Dissertations / Theses on the topic 'Reply to the new test'
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1
Lariviere, William R. "The bee venom test : a new tonic-pain test." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23405.
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The present study describes a new test of tonic pain in rats which can be used as an animal model of persistent pain. In the first experiment, the response to subcutaneous injection of various doses of bee venom into the hind paw of the rat was quantified. The second experiment investigated the effect of morphine and aspirin on the response to an intermediate dose of bee venom. Finally, the third experiment examined the response to concurrent injections of bee venom and formalin. Subcutaneous injection of bee venom produced local inflammation, marked edema, and tonic pain responses. Increasing doses of bee venom produced higher mean pain scores and increased durations of responding. Pain responses lasted up to approximately one hour and the inflammation and edema were virtually gone by 8 hours with the lower doses of bee venom tested and by 2 days with the two highest doses tested. Analgesia was produced by morphine and aspirin, indicating that the bee venom test can be used to test analgesic drugs. Concurrent administration of bee venom and formalin produced responses similar to formalin alone, with an increased duration of responding at higher intensities. The data suggest that the bee venom test is a valid animal model of experimental tonic pain.
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Daungkaew, Saifon. "New developments in well test analysis." Thesis, Imperial College London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.397688.
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Hur, Chang Soo. "Variance bound test : a new approach." The Ohio State University, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=osu1269522789.
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Chen, Yaw-Huei 1959. "A NEW TEST GENERATION ALGORITHM IMPLEMENTATION." Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/276527.
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This thesis describes a new test generating algorithm, depth-first algorithm. This algorithm detects the reconvergent fanout. The controllability and observability measures are included in this algorithm to guide the forward and consistency drives. The major objective of this research is to develop a test vector generatiang algorithm, which is modified from D-algorithm, and to link this algorithm with SCIRTSS programs. This depth-first algorithm is more accurate and more efficient than D-algorithm. Serveral circuits are tested under DF3 and SCR3 and the results are listed in this paper.
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Nanukuttan, Sreejith V. "Development of a new test protocol for the permit ion migration test." Thesis, Queen's University Belfast, 2007. https://pure.qub.ac.uk/portal/en/theses/development-of-a-new-test-protocol-for-the-permit-ion-migration-test(1c6008d6-3dba-4249-8a11-08e6a61fd295).html.
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Chloride induced corrosion of steel in concrete is one of the most common reasons for the deterioration of reinforced concrete in both marine and transportation structures. In order to assess the chloride penetration resistance of concrete, the common practice is to remove cores from the structure and test them in a laboratory to determine the chloride diffusion coefficient using the steady state diffusion test. This test is not popular due to its long test duration to achieve a steady state of flow of chlorides through the test specimen, which is used to calculate the diffusion coefficient. Therefore, applied voltage tests (known as migration tests) have become quite common, in which the transport of chlorides ions through the test specimens is accelerated by applying a potential difference across them. The measurements during either the non-steady state condition or the steady state condition are used to calculate a chloride migration coefficient, which has been reported to correlate well with the corresponding coefficient from the diffusion based tests. The chloride diffusion coefficient of concrete can also be predicted more rapidly using other indirect methods, such as the electrical resistivity test. By following the principle of the migration test, a new in situ migration test (called the Permit ion migration test) was developed at Queen's University Belfast in the late 90s. The validity of this test was established for concretes containing normal Portland cement, by comparing the in situ migration coefficient with both the coefficient of diffusion (from both steady state and non-steady state diffusion tests) and the migration coefficient from the steady state migration test. However, it was considered to be necessary to broaden its applicability for testing concretes containing supplementary cementitious materials, by repeating the validation study on concretes containing such materials. Furthermore, there was a need to redesign the apparatus to make it more reliable and user-friendly for site applications. Therefore, a detailed investigation was carried out, initially as part of a European Round Robin Test programme (viz. EU FP5 Growth Programme - Chlortest) to identify the most reliable laboratory-based methods for assessing the chloride diffusivity of concretes which are commonly used in practice. This was followed by a detailed laboratory study on concretes containing supplementary cementitious materials, such as microsilica (ms), pulverised fuel ash (pfa) and ground granulated blast furnace slag (ggbs), in addition to normal Portland cement (ope) as a control. In this investigation, not only the tests identified in the initial investigation were used, but also were additional tests such as the new Permit ion migration test and the Wenner four probe resistivity test. The results from these investigations were used to establish the validity of the Permit ion migration test for testing concretes containing supplementary cementitious materials and to improve its test protocol. As part of the Chlortest programme, a non-steady state diffusion test (to act as a reference method), a non-steady state migration test, a steady state migration test and a resistivity test were selected and a comparative (reliability) study was carried out using concretes, manufactured by four different EU countries, containing ope, pfa,ggbs and ms as binders. The results indicated that both the non-steady state migration test and the bulk resistivity test are the most reliable tests in assessing the chloride diffusivity of these. The results from the steady state migration test were found to be affected by the use of a thickness of the test sample less than the maximum size of the coarse aggregate. In the validation study that was carried out using the Permit ion migration test, the insitu migration coefficient correlated well with the non-steady state migration coefficient, the steady state migration coefficient and the bulk resistivity for a range of concrete mixes containing different types of binders, such as ope, ms, pfa andggbs. For the determination of the onset of the steady state condition and the estimation of the steady state chloride flux, it was found that the conductivity of the anolyte could effectively be used, which in turn could eliminate the need for sampling chloride solutions from the anolyte periodically. Further, there existed an excellent degree of correlation between the peak current and the steady state migration coefficient from both the steady state migration test and the Permit ion migration test, which indicated that the former could be used to predict the latter, with much lesser effort and complexity of the test protocol. On the basis of the findings from both sets of investigation, a new test protocol was developed for the Permit ion migration test and the Permit was redesigned. The new test protocol used conductivity of the anolyte instead of the chloride concentration to identify the onset of the steady state condition and there is the option to calculate the chloride migration coefficient from either the peak current or the steady state of chloride flux. The new Permit was designed to work as a stand-alone instrument onsite, with little interference from the operation once the test had been started, but at any stage a computer could be connected to view the progress of the test.
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Jones, David A. "Creation science a new test of orthodoxy? /." Theological Research Exchange Network (TREN), 1986. http://www.tren.com.
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Eccles, Lee H., and Lawrence A. Malchodi. "NEW BOEING FLIGHT TEST DATA ACQUISITION SYSTEMS." International Foundation for Telemetering, 1991. http://hdl.handle.net/10150/613056.
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International Telemetering Conference Proceedings / November 04-07, 1991 / Riviera Hotel and Convention Center, Las Vegas, NevadaThe Boeing Commercial Airplane Group’s Flight Test Engineering organization is developing two new data acquisition systems. One of these systems will be used to investigate problems on aircraft which are being flown by the airlines in normal airline service. The second system is intended for use as the data acquisition system during the certification of the new 777 airplane. The two systems will differ in physical size, capacity and the recorder being used. They are expected to use as much of the same hardware and software as possible. This paper discusses the design of both systems.
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Costello, Suzanne. "Towards new hermeticity test methods for MEMS." Thesis, Heriot-Watt University, 2011. http://hdl.handle.net/10399/2611.
