Indicators for Measuring Changeover Activities

Author(s):  
Yuridia Vega ◽  
Roberto Romero-López ◽  
Norma Alicia Barboza-Tello ◽  
Alex Bernardo Pimentel-Mendoza ◽  
Manuel Javier Rosel-Solis

At present, the manufacturing industries require the implementation of more efficient and flexible fabrication processes to offer high-quality products. The changeover methodologies can be used to reduce the setup times, allowing the industries to be more competitive. The application of changeover methodologies is mainly influenced by the 4Ps model, which is composed of organizational and design factors, such as people, practices, product, and processes. However, this model is not useful in determining the relationship between each one of the Ps and the changeover activities. In this chapter, the authors have developed an exhaustive review of the references to establish the indicators to design an instrument composed of 79 items and divided into the five constructs of the 4P model, which was statistically validated using the Kendall W indicator and the Cronbach´s alpha indicator.

2019 ◽  
Vol 63 (3) ◽  
pp. 115-128 ◽  
Author(s):  
Maie Stein ◽  
Sylvie Vincent-Höper ◽  
Nicole Deci ◽  
Sabine Gregersen ◽  
Albert Nienhaus

Abstract. To advance knowledge of the mechanisms underlying the relationship between leadership and employees’ well-being, this study examines leaders’ effects on their employees’ compensatory coping efforts. Using an extension of the job demands–resources model, we propose that high-quality leader–member exchange (LMX) allows employees to cope with high job demands without increasing their effort expenditure through the extension of working hours. Data analyses ( N = 356) revealed that LMX buffers the effect of quantitative demands on the extension of working hours such that the indirect effect of quantitative demands on emotional exhaustion is only significant at low and average levels of LMX. This study indicates that integrating leadership with employees’ coping efforts into a unifying model contributes to understanding how leadership is related to employees’ well-being. The notion that leaders can affect their employees’ use of compensatory coping efforts that detract from well-being offers promising approaches to the promotion of workplace health.


2021 ◽  
Author(s):  
Robbie I’Anson Price ◽  
Francisca Segers ◽  
Amelia Berger ◽  
Fabio S Nascimento ◽  
Christoph Grüter

Abstract Social information is widely used in the animal kingdom and can be highly adaptive. In social insects, foragers can use social information to find food, avoid danger or choose a new nest site. Copying others allows individuals to obtain information without having to sample the environment. When foragers communicate information they will often only advertise high quality food sources, thereby filtering out less adaptive information. Stingless bees, a large pantropical group of highly eusocial bees, face intense inter- and intra-specific competition for limited resources, yet display disparate foraging strategies. Within the same environment there are species that communicate the location of food resources to nest-mates and species that do not. Our current understanding of why some species communicate foraging sites while others do not is limited. Studying freely foraging colonies of several co-existing stingless bee species in Brazil, we investigated if recruitment to specific food locations is linked to (1) the sugar content of forage, (2) the duration of foraging trips and (3) the variation in activity of a colony from one day to another and the variation in activity in a species over a day. We found that, contrary to our expectations, species with recruitment communication did not return with higher quality forage than species that do not recruit nestmates. Furthermore, foragers from recruiting species did not have shorter foraging trip durations than those from weakly-recruiting species. Given the intense inter- and intraspecific competition for resources in these environments, it may be that recruiting species favour food resources that can be monopolised by the colony rather than food sources that offer high-quality rewards.


2011 ◽  
Vol 243-249 ◽  
pp. 4956-4959
Author(s):  
Jian Chao Hao ◽  
Hui Fen Liu ◽  
Dong Ling Wei ◽  
Li Jun Shi ◽  
Jun Li Li ◽  
...  

The relationship between formaldehyde emission and time was researched and a mathematical model was developed which describes the variation of formaldehyde with time in the airtight chamber. It was found that high quality composite floor was in line with 0-order kinetic equation and low quality composite floor was in line with 1-order kinetic equation. Besides, the effect of activated carbon adsorption on formaldehyde was studied and the result showed that activated carbon had poor adsorption on formaldehyde for weak van der waals force.


2015 ◽  
Vol 3 (2) ◽  
pp. 121
Author(s):  
Ying-Leh Ling ◽  
Fairuz Ismail ◽  
Abdul Ghani Kanesan Abdullah

This study aims to examine the relationship between feedback environment practices and creativity in the educational organizations. This study is a quantitative study. A total of 40 polytechnic students from Polytechnic Kuching Sarawak are randomly selected to participate in this study. Data were obtained using a set of questionnaire consisting of three parts. The data obtained were analyzed descriptively and inferentially. Inferential analysis involves <em>t</em> test and Pearson correlation. The findings have shown that the level of feedback environment based on students' perception is high. Simultaneously, the level of creativity among the students is also high. The findings indicated that there is no significant difference in feedback environment between genders. Furthermore, the study also showed a significant and positive relationship between feedback environment and students’ creativity. The results of this study have several implications directly to the formation of high-quality students as feedback environment and students’ creativity are interrelated and inseparable in educational organizations.


2019 ◽  
Author(s):  
Hua Xu ◽  
Xin Wang ◽  
Zhikai Wang ◽  
Jianhui Li ◽  
Zhiming Xu ◽  
...  

