• Journal of Preventive Medicine and Public Health
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• v.56 no.4
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• pp.303-311
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• 2023

Traditional mediation analysis, which relies on linear regression models, has faced criticism due to its limited suitability for cases involving different types of variables and complex covariates, such as interactions. This can result in unclear definitions of direct and indirect effects. As an alternative, causal mediation analysis using the counterfactual framework has been introduced to provide clearer definitions of direct and indirect effects while allowing for more flexible modeling methods. However, the conceptual understanding of this approach based on the counterfactual framework remains challenging for applied researchers. To address this issue, the present article was written to highlight and illustrate the definitions of causal estimands, including controlled direct effect, natural direct effect, and natural indirect effect, based on the key concept of nested counterfactuals. Furthermore, we recommend using 2 R packages, 'medflex' and 'mediation', to perform causal mediation analysis and provide public health examples. The article also offers caveats and guidelines for accurate interpretation of the results.

• 한국HCI학회:학술대회논문집
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• 2009.02a
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• pp.1172-1175
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• 2009

This study aims to develop communication devices and interfaces to address the communication needs of the hearing impaired. Through three FGI (Focused Group Interview)s with deaf persons and sign-language interpreters, we studied the communication methods, devices, and needs of the deaf. On the basis of our analysis, we propose a communication framework to improve their means of communication with normal or other deaf persons. We have designed a communication system that is based on the proposed framework: this system suggests functions for remote sign-language interpretation services for conversations in close-range and over the phone. Details are presented regarding the design of interfaces for video calls, text messages, and digital memos, addressing the conversation patterns of the deaf. The system includes hardware form factors for video phones that facilitate sign language conversations and also mitigate other auditory problems in daily life, such as problems with door bells. The design concept has been verified through a test with six deaf users.

• Bulletin of the Korean Chemical Society
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• v.24 no.8
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• pp.1126-1134
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• 2003

The signals obtained from the $5^{th}$-order (two-dimensional) Raman spectrum of a liquid can depend dramatically on the polarizations of the various light beams, but to date there has been no evidence presented that different polarization conditions probe any fundamentally different aspects of liquid dynamics. In order to explore the molecular significance of polarization we have carried out a molecular dynamics simulation of the $5^{th}$-order spectrum of a dilute solution of CS₂ in liquid Xe, perhaps the simplest system capable of displaying a full range of polarization dependencies. By focusing on the 5 distinct rotational invariants revealed by the different polarizations and by comparing our results with those from liquid Xe, a liquid whose spectrum has no significant polarization dependence, we discovered that the polarization experiments do, in fact, yield valuable microscopic information. With different linear combinations of the experimental response functions one can separate the part of the signal derived from the purely interaction-induced part of the many-body polarizability from the portion with the largest contributions from single-molecule polarizabilities. This division does not directly address the underlying liquid dynamics, but it significantly simplifies the interpretation of the theoretical calculations which do address this issue. We find that the different linear combinations differ as well in whether they exhibit nodal lines. Despite the absence of nodes with the atomic liquid Xe, observing the resilience of our solution's nodes when we artificially remove the anisotropy of our solute leads us to conclude that there is no direct connection between nodes and specifically molecular degrees of freedom.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.65
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• pp.51-70
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• 2015

The Rotterdam Rules are not phrased in favour of FOB seller's legal status. Whether it will be wise under the Rotterdam Rules to trade on the basis of cash against M/R largely depends on the interpretation of various provisions of the Rotterdam Rules. To protect his interests the M/R holder and his assigns must have a right of delivery of the cargo at the port of destination. The M/R holder and his assigns must be entitled to the bill of lading or at least be able to prevent the carrier from issuing the bill of lading to the shipper. Besides, any additional right of instruction on the part of the shipper must be blocked. Article 35 of the Rules entitles only the shipper to the bill of lading while 47 entitles only the holder of the bill of lading to delivery. When no bill of lading has been issued Article 45 grants to the shipper a right of instruction whereby the shipper is allowed to advise the carrier as to the name and the address of the consignee. I have suggested that by lack of a specific provision to the contrary the Rotterdam Rules have to be considered to be embedded in the system of law as a whole. From the Common Law it follows that a M/R holder, as owner of the cargo, can ask for delivery of the cargo. As owner of the cargo a M/R holder can also claim the bill of lading, if he does so in time, because it must be implied in the contract of carriage that the carrier must deliver the bill of lading to the owner of the goods. It is for the same reason that a M/R holder can prevent the carrier from issuing the bill of lading to any third party but the M/R holder and from taking instructions from the shipper as to name and address of a consignee other than the M/R holder.

