Localisation of passenger experience through digital channels

International air transport is growing rapidly, with 2 million international passengers flying every day. Airlines must provide innovative and differentiated services, which are based on local culture and behaviours, and tailored to passengers’ needs and desires. However, behavioural studies in the airline industry are still absent from both academia and the field. Hence, this case study investigates the following research question: What are the opportunity areas to localise airline services in the Korean market, while maintaining the cultural identity of the airline as a crucial part of the travel experience? The main focus of this master’s thesis is a case study of a Finnish airline company targeting the Korean market. The study derives insights through the application of service design methods and tools based on a passenger-centric approach. In total, 21 insights were obtained from Korean travellers and the diverse internal stakeholders of the company in South Korea and Finland. The research reveals that understanding local behaviours should play a role in the design of international airline services, since travellers experience contrasts between Finnish and Korean culture. While the airline exhibits Finnish cultural elements, the targeted passengers have different mindsets and behaviours. The research findings suggest three potential themes: Nordic experience, communication and learning, and accessibility and visibility. Under those themes, the study creates 16 job stories highlighting strategic areas for Korean passengers as customers and 15 job stories for the cabin crew as the ‘enablers’. These strategic areas are prioritised and evaluated by managerial employees in the company through the jobs-to-be-done prioritisation matrix. As the outcome of the project, this study proposes strategic areas for localising passenger experiences in addition to business goals. The conclusion recommends that behavioural studies of various regional markets should be conducted individually because behaviours of passengers from different markets appear to be distinctive. However, the approach to crew training should be scaled and implemented nationally or regionally, depending on the market size. By further investigating the suggested strategic areas, the passenger experience of the target country could be improved, and consequently, more international customers onboarding could be acquired.Son, Jiyoun

DISTRIBUTION OF PCDD/FS, PCBS, AND PCNS IN COASTAL SEDIMENTS COLLECTED FROM MAJOR INDUSTRIAL BAYS IN SOUTH KOREA

Department of Urban and Environmental Engineering (Environmental Science and Engineering)Polychlorinated dibenzo-p-dioxins and furans (PCDD/Fs), polychlorinated biphenyls (PCBs), and polychlorinated naphthalenes (PCNs) are persistent organic pollutants (POPs), and they are unintentionally emitted into the environment from incomplete combustion or thermal processes. Since the 1980s, productions and uses of technical mixture of PCBs and PCNs have been very popular such as transformer, insulators, paints, plasticizers, and capacitors. In particular, marine sediments are considered as the final sink of POPs. Those toxic compounds may enter the marine organisms and be accumulated in the human body through the food chain. So far, various researches on PCDD/Fs and PCBs in the sediments have been carried out in Korea; however, there have been only a few studies on PCNs in the sediments. Therefore, the aims of this study were to investigate the levels, patterns, spatial distributions, and to identify the major sources of PCDD/Fs, PCBs, and PCNs in bays located within or near the industrial areas in South Korea. In this study, the sediment samples were collected in Gwangyang, Jinhae, Busan, and Ulsan bays in March and April 2016. There were 16 sampling sites in the Gwangyang Bay (GY1-16), 20 sites in Jinhae Bay (JH1-20), 18 sites in the Busan Bay (BS1-18), and 15 sites in the Ulsan Bay (US1-15). The target compounds were 17 PCDD/Fs, 18 PCBs (dl-PCBs and indicator PCBs), and 15 PCNs (75 PCNs for 14 sediment samples). The sediment samples were extracted using accelerated solvent extraction system (ASE), and the extracts were purified by multilayer silica gel and alumina columns. PCDD/Fs, PCBs, and PCNs were analyzed using gas chromatography/high resolution mass spectrometry (GC/HRMS). The concentrations of PCDD/Fs, PCBs, PCNs in sediments ranged from 0.18 pg TEQ/g to 19.80 pg TEQ/g. The highest TEQ concentration was observed near the wastewater treatment plant in Jinhae Bay, which seemed to be due to the effluent discharge. The concentrations in this study were comparable or lower than those of other countries, and the levels of PCDD/Fs and PCBs were lower than those of the previous studies in Korea. The correlation analysis between TOC contents and concentrations of PCDD/Fs (R2=0.67, p<0.01), PCBs (R2=0.44, p<0.01), and PCNs (R2=0.45, p<0.01) indicated positive correlations. Generally, the concentrations in the inner part were higher than those in the outer part, which is due to the industrial complexes. Therefore, the concentrations of PCDD/Fs, PCBs, PCNs might be influenced by various industries. The concentrations of PCDD/Fs and PCBs have decreased compared with those obtained from the previous studies in Korea. However, this study has been the first comprehensive study for PCNs with high resolution monitoring in industrial bays. On the basis of this study, it could be possible to understand the spatial distributions and major sources of PCDD/Fs, PCBs, and PCNs in industrial bays.ope

