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The nature of the platform: Pipeline business comparison through Transaction Cost lens
Jinsu Park(박진수),Eonsoo Kim(김언수) 한국경영학회 2021 한국경영학회 통합학술발표논문집 Vol.2021 No.8
This study attempts to understand the existence of the platform, inspired by the work of the market failure framework by Williamson (1971, 1975) explaining the emergence of the firms through transactions cost lens. If the platform business is to be considered of its own kind, the proposition is that the framework needs to be revisited for extension to include the kinds for platform business. By utilizing the lens of the Transaction Cost Economics theory, we compare the two types of businesses: the traditional pipeline business to platform business. Building upon Coase(1937) tackling fundamental question of the nature of the firm, highlighting firm’s strategic choice of its governance structure for transaction cost efficiency as well as upon Williamson(1975) formulating ‘market failure framework’ for hierarchical organization’s emergence, we posit that the conceptual framework can be extended to explain the emergence of the platform business by articulating the nature of the platforms in comparison to the traditional pipeline businesses. This study’s scope is limited to ‘digital platform’, and more narrowly so to ‘transaction platform’. We conjecture that there is an ‘organizational failure’ to bring about an alternative form of an organization, the platform business. The comparison highlights that the nature of the platform business is distinct from traditional pipeline business and by this, we conclude that platform business needs apposite approaches in understanding its competition, cooperation as well as internal and externalization.
Park, Jinsu,Baek, Woongki Elsevier 2019 Journal of parallel and distributed computing Vol.127 No.-
<P><B>Abstract</B></P> <P>Hardware transactional memory (HTM) is widely supported by commodity processors. While the effectiveness of HTM has been evaluated based on small-scale multi-core systems, it still remains unexplored to quantify the performance and energy efficiency of HTM for scientific workloads on large-scale NUMA systems, which have been increasingly adopted to high-performance computing. To bridge this gap, this work investigates the performance and energy-efficiency impact of HTM on scientific applications on large-scale NUMA systems. Specifically, we quantify the performance and energy efficiency of HTM for scientific workloads based on the widely-used CLOMP-TM benchmark. We then discuss a set of generic software optimizations, which effectively improve the performance and energy efficiency of transactional scientific workloads on large-scale NUMA systems. Further, we present case studies in which we apply a set of the performance and energy-efficiency optimizations to representative transactional scientific applications and investigate the potential for high-performance and energy-efficient runtime support.</P> <P><B>Highlights</B></P> <P> <UL> <LI> We investigate the performance sensitivity of CLOMP-TM to various TM settings. </LI> <LI> We quantify the impact of HTM on scientific workloads on large-scale NUMA systems. </LI> <LI> We propose a set of generic software optimizations. </LI> <LI> We present a case study to show the effectiveness of the proposed optimizations. </LI> <LI> We present a case study to demonstrate the potential for efficient runtime support. </LI> </UL> </P>
Research for Hot Carrier Degradation in N-Type Bulk FinFETs
Park, Jinsu,Showdhury, Sanchari,Yoon, Geonju,Kim, Jaemin,Kwon, Keewon,Bae, Sangwoo,Kim, Jinseok,Yi, Junsin The Korean Institute of Electrical and Electronic 2020 전기전자재료학회논문지 Vol.33 No.3
In this paper, the effect of hot carrier injection on an n-bulk fin field-effect transistor (FinFET) is analyzed. The hot carrier injection method is applied to determine the performance change after injection in two ways, channel hot electron (CHE) and drain avalanche hot carrier (DAHC), which have the greatest effect at room temperature. The optimum condition for CHE injection is V<sub>G</sub>=V<sub>D</sub>, and the optimal condition for DAHC injection can be indirectly confirmed by measuring the peak value of the substrate current. Deterioration by DAHC injection affects not only hot electrons formed by impact ionization, but also hot holes, which has a greater impact on reliability than CHE. Further, we test the amount of drain voltage that can be withstood, and extracted the lifetime of the device. Under CHE injection conditions, the drain voltage was able to maintain a lifetime of more than 10 years at a maximum of 1.25 V, while DAHC was able to achieve a lifetime exceeding 10 years at a 1.05-V drain voltage, which is 0.2 V lower than that of CHE injection conditions.
