Miracle-dz/UniFAR-FTUs huggingface dataset:
Level : Master in Business Studies Knowledge retention in Vietnam-based Management Consulting SMEs

Aim: The overall aim of the thesis is to describe and understand how Vietnam-based management consulting SMEs retain organizational knowledge in cases of employees’ departure and further develop strategies for knowledge retention. Methodology: Qualitative research via semi-structured interviews in 2 Vietnam-based management consulting SMEs (1 medium-sized company and 1 small company) was conducted. Findings: Knowledge retention is still a rather new concept in the Vietnamese context, interestingly, however; some knowledge retention initiatives have been unconsciously implemented by Vietnam-based management consulting SMEs. Small-sized companies, which suffer more from resource scarcity in terms of human, finance, time, tend to be less active in knowledge retention than medium-size companies. More efforts have been put in retaining tacit knowledge by management consulting SMEs in Vietnam. Among the factors influencing knowledge retention, leadership is seen to be the key factor to decide the successful implementation of knowledge retention of Vietnam-based management consulting SMEs. Vietnamese culture is also found to have indirect impacts (either positive or negative) on knowledge retention through other factors (leadership, organizational culture, personal attitudes), however the effect of national culture on knowledge retention varies from firm to firm, largely depends on SMEs’ leadership. Practical implications: Considering the important roles of leaders in the implementation of knowledge retention, training on leadership skills is highly recommended. Furthermore, trainings on interpersonal skills and personal attitudes towards knowledge retention also need attention. On top of that, it is essential to build up an organizational culture that facilitates knowledge retention and provides appropriate organizational supports (affordable IT systems that suit SMEs’ needs, extrinsic together with intrinsic rewards). Last but not least, knowledge retention activities are recommended to be integrated into daily operations to cope with the issues related to time constraints faced by management consulting SMEs.
Proposal of isolated outlet socket and plug using capacitive power transfer

This paper proposes the novel isolated capacitive power transfer outlet socket and plug using comb type capacitor. The detachable comb capacitor is proposed as a power supply connector. The target power at the first stage is decided as 100W. At first, optimization of structure and material of capacitive connectors is investigated in order to realize easy attachment and detachment. After consideration, the comb type structure is selected and Teflon is employed as an insulator. The proposed system is based on LC series resonance. The two types of load-side rectifier are employed then compared from the view point of transfer power. From simulation analysis, it was clarified that higher power transfer was realized using capacitor-input type rectifier. Power transfer of 15W was experimentally realized using choke-input type rectifier. Further enhancement of power transfer is discussed using equivalent circuit obtained from experimental result. Power transfer of 15W is experimentally realized using the current experimental equipment.
Terahertz performance of integrated double-slot antennas

We present the terahertz performance of integrated lens antennas consisting of a double-slot planar feed antenna and a synthesized elliptical lens. The radiation pattern and the impedance of the planar feed are computed using the method of moments; the collimating action of the lens is modeled using the physical-optics approach based on the Huygens principle. In the frequency range from 1.5 to 3 THz the measured antenna efficiency and radiation pattern correspond fairly well with the results of simulations approving this simulation technique as a reliable tool for the antenna design.
Power management of multi-radio Mobile Nodes using HSDPA interface sensitive APs

The multi-radio interface MN (Mobile Node) has battery problem with power consumption from each interface. To reduce power consumption, we adopt that the power of the interface of the unused radio interface should be off. However, the MN can have network discovery problems. Therefore we propose the HSDPA interface sensitive AP (Access Point) and the power management procedure for the muti-radio interface MN using the WiFi interface and the HSDPA interface. We will show the reduction of energy consumption using the proposed AP and the power management procedure based on a power measurement experiment.
Three-phase voltage doubler rectifier based on three-state switching cell for Uninterruptible Power Supply applications using FPGA

