Miracle-dz/UniFAR-FTUs huggingface dataset:
Detection signal-to-noise ratio versus bit cell aspect ratio at high areal densities

As areal density in hard drives increases, the bit aspect ratio (BAR) becomes an increasingly critical design issue. In this paper, we use the detection signal-to-noise ratio (SNR) as a system-level indicator to establish the relationship between the optimal BAR and all major recording system parameters that relate to the head/medium combination and servo as well as the read channel. We address practical and fundamental issues including thermal stability, medium and additive system noise, and equalization and track misregistration. The results of our analysis generally agree with the recent consensus to move toward lower BARs but also caution that the optimal BAR is a strong function of the servo capability. The results of our BAR analysis also indicate that at high areal densities, the ratio of PW50 to the bit cell is considerably smaller than found in today's drives.
An ARDL Approach on the Nexus of Foreign Direct Investment and Export in Nigeria

: The opening of the Nigerian economy to foreign investors via economic restructuring, to strengthen export accomplishment for efficient return resulting in increased exports and export competitiveness through foreign direct investments, has met with some pressures leading to neglect in output and closure of some businesses. This necessitated the study to examine foreign direct investment’s impact on export accomplishment in Nigeria from 1986 to 2019. Foreign direct investment, trade openness, money supply, rate of inflation and interest were the explanatory variables while export was the control variable. The Auto-Regressive Distributed Lag (ARDL) model was employed using time series data. The results of the analysis showed a positive effect of foreign direct investment on the country’s export though insignificant. Trade openness has a significantly positive influence, whereas money supply, inflation rate and interest rate were negative on export accomplishment. The conclusion derived from the results is a positive but insignificant relationship between foreign direct investment and export accomplishment in Nigeria while the reverse is the case for money supply, inflation and interest rate. The recommendation is that the Nigerian government through its policy formulators should encourage stable and sustainable foreign direct investment in a conductive economic and political environment for improvement of the nation’s productivity, international trade competitiveness, technological advancement and external reserves via export.
Development of a Practical Rutting Characterization Method for Bituminous Mixtures

The main objective of materials testing is to simulate in-situ field conditions as closely as possible, including loading conditions, climatic conditions, etc. Also, the test method should be easy, inexpensive, simple, and efficient to conduct to become an acceptable standard laboratory testing method for many agencies. Based on these reasons, a new test method employing repetitive axial loading with confinement was developed to evaluate the rutting(permanent deformation) of asphalt concrete. The new laboratory test protocol was developed based on the study of the various structural analysis and field data. This protocol divides asphalt layer(s) into three categories depending upon the depth. Different temperatures and vertical stress levels were used in these areas.
Effect of Problem Based Learning Model Combination Flipped Classroom Against Problem Solving Ability

The purpose of this study was to examine the effect of the problem-based learning model combined with the flipped classroom on students' problem-solving abilities in learning the Islamic Religious Education chapter of Zakat. The type of research used is quasi experiment. This research was conducted on Islamic Religious Education learning in Class VIII SMPN Gondang Nganjuk Indonesia. The research subjects were students of class VIII A (experimental class) and class VIII B (control class). Hypothesis test using SPPS application with one way ANOVA test. The results showed that (1) the results of the implementation score of the problem based learning model combination flipped classroom with an average score of 100 or good category; (2) the results of student learning activity scores taught using the problem based learning model with a combination of flipped classroom on students' zakat problem solving abilities, obtaining an average score of 86.7 better than the average score taught with the problem based learning model without a flipped combination. classroom which is 85.5; and (3) the results of hypothesis testing with one-way ANOVA test showed a significance value of 0.008 <0.05. The problem-based learning model combined with the flipped classroom has a better effect on the problem-solving abilities of students' Islamic education learning compared to the problem-based learning model without the flipped classroom combination, as shown by the average score of the problem-solving ability test of Islamic Religious Education chapter on students' Zakat. The problem based learning combination of the flipped classroom is 79.36 and the problem based learning model without the combination of the flipped classroom is 74.96. The problem-based learning model combined with the flipped classroom can be an alternative learning model to improve problem-solving skills in the Islamic Education Learning chapter of students' Zakat.
A Risk Assessment Tool Using a CMMI Quantitative Approach

 Abstract—A notable purpose of offshoring is to gain competitive advantages in software development business. While offshoring offers great opportunities, it also creates a new trend of threats in software development due to differences in culture, languages, time zones, and development processes deployed. Maximizing the profits of the offshoring relies on strong remote project management skills including remote risk analysis. It is important that potential risks should be detected promptly and there should be quantitative indicators that can help to precisely monitor risks in a remote manner. In that view, we present an offshoring risk assessment tool which uses our formally defined CMMI quantitative approach. This tool is implemented on IBM JAZZ platform to enable quantitative risk monitoring and assessment for application life cycle support.
Explicit Approach to Design of Stainless Steel Columns

