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Today's complex electronic assemblies employ sophisticated and advanced automated test solutions to verify functional performance - both at the time of manufacture and for depot repair scenarios. Providing go / no-go test solutions are routinely created for all types of electronic assemblies. However, the task of diagnosing today's failed UUTs or systems is not a process that is easily automated....
Recently, attacks on corporate websites are increasing and personal information on websites faces growing risks. Most developers are making efforts to establish secure system development processes. However, they have trouble with practice because they are busy and short of time or human resources. This paper describes a cooperative secure integration process that the authors actualize for secure system...
Many semiconductor devices in transport applications do not tolerate failure. Next to design considerations, the effective use of all available production data is key to a successful “Zero Defect” strategy. The challenge to the Manufacturing Information Technology & Automation department begins with a massive amount of raw data to compute and extends to aggregation, categorization and evaluation...
We present a new model-based test case generation approach, which takes inputs an executable system model and preliminary test case coverage, performs an automated model simulation, and eventually generates refined test cases for software testing. We adopt Live Sequence Charts to specify an executable system model, and present a logic-based model simulator for consistency testing. As a result, our...
Refactoring is a process that improves the internal structure of a program without changing its externally observable behavior. On the contrary, in many cases refactoring support for java outputs semantically non-equivalent code after refactoring. Also, the research on refactoring has mostly focused on restructuring a class, its parent and child classes only. However, refactoring will not be complete...
Increasing integration packs more functionality in a single chip necessitating the testing of even more specification parameters. However, there is a tendency to keep test time budged constrained, which leads test engineers to seek more efficient test strategies. Statistical test compaction methods offer generic and circuit independent means of achieving efficient testing. Adaptive test methodologies...
Systematically enumerating derivations of a grammar yields for realistic grammars test sets that are to large to be tested with reasonable costs. Existing reduction techniques for grammar-based testing guide the enumeration process to restrict the number of generated test cases. However, they do not provide a rule coverage criterion, i.e., they do not aim at providing a test set that ensures coverage...
In this paper, we investigate an alternate test strategy for RF integrated circuits based on DC measurements. A methodology to select the appropriate DC parameters is presented, that allows precise estimation of the DUT performances while minimizing the number of measurements to be carried out. The method is demonstrated both on simulation test data from a Low-Noise Amplifier (LNA) and production...
We present an approach to detect web injection vulnerabilities by generating test inputs using a combination of model inference and evolutionary fuzzing. Model inference is used to obtain a knowledge about the application behavior. Based on this understanding, inputs are generated using genetic algorithm (GA). GA uses the learned formal model to automatically generate inputs with better fitness values...
Ordering of analog/RF tests is important for the identification of redundant tests. Most methods for test ordering are based on a representative set of defective devices. However, at the beginning of production testing, there is little or no data on defective devices. Obtaining this data through defect and fault simulation is unrealistic for most advanced analog/RF devices. In this work, we will present...
With much of the current systems engineering workforce reaching retirement age, there is a critical need to develop work experience among new systems engineers. Increasingly, educators and employers are turning to educational technology-based approaches to aid in this process. One such effort is the Experience Accelerator, an on-going research project aimed at maturing program-level systems engineers...
This paper presents the development of a fuzzy model for classification of paddy growth stages based on synthetic MODIS data. Classification of growth stages is an important process in prediction of crop production using a remote-sensing technology. The proposed approach takes advantages of the nature of a fuzzy system which is able to capture gradual changes/movements by fitting its membership functions...
In 2010, IPC released 9592A, “Performance Parameters for Power Conversion Devices”. The standard includes descriptions of Highly Accelerated Stress Screening (HASS) and Highly Accelerated Stress Audits (HASA) for PCD (Power Conversion Device) ESS, and describes them as more effective than Burn-In. A case study comparing the effectiveness of Burn In with Highly Accelerated Stress Audits (HASA) has...
Defect characteristics and consequently test quality vary throughout the production life cycle. An optimal test methodology needs to adjust the test set based on the ever changing defect characteristics to deliver consistent test quality levels. In this paper, we propose an adaptive test framework that alters the test set continuously by utilizing the history of recent failures to track the instantaneous...
The Software Engineering Research community has slowly recognized that empirical studies are an important way of validating ideas and increasingly our community has stopped accepting the sufficiency of arguing that a smart person has come up with the idea and therefore it must be good. This has led to a flood of Software Engineering papers that contain at least some form of empirical study. However,...
New business models, constant technological progress, as well as ever-changing legal regulations require that companies replace their business applications from time to time. As a side effect, this demands for migrating the data from the existing source application to a target application. Since the success of the application replacement as a form of IT maintenance is contingent on the underlying...
The virtual probe (VP) technique, based on recent breakthroughs in compressed sensing, has demonstrated its ability for accurate prediction of spatial variations from a small set of measurement data. In this paper, we explore its application to cost reduction of production testing. For a number of test items, the measurement data from a small subset of chips can be used to accurately predict the performance...
This work presents a case study of wafer probe test cost reduction by multivariate parametric testset optimization for a production RF/A device. More than 1.5 million tested device samples across dozens lots and hundreds of parametric measurements are analyzed using a new automatic testset minimization system. Parametric test subsets are found that can be used to predict infrequent wafer probe failures...
Arithmetic-logic unit (ALU) is an important part of each microprocessor and its main purpose is to process arithmetical and logical operations. Correct results of these calculations are crucial for performance of the entire processor unit. Thus thorough testing of all functions before deployment is necessary. Also thorough testing of whole system is crucial for correct system performance during the...
Using the monthly time series data, adopting the methods of econometrics such as Johansen-Juselius co-integration analysis and Granger causality test, the paper studies the effect of RMB real exchange rate on Chinese import from America. The empirical results show that there is no a co-integration relationship among Chinese import from America, RMB real exchange rate and Chinese actual income. However,...
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