Miracle-dz/UniFAR-FTUs huggingface dataset:
Alternative Fuels Tests on a C-17 Aircraft: Emissions Characteristics

Abstract : Emissions evaluations were conducted on a C-17 Globemaster III F117-PW-100 engine operated with alternative fuels blends. These tests support the USAF goal of 50% domestic fuel consumption using alternative (synthetic) fuels with lower or equal carbon footprint than petroleum fuels by 2016. The tests took place at Edwards Air Force Base on the period of August 16 through 27, 2010 as part of the United States Air Force (USAF) Alternative Fuels Certification Office (AFCO) ground and flight tests to certify the C-17 on a 50/50 by volume JP-8/hydroprocessed renewable jet (HRJ) fuel blend. Emissions were collected from engine 3 of the parked aircraft operated on conventional JP-8 and 50/50 blends of JP-8 and a beef tallow-derived HRJ, and a 50/25/25 blend of JP-8, HRJ and a coal-derived Fischer-Tropsch (FT) fuel. Gaseous and particulate matter (PM) emissions were measured. PM measurements included particle number (concentration), mass and size distribution. In addition, hazardous air pollutant (HAPs) emissions, smoke numbers and chemical analysis of soot samples were performed for the engine operated with the three fuels. Emissions were collected for five engine operating conditions ranging from 4% (idle) to ~63% of rated maximum thrust. Test results show that the alternative fuel blends resulted in no operational anomalies or detrimental impacts on the gaseous or PM emissions of the F117 engine for any of the conditions tested. Moderate reductions in carbon monoxide (CO) emissions (~30%) and more significant reductions in sulfur oxides (50%), measured HAPs (>60%) and PM emissions (30-60%) relative to operation with JP-8 were observed. The alternative fuels had negligible impact on nitrogen oxides (NOx) emissions.
The reshaping of the traditional television advertising model: An analysis of media agency perceptions and decision-making processes regarding the effects of digital video recorders on television commercial effectiveness.

This research analyzes media agency executives' perceptions and strategic decision-making processes when accessing the impact of digital video recorders (DVRs) on the traditional television commercial spot. Strategic decision-making models, as well as major industry research, forms the theoretical framework used to guide the study. The research takes a quantitative approach using a survey in order to obtain the perceptions and decision-making processes of the media agency executives'. The findings are presented while a discussion of the findings is detailed. The thesis concludes with a summary of the overall thesis research as applied to the field of study.
What makes employee willing to share knowledge via intranet

Knowledge Management (KM) has been increasingly discussed by many scholars and captured the interest of practitioners. Knowledge sharing (KS) is one fundamental aspect in organization knowledge management (KM) practice. It bridges the process of acquisition and utilization of individual knowledge. The emerging approach of KS suggests that KS can not be managed but evolves in rich social interaction whereas the engineering approach assumes that KS can be stimulated by creating conditions (structures and tools) for the process to occur. The study focuses its attention on technical and social dimensions effect on intention to share knowledge (knowledge sharing intention) via intranet, not the actual behavior regarding knowledge sharing. This concept is different since intention to share does not always followed by actual action of sharing. We developed a theoretical model based on the Technology Acceptance Model (TAM) and the Social Capital theory. TAM is used to explain the technical dimension through perceived quality of the intranet whereas SC theory is used to explore social (i.e. structural, cognitive, and relational) dimensions of the social network interaction on the intranet. Through administration of online survey questionnaire as well as close observation to organization intranet system, we test our hypotheses. Moreover, we also gain insight on the actual utilization of intranet with regards to KS purpose. The result of our study reveals that some factors of the social and technical dimension do predict the variation in employees’ intention to share knowledge via intranet (i.e. knowledge sharing intention). Besides contributing to theory building in KS, the results of this study inform practitioner on KS practice.
Database of Mechanical and Hydrological Properties of WIPP Anhydrite Derived from Laboratory-Scale Experiments

The Department of Energy (DOE) has developed the Waste Isolation Pilot Plant (WIPP) for the purpose of demonstrating safe management, storage, and disposal of radioactive transuranic (TRU) waste generated by U.S. defense programs. The WIPP is located in southeastern New Mexico, and the underground facilities of the WIPP (i.e., experimental rooms, disposal rooms, etc.) are sited in the bedded salt of the Salado Formation at a depth of about 660 meters. The DOE has authorized the continuance of scientific research and engineering analysis related to the performance of the WIPP repository. One area of additional research relates to characterization of the mechanical and hydrological properties of anhydrite interbeds within the Salado Formation. These anhydrite interbeds have been penetrated by the shafts that provide access to the underground facilities and also lie in close proximity to the proposed radioactive waste disposal rooms at the repository horizon. Properties of particular interest are mechanical strength, deforrnational behavior, and fluid transport properties such as permeability. These properties will be used in calculationskmalyses of the mechanical and hydrological behavior of the anhydrite, in particular, and the shaft sealing system and disposal rooms, in general.
Engineer in Charge: A History of the Langley Aeronautical Laboratory 1917-1958. NASA SP-4305

