• 제목/요약/키워드: Annoyance

검색결과 229건 처리시간 0.023초

표준바닥충격원의 ACF/IACF 및 Zwicker 파라메타 분석 (ACF/IACF and Zwicker Parameters Analysis on Floor Impact Noise)

  • 전진용;정정호;;조문재
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2001년도 추계학술대회논문집 II
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    • pp.945-950
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    • 2001
  • Floor impact noise has been evaluated by investigating the temporal and spectral characteristics of the noise. The noises generated by different impactors were analyzed to find out whether there is any correlation with the factors of ACF /IACF (Autocorrelation Function/Inter-aural Cross-correlation Function) [1] and Zwicker parameters [2]. Experiments were undertaken to compare the objective and subjective parameters of the floor impact noises generated by a bang/tapping machine, a rubber ball [3], and a walker. As a result, it was found that $\phi$ (0) and IACC extracted from ACF/IACF, and Loudness, Unbiased Annoyance from Zwicker parameters showed high correlation with subjective evaluations of loudness concerning floor impact noises. In addition, it was revealed that jumping is similar to the ball.

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4,500 TEU 컨테이너 운반선의 소음 제어 (Noise Control for 4,500 TED Container Carrier)

  • 김동해;임도형
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2001년도 추계학술대회논문집 II
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    • pp.1313-1316
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    • 2001
  • Generally, container carrier has larger engine than other commercial vessels and the engine casing is located in accommodation space. Therefore, the noise levels of cabins and engine room could be exceeded the specified noise limits and might be an annoyance to crews, and which can result in poor ship quality. Main subject of this study is to predict noise levels of the 4,500 TED container carrier by statistical energy analysis method in order to comply with contracted noise limits and to compare with the measured values. Additionally, through the contribution analysis of noise sources to each cabins, and appropriate countermeasures are proposed and the reduction effect of each noise control measure is studied by the analysis method. This study will contribute to reduce the noise levels of similar vessel.

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SIP공법에 의한 항타소음의 전달 및 감쇠특성에 관한 실험적 연구 (An Experimental Study on the Characteristics of Attenuation and Propagation of Pilings Noise by SIP Method in Construction Field)

  • 이병윤;김병주;박재영;김재수
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 1997년도 추계학술대회논문집; 한국과학기술회관; 6 Nov. 1997
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    • pp.227-236
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    • 1997
  • Construction equipment noise has caused much annoyance for a number of dwellers in nearby construction field and has become a very serious issue in our living environment. Therefore, in our country, a practical solution and a better method of reducing construction equipment noise are highly required in construction field. Practical solutions for the construction equipment noise, however, are very difficult because the poorness of basic data and insufficiency of the existing research. Especially, in order to establishment of sound insulation plan about pilings work noise that has highly sound pressure level and impactive, a real situation of sound characteristics about pilings work noise in foundation work demands close investigation. In this point, this study attempts to surveys the characteristics of attenuation and propagation of construction equipment noise in pilings work using SIP(soilcement injected precast pile) method. And this study intends to get the basic data for establishment of a standard about construction noise.

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어린이 달리기와 뛰어내릴 때의 충격력 특성 (Impact Force Characteristics of Running and Jumping by Child)

  • 김경우;최현중;정영선;양관섭
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2004년도 추계학술대회논문집
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    • pp.265-268
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    • 2004
  • Impact sounds, such as those created by footsteps, the dropping of an object or the moving of furniture, can be a source of great annoyance in residential buildings. Running and jumping impact sound by child are one of the most irritating noises in an apartment buildings. It's necessary to know that the impact force characteristics of real impact source in an apartment buildings. This study aims to investigate the impact force characteristics and impact force time of running and jumping by child. This study cud out investigation through the 155 children in school. The results of this study is that jumping impact force is greater than running impact force but impact force time is lower than that.

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자연음과 소음에 대한 감성과 심리음향인자와의 상관성 (The Correlation between Human sensibility and psychoacoustic parameters for natural sound and artificial noise)

  • 김원식;조문재;황재호;이지혜;서재갑
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2000년도 추계학술대회논문집
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    • pp.489-494
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    • 2000
  • 제품과 사용자간에 필연적으로 존재하는 소리를 쾌적하게 하기 위한 연구로서 자연음 6종과 소음 6종의 음압(dB)이 비슷하도록 조절하였을 때 소리의 어떠한 물리적 특성이 긍/부정감성에 주된 영향을 미치는지를 파악하기 위하여 남/녀 각각 35명씩의 대학생들에게 7점척도의 8가지 형용사 쌍을 이용한 음질평가 청감실험을 한 결과 물소리를 포함한 자연음은 소음보다 대체로 긍정감성이 높게 평가되었고 긍정감성과 심리음향인자와의 상관성은 Loudness의 -0.37을 비롯하여 "-"상관성을, Unbiased annoyance와 심리음향인자들과의 상관성은 Loudness의 0.92를 비롯한 "+" 상관성을 각각 갖었으며 여자는 남자보다 긍/부정감성에 더욱 예민하게 반응하는 것으로 나타났다.

