精神分析에서의 꿈

Leon L Altman 대한신경정신의학회 1988 신경정신의학 Vol.27 No.5

False Reassurance Based on Non-Significant Results

Douglas G. Altman 대한소화기내시경학회 2017 Clinical Endoscopy Vol.50 No.6

Letters to the Editor

정치평론 : 우루과이: 기억하지 않는 정치제도?

다비드알트만 ( David Altman ),임수진(역) 한국정치평론학회 2010 정치와 평론 Vol.7 No.-

레이저가 조사된 아세틸렌에서의 임계전이를 거쳐서 형성된 쉘 형상 카본 나노입자에 관한 연구

최만수(Mansoo Choi),Igor S.Altman(Igor S. Altman),김영정(Young-Jeong Kim),Peter V.Pikhitsa(Peter V. Pikhitsa),이상훈(Sanghoon Lee) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.11

Shell shaped hollow carbon nanoparticles are synthesized in the oxygen-hydrogen diffusion flame with C₂H₂ as precursor when it is irradiated with CO₂ laser of certain power. Below this power of laser, we couldn’t get any other but amorphous soot. This shell shaped hollow carbon nanoparticles shows outer wall of high degree of crystallinity with void space inside of itself. And size distribution of these nanoparticles is measured with TEM image analysis. Also the structural comparison between this carbon nanoparticle and soot is done by Raman and XRD measurement. These results show this carbon nanoparticles are of grapheme structure, which means it has good crystallinity when compared with soot.

Design of thermophoretic probe for precise particle sampling

Lee, Jeonghoon,Altman, Igor,Choi, Mansoo Elsevier 2008 Journal of aerosol science Vol.39 No.5

<P><B>Abstract</B></P><P>We proposed a design methodology for improved thermophoretic probes that can sample particles with high spatial resolution. A bending vibration analysis for the instantaneous motion of a probe has been done together with direct observation of the probe motion and flow disturbance for systematic study of the effect of different designs on particle sampling. Direct observation of the motion of thermophoretic sampling probes revealed that the probe with a low stiffness would result in inaccurate particle sampling. Based on these, the thermophoretic sampling probe was modified to minimize probe vibration and flow disturbance and this modified design was confirmed to sample particles with higher spatial resolution than the original one by examining transmission electron microscope (TEM) images of particles collected in a flame.</P>

Extending TextAE for annotation of non-contiguous entities

Lever, Jake,Altman, Russ,Kim, Jin-Dong Korea Genome Organization 2020 Genomics & informatics Vol.18 No.2

Named entity recognition tools are used to identify mentions of biomedical entities in free text and are essential components of high-quality information retrieval and extraction systems. Without good entity recognition, methods will mislabel searched text and will miss important information or identify spurious text that will frustrate users. Most tools do not capture non-contiguous entities which are separate spans of text that together refer to an entity, e.g., the entity "type 1 diabetes" in the phrase "type 1 and type 2 diabetes." This type is commonly found in biomedical texts, especially in lists, where multiple biomedical entities are named in shortened form to avoid repeating words. Most text annotation systems, that enable users to view and edit entity annotations, do not support non-contiguous entities. Therefore, experts cannot even visualize non-contiguous entities, let alone annotate them to build valuable datasets for machine learning methods. To combat this problem and as part of the BLAH6 hackathon, we extended the TextAE platform to allow visualization and annotation of non-contiguous entities. This enables users to add new subspans to existing entities by selecting additional text. We integrate this new functionality with TextAE's existing editing functionality to allow easy changes to entity annotation and editing of relation annotations involving non-contiguous entities, with importing and exporting to the PubAnnotation format. Finally, we roughly quantify the problem across the entire accessible biomedical literature to highlight that there are a substantial number of non-contiguous entities that appear in lists that would be missed by most text mining systems.

