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ISO26262 impact on vehicle level variant handling for embedded systems testingSun, Gao January 2014 (has links)
ISO 26262 is an international standard about functional safety published on 2011, aiming to avoid failure in safety related electrical and electronic systems in passenger cars. A corresponding standard for heavy vehicles is expected to be published in a few years’ time. In order to be well-prepared, the heavy vehicle manufacturer Scania decides to start investigating what impact ISO26262 can bring. At Scania, modularization is one of the most important features of the product, which means several modules can be combined together into a vehicle in a variety of ways, so that highly configurable products can be provided for the customer. Huge number of unique module combinations bring big challenges to systems integration testing department REST/I in Scania because of limited time and resource availability for testing. Nowadays, people in REST/I deal with the variant mainly based on human experience, which is quite difficult to obtain the exact complete variant information and concrete testing coverage. In order to fulfill the requirement related with variant handling in ISO26262, better variant handling methods are proposed in this thesis, which can mainly be divided into two parts: method for variant generating and method for configuration selecting. To simplify the implementation work of this thesis, only the ECU components are focused on (other components such as sensors are ignored), and the risk-based feature is not added to the configuration selecting. Variant generating is to generate variant information from Allocation Element Diagram in Sesamm database systematically. According to the generated variant information, the configuration can be selected automatically by using Greedy best-first-search algorithm based on the proposed testing coverage metrics. Since all these work can be done automatically by computer, REST/I not only can work more efficiently by saving a lot of labor resource, but also can avoid mistakes caused by anthropogenic factors. However, not all the data needed for the automation are existed today, so the suggestions for consummation of the data to be ready for implementing the proposed methods are also mentioned in this thesis.
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Factors that affect the share price index of Taiwan's solar energy industry¡Ðthe crude oil prices and industry scaleDeng, Yu-chi 19 June 2012 (has links)
This paper discusses the factors that affect the share price index of Taiwan solar power industry, crude oil prices and the size of the solar manufacturers in Taiwan and Taiwan's market index into the consideration. In addition, considering whether the policies implemented by our government would change the solar industry in Taiwan¡¦s stocks structural .Using the correlation coefficient, the unit root test, Chow test, cointegration test , vector error correction model, impulse response and forecast error variance decomposition to explore their relationship respectively. The study period starts from January 3,2002 until December 30,2011, a total of 2450 daily data for empirical analysis.
By Chow test , we find that there is no structural change of solar stock index after the implementation of the domestic policies. Three international crude oil prices and the total share capital of solar manufacturers in Taiwan and the Taiwan solar power industry stocks index has co-integration relationship, means the three international crude oil prices and solar companies total share capital of solar stock index has a long-run equilibrium relationship. By the error correction model of West Texas crude oil price of Brent crude oil prices, the total share capital of the solar companies in Taiwan and Taiwan solar stock index mutual interaction, and the relationship between changes in Taiwan's solar stock price index and Brent crude oil price, West Texas crude oil prices and the total manufacturers of solar energy manufacturers in Taiwan¡¦s share capital are positive, besides, I also found a positive relationship in the impulse response.
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The determinants of Phalaenopsis orchid export from Taiwan to China.Wu, Pei-Yu 02 July 2012 (has links)
This paper is based on international trade between Taiwan and China intently. This purpose of this paper is to explore economic factors on the volume of Phalaenopsis orchid export from Taiwan to China from 1998 to 2011 . This paper will firstly set four influence variables, the previous export, the China's GDP, the exchange rate and the tariff . Then, this paper will exam those variables by using Unit Root test and the Vector Autoregressive (VAR) method in an empirical analysis.
After the examination by Unit Root test, the result shows that all the variables appear to be stationary in the first difference. Furthermore, in Chow test, the empirical results indicate that no structural change occurred before and after the first phase of tariff reduction under ECFA. In co-integration test, those variables are co-integrated. In VAR model, China¡¦s GDP, the exchange rate, and the tariff have impact on the volume of the imports from Taiwan to China in different degrees as well.
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Using foreign currencies to explain the nominal exchange rate of RandRonghui, Wang January 2007 (has links)
Includes abstract.
