This paper examines a simple one-step and catalyst-free method for synthesizing carbon nanoparticles from aliphatic alcohols and n-hexane with linear molecule formations by using a stable solution plasma process with a bipolar pulse and an external resistor. When the external resistor is adopted, it is observed that the current spikes are dramatically decreased, which induced production of a more stable discharge. Six aliphatic linear alcohols (methanol- hexanol) containing carbon with oxygen sources are studied as possible precursors for the massive production of carbon nanoparticles. Additional study is also carried out with the use of n-hexane containing many carbons without an oxygen source in order to enhance the formation of carbon nanoparticles and to eliminate unwanted oxygen effects. The obtained carbon nanoparticles are characterized with field emission-scanning electron microscopy, energy dispersive X-ray spectroscopy, and Raman spectroscopy. The results show that with increasing carbon ratios in alcohol content, the synthesis rate of carbon nanoparticles is increased, whereas the size of the carbon nanoparticles is decreased. Moreover, the degree of graphitization of the carbon nanoparticles synthesized from 1-hexanol and n-hexane with a high carbon (C)/oxygen (O) ratio and low or no oxygen is observed to be greater than that of the carbon nanoparticles synthesized from the corresponding materials with a low C/O ratio.

The purpose of this study is to establish how community garden spaces should be used to restore communities engaged in village-rehabilitation projects. To achieve this purpose, we have analyzed the perceptions of local residents conducting a town-development project. The community reviewed the benefits of having a garden to improve the residents’ quality of life and comfort. Given the role of gardens in revitalizing communities, it is necessary to build spaces where residents can relax and enjoy community life. Those who participated in this study hoped that their community garden would provide shade and relaxation, a children’s play area, green spaces, and places for conversation. The space and facilities provided by community gardens vary, in accordance with the expectations and needs of each community. It is therefore inappropriate to apply uniform garden designs to all community gardens. Between 20% and 25% of a community garden should be allocated to each of the following: community space, ornamental space, and space for relaxation. As plants that provide shade and help to maintain the ecosystem are strongly preferred in community gardens, all plants should be chosen for their environmental benefits and functionality, rather than aesthetics. Residents may be willing to participate in a range of activities, including community events, the cultivation of plants, and garden management. Towns must therefore set up programs to support these activities. It is essential to continue studying and investigating the formation of community spaces and facilities, reflecting the characteristics of each community.

A novel, unique, and effective method for carbon nanotube (CNT) dispersion by the free arc stimulation is proposed. CNTs are introduced as an aerogel into the air space via the dispersion method and can be utilized as a solution by adding it to solvents. The volume of the original generated CNT aerogel with a high-volume expansion ratio displays a performance two orders of magnitudes better than that of raw CNTs, which is considered a powerful characterization of the dispersion effect. The CNT aerogel, which was observed by scanning electron microscopy also showed a satisfactory dispersion morphology. Its structure and properties were tested before and after dispersion by Raman spectroscopy and great consistency was observed, which proved that the CNTs were undamaged. This approach may greatly promote the large-scale application of CNTs.

The present study explores two relationships: first, between number of payment and payment option preference, and second, total sum and payment option preference, with pain of payment as a mediator variable. The analyses revealed that consumers who feel higher pain of payment preferred the pennies-a-day pricing to the aggregate pricing when the per-payment price is low. Consumers who experience higher pain of payment prefer to pay in small frequent installments because they feel the small per-payment price can be comparable to daily expense. Consumers who experienced higher pain of payment preferred aggregate pricing to pennies-a-day pricing when the per-payment price was high. When the per-payment price is high, it is no longer comparable to daily expense, thus leading to greater pain of payment among consumers. The study discusses the implications for mechanism of pain of payment on payment option preference.

Two dimensional(2D) crystals, composed of a single layer or a few atomic layers extracted from layered materials are attracting researchers’ interest due to promising applications in the nanoelectromechanical systems. Worldwide researchers are preparing devices with suspended 2D materials to study their physical and electrical properties. However, during the fabrication process of 2D flakes on a target substrate, contamination occurs, which makes the measurement data less reliable. We propose a dry transfer method using poly-methyl methacrylate(PMMA) for the 2D flakes to transfer onto the targeted substrate. The PMMA is then removed from the device by an N-Methyl-2-pyrrolidone solution and a critical point dryer, which makes the suspended 2D flakes residue free. Our method provides a clean, reliable and controllable way of fabricating micrometer-sized suspended 2D nanosheets.