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Hermeticity is a measure of how well a package can maintain its intended ambient cavity environment over the device lifetime. Since many Micro-Electro-Mechanical Systems (MEMS) sensors, actuators and microelectronic devices require a known cavity environment for optimum operational performance, it is important to know the leak rate of the package for lifetime prediction purposes. In this field, limitations in the traditional leak detection methods and standards used originally for integrated circuits and semiconductors have been blindly and often incorrectly applied to MEMS and microelectronic packages. The aim of this project is to define accurately the limitations of the existing hermeticity test methods and standards when applied to low cavity volume MEMS and microelectronic packages and to demonstrate novel test methods, which are applicable to such packages. For the first time, the use of the Lambert-W function has been demonstrated to provide a closed form expression of the maximum true leak rate achievable for the most commonly used existing hermeticity test method, the helium fine leak test. This expression along with the minimum detectable leak rate expression is shown to provide practical guidelines for the accurate testing of hermeticity for ultra-low volume packages. The three leak types which MEMS and microelectronic packages are subject to: molecular leaks, permeation and outgassing, are explained in detail and it is found that the helium leak test is capable of quantifying only molecular leak in packages with cavity volumes exceeding 2.6 mm3. With many MEMS and microelectronic package containing cavities with lower volumes, new hermeticity test methods are required to fill this gap and to measure the increasingly lower leak rates which adversely affect such packages. Fourier Transform Infra-Red (FTIR) spectroscopy and Raman spectroscopy are investigated as methods of detecting gas pressure within MEMS and microelectronics packages. Measured over time, FTIR can be used to determine the molecular and permeation leak rates of packages containing infra-red transparent cap materials. Future work is required to achieve an adequate signal to noise ratio to enable Raman spectroscopy to be a quantitative method to determine molecular leaks, permeation leaks and potentially outgassing. The design, fabrication and calibration procedure for three in-situ test structures intended to monitor the hermeticity of packages electrically are also presented. The calibration results of a piezoresistive cap deflection test structure show the structure can be used to detect leak ii rates of any type down to 6.94×10-12 atm.cm3.s-1. A portfolio of hermeticity test methods is also presented outlining the limitations and advantages of each method. This portfolio is intended to be a living document and should be updated as new research is undertaken and new test methods developed.
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Perez, Hugo. "New Measurement Methods For Ground Vibration Test." Thesis, KTH, Flygdynamik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-276465.
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Flight-testing represents an important step of an airplane development. Every new or modified aircraft configuration is tested. Through set of tests, the quality and reliability of aircrafts are guaranteed. At Dassault Aviation, the flight test Directorate responsible for carrying out flight tests is located at Istres, in South of France. One major test before flying is the Ground Vibration Test (GVT). The aim of this test is to measure Eigen frequencies and mode shapes of the structure. Those results are after compared to the ones given by the finite element model in order to verify it or update it. Determining the structural behavior has a significant importance for aircraft safety, for instance, it helps to determine the aircraft’s flutter boundary. Under unsteady aerodynamic loads, the aircraft structure can be dynamically unstable, meaning that the amplitude of oscillations increases with time. This phenomenon called flutter can highly damage the airplane or can even lead to the complete destruction of its structure. GVTs are performed by exciting the aircraft with oscillatory forces on designated parts. Then, hundreds of accelerometers are used to measure the vibrations. Knowing exactly the input excitation and how the structure answers, it is possible to calculate the relations (so-called transfer functions) between the applied oscillatory forces and the acceleration measurements. This measurement method based on accelerometers is highly accurate; however, one accelerometer only provides one punctual measurement. In order to have an infinite number of measurement points and thus, a better understanding of the mode shapes, new measurement methods should be investigated. As part of Ground Vibration Testing, this paper presents an investigation on new innovative measurement methods that could improve and complement the current methods based on accelerometers. This report is structured in three parts; the first part gathers and presents some innovative measurement methods and the two following parts focus on experimentations of two measurement methods using rapids cameras and 3D laser scanners.Flygtestning är ett viktigt steg av att utveckla ett flygplan. Genom en uppsättning tester blir varje ny eller modifierad flygkonfiguration certifierad. Certifiering garanterar säkerhet, kvalitet och pålitlighet. Avdelningen för flygtestning på Dassault Aviation är ansvarig för genomförandet av flygtester I Istres, södra Frankrike. Ett viktigt test före flygning är Ground Vibration Test (GVT). Målet med detta test är att mäta strukturens egenfrekvenser och lägesformer. Resultaten jämförs sedan med dem som ges av den finita elementmodellen för att kunna verifiera eller uppdatera dem. Att fastställa det strukturella beteendet är av stor vikt för flygplanets säkerhet; till exempel hjälper det att stipulera planets flygstabilitet och fladdergränsen. Under ostadiga aerodynamiska belastningar kan flygplanets struktur vara dynamiskt instabil, vilket innebär att svängningens amplitude ökar med med tiden. Resonansfenomenet som kallas för fladder kan allvarligt skada eller till och med leda till total förstörelse av flygplanets struktur. GVT: er utförs genom att utsätta flygplanet för svängande krafter på utsedda delar av planet. Sedan används hundratals accelerometrar för att mäta deformationerna. Genom att veta exakt inmatningsexitering och hur strukturen svarar, är det möjligt att beräkna förhållandena (de så kallade överföringsfunktioner) mellan de applicerade oscillerande krafterna och accelerationsåtgärderna. Denna mätmetod baserad på accelerometrar är mycket exakt; installationen tar emellertid mycket tid och skapar en viktig överbelastning på grund av ett stort antal accelerometrar och kablar som används. Som en del av markvibrationstest presenterar detta dokument en utredning om nya innovativa mätmetoder som kan förbättra, komplettera eller till och med ersätta de nuvarande metoderna baserade på accelerometrar. Denna rapport är strukturerad i tre delar; en kort konstnärligt samling där det presenteras några innovativa mätmetoder och sedan två delar med fokus på experiment av två mätmetoder med hjälp av rapids kameror och 3D-laser. Arbetet är ett första steg i en lång forskning som säkert på några år kommer att avföra accelerometrar och ersätta dem med nya metoder som är mycket bekvämare.
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Raventos, Joaquin. "New Test Set for Video Quality Benchmarking." Digital Commons @ East Tennessee State University, 2011. https://dc.etsu.edu/etd/1226.
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A new test set design and benchmarking approach (US Patent pending) allows a "standard observer" to assess the end-to-end image quality characteristics of video imaging systems operating in day time or low-light conditions.
It uses randomized targets based on extensive application of Photometry, Geometrical Optics, and Digital Media.
The benchmarking takes into account the target’s contrast sensitivity, its color characteristics, and several aspects of human vision such as visual acuity and dynamic response. The standard observer is part of the "extended video imaging system" (EVIS).
The new test set allows image quality benchmarking by a panel of standard observers at the same time. The new approach shows that an unbiased assessment can be guaranteed.
Manufacturers, system integrators, and end users will assess end-to-end performance by simulating a choice of different colors, luminance levels, and dynamic conditions in the laboratory or in permanent video systems installations.
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Koponen, Henrik. "Investigation of a New Test Method to Perform a Vibration Test on Alternators." Thesis, KTH, MWL Marcus Wallenberg Laboratoriet, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-224169.
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This master thesis work was performed in the Scania RECT group. The purpose of this study was to investigate a new test method and to examine if it was possible to perform a vibration test on two alternators at the same time where one would act as a motor and the other as a conventional alternator. That all electric machines can be run both as a motor and a generator was nothing new. But the question was whether it was possible to put a load on the motor with enough good results to perform a vibration test. Among other things, in order to verify that subcontractors conform to Scania’s life length requirements, these types of vibration tests are routinely performed. Previous tests have shown that there have been some problems to perform a vibration test during operation. This due to low belt tension and unwanted resonances in the system. After thorough analysis of different control systems a controller to try to get the generator to rotate was purchased. First tests showed that it was possible to operate the alternator as an electric motor. Thereafter the new electric motor was paired with a similar alternator via a belt to start loading the original alternator. Two alternator types were investigated, one that worked significantly better in terms of testability than the other and the decision was taken to only use the better during the final vibration test. To the final test a completely new test rig was constructed to run new converted alternators in the future. Also, a fixture compatible with the bottom plate where the shaker test is performed was designed for future tests of alternators. Final vibration test resulted in several interruptions where the tested alternator broke down several times at the given PSD level and the final test could not be completed. However, it could be concluded that the new test method worked very well and can be used for future vibration tests of alternators.Detta arbete utfördes på Scania på gruppen RECT. Syftet med detta examensarbete var att undersöka en ny provmetod och testa ifall det var möjligt att vibrationsprova två generatorer samtidigt där den ena skulle fungera som en motor och den andra som en vanlig generator. Att alla elektriska maskiner går att köras som både motorer och generatorer var inget nytt. Men frågan i detta fall var om det var möjligt att belasta motorn med tillräckligt goda resultat för att kunna utföra ett vibrationstest. Denna typ av vibrationstester utförs för att bl.a. kunna säkerhetsställa att underleverantörer håller livslängden på sina komponenter. Tidigare tester hade visat att det varit problematiskt att vibrationstesta generatorer under drift, bland annat pga. dålig remspänning och oönskade resonanser i systemet. Efter noggrann analysering av olika styrsystem inköptes en styrenhet för att försöka få generatorn att rotera. Första testerna visade att det gick att driva generatorn som motor. Därefter kopplades den nya motorn ihop med likadan generator via en rem och generatorn kunde börja belastas. Två generatorer undersöktes varav den ena fungerade avsevärt bättre gällande testbarhet än den andra. Beslutet togs att använda sig av den bättre av dessa under det slutliga vibrationstestet. Till slutprovet konstruerades även en helt ny testrigg för att kunna driva omgjorda generatorer i framtiden. Även en fixtur till bottenplattan där skakprovet utfördes designades för framtida prov av generatorer. Det slutliga vibrationstestet resulterade i flera avbrott där den testade generatorn gav vika vid den givna PSD-nivån och sluttestet kunde därmed inte slutföras. Däremot kunde slutsatsen dras att den nya provmetoden fungerade och kan användas för framtida vibrationstester av generatorer.