The paper describes a design procedure for stainless-steel columns failing by flexural buckling. In the approach, the stress-strain curve is assumed to be expressed as a Ramberg-Osgood curve, defined in terms of the initial modulus (\iE\d0), the 0.2% proof stress (σ\d0\d.\d2), and the parameter \in. It is shown that the column curve can be described in terms of the Ramberg-Osgood parameters by adopting a Perry curve as the basic strength curve, and expressing the imperfection parameter in terms of \iE\d0, σ\d0\d. \d2, and \in. By using a Perry curve, the design procedure is explicit. This contrasts with the iterative approach described in the ASCE load and resistance factor design (LRFD) specification for the design of cold-formed stainless steel structural members. The proposed strength curves are compared with those from tests on stainless steel columns. It is shown that the coefficient of variation of the ratio of test strength to design strength is lower using the proposed design approach than when using the ASCE specification; thus, the proposed approach is more accurate than that described in the ASCE specification. It is also more efficient because it is explicit. Using the comparison with test results, the resistance factor to be used with the proposed design procedure is derived.
Piezoelectric Passive Distributed Controllers for Beam Flexural Vibrations

Recent technological developments have made available efficient bender transducers based on the piezoelectric effect. In this paper an electrical circuit analog to the Timoshenko beam is synthesized using a Lagrangian method and by paralleling capacitive flux linkages to rotation and transverse displacement. A Piezo-ElectroMechanical (PEM) beam is conceived by uniformly distributing piezoelectric transducers on a beam and interconnecting their electric terminals via the found analog circuit, completed with suitable resistors. The high performance features of the synthesized novel circuit include the following. (i) The circuit topology is extremely reduced, the used components are all but one two-terminal elements, and the only two-port network needed is an ideal transformer. (ii) One and the same dissipative circuit ensures a multiresonance coupling with the vibrating beam and the optimal electrical dissipation of mechanical vibrations energy. (iii) For a prototype of a PEM beam, the design of the analog circuit is possible and the obtained nominal values of the circuital elements ensure that can be technically realized without any external feeding. The insertion of resistors in the analog circuit is determined according to two optimality criteria (namely minimization of strain energy time envelope and maximization of vibration time rate decay), based on specific engineering needs. The former seems to be suitable for applications in fatigue phenomena and the latter when the amplitude of vibrations must be rapidly decreased, independently of the initial conditions.
Revalorization of Waste Grape Skins from JuiceIndustry as a New Enological Product

1 Resumen . 3 1. Justification . 5 2. Objectives . 7 3. Introduction . 9 3.1 Grape marc antecedents . 9 3.2 Grape berry development . 11 3.3 Structural conformation of grapes . 25 3.4 Grape processing, producing grape marc . 29 3.5 Grape marc processing . 35 3.6 Developing grape marc applications . 43 3.7 Wine Quality . 44 4. Work Plan . 55 5. Scientific Results . 59 5.1 Global grape aroma potential and its individual analysis by SBSE-GC-MS. 60 5.2 Waste grape skins thermal dehydration: potential release of colour, phenolic and aroma compounds into wine . 71 5.3 Use of dehydrated waste grape skins as a natural additive for producing Rosé wines: study of extraction conditions and Evolution . 86 5.4 Pre-bottling addition of dehydrated waste grape skins to improve the color phenolic and aroma composition of red wines . 102 6. Results overview and further insights . 125 7. Conclusions . 131 8. References . 135 9. Annex . 147
Causes of Design Change Depending on Power Project-Types in Ghana

Design change is a common but significant problem in construction projects. Issues of delay, cost overruns, claims, and disputes in projects occur as a result. However, design change studies in the power-project area are less often discussed. As a result, the primary objective of this study was to identify important cause factors of design changes according to different power-project types in Ghana. Following a thorough assessment of the literature, 36 potential causes were identified, which were narrowed down by expert reviews to 30. In this study, power projects were classified into three categories: power plant, renewable, and distribution and transmission. The results indicate owner-related financial problems as the most important cause of design change for all three project types, followed by the second and third most significant in each of the categories, respectively: errors and omission in design and problems or unforeseen site conditions in power plant projects; deficient quality and quantity of resources and inflation and changes in interest and exchange rates in renewable projects; and problems or unforeseen site conditions and changes of plans in distribution and transmission projects. Based on the findings, power-project stakeholders are able to comprehend the dynamics of design change and develop effective design management strategies to reduce impact.
Real-Time Pressure Measurement Method Based on Rapid Phase Demodulation of Multi-Cavities F-P Sensor

