K-drama in the Time of the Pandemic: The Production of Hope through the Subgenre of the K-Dystopia

Michael Kho Lim,이동준 연세대학교 영어영문학과 BK21 Plus 사업단 2023 Situations: Cultural Studies in the Asian Context Vol.16 No.2

During the last quarter of 2021, as the world was preparing to exit the COVID-19 pandemic, Netflix released three original dystopian K-drama series: Squid Game (September), Hellbound (November), and The Silent Sea (December). Through textual analysis of these three series, this paper delves into the ways in which the pandemic served to create a sense of hopelessness and helplessness, a social mood which served as a backdrop for the K-dystopia subgenre to thrive. Paradoxically, perhaps, these dystopian narratives found creative ways to re-package and re- present the concept of hope. In this way, the new genre both built on and veered away from the previous success of K-dramas that presented hope through the element of romance. The dystopian trend might also be considered a Netflix counterprogramming strategy. Finally, the paper explores how realism is incorporated into these dystopian storylines, reflecting the gloomy side of Korean society. Here, realism involves the theme of social injustice, which may be contrasted with the brighter side of Korean culture—typically communicated through the K-pop craze that offers (and sells) fun, glitz, and glamour.

The use of tissue fiducial markers in improving the accuracy of post-prostatectomy radiotherapy

Michael Chao,Huong Ho,Daryl Lim Joon,Yee Chan,Sandra Spencer,Michael Ng,Jason Wasiak,Nathan Lawrentschuk,Kevin McMillan,Shomik Sengupta,Alwin Tan,George Koufogiannis,Margaret Cokelek,Farshad Foroudi,T 대한방사선종양학회 2019 Radiation Oncology Journal Vol.37 No.1

Purpose: The aim of this retrospective study was to investigate the use of a radiopaque tissue fiducial marker (TFM) in the treatment of prostate cancer patients who undergo post-prostatectomy radiotherapy (PPRT). TFM safety, its role and benefit in quantifying the set-up uncertainties in patients undergoing PPRT image-guided radiotherapy were assessed. Materials and Methods: A total of 45 consecutive PPRT patients underwent transperineal implantation of TFM at the level of vesicourethral anastomosis in the retrovesical tissue prior to intensity-modulated radiotherapy. Prostate bed motion was calculated by measuring the position of the TFM relative to the pelvic bony anatomy on daily cone-beam computed tomography. The stability and visibility of the TFM were assessed in the initial 10 patients. Results: No postoperative complications were recorded. A total of 3,500 images were analysed. The calculated prostate bed motion for bony landmark matching relative to TFM were 2.25 mm in the left-right, 5.89 mm in the superior-inferior, and 6.59 mm in the anterior-posterior directions. A significant 36% reduction in the mean volume of rectum receiving 70 Gy (rV70) was achieved for a uniform planning target volume (PTV) margin of 7 mm compared with the Australian and New Zealand Faculty of Radiation Oncology Genito-Urinary Group recommended PTV margin of 10 mm. Conclusion: The use of TFM was safe and can potentially eliminate set-up errors associated with bony landmark matching, thereby allowing for tighter PTV margins and a consequent favourable reduction in dose delivered to the bladder and rectum, with potential improvements in toxicities.

The use of tissue fiducial markers in improving the accuracy of post-prostatectomy radiotherapy

Chao, Michael,Ho, Huong,Joon, Daryl Lim,Chan, Yee,Spencer, Sandra,Ng, Michael,Wasiak, Jason,Lawrentschuk, Nathan,McMillan, Kevin,Sengupta, Shomik,Tan, Alwin,Koufogiannis, George,Cokelek, Margaret,Foro The Korean Society for Radiation Oncology 2019 Radiation Oncology Journal Vol.37 No.1

Purpose: The aim of this retrospective study was to investigate the use of a radiopaque tissue fiducial marker (TFM) in the treatment of prostate cancer patients who undergo post-prostatectomy radiotherapy (PPRT). TFM safety, its role and benefit in quantifying the set-up uncertainties in patients undergoing PPRT image-guided radiotherapy were assessed. Materials and Methods: A total of 45 consecutive PPRT patients underwent transperineal implantation of TFM at the level of vesicourethral anastomosis in the retrovesical tissue prior to intensity-modulated radiotherapy. Prostate bed motion was calculated by measuring the position of the TFM relative to the pelvic bony anatomy on daily cone-beam computed tomography. The stability and visibility of the TFM were assessed in the initial 10 patients. Results: No postoperative complications were recorded. A total of 3,500 images were analysed. The calculated prostate bed motion for bony landmark matching relative to TFM were 2.25 mm in the left-right, 5.89 mm in the superior-inferior, and 6.59 mm in the anterior-posterior directions. A significant 36% reduction in the mean volume of rectum receiving 70 Gy (rV₇₀) was achieved for a uniform planning target volume (PTV) margin of 7 mm compared with the Australian and New Zealand Faculty of Radiation Oncology Genito-Urinary Group recommended PTV margin of 10 mm. Conclusion: The use of TFM was safe and can potentially eliminate set-up errors associated with bony landmark matching, thereby allowing for tighter PTV margins and a consequent favourable reduction in dose delivered to the bladder and rectum, with potential improvements in toxicities.