This paper presents a three-phase voltage doubler rectifier based on three-state switching cells for Uninterruptible Power Supply (UPS) applications using FPGA. Its main features are: high power factor, reduced conduction losses, weight and volume, simple control strategy based on One-cycle Control (OCC), and connection between input and output enabling the use of inverter and bypass. A theoretical analysis, simulation results and preliminaries experimental results from a 9 kW development stage lab model are presented.
Aplicación de un algoritmo genético al cálculo de la función de distribución del gas de electrones

Resumen En este trabajo consideramos la aplicación de un algoritmo genético, como herramienta de optimización, al cálculo de la función de distribución de pares del gas de electrones para la cual proponemos una generalización de la aproximación hipercadena cuántica. La expresión propuesta contiene ciertos parámetros que se determinan minimizando, mediante el algoritmo genético mencionado, la energía del sistema. Comparamos las funciones así obtenidas con las correspondientes calculadas mediante simulaciones Monte Carlo realizadas por otros autores tanto en la versión variacional como difusional. La comparación muestra un muy buen acuerdo especialmente con los resultados de Monte Carlo difusional.
Nonlinear MPC based on the state-space form of RBF-ARX model

A state-space form of the RBF-ARX model based nonlinear predictive controller is presented in this paper. The state-space representation proposed is built from an offline identified RBF-ARX model, and its state variables have no need to be estimated online using a state observer. The system nonlinearity is handled by applying the operating-point dependent RBF-ARX model, that is, a hybrid pseudo-linear time-varying model which is composed of Gaussian radial basis function (RBF) neural networks and linear ARX model structure. The nonlinear MPC proposed in this paper can make use of the future operating-point-related information, if that can be obtained in some cases, to improve control performance. Stability issue is discussed, and the effectiveness of the predictive control strategy presented is also showed through simulation result.
A Method of Driver Fatigue Detection based on Multi-features

Driver fatigue detection based on one feature is usually inaccurate. To solve the problem, a method of driver fatigue detection based on multi-features is proposed. We have analyzed the relationship between driver facial features, driving routes and vehicle handing behavior. Data of three features are collected by driving simulator and divided into two levels of awake and fatigue based on driver subjective assessment. After being discretized and normalized, the partial data is as the input data of neural network. The neural network is trained by BP algorithm. Other data is as the test samples. Experimental results show that compared with one feature, the method has higher accuracy rate and lower false positive rate.
Restructuring of Housing and Ethnic Segregation: Recent Developments in Berlin

In Germany, and particularly in Berlin, the fall of the Wall in 1989 and the years following reunification were accompanied by a large influx of immigrants. These 'new' migrants in Berlin are added to the long-resident guestworker population in the western part of the city. This paper investigates the housing situation of the increasing population of foreigners before and after unification as well as the changing segregation of ethnic minorities. After a comparison of the different housing systems in East and West Berlin and their consequences for ethnic segregation in the 1980s, the main elements of the housing transformation since 1990 are identified and related to the changing residential patterns of foreigners. The patterns of four selected nationalities with divergent migration motives are analysed in more detail. The paper draws attention to differences between East and West Berlin as well as to recent convergences between the two parts of the city.
Micrcapsule array fabricaed by ice-printing technology for on-site biochemical detection

In this paper, we proposed a portable, easy-to-operate, low cost and anti-fouling microcapsule array aiming for multitarget biochemical assay. This novel microcapsule array is achieved by ice printing and photopolymerization sealing. Only tiny amount of sample (2μL for each microcapsule) is needed to fulfill the assay. All the reagents required for the analysis are tightly sealed within the microcapsule in frozen or liquid form. With the aid of automatic equipment, the ice-printed microcapsule array chip can be massively produced, which enables its disposable use. Nitrite was chosen as a model target as a proof of concept. An instant qualitative detection by naked eyes was achieved without the need of any external sophisticated instruments. The quantitative detection was realized simply by camera photographing and image processing.
SmARTweet: A Location-Based Smart Application for Exhibits and Museums

