Miracle-dz/UniFAR-FTUs huggingface dataset:
Leveraging Query Logs and Machine Learning for Parametric Query Optimization

Parametric query optimization (PQO) must address two problems: identify a relatively small number of plans to cache for a parameterized query (populateCache), and efficiently select the best cached plan to use for executing any instance of the parameterized query (getPlan). Our approach decouples these two decisions. We formulate populateCache as an optimization problem with the goal of identifying a set of plans that minimizes the optimizer estimated cost of queries in the log, and present an efficient algorithm. For getPlan, we leverage query logs to train machine learning (ML) models to choose the lowest optimizer-estimated cost plan from the cached plans. We conduct extensive experiments using complex parameterized queries from benchmarks and real workloads. Our algorithm for populateCache achieves low geometric mean sub-optimality (1.2) even for complex queries using relatively few plans, and scales well to large query logs. The mean latency of our ML model based getPlan technique (~ 210μ sec ) is between one to four orders of magnitude faster compared to prior PQO techniques. The mean sub-optimality is low (1.05), and the 95 th percentile sub-optimality (1.3) is between 1.1× and 25× lower compared to prior techniques. Finally, we present an efficient algorithm for getPlan that leverages execution time information in query logs to circumvent inaccuracies of the query optimizer's cost estimates.
Monolithic integration of 1.55 micron photodetectors with GaAs electronics for high speed optical communications

Integrated optoelectronics has shown exciting promise for high speed optical communication systems. For better system performance and lower cost, monolithic optoelectronic integrated circuits (OEICs) are highly desirable. A novel optoelectronic integration technology for high performance OEICs was proposed and partially developed and termed Aligned Pillar Bonding (APB) process. The work began with applying GaAs-based Epitaxy-on-Electronics (EoE) technology to integrate matched pairs of 1.55 micron InGaAs photodetectors with high speed GaAs electronics, which requires the direct growth of InGaAs on lattice-mismatched GaAs substrates using molecular beam epitaxy (MBE). A customized OEIC chip was designed and fabricated. Lattice-mismatched MBE growth was studied and InGaAs photodetectors on GaAs were produced using the relaxed buffer growth. However, the device performance and uniformity deteriorated significantly from those on lattice-matched InP substrates, and thus unsuitable for high speed OEICs. Aligned pillar bonding (APB) process was hence proposed. APB integrates lattice mismatched materials using aligned, selective area wafer bonding at reduced temperature. The photonic device structures are grown on their lattice matched substrates under optimal growth condition. These structures are patterned into pillars, aligned and bonded into the designated wells on the electronic chips. Subsequent substrate removal and device fabrication results in high density OEICs. 1.55 micron InGaAs photodetectors on GaAs were demonstrated using reduced temperature Pd-assisted wafer bonding, resulting in superior device performance. While the conventional dry etching techniques are impractical to pattern the desired deep pillars, electron cyclotron resonance (ECR) enhanced reactive ion etching (RIE) of InP using chlorine/helium chemistry has been developed, resulting in fast, deep, smooth, and highly anisotropic etching at room temperature. The etching characteristics have been calibrated for both InP and GaAs. Fast etching of InGaP, InA1As, AlAs, and GaP has also been demonstrated. The etched pillars were subsequently bonded onto a OEIC chip, and initial study of small area pillar to well bonding was performed. APB allows independent optimization of both photonics and electronics for OEIC integration, inherits the wealth of the existing electronics industry, maintains good planarization and high density, permits low parasitics and high performance, and is naturally compatible with large scale manufacturing. Thesis Supervisor: Clifton G. Fonstad Title: Professor of Electrical Engineering Thesis Supervisor: Eugene A. Fitzgerald Title: Associate Professor of Electronic Materials
Exploring the differential effects of aging on controlled and automatic inhibitory tasks