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Lagerkvist, Love. "Computation as Strange Material : Excursions into Critical Accidents." Thesis, Malmö universitet, Institutionen för konst, kultur och kommunikation (K3), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-43639.
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Waking up in a world where everyone carries a miniature supercomputer, interaction designers find themselves in their forerunners dreams. Faced with the reality of planetary-scale we have to confront the task of articulating approaches responsive this accidental ubiquity of computation. This thesis attempts such a formulation by defining computation as a strange material, a plasticity shaped equally by its technical properties and the mode of production by which is its continuously re-produced. The definition is applied through a methodology of excursions — participatory explorations into two seemingly disparate sites of computation, connected in they ways they manifest a labor of care. First, we visit the social infrastructures that constitute the Linux kernel, examining strangle entanglements of programming and care in the world's largest design process. This is followed by a tour into the thorny lands of artificial intelligence, situated in the smart replies of LinkedIn. Here, we investigate the fluctuating border between the artificial and the human with participants performing AI, formulating new Turing tests in the process. These excursions afford an understanding of computation as fundamentally re-produced through interaction, a strange kind of affective work the understanding of which is crucial if we ambition to disarm the critical accidents of our present future.
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Wang, Tanche. "Isovaline : a new analgesic." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/2656.
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There is a great need for new analgesics. The current problem in treatment of severe pain is that side effects limit the effectiveness of therapy. Glycine receptors are important in modulation of nociception, suggesting a novel class of analgesics. Previous studies in rats show that intrathecal administration of glycine agonists and amino acids structurally similar to glycine have
antinociceptive effects. The effects of isovaline, a unique, non-proteogenic glycine-like aminoacid, have not been studied. Isovaline is absorbed from the gut and transported across the blood-brain-barrier.
We examined the hypothesis that isovaline produces antinociception in mice. Administration of strychnine, an antagonist at glycine receptors, into the cisterna magna or lumbar intrathecal space resulted in allodynia, localized to the somatotopic distribution of the trigeminal and lumbar nerves. These findings provided a basis for models of lumbar and trigeminal neuralgia.
Racemic isovaline blocked strychnine induced allodynia in both models without apparent side effects. We next investigated the antinociceptive effects of glycine-like amino acids in formalin foot assay, a conventional rodent model of acute and chronic pain. Antinociceptive effects were demonstrated on intrathecal administration of glycine, beta-alanine, and isovaline. Intravenous isovaline produced significant antinociceptive effects in the formalin foot model.
The toxicity of isovaline and related amino acids were determined. Exploratory behavior, gait, and responses to stimuli were used to assess sedation. The rotarod test was used to examine central nervous system (CNS) and neuromuscular toxicities of intravenous isovaline. Lumbar administration of glycine and beta-alanine caused scratching and/or lower body weakness. Isovaline at 7-times intrathecal ED50 produced lower body weakness in some animals. None of the amino acids produced sedation comparable to morphine. At 6-times ED50, beta-alanine produced weakness. Both glycine (ED50) and beta-alanine (3x ED50) but not isovaline produced local nerve irritation. Intracisternal injection of glycine did not reverse allodynia and resulted in death. Neither R nor S enantiomers of isovaline impaired performance on the rotarod test.
Isovaline has significant antinociceptive properties. Given the absence of apparent CNS or motor toxicity, isovaline has potential as a clinical analgesic.
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Borg, Erik. "New Impact test method for rock drill inserts." Thesis, Uppsala universitet, Tillämpad materialvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-355151.
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This work has been performed at the Applied Materials ScienceDivision at The Ångström Laboratory in collaboration with SandvikMining AB. The project is part of the joint research programmeCoFree.In this work, the problem of finding an impact test method forcemented carbide rock drill inserts is considered. A suitable testmethod is required to benchmark alternative binder cemented carbidesagainst today’s cobalt based grades. The developed test method isbased on a Charpy pendulum arrangement and utilizes, as in rockdrilling, impact of cylindrical bars to achieve the high impact forcesufficient to fracture the rock drill inserts. The impact issymmetrical with two inserts facing each other, which proves to be anefficient way of damaging the inserts. To gain more informationregarding the force and pulse duration, the history of the impact isrecorded with the use of strain gauges. The measured force curvesfrom repeated tests are typically very similar, a strong indicationthat the test loads the buttons in a well-defined, repeatable way.Also, quasi-static loading of the insert is present in the impactwhich agrees to the results from a static compression test. Thisindicates that the inserts are subjected to quasi-static loading,rather than dynamic loading.A single impact test procedure was developed in this work. Thismethodology proved capable of differentiating the impact performanceof two different button cemented carbide grades. Hence, the test canbe used in the future as a benchmark test. It is however necessary toobtain statistical evidence. The impact performance was measured byobserving cracks produced in the impact contact zone with the aid ofan optical microscope with 85x objective. Radial cracks are veryoften found, often forming a cross around the contact zone. Whenlarge button chippings occur due to the impact loading, a very clearsudden drop in the measured force pulse is seen. This is however notseen for impacts that only produces cracks.
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Su, Yue. "A new test of the weak equivalence principle /." Thesis, Connect to this title online; UW restricted, 1992. http://hdl.handle.net/1773/9707.
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Puelz, Michael. "A program to generate and validate new test versions of a neuropsychological planning test." Virtual Press, 1991. http://liblink.bsu.edu/uhtbin/catkey/834522.
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Computers are used for diagnostic and training in the neuropsychological rehabilitation. PLANTEST is a program for the IBM-PC that was developed for diagnostic support. It implements a test that gives information about the reduced ability of brain-injured patients to make plans regarding a certain task.The presented thesis describes a knowledge-based system that can be used to develop new test versions for PLANTEST. The program is called SolvePT and it can prove the solubility of test material used in PLANTEST. It can also automatically generate new test material. The program uses an exhaustive forward-chaining, depth-first search and is implemented in Prolog. The datastructures and algorithm of the program as well as space and time requirements are discussed.Department of Computer Science
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Li, Dingjun. "On the sequential test per MIL-STD-781 and new, more efficient test plans." Diss., The University of Arizona, 1990. http://hdl.handle.net/10150/185264.
