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Multi-layered Visual Realities: The Image-Image Relationship
Hans-Martin Rall,Wibke Weber,Elke Reinhuber,Deborah Harzenmoser 중앙대학교 영상콘텐츠융합연구소 2019 TechArt :Journal of Arts and Imaging Science Vol.6 No.4
This paper deals with a visual phenomenon that is becoming increasingly relevant: the multi-layeredness of images. With the advent of augmented reality, we can observe how our real environment and the screen are enhanced by additional layers so that the images turn into multi-images. By multi-layered images, we understand one or more additional layers that are implemented over the first image (real environment) or the first screen by using different techniques such as picture-in-picture features, animation and animated graphics, parallax effects, stylistic references, holograms, or second screen viewing with mobile devices and AR apps. However, little attention has been paid to this phenomenon in visual communication studies. This article is intended as a first step towards closing this gap. The theoretical backdrop for our investigation is the reality-virtuality- continuum defined by Milgram and Kishino and the studies and theoretical literature that deal with the image-text relationship. We present a heuristic model of image-image relationship that is based on the main categories of elaboration and extension. In two case studies, we analyzed the image-image relationship in nonfiction genres (documentary and journalism), and developed a preliminary taxonomy. The aim of this paper is to better understand the image-image relationship of multi-layered images in real and augmented environments.
Predicting Surgery Targets in Temporal Lobe Epilepsy through Structural Connectome Based Simulations
Hutchings, Frances,Han, Cheol E.,Keller, Simon S.,Weber, Bernd,Taylor, Peter N.,Kaiser, Marcus Public Library of Science 2015 PLoS computational biology Vol.11 No.12
<▼1><P>Temporal lobe epilepsy (TLE) is a prevalent neurological disorder resulting in disruptive seizures. In the case of drug resistant epilepsy resective surgery is often considered. This is a procedure hampered by unpredictable success rates, with many patients continuing to have seizures even after surgery. In this study we apply a computational model of epilepsy to patient specific structural connectivity derived from diffusion tensor imaging (DTI) of 22 individuals with left TLE and 39 healthy controls. We validate the model by examining patient-control differences in simulated seizure onset time and network location. We then investigate the potential of the model for surgery prediction by performing <I>in silico</I> surgical resections, removing nodes from patient networks and comparing seizure likelihood post-surgery to pre-surgery simulations. We find that, first, patients tend to transit from non-epileptic to epileptic states more often than controls in the model. Second, regions in the left hemisphere (particularly within temporal and subcortical regions) that are known to be involved in TLE are the most frequent starting points for seizures in patients in the model. In addition, our analysis also implicates regions in the contralateral and frontal locations which may play a role in seizure spreading or surgery resistance. Finally, the model predicts that patient-specific surgery (resection areas chosen on an individual, model-prompted, basis and not following a predefined procedure) may lead to better outcomes than the currently used routine clinical procedure. Taken together this work provides a first step towards patient specific computational modelling of epilepsy surgery in order to inform treatment strategies in individuals.</P></▼1><▼2><P><B>Author Summary</B></P><P>Temporal lobe epilepsy (TLE) is a disorder characterised by unpredictable seizures, where surgical removal of brain tissue is often the final treatment option. In roughly 30% of cases surgery procedures are unsuccessful at preventing future seizures. This paper shows the application of a computational model which uses patient derived brain connectivity to predict the success rates of surgery in people with TLE. We consider the brains of 22 patients as networks, with brain regions as nodes and the white matter connections between them as edges. The brain network is unique to each subject and produced from brain imaging scans of 22 patients and 39 controls. Seizures are simulated before and after surgery, where surgery in the model is the removal of nodes from the network. The model successfully identifies regions known to be involved in TLE, and its predicted success rates for surgery are close to the results found in reality. The model additionally provides patient specific recommendations for surgical procedures, which in simulations show improved results compared to standard surgery in every case. This is a first step towards designing personalised surgery procedures in order to improve surgery success rates.</P></▼2>
