• 제목/요약/키워드: Play World

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Detecting Stress Based Social Network Interactions Using Machine Learning Techniques

  • S.Rajasekhar;K.Ishthaq Ahmed
    • International Journal of Computer Science & Network Security
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    • 제23권8호
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    • pp.101-106
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    • 2023
  • In this busy world actually stress is continuously grow up in research and monitoring social websites. The social interaction is a process by which people act and react in relation with each other like play, fight, dance we can find social interactions. In this we find social structure means maintain the relationships among peoples and group of peoples. Its a limit and depends on its behavior. Because relationships established on expectations of every one involve depending on social network. There is lot of difference between emotional pain and physical pain. When you feel stress on physical body we all feel with tensions, stress on physical consequences, physical effects on our health. When we work on social network websites, developments or any research related information retrieving etc. our brain is going into stress. Actually by social network interactions like watching movies, online shopping, online marketing, online business here we observe sentiment analysis of movie reviews and feedback of customers either positive/negative. In movies there we can observe peoples reaction with each other it depends on actions in film like fights, dances, dialogues, content. Here we can analysis of stress on brain different actions of movie reviews. All these movie review analysis and stress on brain can calculated by machine learning techniques. Actually in target oriented business, the persons who are working in marketing always their brain in stress condition their emotional conditions are different at different times. In this paper how does brain deal with stress management. In software industries when developers are work at home, connected with clients in online work they gone under stress. And their emotional levels and stress levels always changes regarding work communication. In this paper we represent emotional intelligence with stress based analysis using machine learning techniques in social networks. It is ability of the person to be aware on your own emotions or feeling as well as feelings or emotions of the others use this awareness to manage self and your relationships. social interactions is not only about you its about every one can interacting and their expectations too. It about maintaining performance. Performance is sociological understanding how people can interact and a key to know analysis of social interactions. It is always to maintain successful interactions and inline expectations. That is to satisfy the audience. So people careful to control all of these and maintain impression management.

A New Challenge to Korean American Religious Identity: Cultural Crisis in Korean American Christianity

  • Ro, Young-Chan
    • 대순사상논총
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    • 제18권
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    • pp.53-79
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    • 2004
  • This paper explores the relationship between Korean immigrants to the United States and their religious identity from the cultural point of view. Most scholarly studies on Korean immigrants in the United States have been dominated by sociological approach and ethnic studies in examining the social dimension of the Korean immigrant communities while neglecting issues concerning their religious identity and cultural heritage. Most Korean immigrants to America attend Korean churches regardless their religious affiliation before they came to America. One of the reasons for this phenomenon is the fact that Korean church has provided a necessary social service for the newly arrived immigrants. Korean churches have been able to play a key role in the life of Korean immigrants. Korean immigrants, however, have shown a unique aspect regarding their religious identity compared to other immigrants communities in the United States. America is a nation of immigrants, coming from different parts of the world. Each immigrant community has brought their unique cultural heritage and religious persuasion. Asian immigrants, for example, brought their own traditional religions such as Hinduism, Buddhism. People from the Middle Eastern countries brought Islamic faith while European Jews brought the Jewish tradition. In these immigrant communities, religious identity and cultural heritage were homo genously harmonized. Jewish people built synagogue and taught Hebrew, Jewish history, culture, and faith. In this case, synagogue was not only the house of worship for Jews but also the center for learning Jewish history, culture, faith, and language. In short, Jewish cultural history was intimately related to Jewish religious history; for Jewish immigrants, learning their social and political history was indeed identical with leaning of their religious history. The same can be said about the relationship between Indian community and Hinduism. Hindu temples serve as the center of Indian immigrantsin providing the social, cultural, and spiritual functions. Buddhist temples, for that matter, serve the same function to the people from the Asian countries. Chinese, Japanese, Vietnamese, Tibetans, and Thais have brought their respective Buddhist traditions to America and practice and maintain both their religious faith and cultural heritage. Middle Eastern people, for example, have brought Islamic faith to the United States, and Mosques have become the center for learning their language, practicing their faith, and maintaining their cultural heritage. Korean immigrants, unlike any other immigrant group, have brought Christianity, which is not a Korean traditional religion but a Western religion they received in 18th and 19th centuries from the West and America, back to the United States, and church has become the center of their lives in America. In this context, Koreans and Korean-Americans have a unique situation in which they practice Christianity as their religion but try to maintain their non-Christian cultural heritage. For the Korean immigrants, their religious identity and cultural identity are not the same. Although Korean church so far has provides the social and religious functions to fill the need of Korean immigrants, but it may not be able to become the most effective institution to provide and maintain Korean cultural heritage. In this respect, Korean churches must be able to open to traditional Korean religions or the religions of Korean origin to cultivate and nurture Korean cultural heritage.

