• Title/Summary/Keyword: Behrens

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Modifications of the Weighted Mack-Wolfe Umbrella Tests for a Generalized Behrens-Fisher Problem

  • Park, Hee Moon
    • Journal of Korean Society for Quality Management
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    • v.21 no.2
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    • pp.179-193
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    • 1993
  • Modifications of t he weighted Mack-Wolfe tests are proposed for both cases when the peak of umbrella is known and unknown. The modified weighted Mack-Wolfe tests are exactly distribution-free when the continuous populations have the same shape. For the case of peak-known umbrella alternatives, the modified weighted Mack-Wolfe tests remain asymptotically distribution-free when the continuous populations are symmetric, but not necessarily with the same shape. For the case of peak-unknown umbrella alternatives, the maximum of standardized modified weighted Mack-Wolfe tests with peak-known umbrella alternatives was used. The simulation results show that the modified weighted Mack-Wolfe tests are more recommended than the modified Mack-Wolfe tests for various patterns.

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Fatigue of tubular steel lighting columns under wind load

  • Peil, U.;Behrens, M.
    • Wind and Structures
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    • v.5 no.5
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    • pp.463-478
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    • 2002
  • Lighting and traffic signal columns are mainly stressed by excitation due to natural, gusty wind. Such columns typically have a door opening about 60 cm above ground level for the connection of the buried cable with the column's electric system. When the columns around this notch are inadequately designed, vibrations due to gusty winds will produce considerable stress amplitudes in this area, which lead to fatigue cracks. To give a realistic basis for a reliable and economic design of lighting and traffic signal columns, a number of experimental and theoretical investigations have been made. The proposed design concept allows the life of such columns to be assessed with a satisfactory degree of accuracy.

A SECURITY ARCHITECTURE FOR THE INTERNET OF THINGS

  • Behrens, Reinhard;Ahmed, Ali
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.11 no.12
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    • pp.6092-6115
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    • 2017
  • This paper demonstrates a case for an end-to-end pure Application Security Layer for reliable and confidential communications within an Internet of Things (IoT) constrained environment. To provide a secure key exchange and to setup a secure data connection, Transport Layer Security (TLS) is used, which provides native protection against replay attacks. TLS along with digital signature can be used to achieve non-repudiation within app-to-app communications. This paper studies the use of TLS over the JavaScript Object Notation (JSON) via a The Constrained Application Protocol (CoAP) RESTful service to verify the hypothesis that in this way one can provide end-to-end communication flexibility and potentially retain identity information for repudiation. As a proof of concept, a prototype has been developed to simulate an IoT software client with the capability of hosting a CoAP RESTful service. The prototype studies data requests via a network client establishing a TLS over JSON session using a hosted CoAP RESTful service. To prove reputability and integrity of TLS JSON messages, JSON messages was intercepted and verified against simulated MITM attacks. The experimental results confirm that TLS over JSON works as hypothesised.

A Study on the Formative Years of Le Corbusier -La Chaux-de-Fonds, 1887-1917- (르 꼬르뷔제의 형성기에 관한 연구 - 라쇼드퐁 시절, 1887-1917 -)

  • Ryu, Jeon-Hee
    • Journal of architectural history
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    • v.7 no.3 s.16
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    • pp.151-170
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    • 1998
  • This study is about Le Corbusier's early years of loarning and training at La Chaux-de-Fonds. It is an attempt to show how Le Corbusier's groundwork was laid which characterize his work throughout the life. Charles Edouard Jeanneret was trained as a watch engraver and wished to be a painter. C. L'Eplattenier was to play a decisive role in shaping the young introspective boy's future. He encouraged Jeanneret's habit of the close study and observation of nature. Jeanneret was not the product of an established school, but instead made the unusual choice of educating himself. He found two indispensible sources of inspiration in study the past and in contemplating nature. His four years of self-education consisted of extensive reading, summer travels and winter layovers in larger cities-Vienna, Paris, Berlin-while sketching in museums or apprenticing local architects-Pellet, Behrens-. All these impressions then blended together to become part of a comprehensive source book of knowledge and imagination of the later Le Corbusier. A largely self-taught man, he never stopped making notes, drawing and writing, always aspiring to a clearer understanding of the meaning and underlying principles of objects and architecture. Jeanneret's five villas in La Chaux-de-Fonds are barometers which show the sequences of his development and change as an architect. In 1917, being thirty, he uprooted himself from his hometown to get a wider range of opportunities and moved to Paris. By that time Jeanneret was almost ready to blossom into Le Corbusier It was during this formative years of his life that Le Corbusier established the working method, mind-set and philosophical basis that determined the course of an architect in the making.