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The sequential probability ratio test is an efficient test procedure compared to the fixed sample size test procedure in the sense that it minimizes the average sample size needed for terminating the experiment at the two specified hypotheses, i.e., at H₀: θ = θ₀ and H₁: θ = θ₁. However, this optimum property does not hold for the values of the testing parameter other than these two hypotheses, especially for those with values between these two. Also the estimation following a sequential test is considered to be difficult, and the usual maximum likelihood estimate is in general biased. The sequential test plans given in MIL-STD-781 do not meet their nominal test risk requirements and the truncation of these test plans is determined by the theory for a fixed sample size test. The contributions of this dissertation are: (1) The distribution of the successive sums of samples from a generalized sequential probability ratio test in the exponential case has been obtained. An exact analysis method for the generalized sequential probability ratio test has been developed as well as its FORTRAN programs based on this distribution. (2) A set of improved sequential probability ratio test plans for testing the mean for the exponential distribution has been established. The improved test plan can meet the test risk requirements exactly and can approximately minimize the maximum average waiting time. (3) The properties of the estimates after a sequential test have been investigated and a bias reduced estimate has been recommended. The general method for constructing the confidence interval after a sequential test has been studied and its existence and uniqueness have been proved in the exponential case. (4) Two modification to the Wald's sequential probability ratio test, the triangular test and the repeated significance test, in the exponential case have been also studied. The results show that the triangular test is very close to the optimal test in terms of minimizing the maximum average sample size, and a method for constructing the triangular test plan has been developed.
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Ilsever, Yalcin. "A new method of scoring Torrance's Test of Creativity." Thesis, University of British Columbia, 2000. http://hdl.handle.net/2429/42400.
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This study proposed an alternative method of scoring the
Torrance Test of Creative Thinking: Thinking Creatively with Words
(TTCT: Verbal A). This scoring method was compared to the
conventional scoring method. I first considered the current method
of scoring, "the old method" and then proposed a "new method".
The old and the new methods of scoring were compared on a
subscale of the TTCT. Both the old and the new methods of scoring
were then compared to the Canadian Test of Basic Skills (CTBS) total
language scores to determine if a relationship existed between verbal
academic achievement versus the creativity construct.
The new scoring method of creativity showed an improvement
over the old method of scoring on the TTCT: Verbal A subtest. The
reliability coefficient, for internal consistency, declined from 0.83 to
0.54. This decline was interpreted as an improvement because the
initial value of 0.83 was artificially high. This was due, to a very high
intercorrelation between fluency and originality (inter-attribute
correlation value =. 97). The new scoring method corrected this
inflation.
I found a veiy low, negative correlation between CTBS total
language and both the old and the new methods of scoring for
creativity. The correlation coefficients were -.18, and -.17,
respectively. This low value negative correlation demonstrated that
creativity was not connected to verbal academic achievement.
Although divergent thinking is the most commonly used aspect
of creative thinking, previous researchers (e.g., Runco, 1986) have
suggested that the tests of creativity lack reliability. The issue of
reliability of a test score has generally been defined in terms of
variation of scores obtained by the individual on successive
independent testing (Cronbach, 1947). Neither the assumption of
constancy of true scores nor the assumptions of experimental
independence can be realized in practice with most psychological
variables. Therefore, the composite reliability of a test needs to be
considered as a concept, which can not be directly measured.
Torrance (1986) specifically discouraged the use of composite test
scores and instead recommended interpretation of the subscale
scores in relation to one another. The fundamental problem currently
faced with the TTCT is that scores derived from the same response
data cause potentially spuriously subscale correlation. This inflates
the reliability coefficient and seriously jeopardizes score consistency
and reliability.
Thorndike (1972) has argued that fluency, flexibility, and
originality scores tended to be highly correlated, since all are
accumulated over the same set of responses given by the
examinees. This seriously discounts the value of the old scoring
formula recommended by the Technical Scoring Formula of the
TTCT. This fundamental problem of scoring has been attributed to
derivation of five separate scores in that the scores were derived
from the same response data (Heasusler & Thompson, 1988).
This type of score derivation introduced spuriously high scale
correlation because the flexibility, fluency, and originality scores
tended to be highly correlated.
Through some corrective procedures, correcting fluency, Clark
and Mirels (1970) recommended that correlation coefficient value
from several measures of Torrance's Test of Creative Thinking
(Figure Completion) would decrease. This procedure consisted of
administering a revised form of the sub-test to 93 students. These
were then scored, based on fluency, flexibility, originality, and
elaboration. Corrected fluency scores led to lower reliability
coefficient values. My study had a similar experience. The alpha
coefficient value dropped to .54 from .83, with the new scoring
method.
My research dealt with the score inflation, with the old scoring
method, scoring inconsistency, and, proposed a new method of
scoring the TTCT. I also highlighted the issue of inter-attribute high
correlation between fluency and originality attributes. These two
attributes are the main ingredients in assessing creativity.
My research focused on the three traits of creativity, namely:
(1) the fluency, (2) the originality, (3) the flexibility. These were
measured with the use of the TTCT: Verbal A: Activity 4: Product
Improvement. The TTCT was administered to a sample of children
(N=187) in grades4 to 8. The data was analyzed to assess score
reliability. The existing CTBS total language scores available at the
school were also utilized in order to consider any relationship
between creativity and verbal academic achievement.
The new scoring method enhanced the reliability coefficient
and improved upon the scoring techniques. The new scoring
approach adopted the same scoring techniques as the old method'
with the measurement of fluency and flexibility attributes. However,
with the measurement of originality attribute, a new approach was
adopted. The new scoring method I have designed considered only
the two score attributes; fluency and flexibility. The originality score,
which is simply a "fall-out" from the fluency score, was not included.
This exclusion avoided double counting between fluency and
originality and dealt with the high correlation problem between these
two attributes. With the old scoring method, the correlation between
fluency and originality would be as high as .99 (Thorndike, 1972).
This simply indicated that fluency and originality attributes were
measuring the same creativity dimension. The new method of
scoring rectified this problem.
Hocevar (1979) recommended a method as a way of improving
test reliability. Hocevar's method, however, recommended scoring for
originality and flexibility and dividing the resulting score by the total
number of responses. His recommendation was very valid in
improving discriminant validity and did not address the score inflation
and high inter-attribute correlation problem between fluency and,
originality. I have somewhat revised his recommended method and
proposed that e capture the flexibility and fluency responses and
divide the resulting score by the total number of responses. This
ensured consistency in measurement and corrected the high inter-correlation
problem between the TTCT attributes. It also improved
score reliability.
Under the new method of scoring, each response for flexibility
and fluency is adjusted by dividing the resulting scores by the total
number of responses. Since fluency scores tended to be highly
correlated with the originality scores, this new approach safeguarded
against duplication in scoring also reduced spurious correlation
between fluency and originality. Originality attribute was no longer
required for scoring. Division of both flexibility and fluency by the
total number of responses also streamlined the overall composite
score.
The composite score of the TTCT, under the new method
contained fluency and flexibility scores. This also ensured that a
number of response which would normally be scored with "0",
would be considered as part of the fluency score, as originality
attribute was no longer considered.
The factor analytic results obtained by Heauslar and Thompson
(1988) showed that the TTCT subscale yielded discrete scores. The
general creativity factors were sufficient in assessing creative
behavior. These factors included fluency, flexibility and originality.
The total TTCT scores were not recommended (Torrance, 1974;
Torrance & Ball, 1984) for assessment of creativity. He
recommended using scores of fluency, flexibility and originality. This
also jeopardized the integrity of the total creativity scores.
The new method improved the reliability of the test scores of
We TTCT by enhancing the existing scoring methodology. With the
old scoring approach of originality, responses which did not meet the
pre-determined fluency categories, were scored a "0", regardless of
the relevancy of response. This diluted the originality scored, and
distorted score reliability. The new method considered all the fluency
responses and scrutinized all response for consistency under fluency
category. Fluency attribute was not simply considered as the number
of total ideas, regardless of the degree of relevancy of task on hand.
Each response of fluency was evaluated for its relevancy, in view of
the task, on hand. This streamlined the scoring approach with
fluency.
With the new method of scoring, the standardized alpha
coefficient declined from .83 to .54. The new method of scoring
improved the process and made it easy and more relevant to score
for fluency and flexibility. A very low, negative linear relationship was
found between the creativity construct and academic achievement,
as represented CTBS total language test.Education, Faculty of
Educational and Counselling Psychology, and Special Education (ECPS), Department of
Graduate
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Halliday, Tracey Jaye. "The Development of a New Zealand Adult Reading Test." The University of Waikato, 2006. http://hdl.handle.net/10289/2494.