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아인산염 처리에 따른 철원양파의 페놀화합물 비교 연구 (Comparative Study on Phenolic Compounds of Cheorwon Onion by Phosphite Treatment)

  • 김연복;이희종;박철호;김동현;구현정;장광진
    • 현장농수산연구지
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    • 제20권2호
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    • pp.105-114
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    • 2018
  • 본 연구는 다른 지역에 비해 일교차가 큰 철원 지역에서 재배되고 있는 양파에 친환경제제로 사용되는 아인산염을 농도별로 처리하여 생육특성과 페놀화합물 함량의 변이를 알아보기 위해 수행되었다. 그 결과 아인산염 처리 후 양파의 구무게, 너비, 폭과 당 함량에는 큰 영향을 미치지 않았다. 반면 페놀화합물에는 영향을 미쳐 아인산 500ppm을 처리했을 때 벤조산, 카페산, 쿠마린산, 캠페롤, 쿼르세틴 함량이 무처리구보다 다소 높은 함량을 보였다. 따라서 아인산염은 생육에는 큰 영향을 주지는 않았지만 물질 변화에 영향을 미쳐 물질 촉매제 역할과 수용성 인산과 칼리를 공급하여 장마기에 질소와 균형을 이룰 수 있는 방법으로도 큰 역할을 할 수 있다고 사료된다.

롤투롤 공정의 이해 및 동향 (Understanding and Trends of Roll-to-Roll Operation)

  • 하영우;김기환;임동찬
    • 한국전기전자재료학회논문지
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    • 제37권1호
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    • pp.36-42
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    • 2024
  • 롤투롤 공정은 제조 환경에서 필수적인 위치를 차지하고 있으며, 그 중요성은 수많은 산업에 걸쳐 반향을 일으키고 있다. 이 다목적 기술 플랫폼은 다양한 공정 방법을 포괄하고 광범위한 재료 범주를 수용하여 현대 생산의 초석이 되고 있다. 이 광범위한 영역에서 일반적으로 사용되는 두 가지 코팅 기술인 슬롯 다이와 그라비아 코팅 방식은 완벽한 코팅을 구현하는 정밀도와 효율성으로 각광받고 있다. 또한 건조 공정은 열 건조, 적외선(IR) 건조, 자외선(UV) 건조 방식에 크게 의존하여 재료를 액체 또는 반액체 상태에서 바로 사용할 수 있는 고체 제품으로 신속하게 전환한다. 롤투롤 공정의 중요성은 제조 공정을 간소화하고 비용을 절감하며 제품 품질을 향상시킬 수 있다는 점이 있다. 이 글에서는 이러한 일반적인 롤투롤 공정 방법의 복잡성에 대해 자세히 살펴봄으로써 이러한 중요성의 깊이를 파악하고자 한다. 엄격한 연구와 세심한 데이터 수집을 통해 이러한 기술이 다양한 산업을 형성하고 제조 세계를 발전시키는 데 중추적인 역할을 하는 것을 조명하고자 한다. 롤투롤 공정의 중요성을 이해함으로써 롤투롤 공정의 잠재력을 최대한 활용하고 생산 혁신과 우수성을 위한 기반을 마련할 수 있을 것이다.

Effect of the initial imperfection on the response of the stainless steel shell structures

