Miracle-dz/UniFAR-FTUs huggingface dataset:
COMPUTER SIMULATION OF AN AIRCRAFT SEAT AND OCCUPANT(S) IN A CRASH ENVIRONMENT: PROGRAM SOM-LA SOM-TA USER MANUAL

Abstract : A three dimensional mathematical model of a seat, occupant(s), and restraint system has been developed for use in aircraft crashworthiness analysis. Programs SOM-LA (Seat/Occupant Model - Light Aircraft) and SOM-TA (seat/Aircraft Model - Transport Aircraft) combine a lumped parameter model of aircraft occupants with a finite element model of the seat structure. SOM-LA models a single occupant, whereas SOM-TA has the capability to model up to three passengers. The intent of these programs is to aid in evaluation of the performance of aircraft seat and restraint systems in crash environments. Because the programs have been written for use primarily by engineers concerned with the design and analysis of seats and restraint systems, an effort has been made to minimize the input that is required to describe the occupants. Characteristics of two standard occupants, one dummy and one human, are included within the program, and an option is provided to simulate other occupants by providing additional input data. The structural model includes beam elements and has a maximum capacity of approximately 450 degrees of freedom, as determined by array dimensions within the programs. The beam elements can accommodate large plastic deformations and include the capability for cross section reduction due to local instabilities.
Reut and Beck columns: effects of end gravity force, translational and rotational inertias Columnas de Beck y Reut: efectos de una fuerza de gravedad en el borde libre, inercias traslacionales y rotacionales

The stability of Reut and Beck columns subjected to any combination of gravity and non-conservative (fixed-line or follower) compressive axial forces is presented using the dynamic formulation. The proposed method is general capturing the static (or divergence) buckling as well as the dynamic (flutter) instability of cantilever columns. Special attention is given to the effects of the end gravity force, translational and rotational inertias along the member. Analytical results are intended to capture the limit on the range of applicability of the static or Euler’s method in the stability analysis of slender cantilever columns, and to define the transition from static instability (with zero frequency) to dynamic instability (“flutter”). Finally, the comparison between the characteristic stability equations of slender Reut and Beck columns is presented.
Multi-level conversion: high voltage choppers and voltage-source inverters

The authors discuss high-voltage power conversion. Conventional series connection and three-level voltage source inverter techniques are reviewed and compared. A novel versatile multilevel commutation cell is introduced: it is shown that this topology is safer and more simple to control, and delivers purer output waveforms. The authors show how this technique can be applied to either choppers or voltage-source inverters and generalized to any number of switches. <<ETX>>
RUM, a recursive update putty-semi-putty vintage production model: sectoral estimation results for Germany and the Netherlands

1 Introduction In this paper we present the estimation results obtained using the RUM putty-semi-putty vintage production model as described in more detail in van Zon (1994). 'RUM' stands for 'Recursive Update Model', a name which is rather general, but which refers to the fact that one of the central features of the model is that its behaviour at the aggregate level is obtained by means of a set of straight forward recursive update rules which are applied at a more disaggregated level. The application of these rules in the context of a direct-search estimation procedure has enormous practical advantages over the specification of a full vintage model. We will come back to this later. The principle reasons why we developed the RUM variant of a putty-semi-putty vintage production model instead of using an aggregate production function approach are first that we feel that technological change does not fall as manna from heaven : it must be bought and paid for. Secondly, many of the improvements in production processes are linked with embodied technological change, while third 'standard' vintage model estimation procedures are relatively tedious and computer time-consuming and are a practical barrier to a successful application of vintage models as part of a larger macro-sectoral model. We have tried to find a way to jump this barrier by means of taking an approximating shortcut, while retaining the idea of the embodiment of technological change and the 'technology induced' scrapping of old equipment. More in particular, we have tried to find a way to bypass the cumbersome calculations involved in maintaining a complete 'book-keeping' account of all individual vintages which have come into existence 'almost from the beginning of time'. 1 The RUM model is based on a putty-semi-putty vintage production structure. It is the existence of smooth substitution possibilities ex-post which enables us to compress the book-keeping account mentioned above in just a few equations which are directly relevant for aggregate behaviour. Putty-Clay and Clay-Clay vintage production models as they were first introduced by Johansen (1959) and Salter (1960) require such a book-keeping account when economic scrapping is endogenised. However, if the latter is not the case, then a more simple approach can be taken, as, for instance, the HERMES modellers have done (d'Alcantara and Italianer (1982)). The latter have assumed that scrapping is either only of the technical kind or economic scrapping takes place at a fixed rate …
Design and implementation of a CMOS Modulated Light Camera

