In this age, the internet has becoming more and more popular recently. How to manage and organize the network effectively is a very important issue.Therefore, the technology of VPN was born. Through the VPN, we can manage and organize the local netork which spread everywhere effectively.But the tunneling technology which VPN used has a security problem. If we also change the VPN¡¦s port number, it will have a big dangerous security problem. In this paper, we will analyze some basic technology of VPN, and introduce how to modify the VPN. Let VPN have ability to pass through the firewall. This problem will make the people who managed whole network or firewall hard to control and manage it. Another, this paper will bring up the solution which can solve the security problem effectively. The key of network security problem is to use another protocol¡¦s port number. The solution in this paper will through solve this problem, so hacks can¡¦t modify the TCP port number such as HTTP Port 80 at will. Our solution is to implement a packet filter which is based on ethernet device driver.We use the RFC document which are defined by IETF to make the packet check rule. This packet filter can reject the illegal packet and make sure the network is safe.

In vehicles one of the most important components which affect comfort of the driver and the purchasing decision is the driver&rsquo / s seat. In order to improve design of a driver seat in a leader company of automotive sector, a comprehensive analysis of customer expectations from the driver seat is performed with a cross functional team formed by representatives of design, marketing, production, quality and services departments. In this study, collection of customer voice data and development of an exceptional &ldquo / customer satisfaction estimation model&rdquo / using these data are presented. Data are modeled by the help of Logistic Regression. This model is able to estimate how much a given customer is likely to be satisfied with the driver seat at a certain confidence level. It is also explained how this model can be used to identify design improvement opportunities that help increase the probability that a customer likes the driver seat. The modeling and analysis approach used for the particular case is applicable in general to many other cases of product improvement or development.

Human beings always keep seeking for a better life ,our civilization also keeps moving forward grounded on this momentum .Each economic booming implies a new application or technology developed. Liquid crystal was found by a Austrian scientist, F.REINITZER in 1968 .Japanese companies applied it into large scale display started in 90s,which urged us moving into LCD era . In this study, we will discuss the competitive advantage of Taiwanese LCD driver IC industry ,the key component of LCD supply chain . Also we will take Taiwanese LCD driver IC design house-Novatek for example . By using five-forces framework , diamond structure and co-opetition theory ,we will dig out Taiwanese LCD driver IC industry¡¦s competitive advantage and its own position among world market . This study found Taiwanese LCD driver IC industry has competitive advantages of industry cluster ,high competition ,world-class customers ,quality human resources and government¡¦s support . With those advantages , Taiwanese LCD driver IC industry plays an important role of world market . We also propose strategies to Taiwanese LCD driver IC industry based on the result of this study .

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Developments in automotive (particularly hybrid electric vehicles), aerospace, and energy production industries over the recent years have led to expanding research interest in integrated circuit (IC) design toward high-temperature applications. A high-voltage, high-temperature SOI process allows for circuit design to expand into these extreme environment applications. Nearly all electronic devices require a reliable supply voltage capable of operating under various input voltages and load currents. These input voltages and load currents can be either DC or time-varying signals. In this work, a stable supply voltage for embedded circuit functions is generated on chip via a voltage regulator circuit producing a stable 5-V output voltage. Although applications of this voltage regulator are not limited to gate driver circuits, this regulator was developed to meet the demands of a gate driver IC. The voltage regulator must provide reliable output voltage over an input range from 10 V to 30 V, a temperature range of −50 ºC to 200 ºC, and output loads from 0 mA to 200 mA. Additionally, low power stand-by operation is provided to help reduce heat generation and thus lower operating junction temperature. This regulator is based on the LM723 Zener reference voltage regulator which allows stable performance over temperature (provided proper design of the temperature compensation scheme). This circuit topology and the SOI silicon process allow for reliable operation under all application demands. The designed voltage regulator has been successfully tested from −50 ºC to 200 ºC while demonstrating an output voltage variation of less than 25 mV under the full range of input voltage. Line regulation tests from 10 V to 35 V show a 3.7-ppm/V supply sensitivity. With the use of a high-temperature ceramic output capacitor, a 5-nsec edge, 0 to 220 mA, 1-µsec pulse width load current induced only a 55 mV drop in regulator output voltage. In the targeted application, load current pulse widths will be much shorter, thereby improving the load transient performance. Full temperature and input voltage range tests reveal the no-load supply current draw is within 330 µA while still providing an excess of 200 mA of load current upon demand.

The paper refers to the discussion of measuring and assessing knowledge capital. In particular, the interconnectedness of the intangible resources in organizations is not well represented in the methodical approaches. Moreover, the identification of driver resources which is strongly connected with this question is far from being solved in a satisfactory manner. Therefore, this article reviews existing methods of the scenario analysis in view of the performance measurement discussion and contributes towards an advanced analysis of resources in organizations.

Originally presented as the author's Thesis--Zugl.: Technische Universität München, 2007. / Includes bibliographical references.