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A Cognitive Study on Jeong in Korean and Amae in Japanese (한국의 '정(情)'과 일본의 '아마에(甘え)'에 대한 인지적 고찰)

  • Kim, Myung-Hee
    • Cross-Cultural Studies
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    • v.27
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    • pp.471-496
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    • 2012
  • Since Takeo Toi's discussion in The Anatomy of Dependence (1973), the concept of amae has generated considerable interest in the fields of psychology, anthropology, communication and other fields. However, there have been few agreements on the definition and functions of amae (Behrens, 2004). Furthermore, it has rarely drawn interest from linguists in general and has rarely been discussed in the context of social interaction. This study aims to examine the concept of amae in Japanese and the corresponding phenomena in Korean, and attempts to explore the similarities and differences between them. The prototype of the amae relationship is the mother-infant relationship (Doi,1973). Even an adult can assume the role of a baby, showing his or her need for dependence on others and expecting to be accepted. It turns out that amae-like phenomena frequently occur in everyday life in Korea as well (Lee, 1982). There is no single term for the concept, but it can be translated in many different ways in Korean, for example, aykyo, ayang, ungsek, erikwang, etc. It can have either positive or negative connotations depending on the situation. It seems that the psychological system that causes dependent behaviors such as ungsek in Korea is cheong, one of the key terms characterizing the Korean culture. Cheong, like amae, starts in the mother-infant relationship extending to familial and to other relationships. A corpus-based analysis shows that cheong is conceptualized as gluing people together, growing over time, and also potentially fatal because it assumes illogical, uncalculated, and personal relationships. In conclusion, unlike some Japanese scholars' claim that amae is the Japanese concept that exists only in Japan, it seems that similar phenomena do exist in Korea as well, but that Korean has no single term corresponding to amae in Japanese. It seems that cheong can be posited in Korean as the inner emotional system that makes amae-like behaviors possible, and that there is not single term, but many, designating the behaviors, possibly because the behaviors have a negative connotation and are not encouraged in Korean society.

Effect of dietary supplementation with Spirulina on the expressions of AANAT, ADRB3, BTG2 and FASN genes in the subcutaneous adipose and Longissimus dorsi muscle tissues of purebred and crossbred Australian sheep

  • Kashani, Arash;Holman, Benjamin William Behrens;Nichols, Peter David;Malau-Aduli, Aduli Enoch Othniel
    • Journal of Animal Science and Technology
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    • v.57 no.3
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    • pp.8.1-8.8
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    • 2015
  • Background: The demand for healthy, lean and consistent meat products containing low saturated fatty acid content and high quality polyunsaturated fatty acids (PUFA), especially long-chain (${\geq}C_{20}$) omega-3 PUFA, has increased in recent times. Fat deposition is altered by both the genetic background and dietary supplements, and this study aimed to assess the effect of dietary Spirulina supplementation levels on the mRNA expression patterns of genes controlling lipid metabolism in the subcutaneous adipose tissue (SAT) and Longissimus dorsi (ld) muscle of Australian crossbred sheep. Methods: Twenty-four weaned lambs belonging to four breeds under the same management conditions were maintained on ryegrass pasture and fed three levels of Spirulina supplement (control, low and high). In terms of nutrient composition, Spirulina is a nutrient-rich supplement that contains all essential amino acids, vitamins and minerals. It also is a rich source of carotenoids and fatty acids, especially gamma-linolenic acid (GLA) that infer health benefits. After slaughter, subcutaneous adipose tissue (SAT) and ld samples were subjected to mRNA extraction and reverse transcription using quantitative polymerase chain reaction (RT-qPCR) to assess the mRNA expression levels of the Aralkylamine N-acetyltransferase (AANAT), Adrenergic beta-3 receptor (ADRB3), B-cell translocation gene 2 (BTG2) and Fatty acid synthase (FASN) genes, which are associated with lipid metabolism. Results: Both low and high Spirulina supplementation levels strongly up-regulated the transcription of all the selected genes in both SAT and ld tissues (mostly in the subcutaneous adipose), but sheep breed and sex did not influence the gene expression patterns in these tissues. Conclusions: The evidence indicates that high Spirulina supplementation level resulted in a decrease in intramuscular fat content in Australian purebred and crossbred sheep due to the enhanced production of melatonin in sheep muscle tissues and strong up-regulation of mRNA expression of BTG2 in SAT which negatively affected fat deposition. In contrast, low Spirulina supplementation level strongly up-regulated the ADRB3 and FASN genes responsible for fat production. These findings are consistent with the observed phenotypic data suggesting that low Spirulina supplementation level can increase lamb production, with higher long-chain PUFA content.