Miracle-dz/UniFAR-FTUs huggingface dataset:
A Standardized and Cost-Effective VR Approach for Powered Wheelchair Training

Mastering wheelchair driving skills is essential for the safety of wheelchair users (WUs), yet the acquisition of these skills can be challenging, and training resources can be costly or not available. Technologies such as virtual reality (VR) have grown in popularity as they can provide a motivating training environment without the risks found in real-life training. However, these approaches often deploy navigation controllers which are different from the ones WUs utilise, and do not use a standardised approach in assessing the acquisition of skills. We propose a VR training system based on the wheelchair skills training program (WSTP) and utilising a sensor device that can be retrofitted to any joystick and communicates wirelessly with a Head-Mounted Display. In this paper, we present a first-validation study with fourteen non-disabled participants, split between a VR test group and a non-VR control group. To determine the acquisition of skills, participants complete tasks in real-life before and after the VR training, where completion time and length of joystick movements are measured. We also assess our system using heart rate measurements, the WSTP questionnaire, the simulator sickness questionnaire and the Igroup presence questionnaire. We found that the VR training facilitates the acquisition of skills for more challenging tasks; thus, our system has the potential of being used for training skills of powered wheelchair users, with the benefit of conducting the training in safely and in a low-cost setup.
The Relationship between All-Cause Natural Mortality and Copy Number of Mitochondrial DNA in a 15-Year Follow-Up Study

We explored the relationship between the copy number of mitochondrial DNA (mtDNA-CN) and all-cause natural mortality. We examined a random population sample in 2003/2005 (n = 9360, men/women, 45–69, the HAPIEE project) and followed up for 15 years. Using a nested case–control design, we selected non-external deaths among those free from baseline cardiovascular diseases (CVD) and cancer (n = 371), and a sex- and age-stratified control (n = 785). The odds ratios (ORs) of death were 1.06 (95%CI 1.01–1.11) per one-decile decrease in mtDNA-CN independent of age, sex, metabolic factors, smoking, alcohol intake and education. The age–sex-adjusted ORs of death in the second and first tertiles of mtDNA-CN vs. the top tertile were 2.35 (95% CI 1.70–3.26) and 1.59 (1.16–2.17); an increased risk was confined to the second tertile after controlling for smoking and metabolic factors. The multivariable-adjusted OR of CVD death was 1.92 (95% CI 1.18–3.15) in tertile 2 vs. the top tertile of mtDNA-CN, and for cancer-related death the ORs were 3.66 (95% CI 2.21–6.05) and 2.29 (95% CI 1.43–3.68) in tertiles 2 and 1 vs. the top tertile. In the Siberian population cohort, the mtDNA-CN was an inverse predictor of the 15-year risk of natural mortality, due to the greatest impact of CVD and cancer-related death. The findings merit attention for exploring further the role of mtDNA in human ageing and the diversity of mortality.
Rethinking student placement to enhance efficiency and student agency

Placement tests are used to support a particular need in a local context—to determine the best starting place for a student entering a specific programme of language study. This brief report will focus on the development of an innovative placement test with self-directed elements for our local needs at a university in Canada for students studying English or French as a second language. Our goals are to produce a more efficient assessment instrument while allowing students more agency through the process. We hope that sharing these details will encourage others to consider the potential of incorporating self-directed elements in low-stakes placement decision-making.
Arabic spellchecking: a depth-filtered composition metric to achieve fully automatic correction

Digital environments for human learning have evolved a lot in recent years thanks to incredible advances in information technologies. Computer assistance for text creation and editing tools represent a future market in which natural language processing (NLP) concepts will be used. This is particularly the case of the automatic correction of spelling mistakes used daily by data operators. Unfortunately, these spellcheckers are considered writing aids tools, they are unable to perform this task automatically without user’s assistance. In this paper, we suggest a filtered composition metric based on the weighting of two lexical similarity distances in order to reach the auto-correction. The approach developed in this article requires the use of two phases: the first phase of correction involves combining two well-known distances: the edit distance weighted by relative weights of the proximity of the Arabic keyboard and the calligraphical similarity between Arabic alphabet, and combine this measure with the JaroWinkler distance to better weight, filter solutions having the same metric. The second phase is considered as a booster of the first phase, this use the probabilistic bigram language model after the recognition of the solutions of error, which may have the same lexical similarity measure in the first correction phase. The evaluation of the experimental results obtained from the test performed by our filtered composition measure on a dataset of errors allowed us to achieve a 96% of auto-correction rate.
MicroRNA (miR)-124: A Promising Therapeutic Gateway for Oncology

