Disentangling The Effects Of The Employee Benefits On Employee Productivity

This study aimed to investigate the effects of employee benefits on employee productivity. There are conflicting views, positive and negative, with regard to the effect of employee benefits on employee productivity. Overall, we found that employee benefits have a positive impact on employee productivity through the embodied effect (direct effect). Specifically, according to a workplace panel survey in Korea conducted between 2005 and 2009, an increase of one unit in employee benefits leads to an increase of employee productivity by about 7.9%. In addition, we found that such effect is stronger in the manufacturing industry than in the non-manufacturing industry. Although there is no difference in the effect of benefits between large firms and small and medium-sized firms, the labor-embodied effect is stronger in large firms, and the capital-embodied effect is salient in small and medium-sized firms

PREFACE

PREFAC

CONFERENCE PROGRAM

Fluidization XIII: New Paradigm in Fluidization Engineering May 16-21, 2010 Hotel Hyundai, Gyeong-ju, Kore

Direct exfoliation of graphite using a non-ionic polymer surfactant for fabrication of transparent and conductive graphene films

A high-yielding dispersion of graphene at high concentration in solvent is critical for practical applications. Herein, we demonstrate the formation of a stable dispersion of pristine graphene in ethanol by exfoliating graphite flakes into individual graphene layers using a non-ionic polymer surfactant under bath-type sonication. Oligothiophene-terminated poly(ethylene glycol) was synthesized and used as a non-ionic and amphiphilic surfactant for exfoliating graphite into graphene. A high-quality graphene film was fabricated from the exfoliated graphene solution by the vacuum filtration method. TEM and SEM reveal that the size of exfoliated graphene flakes is larger than 1 mu m. When the graphene film was treated with nitric acid and thionyl chloride after washing with solvent, the film showed high performance with a sheet resistance of 0.3 k Omega sq(-1) and a transparency of 74% at 550 nm.OAIID:oai:osos.snu.ac.kr:snu2013-01/102/0000001236/1SEQ:1PERF_CD:SNU2013-01EVAL_ITEM_CD:102USER_ID:0000001236ADJUST_YN:YEMP_ID:A004558DEPT_CD:445FILENAME:1. Direct exfoliation of graphite using a non-ionic polymer.pdfDEPT_NM:재료공학부EMAIL:[email protected]_YN:NCONFIRM:

Lupus Myocarditis Presenting as Acute Congestive Heart Failure: A Case Report

A young woman who had a delivery history 3 months previously presented with dyspnea and orthopnea. Initial findings of physical examination, chest radiography, and echocardiogram showed typical congestive heart failure with severe left ventricular (LV) dysfunction. At first, we considered peripartum cardiomyopathy because she had given birth to a baby 3 months previously. However, even though we massively tried conventional drug therapy for 10 days, the patient still remained with refractory heart failure. We performed additional laboratory studies such as complement level and autoantibodies, of which the results supported systemic lupus erythematosus. We could make the diagnosis of acute lupus myocarditis and treated her with corticosteroid. The symptoms were dramatically disappeared and LV function also improved

Observation of whispering gallery modes in InGaN/GaN multi-quantum well microdisks with Ag plasmonic nanoparticles on Si pedestals

In this study, plasmonic freestanding InGaN/GaN multi-quantum well (MQW) microdisks were fabricated on Si (111) pedestals using wet chemical undercut etching, followed by decorating of Ag nanoparticles on microdisks to improve whispering gallery mode (WGM) resonance emission. The enhancement resulted from the plasmonic coupling effect between excitons in MQWs and localized surface plasmons of Ag. The radial resonance of WGMs from optically pumped microdisk cavities were observed in the photoluminescence spectra at a threshold optical pumping power density of 4.7 kW/cm2 with a WGM mode spacing of Δλ = 1.3 nm

SRAO CO Observation of 11 Supernova Remnants in l = 70 to 190 deg

We present the results of 12CO J = 1-0 line observations of eleven Galactic supernova remnants (SNRs) obtained using the Seoul Radio Astronomy Observatory (SRAO) 6-m radio telescope. The observation was made as a part of the SRAO CO survey of SNRs between l = 70 and 190 deg, which is intended to identify SNRs interacting with molecular clouds. The mapping areas for the individual SNRs are determined to cover their full extent in the radio continuum. We used halfbeam grid spacing (60") for 9 SNRs and full-beam grid spacing (120") for the rest. We detected CO emission towards most of the remnants. In six SNRs, molecular clouds showed a good spatial relation with their radio morphology, although no direct evidence for the interaction was detected. Two SNRs are particularly interesting: G85.4+0.7, where there is a filamentary molecular cloud along the radio shell, and 3C434.1, where a large molecular cloud appears to block the western half of the remnant. We briefly summarize the results obtained for individual SNRs.Comment: Accepted for publication in Astrophysics & Space Science. 12 pages, 12 figures, and 3 table