SEED DEVELOPMENT : DEVELOPMENTAL AND METABOLIC REGULATION OF STORAGE COMPOUND SYNTHESIS
Ulrich Wobus,Hans Weber,Ludmilla Borisjuk,Reinhard Panitz,Ute Heim,Peter Buchner,Helmut Bäumlein,Winfriede Weschke Plant molecular biology and biotechnology research 1994 Proceedings the 2nd Korean-Germany joint symposium Vol.1994 No.-
Jung-Woo Lee,Hans-Peter Weber,Ahran Pae,Heesu Lee,Hyun-jung Choi,Yong-Dae Kwon 대한치과보철학회 2014 The Journal of Advanced Prosthodontics Vol.6 No.5
PURPOSE The objective of this study was to investigate the biologic effects of enamel matrix derivative (EMD) with different concentrations on cell viability and the genetic expression of human gingival fibroblasts (HGF) to zirconia surfaces. MATERIALS AND METHODS Immortalized human gingival fibroblasts (HGF) were cultured (1) without EMD, (2) with EMD 25 µg/mL, and (3) with EMD 100 µg/mL on zirconia discs. MTT assay was performed to evaluate the cell proliferation activity and SEM was carried out to examine the cellular morphology and attachment. The mRNA expression of collagen type I, osteopontin, fibronectin, and TGF-β1 was evaluated with the real-time polymerase chain reaction (RT-PCR). RESULTS From MTT assay, HGF showed more proliferation in EMD 25 µg/mL group than control and EMD 100 µg/mL group (P<.05). HGFs showed more flattened cellular morphology on the experimental groups than on the control group after 4h culture and more cellular attachments were observed on EMD 25 µg/mL group and EMD 100 µg/mL group after 24h culture. After 48h of culture, cellular attachment was similar in all groups. The mRNA expression of type I collagen increased in a concentration dependent manner. The genetic expression of osteopontin, fibronectin, and TGF-β1 was increased at EMD 100 µg/mL. However, the mRNA expression of proteins associated with cellular attachment was decreased at EMD 25 µg/mL. CONCLUSION Through this short term culture of HGF on zirconium discs, we conclude that EMD affects the proliferation, attachment, and cell morphology of HGF cells. Also, EMD stimulates production of extracellular matrix collagen, osteopontin, and TGF-β1 in high concentration levels. CLINICAL RELEVANCE With the use of EMD, protective barrier between attached gingiva and transmucosal zirconia abutment may be enhanced leading to final esthetic results with implants.
Achieving immediate function with provisional prostheses after implant placement : A clinical report
Kwon, Kung-Rock,Amit Sachdeo,Hans-Peter Weber KYUNG HEE UNIVERSITY MEDICAL CENTER 2006 고황의학상 수상논문집 Vol.21-22 No.-
Two different techniques for "immediate function" after implant placement, using an implant-supported mandibular overdenture, were presented. Both options help reduce the time between implant placement and restoration of the patient's masticatory function, making implant treatment more acceptable to the patient.
Kwon, Yong-Dae,Choi, Hyun-Jung,Lee, Heesu,Lee, Jung-Woo,Weber, Hans-Peter,Pae, Ahran The Korean Academy of Prosthodonitics 2014 The Journal of Advanced Prosthodontics Vol.6 No.5
PURPOSE. The objective of this study was to investigate the biologic effects of enamel matrix derivative (EMD) with different concentrations on cell viability and the genetic expression of human gingival fibroblasts (HGF) to zirconia surfaces. MATERIALS AND METHODS. Immortalized human gingival fibroblasts (HGF) were cultured (1) without EMD, (2) with EMD $25{\mu}g/mL$, and (3) with EMD $100{\mu}g/mL$ on zirconia discs. MTT assay was performed to evaluate the cell proliferation activity and SEM was carried out to examine the cellular morphology and attachment. The mRNA expression of collagen type I, osteopontin, fibronectin, and TGF-${\beta}1$ was evaluated with the real-time polymerase chain reaction (RT-PCR). RESULTS. From MTT assay, HGF showed more proliferation in EMD $25{\mu}g/mL$ group than control and EMD $100{\mu}g/mL$ group (P<.05). HGFs showed more flattened cellular morphology on the experimental groups than on the control group after 4h culture and more cellular attachments were observed on EMD $25{\mu}g/mL$ group and EMD $100{\mu}g/mL$ group after 24h culture. After 48h of culture, cellular attachment was similar in all groups. The mRNA expression of type I collagen increased in a concentration dependent manner. The genetic expression of osteopontin, fibronectin, and TGF-${\beta}1$ was increased at EMD $100{\mu}g/mL$. However, the mRNA expression of proteins associated with cellular attachment was decreased at EMD $25{\mu}g/mL$. CONCLUSION. Through this short term culture of HGF on zirconium discs, we conclude that EMD affects the proliferation, attachment, and cell morphology of HGF cells. Also, EMD stimulates production of extracellular matrix collagen, osteopontin, and TGF-${\beta}1$ in high concentration levels. CLINICAL RELEVANCE. With the use of EMD, protective barrier between attached gingiva and transmucosal zirconia abutment may be enhanced leading to final esthetic results with implants.