Method and apparatus for detecting flaws and defects in heat seals

Flaws and defects in heat seals formed between sheets of translucent film are identified by optically examining consecutive lateral sections of the seal along the seal length. Each lateral seal section is illuminated and an optical sensor array detects the intensity of light transmitted through the seal section for the purpose of detecting and locating edges in the heat seal. A line profile for each consecutive seal section is derived having an amplitude proportional to the change in light intensity across the seal section. Instances in the derived line profile where the amplitude is greater than a threshold level indicate the detection of a seal edge. The detected edges in each derived line profile are then compared to a preset profile edge standard to identify the existence of a flaw or defect

Effects of mandibular advancement appliances on the upper airway dimensions

poster abstractPurpose: The aim of this retrospective cephalometric study was to investigate dentoskeletal and airway dimensional changes in a group of orthodontic patients with deficient mandible using Herbst vs. MARA appliances. Methods: Pre-treatment and post-treatment lateral cephalometric radiographs of 34 subjects with deficient mandible (aged 9-22 years) were selected from the postgraduate orthodontic clinic archives. The cephalograms were classified into 2 groups . Group 1 (n=17) consisted of cephalograms from individuals treated with a Herbst appliance and group 2 (n=17) consisted of cephalograms from individuals treated with a MARA appliance. Each cephalogram was traced manually and the selected dentoskeletal and airway parameters were recorded for all subjects. Intraclass correlations (ICC) were performed on duplicate measures of 10 cephalograms to assess reliability. Paired t-tests were used to differences in the airway parameters from pre-treatment to post-treatment within groups. Statistical significance was set at P < 0.05. Results: ICC values were ˃0.90 for all measurements. Significant changes were recorded in ANB, N-S, ANS-PNS, Go-Gn, Overbite, Overjet, Co-ANS, Co-Gn, TFH, AFH, and LAFH for both Herbst and MARA groups. Airway parameters such as soft tissue thickness of the posterior pharyngeal wall (Ba-ad1 and Ba-ad2), anteroposterior dimension of bony nasopharynx (Ba-PNS, AA-PNS and AA-ptm), and width of the nasopharyngeal airway space (PNS-ppw1) showed statistically significant decreases in both groups. The Herbst group also showed statistically significant decrease in the sagittal depth of pharyngeal lumen at the nasopharynx and oropharynx (ptm-ad1, PNS-ad1, and PNS-ppw2) while the MARA group demonstrated a statistically significant decrease in the angle represents the anteroposterior dimension of the nasopharynx (AA-S-PNS). Conclusion: Using mandibular advancement appliance decrease significantly the upper airway dimensions. The amount of the change in the upper airway size was variable between Herbst and MARA appliances

The Cauldron, 2015, Issue 01

Fall 2015, Issue 1 of The Cauldron. Cleveland State University is back to school with a new Center for Innovation in Medical Professions building and the annual Week of Welcome. CSU Basketball has a new partnership with Quicken Loans Arena and a CSU student designed a geofilter for the Treemont neighorhood that was accepted by Snapchat. The opinion section features our first Advice with Amara and the feature examines the role of student debt in the 2016 presidential election.https://engagedscholarship.csuohio.edu/cauldron_archives/1000/thumbnail.jp

The Cauldron, 2015, Issue 01

Fall 2015, Issue 1 of The Cauldron. Cleveland State University is back to school with a new Center for Innovation in Medical Professions building and the annual Week of Welcome. CSU Basketball has a new partnership with Quicken Loans Arena and a CSU student designed a geofilter for the Treemont neighorhood that was accepted by Snapchat. The opinion section features our first Advice with Amara and the feature examines the role of student debt in the 2016 presidential election.https://engagedscholarship.csuohio.edu/cauldron_archives/1000/thumbnail.jp

The Cauldron, 2015, Issue 08

Issue 8 of The Cauldron focused on the issue of homelessness at CSU and what it\u27s like to be a homeless student working through college. We also reported on TEDxCleveland State University and previewed the upcoming season for men\u27s and women\u27s basketball. The Cauldron showcased students who rock and reviewed theatre, comedy, and film presentations. Finally, the OP section tackled race issues and the hot topic Black Lives Matter movement.https://engagedscholarship.csuohio.edu/cauldron_archives/1007/thumbnail.jp

The Cauldron, 2015, Issue 01

Fall 2015, Issue 1 of The Cauldron. Cleveland State University is back to school with a new Center for Innovation in Medical Professions building and the annual Week of Welcome. CSU Basketball has a new partnership with Quicken Loans Arena and a CSU student designed a geofilter for the Treemont neighorhood that was accepted by Snapchat. The opinion section features our first Advice with Amara and the feature examines the role of student debt in the 2016 presidential election.https://engagedscholarship.csuohio.edu/cauldron_archives/1000/thumbnail.jp

The Cauldron, 2015, Issue 08

Issue 8 of The Cauldron focused on the issue of homelessness at CSU and what it\u27s like to be a homeless student working through college. We also reported on TEDxCleveland State University and previewed the upcoming season for men\u27s and women\u27s basketball. The Cauldron showcased students who rock and reviewed theatre, comedy, and film presentations. Finally, the OP section tackled race issues and the hot topic Black Lives Matter movement.https://engagedscholarship.csuohio.edu/cauldron_archives/1007/thumbnail.jp

Scale development for pre-service mathematics teachers’ perceptions related to their pedagogical content knowledge

The purpose of this study is to develop a scale to determine pre-service mathematics teachers’ perceptions related to their pedagogical content knowledge. Firstly, a preliminary perception scale of pedagogical content knowledge was constructed and then administered to 112 pre-service mathematics teachers who were enrolled in a mathematics teacher education programme. Exploratory and confirmatory factor analysis, item analysis, correlation analysis, internal consistency and descriptive statistic techniques were used to analyse the data. Then validity and reliability of the scale were investigated. The analyses resulted in the development of a five-factor scale of 17 items that was proved valid and reliable. We contend that the scale developed has the merit to contribute to pre-service teachers’ self-awareness by revealing their perceptions regarding their pedagogical content knowledge.Keywords: pedagogical content knowledge, pre-service mathematics teachers,scale developmen

Using the stated preference method for the calculation of social discount rate

The aim of this paper is to build the stated preference method into the social discount rate methodology. The first part of the paper presents the results of a survey about stated time preferences through pair-choice decision situations for various topics and time horizons. It is assumed that stated time preferences differ from calculated time preferences and that the extent of stated rates depends on the time period, and on how much respondents are financially and emotionally involved in the transactions. A significant question remains: how can the gap between the calculation and the results of surveys be resolved, and how can the real time preferences of individuals be interpreted using a social time preference rate. The second part of the paper estimates the social time preference rate for Hungary using the results of the survey, while paying special attention to the pure time preference component. The results suggest that the current method of calculation of the pure time preference rate does not reflect the real attitudes of individuals towards future generations