Pushing the Design Envelope with CAE

1998 ◽  
Vol 120 (12) ◽  
pp. 72-73 ◽  
Author(s):  
Marc Halpern

This article focuses on the growing role of computer-aided engineering programs for the design of electronic packaging. While computer-aided engineering (CAD) clearly offers the potential to improve products and cut manufacturing costs and time, those who have adopted CAE are facing significant challenges in making it work. Historically, CAE has failed to deliver results fast enough to exert a major influence on design decisions. Instead, corporations have used finite-element results to validate previously determined designs. But because design changes later can cost more than correct up-front decisions, CAE simulation can offer cash benefits when it has a role in the initial stages of product design. Technical staff leaders must translate objectives into CAE work that is efficient and effective. The status of the measurements must always be available, in order to monitor progress.

1988 ◽  
Vol 16 (4) ◽  
pp. 417 ◽  
Author(s):  
A Wolfenden ◽  
A Staros ◽  
RS Schwartz

Author(s):  
L.J. Chen ◽  
Y.F. Hsieh

One measure of the maturity of a device technology is the ease and reliability of applying contact metallurgy. Compared to metal contact of silicon, the status of GaAs metallization is still at its primitive stage. With the advent of GaAs MESFET and integrated circuits, very stringent requirements were placed on their metal contacts. During the past few years, extensive researches have been conducted in the area of Au-Ge-Ni in order to lower contact resistances and improve uniformity. In this paper, we report the results of TEM study of interfacial reactions between Ni and GaAs as part of the attempt to understand the role of nickel in Au-Ge-Ni contact of GaAs.N-type, Si-doped, (001) oriented GaAs wafers, 15 mil in thickness, were grown by gradient-freeze method. Nickel thin films, 300Å in thickness, were e-gun deposited on GaAs wafers. The samples were then annealed in dry N2 in a 3-zone diffusion furnace at temperatures 200°C - 600°C for 5-180 minutes. Thin foils for TEM examinations were prepared by chemical polishing from the GaA.s side. TEM investigations were performed with JE0L- 100B and JE0L-200CX electron microscopes.


2018 ◽  
Vol 15 (1) ◽  
pp. 55-72
Author(s):  
Herlin Hamimi ◽  
Abdul Ghafar Ismail ◽  
Muhammad Hasbi Zaenal

Zakat is one of the five pillars of Islam which has a function of faith, social and economic functions. Muslims who can pay zakat are required to give at least 2.5 per cent of their wealth. The problem of poverty prevalent in disadvantaged regions because of the difficulty of access to information and communication led to a gap that is so high in wealth and resources. The instrument of zakat provides a paradigm in the achievement of equitable wealth distribution and healthy circulation. Zakat potentially offers a better life and improves the quality of human being. There is a human quality improvement not only in economic terms but also in spiritual terms such as improving religiousity. This study aims to examine the role of zakat to alleviate humanitarian issues in disadvantaged regions such as Sijunjung, one of zakat beneficiaries and impoverished areas in Indonesia. The researcher attempted a Cibest method to capture the impact of zakat beneficiaries before and after becoming a member of Zakat Community Development (ZCD) Program in material and spiritual value. The overall analysis shows that zakat has a positive impact on disadvantaged regions development and enhance the quality of life of the community. There is an improvement in the average of mustahik household incomes after becoming a member of ZCD Program. Cibest model demonstrates that material, spiritual, and absolute poverty index decreased by 10, 5, and 6 per cent. Meanwhile, the welfare index is increased by 21 per cent. These findings have significant implications for developing the quality of life in disadvantaged regions in Sijunjung. Therefore, zakat is one of the instruments to change the status of disadvantaged areas to be equivalent to other areas.


2020 ◽  
Vol 5 ◽  
pp. 7-11
Author(s):  
Malek Abdel-Shehid

Calypso is a popular Caribbean musical genre that originated in the island nation of Trinidad and Tobago. The genre was developed primarily by enslaved West Africans brought to the region via the transatlantic slave trade during the seventeenth and eighteenth centuries. Although West-African Kaiso music was a major influence, the genre has also been shaped by other African genres, and by Indian, British, French, and Spanish musical cultures. Emerging in the early twentieth century, Calypso became a tool of resistance by Afro-Caribbean working-class Trinbagonians. Calypso flourished in Trinidad due to a combination of factors—namely, the migration of Afro-Caribbean people from across the region in search of upward social mobility. These people sought to expose the injustices perpetrated by a foreign European and a domestic elite against labourers in industries such as petroleum extraction. The genre is heavily anti-colonial, anti-imperial, and anti-elitist, and it advocated for regional integration. Although this did not occur immediately, Calypsonians sought to establish unity across the region regardless of race, nationality, and class through their songwriting and performing. Today, Calypso remains a unifying force and an important part of Caribbean culture. Considering Calypso's history and purpose, as well as its ever-changing creators and audiences, this essay will demonstrate that the goal of regional integration is not possible without cultural sovereignty.


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