This paper deals with the single machine multi-product lot scheduling problem in which defective items are produced in any production run of each product. We have adopted the common cycle scheduling policy and assumed that the setup times for production of each product can be non-zero. Further, we have assumed that defective items will be reworked and the inspection costs during the normal prod...

INTRODUCTION Fatigue is a disruptive symptom that inhibits normal functional performance of COPD patients in daily activities. The availability of a short, simple, reliable and valid scale would improve assessment of the characteristics and influence of fatigue in COPD. METHODS At baseline, 2107 COPD patients from the ECLIPSE cohort completed the Functional Assessment of Chronic Illness Thera...

International Journal of Medicine and Public Health,2021,11,2,96-102.DOI:10.5530/ijmedph.2021.2.17Published:May 2021Type:Original ArticlePrevalence Sub-health Status among College Students in Guangzhou Baiyun Technician Business during the Coronavirus PandemicYan-Qi Liao, Ming-Ming Li, Wan-Xian Lu, Yan-Bin Pan, Jian-Rong Gong, Miao-Hang Shan Yan-Qi Liao1, Li1, Lu1,*, Pan1, Gong2, Shan1 1The Fir...

background:   measuring content validity of instruments are important. this type of validity can help to ensure construct validity and give confidence to the readers and researchers about instruments. content validity refers to the degree that the instrument covers the content that it is supposed to measure. for content validity two judgments are necessary: the measurable extent of each item fo...

The aim of this study is to investigate prospective teachers' environmental education self-efficacy in terms various variables. Survey method was applied the study, and data were collected 2015-2016 academic year. group paper consisted 172 teachers from each grade level who are studying Social Studies Department, Faculty Education, Afyon Kocatepe University. with scale developed by Özdemir, Ayd...

This research examined how the presentation of items related to goals and temptations influences the dynamic of self-regulation, as reflected in evaluation and choice. The authors found that when items, such as healthy and unhealthy foods or academic and leisure activities, are presented together in a unified choice set (e.g., in 1 image) and seem to complement each other, people express a posi...

This research examined how the presentation of items related to goals and temptations influences the dynamic of self-regulation, as reflected in evaluation and choice. The authors found that when items, such as healthy and unhealthy foods or academic and leisure activities, are presented together in a unified choice set (e.g., in 1 image) and seem to complement each other, people express a posi...

BACKGROUND In the Middle East and North Africa (MENA), hepatitis C virus (HCV) distribution appears to present a wide range of prevalence. The scale and nature of HCV disease burden is poorly known in the Horn of Africa sub-region of MENA including Djibouti, Somalia, and Sudan in addition to Yemen at the southwest corner of the Arabian Peninsula. The aim of this review is to provide a systemati...