  • Ali Ihsan Celik;Ozer Zeybek;Yasin Onuralp Ozkilic
    • Steel and Composite Structures
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    • 제50권6호
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    • pp.705-720
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    • 2024
  • Analyzing the collapse behavior of thin-walled steel structures holds significant importance in ensuring their safety and longevity. Geometric imperfections present on the surface of metal materials can diminish both the durability and mechanical integrity of steel shells. These imperfections, encompassing local geometric irregularities and deformations such as holes, cavities, notches, and cracks localized in specific regions of the shell surface, play a pivotal role in the assessment. They can induce stress concentration within the structure, thereby influencing its susceptibility to buckling. The intricate relationship between the buckling behavior of these structures and such imperfections is multifaceted, contingent upon a variety of factors. The buckling analysis of thin-walled steel shell structures, similar to other steel structures, commonly involves the determination of crucial material properties, including elastic modulus, shear modulus, tensile strength, and fracture toughness. An established method involves the emulation of distributed geometric imperfections, utilizing real test specimen data as a basis. This approach allows for the accurate representation and assessment of the diversity and distribution of imperfections encountered in real-world scenarios. Utilizing defect data obtained from actual test samples enhances the model's realism and applicability. The sizes and configurations of these defects are employed as inputs in the modeling process, aiding in the prediction of structural behavior. It's worth noting that there is a dearth of experimental studies addressing the influence of geometric defects on the buckling behavior of cylindrical steel shells. In this particular study, samples featuring geometric imperfections were subjected to experimental buckling tests. These same samples were also modeled using Finite Element Analysis (FEM), with results corroborating the experimental findings. Furthermore, the initial geometrical imperfections were measured using digital image correlation (DIC) techniques. In this way, the response of the test specimens can be estimated accurately by applying the initial imperfections to FE models. After validation of the test results with FEA, a numerical parametric study was conducted to develop more generalized design recommendations for the stainless-steel shell structures with the initial geometric imperfection. While the load-carrying capacity of samples with perfect surfaces was up to 140 kN, the load-carrying capacity of samples with 4 mm defects was around 130 kN. Likewise, while the load carrying capacity of samples with 10 mm defects was around 125 kN, the load carrying capacity of samples with 14 mm defects was measured around 120 kN.

변화의 시대, 인문학적 변화 연구와 방법에 대한 고찰 (In a Time of Change: Reflections on Humanities Research and Methodologies)

  • 김덕삼
    • 대순사상논총
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    • 제49집
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    • pp.265-294
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    • 2024
  • 본고는 인문학적 연구 방법에 대한 의문에서 출발한다. 그 출발은 인문학을 기초로 하면서, 인문학에게 빛과 어둠을 안긴 변화에 집중하며, 그 변화를 탐구할 연구 방법에 논의의 초점을 맞춘 토대 위에 있다. 기존과 구분하여, 인문학의 역할이 과학과 다르게 회색 코뿔소를 예방하는 데 있다고 한다면, 그리고 과학의 제어하기 어려운 발전을 조정하는 데 인문학이 해야 할 역할이 있다면, 인문학이 지향해야 할 연구 방법은 어떤 것일지, 과학의 발전과 변화한 환경에 맞춰 다시 생각해 보고자 했다. 이에 본고에서는 인문학적 측면에서의 연구 방법에 대하여 논하였다. 먼저, 2장에서는 인문적 자산과 과학적 방법의 협업을 통하여, 축적된 인문적 자산의 활용과 과학적 방법의 지속적 도입을 주장하였다. 변화에 대한 예측은 공학과 자연과학에서는 매우 정밀하고, 그 파장이 크다. 하지만 이러한 분야에서는 거시적으로나 통합적으로 변화에 접근하기 어렵다. 거시적이거나 통합적인 것은 이들의 분야에서 정밀하지 않기에 현실적인 것을 다루는 학문에서 환영받지 못한다. 이는 주로 인문학이 담당했다. 과학이 정밀함에 집중한다면 인문학은 본질에 대한 물음에 집중한다. 오랜 역사 속에 변화의 끝은 다양했지만, 변화의 본질은 큰 차이가 없었기 때문이다. 이어서 3장에서는 변화한 환경, 인문학적 변화 연구 방법의 제안을 거론하며, 귀납적 변화 연구 방법의 검토와 제안 및 인문학적 변화 연구에 대한 몇 가지 제안을 하였다. 과거 인류가 축적한 인문적 데이터는 무궁하고, 활용 범위는 다양하다. 현재는 과학 발전의 결과물을 적극적으로 수용할뿐더러, 학문의 경계를 넘어, 체계적인 인문학적 접근과 활용을 적극적으로 모색하며, 과학적 방법과 인문적 자산의 교집합 지점, 여기서 그 해결의 실마리를 찾아야 할 것이다.

