The need for an intelligent information-based ship accident prevention and control system for various marine accidents is very clearly emerging. As it is a variety of marine accidents, the causes are diverse. Therefore, it can be said that it is very important to prevent these marine accidents and their causes in advance. Therefore, a study was conducted on an intelligent information-based ship safety management decision support system that provides information necessary for decision-making at sea and land through an integrated management device for ships that informs safety-related risks in real-time ship operation. In the future, we intend to pursue the development of a system that can aim for safer and more economical ship operation by linking it to navigation instruments through the evaluation and analysis of AI, IoT, and big data.

Background: Technological developments have led to the creation of a mechanical device capable of providing a representative massage as a passive treatment. The use of mechanical massage offers the distinct advantage of being user-friendly and available for use at any given time. Objectives: To investigated present the outcomes of utilizing a massage bed on the range of motion (ROM) and pressure pain threshold (PPT) in patients diagnosed with chronic low back pain. Design: ABA design of a single case study. Methods: To measure the ROM of the subject's trunk flexion, extension, lateral flexion, and rotation, a tape measure and goniometer were utilized. Furthermore, PPT was measured using an electronic pressure pain meter. Baseline A and Baseline A’ periods were conducted for 5 consecutive days without intervention. Following the baseline periods, a massage bed intervention was administered for 1 hour daily for a total of 10 days during the Intervention B period. Daily assessments were performed, and the Intervention B period was conducted after the intervention. Results: The ROM effect was confirmed in trunk lateral flexion and rotation, while the PPT was effective in both L1, right L2, left L4, and left L5. Conclusion: The results of this study confirmed that the use of a massage bed improved the ROM and PPT in patients suffering from chronic back pain. Further randomized controlled trials involving a larger sample size are necessary to validate these findings.

Background: Smart devices including smart phones have many benefits. However, prolonged used may aggravate cervical pain and postural deformity. Smart devices with appropriate applications (apps) may be useful cost-effective and easy-to-use instruments to relieve cervical pain and improve range of motion (ROM). Objectives: To review recent experimental studies on smart device-based apps on cervical pain and postural ROM improvement. Design: Systemic review study. Methods: Ten articles were selected through bibliographic searches and successive and exclusion procedure of the PubMed, ScienceDirect, and Google Scholar. Out of initial 1,046 articles, 98 articles were selected from abstract review. 33 articles were selected for full article review. Final 10 research articles were selected. Results: Three static ROM feasibility, two active ROM feasibility, four self-management promotion, and one pre/post research study articles were included. Smart device with artificial intelligent (AI) based app were utilized promote adherence to physical activity. Conclusion: Smart device apps steadily showed high feasibility even for research purpose. Studies on AL and machine learning apps showed mixed results for need for wider and precision application.

For practical applications of graphene sheets in a variety of fields, mass production of high-quality graphene sheets is necessary. Herein, we reported a cost-effective, green, and simple approach to synthesizing mass production exfoliated graphene (EG) flakes employing electrochemical exfoliation of pencil graphite in neutral aqueous electrolytes. Pencil graphite cores of different grades were applied as anode and cathode electrodes and exposed to the electrolyte solution at a different voltage. Several parameters were examined and optimized, including pencil grade (2,4,6,8 B), applied voltage (10, 15, 20, 30 V), different inorganic electrolytes ((NH4)2SO4, Na2SO4, NaNO3, NaCl, and CH3COONa), and the concentration of electrolytes. The optimal condition was chosen by considering the mass of produced graphene and the conductivity of the graphene solution. The optimal conditions were as follow: pencil grade: 6B; applied voltage: 10 V; electrolyte type: Na2SO4; electrolyte concentration: 0.1 M. Under these conditions, the production yield was > 95% within 3 h and 9 min. The EG was characterized by utilizing FT-IR, XRD, Raman spectroscopy, FE-SEM, Cyclic Voltammetry, and Electrochemical Impedance Spectroscopy (EIS). Characterization indicates that the synthesized EG had an XRD peak at 2θ = 26.6° and an ID/ IG ratio of 0.36. Furthermore, the EG showed good conductivity when tested by cyclic voltammetry and EIS whereas the R2 values were 985.8 and 76.3 Ω for bare GCE and EG/GCE, respectively. In addition, EG effectively removed cadmium (Cd(II)) with an adsorption level of 8.72 mg/g. The results from this study suggest that EG can be scaled up and commercialized in an environmentally friendly and low-cost manner, especially in low-income countries, and using it to rectify metal ions.

The physicochemical properties of the emulsions prepared with four different proteins (pea protein isolate, whey protein isolate, soy protein concentrate, and soy protein isolate) were characterized in terms of particle size, rheological property, and freeze-thaw stability, while the feasibility of the protein-stabilized emulsions as a fat replacer was evaluated. Confocal laser scanning microscopic analysis showed that O/W emulsions were successfully prepared with all the proteins; however, the smallest particle size and excellent syneresis were observed in the WPI-stabilized emulsions. The use of WPI-stabilized emulsions as an alternative for shortening up to 50% level did not lead to differences in the muffin batters’ specific gravity and viscoelastic properties. After baking, the substitution of shortening with the WPI emulsions at up to 50% by weight did not significantly affect the muffins’ specific volume and texture characteristics.

이 연구는 평시는 물론 전시에도 국방 분야에 계약직 민간근로자를 운 용함으로써 민간인력의 전문성을 활용하고 국방업무의 연속성을 높이는 방안을 제시한다. 미래 동원환경은 인구절벽에 따른 평시 병역자원과 전 시 동원예비군이 감소할 것으로 전망된다. 따라서 국방에서의 민간인력 확대가 불가피해 보인다. 전‧평시 민간인력 활용의 연속성이 국방혁신의 핵심이 될 수 있다. 그러나 현재의 국방민간인력 운용체계는 평시와 전 시가 전혀 다르다. 전시는 기술인력동원에 의해 이들을 대체하기 때문이 다. 그러나 전시에 동원된 기술인력들이 적절한 역할 수행을 하기까지는 시행착오와 지체로 인해 국방운영의 불연속성이 우려된다. 이것은 전시 작전지속지원과 작전의 성공을 어렵게 하는 요인이 될 것이다. 이에 대 안으로 평시 민간근로자의 계약관계를 전시 동원과 연계하는 방안이 필 요하다. 이를 위해 전시 기술인력 범위에 평시 활용 중인 민간인력‧업체 를 포함하는 방안이 있다. 제도를 개선하여 기술인력 동원지정‧관리에 대 한 군의 요구를 반영하는 것이다. 또는 가칭 ｢전‧평시 민간인력 활용에 관한 시행령｣을 제정하여 전‧평시 임무 위주로 민간인력 활용체계를 새 롭게 정립하는 것이다. 이 방안들은 예산에 입각한 새로운 국방인력구조 를 설계하고 운영의 연속성과 함께 효율성, 투명성을 높이게 될 것이다.