Spelling suggestions: "subject:"cofactor"" "subject:"cafactor""
1301 |
A Study of The Mixed-Mode Fracture of Molding Compound-Substrate Interface of IC PackageHuang, Ming-Yeong 22 August 2003 (has links)
Abstract
The interface crack of an IC package is easily existed under vibration, high temperature or collision. Its reliability will be reduced significantly for the existence of the crack. This study, therefore, is to investigate the fracture mechanism of the underfill/substrate interface with different crack length.
In this study, mixed mode fracture of the underfill/substrate interface, was investigated by single lap tension test. Based on the load-displacement curve, J integral, energy release rate and stress intensity factor were calculated. Moreover, the relationships among the stress intensity facto KI, KII and phase angle were also derived.
|
1302 |
The Relationships between Genetic Polymorphisms of Transforming Growth Factor-beta and the Susceptibility to Systemic Lupus ErythematosusYeh, Jeng-Jung 27 August 2003 (has links)
Systemic lupus erythematosus (SLE) is a complex autoimmune disease. Genetic factors playing an important role in disease susceptibility have long been suggested. Transforming growth factor-beta (TGF-beta) regulates differentiation and proliferation of T cells. Therefore, it could be a candidate gene for the development of systemic lupus erythematosus. Allelic polymorphisms in TGF-beta promoter region (-988, -800, -509) and in exon 1 (codon 10 and codon 25) have been suggested to associate with SLE susceptibility.
Allelic polymorphisms at positions -988, -800, -509, codon 10 and codon 25 on TGF-beta gene in 138 SLE patients and 182 healthy controls were analyzed in this study. TGF-beta polymorphisms were determined by PCR amplification and sequencing. With the previous polymorphic data of interleukin-4 (IL-4) -590 and interleukin-10 (IL-10) -819, associations of cytokine genotyoe and allele frequencies were analyzed. Results showed that there were differences in the genotype distribution of TGF-beta promoter region at position -509 and in the signal sequence at codon 10 (Leu¡÷Pro) between case and control groups in this study. However, no significant differences were found for all the TGF-beta polymorphisms. Allele frequency of IL-10 -819 was significantly associated with the susceptibility of SLE (p = 0.011). No significant associations were found between lupus nephritis with all the cytokine polymorphisms, but CNS involvement and lung involvement were associated with the polymorphisms studied in this research.
|
1303 |
NoneChen, Chu-ping 14 June 2004 (has links)
None
|
1304 |
Influence of traffic exhausts on the air quality in a street canyon¡GA case study of measurement results in Fung-Shan City, Kaohsiung CountyWen, Chi-Shemg 19 June 2004 (has links)
Spatial distributions of gaseous pollutants CO, NOx, and SO2 in a street canyon in Fung-Shan, Kaohsiung County were measured. The street runs west-to-east with two lanes in a single direction: traffic flows only from west to east. The street canyon is 60 m long (= L) and 20 m wide (= W). The heights of the five-story buildings on both sides of the street are about 16 m (= H). Therefore, the street canyon has an aspect ratio AR (= H/W) = 0.8, and a length to width ratio L/H = 3. Air was sampled on site on three consecutive days, 3 September to 5 September, in 2003. The sampling period were 20 h long, from 00:00 to 19:00 on September 4, but covered only the two rush hours, 07:00-10:00 and 16:30-20:00, on the other two days. Traffic emissions were also estimated using available emission factors from TANEEB (1992).
Results show that motorcycles are dominant vehicle in the street. Emission estimations indicate that motorcycle contributed to about 75% of CO emission, automobiles contributed about 80% of NOx emissions, while motorcycles and automobiles each contributed about 50% of SO2 emissions. Variations of traffic emissions generally follow traffic flow rates, indicating reasonable estimations of traffic emissions.
