Miracle-dz/UniFAR-FTUs huggingface dataset:
Heavy Duty Truck Tire Engineering

In 1969, ja davisson, the goodyear tire and rubber company, presented the buckendale lecture at the SAE annual meeting. This paper, "design and application of commercial type tires", was a comprehensive summary of the state of the science of commercial truck tires. Included in the paper were tire design factors, performance properties, and application requirements of commercial truck tires. In the following 19 years, many changes have taken place in the design and application of commercial vehicles. Truck tires have experienced significant evolutionary change over this period. Radial truck tires were in the initial phase of application in the United States in 1969. Today they comprise 60 per cent of the total market and have expanded widely in both size and application. Computer aided engineering (cae) has become integral to tire development and production processes, thus enhancing the tire engineer's effectiveness and responsiveness. In this paper, tire engineering factors, performance properties, and application requirements are discussed. The interrelationship of these subjects is discussed specifically for radial heavy duty truck tires from the perspective of today's tire engineer (a).
CAUSES OF ACCIDENTS AT CONSTRUCTION SITES

The statistic of accidents at construction sites give us a picture that Malaysian construction industry is one of the critical sectors that need a huge and fast overhaul from the current site safety practices. Accident don’t just happen, they are caused by unsafe acts, unsafe conditions or both. Most accidents result from a combination of contributing causes and one or more unsafe acts and unsafe condition. In order to improve the overall safety performance we need to investigate the root causes of construction accidents. That knowledge could be utilised in formulating more conducive working conditions and environments at construction sites. Therefore, a study has been conducted to identify the causes of accident at construction sites. This study was started out by reviewing literature from journals, books and web pages. Then reported accidents cases kept by the Department of Occupational Safety and Health Malaysia (DOSH) were examined to investigate causes of accidents. Surveys using questionnaire forms were carried out to obtain data from respondents who are mainly contractors and the rest are developers and consultants firms all around countries that are well versed with the construction safety. The finding of this study reveals that accidents are the result of many contributing factors, causes, and sub causes. Some of the critical factors are unsafe method, human element, unsafe equipment, job site conditions, management, and unique nature of the industry. The causes of accidents in Malaysia were found to be similar to that mentioned in literature review. However, some of the causes are low in frequency of occurrence. The main cause of construction accidents found are the workers’ negligence, failure of workers to obey work procedures, work at high elevation, operating equipment without safety devices, poor site management, harsh work operation, low knowledge and skill level of workers, failure to use personal protective equipments and poor workers attitude about safety.
An Efficient Fault Tolerant Approach to Resource Discovery in P2P Networks

Current research into resource discovery in peer-topeer networks is largely focussed on the use of Distributed Hash Tables and multi-layered topologies. In this paper we present a resource discovery system capable of resolving keyword-value pair queries, based on a two-layered Chord ring architecture. We show how the base topology augmented with shortcuts between layers and selection of ring member nodes provides performance benefits and the potential for increased fault tolerance over other similar resource discovery systems.
Salinity, a climate-change factor affecting growth, domoic acid and isodomoic acid C content in the diatom Pseudo-nitzschia seriata (Bacillariophyceae)

ABSTRACT Freshening of the oceans is a predicted outcome of climate change. Marine phytoplankton organisms are in general affected by salinity changes and, given their key role in oceanic food webs and geochemical cycles, it is important to investigate the response of phytoplankton species to salinity changes. Diatom species of the genus Pseudo-nitzschia can form massive and, at times, toxic blooms, because several Pseudo-nitzschia species produce the neurotoxin domoic acid. Domoic acid can cause amnesic shellfish poisoning in humans and harm animals in the marine food web. The species Pseudo-nitzschia seriata can produce domoic acid in cold-water areas, like the Arctic. Hence, it is relevant to investigate the response of P. seriata to different salinity levels. Three strains of P. seriata were exposed to four different salinity levels (15, 20, 30 and 40). None of the strains grew at salinity 15, and maximum growth rates were found at salinity 30. All three strains contained toxins at salinities 20–40, with the highest cellular content occurring at salinity 20. The peak in toxin content was related to a significantly lower growth rate. However, the higher toxin content overrode the lower growth rate, ultimately resulting in a higher toxin potential at salinity 20. In addition to domoic acid, all strains contained isodomoic acid C in surprisingly high amounts, similar to the domoic acid content.
Prediction of High-Speed Planing Hull Resistance and Running Attitude - A Numerical Study Using Computational Fluid Dynamics