Performance-based seismic evaluation is usually done by considering simplified models for the liquid storage tanks therefore, it is important to validate those simplified models before conducting such evaluation. The purpose of this study is to compare the seismic response results of the FSI (fluid-structure interaction) model and the simplified models for the cylindrical liquid storage tanks and to verify the applicability of the simplified models for estimating failure probability. Seismic analyses were carried out for two types of storage tanks with different aspect ratios (H/D) of 0.45 and 0.86. FSI model represents detailed 3D fluid-structure interaction model and simplified models are modeled as cantilever mass-spring model, frame type mass-spring model and shell type mass-spring model, considering impulsive and convective components. Seismic analyses were performed with modal analysis followed by time history analysis. Analysis results from all the models were verified by comparing with the results calculated by the code and literature. The results from simplified models show good agreement with the ones from detailed FSI model and calculated results from code and literature, confirming that all three types of simplified models are very valid for conducting failure probability analysis of the cylindrical liquid storage tanks.

The 19th century’s international law distinguished civilized from non-civilized States resulting in any country desiring equal treatment was required to obtain recognition from those already deemed civilized. Japan was able to join the civilized world by presenting a civilized image of itself in the First Sino-Japanese War, which was depicted by Western legal scholars as a clash between barbarism and civilization. Neither Japanese nor Western scholars of international law, however, have touched on the issue of the Triple Intervention. This incident serves as a case study for re-evaluating the operation of Western countries’ international legal standards. The argument is, that these countries cloak their motives in legal language for self-aggrandizement, thereby demonstrating the ahistorical nature of the West’s rhetoric of civilization. Further, this incident taught Japan the lesson that international law is concerned not with morality but with power.

1996년 12월 산업안전보건법에서 처음으로 “명예산업안전감독관”제도를 도입 시행하였다. 이 제도는「산업안전보건법」제61조의2에 따라 산업재해 예방 및 산업안전을 위해 개별 사업장 단위로 감독관을 위촉하는 제도이며, 개별 사업장 단위별로 근로자의 생명과 재산을 보호하고 쾌적한 작업환경에서 작업할 권리 및 유해・위험요소로부터 보호 받을 권리 등에 대한 활동이 무엇보다 중요하다는 점에서 출발하였다고 볼 수 있다. 또한 정부의 감독적 기능하에서 수동적인 자세의 안전보건관리 활동보다 자신의 문제를 스스로 해결하는 능동적인 자세로의 전환이 요구된다는 점 등에서 그 필요성이 더욱 높아지고 있다. 이러한 산업재해예방활동이 정부와 사업주의 의지나 노력만으로는 한계가 있다고 판단이 되어 근로자들의 적극적인 참여를 유도하기 위하여 도입된 것이다. 각 사업장 내의 근로자 중에서 명예산업안전감독관을 위촉하여 위험요소 발견시 신속히 사업주나 노동관서에 신고하게 함으로써 위험요인을 사전에 제거하고, 노·사·정 합동으로 산업재해를 예방하고자 시행하였다. 그러나 이 제도가 도입된지 23년이 지났지만 이 제도가 큰 실효성을 거두지 못한 채 현재에 이르게 되었다. 실제 명예산업안전감독관 제도는 노·사간 자율안전관리를 추구하지만 요식적인 행위로 끝나고 있는 것이 현실이다. 본 연구에서는 이러한 형식적・요식적인 행위를 개선하기 위한 명예산업안전감독관 제도적 강화 필요성을 정책적·법적으로 연구하여 제도상의 문제점을 도출하고 개선방안을 모색하고자 한다.

In this study, Tröger’s Base (TB) chemistry is exploited to introduce tunable microporosity in commercially available polyimide membranes. Considering that TB is a rigid, V-shaped and bridged alicyclic amine, there have been notable reports on accessing feasibility in TB for gas separation membrane applications. However, this presentation shows a different but much viable preparation approach in comparison to the already reported ones. This approach only requires commercially available monomers with two preparation steps, thus it can accommodate scalable and practical productions. Five different kinds of homopolymers and six copolymers were explored to demonstrate structure-property-performance relationships and to evaluate practical applicability towards industrial level.