Includes bibliographical references.
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Differences in Performance Between Minimally Brain-Injured and Normal Children as Measured by the "Birch-Belmont Auditory-Visual Integration Test"Glass, Daniel J. 12 1900 (has links)
The problem with which this study was concerned involved the identification of minimally brain-injured children. The performance on the "Birch-Belmont Auditory-Visual Integration Test" by twenty-five minimally brain-injured students was compared to the performance of twenty-five non-brain-injured children. It was found that when ages and I.Q. scores were not significantly different, and when sexes were approximately proportionate, the M.B.I. children scored significantly lower than did the non-brain-injured children. While it was indicated that the minimally brain-injured children perform less adequately on auditory-visual integration, no comparison of intrasensory and intersensory functioning was made. It was suggested that the test not be employed for sole determination of minimal brain injury, but that it may be used as a screening device quite appropriately.
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Financial development and economic growth : a comparative study between Cameroon and South AfricaDjoumessi, Emilie Chanceline Kinfack 04 1900 (has links)
The causal relationship between financial development and economic growth is a
controversial issue. For developing countries, empirical studies have provided mixed
result. This study seeks to empirically explore the relationship and the causal link
between financial development and economic growth in two sub-Saharan African
countries between 1970 and 2006. The empirical investigation is carried out using time
methods and the five most commonly used indicators of financial development in the
literature. However, the causal relationship was carried out using two different methods
which are the autoregressive distributed lag bounds testing (ARDL) and the vector error
correction model (VECM). Using this above methodology the study first found that in
both countries there is a positive and long-term relationship between all the indicators of
financial development and economic growth which was proxied by the real per capita
GDP. With respect to the causality test, the two methods used provide mixed results
especially in South Africa. In Cameroon the study found that financial development
causes economic growth using the two methods, whereas in South Africa economic
growth causes financial development when the VECM method is used, while there is an
independence relationship between the two variables in South Africa when using ARDL. / Economics / M.Comm. (Economics)
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Financial development and economic growth : a comparative study between Cameroon and South AfricaDjoumessi, Emilie Chanceline Kinfack 04 1900 (has links)
The causal relationship between financial development and economic growth is a
controversial issue. For developing countries, empirical studies have provided mixed
result. This study seeks to empirically explore the relationship and the causal link
between financial development and economic growth in two sub-Saharan African
countries between 1970 and 2006. The empirical investigation is carried out using time
methods and the five most commonly used indicators of financial development in the
literature. However, the causal relationship was carried out using two different methods
which are the autoregressive distributed lag bounds testing (ARDL) and the vector error
correction model (VECM). Using this above methodology the study first found that in
both countries there is a positive and long-term relationship between all the indicators of
financial development and economic growth which was proxied by the real per capita
GDP. With respect to the causality test, the two methods used provide mixed results
especially in South Africa. In Cameroon the study found that financial development
causes economic growth using the two methods, whereas in South Africa economic
growth causes financial development when the VECM method is used, while there is an
independence relationship between the two variables in South Africa when using ARDL. / Economics / M.Comm. (Economics)
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TELEMETRY IN THEATER MISSILE DEFENSE DEVELOPMENTToole, Michael T. 10 1900 (has links)
International Telemetering Conference Proceedings / October 17-20, 1994 / Town & Country Hotel and Conference Center, San Diego, California / Since the Gulf War, there has been significant interest in Theater Missile Defense
(TMD) resulting in funding growth from tens of millions of dollars at the time of the
Gulf War to $1.7 Billion in 1994. The Ballistic Missile Defense Organization
(BMDO) has developed a Theater Missile Defense test and evaluation program that
will assess technological feasibility and the degree to which system functionality and
performance meet technical and operational requirements. The complexity of the
TMD program necessitates a comprehensive test program which includes flight
testing, ground testing, and modeling and simulation. This article will provide and
overview the requirements and capabilities needed to satisfy these requirements. The
data processing, and telemetry communities will play a major role in providing the
expertise to support the development of the nation’s future Theater Missile Defense
capabilities.
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