• 산경연구논집
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• 제13권11호
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• pp.31-38
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• 2022

Purpose: Strategic management research and findings are usually not focused on dealing with concrete instruments for measuring individual competencies. The presence of traditional human resources management instruments, which include the aspects of job analysis, selection training, and even development, has been used frequently for many years in organizations. This study aims to investigate the relationship between employee reading habits and their innovativeness. Research design, data and methodology: The research methodology applied in this case is qualitative research methods. It is a method that involves the collection of data from non-numerical formats. The technique helped in understanding the relationship that exists between the reading habits of the employees and the competencies of innovation. Results: The present researchers figured out the meaningful connection between the independent variable (Reading Habit and dependent variable (Innovative Competency), explaining 'The Reason Why Employees Should Read More Books' and 'How Organizations Promote the Reading Habits of Employees'. Conclusions: It is clear that with reading habits among employees, innovation is easily achieved since these employees know their goals, how to achieve these objectives and overcome any challenge that might hinder innovation. Organizational management should work towards fostering positive reading cultures among employees in organizations.

• 대한한방내과학회지
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• 제43권5호
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• pp.874-880
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• 2022

Objectives: This study reports a case of COVID-19 in which the patient experienced improved clinical symptoms (fever, cough, anosmia, sore throat, pantalgia, and headache) after treatment with Korean medicine. Methods: A 47-year-old male patient diagnosed with COVID-19 was treated with herbal medicine (Mahwangbalpyotang-gagam) three times a day. His clinical course was assessed using changes in body temperature, the Numerical Rating Scale of clinical symptoms, and chest X-ray comparisons between pre-COVID-19 and post-COVID-19 conditions. Results: All the patient's clinical symptoms subsided in 11 days. After 15 days of treatment, his body temperature dropped to a normal range, and the quarantine was lifted. A chest X-ray showed there was no active lung lesion in either lung field after COVID-19. Conclusion: This study suggests that herbal medicine treatment may be an effective treatment for relieving COVID-19's clinical symptoms.

• 한방안이비인후피부과학회지
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• 제35권3호
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• pp.114-122
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• 2022

Objective : The purpose of this study is to report the effect of Korean medicine treatments of abducens nerve palsy after cancer immunotherapy. Methods : A 63-year-old male patient who was suffering hepatocellular carcinoma had left eye abduction restriction, diplopia, and decreased visual acuity after taking 5^th cancer immunotherapy(atezolizumab + bevacizumab). Western medicine was administered for 3 weeks, but there was no response. The patient was treated with herbal medicine, acupuncture, electroacupuncture, moxibustion and bee venom pharmacoacupuncture for 4 weeks. Result : The patient's eye abduction restriction and diplopia were resolved. Visual acuity was improved from NRS(Numerical Rating Scale) 8 to NRS 2. The patient continued immunotherapy and there was no worsening of symptoms. No adverse events were observed. Conclusions : This study shows that Korean medicine treatments were effective on abducens nerve palsy after cancer immunotherapy.

• Smart Structures and Systems
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• 제31권2호
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• pp.141-154
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• 2023

After an earthquake, information regarding potential damage to buildings close to the epicenter is very important during the initial emergency response. This study proposes the use of crowdsourced measured acceleration response data collected from smartphones located within buildings to perform system identification of building structures during earthquake excitations, and the feasibility of the proposed approach is studied. The principal advantage of using crowdsourced smartphone data is the potential to determine the condition of millions of buildings without incurring hardware, installation, and long-term maintenance costs. This study's goal is to assess the feasibility of identifying the lowest fundamental natural frequencies of buildings without knowing the orientations and precise locations of the crowds' smartphones in advance. Both input-output and output-only identification methods are used to identify the lowest fundamental natural frequencies of numerical finite element models of a real building structure. The effects of time synchronization and the orientation alignment between nearby smartphones on the identification results are discussed, and the proposed approach's performance is verified using large-scale shake table tests of a scaled steel building. The presented results illustrate the potential of using crowdsourced smartphone data with the proposed approach to identify the lowest fundamental natural frequencies of building structures, information that should be valuable in making emergency response decisions.

• 센서학회지
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• 제32권1호
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• pp.39-43
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• 2023

Microscale thermophysical property measurements of liquids have been developed considering the increasing interest in the thermal management of cooling systems and energy storage/transportation systems. To accurately predict the heat transfer performance, information on the thermal conductivity, heat capacity, and density is required. However, a simultaneous analysis of the thermophysical properties of small-volume liquids has rarely been considered. Recently, we proposed a new methodology to simultaneously analyze the aforementioned three intrinsic properties using heater-integrated fluidic resonators (HFRs) in an atmospheric pressure environment comprising a microchannel, resistive heater/thermometer, and mechanical resonator. Typically, the thermal conductivity and volumetric heat capacity are measured based on a temperature response resulting from heating using a resistive thermometer, and the specific heat capacity can be obtained from the volumetric heat capacity by using a resonance densitometer. In this study, we analyze methods to improve the thermophysical property measurement performance using HFRs, focusing on the effect of the ambience around the sensor. The analytical method is validated using a numerical analysis, whose results agree well with preliminary experimental results. In a vacuum environment, the thermal conductivity measurement performance is enhanced, except for the thermal conductivity range of most gases, and the sensitivity of the specific heat capacity measurement is enhanced owing to an increase in the time constant.