A history is presented by using the most technologically significant research programs associated with the Langley Aeronautical Laboratory from 1917 to 1958 and those programs that, after preliminary research, seemed best to illustrate how the laboratory was organized, how it works, and how it cooperated with industry and the military.
Sparsity

Sparsity is a popular assumption adopted in the analysis of data that are supposed to come from high-dimensional models, for use in variable and model selection and in inference after selection. It can also be used in the context of big data in order to avoid signiﬁcant but not relevant conclusions. It is also one of the foundations for compressive sampling or compressed sensing. Sparsity means that the response in a regression model can be predicted with a limited number of covariates. The precise formulation of the assumption depends on the problem at hand.
Effect of Ground Proximity on the Aerodynamic Characteristics of Aspect-Ratio-1 Airfoils With and Without End Plates

An investigation has been made to determine the effect of ground proximity on the aerodynamic characteristics of aspect-ratio-1 airfoils. The investigation was made with the model moving over the water in a towing tank in order to eliminate the effects of wind-tunnel walls and of boundary layer on ground boards at small ground clearances. The results indicated that, as the ground was approached, the airfoils experienced an increase in lift-curve slope and a reduction in induced drag; thus, lift-drag ratio was increased. As the ground was approached, the profile drag remained essentially constant for each airfoil. Near the ground, the addition of end plates to the airfoil resulted in a large increase in lift-drag ratio. The lift characteristics of the airfoils indicated stability of height at positive angles of attack and instability of height at negative angles; therefore, the operating range of angles of attack would be limited to positive values. At positive angles of attack, the static longitudinal stability was increased as the height above the ground was reduced. Comparison of the experimental data with Wieselsberger's ground-effect theory (NACA Technical Memorandum 77) indicated generally good agreement between experiment and theory for the airfoils without end plates.
SIMPLE PROCEDURE FOR FATIGUE CHARACTERIZATION OF BITUMINOUS CONCRETE

The objective of this project was to develop a simple test to design bituminous concrete mixtures for fatigue resistance. Included are two literature reviews: (1) current fatigue testing procedures, and (2) simple test methods that offer possibilities for fatigue prediction. Seven bituminous concretes representing five areas of the United States were tested by a beam fatigue apparatus and several selected simple test methods. Correlations were performed between fatigue results and simple test results, and the best correlations were obtained with the indirect tensile test. Indirect tensile test results correlate with the stress-fatigue life curve under the constant stress fatigue test mode and the strain-fatigue life curve under the constant strain fatigue test mode. The main conclusion is that the indirect tensile test can be used to predict the fatigue characteristics of bituminous concretes and a simple test method is recommended.
Zinc biofortification of bread wheat, triticale, and durum wheat cultivars by foliar zinc fertilization

Abstract Poor zinc (Zn) nutrition of wheat is one of the main causes of poor human health in developing countries. A field experiment with no zinc and foliar zinc application (0.5% ZnSO4.7H2O) on bread wheat (8), durum wheat (3), and triticale (4) cultivars was conducted in a randomized block design with three replications in 2 years. The experimental soil texture was loamy sand with slightly alkalinity. The grain yields of bread wheat, triticale, and durum wheat cultivars increased from 43.6 to 56.4, 46.5 to 51.6, and 49.4 to 53.5 t ha−1, respectively, with foliar application of 0.5% ZnSO4.7H2O. The highest grain yield was recorded by PBW 550 (wheat), TL 2942 (triticale), and PDW 291 (durum), which was 5.22, 4.24, and 4.56% and significantly higher over no zinc. Foliar zinc application increased zinc in bread wheat, triticale, and durum wheat cultivars grains varying from 31.0 to 63.0, 29.3 to 61.8, and 30.2 to 62.4 mg kg−1, respectively. So, agronomic biofortification is the best way which enriching the wheat grains with zinc for human consumption.
Comparisons of Health-Related Quality of Life and Impact Factors in Patients with Depression and Schizophrenia

