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Wind tunnels used for testing purposes help in analysing the forces, pressure fields and the flow patterns of air around a test specimen. This helps improving the specimen body so as to optimize the performance in the actual working model. The tests conducted are at high as well as low velocity to simulate the natural working environment when the body is in motion in the fluid. This involves maintaining...
Identification of musical instruments from the acoustic signal using speech signal processing methods is a challenging problem. Further, whether this identification can be carried out by a single musical note, like humans are able to do, is an interesting research issue that has several potential applications in the music industry. Attempts have been made earlier using the spectral and temporal features...
In recent years, association networks and their applications have received increasing interest. The relationships in a network should ideally be ascertained without any preconceptions about the existence of a connection a priori. This would allow interpretations to be based on the underlying structure rather than on assumptions. Furthermore, a method that discounts outside influence on the relationships...
This paper describes the basic concepts of a relatively new security approach — Runtime Application Self-Protection Technology (RASP), whose wider implementation is expected in the near future. The current focus of this technology is on the vulnerabilities of Java and .NET platforms. In addition to typification, the paper presents the advantages and disadvantages of RASP. Despite the undoubted advantages,...
For the requisite of verifying the MIKME advanced microphone during serial production, an automated test system for hardware testing was developed. The system, that comprises a specially designed test fixture — bed-of-nails, the PXI instrumentation and a LabVIEW application, is presented in the paper with all of its features related to the MIKME product. The proposed solution is up to 20 times faster,...
IEEE Std. 1687, or IJTAG, defines flexible serial scan-based architectures for accessing embedded instruments efficiently. In this paper, we present a novel test architecture that employs IEEE Std. 1687 together with an efficient test controller to carry out 3D-IC testing autonomously. The test controller can deliver parallel test data for the IEEE Std. 1687 structures and the cores under test, and...
Modern devices often include several embedded instruments, such as BISTs, sensors, and other analogcomponents. New standards, such as IEEE Std. 1687, providevehicles to access these instruments. In approaches based onreconfigurable scan networks, instruments are coupled withscan registers, connected into chains and interleaved withreconfigurable multiplexers, permitting a selective access todifferent...
GUIs are event-driven applications where the flow of the program is determined by user actions such as mouse clicks and key presses. GUI testing is a challenging task not only because of the combinatorial explosion in the number of event sequences, but also because of the difficulty to cover the large number of data values. We propose GUICat, the first cloud-based GUI testing framework that simultaneously...
Mobile systems usually support an event-based model of concurrent programming. This model, although advantageous to maintain responsive user interfaces, may lead to subtle concurrency errors due to unforeseen threads interleaving coupled with non-deterministic reordering of asynchronous events. These bugs are very difficult to reproduce even by the same user action sequences that trigger them, due...
Stored procedures in database management systems are often used to implement complex business logic. Correctness of these procedures is critical for correct working of the system. However, testing them remains difficult due to many possible states of data and database constraints. This leads to mostly manual testing. Newer tools offer automated execution for unit testing of stored procedures but the...
Fixing bugs according to bug reports is a labor-intensive work for developers and automatic techniques can effectively decrease the manual efforts. A feasible solution is to fix specific bugs by static analysis and code instrumentation. In this paper, we present a light-weight approach to fixing the resource leak bugs that exist widely in Android apps while guaranteeing the safety that the patches...
The Geostationary Operational Environmental Satellite R-Series Program (GOES-R, S, T, and U) mission is a joint program between National Oceanic & Atmospheric Administration (NOAA) and National Aeronautics & Space Administration (NASA) Goddard Space Flight Center (GSFC). SpaceWire was selected as the science data bus as well as command and telemetry for the GOES instruments. GOES-R, S, T,...
Robotic systems often have complex configuration spaces that, when poorly set, can cause failures. In this work we take advantage of the close synergy between user and robot in co-robotic systems to better diagnose and overcome configuration failures. We leverage users' understanding of the system to mark failures they observe while the system is in operation. A marked failure indicates that the robot...
Online experiments are frequently used at internet companies to evaluate the impact of new designs, features, or code changes on user behavior. Though the experiment design is straightforward in theory, in practice, there are many problems that can complicate the interpretation of results and render any conclusions about changes in user behavior invalid. Many of these problems are difficult to detect...
As a key aspect of product development, usability of a product is needed to be assessed by conducting usability evaluation. Within the usability evaluation methods, there are several usability assessment questionnaires; one of the most commonly used is the System Usability Scale (SUS). However, the SUS is originally developed in English and there had not been any study conducted to develop the Indonesian...
The paper is devoted to the mutation testing technique that is widely used when testing different software tools. This paper presents a comparative analysis of two mutation testing tools for Java programs, namely Pitest and /Java. They both allow automatically introducing faults into a software code. The analysis has revealed their pros and cons, as well as specific features of their launch and application...
This paper is a cautionary tale about replacement of a controller in a successful current meter when the previous controller became unavailable. The hardware changes required dealing with a new footprint and new voltages and these were done in 2014 and tested in 2015 but the revisions of the C code begun in 2015 have taken all of 2016 to reach the critical testing stage in July 2016 with reports of...
We report the design, analysis and development of Schottky-based frequency multipliers that will be used in millimetre/sub-millimeter-wave heterodyne receiver payloads. The devices are destined for future space deployment in support of a series of second generation European polar-orbiting satellites (MetOp-SG) that will perform operational meteorology.
On-line monitoring of the most central transformer parameters (short-circuit impedance, turn ratio and power loss) by means of voltage and current signals available in substation control rooms is presented in this paper. Upon testing the proposed methods on transformers installed at diverse locations in a typical power network, it has been found that the standard instrument transformers have an order...
The paper presents a method for developing illusionary flight profiles situations for practical testing of pilots using the GYRO IPT II spatial disorientation simulator. Standard flight profiles do not use the full capability of the simulator to train pilots for recognition and recovery from illusions appearing unexpectedly. For this reason, there is a need to create new flight profiles so as to demonstrate...
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