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Sand Drain 공법에 의한 작업시 발생하는 건설소음의 특성에 관한 연구 (A Study on the Characteristics of Construction Noise by Sand Drain Method)

  • 윤해동;김재수
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2000년도 추계학술대회논문집
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    • pp.500-505
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    • 2000
  • Recently, with the increasing of construction works, large construction equipment are used to reduce the term of work and labor cost in construction field. Therefore, construction equipment noise has caused much annoyance for a number of dweller in nearby construction field and it has become a very serious problem in our living environment. Neverthless, in our country, adequite guidelines for the construction equipment noise are very deficiency because of the lack of basic data and insufficient research works. From this point of view, this study attempts to survey the characteristics of attenuation and propagation of Sand Drain Method in construction field. On the basis of measurement value, we analysed about prediction possibility of Sand Drain Method. This study also present a basic data found a effective plans for Sand Drain Method.

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수치해석을 통한 자동차 사이드 미러 주위의 공력 및 소음해석 (Numerical Analysis of Aerodynamics and Acoustics around a Car Side mirror)

  • 박기환;박현호;임태헌;최은동;김문상
    • 항공우주시스템공학회지
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    • 제3권4호
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    • pp.1-6
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    • 2009
  • Aerodynamic noise is becoming the major source of annoyance for modern cars recently and is caused by many different noise sources in a car. Appropriate CFD technologies, therefore, have been developed to resolve the noise problems related with aerodynamics. It is necessary for designers to fully understand the relationship between vehicle aerodynamics and wind noise acoustics. In this study, we simulate the flow fields around two different shapes of side mirror models of passenger car and analyze the noise phenomena around one side mirror model that has lower drag than the other model using Fluent 6.3.

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가정간호사의 실무체험 연구 (A Study on the Lived Experiences of Homecare Nurses)

  • 서문자;김소선;신경림;강현숙;김금순;박호란;김혜숙
    • 대한간호학회지
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    • 제30권1호
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    • pp.84-97
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    • 2000
  • The Necessity and Purpose of the Study Recently the number of patients with chronic diseases and the aged patients is increasing steadily. Furthermore, due to the expansion of health insurance system, the number of patients hospitalized in the general hospital is increasing at a surprising speed. However, hospitals urge the early discharge of the patients for the efficiencies of hospital administration, and therefore, the number of patients who must be taken care of in their home is also increasing. Homecare nursing is one of the health care service for the patients at home who require continual attention and care, and now increasing attentions are given to it as one of the professional nursing fields. However, it was almost impossible to find a study on the actual experiences of the homecare nurses written by their own language in Korea, that it also posed a great difficulty in understanding their diverse experience. Considering these situation, this study will help understanding of them, and provide the fundamental data on their experiences for making policies to develop homecare nursing. Methods of Research Phenomenological research method was employed to analyze the lived experiences of homecare nurses fundamentally. Data collection Data were collected from August 1998 to December 1998 from ten homecare nurses who worked for patients under the homecare nursing setting as model cases designated by Seoul Nurses Association and who agreed to the purpose of this study after listening to and understanding the explanation completely. The in-depth interview was carried at the time which was convenient both for the researcher and participants for one or two hours, and recovered with the approval participants. The first interview covered diverse and broad areas like the situation of homecare nursing, and their feelings and thoughts over it, and in the second and third interviews, more specific questions are asked. Data Analysis For the phenomenological analysis, contents analysis was employed. The data collected from the participants were analyzed into the following procedures according to Van Manen 's phenomenological analysis. 1) Reserve the preconception of the researcher by restricting it inside parenthesis. 2) Make a thorough observation of the lived experiences by insight process. 3) Analyze the contents (Find out the repetitive factors) 4) Interpret the essence found. 5) State the meaning of the interpretation. Results and discussion 1. Fear and expectation for the first visit. (unfamiliarity, awkwardness, anxiety, shivering) 2. Mingle with the family (feeling friendly with the family, becoming like a family member) 3. Being proud of her own know-how (learning the know-how, organizing alternatives, building up confidence) 4. Pity for the poor. (criticizing the current government, feeling ashamed, feeling anger) 5. Difficulty of constructing cooperative system with physicians (strenuousness, frustration) 6. Helplessness due to the lack of support system (difficulty to get supplies, annoyance, embarrassment by institutional restraints) 7. Anxiousness for heavy traffic and parking (annoyance, hastiness) 8. Ethical conflicts (pity for the patients and family, skepticism about lengthening life maintenance) 9. Burden for the possible accident (pressure, anxiety, conflict, physical exhaustion) 10. Establishment of identity as a professional (fulfillment, worth, joy) 11. Being distressed at other's ignorance