국민건강보험 발전방향 (Future Direction of National Health Insurance)

  • 박은철
    • 보건행정학회지
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    • 제27권4호
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    • pp.273-275
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    • 2017
  • It has been forty years since the implementation of National Health Insurance (NHI) in South Korea. Following the 1977 legislature mandating medical insurance for employees and dependents in firms with more than 500 employees, South Korea expanded its health insurance to urban residents in 1989. Resultantly, total expenses of the National Health Insurance Service (NHIS) have greatly increased from 4.5 billion won in 1977 to 50.89 trillion won in 2016. With multiple insurers merging into the NHI system in 2000, a single-payer healthcare system emerged, along with separation policy of prescribing and dispensing. Following such reform, an emerging financial crisis required injections from the National Health Promotion Fund. Forty years following the introduction of the NHI system, both praise and criticism have been drawn. In just 12 years, the NHI achieved the fastest health population coverage in the world. Current medical expenditure is not high relative to the rest of the Organization for Economic Cooperation and Development. The quality of acute care in Korea is one of the best in the world. There is no sign of delayed diagnosis and/or treatment for most diseases. However, the NHI has been under-insured, requiring high-levels of out-of-pocket money from patients and often causing catastrophic medical expenses. Furthermore, the current environmental circumstances of the NHI are threatening its sustainability. Low birth rate decline, as well as slow economic growth, will make sustainment of the current healthcare system difficult in the near future. An aging population will increase the amount of medical expenditure required, especially with the baby-boomer generation of those born between 1955 and 1965. Meanwhile, there is always the problem of unification for the Korean Peninsula, and what role the health insurance system will have to play when it occurs. In the presidential election, health insurance is a main issue; however, there is greater focus on expansion and expenditure than revenue. Many aspects of Korea's NHI system (1977) were modeled after the German (1883) and Japanese (1922) systems. Such systems were created during an era where infections disease control was most urgent and thus, in the current non-communicable disease (NCD) era, must be redesigned. The Korean system, which is already forty years old, must be redesigned completely. Although health insurance benefit expansion is necessary, financial measures, as well as moral hazard control measures, must also be considered. Ultimately, there are three aspects that we must consider when attempting redesign of the system. First, the health security system must be reformed. NHI and Medical Aid must be amalgamated into one system for increased effectiveness and efficiency of the system. Within the single insurer system of the NHI must be an internal market for maximum efficiency. The NHIS must be separated into regions so that regional organizers have greater responsibility over their actions. Although insurance must continue to be imposed nationally, risk-adjustment must be distributed regionally and assessed by different regional systems. Second, as a solution for the decreasing flow of insurance revenue, low premium level must be increased to an appropriate level. Likewise, the national reserve fund (No. 36, National Health Insurance Act) must be enlarged for re-unification preparation. Third, there must be revolutionary reform of benefit package. The current system built a focus on communicable diseases which is inappropriate in this NCD era. Medical benefits must not be one-time events but provide chronic disease management. Chronic care models, accountable care organization, patient-centered medical homes, and other systems that introduce various benefit packages for beneficiaries must be implemented. The reimbursement system of medical costs should be introduced to various systems for different types of care, as is the case with part C (Medicare Advantage Program) of America's Medicare system that substitutes part A and part B. Pay for performance must be expanded so that there is not only improvement in quality of care but also medical costs. Moreover, beneficiaries of the NHI system must be aware of the amount of their expenditure through a deductible payment system so that spending can be profiled and monitored. The Moon Jae-in Government has announced its plans to expand the NHI system; however, it is important that a discussion forum is created so that more accurate analysis of the NHI, its environments, and current status of health care system, can take place for reforming NHI.

