽  
K. Somasundaram
Keyword(s):  
Human Activity ◽  
Random Sampling ◽  
Sampling Technique ◽  
Simple Random Sampling ◽  
Primary Data ◽  
Survey Method ◽  
Low Level ◽  
Coimbatore District ◽  
Significant Difference ◽  
High Level

Language and life are inter-related. The scope of language is widened with the widening scope of human activity. Today there is no activity, which does not find its expression in terms of language. Listening and reading are passive or receptive skills and speaking and writing are active or productive skills. The paper is an attempt to find to identify the receptive skills in English among B.Ed trainees. The investigator adopted the survey method to study receptive skills of B.Ed trainees. The study is based on primary data which is collected from 300 BEd trainees in and around Coimbatore district using simple random sampling technique. The findings reveal that totally 25% of the selected B.Ed. trainees belong to low level of receptive skill, 46.6% of the selected BEd trainees belong to moderate level of receptive skill, 26.6% of the selected BEd trainees belong to high level of receptive skill. Also it is found that there is no significant difference in receptive among the selected B.Ed trainees based on gender and locality.

scholarly journals Spiritual Intelligence and Its Relation to Depression Among Eleventh and Twelfth Grades Students of Nizwa in Sultanate of Oman: الذكاء الروحي وعلاقته بالاكتئاب لدى طلبة الصفين الحادي عشر والثاني عشر في ولاية نزوى بسلطنة عمان

2020 ◽  
Vol 4 (44) ◽  
Author(s):  
Khalifa Ahmed Humaid Al-Qassabi, Naila Mahmood Amur Al Burai
Keyword(s):  
Female Students ◽  
Spiritual Intelligence ◽  
Sultanate Of Oman ◽  
Counseling Programs ◽  
Male And Female ◽  
Low Level ◽  
Significant Difference ◽  
Reduction Equation ◽  
High Level ◽  
The Relationship

This study aimed at addressing the relationship between the spiritual intelligence and depression for eleventh and twelfth grades students of Nizwa in Ad-Dakhiliyah Governorate. The study sample included (350) male and female students chosen randomly. The researcher used “King” inventory (2008) of spiritual intelligence translated by Al-Kiumi and Al-Furaisiyah (2018), and the inventory of Arabic depression list for children made by Abdul-Khaliq (1991). The researcher used the descriptive correlative approach. The results showed a high level of spiritual intelligence and low level of depression among the study sample students. There were also statistically significant differences in the level of spiritual intelligence in favor of females, and there was no significant difference in the level of depression except for the dimensions of (lack of focus and pessimism, and self-hatred) in favor of males. The study concluded that spiritual intelligence contributes to reduction of depression by (23.9%). 1. The researchers recommended a set of recommendations, the most important of which are: the use of the depression reduction equation reached by the research, when building counseling programs, and developing spiritual intelligence through curricula and teaching to protect students from depression.

scholarly journals SELF ESTEEM IN RELATION TO ACADEMIC ACHIEVEMENT AMONG HIGHER SECONDARY STUDENTS

2017 ◽  
Vol 5 (5(SE)) ◽  
pp. 27-32
Author(s):  
I. Maria Cecily ◽  
S.Justin Jebaraj
Keyword(s):  
Academic Achievement ◽  
Secondary Students ◽  
Self Esteem ◽  
Moderate Level ◽  
Primary Data ◽  
Survey Method ◽  
School Students ◽  
Low Level ◽  
Significant Difference ◽  
High Level

Self - esteem is how we value ourselves; it is how we perceive our value to the world and how valuable we think we are to others. Self - esteem affects our trust in others, our relationship, our work – nearly every part of our lives. Positive self – esteem gives us the strength and flexibility to take charge of our lives and grow from our mistakes without the fear of rejection. The paper is an attempt to find to identify self-esteem in relation to academic achievement among higher secondary students. The investigator adopted the survey method to study self-esteem of higher secondary students. The study is based on primary data which is collected from 300 higher secondary students in and around Coimbatore district using simple random sampling technique. The findings reveal that totally 25.66% of the selected higher secondary students belong to low level of self-esteem, 42.33% of the selected higher secondary students belong to moderate level of self-esteem, 32% of the selected higher secondary students belong to high level of self-esteem. Totally 24.3% of the selected higher secondary students belong to low level of Academic Achievement, 28.4% of the selected higher secondary students belong to moderate level of Academic Achievement, and 47.3% of the selected higher secondary students belong to high level of Academic Achievement.  Also it is found that there is no significant difference in self-esteem in relation to academic achievement among the selected higher secondary school students.

scholarly journals Depression, anxiety and stress and their associated social determinants in the Saudi college students

2020 ◽  
Vol 8 (3) ◽  
Author(s):  
Shamim Mohammad ◽  
Ibrahim Waleed Almakran ◽  
Ahmad Saleh Al-Montashri ◽  
Ammar Mohammed Mursi ◽  
Saleh Mohammed Alharbi ◽  
...  
Keyword(s):  
Undergraduate Students ◽  
Social Determinants ◽  
Anxiety And Depression ◽  
Test Procedures ◽  
Level Of Education ◽  
Low Level ◽  
Significant Difference ◽  
Stress Levels ◽  
High Level ◽  
Married Students

Globally, students suffer from stress, anxiety, and depression in higher education and seek counselling since education process has negative impacts on mental health of some students. This study was aimed at measuring the depression, stress, and anxiety and their associated social determinants like (income, education, residence, marital status, and educational difficulties) in undergraduate students of Umm Al-Qura University (UQU). Arabic version of the Depression, Anxiety, and Stress Scale (DASS-21) validated from the original English version instrument by Lovibond and Lovibond (1995) was used; A sample of 373 respondents through clustered sampling was drawn from the five randomly chosen faculties of the University. Data was analyzed by running ANOVA and t-test procedures in SPSS software. The study found that the prevalence of stress, anxiety, and depression in the students was 30%, 60%, and 50% respectively. A statistically significant difference was found in the stress levels of students of different colleges (p=0.000). Students’ stress levels were significantly higher (p=0.000) in the Applied Medical Sciences and in the final year students (p=0.015). Significantly high levels of depression (p=0.000), anxiety (p=0.000), and stress (p=0.000) were found in the students belonging to the poor economic strata. Depression (p=0.038), Anxiety (p=0.022), and stress (p=0.001) were statistically high in the students whose father had a low level of education. Statistically high level (p=0.028) of stress was also found in the students whose mothers had a low level of education. Students who reported educational difficulties had significantly (p=0.001) high levels depression. However, the results of stress, anxiety, and depression in married students and the location of the students’ variables were not found statistically significant. The findings may be useful for informed policymaking in the higher learning institutions and initiation of counseling provisions in the concerned faculties for the distressed students with a view to enhancing their educational outcomes.

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