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Chun, Youngpil,Mulcahy, Dennis,Zou, Linda,Kim, In S.,Le-Clech, Pierre Taylor Francis 2016 Desalination and Water Treatment Vol.57 No.55
<P>This study investigated the effect of membrane surface properties on membrane biofouling in a submerged membrane bioreactor treating synthetic wastewater, by employing qualitative membrane surface examination techniques and biofilm quantification. The investigation was carried out on three different types of fouled membrane samples obtained using different filtration methods. Lipid phosphate concentration, which represents viable biomass, was employed as a direct measure of biofouling. Contact angle and zeta potential measurements of clean and fouled ultrafiltration and hollow fibre membranes were conducted. Zeta potentials of membrane samples were measured at various electrolyte pHs. The surface energy of membrane samples was calculated and reported from the data obtained from contact angle of measurements. The outcomes from this study can be used as the basis of a technique to examine the potential of biofouling in membrane processes.</P>
A Metacognitive Instructional Approach for Developing Self-Directed Learners
Wiles, W.A.,Mulcahy, R.F. 中央大學校 韓國敎育問題硏究所 1996 韓國敎育問題硏究所論文集 Vol.- No.11
Recent development in cognitive psychology and education indicates that students who demonstrate self-directed learning are better equipped to promote their own academic achievement. This appears to be particularly true for those students who display learning difficulties. In this paper the concept of self-directed learning is first briefly described. Then an instructional approach to developing self-directed learners is presented including its underlying assumptions, instructional model, teacher training procedures, as well as some research findings with students who are normally achieving, gifted, and those with learning difficulties. These students were all accommodated within regular classroom settings.
Keogh Cillian J.,Mulcahy David,Reidy Declan,Beverland David E.,Harty James A. 대한슬관절학회 2020 대한슬관절학회지 Vol.32 No.-
Introduction: Polyethylene (PE) spinout is a known but uncommon complication when using a mobile-bearing (MB) total knee arthroplasty (TKA) design. Sacrificing the posterior cruciate ligament (PCL) is within the manufacturer’s recommendations for the Attune® Cruciate-Retaining Rotating-Platform (CR RP) knee design. Aim: To discuss the potential aetiology and prevention of spinout in the Attune® CR RP knee. Methods: We used a retrospective radiological review from two centres reporting a higher rate of spinout in the Attune® CR RP knee using a cruciate-sacrificing and measured-resection technique when compared to a gapbalancing technique. Three hundred and thirty-two patients were evaluated over a 3-year period. Results: There were 8 out of 279 (2.86%) cases of spinout in our first cohort of patients using a measured-resection technique. There were 0 out of 53 cases of spinout in our second cohort of patients where a gap-balancing technique was used. One spinout was reduced closed, the other seven were initially revised to a thicker RP insert of the same design. Of these seven, three underwent a further revision TKA and one patient required a knee fusion/arthrodesis. Conclusions: This study reports a higher incidence of PE spinout in the Attune® CR RP TKA when a measuredresection technique in combination with PCL resection is performed. We recommend a gap-balancing technique with conservative soft-tissue release if the surgeon is planning to sacrifice the PCL in the Attune® CR RP.
Promoting Deep Approaches to Learning : Instructional Implications
David Peat,Robert Mulcahy,Lorraine Wilgosh 대한사고개발학회 1996 The International Journal of Creativity & Problem Vol.6 No.2
The paper addresses tl1e weakness inherent in sets of guidelines, for classroom application of basic processes of education: namely, lack of an integrating, compreheinsive model of learning. An adaptation of Biggs'(e.g., 1991a; 1991b) comprehensive 3P Model of Learning is described, one framework that accounts for relationships between teaching methodologies and differing kinds or types of learning advanced by various instructional approaches. Bases upon the model, the nature of students' approaches to learning that should be encouraged in school contexts, the advantages of fostering students' development into individuals who consciously utilize metacognition in their approach to learning, and methodologies which should foster ~ learning are presented.
An Investigation into Physical Size Limitations of Microelectronic Chemical Sensors
Yeow, Terence C.W.,Haskard, Malcolm R.,Mulcahy, Dennis E. 경북대학교 센서기술연구소 1994 센서技術學術大會論文集 Vol.5 No.1
Microelectronic chemical sensors have paved the way for researchers to design and fabricate very large chemical sensor arrays with in-built electronic circuitry. Their extremely small dimensions, however, may pose a problem to their basic sensor characteristics, such as sensitivity and response time. In this paper, a preliminary investigation is undertaken to determine if there are any physical size limitations in implementing microelectronic chemical sensors to form a large sensor or biosensor array. Two types of microelectronic sensors were used in this investigation, thick film hybrid sensors and ion-sensitive field-effect transistors. Experimental results confirmed theoretical expectations that there are no physical size limitations in implementing these sensors in a large array.
Design of a New ISFET Array Chip
Yeow, Terence,Seo, Hwa Il,Mulcahy, Dennis,Haskard, Malcolm 한국센서학회 1995 센서학회지 Vol.4 No.4
A new ISFET array chip, based on detection of the threshold voltages of ISFETs by using an adjustable input, was designed. The chip includes 240 pH-ISFETs and circuitry such as comparators, a decoder and register. The chip has increased reliability, improved accuracy, digital output capability and the possibility of multisensor implementation. To fabricate the chip, an extended CMOS process was devised and implemented.
Kaiwen Xue,Sven Tuzovic,Udo Gottlieb,Rory Mulcahy 글로벌지식마케팅경영학회 2023 Global Marketing Conference Vol.2023 No.07
The use of AI chatbots in frontline customer service is beneficial as it can provide quick service responses, cost-saving on human employees and accelerate customers’ decision-making process. However, implementing chatbots can be a double-edged sword. On the one hand, companies benefit from the use of chatbots. On the other hand, it may hurt customer experience as customers perceive chatbots are less trustworthy and show less social presence. Service failures today have become more unpredictable with the increasing complexity of social environments. Aligning with the trends of online customer service, customers are most likely to encounter a chatbot when seeking online customer service to solve service failures. With most of the previous literature investigating customers’ perceptions of chatbots and chatbot-related service failures, little research has focused on the area where chatbots as service recovery agents and how customers perceive the use of chatbots handling their service requests after service failures.
Process Analysis of Planning in Grade 4 and Grade 8 Students
Rauno K. Parrila,Timothy C. Papadopoulos,Robert F. Mulcahy 대한사고개발학회 1997 The International Journal of Creativity & Problem Vol.7 No.1
This article presents a study that used both product (accuracy and performance time) and protocol data (think aloud protocols) to study how children solved a complex and knowledge-lean Crack-the-Code task. Participants were 8 children from two different grade levels (4 and 8; N=4 in both). Between group comparisons in product measures showed that older participants solved more items correctly, took longer time to produce their answers, and verbalized more while completing the items. Protocol data indicated that while Grade 4 participants approached all items in a similar and rather unreflective manner, Grade 8 participants adjusted their performances to the increasing level of difficulty by adding more components to their planning approach. Educational implications of the results are discussed together with the use of the Crack-the-Code task and verbal protocols for detecting both general trends and individual differences in children's planning.