Full textAbstract:
The National Adult Reading Test (NART), developed in Britain is commonly used in clinical settings to estimate premorbid intelligence in New Zealand. Research suggests psychometric tests are more accurate if normed on the population they are used with. This study attempted to establish norms for the original NART based on a New Zealand population and develop a National Adult Reading Test for use with a New Zealand population (NZART). Sixty-four university students were administered the Wechslers Abbreviated Scale of Intelligence (WASI), the NART and the New Zealand Adult Reading Test (NZART). A regression equation was developed to estimate premorbid intelligence in this sample. Results indicate fewer errors occur on the NZART than the NART suggesting it may be a better indicator of premorbid intelligence for a New Zealand sample. Furthermore, the NZART was more accurate at estimating premorbid WASI IQ across all three subscales of the WASI at a range of IQ levels. Analyses were also conducted to ascertain the impact of demographic variables. Little overall difference was found in test scores in relation to gender, age or income. Although future studies need to be conducted to validate this new measure, initial results suggest that the NZART may be a more accurate predictor of premorbid IQ in a New Zealand population.
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Gagnon, Brian D. "Evaluation of New Test Methods for Fire Fighting Clothing." Digital WPI, 2000. https://digitalcommons.wpi.edu/etd-theses/218.
Full textAbstract:
Despite advancements in the development of synthetic fibers and materials that provide better insulation, fire ground burn injuries remain a significant issue. The current test methods for fire fighting clothing were investigated to determine their adequacy in evaluating the actual performance of clothing materials. This investigation uncovered several potential problems with the current test methods. A series of new, small scale, tests were used to evaluate the shortcomings of the current test methods and develop possible improvements. A small test apparatus, designed and donated by Ktech Corporation, was used to measure the thermal properties (thermal conductivity and volumetric heat capacity) of a series of fire fighting clothing materials. The thermal properties were estimated for single fabric layers, as well as ensembles, with various levels of moisture added to simulate actual end use conditions. In addition, a skin simulant sensor was used to assess the time to 2nd degree burn for exposures similar to those required in current standards for fire fighting clothing. A one dimensional heat conduction model was developed to predict the time to 2nd degree burn for the skin simulant sensor protected with outer shell materials that may be used as wildland fire fighting clothing, using the thermal property data obtained from earlier tests. An alternative method was developed to calculate the time to 2nd degree burn for ensembles evaluated with the new skin simulant sensor. The predictions for the time to 2nd degree burn obtained from the new skin simulant sensor were compared against results obtained using the sensor specified in the current test methods. The predictions for the skin simulant sensor were consistently shorter than those from the current test sensor. The current test sensor predictions for the time to 2nd degree burn were nominally 40% to 50% higher than the predictions from the skin simulant sensor during the evaluations of outer shell materials.
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Burns, Laurie Davenport. "Test and characterization of a new triple-GEM detector." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/36130.
Full textAbstract:
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2006.Includes bibliographical references (p. 83-84).
In my thesis project, I provide a description of the entire process of materials preparation, assembly, testing, and characterization of several triple-GEM (Gas-Electron Multiplier) prototype detectors. GEM detectors represent one of the latest developments in a new style of gaseous particle detectors. They have become well-known and widely used. Improvements in foil production are important for future applications of the detectors to large scale tracking devices. One function of this thesis project is to compare the performances of GEM foils produced by different sources when installed in identical prototype triple-GEM detectors.
by Laurie Davenport Burns.
S.B.
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Sheppard, Jeremy. "An evaluation of a new test of reactive agility." Thesis, Federation University Australia, 2004. http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/169529.
Full textAbstract:
"The purpose of this study was to investigate the test-retest and inter-rater reliability of a new test of agility, as well as the validity of the test to distinguish between players of differing ability in Australian Rules Football (ARF). In addition, the study's third purpose was to identify the relationships between straight-sprinting (SS), a sprint with planned change of direction (CODS), reactive strength (RS), and the new test of agility (Reactive Agility Test, RAT)."Master of Applied Science
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Olausson, Linus. "Construction and test of a new compact TRT equipment." Thesis, KTH, Tillämpad termodynamik och kylteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-226294.
Full textAbstract:
A relevant contribution to sustainable development can be achieved by providing efficient solutions for heating buildings. The use of a heat pump taking heat from the bedrock with the help of a borehole heat exchanger is a common solution in Sweden to accomplish this. In situ measurement of the thermal conductivity of the ground by means of thermal response test is necessary for medium to large size installations to ensure proper sizing of the borehole system. This master thesis was done in cooperation with the department of geo energy at the company Bengt Dahlgren. The aim was to design a new compact thermal response test equipment, test it on a coaxial borehole heat exchanger and evaluate the test results and design a simple business model for using the equipment commercially. The company already had an equipment for thermal response tests, which formed the basis for the new equipment. A literature review was done to gain knowledge on thermal response test equipment, its components and borehole heat exchangers. Also, an evaluation of results from an earlier test of an 800 m deep borehole with a coaxial borehole heat exchanger was made. The project resulted in the construction of a new more compact equipment for thermal response tests with a new, improved heating solution. Two different business models based on renting out the equipment were designed. The equipment was tested on a 200 m deep borehole with a coaxial borehole heat exchanger. The test indicated a thermal conductivity of 2.46 𝑊𝑚∙𝐾 and a borehole resistance of 0.031 m∙KW.En viktig del av en hållbar utveckling är energieffektiva lösningar för uppvärmning av byggnader. En vanlig lösning i Sverige är att använda en värmepump kopplad till en borrhålsvärmeväxlare och utnyttja berggrunden som värmekälla. I vissa fall är det motiverat att testa bergets värmeledningsförmåga med hjälp av ett termiskt responstest för att mer precist kunna dimensionera borrhålen. Denna mastersuppstas gjordes i samarbete med Bengt Dahlgren geoenergi. Arbetet syftade till att designa en kompakt utrustning för termiskt responstest, testa den nya utrustningen på en koaxial borrhållsvärmeväxlare och utvärdera testresultatet samt att designa en enkel affärsmodell för den nya utrustningen. Företaget hade sedan tidigare en utrustning för termiskt responstest, som låg till grund för designen av den nya. En litteraturstudie utfördes för att få mer kunskap om termisk responstestutrustning, dess komponenter och borrhålsvärmeväxlare. Dessutom gjordes en utvärdering av mätresultat från ett tidigare utfört test på ett 800m djupt borrhål med en koaxial borrhålsvärmeväxlare. Arbetet resulterade i en ny kompaktare utrustning för termiskt responstest med en ny smart lösning för uppvärmningen. Två olika affärsmodeller baserade på uthyrning av den nya utrustningen togs fram. Utrustningen testades på ett 200 m djupt borrhål med en koaxial borrhålsvärmeväxlare. Borrhålet visade en termisk värmeledningsförmåga på 2,46 𝑊𝑚∙𝐾 och ett borrhålsmotstånd på 0,031 m∙KW
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Bowden, Alice Therese. "Normalisation, Evaluation and Verification of the New Zealand Hearing Screening Test." Thesis, University of Canterbury. Department of Communication Disorders, 2013. http://hdl.handle.net/10092/8084.
Full textAbstract:
Presbycusis, or age-related hearing loss, is one of the most common chronic conditions to affect adults. On average individuals wait seven years from the time they notice a hearing impairment to the time they seek help from a hearing professional. This delay may have wide reaching implications for public health in the coming decades, as aging populations become more prevalent and as further research assesses the relationship between hearing loss and mental health conditions such as depression and dementia. The development of the New Zealand Hearing Screening Test (NZHST) aims to fulfil a need for a robust hearing screening test that individuals can access from home. This digit triplet test (DTT) will be particularly valuable for those in rural areas where audiological services are sparse and for those who have mobility issues which restrict attendance at clinical appointments. In order to accommodate as many New Zealanders as possible, the NZHST will have two versions, an internet version and a land-line telephone version; both of which can be delivered into their home in either New Zealand English or Te Reo Māori.