In this research the problem of incident congestion on surface street networks is addressed. Microscopic simulation is used to simulate incident scenarios on various corridors in the Tampa Bay area. The effect of the three factors, namely, network, speed and signal strategies on the traffic flow is studied. The network performance is based on Highway Capacity Manual specified measures of effectiveness prepared by the Transportation Research Board. Three inherently different city corridors, high, medium and low volume, are used to test the strategies developed. The strategies investigated include varying speed limits during incidents and using pre-timed and semi-actuated signals that respond to real time traffic volumes. The effectiveness measures are total delay in vehicle minutes, average speed in miles per hour and average travel time in seconds. Different facilities on a network include intersections; both signalized and unsignalized, local highways and arterials. The outputs from the simulation model is used to set up a factorial design to study the interaction between network type, signal strategy and speed strategy with the measures of effectiveness being the response variables. This type of corridor analysis is unique and provides decision support for local transportation planning departments for making corridor enhancements. In most city, state or county planning departments road planning is merely based on projected traffic demand using existing static models and does not factor necessary adjustments for incidents. Another unique aspect of this research is that variable speed limits are tested on surface streets. Such a test is not available in the literature. With dynamic message signs, next generation communication networks for traffic signal control and ITS technologies available, it is possible to implement the strategies suggested in this research.

Since the creation of the automobile, there has been an effort to create and implement mechanical and electronic devices that would improve vehicle safety. In recent years, electronic technologies have become more efficient and cost effective, therefore creating a great spike in widespread implementation. These safety related devices have to be tested for their reliability and amount of help they provide the driver with. The end user (the driver) has to be involved for a successful device. This research presents the methodology used to evaluate the effectiveness of the rearview video system (RVS) used in vehicles, especially in large commercial trucks and effectively the methodology for a more complete investigation of the problem of correctly implementing a safety device. The focus of this research is backing crashes that involve large trucks. The countermeasure tested was a rearview video system which provides a rear view to the driver in real time. A traditional crash data analysis is almost impossible since there is not enough data to perform it, and no data are available for the use of this system since it is fairly new to the market. A driver experiment under controlled conditions was used to create and collect the data necessary for the analysis. The experiment yielded a total of 71 crashes out of 270 maneuvers (26.3%). When analyzed, three backing neuvers yielded different probabilities of having a backing crash with and without the RVS. The increase in stop rate ranged from 46.67 percent to 4.44 percent. This is interpreted as crash reduction due to the device. Driver behavior was observed during the experiment and measured for significant differences. The drivers needed on average 6.47 seconds more time for the maneuvers with the RVS in use. They spent less time looking at mirrors and did it less frequently in order to accommodate the additional glance location presented to them. Overall they seemed to be able to manage their time with some exceptions. The driver acceptance of the device was also measured with a survey given to them after they completed the test. Overall in all measures the majority of drivers agreed that the system helps in reducing the rear blind spot and thus it is a helpful device in reducing backing crashes since it will help them avoid potential hazards while backing. The majority also stated that they would like to have the device in their truck for every day operations. These results show an acceptance of the device and therefore the maximization of the device's use and potential benefits. The RVS is therefore effective in reducing potential backing crashes. The results presented here are limited, and inferences are made with the experiment conditions in mind. General application of the results is possible, with certain assumptions and restrictions.

Mutational analyses of cancer genomes have identified novel candidate cancer genes with hitherto unknown function in cancer. To enable phenotyping of mutations in such genes, we have developed a scalable technology for gene knock-in and knock-out in human somatic cells based on recombination-mediated construct generation and a computational tool to design gene targeting constructs. Using this technology, we have generated somatic cell knock-outs of the putative cancer genes ZBED6 and DIP2C in human colorectal cancer cells. In ZBED6-/- cells complete loss of functional ZBED6 was validated and loss of ZBED6 induced the expression of IGF2. Whole transcriptome and ChIP-seq analyses revealed relative enrichment of ZBED6 binding sites at upregulated genes as compared to downregulated genes. The functional annotation of differentially expressed genes revealed enrichment of genes related to cell cycle and cell proliferation and the transcriptional modulator ZBED6 affected the cell growth and cell cycle of human colorectal cancer cells. In DIP2C-/-cells, transcriptome sequencing revealed 780 differentially expressed genes as compared to their parental cells including the tumour suppressor gene CDKN2A. The DIP2C regulated genes belonged to several cancer related processes such as angiogenesis, cell structure and motility. The DIP2C-/-cells were enlarged and grew slower than their parental cells. To be able to directly compare the phenotypes of mutant KRAS and BRAF in colorectal cancers, we have introduced a KRASG13D allele in RKO BRAFV600E/-/-/ cells. The expression of the mutant KRAS allele was confirmed and anchorage independent growth was restored in KRASG13D cells. The differentially expressed genes both in BRAF and KRAS mutant cells included ERBB, TGFB and histone modification pathways. Together, the isogenic model systems presented here can provide insights to known and novel cancer pathways and can be used for drug discovery.