The effects of Mo doping on 0.3Li[Li_0.33Mn_0.67]O₂·0.7Li[Ni_0.5Co_0.2Mn_0.3]O₂ cathode material

Park, Jin-Hwan,Lim, Jinsub,Yoon, Jaegu,Park, Kyu-Sung,Gim, Jihyeon,Song, Jinju,Park, Hyosun,Im, Dongmin,Park, Minsik,Ahn, Docheon,Paik, Younkee,Kim, Jaekook The Royal Society of Chemistry 2012 Dalton Transactions Vol.41 No.10

<P>Mo doped Li excess transition metal oxides formulated as 0.3Li[Li<SUB>0.33</SUB>Mn<SUB>0.67</SUB>]O<SUB>2</SUB>·0.7Li[Ni<SUB>0.5-<I>x</I></SUB>Co<SUB>0.2</SUB>Mn<SUB>0.3-<I>x</I></SUB>Mo<SUB>2<I>x</I></SUB>]O<SUB>2</SUB> were synthesized using the co-precipitation process. The effects of the substitution of Ni and Mn with Mo were investigated for the density of the states, the structure, cycling stability, rate performance and thermal stability by tools such as first principle calculations, synchrotron X-ray diffraction, field-emission SEM, solid state <SUP>7</SUP>Li MAS nuclear magnetic resonance (NMR), X-ray photoelectron spectroscopy (XPS), elemental mapping by scanning TEM (STEM), inductively coupled plasma atomic emission spectrometry (ICP-AES) and a differential scanning calorimeter (DSC). It was confirmed that high valence Mo<SUP>6+</SUP> doping of the Li-excess manganese-nickel-cobalt layered oxide in the transition metal enhanced the structural stability and electrochemical performance. This increase was due to strong Mo–O hybridization inducing weak Ni–O hybridization, which may reduce O<SUB>2</SUB> evolution, and metallic behavior resulting in a diminishing cell resistance.</P> <P>Graphic Abstract</P><P>Mo doped Li excess transition metal oxides formulated as 0.3Li[Li<SUB>0.33</SUB>Mn<SUB>0.67</SUB>]O<SUB>2</SUB>·0.7Li[Ni<SUB>0.5-x</SUB>Co<SUB>0.2</SUB>Mn<SUB>0.3-x</SUB>Mo<SUB>2x</SUB>]O<SUB>2</SUB> were synthesized using the co-precipitation process. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c2dt11833e'> </P>

Computational approaches for prediction of protein-protein interaction between Foot-and-mouth disease virus and Sus scrofa based on RNA-Seq

Park, Tamina,Kang, Myung-gyun,Nah, Jinju,Ryoo, Soyoon,Wee, Sunghwan,Baek, Seung-hwa,Ku, Bokkyung,Oh, Yeonsu,Cho, Ho-seong,Park, Daeui The Korean Society of Veterinary Service 2019 韓國家畜衛生學會誌 Vol.42 No.2

Foot-and-Mouth Disease (FMD) is a highly contagious trans-boundary viral disease caused by FMD virus, which causes huge economic losses. FMDV infects cloven hoofed (two-toed) mammals such as cattle, sheep, goats, pigs and various wildlife species. To control the FMDV, it is necessary to understand the life cycle and the pathogenesis of FMDV in host. Especially, the protein-protein interaction between FMDV and host will help to understand the survival cycle of viruses in host cell and establish new therapeutic strategies. However, the computational approach for protein-protein interaction between FMDV and pig hosts have not been applied to studies of the onset mechanism of FMDV. In the present work, we have performed the prediction of the pig's proteins which interact with FMDV based on RNA-Seq data, protein sequence, and structure information. After identifying the virus-host interaction, we looked for meaningful pathways and anticipated changes in the host caused by infection with FMDV. A total of 78 proteins of pig were predicted as interacting with FMDV. The 156 interactions include 94 interactions predicted by sequence-based method and the 62 interactions predicted by structure-based method using domain information. The protein interaction network contained integrin as well as STYK1, VTCN1, IDO1, CDH3, SLA-DQB1, FER, and FGFR2 which were related to the up-regulation of inflammation and the down-regulation of cell adhesion and host defense systems such as macrophage and leukocytes. These results provide clues to the knowledge and mechanism of how FMDV affects the host cell.