Identification of Extracellular DNase-producing Bacterial Populations on Catfish Fillets during Refrigerated Storage

Michael E. Hickey,Samuel A. Besong,Venu Kalavacharla,Jung-Lim Lee 한국식품과학회 2013 Food Science and Biotechnology Vol.22 No.1

Food spoilage is a major problem faced by consumers across the globe. As an enzyme that degrades DNA, DNase production on fish tissue seemed likely to aid in fish spoilage. Based on physical characteristics, bacteria producing extracellular DNase were isolated on selective media. 16S rDNA sequences were obtained identifying isolates as bacteria belonging to Aeromonas spp., Serratia spp., Shewanella spp., and Rahnella spp. Aeromonas spp. were the predominant bacteria isolated in this study; this statistically suggests that Aeromonas spp. are dominant in DNase-producing bacterial populations on catfish tissue. Results obtained in this study suggest that extracellular DNase-producing bacteria play a large role in catfish spoilage and support the need for further research on the role of Aeromonas spp. in fish spoilage. Rahnella spp. was isolated from catfish fillets in this study and identified, for the first time, as DNase producing bacteria.

Real-time monocular image-based 6-DoF localization

Lim, Hyon,Sinha, Sudipta N.,Cohen, Michael F.,Uyttendaele, Matt,Kim, H. Jin SAGE Publications 2015 The International journal of robotics research Vol.34 No.4

<P>In this paper we present a new real-time image-based localization method for scenes that have been reconstructed offline using structure from motion. From input video, our method continuously computes six-degree-of-freedom camera pose estimates by efficiently tracking natural features and matching them to 3D points reconstructed by structure from motion. Our main contribution lies in efficiently interleaving a fast keypoint tracker that uses inexpensive binary feature descriptors with a new approach for direct 2D-to-3D matching. Our 2D-to-3D matching scheme avoids the need for online extraction of scale-invariant features. Instead, offline we construct an indexed database containing multiple DAISY descriptors per 3D point extracted at multiple scales. The key to the efficiency of our method is invoking DAISY descriptor extraction and matching sparingly during localization, and in distributing this computation over a temporal window of successive frames. This enables the system to run in real-time and achieve low per-frame latency over long durations. Our algorithm runs at over 30 Hz on a laptop and at 12 Hz on a low-power computer suitable for onboard computation on a mobile robot such as a micro-aerial vehicle. We have evaluated our method using ground truth and present results on several challenging indoor and outdoor sequences.</P>

What Matters in Cybersecurity? The Role of Citizen Perception and Attributes

Michael J. Ahn,Tae-Hyung Park,Chae-Hong Lim 인하대학교 글로벌e거버넌스연구소 2015 International Journal of Policy and Governance Net Vol.3 No.1

This study aims to investigate the extent of citizen cyber threat awareness and the factors that influence behaviors to counter these threats. Using sur-vey data conducted by the South Korean government, on a stratified sam-ple of 6,000 citizens, this study found that the general public was well aware of the presence of various cyber threats. Citizens perceived that these threats have a high likelihood of occurring to them. While this study found a positive relationship between the perception of threats and security actions, most citizens only took a few essential security measures. These findings reveal an online environment where the responsibility of online security falls chiefly on individual citizens. Ultimately, this creates a situa-tion that leaves citizens vulnerable; there is high level of cyber threat awareness, but a low level of preventative actions. This study discusses policy implications related to these findings and citizen perception of the role of government in cybersecurity.