Simple Summary MicroRNA-124 (miR-124) is a small non-coding RNA that regulates gene expression and is abundantly expressed in the brain and immune system. Dysregulated expression of miR-124 is associated with several cancer types, making it a potential therapeutic target in oncology. We demonstrate the potential of miR-124 as a target in various cancer types. Abstract MicroRNA (miR) are a class of small non-coding RNA that are involved in post-transcriptional gene regulation. Altered expression of miR has been associated with several pathological conditions. MicroRNA-124 (miR-124) is an abundantly expressed miR in the brain as well as the thymus, lymph nodes, bone marrow, and peripheral blood mono-nuclear cells. It plays a key role in the regulation of the host immune system. Emerging studies show that dysregulated expression of miR-124 is a hallmark in several cancer types and it has been attributed to the progression of these malignancies. In this review, we present a comprehensive summary of the role of miR-124 as a promising therapeutic gateway in oncology.
Factors affecting willingness to pay for construction management services in south Tu Liem - Hanoi

In big cities such as Hanoi, Ho Chi Minh City - the land is tight, the people are crowded, the choice of apartments is chosen by young households a lot because of the reasonable cost, many utilities. However, there are conflict in the apartment complex between residents and the building management service provider. These disputes are often related to service quality not good, not commensurate with the price that residents pay, even the price always increases over time… Therefore, the author uses a qualitative method to conclude the results. In accordance with the actual investigation to find the factors affecting the willingness to pay for apartment building management and operation services in Nam Tu Liem district - Hanoi city.
Self-Tuning Backstepping Control with Kalman-like Filter for High-Precision Control of Automotive Electronic Throttle

The automotive electronic throttle (AET) control system has been widely applied in modern automotive engines, and accurate control of AET can improve engine performance as well as reduce pollution emissions. However, the noise in the sensor circuit and the variation in automotive driving conditions seriously affect the control performance of the AET system, making controller designing challenging. This paper proposes a self-tuning backstepping control with a Kalman-like filter (SBCKLF) strategy. First, the noise affecting the position sensor measurement is verified to be non-Gaussian by acquiring and processing the noise signal. To eliminate its influence on control precision, a Kalman-like filter is introduced to estimate the real position of the valve. Then, a self-tuning backstepping controller is designed to automatically adapt to the variation in vehicle driving conditions. A self-tuning algorithm based on fuzzy control is used to tune the parameters of the backstepping controller online, so as to optimize the controller performance. Finally, an experimental platform based on dSPACE for the AET control system is built to perform the controller comprehensive test in a real-time environment. Experimental results and performance analysis demonstrate the effectiveness of the proposed SBCKLF strategy. Compared to the best results of other methods, the proposed method reduces the maximum and root mean square tracking errors by 21.65% and the average error by 12.89%. The steady-state and tracking error bounds are controlled to 0.9° and 2.3°, respectively. It also shows that the SBCKLF strategy has the strongest robustness as well as the best response speed.
Rack-Aware MSR Codes With Error Correction Capability for Multiple Erasure Tolerance

The minimum storage rack-aware regenerating (MSRR) code is a variation of regenerating codes that achieves the optimal repair bandwidth for a single node failure in the rack-aware model. Some explicit constructions of MSRR codes for all parameters to repair a single failed node have been reported. This paper studies MSRR codes with error-correcting capability for multiple erasure tolerance. First, we propose a general repair model of maximum distance separable (MDS) codes with error-correcting capability for multiple erasure tolerance and derive lower bounds on the number of symbols downloaded and accessed, respectively from helper racks for the purpose of correction and repair. Then, we construct a class of MDS array codes and scalar Reed-Solomon (RS) codes with the optimal repair bandwidth and error resilient capability for multiple node failures. Further, our codes are shown to have the low-access property. In particular, they have the optimal access property for repairing <inline-formula> <tex-math notation="LaTeX">$u$ </tex-math></inline-formula> failed nodes when the dimension of the code is divisible by the rack size <inline-formula> <tex-math notation="LaTeX">$u$ </tex-math></inline-formula>.
Semantics and proof calculus for communicating unstructured code