In this paper, a novel method for real-time pressure measurement based on rapid phase demodulation of multi-cavities Fabry-Perot (F-P) sensor is proposed. In the demodulation system, according to the principle of low-coherence interference, birefringent crystals, polarizers and analyzers are used to obtain orthogonal signals, which can significantly reduce the influence of irrelevant F-P cavities on the demodulation result, indicating that the method is suitable for rapid demodulation of F-P sensors containing multiple cavities. Experimental results also confirm that the method is able to demodulate the signal of F-P MEMS sensor in real-time. By using the four-quadrant inverse tangent operation instead of differential cross multiplier algorithm to calculate the phase of the F-P sensor, pressure in the range of 110 kPa −200 kPa is measured in real-time, with the demodulation rate of 5 kHz. The measurement errors are less than 0.41 kPa, and the standard deviations are less than 0.25 kPa. The proposed method provides a new idea for the rapid demodulation of F-P sensors containing multiple cavities, and has great potential in promotion and applications of real-time pressure measurement, such as dynamic pressure of aero-engines, shock waves and so on.
Development and the Liberal Peace: What Does it Take to be a Trading State?

This article investigates the liberal idea that trade between two states reduces the likelihood of militarized conflict between them. Richard Rosecrance's argument that industrial-technological developments have made peaceful trading strategies more efficient today is examined in connection with the empirical literature on trade and conflict. Development affects the utility calculations of states: since the costs of seizing and holding a territory increase with increased development, and the relative utility of occupying the territory decreases, the chance that the expected utility of occupation will exceed the expected costs decreases with increased development. Likewise, since the utility of trade increases with increased development, then increased development also makes it more likely that the expected costs of breaking the trade bonds will exceed the gains to be expected from occupation. Consequently, the relationship between trade and conflict is contingent on the level of development. Using Cox regression, and introducing a new measure of interdependence based on a gravity model of trade, I demonstrate that there is a clear negative relationship between trade and conflict. However, this relationship is basically restricted to dyads consisting of two developed dyads. Development itself is strongly associated with peaceful behavior. The results also suggest that the democratic peace requires a minimum level of development to be efficient.
Securing the interactions between X clients.

The security of Xwindows is usually divided into authentication/authorization of connections, and authorization of Xclient interactions [5]. The first issue has been well-addressed in research through mechanisms such as xhost and xauth 1 . In this paper we discuss the approaches to the last issue: one of authorization. We present a taxonomy of different approaches and discuss the effectiveness of a lightweight mechanism which we proposed.
Towards a humanitarian logistics knowledge management system

Purpose – The aim of this paper is to offer a conceptual model and an associated taxonomy to support the development of a body of knowledge in support of the logistic response to a natural or man‐made disaster.Design/methodology/approach – Based on a literature review, the paper outlines the difficulties associated with the logistic response to a disaster, before discussing a generic approach to knowledge management. The literature review is then used to identify two potential models (the Supply‐Chain Operations Reference (SCOR) and the UK Defence Lines of Development (LOD)), which are then further developed and integrated in order to underpin a knowledge taxonomy.Findings – The paper proposes a model that combines both the SCOR and LOD models into a unified approach as a first step towards the development of a broad‐ranging reference source to support humanitarian logisticians and, thereby, improve the effectiveness and efficiency of the response to future disasters.Research limitations/implications – As.
GaAs-GaAsSb based heterojunction bipolar transistor

The fabrication of the first GaAs-GaAsSb based heterojunction bipolar transistor is reported. Maximum current gains of 25 at a base current of 1 mA have been measured on devices employing a p-type 1000 AA GaAs/sub 0.93/Sb/sub 0.07/ base doped at 1*10/sup 19/ cm/sup -3/ and GaAs emitter and collector regions with graded heterointerfaces. At present, devices so fabricated show unstable behaviour.
Pengaruh Persepsi Manfaat, Persepsi Kemudahan, Kepercayaan Dan Fitur Layanan Terhadap Tingkat Kepuasan Pelanggan Dalam Menggunakan E-Money Di Kota Palembang

Penelitian ini memiliki tujuan guna mengetahui persepsi manfaat, persepsi kemudahan, kepercayaan dan fiturlayanan berpengaruh secara individual dan secara simultan terhadap tingkat kepuasan pelanggan menggunakan E-Money pada masyarakat di Kota Palembang. Penelitian ini dilakukan dengan metode kuantitatif, pengolahan datadilakukan dengan menggunakan aplikasi SPSS versi 25. Populasinya ialah masyarakat di wilayah Kota Palembang yangmengetahui E-Money. Teknik sampling penelitian ini menggunakan teknik non probability sampling. Penelitian inimenggunakan sampel yang berjumlah 100 orang. Penelitian ini menggunakan metode analisis regresi linear bergandasebagai metode analisis data. Hasil analisis pada penelitian ini menerangkan bahwa persepsi manfaat, persepsikemudahan, kepercayaan dan fitur layanan secara positif dan signifikan serta secara simultan mempengaruhi tingkatkepuasan pelanggan menggunakan E-Money di Kota Palembang.
Optical Investigation of Transonic Wall-Jet Film Cooling