A CONSTRAINT ON THE FORMATION TIMESCALE OF THE YOUNG OPEN CLUSTER NGC 2264: LITHIUM ABUNDANCE OF PRE-MAIN SEQUENCE STARS

Lim, Beomdu,Sung, Hwankyung,Kim, Jinyoung S.,Bessell, Michael S.,Hwang, Narae,Park, Byeong-Gon American Astronomical Society 2016 The Astrophysical journal Vol.831 No.2

<P>The timescale of cluster formation is an essential parameter in order to understand the formation process of star clusters. Pre-main sequence (PMS) stars in nearby young open clusters reveal a large spread in brightness. If the spread were considered to be a result of a real spread in age, the corresponding cluster formation timescale would be about 5-20 Myr. Hence it could be interpreted that star formation in an open cluster is prolonged for up to a few tens of Myr. However, difficulties in reddening correction, observational errors, and systematic uncertainties introduced by imperfect evolutionary models for PMS stars can result in an artificial age spread. Alternatively, we can utilize Li abundance as a relative age indicator of PMS star to determine the cluster formation timescale. The optical spectra of 134 PMS stars in NGC 2264 have been obtained with MMT/Hectochelle. The equivalent widths have been measured for 86 PMS stars with a detectable Li line (3500 < T-eff [K] <= 6500). Li abundance under the condition of local thermodynamic equilibrium (LTE) was derived using the conventional curve of growth method. After correction for non-LTE effects, we find that the initial Li abundance of NGC 2264 is A(Li)= 3.2 +/- 0.2. From the distribution of the Li abundances, the underlying age spread of the visible PMS stars is estimated to be about 3-4 Myr and this, together with the presence of embedded populations in NGC 2264, suggests that the cluster formed on a timescale shorter than 5 Myr.</P>

Risk factors associated with low anterior resection syndrome: a cross-sectional study

Lim See Liang,Wan Zain Wan Zainira,Zahari Zalina,Zakaria Andee Dzulkarnaen,Hashim Mohd Nizam Md,Wong Michael Pak-Kai,Zakaria Zaidi,Ramely Rosnelifaizur,Sidek Ahmad Shanwani Mohamed 대한대장항문학회 2023 Annals of Coloproctolgy Vol.39 No.5

Purpose: Oncological outcomes following rectal cancer surgery have improved significantly over recent decades with lower recurrences and longer overall survival. However, many of the patients experienced low anterior resection syndrome (LARS). This study identified the prevalence and risk factors associated with the development of LARS. Methods: This cross-sectional study involved patients who were diagnosed with rectal cancer and had undergone sphincter-preserving low anterior resection from January 2011 to December 2020. Upon clinic follow-up, patients were asked to complete an interviewed based questionnaire (LARS score) designed to assess bowel dysfunction after rectal cancer surgery. Results: Out of 76 patients, 25 patients (32.9%) had major LARS, 10 patients (13.2%) had minor LARS, and 41 patients (53.9%) had no LARS. The height of tumor from anal verge showed an association with the development of major LARS (P=0.039). Those patients with less than 8 cm tumor from anal verge had an increased risk of LARS by 3 times compared to those with 8 cm and above (adjusted odds ratio, 3.11; 95% confidence interval, 1.06–9.13). Conclusion: Results from our study show that low tumor height was a significant risk factor that has a negative impact on bowel function after surgery. The high prevalence of LARS emphasizes the need for study regarding risk factors and the importance of understanding the pathophysiology of LARS, in order for us to improve patient bowel function and quality of life after rectal cancer surgery.

A Joint Typicality Approach to Compute–Forward

Lim, Sung Hoon,Feng, Chen,Pastore, Adriano,Nazer, Bobak,Gastpar, Michael IEEE 2018 IEEE transactions on information theory Vol.64 No.12

<P>This paper presents a joint typicality framework for encoding and decoding nested linear codes in multi-user networks. This framework provides a new perspective on compute–forward within the context of discrete memoryless networks. In particular, it establishes an achievable rate region for computing a linear combination over a discrete memoryless multiple-access channel (MAC). When specialized to the Gaussian MAC, this rate region recovers and improves upon the lattice-based compute–forward rate region of Nazer and Gastpar, thus providing a unified approach for discrete memoryless and Gaussian networks. Furthermore, our framework provides some valuable insights on establishing the optimal decoding rate region for compute–forward by considering joint decoders, progressing beyond most previous works that consider successive cancellation decoding. Specifically, this paper establishes an achievable rate region for simultaneously decoding two linear combinations of nested linear codewords from <TEX>$K$</TEX> senders.</P>

THE SEJONG OPEN CLUSTER SURVEY (SOS). IV. THE YOUNG OPEN CLUSTERS NGC 1624 AND NGC 1931

Lim, Beomdu,Sung, Hwankyung,Bessell, Michael S.,Kim, Jinyoung S.,Hur, Hyeonoh,Park, Byeong-Gon IOP Publishing 2015 The Astronomical journal Vol.149 No.4