Miracle-dz/UniFAR-FTUs huggingface dataset:
Shielding the Unseen: Privacy Protection through Poisoning NeRF with Spatial Deformation

In this paper, we introduce an innovative method of safeguarding user privacy against the generative capabilities of Neural Radiance Fields (NeRF) models. Our novel poisoning attack method induces changes to observed views that are imperceptible to the human eye, yet potent enough to disrupt NeRF's ability to accurately reconstruct a 3D scene. To achieve this, we devise a bi-level optimization algorithm incorporating a Projected Gradient Descent (PGD)-based spatial deformation. We extensively test our approach on two common NeRF benchmark datasets consisting of 29 real-world scenes with high-quality images. Our results compellingly demonstrate that our privacy-preserving method significantly impairs NeRF's performance across these benchmark datasets. Additionally, we show that our method is adaptable and versatile, functioning across various perturbation strengths and NeRF architectures. This work offers valuable insights into NeRF's vulnerabilities and emphasizes the need to account for such potential privacy risks when developing robust 3D scene reconstruction algorithms. Our study contributes to the larger conversation surrounding responsible AI and generative machine learning, aiming to protect user privacy and respect creative ownership in the digital age.
Reliability Evaluation Based on Mathematical Degradation Model for Vacuum Packaged MEMS Sensor

Vacuum packaging is used extensively in MEMS sensors for improving performance. However, the vacuum in the MEMS chamber gradually degenerates over time, which adversely affects the long-term performance of the MEMS sensor. A mathematical model for vacuum degradation is presented in this article for evaluating the degradation of vacuum packaged MEMS sensors, and a temperature-accelerated test of MEMS gyroscope with different vacuums is performed. A mathematical degradation model is developed to fit the parameters of the degradation of Q-factor over time at three different temperatures. The results indicate that the outgassing rate at 85 °C is the highest, which is 0.0531 cm2/s; the outgassing rate at 105 °C is the lowest, which is 0.0109 cm2/s; and the outgassing rate at 125 °C is in the middle, which is 0.0373 cm2/s. Due to the different mechanisms by which gas was released, the rate of degradation did not follow this rule. It will also be possible to predict the long-term reliability of vacuum packaged MEMS sensors at room temperature based on this model.
PROBING THE EXPANSION HISTORY OF THE UNIVERSE BY MODEL-INDEPENDENT RECONSTRUCTION FROM SUPERNOVAE AND GAMMA-RAY BURST MEASUREMENTS

To probe the late evolution history of the universe, we adopt two kinds of optimal basis systems. One of them is constructed by performing the principle component analysis, and the other is built by taking the multidimensional scaling approach. Cosmological observables such as the luminosity distance can be decomposed into these basis systems. These basis systems are optimized for different kinds of cosmological models that are based on different physical assumptions, even for a mixture model of them. Therefore, the so-called feature space that is projected from the basis systems is cosmological model independent, and it provides a parameterization for studying and reconstructing the Hubble expansion rate from the supernova luminosity distance and even gamma-ray burst (GRB) data with self-calibration. The circular problem when using GRBs as cosmological candles is naturally eliminated in this procedure. By using the Levenberg–Marquardt technique and the Markov Chain Monte Carlo method, we perform an observational constraint on this kind of parameterization. The data we used include the “joint light-curve analysis” data set that consists of 740 Type Ia supernovae and 109 long GRBs with the well-known Amati relation.
Sparse aperture masking at the VLT - II. Detection limits for the eight debris disks stars β Pic, AU Mic, 49 Cet, η Tel, Fomalhaut, g Lup, HD 181327 and HR 8799

Context. The formation of planetary systems is a common, yet complex mechanism. Numerous stars have been identified to possess a debris disk, a proto-planetary disk or a planetary system. The understanding of such formation process requires the study of debris disks. These targets are substantial and particularly suitable for optical and infrared observations. Sparse Aperture masking (SAM) is a high angular resolution technique strongly contributing to probe the region from 30 to 200 mas around the stars. This area is usually unreachable with classical imaging, and the technique also remains highly competitive compared to vortex coronagraphy. Aims. We aim to study debris disks with aperture masking to probe the close environment of the stars. Our goal is either to find low mass companions, or to set detection limits. Methods. We observed eight stars presenting debris disks ( $\beta$ Pictoris, AU Microscopii, 49 Ceti, $\eta$ Telescopii, Fomalhaut, g Lupi, HD181327 and HR8799) with SAM technique on the NaCo instrument at the VLT. Results. No close companions were detected using closure phase information under 0.5 of separation from the parent stars. We obtained magnitude detection limits that we converted to Jupiter masses detection limits using theoretical isochrones from evolutionary models. Conclusions. We derived upper mass limits on the presence of companions in the area of few times the diffraction limit of the telescope around each target star.
Jet and disc luminosities in tidal disruption events

