• Journal of the Korean Home Economics Association
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• v.45 no.6
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• pp.21-33
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• 2007

In present study, using longitudinal data of 161 families from Durham Child and Development Study, we examine the characteristics of infant child care chosen by families of different income levels and ethnicity in the U.S. Time-related changes in child care selection for the first year of the child's life were also investigated. Infants from high-income families were more likely to be cared for by someone other than the mother, compared to infant from lower-income families. African-American families were more likely to use non-maternal care for their infant compared to European-American families. Although the effects of income on type of care were not significant, descriptively, more low-income families used relative care while high-income families used more formal arrangements such as daycare center. Infants from low-income families began care earlier and low-income families paid less for care than other families. The findings call for attention to the importance of child care policy for low-income families as well as further research examining the function of cultural differences in selection of infant child care.

• Journal of Distribution Science
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• v.16 no.1
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• pp.59-71
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• 2018

Purpose - Recognizing the importance of small and medium enterprises and venture enterprises for the domestic economy, the purpose of the present study is to select factor termed export modes from among various export success strategies and factors that can help those enterprises secure export competitiveness in the world market to analyze the effects of export modes on the amounts of exports and periods until export after the foundation of those enterprises. Research design, data, and methodology - A structured questionnaire was used as a tool to derive the purpose of the study, and a questionnaire survey was conducted using a mobile survey technique that facilitated the distribution of questionnaire sheets and the collection of results. The main methodology used is crossover analysis, and the regression analysis technique was applied to verify the study results derived, thereby securing the reliability and validity of the final results derived. Results - Small and medium venture enterprises with shorter periods of time until the first export success after establishment adopted direct export modes more frequently, and those enterprises with larger amounts of the first export after establishment adopted direct export modes more frequently. The results of quantitative analysis, indicating that 66.1% of those enterprises with an export amount exceeding one billion won adopted direct export modes, can be said to support the foregoing. The crossover analysis results derived as such were reanalyzed using the PPML regression analysis technique to quantitatively identify that the amounts of the first export of enterprises that adopted direct export modes were larger than those of enterprises that adopted indirect export modes by 120%. Conclusions - The present study implies differentiated values in three aspects. First, the present study investigated and presented the export success factors and strategies of small and medium venture enterprises in a total of 14 countries in the Asian region, European region, North American region, African region, and South American region. Second, it intensively investigated five export modes to identify and verify that they were affecting the export success of small and medium venture enterprises. Third, based on the results of the investigation, the present study presented two marketing implications in the pragmatic aspect.

• Asian Pacific Journal of Cancer Prevention
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• v.15 no.9
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• pp.4091-4094
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• 2014

Background: This study used the receiver operating characteristic curve (ROC) to analyze Surveillance, Epidemiology and End Results (SEER) bronchioaveolar carcinoma data to identify predictive models and potential disparity in outcomes. Materials and Methods: Socio-economic, staging and treatment factors were assessed. For the risk modeling, each factor was fitted by a Generalized Linear Model to predict cause specific survival. The area under the ROC was computed. Similar strata were combined to construct the most parsimonious models. A random sampling algorithm was used to estimate modeling errors. Risk of cause specific death was computed for the predictors for comparison. Results: There were 7,309 patients included in this study. The mean follow up time (S.D.) was 24.2 (20) months. Female patients outnumbered male ones 3:2. The mean (S.D.) age was 70.1 (10.6) years. Stage was the most predictive factor of outcome (ROC area of 0.76). After optimization, several strata were fused, with a comparable ROC area of 0.75. There was a 4% additional risk of death associated with lower county family income, African American race, rural residency and lower than 25% county college graduate. Radiotherapy had not been used in 2/3 of patients with stage III disease. Conclusions: There are socio-economic disparities in cause specific survival. Under-use of radiotherapy may have contributed to poor outcome. Improving education, access and rates of radiotherapy use may improve outcome.

• Journal of the Korean Institute of Landscape Architecture
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• v.35 no.2 s.121
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• pp.37-48
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• 2007

An exhibit entitled 'Revelatory Landscapes' was held at the San Francisco Museum of Modem Art from May 5 to October 14, 2001. For this Museum's rot off-site outdoor exhibition, five outstanding design teams-Kathryn Gustafson, Hargreaves Associates, Hood Design, Tom Leader Studio, and ADOBE LA-created site-specific installations in Berkeley, Oakland, San Jose, and the San Francisco Bay Area. Each project showcased a hybridization of environmental art and landscape design. The main content revealed through revelatory landscapes were the natural, cultural, and historical palimpsest of the sites-particularly as related to the history of minorities such as Native American, African Americans and Latin Americans-as well as the every day life of ordinary people. To represent these ideas, a juxtaposition of the past and the present was broadly applied. Furthermore, the use of dramatic colors, textures, and forms in consideration of materials coupled with the revelation of natural elements such as wind and sunlight accelerated the effect of this juxtaposition. Every project of the Revelatory Landscapes exhibit requires a phenomenological experience to be appreciated. Via the five senses, these experiences cause a synesthetic experience beyond solely the visual. By examining the projects of 'Revelatory landscapes', the threshold for a new blending between environmental art and landscape design as well as new landscape design strategies that overcome the dichotomy between nature and culture will change and evolve.