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초등학생의 과학 학습 정서 분석 (Analysis of Science Academic Emotion of Elementary Students)

  • 김동현;김효남
    • 한국과학교육학회지
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    • 제33권2호
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    • pp.444-465
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    • 2013
  • 본 연구의 목적은 초등학생의 과학 학습 상황에서의 정서를 분석하여 실제 과학 수업 상황에서 다룰 수 있는 정의적 수준의 향상을 위한 구체적인 시사점을 도출하는 것이다. 이를 위하여 문헌을 통해 추출한 14개 정서들에 대해 초등학교 6학년 642명에게 설문을 실시했고 각 정서의 핵심 유발 상황 및 강도와 빈도를 분석하였다. 연구를 통하여 우리나라 초등학생들의 14개 정서에 대한 정서 유발 핵심 상황이 각 정서별로 다양하게 나타났다는 것을 알 수 있었다. 긍정 정서와 부정 정서로 나누어 살펴보면 긍정 정서는 대체로 실험의 상황에서 나타났으며 부정 정서는 평가, 자신, 타인, 교수학습 방법 등 보다 다양한 상황에서 나타남을 알 수 있었다. 따라서 각 정서 유발 상황을 분석 및 조절하고 정서의 변화를 목적으로 한 수업 전략을 구성할 수 있을 것이다. 우리나라 초등학생들의 14개 정서에 대한 강도와 빈도 분석에서 긍정 정서의 강도와 빈도가 부정 정서보다 높게 나타났다. 부정 정서 중에서 강도와 빈도가 높게 나타난 지루함, 귀찮음, 답답함과 같은 부정 정서에 대해서는 정서 유발 상황을 분석 및 조절하거나 긍정 정서 유발을 통해 이러한 부정정서를 줄일 수 있을 것이다. 본 연구는 과학 학습 상황에서의 정서를 살펴봄으로써 정의적 수준 향상을 위한 실질적인 시사점을 확인했다는데 의의가 있다고 할 수 있다.

도어 안전고리 스마트 제어시스템 설계 및 구현 (Design and Implement a Smart Control System of Door Security Guard)

  • 이효승;오재철
    • 스마트미디어저널
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    • 제6권1호
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    • pp.61-67
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    • 2017
  • 현 시대에 사는 사람들 중에 다수는 자의적이거나 타의적인 이유로 결혼을 하지 않거나 독립하여 혼자 생활하는 것을 선호하고 있고 그 이유로는 크게 타인에게 간섭받기 싫어서 또는 경제적 사정 등이 있으며, 특히 자신만의 편안한 생활을 추구하는 직장여성들이 일인 생활을 선호하는 추세이다. 하지만 이러한 점을 타겟으로 하여 악용하는 범죄의 표적이 되기도 한다. 그로인하여 현관문 등에 안전고리 등과 같은 보안장치를 추가 장착하여 사용하기도 한다. 현관문의 안전고리를 잠그는 행위는 그렇게 어려운 일은 아니지만 쉽게 잊어버릴 수 있고, 취침 전 잠자리에 위치하여 있을 때 안전고리의 잠금 여부를 확인하거나 잠가야할 때 다시 일어나서 현관으로 이동해 안전고리를 확인하고 잠가야 한다. 하지만 그 번거로움과 불편함으로 괜찮겠지 하는 마음에 안전고리를 채우지 않을 때가 많다. 본 논문에서는 이러한 번거로움을 해결하고 보다 안전한 생활을 유지하기위한 방법으로 스마트 폰을 이용하여 원격에서 안전고리를 조정할 수 있는 장치를 설계 및 구현하여 보다 편하게 안전고리를 사용하여 불법주거 침입 등의 범죄로 부터 안전을 도모 하고자 한다.