Tidal disruption events (TDE) in which a star is devoured by a massive black hole at a galac- tic center pose a challenge to our understanding of accretion processes. Within a month the accretion rate reaches super-Eddington levels. It then drops gradually over a time scale of a year to sub-Eddington regimes. The initially geometrically thick disk becomes a thin one and eventually an ADAF at very low accretion rates. As such, TDEs explore the whole range of accretion rates and configurations. A challenging question is what the corresponding light curves of these events are. We explore numerically the disk luminosity and the conditions within the inner region of the disk using a fully general relativistic slim disk model. Those conditions determine the magnitude of the magnetic field that engulfs the black hole and this, in turn, determines the Blandford-Znajek jet power. We estimate this power in two different ways and show that they are self-consistent. We find, as expected earlier from analytic argu- ments (Krolik & Piran 2012), that neither the disk luminosity nor the jet power follows the accretion rate throughout the disruption event. The disk luminosity varies only logarithmi- cally with the accretion rate at super-Eddington luminosities. The jet power follows initially the accretion rate but remains a constant after the transition from super- to sub- Eddington. At lower accretion rates at the end of the MAD phase the disk becomes thin and the jet may stop altogether. These new estimates of the jet power and disk luminosity that do not simply follow the mass fallback rate should be taken into account when searching for TDEs and analysing light curves of TDE candidates. Identification of some of the above mentioned transitions may enable us to estimate better TDE parameters.
Study of resonant inelastic light scattering in Keldysh–Schwinger functional integral formalism

The scattering cross-section of the resonant inelastic light scattering is represented as a correlation function in the Keldysh–Schwinger functional integral formalism. The functional integral approach enables us to compute the cross-section in the Feynman diagram perturbation theory where many-body effects can be fully incorporated. This approach is applied to the one G-phonon Raman scattering of graphene, and the result is shown to agree with the one previously obtained by the conventional Fermi golden rule formula. Also, this approach is generalized to the systems in non-equilibrium conditions.
Institutional Performance of The Amil Zakat Institution in Palembang City: National Zakat Index (NZI) Approach

The previous studies in Indonesia showed the results of various zakat performances among Zakat Institutions (LAZ) using the National Zakat Index (NZI) method. This study aims to analyse the institutional performance of LAZ in Palembang City more precisely in managing Zakat, Infaq and Sodaqoh (ZIS) still by using the National Zakat Index (NZI) method but specifically for the analysis of institutional performance. Four methods of measuring the micro variables of IZN's institutional performance are collection, management, distribution, and reporting. The data were collected from the registered LAZs in Palembang City through the assessments of the institutional reports. Three LAZs are qualified with the criteria involved in this study: Yatim Mandiri, Dompet Dhuafa and Yakesma. This result provides an institutional performance indicator for LAZs in Palembang City, where Dompet Dhuafa achieved an excellent category while Yakesma and Yatim Mandiri reached a good category. All LAZs excel in the productive economy and social programs (education and humanity). At the same time, Dompet Dhuafa and Yakesma are excellent at collecting, managing and da'wah (preaching) programs. Meanwhile, Yatim Mandiri achieves its excellence in management and reporting aspects. It is concluded that BAZNAS Palembang increase the number of officially registered LAZs to increase professionalism and transparency in the distribution of ZIS and increase public trust.
Project Attribute Information and Initiator’s Commitment in Crowdfunding Message Strategy: An Empirical Investigation of Financing Performance in Agri-Food Crowdfunding

Agri-food crowdfunding, a new financing method, not only solves the financing constraints in agricultural development, but also realizes the effective connection between agricultural products and the market. Thus, exploring the impact of project factors on financing performance can help initiators design scientific and reasonable crowdfunding project plans. Based on the trust theory and the elaboration likelihood model (ELM), the trust mechanism is constructed with the characteristic attributes as the central path, the competitive attributes as the edge path, and the commitment as the mediator. Using the data of 1166 agri-food crowdfunding projects on the Taobao crowdfunding platform, I investigate the impact of disclosed project attribute information on financing performance and the mediating role of project risk. The results show that projects with a detailed explanation of the crowdfunding reason and the capital uses, a low funding goal, product qualification certificates issued by authoritative institutions, multiple types of rewards, a short reward delivery time, and a low investment threshold achieve good financing performance. The factor of commitment plays an intermediary role in the relationship between project attributes and financing performance. Based on the research conclusions, practical enlightenment is proposed for initiators, crowdfunding platforms, and regulators.
Recent Advances in MEMS-Based 3D Hemispherical Resonator Gyroscope (HRG)—A Sensor of Choice