• Research in Mathematical Education
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• v.14 no.3
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• pp.249-262
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• 2010

Large Midwest university faculty members proposed the Science and Technology Enhancement Program Project (STEP) to improve students' learning in the secondary mathematics classroom using modules of inquiry-based teaching. The purpose of this study was to determine the impact of the STEP Project on students' attitude toward mathematics. Hierarchical linear models (HLM) were used to evaluate the impact of the STEP Project. The sample group for the study was 130 ninth grade students enrolled in Integrated Algebra I in a large urban school district. The school was one of eight secondary schools that participated in the STEP Project. The classes in the treatment group were three of five classes ordered in terms of the highest, middle, and lowest mean GPA. The control group consisted of two other middle GPA classes. The classes had an average of 25 students. Teachers who previously had been involved in the STEP Project taught all treatment and control classes. The inquiry-based teaching activities provided by the project were confined to the treatment classes. The survey measuring students' attitudes toward mathematics were obtained for both groups of students. The inquiry-based teaching affected students' attitudes toward mathematics (p < 0.07, ES = 3.07). Especially, students who had preexisting low attitudes toward mathematics were significantly affected by treatment (p < 0.02, ES = 0.02), while the treatment positively affected African American students overall at p < 0.08 (ES = 0.58).

• Journal of the Korean Society of Safety
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• v.32 no.3
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• pp.8-14
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• 2017

This study examined the combustion and thermal characteristics of imported woods for building materials in Korea. Wooden specimens were confirmed by a cone calorimeter according to the KS F ISO 5660-1 standard. The combustion properties of the wooden specimens were measured in terms of the heat release rate (HRR), total heat released (THR), mass lose rate (MLR), and ignition time (time to ignition; TTI). The optical microscope was used for determine the anatomical characteristics of wood pit and structure. Also, the thermal properties were measured by thermogravimetric analysis (TGA) to determine the thermal stability of wooden specimens. The result of this experiment would be useful for fundamentals of guiding the combustion properties and thermal stability using wood application.

• Asian Pacific Journal of Cancer Prevention
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• v.15 no.1
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• pp.25-28
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• 2014

Background: This study analyzed whether socio-economic factors affect the cause specific survival of soft tissue sarcoma (STS). Methods: Surveillance, Epidemiology and End Results (SEER) soft tissue sarcoma (STS) data were used to identify potential socio-economic disparities in outcome. Time to cause specific death was computed with Kaplan-Meier analysis. Kolmogorov-Smirnov tests and Cox proportional hazard analysis were used for univariate and multivariate tests, respectively. The areas under the receiver operating curve were computed for predictors for comparison. Results: There were 42,016 patients diagnosed STS from 1973 to 2009. The mean follow up time (S.D.) was 66.6 (81.3) months. Stage, site, grade were significant predictors by univariate tests. Race and rural-urban residence were also important predictors of outcome. These five factors were all statistically significant with Cox analysis. Rural and African-American patients had a 3-4% disadvantage in cause specific survival. Conclusions: Socio-economic factors influence cause specific survival of soft tissue sarcoma. Ensuring access to cancer care may eliminate the outcome disparities.

• Imaging Science in Dentistry
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• v.46 no.3
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• pp.223-227
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• 2016

A static, unilateral, and focal bone depression located lingually within the ascending ramus, identical to the Stafne's bone cavity of the angle of the mandible, is being reported. During development of the mandible, submandibular gland inclusion may lead to the formation of a lingual concavity, which could contain fatty tissue, blood vessels, or soft tissue. However, similar occurrences in the ascending ramus at the level of the parotid gland are extremely rare. Similar cases were previously reported in dry, excavated mandibles, and 3 cases were reported in living patients. A 52-year-old African American male patient was seen for pain in the mandibular teeth. Panoramic radiography showed an unusual concavity within the left ascending ramus. Cone-beam computed tomography confirmed this incidental finding. The patient was cleared for the extraction of non-restorable teeth and scheduled for annual follow-up.

• Journal of Gastric Cancer
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• v.14 no.4
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• pp.271-274
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• 2014

Prostate cancer is the second most common cause of cancer death in men in the United States. The most common sites of metastasis include the bone, lymph nodes, lung, liver, pleura, and adrenal glands, whereas metastatic prostate cancer involving the gastrointestinal tract has been rarely reported. A 64-year-old African-American man with a history of prostate cancer presented with anemia. He reported the passing of dark colored stools but denied hematemesis or hematochezia. Colonoscopy revealed circumferential nodularity, and histology demonstrated metastatic carcinoma of the prostate. Esophagogastroduodenoscopy showed hypertrophic folds in the gastric fundus, and microscopic examination revealed tumor cells positive for prostate-specific antigen. Bone scanning and computed tomography of the abdomen and pelvis did not show metastasis. It is crucial to distinguish primary gastrointestinal cancer from metastatic lesions, especially in patients with a history of cancer at another site, for appropriate management.

• Journal of Gastric Cancer
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• v.16 no.3
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• pp.191-194
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• 2016

Hypercalcemia of malignancy due to metastatic gastric adenocarcinoma is extremely rare; in fact, to the best of our knowledge, only three case reports of hypercalcemia associated with metastatic gastric adenocarcinoma have been published in the literature to date. Herein, we report a rare case involving a 61-year-old African-American female who had hypercalcemia at initial presentation and who was later diagnosed with poorly differentiated gastric adenocarcinoma with extensive liver metastases, without bone involvement. She was found to have elevated parathyroid hormone-related peptide and normal parathyroid hormone levels. Despite aggressive treatment, she died within a few months of diagnosis.