Software becomes ever more ubiquitous and complex. Its use in safety-critical environments, where errors may harm people or cost great amounts of money, requires a high level of confidence in its correctness. In order to ensure such levels of confidence, the use of formal verification methods to prove properties of the systems is an important tool. Such formal methods are widely applied to verify hardware and software, the latter usually written or modelled in high-level languages which are much easier to reason about. Such languages are, however, very different from the machine code which is actually executed. Therefore, the formalization of unstructured code may be necessary for some applications, such as the verification of compilers. Formal verification of sequential, structured programs has been extensively explored, but the techniques for concurrent or unstructured code are still an open problem. Furthermore, most approaches contemplate either concurrency and communication or unstructured code, not supporting the combination of the two. In this thesis, operational semantics in smalland big-step style and a proof calculus are defined for Low-Level Do (LLDo), a small and flexible unstructured language for communicating processes which should be general enough to model more complex languages. The big-step semantics and the proof calculus are defined in a compositional way, unifying techniques already used for dealing with communicating or unstructured code individually. The applicability of the calculus is tested on some simple examples.
Simulation of spiral instabilities in wide-gap spherical Couette flow

We numerically study the wide-gap spherical Couette flow between two concentric spheres with the inner sphere rotating and the outer one stationary. Two wide-gap clearance ratios, β = ( R 2 − R 1 ) / R 1 = 0.33 and 0.50, are chosen to investigate the transition scenarios of the spiral instabilities with increasing Reynolds number ( Re ). For β = 0.33 , we first obtain the steady 1-vortex flow at Re = 700 by using the 1-vortex flow for a medium gap β = 0.18 at Re = 700 as the initial condition. The 1-vortex flow for β = 0.33 exists for Re ∈ [ 450 , 2050 ] and it collapses back to the basic flow when Re > 2050 . We then detect spiral instabilities by increasing the Reynolds number gradually. The basic flow becomes unstable at Re c 1 = 2900 where spiral waves of wavenumber m = 6 appear first. Increasing the Reynolds number further, the wavenumber decreases to 5 and 4 at Re c 2 = 3000 and Re c 3 = 4000 respectively. The flow becomes turbulent when Re > 4500 . For β = 0.50 , no Taylor vortices are found. The basic flow becomes unstable at Re c 1 = 1280 where spiral waves of wavenumber m = 5 occur first. As the Reynolds number is increased, the wavenumber becomes 4 at Re c 2 = 1700 , 5 again at Re c 3 = 1800 , 4 at Re c 4 = 2000 , and becomes 3 at Re c 5 = 2200 while the flow becomes turbulent for Re > 2200 . The computed rotational frequencies as a function of the Reynolds number for spiral waves of wavenumber m = 5, 4 and 3 are in good agreement with previous experimental results. The present transition scenario of the spiral wavenumber with increasing Reynolds number for β = 0.33 is the same as that of Egbers and Rath (1995 Acta Mech. 111 125–40), while for β = 0.50 , it is only partially similar to those of Wulf et al (1999 Phys. Fluids 11 1359–72) and Egbers and Rath (1995 Acta Mech. 111 125–40).
CUSTOMER INTIMACY, CUSTOMERS EXPERIENCE, CUSTOMER SATISFACTION, CUSTOMER BONDING DAN CUSTOMER VALUE DALAM LOYALITAS NASABAH DI BANK SYARIAH