In this paper, we present "Smartweed", a Locationbased application developed within DATABENC, a high technology district for Cultural Heritage management. In particular, the project aims at exploiting several location-based services and technologies to realize a smart multimedia guide system able to detect the closest artworks to an user, make them able to "tweet" and "talk" during tourists' visit and capable of automatically telling their stories using multimedia facilities. Moreover, we have deployed and tested the installation of some sensors that, using Wi-Fi technology, allow to the users' mobile devices to detect the closest artwork in a museum environment. Once an artwork has been detected, the related identifier is retrieved and a multimedia story is delivered to user by means of proper multimedia delivery and user-profiling techniques, in order to facilitate and make more stimulating the visit. The artworks detection was performed by a localization algorithm that we designed and tested in our laboratory rooms. As case of study, we show an example of "tweeting and talking artworks" as a location-based application of a sculptures' art exhibition within the Maschio Angioino castle, in Naples - Italy.
Tin sulfide thin films prepared by thermal evaporation and sulfurization

Tin sulfide thin films are prepared by a two-step process, thermally evaporated Tin and sulfurization. Five sulfurization temperatures are used to investigate the characteristics of SnS thin films. It is observed that Tin and Sulfur in the formation films decrease and increase with the increasing sulfurization temperature, respectively. Two main diffraction peaks appear at 2θ=32.04° and 66.8°, which are assign to SnS phase. A very weak peak of SnS2 is observed at 2θ=62.96°. Raman spectra show a strong peak of SnS at 218 cm-1 and a weak peak of SnS2 at 315cm-1. From transmittance measurement, two and three absorption transitions are observed at lower and higher sulfurization temperatures, respectively. Their corresponding bandgaps of these absorption edges are 1.27, 1.41 and 3,9 eV, respectively, which are determined by a linear fitting absorption curve.
Position-dependent diffusion coefficients and free energies from Bayesian analysis of equilibrium and replica molecular dynamics simulations

Bayesian inference is used to obtain self-consistent estimates of free energies and position-dependent diffusion coefficients along complex reaction coordinates from molecular dynamics simulation trajectories. Effectively, exact solutions for the dynamics of a diffusive model are matched globally to the observed molecular dynamics data. The approach is first tested for a simple onedimensional diffusion model, and then applied to the dihedral-angle dynamics of a peptide fragment dissolved in water. Both long equilibrium molecular dynamics simulations and short, appropriately initialized, replica simulations are used to sample the short-time dynamics of the peptide–water system. In both cases, accurate estimates of free energies and diffusion coefficients are obtained. New Journal of Physics 7 (2005) 34 PII: S1367-2630(05)87003-X 1367-2630/05/010034+14$30.00 © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft 2 DEUTSCHE PHYSIKALISCHE GESELLSCHAFT
Chapter 3 B AYESIAN MODELLING FOR INCLUSIVE DESIGN UNDER HEALTH AND SITUATIONAL INDUCED IMPAIRMENTS : A N OVERVIEW

Predictive pointing enables smart interfaces, which are capable of inferring the user intent, early in the pointing task, and accordingly assisting on-display target acquisitions (pointing and selection). It adopts a Bayesian framework to effectively model the user pointing behaviour and incorporate the present perturbations induced by situational impairments as well as inaccuracies in the utilised sensing technology.
A Low Phase Noise Quadrature LC VCO Using Capacitive Common-Source Coupling

A low phase noise quadrature LC VCO with inherent tail-current shaping is presented. Two identical differential LC VCOs are locked in quadrature with a capacitor connected between their common-source nodes. This capacitor further drives the oscillators into a tail-current shaping mode, which increases their oscillation amplitude and reduces their phase noise. A multi-band 1.9 GHz differential nMOS quadrature LC VCO prototype has been fabricated in a 0.25 mum BiCMOS process. The measured phase noise is -124.4 dBc/Hz at a 1 MHz offset from a 2.07 GHz carrier while the circuit dissipates only 3 mW from a 1.5 V supply. The quadrature VCO is tunable from 1.75 GHz to 2.1 GHz and the VCO core only occupies 0.625mm2
Object-based region proposal via multiple cues extraction