Accurate predictions of the resistance and running attitude are key steps in the process of hull design and manufacturing. The predictions have traditionally relied on model testing, but this technique is both expensive and time consuming. In this study, the performance of CFD simulations of planing hulls is evaluated using two commercial software: ANSYS FLUENT, developed by ANSYS, Inc., and STAR-CCM+, developed by CD-adapco. This was done by predicting the steady resistance, sinkage and trim angle of one semi-planing and one planing hull in calm, unrestricted water. The Reynolds averaged Navier-Stokes equations with the SST k-! turbulence model was used along with the volume of fluid method to describe the two-phase flow of water and air around the hull. Furthermore, a two degrees of freedom solver was used together with dynamic mesh techniques to describe the fluid-structure interaction. The simulations were performed with both fixed and free sinkage and trim to make careful comparisons of the software and with experimental data. The results from the fixed sinkage and trim simulations of the planing hull in FLUENT and STAR-CCM+ show a good consistency. However, there is a significant difference in the pressure resistance obtained from the two codes that could not be explained. The free sinkage and trim simulations were mainly conducted in STAR-CCM+ due to problems with obtaining a stable solution in FLUENT. Froude numbers between 0.447 and 1.79 were simulated and the results follow the same trends as what is seen in the experimental data. The calculated resistance, sinkage and trim angle show good correspondence to experimental data in the planing region, where the errors of the predicted values are below 10%.
Badem Çöğürlerine Aşılı Bazı Şeftali ve Nektarin Çeşitlerinin Uyuşma Durumlarının İncelenmesi Üzerine Bir Araştırma

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RANKING PROCEDURES FOR BICYCLE PROJECTS

This paper describes a project undertaken to develop ranking procedures to prioritise projects designed to improve the ability of the road network to safely carry cyclists. The project involved reviewing current Australian policies and procedures, conducting a state of the art review of literature in the relevant fields and relating all information to Western Australian (WA) conditions. The work was completed with a focus on the WA Government's road safety strategy of providing safer roads for cyclists. The authors draw together the quantitative and qualitative aspects associated with cycling projects, whether they be benefits or costs. Within the quantitative assessment valuations are placed on: (1) the safety implications of reduced crashes, and a lower risk of crashes; (2) the benefits of any change in modal choice and the presence of new users through the associated health, operational and resource cost savings; (3) the benefits of reductions in bicycle theft that a facility may provide; and (4) the total cost of the project including planning, design, construction and maintenance of the new facility. From a qualitative perspective issues related to level of service, coherence and directness, attractiveness and comfort of the facility, safety, environment and health, strategic issues and the effect on other users are all catered for in an event tree analysis. The final ranking of projects is then completed using a combination of the quantitative and qualitative assessment results to provide a prioritised list of all cycling projects considered. (a) For the covering entry of this conference, please see IRRD abstract no. 492019.
Evaluation of Deflection Criterion as a Basis for Equivalency Factors for Flexible Pavements Using Finite Element Method

The employment of computer techniques in engineering design work has become an irreversible trend, using computer as the tool for modeling, analysis, and design is now the established and preferred route. In most cases, simplifications are made to achieve ease in implementation, readily verifiable results, capabilities in self-correction of errors, and well defined scope of applications, all these are normally ranked above completeness and literal precision. The objective of this research study is to evaluate the Equivalent Single Axle Load Factors (ESALF) for flexible pavement following developed as apart of the research based on the theoretical approach, and using ESALF utilized in the AASHTO Guide for the Design of Pavement Structures for calibration which, basically depends on empirical background. To meet the objective, a technique utilizing finite element analysis is used in order to create numerical models using shell elements with SAP2000 V10 structural engineering program. The stresses created by these axle loads will result in a maximum deflection at the top of the subgrade layer. The recorded deflection mainly depends on the assumption of either equal contact wheel radius (equal contact area) criterion or equal contact tire pressure criterion. Each of the deflection values recorded is used to develop an ESALF through the ratio of deflection to maximum value caused by the 18-kip single axle load. In general, the results show a significant difference between AASHTO ESALF, and that of the Finite Elements Method for the two criteria considered, it is advisable to test other criteria for development of equivalency factors utilizing the theoretical approach. In addition it is advisable not to use the factors generated from the theoretical approach until further testing of other criteria like the lateral strain underneath the asphaltic surface layer.
Pengaruh Indeks Pembangunan Manusia (IPM) dan Pertumbuhan Ekonomi terhadap Tingkat Kemiskinan di Provinsi Sumatera Barat periode tahun 2013-2018