Background: Depression and schizophrenia are the global common causes worldwide of long-term and devastating disability, which significantly impact the patient quality of life. This paper is aimed to analyze and compare the health-related quality of life (HRQOL) of patients with Depression and Schizophrenia, determine main impact factors of their HRQOL with these two diseases and try to distinct the difference of impacts at socio-demographic，socioeconomic and medical level. Methods: 204 out-patients and in-patients diagnosed Depression or Schizophrenia according to Chinese classification and diagnostic criteria of mental disorders (CCMD-3) were sampled, who were volunteering to participate and can understand the meaning of questionnaires with accordance of the included criteria. The Health survey questionnaire (SF-36) and self-administered measurements were used to appraisal the subjective health status, the disease characteristics and other relevant medical potential predictors of participants. Results: All of the domain scores of SF-36 of patients with Depression and Schizophrenia are both lower than healthy people and there are significant differences in all domains, compared with depression group, most domains of SF-36 in Schizophrenia group are lower besides the body pain (BP) and social function (SF), and are difference in domains of role physical (RP) and mental health (MH) between two patient groups. For depression group, the predictors of unmarried status, subject change of health status and depression degree are correlated to HRQOL in PCS, the predictors of unmarried status, ethnicity and duration of disease are correlated to HRQOL in MCS. For schizophrenia group, predictors of subjective change of health status, family annual income, educational level, severity degree and ethnicity are associated with HRQOL in PCS, only predictor of ethnicity is associated with HRQOL in MCS. Conclusion: The HRQOL of patients was likely be impacted by the factors at both socio-demographic and medical level, but the functions of the same factors were different between depression and schizophrenia.
High heeled gait analysis of ankle joint forces using force platform

An intra-subject comparative study of walking whereas carrying low-heeled shoes versus high-heeled shoes was performed to find and elucidate changes in lower-extremity joint mechanisms related to wearing high-heeled shoes throughout level ground walking. A volunteer sample of ten intact feminine subjects recruited from the institute underwent quantitative mensuration of mesial and frontal plane lower-extremity joint perform, together with angular motion, muscular moment, power, and work. once walking in high-heeled shoes, a major reduction in mortise joint region striated muscle moment, power, and work occurred during the stance section, whereas hyperbolic work was performed by the hip skeletal muscle muscles throughout the transition from stance to swing.
A Numerical Study of Cavitation Inception in Complex Flow Fields

Abstract : Prediction of cavitation inception on Navy propulsors is a very challenging task that has preoccupied propulsor designers for many years. This is in fact true for predictions using scaled experimental tests as well as for predictions based on analytical/numerical modeling. Over the past few years very significant progress has been accomplished by the community in terms of both experimental measurements and numerical techniques development and their application to the problem. Novel sophisticated velocity flow field measurement techniques and their efficient practical application to propulsor studies both at Navy research centers and at other Navy funded laboratories has enabled impressive measurements of the complex flow field in details never observed before. These observations quantified mainly the space variations of the flow field using some time and space averaging. Some effort, but so far less impressive, has also illustrated the time unsteady nature of the challenging phenomena. However, additional efforts are necessary but require tremendous capabilities in data storage and analysis to provide us with time fluctuations of pressures. In parallel impressive progress in computational techniques and in computer power has enabled more and more complex and large simulations. These have included Reynolds Averaged Navier Stokes (RANS) simulation, Large Eddy Simulations (LES) and Direct Numerical Simulations (DNS) applied to larger and larger problems.
Total Synthesis of (–)-Sinulariadiolide

Significance: The tricyclic nor-cembranoid sinulariadiolide was first isolated in 1996 from soft corals found in Okinawa. Fürstner and Meng report the total synthesis of (–)-sinulariadiolide via ring-closing alkyne metathesis followed by an intriguing intramolecular reaction cascade. Comment: Fragments E and H were accessed from geranic acid (A) and carvone (F). Ring-closing alkyne metathesis and hydrostannation–carbonylation of J gave N. The title compound was accessed by a sequence involving transannular Michael addition. A 47% 65% ee
Stop lecturing me, I want to learn

Re-evaluation of pedagogical practice is driving learning design at Queensland University of Technology. One objective is to support approaches to increase student engagement and attendance in physical and virtual learning spaces through opportunities for active and problem-based learning. This paper provides an overview and preliminary evaluation of the pilot of one of these initiatives, the Open Web Lecture (OWL), a new web-based student response application that seamlessly integrates a virtual learning environment within a physical learning space.
The Influences of Physical Attractiveness and Sex-Based Biases on Midshipman Performance Evaluations at the United States Naval Academy