Modulated Light Cameras represent a breed of cameras designed specifically to capture intensity modulated light. This is because using coherent detection it is possible to lift a signal of interest out of the background noise and thus increase the precision of measurements. This work presents a camera designed to detect the phase of amplitude modulated light. By implementing an in-pixel demodulation, wide-field detection of the phase of light is possible. The camera provides 32 by 32 pixels, each with a pitch of 115 μm with a fill factor of 16 %. This pixel used in the camera introduces a novel tuning mechanism that matches the camera to the frequency of operation and light conditions. This enables the camera to work at high modulation depths, and increases the detection frequency to 50 MHz. The camera also provides an improved linear response without compromising on dynamic range and pixel size. The noise response of the camera is also improved as compared with previous work performed. The camera has been demonstrated in wide-field range measurements of a scene (Imaging LIDAR). It has also been applied to wide-field heterodyne interforemetry and in ultra-stable interferometry.
The calibration/validation of a Mississippi Sound/Bight model

A regional scale forecast modeling system of the Mississippi Sound/Bight and adjoining estuaries and bays has been developed as part of the Northern Gulf of Mexico Littoral Initiative (NGLI), a multi-agency program spearheaded by NAVOCEANO and USEPA Office of Gulf of Mexico Program. The system, based on the model called ECOMSED, provides a reliable means of predicting the littoral circulation and the salinity and temperature structure of the region. The modeling framework adopts a high-resolution orthogonal curvilinear grid which resolves the relevant bathymetric and coastline features, especially in the vicinity of the barrier islands and ship channels. In order to ensure that the model is capable of predicting the oceanography of the Mississippi Sound/Bight, a thorough calibration and validation effort has been conducted against field observations during September 2000. Point-to-point and spatial comparisons of sea surface elevation, temperature, salinity and water currents have been conducted. The calibration and validation efforts have been supplemented by rigorous analyses to understand the sensitivity of the model predictions to various forcing functions. The estuarine processes controlled by winds and freshwater discharges have been identified and quantified for Mobile Bay, Biloxi Back Bay, Bay St. Louis and Mississippi Sound/Bight through a series of model sensitivity simulations. Estimates of the variances in model predictions have been made using a First Order Variance Analysis (FOVA) method. Percent contribution of bathymetry, temperature and salinity boundary conditions, meteorological conditions and freshwater inflows to variances in model prediction has been determined. The bathymetry and freshwater flows are found to contribute most in the variances in temperature, salinity and transport in the Mississippi sound area. Where as wind plays a major role in the variances in model prediction in the Mississippi Bight (mid shelf) region. The ECOM model, calibrated and validated in this study, is currently in operational mode in the Major Shared Resource Center (MRSC) of NAVOCEANO at Stennis Space Center, Mississippi and the model results are available in the NGLI website at www.navo. navy.mil/NGLI.
Power Minimisation Techniques for Testing Low Power VLSI Circuits

Power dissipation has become a significant concern in deep submicron VLSI and a substantial amount of research has been conducted in order to develop power minimisation techniques. While many techniques have investigated power minimisation during the functional mode of operation, an emerging research area is power minimisation during testing. Power minimisation during test application is important since it increases yield and reliability. This paper presents a review of power minimisation techniques for testing low power VLSI circuits recently proposed by the authors.
Design Consideration of Half-Bridge LLC Resonant Converter

LLC resonant converters display many advantages over the conventional LC series resonant converter such as narrow frequency variation over wide range of load and input variation and zero voltage switching even under no load conditions. This paper presents analysis and design consideration for the half bridge LLC resonant converter. Using the fundamental approximation, the gain equation is obtained, where the leakage inductance in the transformer secondary side is also considered. Based on the gain equation, the practical design procedure is investigated to optimize the resonant network for a given input/output specifications. The design procedure is verified through an experimental prototype of the 115W half-bridge LLC resonant converter.
VALIDATION OF HEAT FLUX TECHNOLOGY TO ASSESS ENERGY EXPENDITURE DURING EXERCISE