• Structural Engineering and Mechanics
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• 제84권5호
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• pp.699-706
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• 2022

Settlement control techniques are critical for the safety of shield tunnel constructions, especially for facing complex situations. In this study, the shield tunnel structure from Huaita east road station to Heping Road station in Xuzhou metro No.3 line (China) is taken as engineering background, which has various complex problems of the upper-soft and lower-hard composite stratum conditions, twin curve shield tunnels, and underpass the foundation of the piled raft. The deformation characteristics of shield tunnelling passing through buildings are explored. Subsequently, comprehensive research methods of numerical simulation and field measurement are adopted to analyzing the effectiveness of settlement control by using the top grouting technique. The results show that the settlement of the buildings has obvious spatial characteristics, and the hysteresis effect can be obviously observed in soil deformation caused by shield construction. Meanwhile, the two shield constructions can cause repeated disturbances, reducing the soil deformation's hysteresis effect. Moreover, the shield tunnel's differential settlement is too large when a single line passes through, and the shield construction of the outer curve can cause more significant disturbance in the tunnel than the inside curve. Notably, the proposed process control parameters and secondary topgrouting method can effectively control the deformation of the shield tunnel, especially for the long-term deformation.

• 대한한방내과학회지
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• 제44권1호
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• pp.53-65
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• 2023

Objective: The purpose of this study is to report two cases of breast cancer patients whose side effects after Tamoxifen were treated with traditional Korean medicine. Methods: Two breast cancer patients underwent Tamoxifen after breast-conserving surgery, and both were treated with traditional Korean medicine. Subjective discomfort symptoms were evaluated using the Numerical Rating Scale. Adverse events were assessed using the National Cancer Institute Common Terminology Criteria for Adverse Events, Version 5.0. Results: After treatment with traditional Korean medicine, the discomfort symptoms that occurred after Tamoxifen, such as osteoarthritis, hot flushes, and cold sweat, all gradually improved. In addition, no hematologic, hepatic, or renal side effects were observed from the traditional Korean medicine treatment. Conclusion: This case study suggests that traditional Korean medicine may contribute to the improvement of side effects caused by Tamoxifen and enhance the quality of life of patients.

• Structural Engineering and Mechanics
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• 제85권1호
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• pp.119-133
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• 2023

Impact event is the key factor influencing the operational state of the mechanical equipment. Additionally, nonlinear factors existing in the complex mechanical equipment which are currently attracting more and more attention. Therefore, this paper proposes a novel hybrid-separate identification strategy to solve the force identification problem of the nonlinear structure under impact excitation. The 'hybrid' means that the identification strategy contains both l1-norm (sparse) and l2-norm regularization methods. The 'separate' means that the nonlinear response part only generated by nonlinear force needs to be separated from measured response. First, the state-of-the-art two-step iterative shrinkage/thresholding (TwIST) algorithm and sparse representation with the cubic B-spline function are developed to solve established normalized sparse regularization model to identify the accurate impact force and accurate peak value of the nonlinear force. Then, the identified impact force is substituted into the nonlinear response separation equation to obtain the nonlinear response part. Finally, a reduced transfer equation is established and solved by the classical Tikhonove regularization method to obtain the wave profile (variation trend) of the nonlinear force. Numerical and experimental identification results demonstrate that the novel hybrid-separate strategy can accurately and efficiently obtain the nonlinear force and impact force for the nonlinear structure.

• International Journal of Computer Science & Network Security
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• 제22권12호
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• pp.212-216
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• 2022

Space based constellation network is a kind of ad hoc network in which users are self-organized without center node. In space based constellation network, users are allowed to enter or leave the network at any given time. Thus, the number of active users is an unknown and time-varying parameter, and the performance of the network depends on how accurately this parameter is estimated. The so-called problem of active user identification, which consists of determining the number and identities of users transmitting in space based constellation network is discussed and a novel active user identification method is proposed in this paper. Active user identification code generated by transmitter address code and receiver address code is used to spread spectrum. Subspace-based method is used to process received signal and judgment model is established to identify active users according to the processing results. The proposed method is simulated under AWGN channel, Rician channel and Rayleigh channel respectively. Numerical results indicate that the proposed method obtains at least 1.16dB E_b/N₀ gains compared with reference methods when miss alarm rate reaches 10^-3.

• 국제초고층학회논문집
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• 제11권4호
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• pp.315-320
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• 2022

With the rapid development of urbanization the problems of pedestrian-level wind comfort and natural ventilation of tall buildings are becoming increasingly prominent. The velocity at the pedestrian level ($\overline{MVR}$) and variation of wind pressure coefficients $\overline{{\Delta}C_p}$ between windward and leeward surfaces of tall buildings were investigated systematically through numerical simulations. The examined parameters included building density ρ, height ratio of building α_H, width ratio of building α_B, and wind direction θ. The linear and quadratic regression analyses of $\overline{MVR}$ and $\overline{{\Delta}C_p}$ were conducted. The quadratic regression had better performance in predicting $\overline{MVR}$ and $\overline{{\Delta}C_p}$ than the linear regression. $\overline{MVR}$ and $\overline{{\Delta}C_p}$ were optimized by the NSGA-II algorithm. The LINMAP and TOPSIS decision-making methods demonstrated better capability than the Shannon's entropy approach. The final optimal design parameters of buildings were ρ = 20%, α_H = 4.5, and α_B = 1, and the wind direction was θ = 10°. The proposed method could be used for the optimization of pedestrian-level wind comfort and natural ventilation in a residential area.