When wind blows perpendicularly to the street canyon, air pollutants tend to accumulate in the leeward side. For example, concentration of CO in the leeward side is about two times that in the windward side. Generally, concentrations of air pollutants decrease with height, about 10% to 20% reduction in concentration, particularly noticeable in the leeward side. Results also show that, on leeward side, concentrations of air pollutants in the corridor were lower than those outside the corridor, being about 53.3% difference in CO concentration. However, on windward side, concentrations of air pollutants in the corridor were higher than those outside the corridor, being about 100% difference in NO2 concentration.
Keywords: Street Canyon, Mobile Sources, Air Quality, Emission Factor.
|
1305 |
The key successful factor research of pet industry --- to take dog market as an example.Lin, Chi-Shun 22 July 2004 (has links)
This research is to adopt the quality quest research method, interviewing through the depth and the sorting and researches of the pet industry related development process, regard core resource theories as the foundation, look for to be subjected to the management key of visiting the individual cases to succeed factor, to understand its competitive advantage to produce. In addition, also consult and deliberate now before pet industry characteristic and actual situation condition, try to induce and identify the key succeeds factor of the relation between control and management results performance.
This research is final to acquire as follows what time conclusion:
(1) Pet already camp key success the characteristic of the factor is affected by the core resource
(2) The key that this research have to pay success the factor account six, including:" Block advantage"," management type"," store atmosphere"," sell the thoroughfare choice"," enter the goods mode" and" executive profession degree".
(3) When various keys succeed the factor can reach the certain level, to conduct the good and bad of the results to have the influence of absolute, and the management results of the pet industry then expresses in four factors in" finance results"," earning satisfaction"," customer satisfaction" and" technique satisfaction".
|
1306 |
Research on the strategy for small and medium enterprises¡¦ model transitionSU, KUO-TSAIR 17 August 2004 (has links)
^¤åºKn(Abstract)
Since the government adopted the ¡§ Patience and Goodwill¡¨ policy to decelerate the ongoing industries¡¦ emigration, it inevitably results the deterioration on Taiwan political and economic environments and of being prone to the world factory ¡VChina. We could see that small to medium size companies are facing the dilemma- emigrating to China or stay. All industries in Taiwan have been forced to upgrade either for survive or business longevity
This case study based on the competitive advantage theory and it evaluate the strategies incurred during small to medium size companies¡¦ internal upgrading; moreover, further identify its causes, directions and the condition within the whole process to find out the confronting and solution
The goal is to find the way out, structure, and module. Herewith provide clear explanation and examination in order to further formulating for subject companies under circumstances of operating and business expansion. Meanwhile, the re-examination and adjustment of the formula either as being references and instruction for subject companies or fundament for future research after long-term operation.
In this research analysis, (1) analyses external fastener industry environment and classify the success factors. (2) Analyses the subject company internal structure and characters to identify its key factor to success in the industry, (3) Marketing analysis. By applying the ¡§ Five forces framework and ¡§ SWOT¡¨ in order to- Firstly, realize the potential market opportunity and expanding space; Secondly, try to identify its core competency and competitive advantage. Thirdly, construct its sustainable competitive advantage to maintain its strength and finally lead to development and benefited prolong operation in the market place.
The disclose of study:
(1) Most of traditional industries have been on the progress of upgrading
(2) Most of upgrading traditional manufacturers/suppliers have complete the basic operational upgrading.
(3) Observing two tips from the smile curve, the early adopters have been benefited from upgrading changes.
(4) The research subject ¡VS company, from a small size trading company to nowadays a multinational company, the continuous upgrading by adoption of positioning strategy is similarly develop toward two sides of the curve and the effects has been appealed.
All above findings support there should have a model of best practice be generated for all the subject companies or similar industry reference
Key words: sustainable competitive advantages, key success factors, key survival factor.
|
1307 |
The Performance Measurement of the Sub Banks for the Financial Holding Company in TaiwanHo, Chia-hao 28 June 2005 (has links)
none
|
1308 |
The Key Success Factors of Technology Innovation Process of 3C Product-based Housing Material ManufacturerYu, Hui-fa 30 June 2005 (has links)
Computer products ¡ACommunication products¡Aand Consumer Electronics products are the three main categories of 3C industry . With the trends of technology innovation, consumer¡¦s preference changes, and price¡¦s fluctuation, 3C products now tend to get slimmer, smaller, more easily portable, delicate, and fashionable. Moreover, advanced functions and environmental protection are also the important topics that 3C industry is facing. Accordingly, The housing parts of 3C products need to match up every inch with the above. This study focuses on the key success factors of technology innovation process of 3C housing case industry.