The evolution of increasing turbine inlet temperature has led to the necessity of full-coverage film cooling for the first turbine vane and blade. A new approach using high pressure steam injection cooling for transonic film cooling has been proposed by the authors. This paper presents first experimental results obtained under controlled conditions in a test model ejecting cooling air into air at atmospheric pressure thus enabling an experimental analysis of transonic film development under varying conditions. Data obtained with digitally analysed speckle interferometry, shearography, holographic interferometry and schlieren techniques are presented to discuss the possible use of this type of film cooling for intense surface cooling.
The non-stationary response of flexible pavements to moving loads

In this paper, the pavement surface deterioration is investigated based on field measurements of surface roughness profiles obtained in Sweden. A predictive function for surface deterioration, based on average gradient of yearly measurements of the road surface profile in Swedish road network, is proposed. In order to characterise the dynamic loads induced on the pavement by moving traffic a quarter car model is used. Afterwards a non-stationary stochastic approach is used to obtain the yearly response of the pavement to moving loads. The solution is in frequency–wavenumber domain and is given for a non-stationary random case as the pavement surface deteriorates in pavement service life thus influencing the magnitude of the dynamic loads induced by the vehicles. The effect of pavement surface evolution on the stress state induced in the pavement by moving traffic is examined for a specific case of quarter car model and pavement structure. The results showed approximately a 100% increase in the dynamic component of stresses induced in the pavement.
Closed Fuel Cycle and Minor Actinide Multirecycling in a Gas-Cooled Fast Reactor

The Generation IV International Forum has identified the Gas-Cooled Fast Reactor (GCFR) as one of the reactor concepts for future deployment. The GCFR targets sustainability, which is achieved by the use of a closed nuclear fuel cycle where only fission products are discharged to a repository; all Heavy Metal isotopes are to be recycled in the reactor. In this paper, an overview is presented of recent results obtained in the study of the closed fuel cycle and the influence of the addition of extra Minor Actinide (MA) isotopes from existing LWR stockpiles. In the presented work, up to 10% of the fuel was homogeneously replaced by an MA-mixture. The results are that addition of MA increases the potential of obtaining a closed fuel cycle. Reactivity coefficients generally decrease with increasing MA content. Addition of MA reduces the reactivity swing and allows very long irradiation intervals up to 10% FIMA with a small reactivity swing. Multirecycling studies show that a 600? MWth GCFR can transmute the MA from several PWRs. By a careful choice of the MA-fraction in the fuel, the reactivity of the fuel can be tuned to obtain a preset multiplication factor at end of cycle. Preliminary decay heat calculations show that the presence of MA in the fuel significantly increases the decay heat for time periods relevant to accidents (104–105 s after shutdown). The paper ends with some recommendations for future research in this promising area of the nuclear fuel cycle.
Analysis tools for the design of aluminium extrusion dies

The aluminium extrusion process is a forming process where a billet of hot aluminium is pressed through a die to produce long straight aluminium profiles. A large variety of products with different and complex cross-sections can be made. The insight in the mechanics of the aluminium extrusion process is still limited. Design of extrusion dies is primarily based on trial and error. The wasted scrap and time in these trail and error iterations, can be reduced by gaining more insight in the extrusion process. Numerical analysis is a valuable tool in obtaining that insight. In this thesis reports new developments for the analysis of the aluminium extrusion process are treated. The subject matter is presented in four chapters. Attention is focussed on three topics: • A comparison between experiments and simulations of container flow • Modeling the start-up of the extrusion process in an Eulerian formulation • Deriving a new finite element for ALE simulations Extrusion experiments have been performed at Boalgroup to visualize the flow inside the container during extrusion. These experiments are compared with simulations. The results of the simulations are steady state results that are post-processed to be comparable to the experimental results. If the simulations are not in agreement with the experiments, the material properties used in the simulations are adapted so the results agree. With this method it is possible to determine material properties under extrusion conditions. Correcting the dies after trial pressings is performed by die-correctors. The correctors use the first part of the profile (nose piece) to asses the work that has to be performed on the die. To be able to model this nose piece, is very valuable during designing of the die. In chapter 4 and 5 new strategies to simulate the shape of the nose piece are treated. In the last chapter the possibilities of the proposed strategy are demonstrated on a porthole die for a tube. The simulated nose piece is in very good agreement with the experimental results.