Phonon conduction in GaN-diamond composite substrates

Cho, Jungwan,Francis, Daniel,Altman, David H.,Asheghi, Mehdi,Goodson, Kenneth E. American Institute of Physics 2017 JOURNAL OF APPLIED PHYSICS - Vol.121 No.5

Well-being among Arab teachers in Israel during the COVID-19 pandemic: a mixed-methods study

Levkovich Inbar,Shinan-Altman Shiri 한국다문화교육학회 2024 Multicultural Education Review Vol.16 No.1

Studies on minority-majority relations traditionally focus on the hegemonic group’s influence on everyday experiences. In this investigation, we focused on how Arab teachers in Israel were affected by the COVID-19 pandemic by examining their wellbeing during that period. The study used a mixed-methods design comprising a cross-sectional survey (N = 299) and in-depth interviews (N = 24) among Arab teachers during the third lockdown in Israel. The quantitative results indicated that giving teachers more support at work boosted their emotional well-being. In the regression model, the following significant factors explained 20% of the variance in perceived emotional well-being: female gender, teaching seniority, digital literacy, job support, and resilience. The qualitative findings showed the importance of extended family, particularly during the pandemic. In addition, all participants reported that their religious faith helped them cope during the crisis. The research findings point to the unique need for resources to promote well-being among Arab teachers working under stress.

Inhibition of Herpes Simplex Viruses, Types 1 and 2, by Ginsenoside 20(S)-Rg3

Stephen M. Wright,Elliot Altman 한국미생물·생명공학회 2020 Journal of microbiology and biotechnology Vol.30 No.1

Infections by herpes simplex viruses have an immense impact on humans, ranging from selflimiting, benign illness to serious, life-threatening diseases. While nucleoside analog drugs are available, resistance has been increasing and currently no vaccine exists. Ginsenosides derived from Panax ginseng have been documented to inhibit several viruses and bolster immune defenses. This study evaluated 12 of the most relevant ginsenosides from P. ginseng for toxicities and inhibition of herpes simplex viruses types 1 and 2 in Vero cells. The effects of test compounds and virus infection were determined using a PrestoBlue cell viability assay. Time course studies were also conducted to better understand at what points the virus life cycle was affected. Non-toxic concentrations of the ginsenosides were determined and ranged from 12.5 μM to greater than 100 μM. Ginsenoside 20(S)-Rg3 demonstrated the greatest inhibitory effect and was active against both HSV-1 and HSV-2 with an IC50 of approximately 35 μM. The most dramatic inhibition—over 100% compared to controls—occurred when the virus was exposed to 20(S)-Rg3 for 4 h prior to being added to cells. 20(S)-Rg3 holds promise as a potential chemotherapeutic agent against herpes simplex viruses and, when used together with valacyclovir, may prevent increased resistance to drugs.

Tree growth and competition in a post‐logging <i>Quercus mongolica</i> forest on Mt. Sobaek, South Korea

Dolezal, Jiri,Song, Jong‐,Suk,Altman, Jan,Janecek, Stepan,Cerny, Tomas,Srutek, Miroslav,Kolbek, Jiri Springer Japan 2009 Ecological research Vol.24 No.2

<P><B>Abstract</B></P><P>Secondary woodlands in South Korea cover most mountains from low to middle elevations. While general patterns of forest succession are well understood, little is known about mechanisms of stand recovery after disturbance. We examined the spatio‐temporal variations in establishment, growth, size inequality, and mode of competition among trees in a 50‐year‐old post‐logging <I>Quercus mongolica</I>‐dominated stand. We further compared the growth and stem allometry of single trees, presumably of seed origin, with multi‐stemmed trees resprouting from stumps. <I>Q. mongolica</I> formed the upper canopy 16–22 m tall, 88.3% of total stand basal area, and 36.2% of total stem density, with most trees established during the first post‐logging decade (51.2% were resprouts). During the first three decades, the <I>Q. mongolica</I> recruits grew exponentially, and disproportionately more in diameter than few older reserved trees left after the last cutting. This substantially decreased size inequality. The reverse trend was observed from 1994 to 2004: larger trees grow more, indicating an increasing asymmetry of competition for light. Neighborhood analysis revealed that when target trees had more or larger neighbors, their exponential phase of growth was reduced and maximum size was decreased. After the 50 years of stand development, more than 70% of <I>Q. mongolica</I> showed growth decline as a result of competitive stress, and mortality was about 30%, concentrated in smaller size classes. Compared to single stems, resprouts within clones do not seem to compete less asymmetric as might be expected based on studies of clonal herbaceous plants and physiological integration within genets. As <I>Q. mongolica</I> was also negatively affected by competition from woody species currently prevailing in the lower tree stratum (<I>Tilia amurensis, Acer mono, Fraxinus rhynchophylla, Acer pseudosieboldianum</I>), we predict the stand will become increasingly dominated by these more shade‐tolerant trees.</P>