• Title/Summary/Keyword: 3-D perception

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Quality Variation of Domestic Wheat Compared to Imported Wheat Depending on Harvest Year (수확 연도별 우리밀과 수입밀의 품질 변이 비교)

  • Kwak, Han Sub;Kim, Tae Jong;Joo, Eun Young;Cha, Jang Hun;Kim, Ah Jin;Kim, Mi Jeong;Kim, Sang Sook
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.46 no.1
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    • pp.146-151
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    • 2017
  • Quality characteristics (moisture, protein, ash, bulk density, falling number, damaged kernel, and foreign material) of 443 domestic wheat samples harvested between 2011 and 2013 were compared with those of 160 imported wheat samples from the United States, Australia, and Canada. Moisture content of domestic wheat (10.9~13.9%) was generally higher than that of imported wheat (8.0~12.6%). Large variation in protein content was found in domestic wheat compared to imported wheat even though variation in protein content of domestic wheat tended to decrease every year, implying quality control efforts for domestic wheat. A similar trend was observed in ash content, which was approximately 0.1% higher in domestic wheat kernels over 3 years. Imported wheat samples had a falling number of 300 or above. On the other hand, some domestic wheat samples had a falling number of 300, which meant low quality of wheat kernels. Generally, quality variations in domestic wheat kernels decreased over the years; however, it is necessary to maintain minimum requirements of moisture content and falling number for high and consistent quality domestic wheat.

Real-time 3D Audio Downmixing System based on Sound Rendering for the Immersive Sound of Mobile Virtual Reality Applications

  • Hong, Dukki;Kwon, Hyuck-Joo;Kim, Cheong Ghil;Park, Woo-Chan
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.12 no.12
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    • pp.5936-5954
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    • 2018
  • Eight out of the top ten the largest technology companies in the world are involved in some way with the coming mobile VR revolution since Facebook acquired Oculus. This trend has allowed the technology related with mobile VR to achieve remarkable growth in both academic and industry. Therefore, the importance of reproducing the acoustic expression for users to experience more realistic is increasing because auditory cues can enhance the perception of the complicated surrounding environment without the visual system in VR. This paper presents a audio downmixing system for auralization based on hardware, a stage of sound rendering pipelines that can reproduce realiy-like sound but requires high computation costs. The proposed system is verified through an FPGA platform with the special focus on hardware architectural designs for low power and real-time. The results show that the proposed system on an FPGA can downmix maximum 5 sources in real-time rate (52 FPS), with 382 mW low power consumptions. Furthermore, the generated 3D sound with the proposed system was verified with satisfactory results of sound quality via the user evaluation.

Breast Cancer Knowledge, Perception and Breast Self-Examination Practices among Yemeni Women: an Application of the Health Belief Model

  • Al-Sakkaf, Khaled Abdulla;Basaleem, Huda Omer
    • Asian Pacific Journal of Cancer Prevention
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    • v.17 no.3
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    • pp.1463-1467
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    • 2016
  • Background: The incidence of breast cancer is rapidly increasing in Yemen with recent indications of constituting one-third of female cancers. The main problem in Yemen remains very late presentation of breast cancer, most of which should have been easily recognisable. Since stage of disease at diagnosis is the most important prognostic variable, early diagnosis is an important option to be considered for control of breast cancer in low resourced settings like Yemen. In the present study, we aimed at describing breast cancer knowledge, perceptions and breast self-examination (BSE) practices among a sample of Yemeni women. Materials and Methods: This cross-sectional study covered 400 women attending four reproductive health centres in Aden, Yemen through face-to-face interview using a structured questionnaire during April - July 2014. We collected data on sociodemographic characteristics, knowledge about breast cancer, and screening practices as well as respondents' perceptions based on the five sub scales of the Health Belief Model (HBM): perceived susceptibility; perceived severity; perceived barriers; perceived benefits; and self-efficacy. The response format was a five-point Likert scale. Statistical Package for Social Sciences (SPSS 20) was used for statistical analysis. Statistical significance was set at p<0.05. Logistic regression analysis was conducted with BSE as a dependent variable. Results: The mean age of women was 26.5 (S.D=5.6) years. The majority (89.0%) had never ever performed any screening. Two-thirds of respondents had poor knowledge. Perceived BSE benefits and self-efficacy and lower BSE barriers perception were significant independent predictors of BSE practice. Conclusions: Poor knowledge and inadequate BSE practices are prevailing in Yemen. The need for implementing culturally sensitive targeted education measures is mandatory in the effort to improve early detection and reduce the burden of breast cancer.