• Journal of the Korea Society of Computer and Information
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• v.18 no.12
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• pp.91-101
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• 2013

One issue with keyword search in general is its ambiguity which can ultimately impact the effectiveness of the search in terms of the quality of the search results. This ambiguity is primarily due to the ambiguity of the contextual meaning of each term in the query. In addition to the query ambiguity itself, the relationships between the keywords in the search results are crucial for the proper interpretation of the search results by the user and should be clearly presented in the search results. We address the keyword search ambiguity issue by adapting some of the existing approaches for keyword mapping from the query terms to the schema terms/instances. The approaches we have adapted for term mapping capture both the syntactic similarity between the query keywords and the schema terms as well as the semantic similarity of the two and give better mappings and ultimately 50% raised accurate results. Finally, to address the last issue of lacking clear relationships among the terms appearing in the search results, our system has leveraged semantic web technologies in order to enrich the knowledgebase and to discover the relationships between the keywords.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.11 no.4
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• pp.205-213
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• 2016

This study clarified the definition and interpretation of terms relating to SMEs Priority System. First, 'Domestic' is defined that the address of office is in our country. Second, 'Technology utilization capacity' is defined that the de facto capacity to technology commercialization and utilization. for example. development or production or sales activity of the production using national r&d performance. Third, 'priority' in priority consideration is defined that when there are many companies trying sign technology utilization contract, technology providers shoud provide the opportunity of signing contract to SMEs primarily. 'priority consideration' is defined that technology providers shoud try to do enough to sign a contract with SMEs. This study has significance in that raising the application of the current SMEs Priority System.

• Steel and Composite Structures
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• v.27 no.5
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• pp.545-554
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• 2018

This study presents a novel method of improving the strength and stiffness of cold-formed steel (CFS) beams. Flexural members are primary members in most of the structures. Hence, there is an urgent need in the CFS industry to look beyond the conventional CFS beam sections and develop novel techniques to address the severe local buckling problems that exist in CFS flexural members. The primary objective of this study was to develop new CFS composite beam sections with improved structural performance and economy. This paper presents an experimental study conducted on different CFS composite beams with simply supported end conditions under four point loading. Material properties and geometric imperfections of the models were measured. The test strengths of the models are compared with the design strengths predicted by using Australian/New Zealand Standard for cold-formed steel structures. Furthermore, to ensure high precision testing, a special testing rig was also developed for testing of long span beams. The description of test models, testing rig features and test results are presented here. For better interpretation of results, a comparison of the test results with a hot rolled section is also presented. The test results have shown that the proposed CFS composite beams are promising both in terms of better structural performance as well as economy.

• Journal of Korean Academy of Nursing
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• v.48 no.3
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• pp.349-361
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• 2018

Purpose: This ethnography was performed to explore patterns and meanings of healthy life among aged women using senior centers. Methods: The informants were 21 individuals aged 65 years and older at 2 community-based senior centers. Data were collected from iterative fieldwork through in-depth interviews and participant observations and analyzed using text analysis and taxonomic methods developed by Spradley. Field notes were used with follow-up interviews and dialogue between authors to enhance interpretation. Results: Patterns of healthy life among aged women using senior centers were categorized by age groups within the context of the four cultural elements of taking care of the body, relationality, temporality, and spatiality: active and passive control, maintenance of interdependence and individuality, expansion and maintenance of the daily routine, unity of peer relations and sustenance of family relations, spending time productively and tediously, and complementary and alternative space of the family relations. Conclusion: The informants in this study demonstrated healthy life by maintaining and strengthening continuous relationships developed in the senior centers without being isolated from the family and society. Patterns of their healthy life differed across age groups within the socio-cultural context. Therefore, interventions should be tailored to address age groups and community needs.

• Journal of Korean Public Health Nursing
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• v.27 no.3
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• pp.564-577
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• 2013

Purpose: The purpose of this study was to address differences between mental health according to sasang constitution and ego state among college students. Methods: Data for this cross-sectional study were collected by administration of questionnaires eliciting Woo's ego state scale, QSCC II for the sasang constitution classification, and SCL-90-R for mental health to 393 college students. Analysis was performed using IBM SPSS (version 19.0). Results: The Free Child ego and Adapted Child ego differed significantly among sasang types. The ego-gram pattern of So-eum type exhibited the N pattern (Nurturing Parent (NP)>Adapted Child (AC)>Adult (A)>Free Child (FC)>Critical Parent (CP), AC-high type), however, the ego-gram pattern of other constitution types showed the M pattern (NP>FC>A>AC>CP). No statistically significant differences in mental health were observed among sasang types, however, among ego states, AC and CP showed negative correlation with mental health status. Between So-eum type and So-yang type, AC was the factor predicting mental health. Between Tae-eum type and undefined type, AC and CP were factors predicting mental health. Conclusion: These findings suggest that sasang constitution could be an important factor in understanding the ego state and mental health status. We conclude that sasang constitution should be considered in interpretation of mental health status presentation in clients.

• Journal of Korean Critical Care Nursing
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• v.10 no.1
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• pp.51-62
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• 2017

Purpose: This study aimed to understand the essence of experiences of patients and family members during flexible visiting in an intensive care unit (ICU). Methods: This is a qualitative study using interviews with open ended questions. We used Colaizzi's method of phenomenological interpretation. Results: Flexible visiting in the ICU impacted the patients and their families in various ways. The following categories were extracted from the patients' experiences with flexible visiting: 1) the opportunity to feel the presence of the family and 2) the burden of unrestricted visiting. The following categories were extracted from the families' experiences with flexible visiting: 1) psychological comfort by convenience 2) being aware of health care professionals and critical care nursing in the intensive care unit, and 3) double trouble. Conclusions: These results showed that flexible visiting in the ICU affected the patients and their families positively and negatively. Therefore, nursing staff need to design psychological and social interventions that address the needs of patients and their families.