5 Chapter One: An Introduction to Cogntive Aging . 6 The Social Context of Aging . 6 Understanding Age-Related Cognitive Decline Processing Resource Theories. 10 Processing Speed Theory . 11 Sensory Function . 16 Working Memory . 22 Inhibition . 26 Summary . 30 Chapter Two: Aging and Inhibition – A Review of the Literature . 32 What is Inhibition? 32 The Development of a Taxonomy . 33 The Controlled v Automatic Inhibition Distinction Applied to Aging Research . 38 Controlled/Effortful Inhibitory Tasks . 38 1. Interference Control . 38 2. Cognitive Inhibition . 45 3. Behavioural Inhibition . 48 4. Occulomotor Inhibition. 52 Automatic Inhibition . 53 1. Automatic Cognitive Inhibition . 53 2. Inhibition of Recently Inspected Stimuli . 59 Summary and Future Directions . 61 Chapter Three: Exploring the Differential Effects of Aging on Controlled and Automatic Inhibitory Tasks . 67 Introduction . 68 Method . 71 Participants. 71 Procedure and Stimuli . 75
Motivational Factors and Intended Efforts in Learning East Asian Languages Among Thai Undergraduate Students

The objective of the current study was to investigate undergraduate students’ motivation in learning three East Asian languages (Chinese, Japanese, and Korean), with intended effort used as a measure of motivation, based on Dörnyei’s L2MSS theory (2005) and five other predictors. The study’s participants were 95 undergraduate students, recruited by convenient random sampling on a voluntary basis, eight of whom volunteered to participate in interviews. Descriptive data and Pearson correlations were used to identify language learning motivations and the relationship between predictors and the intended effort, while a qualitative content analysis was used to support quantitative findings. The results revealed that the participants showed high levels of motivation in learning East Asian languages. A strong linear relationship was found between L2 learning experience, with all languages studied, and the ideal L2 self component. Moreover, the factor of intended effort had a positive relationship with instrumentality-promotion (r = .651, p = .000), international posture (r = .275, p = .003), and cultural/community interest (r = .426, p = .000) in Chinese learners, cultural/community interest (r = .433, p = .015) in Japanese learners, and international posture (r = .446, p = .015) in Korean learners. Nonetheless, instrumentality-prevention and intended effort were negatively related in Japanese learners (r = -.420, p = .019). The study recommends a comprehensive study be undertaken to investigate the role of L2 learning experience and its importance in L2 learning.
The effects of educational short message service messages about emergency scene management on perceived stress and satisfaction among the family caregivers of patients with mental disorders

Background and aims: Family caregivers have significant role in managing psychiatric emergencies in the time interval between their request for emergency medical services (EMS) and ambulance arrival at the emergency scene. This study aimed at assessing the effects of educational short message service (SMS) messages about emergency scene management (ESM) on perceived stress and satisfaction among the family caregivers of patients with mental disorders who requested EMS. Methods: This randomized controlled trial was conducted in 2019–2020 using a two-group posttest-only design. Participants were sixty family caregivers of patients with mental disorders in Mashhad, Iran, who called the EMS center and requested EMS. They were continuously recruited and randomly allocated to an intervention or a control group. Participants in the control group received routine educations, while participants in the intervention group received routine educations and SMS-based educations about ESM. Data were collected using a demographic questionnaire, a researcher-made caregiver satisfaction questionnaire, and the Cohen’s Perceived Stress Scale. Data analysis was performed via the SPSS software (v. 25.0). Results: Most participants were female (53.3%) and their mean age was 44.30±13.03 years. The mean score of perceived stress in the intervention group was significantly less than the control group (P=0.001), while the mean score of caregiver satisfaction in the intervention group was significantly more than the control group (P=0.001). Conclusion: SMS-based education about ESM is effective in significantly reducing perceived stress and enhancing satisfaction among the family caregivers of patients with mental disorders.
Analyzing and Discussing Human Factors Affecting Surgical Patient Safety Using Innovative Technology: Creating a Safer Operating Culture

