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We present a unified picture of outflowing gas from the X-ray binary system Hercules X-1/HZ Herculis. We suggest that the outflowing gas (a wind) causes UV emission seen in mid-eclipse, narrow UV absorption lines, and broad UV P Cygni lines. Observations with the FOS and STIS spectrographs on the Hubble Space Telescope... | X線連星系ヘルクレスX-1／HZヘルクリスからの流出ガスについて統一的な描像を提示する。我々は、この流出ガス（風）が、皆食の中間段階に観測される紫外線（UV）輝線、狭いUV吸収線、および広いUV P・セイギニー線を引き起こしていると提唱する。ハッブル宇宙望遠鏡（HST）に搭載されたFOSおよびSTIS分光器による観測では、X線皆食の真っ只中にUV輝線が検出された。この時期には、通常星のX線加熱大気および降着円盤が完全に視界から隠れているはずである。1998年の観測では位相φ=0.0–0.3の間に、500 km/sの青方偏移を示す狭い吸収線（半値幅～50 km/s）が、1999年の観測では400 km/sの青方偏移がそれぞれ観測された... | ja |
We investigate the propagation of locally plane, small-amplitude, monochromatic gravitational waves through cold compressible interstellar gas in order to provide a more accurate picture of expected waveforms for direct detection. The quasi-isothermal gas is concentrated in a spherical symmetric cloud held together by ... | 局所的に平面波であり、振幅が小さく、単色の重力波が冷たい圧縮性の星間ガス中を伝播する様子を調査し、直接検出における期待される波形のより正確な描像を得る。準等温のガスは、自己重力によって束縛された球対称の雲に集中している。重力波は、背景となる内部シュワルツシルト時空上の線形摂動として扱うことができる。摂動量は、ガスの力学を支配する場の方程式を導き、重力波と物質との相互作用を記述する。得られた場の方程式は、ゆっくりと変化する短波長の波に対して漸近的に分離され、異なるオーダーの大きさを持つ3つの偏微分方程式の系となる。2次精度のWKB法を用いることで、波の振幅に対する輸送方程式が得られる。背景の曲率の影響はすでに1次振幅に現れ、回折を引き... | ja |
We present a theoretical study of the spin transport properties of mono-atomic magnetic chains with a focus on the spectroscopical features of the I-V curve associated to spin-flip processes. Our calculations are based on the s-d model for magnetism with the electron transport treated at the level of the non-equilibriu... | Spin devrilme süreçlerine ilişkin I-V eğrisinin spektroskopik özelliklerine odaklanarak, tek atomlu manyetik zincirlerin spin taşıma özelliklerinin teorik bir incelemesini sunuyoruz. Hesaplamalarımız, elektron taşımasının dengesiz Green fonksiyonu formalizminin düzeyinde ele alındığı s-d modeline dayanmaktadır. Esnek o... | tr |
The deep reinforcement learning method usually requires a large number of training images and executing actions to obtain sufficient results. When it is extended a real-task in the real environment with an actual robot, the method will be required more training images due to complexities or noises of the input images, ... | تتطلب طريقة التعلم المعزز العميق عادةً عددًا كبيرًا من صور التدريب وتنفيذ العديد من الإجراءات للحصول على نتائج كافية. وعند توسيعها لتطبيقها على مهمة حقيقية في بيئة فعلية باستخدام روبوت فعلي، تصبح الحاجة إلى عدد أكبر من صور التدريب أمراً ضرورياً نظراً لتعقيدات أو الضوضاء الموجودة في صور المدخلات، كما يصبح تنفيذ عدد كبير... | ar |
The oversampling multiscale finite element method (MsFEM) is one of the most popular methods for simulating composite materials and flows in porous media which may have many scales. But the method may be inapplicable or inefficient in some portions of the computational domain, e.g., near the domain boundary or near lon... | La méthode d'éléments finis multi-échelles avec suréchantillonnage (MsFEM) est l'une des méthodes les plus populaires pour simuler les matériaux composites et les écoulements en milieux poreux pouvant comporter de nombreuses échelles. Toutefois, cette méthode peut être inapplicable ou inefficace dans certaines parties ... | fr |
Among the combinations $L_e-L_\mu$, $L_e-L_\tau$ and $L_\mu-L_\tau$ any one can be gauged in anomaly free way with the standard model gauge group. The masses of these gauge bosons can be so light that it can induce long-range forces on the Earth due to the electrons in the Sun. This type of forces can be constrained si... | Parmi les combinaisons $L_e-L_\mu$, $L_e-L_\tau$ et $L_\mu-L_\tau$, l'une quelconque peut être associée à un groupe de jauge sans anomalies avec le groupe de jauge du modèle standard. Les masses de ces bosons de jauge peuvent être suffisamment faibles pour induire des forces à longue portée sur Terre dues aux électrons... | fr |