The purpose of this study was to determine the effect of HDI on poverty levels in Wast Sumatra, the efect of economic growth on poverty levels in West Sumatra, the effect of HDI ang economic growth on poverty levels in West Sumatra. This type of research is descriptive and associative, the data used is panel data where the research was conducted in West Sumatra in 2013-2018. This study uses the Eviews 10 Application, the model chosen is Random Effect. In the HDI variable obtained t value ≥ t-table value, meaning that there is a significant influence between HDI and poverty level. While the economic growth variable is obtained by t-count≤-t-table, meaning that there is no significant effect between economic growth on poverty levels. In addition, the F-calculated value of 40,48524 with a probability value of 0,000000≤0,05 means that there is a significant influence between the dependent variable on the independent variable. From this research, it is expected that government will further improve and equalize the quality of human resources in West Sumatra as well as a balance between capital-intensive and labor-intensive industries, so that economic growth can provide direct benefits for the people in West Sumatra.Keywords: kemiskinan, indeks pembangunan manusia, pertumbuhan ekonomi.
Numerical analysis of sheet cavitation on marine propellers, considering the effect of cross flow

ABSTRACT The research performed in this paper was carried out to investigate the numerical analysis of the sheet cavitation on marine propeller. The method is boundary element method (BEM). Using the Green’s theorem, the velocity potential is expressed as an integral equation on the surface of the propeller by hyperboloid-shaped elements. Employing the boundary conditions, the potential is determined via solving the resulting system of equations. For the case study, a DTMB4119 propeller is analyzed with and without cavitating conditions. The pressure distribution and hydrodynamic performance curves of the propellers as well as cavity thickness obtained by numerical method are calculated and compared by the experimental results. Specifically in this article cavitation changes are investigate in both the radial and chord direction. Thus, cross flow variation has been studied in the formation and growth of sheet cavitation. According to the data obtained it can be seen that there is a better agreement and less error between the numerical results gained from the present method and Fluent results than Hong Sun method. This confirms the accurate estimation of the detachment point and the cavity change in radial direction.
Analysis of installation and loading process for displacement piles by Discrete Element Model

The present work investigates the influence of installation technology on the response of a single pile under axial load. Installation and loading process for both jacked and screw piles has been analysed through a Discrete Element Model (DEM) approach, by means of the commercial software Particle Flow Code 3D v3.0 (Itasca). The Thesis is subdivided in two main parts. Firstly, CPTs tests in calibration chamber available in literature have been used as the starting point for the analysis of full scale CPT and the installation jacked pile. Issues deriving from the use of DEM for simulating the problem at hand are thereby discussed, elucidating the role played by key dimensionless geometrical parameters affecting the numerical simulation. In the second part, installation as long as loading process of a closed-ended jacked pile and the Full Displacement Pile (patented by BAUER Maschinen Group S.p.A.) in sands with different initial properties have been analysed. The role played by different parameters on pile response is discussed in light of the established knowledge in the subject.
Aerodynamics of Seeing on Large Transport Aircraft

Data were obtained in the full scale flight environment of the Kuiper Airborne Observatory (KAO) on the nature of turbulent shear layer over the open cavity. These data were used to verify proposed aerodynamic scaling relationships to describe the behavior of the turbulent layers and to estimate the optical performance of systems of various wavelengths operating within the KAO environment. These data and wind tunnel data are used to scale the expected optical effects for a potential stratospheric observatory for infrared astronomy (SOFIA) in which a telescope approximately 3.5 times larger than that on the KAO is envisioned. It appears that the use of combinations of active and passive aeromechanical flow control techniques can improve the optical behavior of systems in the SOFIA environment. Experiments to verify these potential improvements can be performed on the KAO with sufficient modifications to the cavity and aero-mechanical technique installations.
Capacities

This chapter argues that typical human subjects possess distinctive multisensory perceptual capacities. Empirical evidence and theoretical considerations support the claim that perceivers are differentially sensitive to novel intermodal features, such as identity, simultaneity, motion, causality, and flavor, that could not be perceived using one sense at a time nor using several senses working merely in parallel. In light of their role in grounding cognition and guiding action, such capacities belong to perception, rather than extraperceptual cognition, for the purposes of empirical and rational psychological explanation. Therefore, multisensory perceptual capacities can serve in psychological explanations that deal with subjects and their capacities, in contrast with just subpersonal processes and mechanisms. Multisensory perception targets new features in the world. The joint use of multiple senses thus extends human perceptual capacities.
Themes in Landscape Architecture Publishing: Past Trends, Future Needs