This research is the third instalment in the development of the NZHST. The current research is divided into three parts; the verification of the New Zealand English DTT for the internet version, the pilot study for the Te Reo Māori DTT for the internet version, and the normalisation of the New Zealand English DTT for the telephone version.
In the verification process, 50 individuals with various audiometric thresholds listened to 3 lists of 27 New Zealand English digit triplets, presented in three conditions; binaurally and to each ear separately via an internet interface. In the pilot study, 27 participants with various audiometric thresholds listened to 3 lists of 27 Te Reo Māori digit triplets via a software interface on a laptop computer. The normalisation process involved 10 individuals with normal hearing (average air-conduction pure tone thresholds of ≤ 20 dB HL) listening to 168 New Zealand English digit triplets under two different noise conditions; one as continuous speech noise and the other a noise with spectral and temporal gaps (STG noise) presented via a software interface on a laptop computer. Four conditions of the 168 digits were presented; once to each ear for the continuous noise, and once to each ear for the STG noise.
Significant correlations were found between the binaural DTT and PTA (R = 0.66), and between the monaural ear DTT and PTA (R = 0.73) for the verification. The binaural DTT had a test sensitivity of 94% and a specificity of 88%. Pilot study correlation between binaural DTT and PTA was R = 0.61, and was R = 0.63 between monaural DTT and PTA; while the binaural sensitivity (100%) and specificity (100%) of the Te Reo DTT was affected by the very small number of participants with hearing loss (n = 4). The normalisation revealed that detection of the digit triplets was easier when STG noise (Lmid = -11.5 dB SNR, SD = 1.6 dB) was used as a masker, rather than continuous noise (Lmid = -8.9 dB SNR, SD = 1.4 dB).
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Baksh, Rehman Asaad. "Edinburgh Social Cognition Test (ESCoT) : a new test of theory of mind and social norm understanding." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/31385.
Full textAbstract:
Social cognitive abilities are needed to process and understand social information in order to respond appropriately in everyday social interactions. While there are a number of tests that have been developed to measure social cognition in the literature, many have important limitations such as only assessing one ability, performance being predicted by measures of intelligence and exhibiting low ecological validity. To address some of these limitations, I developed a new test called the Edinburgh Social Cognition Test (ESCoT). The ESCoT is an animated test that assesses four domains of social cognition: cognitive Theory of Mind (ToM) (What is X thinking?); affective ToM (How does X feel at the end of the animation?); interpersonal understanding of social norms (Did X behave as other people should behave?); and intrapersonal understanding of social norms (Would you have acted the same as X in the animation?). The aims of this thesis were to examine the validity of the ESCoT as a test of social cognition and to further investigate social cognitive processes in healthy and neurological populations. The ESCoT was firstly administered to a healthy population of older, middle-aged and younger adults to examine the effects of ageing on social abilities. This study found that the ESCoT was sensitive to age; poorer performances on cognitive and affective ToM and also interpersonal but not intrapersonal understanding of social norms were predicted by older age. Furthermore unlike traditional tests used in the study, performance was not predicted by measures of intelligence. Instead, the sex of participants and autistic-like traits, in addition to age were found to be important for performance. The ESCoT was then validated in a sample of adults with Autism Spectrum Disorder (ASD), and performance was compared to performance on established social cognition tests. Convergent validity was demonstrated in the study and the ESCoT was sensitive to social cognitive difficulties found in ASD. This study also showed that the ESCoT was more effective than existing tests at differentiating ASD adults and neurotypical controls. The interplay of social anxiety and empathy on ESCoT performance in addition to further exploring sex and autistic-like traits were then examined in a younger adult population. Social anxiety and empathy were not significant predictors of performance on the ESCoT. Similar to the results of the ageing study, this study found that women were better than men on affective ToM. However, unlike the ageing study, better cognitive ToM performance was predicted by older age. Better performance on interpersonal understanding of social norms and ESCoT total scores were predicted by more years of education. The subsequent chapter then examined the clinical efficacy of the ESCoT in a patient population (Alzheimer's disease, behavioural-variant Frontotemporal dementia and amnestic mild cognitive impairment). Here performance on the ESCoT was compared between the patients and neurotypical controls. It was found that patients performed poorer than neurotypical controls on ESCoT total scores, affective ToM, inter-and intrapersonal understanding of social norms. The final chapter returned to healthy ageing to more closely investigate the consequences of healthy ageing on social cognitive processes, by examining the positivity bias (preference for positive over negative stimuli) found in older adults using an attention paradigm. There was no evidence of the positivity bias in older, middle-aged and younger adults in regards to reaction time or accuracy. However, older and middle-aged adults differed in accuracy across stimuli type compared to younger adults. This thesis offers novel insights into the social cognitive abilities of various populations. The ESCoT presents a new, informative and validated test of social cognition for researchers and clinicians to use, which has many advantages over established tests of social cognition.
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Yang, Fan Reddy Sudhakar M. Chakravarty Sreejit. "New tests and test methodologies for scan cell internal faults." [Iowa City, Iowa] : University of Iowa, 2009. http://ir.uiowa.edu/etd/452.
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Choi, Ki-Young. "A new equivalence principle test using a rotating torsion balance /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/9762.
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Toresson, Albin. "Creating a test system for a new era of radios." Thesis, Linköping University, Department of Computer and Information Science, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11036.
Full textAbstract:
As communication becomes more and more vital in defending a country’s borders, better radios are needed. When the Swedish armed forces saw that their existing radios took too much bandwidth in their net, they knew that something had to be done.
The existing radio, called Ra 180 RAP, was modified so that it could send X.25 messages into a network. This significantly reduced the use of bandwidth, as a packet switched network only uses the bandwidth when sending info.
This final thesis has been aimed to create a system that can test the X.25 function in the upgraded, so called CI-RAP, radio. This system will come in handy both when upgrading and later when performing service on the radios.
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Berman, Isabel Natalie. "Towards a new reading comprehension test based on cognitive theory /." Access Digital Full Text version, 1985. http://pocketknowledge.tc.columbia.edu/home.php/bybib/10647119.
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Muradali, Fidel. "A new procedure for weighted random built-in self-test /." Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=59424.
Full textAbstract:
Experience has shown that an excessive time penalty can be incurred when testing large scan circuits with a uniform random test pattern generation approach. As a solution to this problem, this work explores the use of weighted random patterns (WRP) to reduce, by orders of magnitude, the test application time in self-testing circuits.Much work has been done on the off-line development of compact test sets, but a problem which still remains is how to efficiently apply them on-chip. A means of transforming a given test set into a relatively short weighted sequence and pseudorandom sequence, whose cumulative fault coverages approximate that guaranteed by the original test set, is proposed.
The single weight set is formulated using a method which does not explicitly consider the circuit structure. Instead, sufficient circuit information contained in the given test set can be extracted using simulation techniques. This is done by analyzing a random pattern detection profile and isolating the vectors which cover faults difficult to detect using random patterns. After extracting the useful bits from these vectors, a weight set characteristic of the corresponding faults is estimated as the ratio of 1's to 0's at each bit (input) position.
The generation scheme is evaluated using five large scannable circuits. A local approach to on-chip pattern generation is examined.
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Åslin, Erik. "“The development of a new reactive agility test for soccer”." Thesis, Mittuniversitetet, Avdelningen för hälsovetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-35705.