Introduction Surgical errors often occur because of human factor–related issues. A medical data recorder (MDR) may be used to analyze human factors in the operating room. The aims of this study were to assess intraoperative safety threats and resilience support events by using an MDR and to identify frequently discussed safety and quality improvement issues during structured postoperative multidisciplinary debriefings using the MDR outcome report. Methods In a cross-sectional study, 35 standard laparoscopic procedures were performed and recorded using the MDR. Outcome data were analyzed using the automated Systems Engineering Initiative for Patient Safety model. The video-assisted MDR outcome report reflects on safety threat and resilience support events (categories: person, tasks, tools and technology, psychical and external environment, and organization). Surgeries were debriefed by the entire team using this report. Qualitative data analysis was used to evaluate the debriefings. Results A mean (SD) of 52.5 (15.0) relevant events were identified per surgery. Both resilience support and safety threat events were most often related to the interaction between persons (272 of 360 versus 279 of 400). During the debriefings, communication failures (also category person) were the main topic of discussion. Conclusions Patient safety threats identified by the MDR and discussed by the operating room team were most frequently related to communication, teamwork, and situational awareness. To create an even safer operating culture, educational and quality improvement initiatives should aim at training the entire operating team, as it contributes to a shared mental model of relevant safety issues.
Impact of interaction between cavity flow and mainstream on the performance of a model trapped vortex combustor

In trapped vortex combustors, radial strut serves as a critical component for it determines the interaction between cavity flow and mainstream and thus combustion and emission performances. Aiming at this topic, a trapped vortex combustor comprising interchangeable aerodynamic multipoint fueling setup, which have different strut width but same passage area, is designed. Experimental studies are carried out to investigate the combustion efficiency and emission performance. The configuration with wider struts exhibits excellent ability of NOx reduction in all operating conditions. However, relatively higher level of carbon monoxide and hydrocarbon are produced especially under cavity-only conditions, and thus the corresponding combustion efficiencies are lower. Nonreacting computational fluid dynamics results show that it is difficult for cavity flow to rush to the tail of bluff body because slenderer struts cannot provide sufficient protection. Thus, flow pattern and mixing of cavity flow and mainstream are influenced. Residence time of cavity-fore flow is calculated using a novel approach referred to as difference of tracer-pulse response. Reacting flow simulations show a different flow structure from reacting flow. It reveals that cavity flow can partially rush to the tail of bluff body through the channel behind the slenderer struts of configuration-1. However, the mixture fraction and temperature behind the bluff body of configuration-1 are still lower, and thus the NOx formation rate is relative lower.
Effect of melatonin in children with neurodevelopmental disabilities and sleep disorders

Objectives: The aim of this study is to assess the efficacy and side effects of melatonin use in a population of children with neurodevelopmental disabilities who had sleep disorders. Methods: This is a cross-sectional study conducted in the pediatric neurology clinic at King Abdulaziz Medical City. A designed questionnaire was given to the parents to inquire about the sleep characteristics of their children before and after using melatonin. The patients' demographic data were collected and different parameters before and after starting melatonin were compared. Categorical variables were summarized and reported in terms of frequency and percent (n%). Continuous variables were reported in terms of mean and standard deviation. Results: A total of 23 patients were enrolled in our study, of which 15 (65.22%) were male. The mean age was 5.83 ± 3.07 years. For melatonin dose, 9 (39.13%) received 1 mg, 8 (34.78%) received 2 mg, and 6 (26.09%) received over 3 mg. Regarding melatonin duration of use, 7 (30.43%) received melatonin for 0 to 6 months, 7 (30.43%) received it for 7 to 12 months, and 9 (39.13%) received it for over a year. Significant differences were observed in time taken to fall asleep (P =0.046), the number of times the child woke up at night (P =0.071), total sleep time within 24 hours (P =.011), and time taken to wake up (P =.007), while no significant difference was observed in the number of naps taken during the daytime (P =.801). There were no major side effects reported. Conclusion: Melatonin had a significant impact on total sleep time and quality during the pre and post assessment of children with neurodevelopmental disabilities and sleep disorders.
Integrative data reuse at scientifically significant sites: Case studies at Yellowstone National Park and the La Brea Tar Pits