Video foreground Object Segmentation acting as a vital job in various applications such as fraud detection, behavior analysis. Recognition of object is a high-level task which is done by extracting the Foreground object. This task is difficult due to Background Characteristics, fast moving object, ghosting, background modeling and foreground aperture. The object segmentation is achieved by background frame subtraction, temporally adjacent frames, Joint Difference Algorithm and a combination of different approaches (CoD) etc., but still there exist an inefficiency to segment the dominant object from a video. Our contribution is to extract dominant objects by generating overlapped regions on the object in the frame using watershed of gradient magnitude. Then boundary cues are extracted from the Bag of Regions (BoR) for proposing an object like a region and restrain weak boundaries. The proposed object regions are extracted from this BoR using Extended Histogram of Oriented Gradient. Color (L∗a∗b color space), Texture, Shape (Ex-HOG) features, Color and texture histogram and their intersection are used for hierarchical segmentation to segment a dominant object from a video. This multiple cues used to propose object region. This approach has tested on standard benchmark dataset such as Segtrackv2 and the results were analyzed.
Time reversal beamforming in MISO-UWB channels

Multiple-Input Single-Output (MISO) Ultra Wide Band (UWB) communications over a multipath channel is investigated. After introducing a tractable discrete-time multipath MISO channel model accounting for correlation between multiple channels, analytical results for single-user transmissions are drawn in the following two cases: no precoding at transmitter with All-Rake receiver vs. time reversal (TR) at transmitter with One-finger Rake receiver. Channel state information at both transmitter (CSIT) and receiver (CSIR) is assumed. Optimality of TR conditioned on One-finger Rake receiver structure is proved. Robustness brought by TR combined with One-finger Rake with respect to lack of correlation between channels vs. no precoding is shown. Simulations with realistic reference channels show that combining time reversal with multiple transmit antennas amplifies the performance improvement due to each technique when used alone.
Enhancement of Transdermal Delivery of Indomethacin and Tamoxifen by Far-Infrared Ray-Emitting Ceramic Material (BIOCERAMIC): A Pilot Study

BIOCERAMIC have been found to modulate various biological effects. Our earlier published research on various cell lines demonstrated that BIOCERAMIC promoted microcirculation, upregulated calcium-dependent nitric oxide and calmodulin, and exerted an antioxidant effect by increasing hydrogen peroxide scavenging ability. The development of pain relief systems requires most possible minimum doses and methods for effective local control of pain, so as to protect liver and renal function. There is also clinical necessary to develop targeted delivery of estrogen inhibitor in the breast using a local drug release system, to protect the breast from the increased cancer risk associated with the use of estrogen therapy. We compared the viscosity of BIOCERAMIC irradiated water and control water, and found that BIOCERAMIC might weaken the hydrogen bonds. Such breaks are caused by the loss of hydrogen bond covalence resulting from electron rearrangement. The purposes of this study were thus to investigated a transdermal drug delivery model using Franz cell apparatus for Indomethacin and Tamoxifen. The results showed that BIOCERAMIC enhanced the diffusion and permeability of the drugs. Therefore, we suggest that BIOCERAMIC might enhance the penetration performed by hydrogen bond weakening due to physical induction, and may facilitate local drug delivery in transdermal systems.
Graphene integer quantum Hall effect in the ferromagnetic and paramagnetic regimes

Starting from the graphene lattice tight-binding Hamiltonian with an on-site U and long-range Coulomb repulsion, we derive an interacting continuum Dirac theory governing the low-energy behavior of graphene in an applied magnetic field. Initially, we consider a clean graphene system within this effective theory and explore integer quantum Hall ferromagnetism stabilized by exchange from the long-range Coulomb repulsion. We study in detail the ground state and excitations at = 0 and = ± 1, taking into account small symmetrybreaking terms that arise from the lattice-scale interactions, and also explore the ground states selected at = ± 3, ±4, and ±5. We argue that the ferromagnetic regime may not yet be realized in current experimental samples, which at the above filling factors perhaps remain paramagnetic due to strong disorder. In an attempt to access the latter regime where the role of exchange is strongly suppressed by disorder, we apply Hartree theory to study the effects of interactions. Here, we find that Zeeman splitting together with symmetry-breaking interactions can in principle produce integer quantum Hall states in a paramagnetic system at = 0, ±1, and ±4, but not at = ± 3 or ±5, consistent with recent experiments in high magnetic fields. We make predictions for the activation energies in these quantum Hall states which will be useful for determining their true origin.
Zur Pharmakologie zugelassener Antibiotika in der Rinderpraxis