Influences of Tobacco-Related Knowledge on Awareness and Behavior towards Smoking

Park, Jinju,Lim, Min Kyung,Yun, E Hwa,Oh, Jin-Kyoung,Jeong, Bo Yoon,Cheon, Yejin,Lim, Sujin The Korean Academy of Medical Sciences 2018 JOURNAL OF KOREAN MEDICAL SCIENCE Vol.33 No.47

<P><B>Background</B></P><P>A considerable amount of research has shown that knowledge and appropriate awareness are essential for encouraging positive behaviors and promoting health. In Korea, the roles that behavioral changes play in the prevention of cancer have been an important issue since the introduction of the 10 codes for cancer prevention in 2006. Thus, the present study investigated the associations of tobacco-related knowledge with awareness and attitudes towards positive smoking-cessation behaviors.</P><P><B>Methods</B></P><P>The present study analyzed data from the 2010 national questionnaire survey (n = 1,006). This study evaluated sociodemographic characteristics, smoking status, self-rated health status, health-related interests, and the accuracy of 12 tobacco-related statements to determine knowledge level and to investigate its impact on awareness and behaviors related to smoking. These parameters were examined and staged using the Precaution Adoption Process Model.</P><P><B>Results</B></P><P>A higher level of tobacco-related knowledge was significantly associated with a positive attitude towards smoking cessation (5–8 correct answers: odds ratio [OR], 2.53; 95% confidence interval [CI], 1.57–4.08; ≥ 9 correct answers: OR, 3.90; 95% CI, 2.22–6.82; reference: ≤ 4 correct answers). Interestingly, among current smokers, only those who correctly responded to ≥ 9 of 12 tobacco-related statements were significantly associated with a positive attitude towards smoking cessation.</P><P><B>Conclusion</B></P><P>This study found that having a higher level of tobacco-related knowledge had a significant impact on positive attitudes towards smoking cessation. This suggests that there is a need to disseminate appropriate knowledge to the general population to encourage positive attitudes and promote healthful behaviors in terms of smoking.</P>

푸드테크와 농식품 정보: 데이터 생산자의 관점에서

박진주(Jinju Park) 한국식품영양과학회 2023 식품산업과 영양 Vol.28 No.2

Change in Phenolic Compound Components and Antioxidant Activities of Tea Leaf Pickles During Storage

Boram Park,Jinju Park,In-Guk Hwang,Malshick Shin,Seon Mi Yoo 한국식품영양과학회 2013 한국식품영양과학회 학술대회발표집 Vol.2013 No.11

Pyro-synthesis of Na₂FeP₂O₇ Nano-plates as Cathode for Sodium-ion Batteries with Long Cycle Stability

Song, Jinju,Yang, Juhyun,Alfaruqi, Muhammad Hilmy,Park, Wangeun,Park, Sohyun,Kim, Sungjin,Jo, Jeonggeun,Kim, Jaekook The Korean Ceramic Society 2016 한국세라믹학회지 Vol.53 No.4

Carbon-coated sodium iron pyrophosphate ($Na_2FeP_2O_7$) was prepared by a simple and low-cost pyro-synthesis route for further use as the cathode for Na-ion batteries. The X-ray diffraction (XRD) pattern of the sample annealed at $650^{\circ}C$ confirmed the pure triclinic phase of $Na_2FeP_2O_7$. Electron microscopy studies revealed a cross linked plate shape morphology of the $Na_2FeP_2O_7$ sample. When tested for application in Na-ion battery, the $Na_2FeP_2O_7$ cathode showed two redox pairs in the potential window of 2.0-4.0 V. The cathode registered initial discharge and charge capacities of 80.85 and 90 mAh/g, respectively, with good cycling performance.