In order to verify and refine the fist outcomes of AHP (Analytic Hierarchy Process) analysis, this study did the second AHP analysis and adopts the second outcomes as the conclusion. They are as follows:
1. These are the priorities of the four factors on the second layer: ¡§Technology Innovation Strategy¡¨ goes first, ¡§Organizational System and Culture¡¨ second, ¡§Source of Technology Innovation¡¨ third, and ¡§Investment of Technology Innovation¡¨ last.
2. The top 5 priorities of the sixteen criteria on the third layer are the below: ¡§Active Interaction with Customer¡¦s Needs¡¨ goes first, ¡§R&D Expenditures¡¦ Proportion of Sales¡¨ second, ¡§Patent Technology of Self ¡VResearch and Innovation¡¨ third, ¡§Organizational Culture of Good Communication and Flexible System¡¨ fourth, and ¡§Periodical Participation in International Technological Merchandise Fair¡¨ fifth.
|
1309 |
Investingation of the Characteristics of Polycyclic Aromatic Hydrocarbons in the Atmosphere in KaohsiungLu, Chu-hsiao 23 June 2006 (has links)
The high-volume air sampling (PS-1) and micro-orifice uniform deposit impactor (MOUDI) were used to measure the concentrations of polycyclic aromatic hydrocarbons (PAHs) in the atmosphere for four seasons at Zuoying and Siaogang in Kaohsiung city, together with the size distributions. Also, the CMB (Chemical Mass Balance) receptor model was employed to determine the potential sources of PAHs.
The results show that the highest concentrations of PAHs occurred in winter, being 143.9 ng/m3 and 182.9 ng/m3 at Zuoying and Siaogang, respectively; while the lowest concentrations of PAHs occurred in summer, being 81.4 ng/m3 and 95.2 ng/m3. The low-weight PAHs in the two sites were abundant in gaseous phase, being 55.89 - 95.89 % and 67.07 - 96.61 % at Zuoying and Siaogang, respectively. Meanwhile, the high-weight PAHs were almost present in particulate phase, being 55.24 - 83.50 % and 46.87 - 77.26 % at Zuoying and Siaogang, respectively.
The sizes of 50th percentile of cumulative size distribution, d50 of Zuoying and Siaogang were 0.89 £gm and 0.35 £gm, respectively. Hence, most atmospheric PAHs existed in fine-particle ranges (¡Õ1.0£gm).
The results of by CMB receptor modeling indicated that the major sources of pollution was exhaust emission (49 - 62 %) in Zuoying, and was burning source (49 - 64 %) in Siaogang.
|
1310 |
Parallel Operation of Modular Power Factor Correctors with Flyback ConvertersHsiao, Ying-Nan 03 July 2006 (has links)
To fulfill the requirements of the operation in a wide power range, a parallel configuration with modular power factor correctors (PFCs) is proposed. Each PFC module is composed of a bridge-rectifier, a fly-back converter and associated passive filters. The fly-back converter is independently operated at a fixed frequency with a discontinuous inductor current. This allows the modules to achieve a high power factor and to regulate the output power with simple control. With the same duty-ratio and frequency, the total current will be distributed equally to each operating module without complex current sharing control. The operating modules are equally phase-shifted to take the advantages of the continuous current mode when operated at a higher power.
Experiments were conducted to achieve a power rating of 1 kVA by operating 10 PFC modules in parallel. The duty-ratio of the operating modules is controlled by a micro-controller to regulate the output power in accordance with the load requirement. A complex programmable logic device (CPLD) is used for phase-shifting. All modules are operated in turn to share the operating cycles in a more equal manner. Experimental results demonstrate the parallel configuration can achieve the expected performances.
|
Page generated in 0.0444 seconds