Zusammenfassung Gerade vor dem Hintergrund der aktuellen Diskussionen um den Einsatz von Antibiotika in der Nutztierpraxis soll diese Übersicht zur Pharmakodynamik und Pharmakokinetik der aktuell in der Rinderpraxis zugelassenen Antibiotika zur Auffrischung des Wissens dienen. Die wichtigsten pharmakologischen Eigenschaften der β-Laktam-Antibiotika, Sulfonamid/Trimethoprim-Kombinationen, Tetrazykline, Aminoglykosidantibiotika, Fluorchinolone, Makrolidantibiotika, Phenicole, Lincosamide und Polypeptidantibiotika werden speziell für den Einsatz in der Rinderpraxis vorgestellt.
Modeling and Analysis of VSC-Based HVDC Systems for DC Network Stability Studies

A modeling approach is presented in this paper in order to investigate instabilities originating from dc-network resonances in voltage-source converter HVDC (VSC-HVDC) systems. Through frequency-domain modeling, it is shown that the VSC-HVDC system can be represented as a feedback interconnection of two subsystems. These subsystems are defined in this paper as a dc network impedance connected to a VSC dc-side power-dependent admittance. The conditions in which this admittance has a negative conductance are investigated since they can amplify dc network resonances. It is found that when the VSC that controls the direct voltage injects power into the dc network, the mentioned conductance becomes negative above certain frequencies. In addition, the impact of weak ac grids, control system delays, and other direct voltage controllers on the studied conductance is investigated. The theoretical findings are verified through time-domain simulations.
Nearest and Non-Nearest Three Vector Modulations of NPCI Using Two-Level Space Vector Diagram—A Novel Approach

Space vector modulation (SVM) is a widely used method for multilevel inverters. Most of the SVM methods are nearest three vector (N3V) based schemes. Therefore, several researchers have proposed advanced implementation algorithms with reduced complexity for N3V methods. However, topologies like neutral point (NP) clamped inverter (NPCI) require some distinctive methods (called as non-N3V methods) to balance NP voltage for high modulation index and low power factor operations. Currently, the existing non-N3V methods exercise highly complex algorithms for duty ratio calculation and subtriangle identification. This paper presents a new approach, suitable for both N3V and non-N3V methods, with reduced implementation complexity. The proposed algorithm is based on an equivalent two-level space vector diagram and does not require any trigonometry, coordinate transformation, or volt-second balance solution. Unlike other carrier-based methods, it can change the switching sequence as well as the duration of redundant vectors. Moreover, the proposed approach does not require extra steps for implementing hybrid modulation and it can also be extended to multilevel topologies. One N3V, two non-N3V, and hybrid methods are developed using the proposed modulation algorithm, and are compared in detail. Simulation and experimentation on a three-level NPCI verify the validity of the proposed algorithm.
Power quality analysis using complex wavelet transform

This paper deals with analysis of power signals using complex wavelet transform. In the first step power signals containing sag, swell, harmonic, sag-harmonic, swell harmonic, transient and spike were generated using Matlab. Various features like energy, kurtosis, entropy, skewness etc. were extracted using ‘db4’ and complex wavelet decomposition up to 11 levels. Next, an extensive database of these features was created. A neural network based on these parameters was trained and tested. It has been shown that the classification accuracy achieved by using complex wavelet is higher than obtained by the use of ‘db4’ wavelet.