http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Restructuring and Performance among Japanese Firms after Prudential Policy Reform
Dick Beason,Ken Gordon,Vikas Mehrotra,Akiko Watanabe 강원대학교 경영연구소 2010 Asia-Pacific Journal of Business Vol.1 No.1
After over a decade of sluggish economic growth accompanied by massive fiscal stimulus in the 1990s, it remains an open question whether and how Japanese firms have restructured their operations, and whether these efforts have borne any fruit. Using a randomly selected sample of 300 firms from the Tokyo Stock Exchange, we collect all restructuring announcement in the FY 2000-2001 (April 2000-March 2002) period. Our results are striking in that while we find that firms engaging in restructuring of various sorts display improved earnings in the period following the restructuring announcement, shareholders do not appear to benefit at the time of the restructuring announcements.
Dick Lehman 한국도자학회 2010 한국도자학연구 Vol.7 No.1
The most impressive and timeless examples of ceramic history are not merely awe-inspiring because of their age, or the technique used. In my article I attempt to reveal the deeper agendas of the people who crafted their art so many years ago, and what motives they had at that time, which could produce pieces of lasting merit. What were they thinking? What were their political affinities? How did they live? In contemplation of this, how can we still learn from them and improve and imbue our own works with the timelessness that they have been so successful in doing? It is indeed something more than simply technique or age that makes ceramic art moving.
Multiple Sink Nodes to Improve Performance in WSN
Dick, Mugerwa,Alwabel, Mohammed,Kwon, Youngmi Korea Multimedia Society 2019 멀티미디어학회논문지 Vol.22 No.6
Wireless Sensor Networks (WSNs) consist of multiple tiny and power constrained sensors which use radio frequencies to carry out sensing in a designated sensor area. To effectively design and implement reliable WSN, it is critical to consider models, protocols, and algorithms that can optimize energy consumption of all the sensor nodes with optimal amount of packet delivery. It has been observed that deploying a single sink node comes with numerous challenges especially in a situation with high node density and congestion. Sensor nodes close to a single sink node receive more transmission traffic load compared to other sensors, thus causing quick depletion of energy which finally leads to an energy hole and sink hole problems. In this paper, we proposed the use of multiple energy efficient sink nodes with brute force technique under optimized parameters to improve on the number of packets delivered within a given time. Simulation results not only depict that, deploying N sink nodes in a sensor area has a maximum limit to offer a justifiable improvement in terms of packet delivery ratio but also offers a reduction in End to End delay and reliability in case of failure of a single sink node, and an improvement in the network lifetime rather than deploying a single static sink node.
Dick, Robert E.,Yoon, Jeong Whan Elsevier 2018 International journal of solids and structures Vol.151 No.-
<P><B>Abstract</B></P> <P>Material characterizations for plasticity and fracture have been conducted from uniaxial tensile tests, bi-axial bulge test, and disk compression test for a beverage can AA3104-H19 material. The results from the experimental tests are used to determine material coefficients for the Yld2004-18p model (). Finite element simulations are developed to evaluate the predicted earing profile. It is shown that the Yld2004-18p model is capable of accurately predicting the complex earing profile. Excellent agreement with the experimental data for eight ears exhibited in AA3014-H19 is achieved using the Yld2004-18p constitutive model. Further mechanical tests are also conducted on the AA3104-H19 to generate fracture data under different stress triaxiality conditions. Tensile tests are performed on the samples with a central hole and notched specimens to achieve tensile and plane-strain conditions. A specially designed torsion test of a double bridge specimen is conducted to generate the points near pure shear conditions. The Nakajima test is also utilized to produce a bi-axial tension condition. The data from the experiments is used to generate the fracture locus in the principal strain space. Mapping from the principal strain space to stress triaxiality space, principal stress space, and Polar Effective Plastic Strain (PEPS) space is accomplished for a general yield function. Finite element modeling is used to validate the fracture diagram in the polar space. A model of a hole expansion during cup drawing demonstrates the robustness of the PEPS fracture theory for a condition with a highly anisotropic material and accurately predicts the direction for onset of failure.</P>