Abstract Background: MicroRNAs (miRNAs) are a class of noncoding small RNAs that play important roles in many physiological processes by regulating gene expression. Previous studies have shown that the expression levels of total miRNAs increase during mouse embryonic development, and some miRNAs control the regulatory network in development progression. However, few studies have focused on the effects of miRNAs on early human embryonic development. The relationship between miRNAs and early human embryogenesis is still unknown. Results:In this study, RNA-seq data collected from sperm samples from 102 patients with a normal sperm index but treated with assisted reproductive technology (ART) were analyzed for the relationships between differentially expressed small RNAs and the fertilization rate (FR), blastocyst rate and high-quality embryo rate (HQER). The sperm samples with high hsa-mir-191 expression had a higher FR, effective embryo rate (EER) and HQER. hsa-mir-191 was used as a single indicator to predict the HQER. The receiver operating characteristic (ROC) curve had an area under the ROC curve (AUC) of 0.686. We also found that hsa-mir-191 expression is correlated with an abnormal sperm rate (cor = 0.29, p< 0.01). We also evaluated the relationship between hsa-mir-34c and early human embryo development in these 102 sperm samples and obtained negative results. Conclusions: These findings suggest that high hsa-mir-191-5p expression in sperm is associated with early human embryonic quality and that hsa-mir-191-5p could be used as a potential marker to screen high-quality sperm to improve the success rates of in vitro fertilization (IVF).


2019 ◽  
Author(s):  
Hua Xu ◽  
Xin Wang ◽  
Zhikai Wang ◽  
Jianhui Li ◽  
Zhiming Xu ◽  
...  

Abstract Background : MicroRNAs (miRNAs) are a class of noncoding small RNAs that play important roles in many physiological processes by regulating gene expression. Previous studies have shown that the expression levels of total miRNAs increase during mouse embryonic development, and some miRNAs control the regulatory network in development progression. However, few studies have focused on the effects of miRNAs on early human embryonic development. The relationship between miRNAs and early human embryogenesis is still unknown. Results: In this study, sperm samples from 102 patients with a normal sperm index but treated with assisted reproductive technology (ART) were collected for small RNA sequencing, and the relationships between differentially expressed small RNAs and the fertilization rate (FR), blastocyst rate and high-quality embryo rate (HQER) were analyzed. The sperm samples with high hsa-mir-191 expression had a higher FR, effective embryo rate (EER) and HQER. hsa-mir-191 was used as a single indicator to predict the HQER. The receiver operating characteristic (ROC) curve had an area under the ROC curve (AUC) of 0.686. We also found that hsa-mir-191 expression is correlated with an abnormal sperm rate (cor = 0.29, p < 0.01). We also evaluated the relationship between hsa-mir-34c and early human embryo development in these 102 sperm samples and obtained negative results. Conclusions: These findings suggest that high hsa-mir-191-5p expression is associated with improved early human embryonic development and that hsa-mir-191-5p could be used as a potential marker to screen high-quality sperm to improve the success rates of in vitro fertilization (IVF).


2019 ◽  
Vol 23 (02) ◽  
pp. 1950011 ◽  
Author(s):  
OUAFA SAKKA ◽  
JOSÉE ST-PIERRE ◽  
MOUJIB BAHRI

This study articulates and tests the direct and indirect relationships between the company’s innovation orientation (IO), its collection and dissemination (C&D) of external information among the organisational members, and the level of success of its innovation collaborations involving customers, suppliers, and research organisations. Our conceptual framework is developed based on an integration of the literatures on organisational capabilities, marketing, innovation, and management control. We empirically test these relationships on a sample of 117 small-to-medium enterprises (SME) operating in Low-to-Medium-Tech (LMT) manufacturing industries. Partial Least Squares (PLS) results reveal that the relationship between the firm’s IO and the success of its customer collaborations is partially mediated by the C&D of external information. We also find that the relationship between the firm’s IO and the success of supplier collaborations is direct, and that the C&D of external information has no effect on the success of such collaborations. Finally the relationship between IO, C&D of external information and the success of research organisation collaborations is found to be indirect. Overall, these findings suggest that developing successful innovation collaborations in LMT sectors requires that SME managers start by building an internal culture that promotes innovation, learning and openness to the external environment.


Author(s):  
Ramita Abdul Rahim ◽  
Noor Azrin Mohammad Nasir ◽  
Marlita Mat Yusof ◽  
Nor Lela Ahmad

Objective - The main objective of this study is to investigatestrategic reward systems that are intrinsic and extrinsic reward for employees. The rewards address four areas that consist of compensation, benefits, recognition and appreciation. This study discussed whether the reward system gives more benefit to the organization and employees such as improving the employee level of creativity or vice versa. Methodology/Technique - This study is a correlational study where the researchers examined the relationship between reward system and employee's creativity among administrative support personnel in the manufacturing industries. This study focused on five (5) selected manufacturing organization involved in electronic field located in Shah Alam Selangor. The total population is one hundred and sixty (160) staff. Findings - The research findings show that rewards are contributing factors to the employees' creativity or ideas among administrative support personnel in the manufacturing industries in Shah Alam. By providing employees with extrinsic rewards is relatively straightforward and usually built into performance and particularly useful in the short-term for creativity and motivating employees to work towards one specific organizational goal. Novelty - The finding of this study would enhance understanding of the issues of reward system among employers in manufacturing organizations which can influence the effectiveness of employee creativity. It also will be beneficial to the management in puttingsuch efforts to increase employees' creativity. Type of Paper - Empirical Paper Keywords : Extrinsic Reward; Intrinsic Reward; Employee Creativity; Manufacturing Organization.


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