공유 오피스의 비즈니스 모델 진화 연구 : 패스트파이브 사례를 중심으로

박진주(Jinju Park),김준익(Junic Kim) 피터드러커 소사이어티 2021 창조와 혁신 Vol.14 No.4

코로나 19로 인해 근무환경이 유연화되면서, 공유 오피스의 수요가 폭발적으로 늘어나기 시작하였다. 공유 오피스란 하나의 공간에 여러 입주사(멤버사)에게 사무공간을 재임대하는 시스템으로, 최근에 빠르게 주목받고 있는 공유경제 비즈니스 모델임에도 불구하고, 위워크 기업의 사례에서도 볼 수 있듯이 기존 공유 오피스모델은 성장성과 별개로 한정된 수익모델과 지속성에 대한 많은 질문이 제기되고 있다. 이에 본 연구에서는 공유 오피스들이 지속 가능한 경쟁우위 확보를 위해 어떻게 성장해야 하는지 알아보고자 하였다. 이를 위해 설립 이후 매년 수익성을 향상시키며 배수 이상으로 매출이 성장한 국내 공유 오피스 브랜드 기업인 패스트파이브의 비즈니스 모델 연구를 수행하였다. 특히, 기존 공유 오피스 수익모델의 구조적 한계에서 변화하여 지속 가능한 경쟁우위 확보를 어떻게 진행해야 하는지에 관한 연구를 비즈니스 모델 관점에서 접근하고자 하였다. 이에 선행연구 및 문헌 고찰을 통하여 공유 오피스의 개념과 특성을 파악하고, 연구자가 직접 해당 기업에 참여하여 최근 패스트파이브가 보이는 플랫폼 모델로 진화하는 데 필요한 성공 요소들과 전략이 무엇인지 분석하고자 하였다. 조사와 연구의 유효성을 높이기 위해 본 연구의 사례기업인 패스트파이브 공유 오피스에 연구자가 직접 입주사(멤버사) 측면으로 참여하여 진행하였고, 해당 기업 임직원들과 인터뷰를 순차적으로 진행하였다. 연구 결과, 사례기업의 플랫폼 비즈니스로의 가치사슬 확장이 수요 유치 범위의 확대에 연관성이 있음을 확인하였다. 특히 양면 시장으로 성장하여 공급사(제휴업체)와 입주사(멤버사)의 상호작용으로 기존 공간을 공유하는 서비스의 영역을 넘어서는 가치공동창출 모델이 되었고 또한, 그룹 내에 증가한 사용자로 인해 교차네트워크 효과까지 진화되는 것도 확인되었다. 본 연구에서는 크게 3가지의 연구 결과를 도출할 수 있었다. 우선, 공유 오피스 모델이 지속적으로 성장하고 수익모델을 구축하기 위해선 플랫폼 모델로의 진화를 통한 생태계구축이 필요하다. 또한, 플랫폼으로 진화된 공유 오피스는 참여자들 간의 가치공동창출을 통해 부가 가치를 새롭게 창출하고 있음을 확인하였다. 마지막으로 교차네트워크를 통해 하나의 온라인(Online)과 오프라인(Offline)을 결합하는 O2O(Online to Offline) 플랫폼 형태의 생태계를 구축하는 것을 확인할 수 있었다. 본 연구는 공유 오피스의 영향 확대로 인해 기존 공유 오피스 구조를 양측 플랫폼 관계로 변화시킬 가능성이 있음을 시사한다. As the work environment became more flexible due to the COVID-19 pandemic, the demand for co-working spaces began to increase exponentially. In this study, therefore, we decided to conduct a model study of FASTFIVE a domestic co-working space startup that has tripled its sales for four consecutive years by meeting the break-even every year since its establishment. The focus of the study is on the changes to their business model to gain a more sustainable competitive advantage in the structural limitations of the existing co-working space revenue model. Therefore, through prior research and literature review, the concept and characteristics of co-working space were investigated, and an analysis was made of the success factors and strategies needed to evolve into the current platform model of FASTFIVE. To increase the effectiveness of the research, we directly collaborated with FASTFIVE and also conducted interviews with the company executives. As a result, the business value chain of the case company was identified and confirmed that it was related to the expansion of the scope of demand. It has grown into a two-sided market and has become a value co-creation model that goes beyond the boundary of existing services through interaction between suppliers (service providers) and tenants (member companies). Also, it is suggested that the cross-network effect has evolved due to the increased number of users within the group. Through this, three main conclusions could be drawn from this research. First of all, it was maturing/advancing into a platform beyond simply re-renting an office. In addition, it was confirmed that the co-working space was adding value co-creation among participants. Finally, it was possible to establish an ecosystem in the form of an O2O (Online to Offline) platform that combines the online and offline aspects through a cross-network. This study suggests that there is a possibility of changing the existing co-working space structure into a bilateral platform relationship due to the expansion of the influence of co-working spaces.