Wearable Computers

  • Cho, Gil-Soo;Barfield, Woodrow;Baird, Kevin
    • 섬유기술과 산업
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    • 제2권4호
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    • pp.490-508
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    • 1998
  • One of the latest fields of research in the area of output devices is tactual display devices [13,31]. These tactual or haptic devices allow the user to receive haptic feedback output from a variety of sources. This allows the user to actually feel virtual objects and manipulate them by touch. This is an emerging technology and will be instrumental in enhancing the realism of wearable augmented environments for certain applications. Tactual displays have previously been used for scientific visualization in virtual environments by chemists and engineers to improve perception and understanding of force fields and of world models populated with the impenetrable. In addition to tactual displays, the use of wearable audio displays that allow sound to be spatialized are being developed. With wearable computers, designers will soon be able to pair spatialized sound to virtual representations of objects when appropriate to make the wearable computer experience even more realistic to the user. Furthermore, as the number and complexity of wearable computing applications continues to grow, there will be increasing needs for systems that are faster, lighter, and have higher resolution displays. Better networking technology will also need to be developed to allow all users of wearable computers to have high bandwidth connections for real time information gathering and collaboration. In addition to the technology advances that make users need to wear computers in everyday life, there is also the desire to have users want to wear their computers. In order to do this, wearable computing needs to be unobtrusive and socially acceptable. By making wearables smaller and lighter, or actually embedding them in clothing, users can conceal them easily and wear them comfortably. The military is currently working on the development of the Personal Information Carrier (PIC) or digital dog tag. The PIC is a small electronic storage device containing medical information about the wearer. While old military dog tags contained only 5 lines of information, the digital tags may contain volumes of multi-media information including medical history, X-rays, and cardiograms. Using hand held devices in the field, medics would be able to call this information up in real time for better treatment. A fully functional transmittable device is still years off, but this technology once developed in the military, could be adapted tp civilian users and provide ant information, medical or otherwise, in a portable, not obstructive, and fashionable way. Another future device that could increase safety and well being of its users is the nose on-a-chip developed by the Oak Ridge National Lab in Tennessee. This tiny digital silicon chip about the size of a dime, is capable of 'smelling' natural gas leaks in stoves, heaters, and other appliances. It can also detect dangerous levels of carbon monoxide. This device can also be configured to notify the fire department when a leak is detected. This nose chip should be commercially available within 2 years, and is inexpensive, requires low power, and is very sensitive. Along with gas detection capabilities, this device may someday also be configured to detect smoke and other harmful gases. By embedding this chip into workers uniforms, name tags, etc., this could be a lifesaving computational accessory. In addition to the future safety technology soon to be available as accessories are devices that are for entertainment and security. The LCI computer group is developing a Smartpen, that electronically verifies a user's signature. With the increase in credit card use and the rise in forgeries, is the need for commercial industries to constantly verify signatures. This Smartpen writes like a normal pen but uses sensors to detect the motion of the pen as the user signs their name to authenticate the signature. This computational accessory should be available in 1999, and would bring increased peace of mind to consumers and vendors alike. In the entertainment domain, Panasonic is creating the first portable hand-held DVD player. This device weight less than 3 pounds and has a screen about 6' across. The color LCD has the same 16:9 aspect ratio of a cinema screen and supports a high resolution of 280,000 pixels and stereo sound. The player can play standard DVD movies and has a hour battery life for mobile use. To summarize, in this paper we presented concepts related to the design and use of wearable computers with extensions to smart spaces. For some time, researchers in telerobotics have used computer graphics to enhance remote scenes. Recent advances in augmented reality displays make it possible to enhance the user's local environment with 'information'. As shown in this paper, there are many application areas for this technology such as medicine, manufacturing, training, and recreation. Wearable computers allow a much closer association of information with the user. By embedding sensors in the wearable to allow it to see what the user sees, hear what the user hears, sense the user's physical state, and analyze what the user is typing, an intelligent agent may be able to analyze what the user is doing and try to predict the resources he will need next or in the near future. Using this information, the agent may download files, reserve communications bandwidth, post reminders, or automatically send updates to colleagues to help facilitate the user's daily interactions. This intelligent wearable computer would be able to act as a personal assistant, who is always around, knows the user's personal preferences and tastes, and tries to streamline interactions with the rest of the world.

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<마법소녀 마도카☆마기카>에서 마녀에 관한 연구 (The Research on Witch in )