Macro-scale, hemispherical-shaped resonating gyroscopes are used in high-precision motion and navigation applications. In these gyroscopes, a 3D wine-glass, hemispherical-shaped resonating structure is used as the main sensing element. Motivated by the success of macroscale hemispherical shape gyroscopes, many microscale hemispherical-shaped resonators have been produced due to the rapid advancement in semiconductor-based microfabrication technologies. The dynamic performance of hemispherical resonators depends on the degree of symmetry, uniformity of thickness, and surface smoothness, which, in turn, depend on the type of materials and fabrication methods. The main aim of this review paper is to summarize the materials, characterization and fabrication methods reported in the literature for the fabrication of microscale hemispherical resonator gyroscopes (µHRGs). The theory behind the development of HRGs is described and advancements in the fabrication of microscale HRGs through various semiconductor-based fabrication techniques are outlined. The integration of electrodes with the hemispherical structure for electrical transduction using other materials and fabrication methods is also presented. A comparison of different materials and methods of fabrication from the point of view of device characteristics and dynamic performance is discussed. This review can help researchers in their future research and engineers to select the materials and methods for µHRG development.
Dark Matter or Neutrino recoil? Interpretation of Recent Experimental Results

The elastic nuclear recoil signal, being under intense scrutiny by multiple underground experiments, can be interpreted either as coming from the interaction of nuclei with WIMP dark matter or from the scattering of new species of MeV-energy neutrinos. The most promising model for the latter case is a neutrino $\nu_b$ that interacts with baryon number, and with a flux sourced by the oscillations of regular solar $^8$B neutrinos. We re-analyze this model in light of the latest experimental results. In contrast to the light-DM interpretation of various tentative positive signals (anomalies) that is now seriously challenged by the negative results of the LUX experiment, the neutrino interpretation remains a viable explanation to most of the anomalies. Considering future prospects, we show that the superCDMS experiment alone, when equipped with Ge and Si detectors, will be able to detect $\nu_b$ and discriminate the model from a light DM interpretation. In addition, we also provide the forecast for the new CRESST-II run that now operates with new detectors and diminished backgrounds.
Excitation and state transfer through spin chains in the presence of spatially correlated noise

We investigate the influence of environmental noise on spin networks and spin chains. In addition to the common model of an independent bath for each spin in the system we also consider noise with a finite spatial correlation length. We present the emergence of decoherence-free subspaces and different dynamics with increasing correlation length for both dephasing and dissipating environments. This leads to relaxation blocking of one spin by uncoupled surrounding spins. We then consider perfect state transfer through a spin chain in the presence of decoherence and discuss the dependence of the transfer quality on spatial noise correlation length. We identify qualitatively different features for dephasing and dissipative environments in spin-transfer problems.
On two unsolved problems in probability

Dans ce travail nous abordons deux problemes non resolus en Probabilite appliquee. Nous les approchons tous deux sous un angle nouveau, en utilisant des outils aussi varies que les chaines de Markov, les mouvements Browniens, les transformations de Schwarz-Christoffel, les processus de Poisson et la theorie des temps d'arrets optimaux. Probleme de la ruine pour N joueursLe probleme de la ruine pour $N$ joueurs est un probleme celebre dont la solution pour $N=2$ est connue depuis longtemps. Nous l'abordons premierement en toute generalite, en le modelisant comme un probleme d'absorption pour une chaine de Markov. Nous obtenons les distributions associees a ce probleme et nous decrivons un algorithme (appele {it folding algorithm}) permettant de diminuer considerablement le nombre d'operations necessaires a une resolution complete. Cette etude nous permet de mettre en avant un certain nombres de relations de recurrence satisfaites par les probabilites de ruines associees a chaque etat de la chaine de Markov. Nous etudions ensuite une version asymptotique du probleme de la ruine pour 3 joueurs. Nous utilisons les proprietes d'invariance des mouvements Browniens par transformations conformes pour decrire une resolution de ce probleme via les transformations de Schwarz-Christoffel. Cette methode depasse le cadre strict du probleme de la ruine pour 3 joueurs et s'applique a d'autres problemes de temps d'atteinte d'un bord par un mouvement Brownien. Probleme de RobbinsCe probleme s'inscrit dans le cadre de la theorie des temps d'arrets optimaux. C'est un probleme d'analyse sequentielle dans lequel un observateur examine $n$ variables aleatoires independantes de maniere sequentielle et doit en selectionner exactement une sans rappel. L'objectif est de determiner une strategie qui permette de minimiser le rang moyen de l'observation selectionnee. Nous decrivons un modele alternatif de ce probleme, dans lequel le decideur observe un nombre aleatoire d'arrivees distribuees suivant un processus de Poisson homogene sur un horizon fixe $t$. Nous prouvons l'existence d'une strategie optimale pour chaque horizon, et nous montrons que la fonction de perte associee a cette strategie est uniformement continue sur $R$. Nous decrivons une fonction de perte restreinte qui permet d'obtenir une estimation de la valeur asymptotique du probleme, et nous obtenons la valeur asymptotique associee a des strategies specifiques. Nous obtenons ensuite une equation integro-diffferentielle sur la fonction de perte associee a la strategie optimale. Finalement nous etudions les valeurs asymptotiques du probleme et nous les comparons a celles du probleme en temps discret. Nous concluons cette these en decrivant des strategies specifiques qui permettent d'obtenir des estimations sur le comportement asymptotique de la fonction de perte.
Antiprotons from Dark Matter: Current constraints and future sensitivities

