Commercial acceptance of microstructured polymer optical fibres (MPOFs) is dependent on their delivery of an acceptable combination of loss and bandwidth. This paper describes recent advances in one attempt at quantifying multimode MPOF performance with a view to developing various graded index MPOFs (GIMPOFs) using structures made up of either air or polymer-filled holes.

Media use and screen time show both positive negative effects on child development. Parents’ behaviors, perceptions, regulation of parent screen-based device (SBD) may be critical understudied factors in explaining these mixed effects. We developed the Parent Screen-Based Device Use Survey (PSUS) to assess parental multiple SBDs (e.g., computers, phones, TVs) tested its factor structure across ...

The current study sought to investigate the extent which early childhood educators’ confidence in knowledge, attitudes and self-efficacy for supporting self-regulation predicted educator behavior children’s outcomes. Data from a diverse sample of 165 educators participating cluster Randomized Control Trial evaluation intervention were utilized evaluate construct validity, reliability predictive...

Social-emotional behavior of 352 3- and 4-year-olds attending private child-care and Head Start programs was observed using the Minnesota Preschool Affect Checklist, Revised (MPAC-R). Goals of the investigation included (a) using MPAC-R data to extract a shortened version, MPAC-R/S, comparing structure, internal consistency, test-retest reliability, and stability of both versions; and, using th...

Benefits In the past, preventive maintenance was performed without any guidance or regard for safety or cost concerns, as long as systems performed their functions. The primary reason for the development of RCM was to implement a preventive maintenance strategy that could adequately address system availability and safety at the lowest possible cost. The RCM process answers and directs preventiv...

BACKGROUND The formulation and implementation of national ethical regulations to protect research participants is fundamental to ethical conduct of research. Ethics education and capacity are inadequate in developing African countries. This study was designed to develop a module for online training in research ethics based on the Nigerian National Code of Health Research Ethics and assess its e...

the present research investigated the effect of self-regulatory approach (with two components of self-checking and self-efficacy) on pre-intermediate iranian learners' lexical segmentation in listening comprehension via authentic listening comprehension texts. to achieve this purpose, the investigators administered an oxford placement test (2007) to ninety-eight students of two girls’ priv...

the purpose of the present study is to examine the effects of ego depletion on arousal of elite iranian swimmers. the sample comprised elite swimmers invited to the national swimming team as focused and semi focused (36 subjects). the research design was as pre- and post-test—in two phases of ego depletion conditions and the lack of ego depletion conditions in two experimental and control group...

emotion regulation difficulties are from the factors that caused the incidents and automobile accidents and work related. this study aimed to comparing emotion regulation difficulties in mild traumatic brain injury (tbi) patients and normal people in kashan.the study was performed on 30 tbi patients referred to shahid beheshti hospital in kashan city and 30 normal people in kashan. tbi patients...

objective: the purpose of this research was to investigate the role of the media, perfectionism, and difficulties in emotion regulation in prediction of muscle dysmorphia symptoms.  methods: in this research, 240 male body-builders were selected from five gyms in gorgan (north of iran). they were required to answer muscle dysmorphia disorder inventory (mddi), multidimensional perfectionism scal...