Abstract : The purpose of this study was to evaluate the impacts of physical attractiveness and sex on periodic midshipman performance evaluations at the United States Naval Academy. An experiment was conducted in which 138 senior-ranking male midshipmen participated. Each was provided an identical performance summary report along with one of four Naval Academy yearbook photographs then asked to evaluate the midshipman in the photograph using only the information provided. The target midshipman was presented as either an attractive or unattractive male or female sophomore-level midshipman who demonstrated an average level of performance. The significant finding was that physical attractiveness and sex did influence evaluation scores. The attractive midshipmen received higher overall evaluation scores than the unattractive midshipmen, and the attractive female midshipman received the highest overall evaluation scores. The purpose of this study was to increase awareness of physical attractiveness and sex biases and their negative impacts on performance evaluations. This study also aimed to make training recommendations and suggestions for further research on this topic that will benefit the United States Naval Academy.
Pitfalls in Calculating Cost Growth from Selected Acquisition Reports

Abstract : Two prerequisites for research into patterns and causes of cost growth in major weapon systems acquisition are a reliable database and a consistent methodology for ensuring the comparability of the data. Although there are other sources of data, the Department of Defense Selected Acquisition Report is the primary database for cost growth research. The objective of this study is to make known the weaknesses of this database and how they influence calculations of program cost growth. In addition, the study identifies different methodologies for assessing cost growth when inflation and quantities procured differ from early forecasts. The lessons learned from this research are now being applied to current research aimed at quantifying and understanding the reasons for cost growth.
The perspective tunnel: An inside view on smoothly integrating detail and context.

The perspective tunnel, a general kind of information visualisation artefact, embodies a visual form which exploits natural human visual perception. Perspective tunnels map information on to the floor, ceiling and walls of a tunnel, so that both every item of data is visible and the visual field is used effectively. This maximises the effective use of screen real estate, with the potential of representing an infinite amount of data. In real terms, the visualisation of large amounts of information is achieved. A justification of the perspective tunnel's appropriateness is sought from the study of human visual perception. In addition, a selection of perspective tunnel visualisation techniques are presented.
Residual radioactivity guidelines for the heavy water components test reactor at the Savannah River Site

Guidelines were developed for acceptable levels of residual radioactivity in the Heavy Water Components Test Reactor (HWCTR) facility at the conclusion of its decommissioning. Using source terms developed from data generated in a detailed characterization study, the RESRAD and RASRAD-BUILD computer codes were used to calculate derived concentration guideline levels (DCGLs) for the radionuclides that will remain in the facility. The calculated DCGLs, when compared to existing concentrations of radionuclides measured during a 1996 characterization program, indicate that no decontamination of concrete surfaces will be necessary. Also, based on the results of the calculations, activated concrete in the reactor biological shield does not have to be removed, and imbedded radioactive piping in the facility can remain in place. Viewed in another way, the results of the calculations showed that the present inventory of residual radioactivity in the facility (not including that associated with the reactor vessel and steam generators) would produce less than one millirem per year above background to a hypothetical individual on the property. The residual radioactivity is estimated to be approximately 0.04 percent of the total inventory in the facility as of March, 1997. According to the results, the only radionuclides that would produce greater than 0.0. 1-milliremmore » per year are Am-241 (0.013 mrem/yr at 300 years), C-14 (0.022 mrem/yr at 1000 years) and U-238 (0.034 mrem/yr at 6000 years). Human exposure would occur only through the groundwater pathways, that is, from water drawn from, a well on the property. The maximum exposure would be approximately one percent of the 4 millirem per year ground water exposure limit established by the U.S. Environmental Protection Agency. 11 refs., 13 figs., 15 tabs. « less
Spectral Domain RF Fingerprinting for 802.11 Wireless Devices

Abstract : The increase in availability and reduction in cost of commercial communication devices (IEEE compliant such as 802.11, 802.16, etc) has increased wireless user exposure and the need for techniques to properly identify/classify signals for increased security measures. A communication device's emission includes intentional modulation that enables correct device operation. Hardware and environmental factors alter the ideal response and induce unintentional modulation effects. If these effects (features) are sufficiently unique it becomes possible to identify a device using its fingerprint, with potential discrimination of not only manufacturers but possibly serial numbers for a given manufacturer. Previous AFIT research has demonstrated effectiveness at RF Fingerprinting using 802.11A signals with 1) spectral correlation on Power Spectral Density (PSD) Fingerprints, 2) Multiple Discriminant Analysis/Maximum Likelihood (MDA/ML) classification with fingerprints obtained from Time Domain (TD) and Wavelet Domain (WD) statistical features. As used here, Spectral Domain (SD) fingerprinting uses the Fourier Transform to calculate PSD features for device discrimination. Results here show some improvement over the WD approach (gain approximately equal 3 dB) and significant improvement over the TD approach (gain approximately equal 8 dB gain).