• Title/Summary/Keyword: Co-working

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Development of job satisfaction scale for dental hygienist (치과위생사의 직무만족에 관한 측정도구 개발)

  • Park, Ji-Hyeon;Lim, Soon-Ryun
    • Journal of Korean society of Dental Hygiene
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    • v.20 no.6
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    • pp.913-924
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    • 2020
  • Objectives: This study was conducted to develop a dental hygienist's job satisfaction scale and to evaluate its validity and reliability. Methods: A total of 34 preliminary questions were composed based on the components commonly defined in previous studies and in-depth interviews. Results: The results of the study were practice activity, professional satisfaction, income, working conditions, patient relations, and co-worker relations using the exploratory factor analysis. Goodness of fit of the model assessed using confirmatory factor analysis generally met the criteria. On verification of the internal consistency, the Cronbach's alpha for the factors were as follows: 0.821 for practice activity, 0.822 for professional satisfaction, 0.847 for income, 0.765 for working condition, 0.743 for patient relations, and 0.747 for co-worker relations, which implied that the measurement tool was reliable. Through exploratory and confirmatory factor analyses, a total of 24 items for six factors: six items for practice activity factors, four items for professional satisfaction, three items for income, four items for working conditions, three items for patient relationships, and three items for coworker relations. Conclusions: Based on the aforementioned results, the validity and reliability of the dental hygienist's job satisfaction measurement tool were satisfactory. Thus, it may be used for assessing the job satisfaction of the dental hygienists in future.

A study of an efficient CoA structure for a Network Mobility of the Railroad Environment. (철도환경에서 네트워크 이동성을 위한 효율적인 CoA(Care of Address) 구성 방안 연구)

  • Lee Il-Ho;Lee Jun-Ho
    • Proceedings of the KSR Conference
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    • 2005.05a
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    • pp.750-756
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    • 2005
  • The network service have been achieved recently in the vehicle train, bus etc. Network portability have been processed so that it is active around NEMO WG (Network Mobility Working Group)of IETF. We organize NEMO in the railroad environment of the route among the masses traffic mean which has the forecasting. We try to present necessary for a portability network protocol to produce CoA rather efficiently.

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Study on development of Smart ventilation system using a adsorbent for the removal of CO2 (CO2 제거용 흡착제를 이용한 스마트 환기시스템 개발 연구)

  • Shin, Jae-Ran;Moon, Sung-Ho;Kim, Jae-Kang;Choi, Jin-Sik;Lim, Yun-Hui;Park, Byung-Hyun;Lee, Ju-Yeol
    • Journal of the Korean Applied Science and Technology
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    • v.32 no.3
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    • pp.578-582
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    • 2015
  • In this study, We evaluated the efficiency of the smart ventilation system being developed at the test-bed(KCL). Smart ventilation system improve the indoor air quality by absorbing carbon dioxide. It is reducing the infusion of outside air can be reduced to minimum energy consumption. To evaluate the energy savings and carbon dioxide removal efficiency. It was more effective when working with air conditioning and ventilation system at the same time.

A Study of Effect W·Co Content of Electrode in EDM (W·Co의 함유량이 방전가공에 미치는 영향에 관한 연구)

  • Kim, Yong-Myong;Kim, Hee-Nam
    • Design & Manufacturing
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    • v.2 no.5
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    • pp.39-42
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    • 2008
  • The Paper discussed the effects of working electric current and pulse when using super hardend alloy drill as corona electrode. The discharge effect can be obtained very precisely in the ranges of 1A - 2A in working current. $12{\mu}s-14{\mu}s$ in dis charge pulse on time width and $8{\mu}s-10{\mu}s$ in discharge pulse off time.

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A Study on the Job Satisfaction of Cooks of School Feeding (학교급식 조리사의 직무 만족에 관한 연구)

  • Lee, Suk-Hee;Yoo, Kyung-Min
    • Culinary science and hospitality research
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    • v.12 no.1 s.28
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    • pp.22-36
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    • 2006
  • This study examines the job satisfaction of cooks of school feeding. Sampling was taken among school feeding cooks except for those of Kangwon Province and Cheju Province. The factors affecting on the job satisfaction was investigated to find ways to raise the job satisfaction of cooks of school feeding. Four factors were extracted in all. It is found that these four factors have affected the job satisfaction of cooks of school feeding in order of working satisfaction factor(.493), co-worker communication factor(.463), job environment factor(.185), and advancement factor(.146). Accordingly, more opportunities for career advancement should be offered to raise the job satisfaction among them, and the establishment of better work environment and the optimum staff are urgently needed.