뉴스 기사 감성분석을 통한 네트워크 기반 공급망 위험도 스코어링 알고리즘

박진주(Jinju Park),윤태환(Taehwan yun),박강희(Kanghee Park),신현정(Hyunjung Shin) 한국정보과학회 2023 한국정보과학회 학술발표논문집 Vol.2023 No.12

1kW급 연료전지-배터리 복합 전원 시스템의 운용 알고리즘 구현

박진주(Jinju Park),채수용(Suyong Chae),송유진(Yujin Song),한수빈(Soobin Han) 전력전자학회 2013 전력전자학술대회 논문집 Vol.2013 No.11

대학생의 행복과 그릿의 관계

박진주 ( Jinju Park ),김은정 ( Eunjung Kim ),이슬이 ( Seulyi Lee ) 사단법인 아시아문화학술원 2020 인문사회 21 Vol.11 No.6

본 연구의 목적은 대학생들의 그릿 수준에 따른 행복도의 차이를 분석하고 행복도에 그릿의 어떤 하위 변인이 영향을 주는지 알아보는 데 있다. 이를 위해 부산의 P대학 재학생을 대상으로 설문을 실시한 결과 총 3,006명의 응답이 분석에 사용되었다. 기술통계를 통해 행복도와 그릿 수준을 파악하고, 일원변량분석을 통해 그릿 수준에 따른 행복도의 차이를 알아보았다. 그리고 단계선택 중다회귀분석을 통해 행복도에 그릿의 어떤 하위요인이 영향을 미치는지 살펴보았다. 그릿 수준에 따라 행복도 수준을 비교한 결과 두 수준은 비례하는 것을 알 수 있었으며, 이는 통계적으로 유의미한 차이가 있었다. 회귀분석 결과 그릿이 행복에 미치는 영향력은 34.5%로 설명되며 행복의 하위요인 중 몰입요인에 가장 큰 영향을 끼치는 것을 확인하였다. 본 연구는 그릿과 행복 간의 관계를 실증적으로 분석한 기초연구로 대학생의 만족스러운 대학생활과 사회생활을 위한 기초자료가 될 수 있을 것이라 기대한다. 향후 연구에서 실질적으로 대학생의 그릿을 훈련시킬 수 있는 실행연구가 이루어진다면 보다 의미 있는 연구가 될 수 있을 것이다. The purpose of this study is to examine the level of happiness and grit of university students and to analyze if there is a difference in happiness depending on the level of grit and which grit affects happiness. A survey was conducted, that targeted 3,006 university students of a national university in Busan, Korea. Using one-way ANOVA, the difference in happiness level was recognized. Next, a multiple regression analysis was conducted to identify which grit affects happiness. Studies have shown that the higher the level of grit, the higher the level of happiness, and grit had a positive effect on happiness. This study empirically analyzes the positive relationship between grit and happiness, suggesting implications for the grit education of university students and will be the basis for a satisfactory university and social life. This study is meaningful in that it presented basic data for the satisfactory college life and social life of university students as a basic study that empirically analyzed the relationship between grit and happiness. It could also be a more meaningful study if a future study could be conducted to train a university student’s grit.