Necessity of Research for Safe Drug use in Pregnant Women (임신부에서 약물의 안전사용을 위한 연구의 필요성)

  • Han, Jung Yeol;Cho, Geum Joon;Oh, Jung Mi
    • Journal of The Korean Society of Maternal and Child Health
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    • v.21 no.3
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    • pp.159-165
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    • 2017
  • The thalidomide tragedy in the 1960s has resulted in a perpetuation of a certain perception amongst physicians and pregnant women that the use of medication during pregnancy is a potential teratogen. Consequently, physicians hesitate in prescribing medication to pregnant women. In addition, pregnant women often refuse medication despite therapeutic necessity because of this existing perception. Recently there have been frequent adverse pregnancy outcomes related to the recurrence of chronic diseases, such as hypertension and diabetes, following pregnancy in older women. And there are lots of unnecessary termination of pregnancy due to the of information of medication exposed to medication following over 50% of unintended pregnancy. In light of this, better dissemination of information regarding the safe usage of medication for pregnant women is required. This would not only be cost-effective in terms of medical expenditure, but also prove beneficial for the treatment of diseases. In addition, Korea needs to adapt to the increasing changes of the international information system regarding supporting the safe usage of medication during pregnancy. An example of this is shown by the recent changes to the labeling of medication by the United States Food and Drug Administration. The new labeling includes information on the risk of usage, rather than just an arbitrary alphabetic classification of B, C, D, or X. Furthermore, this information is limited in Korea because of the lack of research, which in turn is due to several limitations on ethics and methodology, as well as present regulations on the research of pregnant women. From this, we can learn that government support is critical for the establishment of research so that we can alter the perception that all medication is harmful to pregnant women.

Effect of Nurse's Perception of People with Disabilities, Experience of Contact with Persons with Disabilities, and Human Rights Sensitivity on Attitudes toward Persons with Disabilities (간호사의 장애인에 대한 인식, 장애인 접촉경험, 인권감수성이 장애인에 대한 태도에 미치는 영향)

  • Ahn, Eun-young;Lee, Hye-Kyung
    • Journal of the Korean Applied Science and Technology
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    • v.39 no.2
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    • pp.205-219
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    • 2022
  • This study is a descriptive research study to understand the effects of nurses' perception of the disabled, contact experience with the disabled, and human rights sensitivity on attitudes toward the disabled. The subjects of the study were 181 nurses working at two university hospitals in D City and one university hospital in C Special Self-Governing City. Data were collected from September 2, 2021 to October 6, 2021. The collected data wre analyzed using IBM SPSS 26.0 program, and analyzed with t-test, ANOVA, Pearson's Correlation Coefficients, and Multiple Regression Analysis. Factors affecting the subject's attitude toward people with disabilities were perception of people with disabilities(t=-3.96, p<.001), presence or absence of contact with patients with disabilities(t=3.23, p=.001), and the ability to perceive responsibility among human rights sensitivity(t=2.13, p=.035), whether or not they had completed education for improvement the awareness of the disabilities(t=2.90, p=.004), and whether they were recognized of the Act on the Right to Health and Medical Accessibility for the Disabled(t=2.44, p=.016), which showed 30% of explanatory power(F=9.36, p<.001). Accordingly, it is necessary to develop an educational program that can foster nurses' attitudes toward the disabled, including awareness of the disabled, human rights sensitivity, the Health Rights Act for the Disabled, and the experience of contact with the disabled.

Quantitative Evaluation of the Performance of Monaural FDSI Beamforming Algorithm using a KEMAR Mannequin (KEMAR 마네킹을 이용한 단이 보청기용 FDSI 빔포밍 알고리즘의 정량적 평가)

  • Cho, Kyeongwon;Nam, Kyoung Won;Han, Jonghee;Lee, Sangmin;Kim, Dongwook;Hong, Sung Hwa;Jang, Dong Pyo;Kim, In Young
    • Journal of Biomedical Engineering Research
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    • v.34 no.1
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    • pp.24-33
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    • 2013
  • To enhance the speech perception of hearing aid users in noisy environment, most hearing aid devices adopt various beamforming algorithms such as the first-order differential microphone (DM1) and the two-stage directional microphone (DM2) algorithms that maintain sounds from the direction of the interlocutor and reduce the ambient sounds from the other directions. However, these conventional algorithms represent poor directionality ability in low frequency area. Therefore, to enhance the speech perception of hearing aid uses in low frequency range, our group had suggested a fractional delay subtraction and integration (FDSI) algorithm and estimated its theoretical performance using computer simulation in previous article. In this study, we performed a KEMAR test in non-reverberant room that compares the performance of DM1, DM2, broadband beamforming (BBF), and proposed FDSI algorithms using several objective indices such as a signal-to-noise ratio (SNR) improvement, a segmental SNR (seg-SNR) improvement, a perceptual evaluation of speech quality (PESQ), and an Itakura-Saito measure (IS). Experimental results showed that the performance of the FDSI algorithm was -3.26-7.16 dB in SNR improvement, -1.94-5.41 dB in segSNR improvement, 1.49-2.79 in PESQ, and 0.79-3.59 in IS, which demonstrated that the FDSI algorithm showed the highest improvement of SNR and segSNR, and the lowest IS. We believe that the proposed FDSI algorithm has a potential as a beamformer for digital hearing aid devices.