Park, Jinsu,Kim, Bae-Jung,Hwang, Ji-Yeong,Yoon, Yo-Woong,Cho, Hoon-Sang,Kim, Dong-Hyun,Lee, Jong Kook,Yoon, Seog-Young American Scientific Publishers 2018 Journal of Nanoscience and Nanotechnology Vol.18 No.2
<P>Osteoconductive, biocompatible, and resorbable organic/inorganic composites are most commonly used in fixation medical devices, such as suture anchors and interference screws, because of their unique physical and chemical properties. Generally, studies on biodegradable composites have focused on their mechanical properties based on the composition and the individual roles of organic and inorganic biomaterials. In this study, we prepared biodegradable organic/inorganic nanocomposite materials using the solvent mixing process and conventional molding. We used polylactic acid (PLA) as the matrix and nano-sized hydroxyapatite (nano-HAp) as the osteoconductive filler. The content of nano-HAp was varied in 0-30 wt% and its influence on the in-vitro mechanical performance of PLA/HAp nanocomposites was evaluated. The in-vitro mechanical properties of nanocomposites were evaluated using standardized tensile and flexural tests after different immersion times in simulated body fluid.</P>
Structure and nuclear transport mechanism of HSP70 nuclear transporter, Hikeshi
Jinsue Song,Hyerim Hong,Jong Il Ko,Eun-Joo Park,Sang Mi Park,Se-Young Son,Soo Jae Lee 한국구조생물학회 2015 Biodesign Vol.3 No.3
Translocation of macromolecules across the nuclear membrane under the normal conditions has been well studied, but the mechanism of nuclear translocation under the heat-shock stress conditions remain elusive. Hikeshi is a nuclear transport receptor required for cell survival after heat-shock stress. It is in charge of heat shock-induced nuclear import of 70-kilodalton heat shock proteins (HSP70s) through interactions with FG repeats in nuclear pore complexes. Hikeshi forms an “asymmetric” homodimer that is a characteristic feature. Asymmetry of Hikeshi arises from the distinct conformation of the C-terminal domain and the flexibility of the linker regions which areas are essential for nuclear import of HSP70. A unique extended-loop (E-loop) in the N-terminal domain controls the interactions of Hikeshi with FG-Nups by opening or closing the F97 binding site. The recently reported X-ray structure of Hikeshi explains how Hikeshi participates in the nuclear import regulation through FG-Nups recognition, and which part of Hikeshi affects its binding to HSP70. In this review, we will discuss the structural insight on the highly unique import receptor Hikeshi in heat-shock stress condition.
O-GlcNAcylation and necroptosis in Alzheimer’s disease
Jinsu Park,Dong-Gyu Jo 한국당과학회 2021 한국당과학회 학술대회 Vol.2021 No.07
O-GlcNAcylation (O-linked β-N-acetylglucosaminylation) is notably decreased in Alzheimer’s disease (AD) brain. Necroptosis is activated in AD brain and is positively correlated with neuroinflammation and tau pathology. However, the links among altered O-GlcNAcylation, β-amyloid (Aβ) accumulation, and necroptosis are unclear. Here, we found that O-GlcNAcylation plays a protective role in AD by inhibiting necroptosis. Necroptosis was increased in AD patients and AD mouse model compared with controls; however, decreased necroptosis due to O-GlcNAcylation of RIPK3 (receptor-interacting serine/threonine protein kinase 3) was observed in 5xFAD mice with insufficient O-linked β-N-acetylglucosaminase. O-GlcNAcylation of RIPK3 suppresses phosphorylation of RIPK3 and its interaction with RIPK1. Moreover, increased O-GlcNAcylation ameliorated AD pathology, including Aβ burden, neuronal loss, neuroinflammation, and damaged mitochondria and recovered the M2 phenotype and phagocytic activity of microglia. Thus, our data establish the influence of O-GlcNAcylation on Aβ accumulation and neurodegeneration, suggesting O-GlcNAcylation–based treatments as potential interventions for AD.
Park Jinsu,Kim Naeun (Lauren) 한국마케팅과학회 2024 Journal of Global Fashion Marketing Vol.15 No.1
The aim of this study was to examine the role of “avatar” in the metaverse, specifically, by exploring how appearance similarity with an avatar affects virtual product purchase intention, which is mediated by self-congruence and flow. Further, this study also attempted to find how human behavior in the virtual world could affect behavior in the real world. An online survey was administered to a total of 164 users of a popular South Korean metaverse platform ZEPETO. The findings indicated that the appearance similarity with the avatar influenced virtual product purchase intention, and this relationship was fully mediated by avatar-self congruence and flow. This study also found that virtual product purchase intention could influence real product purchase intention. Based on these findings, it is suggested high-quality avatar customization is critical for users, and retail brands can utilize metaverse as a new marketing tool and as a testbed for new products.
Jinsu Park,Hye-Young Kim 글로벌지식마케팅경영학회 2023 Global Marketing Conference Vol.2023 No.07
Metaverse is a virtual world where users can engage in various activities, and its market is expected to grow rapidly in the coming years (Hwang, 2021). Generation Z, also known as digital natives, are heavily involved in social media and often share selfies, making them more sensitive to body image concerns (Ameen, 2022). In the metaverse, users can create customized avatars, allowing them to experience an ideal body image. This study applies the “extraordinary self” theory to avatar creation, a concept that explains how people create an ideal, fantastic, or transcendent self by consuming experiences that set them apart from their mundane real self (Procter, 2021). Based on the theory, this study examines how dissatisfaction with body image of Generation Z can lead to the creation of avatars that manifest an ideal body image, which in turn, can influence self-congruence with the avatar and self-esteem in the metaverse. This study also looks into the possible effects of enhanced self-esteem on user’s intention to purchase virtual products and their loyalty to a specific metaverse platform. Therefore, the following hypotheses are developed.