Full textAbstract:
Fotboll är en intermittent sport med både offensiva och defensiva aktioner som kräver ett flertal höghastighetsrörelser (sprint, vändningar) som respons till yttre stimuli vilket betonar betydelsen av att träna och testa agility (kvickhet). Syfte med denna studie var att a) konstruera ett nytt fotbollspecifikt reaktivt agility-test, b) utvärdera reliabiliteten och validiteten av de nya testerna och c) undersöka eventuellt samband mellan fysiska egenskaper (snabbhet, effektutveckling/explosivitet, styrka) och snabbhetstest med riktningsförändringar (CODS) och förmåga till reaktiv agility (RA). Tjugo unga manliga fotbollsspelare (ålder: 17,0 ± 0,9 år; kroppslängd: 1,81 ± 0,03 m; kroppsvikt: 70,0 ± 7,4 kg; kroppsfett 11,3 ± 2,0 %) delades upp i två grupper (10 spelare per grupp) baserat på ålder och fotbollsprestation (U17 & U19). Reliabilitetsdata visade hög tillförlitlighet för de båda CODS och RA-testerna (ICC-koefficienter 0,92 och 0,70-0,88). Within-subject variabiliteten hade en variationsvidd emellan 3,6–5,8 %. Ett moderat samband mellan CODS och RA-protokollen indikerar på en låg samhörighet. Regressionsanalyserna visade att de testade fysiska kvaliteterna inte kunde användas för att förutsäga resultaten i CODS och/eller de andra RA-testerna. Oberoende t-test visade att den högre rankade gruppen var bättre i både CODS och två andra RA-tester. Sammanfattningsvis, påvisade de nykonstruerande testerna god reliabilitet och validitet för test av unga fotbollsspelare. I tillägg, visade sig CODS och RA vara två oberoende kvaliteter och bör tränas och testat separat.Godkännande datum: 2017-11-07
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Lesser, Elizabeth Rochelle. "A New Right Tailed Test of the Ratio of Variances." UNF Digital Commons, 2016. http://digitalcommons.unf.edu/etd/719.
Full textAbstract:
It is important to be able to compare variances efficiently and accurately regardless of the parent populations. This study proposes a new right tailed test for the ratio of two variances using the Edgeworth’s expansion. To study the Type I error rate and Power performance, simulation was performed on the new test with various combinations of symmetric and skewed distributions. It is found to have more controlled Type I error rates than the existing tests. Additionally, it also has sufficient power. Therefore, the newly derived test provides a good robust alternative to the already existing methods.
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Yang, Fan. "New tests and test methodologies for scan cell internal faults." Diss., University of Iowa, 2009. https://ir.uiowa.edu/etd/452.
Full textAbstract:
Semiconductor industry goals for the quality of shipped products continue to get higher to satisfy customer requirements. Higher quality of shipped electronic devices can only be obtained by thorough tests of the manufactured components. Scan chains are universally used in large industrial designs in order to cost effectively test manufactured electronic devices. They contain nearly half of the logic transistors in large industrial designs. Yet, faults in the scan cells are not directly targeted by the existing tests. The main objective of this thesis is to investigate the detectability of the faults internal to scan cells.
In this thesis, we analyze the detection of line stuck-at, transistor stuck-on, resistive opens and bridging faults in scan cells. Both synchronous and asynchronous scan cells are considered. We define the notion of half-speed flush test and demonstrate that such new tests increase coverage of internal faults in scan cells. A new set of flush tests is proposed and such tests are applied at higher temperatures to detect scan cell internal opens with a wider range of resistances. We also propose new scan based tests to further increase the coverage of those opens. The proposed tests are shown to achieve the maximum possible coverage of opens in transistors internal to scan cells. For an asynchronous scan cell considered, two new flush tests are added to cover the faults that are not detected by the tests for synchronous scan cells. An analysis of detection of a set of scan cell internal bridging faults is described. Both zero-resistance and nonzero-resistance bridging fault models are considered. We show that the detection of some zero-resistance non-feedback bridging faults requires two-pattern tests. We classify the undetectable faults based on the reasons for their undetectability.
We also propose an enhanced logic BIST architecture that accomplishes the new flush tests we propose to detect scan cell internal opens.
The effectiveness of these new methods to detect scan cell internal faults is demonstrated by experimental results using some standard scan cells from a large industrial design.
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Makino, Hitomi. "The development of a new performance-based test for measuring emotional intelligence Humility-Empathy-Assertiveness-Respect Test /." Lynchburg, Va. : Liberty University, 2010. http://digitalcommons.liberty.edu.
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El-Fandi, Mahmoud. "New multisymbol signals and recursive algorithms for frequency response measurement." Thesis, University of Strathclyde, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248819.
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Hope, Ruth Veronica. "Towards the Development of the New Zealand Hearing in Noise Test (NZHINT)." Thesis, University of Canterbury. Department of Communication Disorders, 2010. http://hdl.handle.net/10092/4815.
Full textAbstract:
The ability to understand speech in noise has a profound impact on everyday communication, but cannot be predicted on the basis of puretone thresholds and/or performance on tests of speech in quiet. The aim of this thesis was to develop an adaptive speech in noise test based on the Hearing in Noise Test (HINT) that would be reliable and valid for speakers of New Zealand English (NZE). The methodology used followed the standard procedures for developing the HINT in a new language. Five hundred sentences of 5-7 syllables were collected from New Zealand children’s books and recorded by a native NZE speaker. Nine normal-hearing native NZE speakers aged 18-50 listened to three sets of 50 sentences at -2, -4 and -7 dB signal-to-noise ratios (SNR) in order to establish a performance-intensity (PI) function for these sentences. Three groups of 10 participants were scored on their performance on the sentences in 65 dBA speech-weighted noise at varying SNR. After each round of testing with a new group of participants, the SNR of each sentence was adjusted in order to get closer to 70% intelligibility for all sentences. Sentences that were too easy or difficult or did not respond to adjustments were discarded. Once the remaining 240 sentences were of approximately equal intelligibility, 24 phonemically matched lists of 10 sentences were formed and tested on 12 participants using the adaptive HINT software. The overall mean threshold was calculated as -6 dB, s.d=1.1 dB. The lists were combined to form 12 lists of 20 sentences which would become the NZHINT. Time delays meant that the collection of normative data could not be completed.
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Bayoumi, Ahmed M. "New laboratory test procedure for the enhanced calibration of constitutive mode." Diss., Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-03292006-114517/.
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Thesis (Ph. D.)--Civil and Environmental Engineering, Georgia Institute of Technology, 2006.Paul Mayne, Committee Member ; James Tsai, Committee Member ; Glenn Rix, Committee Member ; David Frost, Committee Member ; Carlos Santamarina, Committee Chair.
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Iskander, K. F. "A new approach in modelling undrained clay behaviour during pressuremeter test." Doctoral thesis, Universite Libre de Bruxelles, 1999. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/211850.
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Luo, Peng. "Unit test modeling, a new approach in object oriented unit testing." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0008/MQ52469.pdf.
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Riveros, Angela. "A test of short-termism in the New York stock exchange." Thesis, Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/29513.
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Sagawa, Atsushi. "New solution for well test analysis in reservoirs with permeability discontinuities." Thesis, Heriot-Watt University, 2000. http://hdl.handle.net/10399/551.
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Gardner, Lee S., Catharine M. Hoaglund, and Darcy S. Painter. "Managing Telemetry Information in the New Era of Test and Evaluation." International Foundation for Telemetering, 1992. http://hdl.handle.net/10150/611954.
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International Telemetering Conference Proceedings / October 26-29, 1992 / Town and Country Hotel and Convention Center, San Diego, CaliforniaTerms like efficiency, quick response, and interoperability are becoming the bywords of the test and evaluation (T&E) community as the Defense Department tightens its corporate belt [1]. These changes mark the end of an era of manual processes and duplication of effort and the beginning of an era of cooperation, standards, and Total Quality Management (TQM). Managing the huge volume of telemetry information required to support flight test at the Air Force Flight Test Center (AFFTC) has required new paradigms and system development strategies. These new ideas have resulted in the Aircraft Information Management System (AIMS), a system designed to meet the challenges of a new era in T&E. This paper discusses the AIMS design and function as background for the deeper issue of effective, efficient management of telemetry setup information. The information history model used in AIMS is presented and discussed. In the process of developing standards for the AIMS a methodology was discovered and successfully implemented for resolving information management issues in the framework of system development.
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Cirillo, Giovanni. "Space Surveillance and Tracking Tool: Implementation and Test of New Methods." Thesis, KTH, Rymdteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-262030.