Pada perkembangan perekonomian di Indonesia yang semakin maju, khususnya pada sektor perbankan syariah. Dengan pertumbuhan perbankan syariah di Indonesia telah menciptakan banyak investor dan nasabah dengan berbagai penghimpunan dana. Tingginya minat masyarakat terhadap perbankan syariah untuk menabung dan melakukan pembiayaan membuat sektor perbankan semakin prospektif. Dalam hal ini membuat persaingan dalam sektor perbankan syariah semakin kompetitif, terutama bagi bank syariah dengan segmen pasar yang sama, bank syariah mengalami peningkatan yang cukup signifikan dari tahun ketahun. Dari peluang tersebut banyak bank syariah diIndonesia berlomba-lomba bersaing guna untuk memenuhi kebutuhan nasabah. Dalam hal ini Bank syariah mempunyai peran penting yaitu untuk selalu memenuhi kebutuhan nasabah dengan menyediakan produk atau layanan yang beretika sesuai dengan prinsip-prinsip syariah dan menyediakan aksesibilitas ternyaman melalui berbagai sarana kapanpun dan dimanapun. Penelitian ini merupakan penelitian yang bertujuan untuk mengetahui pengaruh Customer Intimacy, Customer experience, Customer satisfaction, Customer Bonding dalam bank syariah. Kata kunci : Customer Intimacy, Customer experience, Customer satisfaction, Customer Bonding,Costumer Value, Bank syariah
Millimeter-wave scanning-beam phased array antenna

A scanning-bearn array of microstrip patches, each dnven by a 180° varactor-diode reflective-type analog phase shifter is proposed and implemented at 30.0 GHz. A novel quadrature hybnd including three cascaded microstrip N4 coupled line sections is introduced as part of the phase shifter circuit The hybrid represented the key for an overail inexpensive design since its high complexity but loose fabrication tolerances permitted a simple printed circuit board construction for the entire phased array. The design for both the hybnd and the patch antennas relied on analysis performed with a moment method program. Measurements with a network analyzer and a coaxial probe determined the phase shift as a function of the control DC bias, for one phase shifter element at a time, in the fully constnrcted m y . The information thus collected was used to bias the phase shifters individually. This original technique solved the problem of component-induced non-uniforrnities in an analog driven phased array. Sidelobe generation due to phase error was reduced as a result Beam sreering was demonstrated for an array antenna of four microstrip patches and the measured antenna patterns at various scan angles followed the calculations. The antenna 3 dB beamwidth was 15' and the left-nght scan angle was 35"I want to express my deep gratitude to Professor K. G. Balmain for his kind supervision and his patience which made my work possible and very enjoyabie at the same tirne. 1 want aiso to express my thanks to Peîer C. Kremer and Gerald Dubois for their help in the Iab. The numerous suggestions of Leesa M. MacLeod and Karam Noujeim a . very much appreciated and acknowledged. Finally I want to thank Professor Balmain and Northern Telecom for providuig the necessary financial support for this work
Turbulence in the Outer Heliosheath

We present in situ observations of magnetic turbulence in the draped interstellar magnetic field measured by Voyager 1 during an undisturbed interval from 2015.3987 to 2016.6759 confirming the existence of the turbulence observed previously from 2013.3593 to 2014.6373. The power spectral density of the turbulence was the same in both cases. The turbulence had a Kolmogorov k−5/3 spectrum in the range from k = 1.3 × 10−13 cm−1 to 4 × 10−12 cm−1. The ratio of the turbulent fluctuations to the average magnetic field strength was only 0.02, indicating that the turbulence was very weak. Extrapolating the power-law slope to lower frequencies yields an upper limit on the turbulence outer scale of 0.01 pc = 2000 au, which may be regarded as the distance at which Voyager 1 will enter the undisturbed local interstellar medium, beyond the outer heliosheath or bow wave in the upstream direction. The maximum variance of the fluctuations was in the two directions transverse to the average magnetic field in the recent interval, whereas it was parallel to the average magnetic field in the earlier interval, suggesting a transformation from turbulence with a dominant compressive component to turbulence dominated by transverse fluctuations. As the magnitude of the fluctuations was approaching that of the uncertainties of the measurements, the latter result requires confirmation by further observations.
Penyuluhan Hukum Pidana Penyalahgunaan Media Sosial di Desa Dalihan Natolu Kecamatan Silaen Kabupaten Toba Sumatera Utara