There are limitations to current portable technology to estimate energy expenditure (EE), which may limit the accuracy when applied to free-living individuals. The KAL-X SensorTM (Lifechek, LLC, Pittsburgh, PA) uses heat flux technology to estimate EE. The accuracy of this device has not been assessed across levels of body mass index (BMI). The purpose of this study was to examine the validity of the KAL-X SensorTM to measure EE across different modes and intensities of physical activity. Twenty-four subjects (age = 33.8 ± 8.5 yr, BMI = 27.55 ± 3.9 kg/m2) performed two exercise (treadmill walking, stationary cycling) sessions with each lasting 30 minutes. Walking included three 10-minute progressive intervals of 2.5 mph, 0%; 3.0 mph, 0%; and 3.0 mph, 5%. Cycling included three 10-minute progressive intervals of 50 rev/min, 0.5 kg; 60 rev/min, 0.5 kg; and 60 rev/min, 1.0 kg. The criterion measure of EE was indirect calorimetry (IC). A KAL-X SensorTM was placed on the upper arm and at the level of the xyphoid process. EE during 30 minutes of walking for the KAL-X SensorTM (arm sensor = 94.5 kcal, chest sensor = 100.9 kcal) was significantly lower than EE measured using IC (166.5 kcal) (p<0.05). EE during 30 minutes of cycling for the KAL-X SensorTM (arm sensor = 76.4kcal, chest sensor = 90.1 kcal) was significantly lower than EE measured using IC (138.0 kcal) (p<0.05). The level of BMI did not affect the pattern of results, nor did arm circumference or skinfold measured at the bicep or tricep. These results indicate that there are limitations of the KAL-X SensorTM to provide an accurate estimate of EE during walking and cycling exercise. Additional research is needed to determine the accuracy of the KAL-X SensorTM to estimate EE during other forms of exercise, lifestyle activity, and free-living activity.
Heterogeneous integration of EO polymers with micro-mechanical resonant structures

A method is introduced to mechanically bias an electro-optic (EO) polymer modulator by heterogeneous integration with mechanical resonant structures. Biasing is achieved by changing the path-length of one arm of a Mach-Zehnder (MZ) interferometer by mechanically bending the waveguide structure. Feasibility of integrating microelectromechanical systems with EO polymers is investigated, and the mechanical biasing concept is experimentally demonstrated by integrating EO polymer waveguides with a piezoelectric element (PZ). When a 3 kHz signal is applied to the PZ, a pilot tone is generated and its second harmonic (at 6 kHz) is minimized by applying DC voltage to the PZ, thus tuning the modulator to quadrature. This method avoids using external biasing components, eliminates electrical bias drift, and allows combination of the functions of biasing instrumentation on the modulator chip, thus reducing size, weight, and power consumption of the photonic link by 2 to 3 orders of magnitude.
The introduction of a 'learning in the workplace' component for an undergraduate IT program and its impact on professional accreditation

A new learning in the workplace and community policy (LiWC) at Victoria University has been introduced to ensure that graduates are job and career ready. The policy mandates that all programs incorporate at least a 25% workplace contextual learning component by 2010. For the IT undergraduate program, compliance with this policy poses a number of significant challenges, not least of which is the meeting of professional accreditation criteria. Acquiring a recognized professional body accreditation, like that of the Australian Computer Society (ACS), is pivotal for all IT Australian programs, in that, it is a vital quality assurance measure and it enhances program marketability. For an ACS accreditation, the course structure and content of the IT program is examined against the Society‘s defined core body of knowledge (CBOK) which covers both generic and ICT specific skill sets. This paper describes the current Bachelor of Science in Information Technology degree structure with respect to the ACS‘s CBOK. Within this framework, a possible strategy is proposed for realizing the University‘s LiWC policy whilst conforming to accreditation requirements. Finally the advantages and disadvantages of the proposed approach are discussed.
Control system analysis and design of a resonant inverter with the variable frequency variable duty cycle scheme

This paper proposes a general modelling analysis method for a complete closed-loop control system for resonant inverters, such as LC series resonant inverter, LLC and LCC series-parallel resonant inverters, which use variable frequency variable duty cycle scheme. A half-bridge series resonant induction cooker with the variable frequency asymmetrical pulse width modulation (VFAPWM) control is used as a modelling example. Two control loops are implemented for this control system, by which the inverter is operated at zero-voltage-switching (ZVS) over wide load range. Phase-locked loop (PLL) is used as frequency tracking control, asymmetrical pulse width (APWM) as power regulation. The complete closed-loop dynamic model of a half bridge series resonant inverter system is solved. Then, the analysis and design of these control loops are discussed, and design considerations are provided. Finally, experiment results are given.
Light field head-mounted display with correct focus cue using micro structure array

A new type of light field display is proposed using a head-mounted display(HMD)and a micro structure array(MSA,lens array or pinhole array). Each rendering point emits abundant rays from different directions into the viewer’s pupil,and at one time the dense light field is generated inside the exit pupil of the HMD through the eyepiece.Therefore,the proposed method not only solves the problem of accommodation and convergence conflict in a traditional HMD,but also drastically reduces the huge data in real three-dimensional(3D)display.To demonstrate the proposed method,a prototype is developed,which is capable of giving the observer a real perception of depth.
Self-Concept Among Infertile Women Receiving Oocyte Donation and Fertile Women