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In March 2019 the number of artificial objects bigger than 1 mm in orbit around the Earth is estimated to be more than 170 millions. Only a small fraction of them (0.03%) is catalogued. An impact of an operational satellite with one of these debris can damage the satellite and undermine its mission. So it is important to catalogue as many objects as possible in order to reduce the risk of a collisions. This is done by using the software tool Space Object Observations and Kalman Filtering (SPOOK), developed in Airbus Defence and Space in Friedrichshafen. The goal of this Master Thesis was to create newfunctionalities to this tool and improve the existing ones. In particular three main goals have been accomplished: • a new model for the lighting ratio has been built to take into account the occultation of the Sun due to a covering body (for example the Earth or the Moon) and itsinfluence on the solar radiation pressure, necessary to have a good model for orbit propagation; • a tracklet building algorithm has been built to distinguish different tracklets (consecutive observations of the same object along its orbit) as a starting point for the association of different measurements belonging to the same object at distant epochs, necessary to update a catalogue of space objects; • a model to take into account the process noise has been improved giving some suggestion on how to tune the different parameters for different kinds of orbit.I mars 2019 uppgick antalet konstgjorda föremål större än 1 mm i omloppsbana runt jorden till över 170 miljoner. Av dessa är endast en mycket liten andel (0.03%) katalogiserade. En kollision mellan en operativ satellit och ett annat föremål i bana kan helt eller delvis förstöra satelliten. För att reducera risken för kollisioner är det därför viktigt att katalogisera så många föremål som möjligt. Detta görs genom att använda programvaran "Space Object Observations and Kalman Filtering" (SPOOK), som utvecklats av företaget Airbus Defence and Space i Friedrichshafen, Tyskland. Målet med detta examensarbete var att skapa nya funktioner i programvara samt att förbättra de befintliga funktionerna. Tre huvudmål har uppnåtts: • En ny modell för ljusförhållandet har skapats för att ta hänsyn till ocklutationen av solen på grund av en täckande kropp (till exempel jorden eller månen) och dess påverkan på solstrålningstrycket på rymdfarkosten, vilket är nödvändigt för att ha en bra modell för hur omloppsbanan fortplantas • En algoritm för s.k. tracklets, flera observationer av samma föremål längs dess omlopp, har skapats i syfte att skilja mellan olika tracklets som utgångspunkt för bestämma vilka mätningar som tillhör samma föremål vid avlägsna epoker. Detta är nödvändigt för att korrekt kunna uppdatera katalogen över rymdföremål. • Modellen för att ta hänsyn till processbruset har förbättrats och förslag ges om hur man ställer in olika parametrar för olika slags omloppsbanor.
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Buzys, Matas, and Sara Nilsson. "Development of a new test methodology for car-to-truck crash." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-262654.
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Till följ av de stora skadorna som riskeras vid frontalkollision mellan personbil och lastbil, utför Scania CV AB kraschtester för att bättre kunna utveckla komponenter med syfte att skydda passagerarna i personbilen. Den typ av test som denna studie bygger på utvärderar den s.k. FUP:en (engelska Front Underrun Protection). I dagsläget görs ett fullskaligt test, där en personbil avfyras in i en lastbil. Syftet med studien är att undersöka möjligheten att utveckla en förenklad test metod där endast de väsentliga komponenterna från lastbilen inkluderas, och en representativ struktur ersätter personbilen. Om möjligt kommer detta minska kostnaderna samt möjliggöra för större repeterbarhet. Tester och utvärderingar görs med hjälp av simulationer i LS-Dyna, ANSA & META, och designkoncept visualiseras i CAD-programmet CATIA V5. Resultat visar att det finns goda förutsättningar för att ersätta personbilen med en barriär av honeycomb struktur samt att lastbilen kan ersättas med en vagn där de väsentliga komponenterna fäst. Diskussioner kring simuleringarna och designen lyfter fram faktorer som visar på goda utvecklingsmöjligheter, men med betoning på det fortsatta arbetet som krävs.Scania CV AB are developing components to prevent fatal damages during frontal collisions with passenger cars. Therefore, they need to test their assemblies and specifically FUP (Frontal Underrun Protection). Currently, a full-scale test is done in which a passenger car is launched into a truck. The purpose of this study is to examine and develop the possibility of having a simplified test procedure in which only the relevant components of the truck are included, and a representative structure replaces the car. If possible, this would reduce costs and allow for greater repeatability. Analysis and evaluations are done via finite element models using ANSA, LS-Dyna and META. The conceptual design is visualized using CATIA V5. Results show good indication that the passenger car can be replaced by a trolley with deformable barriers mounted on it and the truck can be replaced by a simplified structure with main FUP components mounted onto it. Discussions about the numerical models results and the conceptual design highlight factors that show promising possibilities, but with emphasis on the continued work that is required.
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Dobson, Allison J. "A test of new imagery-based intervention for increasing physical activity." Thesis, Queensland University of Technology, 2018. https://eprints.qut.edu.au/117345/1/Allison_Dobson_Thesis.pdf.
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This study examined the efficacy of a newly developed way to help people build and sustain their motivation for healthy behavioural changes using imagery about positive effects of the change, past successes, and ways to solve challenges. It compared effects on physical activity, from accessing the intervention immediately or after a delay. Only those randomly allocated to receive the intervention immediately increased duration of physical activity during the controlled phase. The approach may have potential to address any behaviour change that people see a need to make.
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Chen, Lan. "Assessing the Test Usefulness : A Comparison Between the Old and the New College English Test Band 4 (CET-4) in China." Thesis, Högskolan Kristianstad, Sektionen för Lärarutbildning, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-1042.
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This paper is concerned with the newly reformed national English test for Chinese college students, called the College English Test (CET) Band 4 (or Level 4). By comparing the test before and after it was reformed, there will be a close examination with regard to the aspects of test reliability, construct validity, authenticity, interactiveness, impact and practicality. With an extra focus on how vocabulary and grammar are tested, the paper aims to investigate the extent to which the new system is considered useful and how effective it is in testing vocabulary and grammar.
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Ning, Wei. "A new approach to test for interactions in two-way ANOVA models." Related electronic resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2006. http://proquest.umi.com/login?COPT=REJTPTU0NWQmSU5UPTAmVkVSPTI=&clientId=3739.
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Yazdipour, Rassoul. "A new test of the market imperfection theory of foreign direct investment." Connect to resource, 1987. http://rave.ohiolink.edu/etdc/view.cgi?acc%5Fnum=osu1262627970.
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Al-Ghamdi, G. A. J. "English proficiency in the Saudi Air Academy : Validating a new test battery." Thesis, University of Edinburgh, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374099.
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Michandani, Chandru, Chuck Kozlowski, and Toby Bennett. "The New Generation Spacecraft Data Simulator to Test Level Zero Processing Systems." International Foundation for Telemetering, 1995. http://hdl.handle.net/10150/611501.
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International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, NevadaOver the last several years, the Data Systems Technology Division (DSTD) at Goddard Space Flight Center (GSFC) has developed software tools to generate simulated spacecraft data to support the development, test, and verification of prototype and production of its Very Large Scale Integration (VLSI) telemetry data systems. Recently, these data simulation tools have demonstrated their versatility and flexibility in the testing and deployment of several very high performance Level Zero Processing (LZP) systems. Because LZP involves the wide scale reordering of transmitted telemetry data, the data simulation tools were required to create a number of very large and complex simulated data sets to effectively test these high rate systems. These data sets simulated spacecraft with numerous instrument data sources downlinking out-of-sequence and errored data streams. Simulated data streams were encapsulated in Consultative Committee for Space Data Systems (CCSDS) packet and NASCOM data formats. The knowledge and expertise gained in the development of the current simulation tools has been used to develop a new generation data simulation tool, known as the Simulated Telemetry Generation (STGEN) package. STGEN is a menu driven software package running on UNIX platforms that can implement dynamic test scenarios with very fast turn around times from the data set design to the data set generation. The error options and locations in the telemetry data stream are fed via simple programs which are in turn script-driven. Scripts are used to manipulate packets, frames, and permit error insertion more easily and quickly. This paper first describes the STGEN software package and its test data design strategies. It then provides an example of STGEN 's first usage in the testing of systems to support EOS-AM spacecraft. Finally, a description of future planned improvements and uses of STGEN are provided.