Convergence lnfluencing Factors on Disaster Nursing Core Competencies of Nursing Students (일 지역 간호대학생의 재난간호핵심역량에 미치는 융합적 영향요인)

  • Oh, Yun-Jung
    • Journal of Convergence for Information Technology
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    • v.12 no.4
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    • pp.77-84
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    • 2022
  • The aim of this study was to identify the convergence influencing factors on disaster nursing core competencies of nursing students. The subjects of this study surveyed 187 nursing students in D city with a structured self-report questionnaire. Data were analyzed by the SPSS 18.0 program, t-test, ANOVA, correlation and multiple regression. The disaster nursing core competencies average mean score was 3.15(±0.40). Grade and satisfaction of clinical practice were the significant factors related to disaster nursing core competencies in these subjects. Disaster nursing core competencies was positively correlated with disaster perception, disaster attitudes and self-efficacy. The influencing factors on disaster nursing core competencies were self-efficacy(β=0.276), disaster attitudes(β=0.200) and grade(β=0.172). The explanatory power of these variables was 19.1%. Therefore, it is necessary to develop disaster related curriculum and subjects that can improve the disaster nursing core competencies based on the important factors affecting the disaster nursing core competencies.

The Effects of Child Abuse Professional Responsibility, Perceived Behavior Control, and Child Rights Recognition Percevied by Nursing Students on the Intention to Report Child Abuse (간호대학생이 지각하는 아동학대 전문가적 책임, 지각된 행위 통제, 아동권리인식이 아동학대 신고 의도에 미치는 영향)

  • Hoseong Choi;Jaewoo Oh
    • The Journal of the Convergence on Culture Technology
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    • v.10 no.3
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    • pp.329-339
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    • 2024
  • This study was conducted to identify nursing students' perceived professional responsibility for child abuse, perceived behavior control, children's rights awareness, and degree of intention to report child abuse, and to identify influencing factors on the intention to report child abuse. Data collection was collected through a questionnaire among 150 nursing students from University C and University D in Province C from April 28 to May 15, 2023. The collected data were analyzed using SPSS statistics 29.0 program. The factor influencing nursing students' perceived intention to report child abuse was the perception of children's rights. The explanatory power of intent to report child abuse was 13.6% overall. Nursing students' perceived intention to report child abuse was positively correlated with perceived behavioral control and perception of children's rights. Based on the results of this study, it is necessary to study educational programs and environments to increase awareness of children's rights in order to increase the willingness of nursing students to report child abuse.

Stereoscopic 3-D shape constancy (입체시에 근거한 3차원 모양 항상성의 검증)

  • 이형철
    • Korean Journal of Cognitive Science
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    • v.10 no.3
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    • pp.17-28
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    • 1999
  • Systematic distortions in perceived 3-D shape were obtained for elliptical and parabolic stereoscopic surfaces viewed at different distances under full and reduced cue conditions. In both conditions of Experiments 1 and 3, elliptical hemi-cylinders a appeared near veridical at the 45 cm viewing distances and flattened up to 74% of veridical at 135 cm. In Experiment 2, under full cue conditions, parabolic hemi-cylinders a appeared stretched to 118% of veridical at 45 cm, near veridical at 90 cm, and flattened to 85% of veridical at 135 cm. Under reduced cue conditions parabolas appeared flatter overall: veridical curvature was obtained at 45 cm viewing distance with flatness increasing to 68% of veridical at 135 cm. Results support a scaling explanation of perceived 3-D shape from disparity and rule out the alternative hypothesis that disparity curvature, an optical invariant, provides information for the direct perception of 3-D s shape.

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Perceptions held by Investigators, IRB Members and IRB Administrators on the Bioethical Oversight System of National R&D Projects (국가연구개발과제 생명의학윤리 감독체계에 대한 인식조사 및 제언)

  • Kang, Young Hee;Lee, Sang Mi;Kwon, Kwang Il;Kim, Eun Young;Huh, Woo Sung
    • Korean Journal of Clinical Pharmacy
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    • v.24 no.2
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    • pp.135-143
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    • 2014
  • Purpose: Aim of this study was to gather and evaluate perceptions of investigators, IRB members, and IRB administrators on the appropriateness of IRB review process and bioethical oversight system of national R&D (NR&D) projects. Method: Investigators, IRB members, and IRB administrators at 17 different institutions were surveyed using convenience sampling and survey questionnaires were partially group-specialized to consider any differences between the groups. Results: Participants included 29 investigators, 37 IRB members, and 17 administrators with response rate of 100% (83 of 83). According to the responses obtained, insufficient preparation time for constructing protocol and gaining IRB approval was one of the main problems in the IRB review process (investigator 79.3%, IRB administrator 88.2%). Also, discrepancy between NR&D and IRB's protocol formats was another major issue (IRB members 96.4%, IRB administrator 100%) and most investigators (89.7%) had to modify the original NR&D protocol to obtain IRB approval. Moreover, it was reported that 13.8% of investigators and 31.3% of IRB administrators did not submit midyear reports to IRB and for bioethical issues of NR&D projects, 17.2% of investigators did not include information on project status and safety issues in the annual reports. Conclusion: In conclusion, for successful and ethical completion of R&D projects, revision of both IRB review process and NR&D project protocol formats as well as implementation of appropriate bioethical oversights are necessary.