流れ盤斜面の判別と回避を組み込んだGISによる森林路網計画手法の開発

学位の種別:課程博士University of Tokyo(東京大学

Effect of a New Prokinetic Agent DA-9701 Formulated with Corydalis Tuber and Pharbitidis Semen on Cytochrome P450 and UDP-Glucuronosyltransferase Enzyme Activities in Human Liver Microsomes

DA-9701 is a new botanical drug composed of the extracts of Corydalis tuber and Pharbitidis semen, and it is used as an oral therapy for the treatment of functional dyspepsia in Korea. The inhibitory potentials of DA-9701 and its component herbs, Corydalis tuber and Pharbitidis semen, on the activities of seven major human cytochrome P450 (CYP) enzymes and four UDP-glucuronosyltransferase (UGT) enzymes in human liver microsomes were investigated using liquid chromatography-tandem mass spectrometry. DA-9701 and Corydalis tuber extract slightly inhibited UGT1A1-mediated etoposide glucuronidation, with 50% inhibitory concentration (IC50) values of 188 and 290 μg/mL, respectively. DA-9701 inhibited CYP2D6-catalyzed bufuralol 1′-hydroxylation with an inhibition constant (Ki) value of 6.3 μg/mL in a noncompetitive manner. Corydalis tuber extract competitively inhibited CYP2D6-mediated bufuralol 1′-hydroxylation, with a Ki value of 3.7 μg/mL, whereas Pharbitidis semen extract showed no inhibition. The volume in which the dose could be diluted to generate an IC50 equivalent concentration (volume per dose index) value of DA-9701 for inhibition of CYP2D6 activity was 1.16 L/dose, indicating that DA-9701 may not be a potent CYP2D6 inhibitor. Further clinical studies are warranted to evaluate the in vivo extent of the observed in vitro interactions

Temporal Interpolation Is All You Need for Dynamic Neural Radiance Fields

Temporal interpolation often plays a crucial role to learn meaningful representations in dynamic scenes. In this paper, we propose a novel method to train spatiotemporal neural radiance fields of dynamic scenes based on temporal interpolation of feature vectors. Two feature interpolation methods are suggested depending on underlying representations, neural networks or grids. In the neural representation, we extract features from space-time inputs via multiple neural network modules and interpolate them based on time frames. The proposed multi-level feature interpolation network effectively captures features of both short-term and long-term time ranges. In the grid representation, space-time features are learned via four-dimensional hash grids, which remarkably reduces training time. The grid representation shows more than 100 times faster training speed than the previous neural-net-based methods while maintaining the rendering quality. Concatenating static and dynamic features and adding a simple smoothness term further improve the performance of our proposed models. Despite the simplicity of the model architectures, our method achieved state-of-the-art performance both in rendering quality for the neural representation and in training speed for the grid representation.Comment: CVPR 2023. Project page: https://sungheonpark.github.io/tempinterpner

Very short-term forecasting of precipitation based on hybrid surface rainfall technique in Korea

Póster presentado en: 3rd European Nowcasting Conference, celebrada en la sede central de AEMET en Madrid del 24 al 26 de abril de 2019

Chlorin e6 Prevents ADP-Induced Platelet Aggregation by Decreasing PI3K-Akt Phosphorylation and Promoting cAMP Production

A number of reagents that prevent thrombosis have been developed but were found to have serious side effects. Therefore, we sought to identify complementary and alternative medicinal materials that are safe and have long-term efficacy. In the present studies, we have assessed the ability of chlorine e6 (CE6) to inhibit ADP-induced aggregation of rat platelets and elucidated the underlying mechanism. CE6 inhibited platelet aggregation induced by 10 µM ADP in a concentration-dependent manner and decreased intracellular calcium mobilization and granule secretion (i.e., ATP and serotonin release). Western blotting revealed that CE6 strongly inhibited the phosphorylations of PI3K, Akt, c-Jun N-terminal kinase (JNK), and different mitogen-activated protein kinases (MAPKs) including extracellular signal-regulated kinase 1/2 (ERK1/2) as well as p38-MAPK. Our study also demonstrated that CE6 significantly elevated intracellular cAMP levels and decreased thromboxane A2 formation in a concentration-dependent manner. Furthermore, we determined that CE6 initiated the activation of PKA, an effector of cAMP. Taken together, our findings indicate that CE6 may inhibit ADP-induced platelet activation by elevating cAMP levels and suppressing PI3K/Akt activity. Finally, these results suggest that CE6 could be developed as therapeutic agent that helps prevent thrombosis and ischemia