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Fluid Heating System using High-Frequency Inverter Based on Electromagnetic Indirect Induction Heating

  • Kim Yong-Ju;Shin Dae Cheul;Kim Kee Hwan;Uchihori Y.;Kawamura Y.
    • Proceedings of the KIPE Conference
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    • 2001.10a
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    • pp.69-74
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    • 2001
  • In this Paper are described the indirect induction heated boiler and induction heated hot air producer using the voltage-fed series resonant high-frequency inverter which can operate in the frequency range from 20kHz to 50kHz. A specially designed induction heater, which is composed of laminated stainless assembly with many tiny holes and interconnected spot welding points between stainless plates, is inserted into the ceramic type vessel with external working coil. This working coil is connected to the inverter and turbulence fluid through this induction heater to moving fluid generates in the vessel. The operating performances of this unique appliance in next generation and its effectiveness are evaluated and discussed from a practical point of view.

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ORC System Performance Analysis upon R-245fa and Novec 649 (R-245fa 및 NOVEC 649 작동유체에 따른 ORC 시스템 성능 변화)

  • Chang, Hong-Soon;Han, Young-Sub;Song, Yeong-Kil;Kim, Sung-Hyun
    • Journal of the Korean Society for Geothermal and Hydrothermal Energy
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    • v.12 no.3
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    • pp.17-23
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    • 2016
  • A test unit for Organic Rankine Cycle (ORC) power generation system was developed and experimentally reviewed the performance of the ORC system. Two different organic fluids (R-245fa & Novec 649) were tested as working fluids for the system. System behavior was measured and analyzed along with the variables, such as temperature, pressure, rpm and shaft power. It is one of the findings that Novec 649 fluid is to be less pressurized than R-245fa in order to up to the heat source (boiler) capacity, that limits the experiment as high as 2 kW in shaft power.

Fabrication and Characterization of NbTi Superconduction wire for MRI (MRI용 NbTi 초전도선재 제조 및 초전도 특성 평가)

  • Ha, D.W.;Oh, S.S.;Ryu, K.S.;Han, I.Y.;Lee, C.K.
    • Proceedings of the KIEE Conference
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    • 1997.07d
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    • pp.1494-1496
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    • 1997
  • The MRI Magnet is a most practical application of NbTi superconductor. In this paper, we present the main research results on superconducting wires for MRI magnet which we have developed. Cu/NbTi superconducting wires were fabricated by repeat of cold working and heat-treating process after that billets were extruded. We investigated the relation of superconductivities of wires and heat treatment condition. The correlation between cross section shape of wires and work inhomogeneity of NbTi rods was investigated by microscopic observation. The more repeatation number of cold working and heat-treating process, the higher critical current is achieved.

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A Proposed Scheme for Channel and Timeslot Co-Scheduling Data Aggregation in MWSNs: An Algorithm Design (MWSN에서 채널 및 타임 슬롯 공동 스케줄링 데이터 집계를 위한 제안 계획 : 알고리즘 설계)

  • Vo, Vi Van;Kim, Moonseong;Choo, Hyunseung
    • Proceedings of the Korea Information Processing Society Conference
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    • 2020.05a
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    • pp.44-46
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    • 2020
  • Aggregating data with an optimal delay, which is a critical problem in Wireless Sensor Networks applications, is proven as NP-hard. In this paper, we focus on optimizing the aggregation delay by presenting an idea for channel and timeslot co-scheduling data aggregation in MWSNs. The proposed scheme, which names Break and Join, maximizes the number of sensor nodes to be scheduled in a working period, so that the overall number of working periods and data collection delay are reduced.

On Recent Industry Activities for 3GPP Long Term Evolution (LTE) toward the Next Generation Mobile Communication Markets (차기 이동통신 시장을 향한 3GPP LTE 업계의 최근동향)

  • Kim, Min-Goo
    • Proceedings of the IEEK Conference
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    • 2008.06a
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    • pp.5-6
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    • 2008
  • With the continued evolution of third-generation cellular systems and the introduction of 3GP P LTE, there is considerable progress for the new mobile wireless markets. Recently, 3GPP LTE standards are accelerated by mobile operators supporting LTE deployment and special working groups such as LSTI are working for LTE IOT and trials. In this paper, we introduce the current status of LTE activities in the mobile communications industry.

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