We systematically analyze the impact of current and foreseen cosmic ray antiproton measurements on the properties of Dark Matter (DM). We find that: 1) The current data from PAMELA impose constraints on annihilating and decaying DM which are similar to (or even slightly stronger than) the most stringent bounds coming from FERMI gamma rays, for hadronic channels and with fiducial choices for the astrophysical parameters. 2) The upcoming data from AMS-02 have the power to improve these constraints by slightly less than one order of magnitude and even to probe the thermal relic DM in the range 30-200 GeV, for hadronic channels. However, with wider choices for the astrophysical parameters the uncertainty on the constraints spans between one and two orders of magnitude. We then explore the capabilities of early AMS-02 data to reconstruct the underlying DM properties in the case of a positive detection of a significant excess (attributed to DM annilations) over the background. For hadronic channels, we find that AMS-02 should be able to somewhat determine the DM mass and the cross-section, but not the specific annihilation channel nor the branching ratios. If other more exotic annihilation channels are allowed, the reconstruction will be more challenging.
Predicting human cardiac QT alterations and pro-arrhythmic effects of compounds with a 3D beating heart-on-chip platform

Abstract Determining the potential cardiotoxicity and pro-arrhythmic effects of drug candidates remains one of the most relevant issues in the drug development pipeline (DDP). New methods enabling to perform more representative preclinical in vitro studies by exploiting induced pluripotent stem cell-derived cardiomyocytes (iPSC-CM) are under investigation to increase the translational power of the outcomes. Here we present a pharmacological campaign conducted to evaluate the drug-induced QT alterations and arrhythmic events on uHeart, a 3D miniaturized in vitro model of human myocardium encompassing iPSC-CM and dermal fibroblasts embedded in fibrin. uHeart was mechanically trained resulting in synchronously beating cardiac microtissues in 1 week, characterized by a clear field potential (FP) signal that was recorded by means of an integrated electrical system. A drug screening protocol compliant with the new International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use (ICH) guidelines was established and uHeart was employed for testing the effect of 11 compounds acting on single or multiple cardiac ion channels and well-known to elicit QT prolongation or arrhythmic events in clinics. The alterations of uHeart’s electrophysiological parameters such as the beating period, the FP duration, the FP amplitude, and the detection of arrhythmic events prior and after drug administration at incremental doses were effectively analyzed through a custom-developed algorithm. Results demonstrated the ability of uHeart to successfully anticipate clinical outcome and to predict the QT prolongation with a sensitivity of 83.3%, a specificity of 100% and an accuracy of 91.6%. Cardiotoxic concentrations of drugs were notably detected in the range of the clinical highest blood drug concentration (Cmax), qualifying uHeart as a fit-to-purpose preclinical tool for cardiotoxicity studies.
RAI14 Promotes Melanoma Progression by Regulating the FBXO32/c-MYC Pathway

Melanoma originates from the malignant transformation of melanocytes. Compared with other skin cancers, melanoma has a higher fatality rate. The 5-year survival rate of patients with early-stage primary melanoma through surgical resection can reach more than 90%. However, the 5-year survival rate of patients with metastatic melanoma is only 25%. Therefore, accurate assessment of melanoma progression is critical. Previous studies have found that Retinoic Acid Induced 14(RAI14) is critical in tumorigenesis. However, the biological function of RAI14 for the development of melanoma is unclear. In this study, RAI14 is highly expressed in melanoma and correlated with prognosis. The expression of RAI14 can affect the proliferation, migration and invasion of melanoma cells. F-Box Protein 32(FBXO32) is an E3 ubiquitin ligase of c-MYC. We found that RAI14 affects the transcriptional expression of FBXO32 and regulates the stability of c-MYC. These results suggest that RAI14 play an important role in the growth of melanoma and is expected to be a therapeutic target for melanoma.
On the connection between the radial momentum operator and the Hamiltonian in n dimensions

The radial momentum operator in quantum mechanics is usually obtained through canonical quantization of the (symmetrical form of the) classical radial momentum. We show that the well known connection between the Hamiltonian of a free particle and the radial momentum operator is true only in one or three dimensions. In general, an extra term of the form 2(n-1)(n-3)/2m4r2 has to be added to the Hamiltonian.