Background: One of the technologies used to assist fertility is oocyte donation. Although there is sufficient information about medical aspects of oocyte donation; the psychological aspects of this treatment are not well-known. Self-concept investigates psychological aspects of people and therefore the aim of this study is aimed to compare self-concept of infertile women undergoing oocyte donation and fertile women. Method: In this descriptive-analytical study, 106 women selected using convenience sampling were divided into two groups of infertile women undergoing oocyte donation and fertile women. Data gathering tool in this study was two questionnaires including demographic information questionnaire and Rogers’ standardized self-concept questionnaire. Data was analyzed using chi-square and t-test with the help of SPSS20 software. Results: The findings showed that self-concept of the majority of participants in both groups were weak. The score of infertile women undergoing oocyte donation was higher than fertile women and the difference between two groups was significant (P=0.045). Conclusion: Based on the results, it can be said that infertility and treatment using oocyte donation weakens one’s self-concept. Therefore, it is necessary for authorities to make arrangements in order to evaluate mental health of infertile women undergoing oocyte donation.
Comparison between different ways to calculate the induced no-load voltage of PM synchronous motors using finite element methods

In this paper two different ways of calculating the induced no-load voltage of permanent magnet synchronous motors (PMSM), by the use of a finite element method (FEM) program, have been compared. Neither of the two calculation methods require a FEM software package that can perform time-stepping. The number of required static FEM-calculations is limited to just a few, or even to one. The calculations are performed on five motor geometries. The results are compared to values obtained from time-stepping FEM-calculations, and to the measured induced no-load voltages of the five manufactured prototype motors. It can be seen that the least time-consuming method is accurate enough in most of these cases. The exceptions, in this study, are when there are relatively large airgaps and/or when the stator teeth are saturated.
A Framework for Enhancing Big Data Integration in Biological Domain Using Distributed Processing

Massive heterogeneous big data residing at different sites with various types and formats need to be integrated into a single unified view before starting data mining processes. Furthermore, in most of applications and research, a single big data source is not enough to complete the analysis and achieve goals. Unfortunately, there is no general or standardized integration process; the nature of an integration process depends on the data type, domain, and integration purpose. Based on these parameters, we proposed, implemented, and tested a big data integration framework that integrates big data in the biology domain, based on the domain ontology and using distributed processing. The integration resulted in the same result as that obtained from the local integration. The results are equivalent in terms of the ontology size before the integration; in the number of added items, skipped items, and overlapped items; in the ontology size after the integration; and in the number of edges, vertices, and roots. The results also do not violate any logical consistency rules, passing all the logical consistency tests, such as Jena Ontology API, HermiT, and Pellet reasoners. The integration result is a new big data source that combines big data from several critical sources in the biology domain and transforms it into one unified format to help researchers and specialists use it for further research and analysis.
PENENTUAN JALUR TERPENDEK PADA PELAYANAN AGEN TRAVEL KHUSUS PENGANTARAN WILAYAH SEMARANG BERBASIS SIG DENGAN ALGORITMA BRANCH AND BOUND

Bagi perusahaan jasa transportasi, seperti pada studi kasus agen travel, pemilihan jalur atau rute perjalanan sangat penting untuk diperhatikan. Rute yang lebih pendek pada umumnya akan menghasilkan biaya dan waktu yang lebih singkat. Oleh karena itu diperlukan suatu cara untuk menentukan rute terpendek agar perjalanan menjadi lebih efektif dan efisien. Masalah ini dapat dikategorikan sebagai masalah TSP ( Travelling Salesperson Problem ). Hal ini dapat diselesaikan dengan membangun Sistem Informasi Geografis Pencarian Jalur Terpendek (SIGPEJAP). Sistem ini dikembangkan dengan menggunakan metode Unified Process dan metode pencarian jalurnya menggunakan algoritma Branch and Bound . Algoritma ini cukup baik dalam memberikan solusi optimal pada masalah TSP, termasuk pada pemilihan rute perjalanan. Sistem yang dihasilkan dapat membantu agen travel dalam memilih rute terpendek yang sebaiknya dilewati oleh sopir.
Information Sharing During Crisis Management in Hierarchical vs. Network Teams

This study examines the differences between hierarchical and network teams in emergency management. A controlled experimental environment was created in which we could study teams that differed in decision rights, availability of information, information sharing, and task division. Thirty-two teams of either two (network) or three (hierarchy) participants (N=80 in total) received messages about an incident in a tunnel with high-ranking politicians possibly being present. Based on experimentally induced knowledge, teams had to decide as quickly and as accurately as possible what the likely cause of the incident was: an attack by Al Qaeda, by anti-globalists, or an accident. The results showed that network teams were overall faster and more accurate in difficult scenarios than hierarchical teams. Network teams also shared more knowledge in the difficult scenarios, compared with the easier scenarios. The advantage of being able to share information that is inherent in network teams is thus contingent upon the type of situation encountered.