Scientifically significant sites are the source of, and long‐term repository for, considerable amounts of data—particularly in the natural sciences. However, the unique data practices of the researchers and resource managers at these sites have been relatively understudied. Through case studies of two scientifically significant sites (the hot springs at Yellowstone National Park and the fossil deposits at the La Brea Tar Pits), I developed rich descriptions of site‐based research and data curation, and high‐level data models of information classes needed to support integrative data reuse. Each framework treats the geospatial site and its changing natural characteristics as a distinct class of information; more commonly considered information classes such as observational and sampling data, and project metadata, are defined in relation to the site itself. This work contributes (a) case studies of the values and data needs for researchers and resource managers at scientifically significant sites, (b) an information framework to support integrative reuse at these sites, and (c) a discussion of data practices at scientifically significant sites.
Gamma Oscillations and Emotional Memory

Increased visual gamma band activity is known to relate to memory and encoding in cognitive tasks and has been shown to be present during arousing compared to neutral stimulus processing. Here, we set out to investigate whether gamma activity is stronger for later remembered compared to later forgotten emotional pictures. Thirty-two healthy participants underwent a passive viewing task in which they viewed 208 (104 arousing (52 pleasant and 52 unpleasant) and 104 neutral) pictures from the International Affective Picture System (IAPS) database while we simultaneously recorded their electroencephalogram (EEG). Immediately after, they performed a recognition task including the 208 target pictures they saw before and 104 new pictures (52 arousing (26 pleasant and 26 unpleasant) and 52 neutral) as lures. We found that arousing pictures (unpleasant ones in particular) were better remembered compared to neutral pictures. Importantly, gamma activity was enhanced for remembered compared to forgotten pictures and this effect was stronger for arousing pictures. We conclude that previous findings regarding enhanced gamma as a signature of subsequent memory generalizes to emotional memory. Our findings therefore shed new light on the role of visual gamma band activity in arousal and memory formation.
Unsynchronised fault-location technique for three-terminal lines

This study describes a new fault-location technique using negative-sequence voltage for three-terminal lines. The ratios between the negative-sequence voltage magnitudes measured at each terminal are utilised to first determine the faulted section and then to estimate the exact fault location within the section. Since the current data is not deployed, the influence of inherent errors of current transformers can be avoided. The proposed method can accurately locate the unbalanced faults, that is, single-phase-to-ground, double-phase-to-ground, and phase-to-phase faults, regardless of the fault resistance and pre-fault conditions and without any need to identify the fault type. The method requires only the negative-sequence reactance behind each terminal which can be estimated by the short-circuit analysis with an acceptable accuracy. Reliability and practicality of the proposed method make it an attractive option to include in numerical protective relays. Simulation experiments with different fault cases reveal the capability of the proposed method.
Improved Performance of MoS2 FETs using AlN/Al2 O3 dielectric and Plasma Enhanced Atomic Layer Deposition (PEALD)

Molybdenum disulfide (MoS2 ) transistors are emerging as an exciting material system for future electronics due to their unique electrical properties, twodimensional (2D) nature and atomically thin geometry. This ultra-thin-body (UTB) semiconductor considerably reduces current leakage and enables gate-to-channel control. The homogeneous growth of sub-10 nm dielectrics on 2D materials remains challenging. We demonstrate high-performance MoS2 FETs at low temperature (150°C) using the plasma-enhanced Atomic layer deposition (PEALD) technique. The device exhibits a high on/off current ratio of about 106 , the field-effect mobility of 9.5 cm2 /Vs, and a subthreshold swing (SS) of 171 mV/dec, which is comparable to the similar structure of the top gate device. In addition, we have demonstrated contact resistance on back-gate MoS2 FETs with and without dielectric capping
Comparison of Axillary Digital and Infrared Forehead Thermometer