Many scholars acknowledge the need for rigorous research in landscape architecture to improve practice and teaching, and several recent studies have explored research trends in the discipline. This study continues this exploration by reviewing the articles published in the three prominent English-language landscape architecture journals: Landscape Journal, Landscape Review, and the Journal of Landscape Architecture. Specifically, this study analyzes the abstracts from 441 research articles to determine specific themes and publishing trends over 31 years (1982–2013). Findings indicate that “history” is by far the most prominent research theme, followed by “social and cultural processes and issues” and “aesthetics. ” Several themes—such as “sustainability and green infrastructure,” “participation and collaboration,” and “research methods and methodologies”—have become more prominent in recent years. However, topics of current social and political concern—such as “climate change,” “active living,” “energy,” and “health”—are not yet prominent themes in the research literature, and could be key areas for future contribution. With the exception of a few themes, findings also suggest a moderate degree of alignment between research and practice. The article concludes with recommendations for future areas of research that will better position landscape architecture as a research-oriented profession with broad social relevance.
Not lost in translation: Successfully replicating Prospect Theory in 19 countries

Kahneman and Tversky’s 1979 article on Prospect Theory is one of the most influential papers across all of the behavioural sciences. The study tested a series of binary financial (risky) choices, ultimately concluding that judgments formed under uncertainty deviate significantly from those presumed by expected utility theory, which was the prevailing theoretical construct at the time. In the forty years since publication, this study has had a remarkable impact on science, policy, and other real-world applications. At the same time, a number of critiques have been raised about its conclusions and subsequent constructs that were founded on it, such as loss aversion. In an era where such presumed canonical theories have increasingly drawn scrutiny for inability to replicate, we attempted a multinational study of N = 4,099 participants from 19 countries and 13 languages. The same methods and procedures were used as in the original paper, adjusting only currencies to make them relative to current values, and requiring all participants to respond to all items. Overall, we found that results replicated for 94% of the 17 choice items tested. At most, results from the 1979 study were attenuated in our findings, which is most likely due to a more robust sample. Twelve of the 13 theoretical contrasts presented by Kahneman and Tversky also replicated, with a further 89% replication rate of the total contrasts possible when separating by location, up to 100% replication in some countries. We conclude that the principles of Prospect Theory replicate beyond any reasonable thresholds, and provide a number of important insights about replications, attenuation, and implications for the study of human decision-making at population-level.
Cinderella Ate My Daughter: Dispatches from the Front Lines of the New Girlie-Girl Culture

The soft-psychology content is written in a conversational tone, and includes many anecdotes from the Orenstein household. It is fairly tedious to read conversation after conversation about women who have given-in to the marketing push and showered their daughters in pink ‘because little girls need to feel beautiful’ (p. 22). Orenstein does question these motives and seeks advice from academics and researchers, but no interesting conclusions are drawn.
A novel approach to the design and enumeration of Bode-type variable amplitude digital equalizers

This paper presents a novel approach to the design and enumeration of Bode-type variable amplitude digital equalizers. The frequency response of the resulting digital equalizers can be varied from that of an arbitrary shaping transfer function to its inverse by varying the value of a single variable multiplier. A set of three realizability conditions is developed for the design of digital equalizers having arbitrary shaping transfer functions. The results thus obtained are applied to the design and enumeration of a class of 51 bump digital equalizers, of which 50 are new (the remaining one was reported in the literature some time ago). An application example is given to illustrate the resulting digital equalizers.
Kinetic Study on Esterification of Ascorbyl Oleate Catalyzed by Lipase NS 88011

In this study, bisubstrate kinetics mechanism models were correlated with the experimental data of ascorbyl oleate using the new lipase preparation, Candida antarctica NS 88011, and kinetic parameters (Vmax, Km, and Ki) were estimated. The highest conversion (49.42 %) was observed at 1 h of reaction using the ascorbic acid/oleic acid molar ratio of 1:9, 70 ºC and 30 % of enzymatic loading. The Ping Pong Bi-Bi model showed better congruence with the experimental data for all the effects evaluated. The kinetic constants showed that the lipase had an identical affinity, with a value of 0.81 for both substrates and inhibitory constant (Ki) of ascorbic acid (1.959) much higher than oleic acid (0.0008). It has been demonstrated that lipase has good operational stability (14th cycle). The results obtained with the new immobilized enzyme are valuable to elucidate the reaction mechanism. In addition, it represents an important contribution to optimize the reaction and create strategies to increase the productivity of the esters of vitamin C.