Penyalahgunaan media sosial selama masa pandemi covid-19 rentang waktu 2020-2021 sangat marak di berbagai media sosial, karena banyak masyarakat dari berbagai usia yang menggunakan media sosial sebagai sarana di dalam pertukaran informasi, tanpa menyadari tindakan mengklik tersbut dilarang oleh peraturan perundang-undangan. Pengabdian kepada masyarakat (PKM) di Desa Dalihan Natolu, Kecamatan Silaen, Kabupaten Toba, Sumatera Utara dilakukan sebagai bentuk pengabdian kepada masyarakat (PKM) Fakultas Hukum Universitas Kristen Indonesia dalam rangka program pemberdayaan masyarakat serta meningkatkan solidaritas dan kepedulian kepada kondisi masyarakat, khususnya yang membutuhkan bantuan hukum, khususnya di masyarakat Desa yang berada jauh dari kota besar. FH UKI melakukan penyuluhan hukum tentang sanksi pidana bagi penyalahgunaan media sosial. PKM dilaksanakan dengan cara ceramah, diskusi, tanya jawab serta dilakukan evaluasi melalui penyebaran kuesioner kepada peserta. Pengabdian dilaksanakan oleh tim dosen FH UKI yang berkompeten di bidang hukum pidana dan telematika. Hasil dari PKM penyuluhan hukum penyalahgunaan media sosial memberikan hasil sebagai meningkatnya pengetahuan dan pemahaman warga di Desa Dalihan Natolu, Kecamatan Silaen, Kabupaten Toba, Sumatera Utara yang dialami mereka. Kata Kunci: penyalahgunaan medias sosial, media sosial, ancaman pidana media sosial
Whistler wave mitigation of energetic electrons in the magnetosphere

An approach to reduce the population of energetic (MeV) electrons trapped in the magnetosphere is presented. Under a double resonance condition, a whistler wave is simultaneously in cyclotron resonance with the keV electrons as well as with the MeV electrons. The injected whistler waves are first amplified by the background keV electrons via a loss-cone negative mass instability. The numerical results show that whistler wave can be amplified by more than 25 dB. When the wave amplitude exceeds 0.08 % of the background magnetic field, it becomes effective to precipitate MeV electrons via chaotic scattering, demonstrated by the numerical results.
Two simple modifications to improve the magnetic field profile in radial magnetic systems

All present watt balances employ permanent magnet systems using a yoke with high permeability as flux return. Very often these systems are built with vertical and azimuthal symmetries. In its simplest form, the air gap is defined as the radial distance between an inner and outer yoke with the same height. This design leads to sloped field lines away from the plane of vertical symmetry. In order to suppress this vertical magnetic field, we propose two modified magnet constructions: (1) adding a permanent magnet in the outer yoke, and (2) decreasing the height of the outer yoke. Finite element method simulations show that, with reasonable optimization, either proposal can lower the vertical magnetic field by about one order of magnitude.
Compact support of $L^1$ penalized variational problems

We investigate the solutions to L 1 constrained variational problems. In particular, we are interested in the case where the L 1 term is weighted by some non-negative function. Extending previous results of Brezis et al., we prove that for a wide range of variational problems, the solutions have compact support. Additionally, we provide the results of some numerical experiments, where we computed the solutions to L 1 constrained elliptic problems using splitting and ADMM.
Schémas numériques d'ordre élevé en temps et en espace pour l'équation des ondes

Mes travaux de these portent sur le developpement de schemas numeriques d'ordre eleve en temps et en espace pour la simulation de la propagation des ondes. Nous avons propose de discretiser dans un premier temps l'equation des ondes par rapport au temps, en utilisant une technique de type equation modifiee. Puis nous avons utilise une methode d'elements finis de type Galerkine discontinue pour la discretisation en espace. En modifiant l'ordre de la discretisation, nous avons construit des schemas tout aussi precis que ceux deja existants pour un cout de mise en oeuvre tres interessant. Apres avoir valide numeriquement la nouvelle methode, nous nous sommes interesses a sa stabilite ainsi qu'a son adaptivite en temps et en espace. Pour arriver a cela, nous avons du faire une etude precise de la stabilite de la methode de Galerkine discontinue et nous avons propose des ameliorations a cette technique entrainant des gains de temps significatifs.