Introduction: Although digital thermometers have made the temperature recording easy, quick and safe, with the risk of mercury completely excluded, there is still a risk of transmission of infection from one individual to another. Infrared thermometers offer a non-touch, rapid and convenient method of temperature recording, with virtually no risk of disease transmission. We conducted a study to assess and compare temperature recordings from an infrared forehead thermometer and axillary digital thermometer during fever, and once the fever subsides. Methods: Hundred patients attending the out-patient department of Department of Pediatrics at Dr.B. R Ambedkar medical college and hospital from September 2019 to December 2019, or those admitted in the wards with a complaint of fever were screened using two techniques – Axillary temperature recording using a digital thermometer and a forehead temperature was recorded using a non-contact infrared forehead thermometer. Patients were given antipyretics to treat the fever and temperature was again recorded once the fever subsided using the same method. Two medical personnel were trained to screen and record the respective findings from each method and they were blinded from the other outcome of other recording. Results: The mean IFR temperature measured in the febrile phase was 100.85 (± 0.76), which was significantly higher than the mean AD temperature, 100.21 (± 0.74). (p-value <.0001). In the afebrile phase as well, the mean IFR temperature was significantly higher than the mean AD temperature. Conclusion: IFR thermometers do provide an advantage of no-touch technique over the digital thermometer. However, as the results showed a weak correlation between IFR and axillary digital recordings, it is suggested that IFR thermometers be used for screening of children for fever as it decreases the contact and reduces the infection.
AN ECONOMIC ANALYSIS OF MIXED FARMING IN THE SCARCITY AREA OF WESTERN MAHARASHTRA

"AN ECONOMIC ANALYSIS OF MIXED FARMING IN THE SCARCITY AREA OF WESTERN MAHARASHTRA" by MARUTI NARHARI WAGHMARE Department of Agricultural Economics Mahatma Phule Krishi Vidyapeeth, Rahun 413 722, Dist. Ahmednagar, Maharashtra, India 2004 Research Guide Dr D B Yadav Department Agricultural Economics The present investigation has been undertaken to examine costs and returns, resource productivities, employment and income generated on different size groups of farms in the irrigated and ramfed regions m the scarcity area of Western Maharashtra The study covers the primary data collected from 180 mixed farms l e 90 each from the irrigated and ramfed regions by survey method for the normal agricultural year 1999-2000 The sample farms have been categonzed m to the predetermined size classes viz, small (upto 2 00 ha), medium (2.01 to 4 00 ha) and large farms (above 4 01 ha) for the purpose of analysis The data on various aspects of farm business were analysed to work out the estimates of per hectare and per animal resource use pattern, costs, returns and profitability of the crop production activity, livestock activity and for farm as a whole on different size groups of fanns m the ungated and ramfed regions The analysis was further extended to work out the resource productivities, resource use efficiencies and employment and income generated on the farms
Golinski’s Speed Reducer Problem Revisited Using Genetic Algorithm

There are many constraints that constitute the Gear Box Design. Golinski’s Speed reducer problem is studied and the weight of the Gear box is minimized. This is done by considering certain design variables of the Gear box, applying Optimization algorithms that provide results which agree upon a resulting weight that is minimum satisfying the concerned design variables.
Development of a carcass sanitizing spray system for small and very small slaughterhouses

Development of a Carcass Sanitizing Spray System for Small and Very Small Slaughterhouses. (December 2006) Jose Gabriel Rodriguez, B.S., La Salle University Chair of Advisory Committee: Dr. Alejandro Castillo Small and very small slaughterhouses generally spray lactic acid for carcass decontamination utilizing a hand held sprayer. Even though this tool represents a very small investment, it may present important disadvantages such as uneven delivery of the spray over the carcass surface. If the decontamination treatment is not applied properly, the untreated areas of the carcass will still have high bacterial loads present and could be a source for recontamination of the areas that have been treated. A sanitizer spraying system (sanitizing halo system) was designed and assembled. The sanitizing halo system was tested at the Rosenthal Meat Science and Technology Center, Texas AM then they were sprayed with 2% L-Lactic at 55°C with the sanitizing halo system. The other 13 halves were sprayed by the RMSTC employees utilizing a hand held sprayer. Counts of aerobic and mesophilic bacteria obtained from carcasses sprayed with the sanitizing halo system and the hand held sprayer were both significantly lower than the control counts. In addition, coliforms counts were below the detectable limit for the sanitizing halo system and the hand held sprayer.