  • 윤영석
    • 만화애니메이션 연구
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    • 통권39호
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    • pp.1-25
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    • 2015
  • 일본 애니메이션에서 마법소녀 장르는 자주 등장하는 장르 중에 하나이다. 마법소녀 장르의 특징은 주인공 대부분이 나이가 어린 소녀이며, 이 소녀는 일반적인 소녀들과 달리 특수한 능력을 갖춘 캐릭터로 활약하는 점이다. 기존 일본 애니메이션 소비계층은 남성이었으나, 마법소녀 장르가 탄생하면서 여성들도 애니메이션 소비계층이 되었으며, 마법소녀 장르는 쇼죠 아니메가 탄생하게 되는 계기가 되었다. 최초의 쇼죠 아니메 및 마법소녀 장르로 1966년 <요술공주 세리>이었으며, <요술공주 세리> 방영 이후 큰 흥행을 거두게 된다. <요술공주 세리> 흥행에 따라 새로운 마법소녀 장르 애니메이션들이 TV에서 계속 방영하게 되었으며, 1982년 <요술공주 밍키>와 1992년 <미소녀전사 세일러 문>이 큰 흥행을 거두게 된다. <미소녀전사 세일러 문>의 경우 일본뿐만 아니라 전 세계적으로 흥행한 작품으로 2014년 TV 애니메이션 <미소녀전사 세일러 문 Crystal>로 방영되어 마녀소녀 장르는 일본 애니메이션 시청자로부터 오랫동안 사랑을 받아왔으며, 현재도 꾸준히 TV에서 방영되고 있다. 마법소녀 장르의 작품들을 살펴보면 주인공으로 등장하는 마법소녀들은 자신이 살고 있는 세상의 평화를 위해 싸우거나 또는 모험을 떠나거나 혹은 자신이 원하는 이상적인 목적을 위해 활동한다. 그러나 <마법소녀 마도카☆마기카>에서 등장하는 마법소녀들은 세상의 평화를 위해 활동하는 것이 아니라, 오히려 자신의 이익과 목적을 위해 활동하는 모습이 나온다. <마법소녀 마도카☆마기카>에서 마법소녀들은 마녀와 마녀의 사역마를 퇴치하지만, 그 결말은 매우 끔찍한 모습으로 나타난다. 마법소녀들이 퇴치하던 마녀는 본래 마녀가 아니었고, 과거에 활동하던 마법소녀들이었다. 마법소녀들은 과거에 마법소녀였던 마녀에 대해 마녀사냥을 하게 된 것이었다. 기존 마법소녀 장르에서 마법소녀와 마녀는 적대적인 관계였으나, <마법소녀 마도카☆마기카>는 마법소녀가 마녀로 되어야 하는 모순이 발생한다. 마녀는 처음부터 존재한 것이 아니라 누군가 마녀로 되어야 했고, 그녀들은 마녀사냥을 당해야만 했던 점에서 마녀사냥이 발생하는 이유는 퇴치당해야 할 대상이 처음부터 존재한 것이 아니라 존재했어야 했다. 따라서 본 논문은 마녀사냥에 대한 역사적 기원과 <마법소녀 마도카☆마기카>에서 마녀에 관한 연구로 통해 마녀의 존재에 대해 고찰하고자 하였다.

독일 경제아카이브즈의 형성과 유형 (The Formation and Types of Business Archives m Germany)

  • 김영애
    • 기록학연구
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    • 제8호
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    • pp.137-180
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    • 2003
  • The term 'Business Archives' is not familiar with us in our society. Some cases can be found that materials are collected for publishing the history of a firm on commemoration of some decades of its foundation. However, the appropriate management of these collected materials doesn't seem to be followed in most of companies. The Records and archives management is inevitable in order to maximize the utility of Information and knowledge in the business world. The interest in records management has been grown, especially in the fields of business management and information technology. However, the importance of business archives hasn't been conceived yet. And also no attention has been paid to the business archives as social resources and the responsibility of the society as a whole for their preservation. The company archives doesn't have a long history in Germany although the archives of the nation, the aristocracy, communes and churches have a long tradition. However the company archives of Krupps which was established in 1905, is regarded as the first business archives in the world, It means that Germany has taken a key role to lead the culture of business archives. This paper focuses on the process of the establishment of business archives in Germany and its characteristics. The business archives in Germany can be categorized in three types: company archives, regional business archives and branch archives. It must be noted here that each type of these was generated in the context of the accumulation of the social resources and its effective use. A company archives is established by an individual company for the preservation of and use of the archives that originated in the company. The holdings in the company archives can be used as materials for decision making of policies, reporting, advertising, training of employees etc. They function not only as sources inside the company, but also as raw sources for the scholars, contributing to the study of the social-economic history. Some archives of German companies are known as a center of research. A regional business archives manages materials which originated m commerce chambers, associations and companies in a certain region. There are 6 regional business archives in Germany. They collect business archives which aren't kept in a proper way or are under pressure of damage in the region for which they are responsible. They are also open to the public offering the sources for the study of economic history, social history like company archives, so that they also play a central role as a research center. Branch business archives appeared relatively late in Germany. The first one is established in Bochum in 1969. Its general duties and goals are almost similar with ones of other two types of archives. It has differences in two aspects. One is that the responsibility of the branch business archives covers all the country, while regional business archives collects archives in a particular region. The other is that a branch business archives collects materials from a single industry. For example, the holdings of Bochum archives are related with the mining industry. The mining industry-specialized Bochum archives is run as an organization in combination with a museum, which is called as German mine museum, so that it plays a role as a cultural center with the functions of exhibition and research. The three types of German business archives have their own functions but they are also closely related each other under the German Association of Business Archivists. They are sharing aims to preserve primary materials with historical values in the field of economy and also contribute to keeping the archives as a social resources by having feed back with the public, which leads the archives to be a center of information and research. The German case shows that business archives in a society should be preserved not only for the interest of the companies, but also for the utilities of social resources. It also shows us how business archives could be preserved as a social resource. It is expected that some studies which approach more deeply on this topic will be followed based on the considerations from the German case.