Multisensory object-centric perception, reasoning, and interaction have been a key research topic in recent years. However, the progress in these directions is limited by the small set of objects available -- synthetic objects are not realistic enough and are mostly centered around geometry, while real object datasets ... | Pemersepsi, penaakulan, dan interaksi berpusat objek pelbagai deria telah menjadi topik penyelidikan utama dalam beberapa tahun kebelakangan ini. Namun begitu, kemajuan dalam arah ini terbatas oleh set objek yang kecil tersedia—objek sintetik tidak cukup realistik dan kebanyakannya berfokus pada geometri semata-mata, m... | ms |
We study theoretically the low-energy hole states in Si, Ge, and Ge/Si core/shell nanowires (NWs). The NW core in our model has a rectangular cross section, the results for a square cross section are presented in detail. In the case of Ge and Ge/Si core/shell NWs, we obtain very good agreement with previous theoretical... | Estudamos teoricamente os estados de buraco de baixa energia em nanofios (NWs) de Si, Ge e Ge/Si núcleo/casca. O núcleo do NW em nosso modelo possui uma seção transversal retangular, sendo apresentados em detalhe os resultados para uma seção transversal quadrada. No caso dos NWs de Ge e Ge/Si núcleo/casca, obtemos uma ... | pt |
We study effects of pinning on the dynamics of a vortex lattice in a type II superconductor in the strong-pinning situation and determine the force--velocity (or current--voltage) characteristic combining analytical and numerical methods. Our analysis deals with a small density $n_p$ of defects that act with a large fo... | 강한 못 박기 상황에서 제2종 초전도체 내의 와동 격자의 동역학에 대한 못 박기의 영향을 연구하고, 해석적 방법과 수치적 방법을 결합하여 힘-속도(또는 전류-전압) 특성을 결정한다. 우리의 분석은 와동에 대해 큰 힘 $f_p$를 작용시키는 결함의 낮은 밀도 $n_p$를 다루며, 이는 강한 못 박기 이론의 특징적인 특징인 이중안정 상태를 유도한다. 우리는 속도에 따라 변하는 평균 못 박기 힘 밀도 $\langle F_p(v)\rangle$를 결정하였으며, 이 값이 속도 척도 $v_p \sim f_p/\eta a_0^3$에서 변화함을 발견하였다. 여기서 $\eta$는 와... | ko |
A general framework for the study of regular variation (RV) is that of Polish star-shaped metric spaces, while recent developments in [1] have discussed RV with respect to some properly localised boundedness $\mathcal{B}$ imposing weak assumptions on the structure of Polish space. Along the lines of the latter approa... | Obecný rámec pro studium pravidelné variability (RV) tvoří polské hvězdicové metrické prostory, zatímco nedávné vývoje v [1] diskutovaly RV vzhledem k nějaké vhodně lokalizované omezenosti $\mathcal{B}$, přičemž kladou slabé požadavky na strukturu polského prostoru. V duchu tohoto posledně zmíněného přístupu rozebíráme... | cs |
A recent ALMA observation of the Elias 2-27 system revealed a two-armed structure extending out to ~300 au in radius. The protostellar disc surrounding the central star is unusually massive, raising the possibility that the system is gravitationally unstable. Recent work has shown that the observed morphology of the sy... | エリヤス2-27系の最近のALMA観測により、半径約300auまで及ぶ二重腕構造が明らかになった。中心星を取り巻く原始星円盤は異常に質量が大きく、この系が重力的に不安定である可能性を示唆している。最近の研究では、この系で観測された形態が円盤の自己重力によって説明できることが示されているため、自己重力による渦巻き波動を検出するために必要な円盤の物理的性質を検討した。三次元スムーズド粒子ハイドロダイナミクス法を用い、放射伝達および合成ALMA画像を組み合わせて解析した結果、観測される渦巻き構造が自己重力によって説明されるのは、円盤の不透明度が低く（したがって冷却効率が高く）、外部からの放射照の影響が最小限に抑えられている場合に限られるこ... | ja |
Semi-competing risks refer to the setting where primary scientific interest lies in estimation and inference with respect to a non-terminal event, the occurrence of which is subject to a terminal event. In this paper, we present the R package SemiCompRisks that provides functions to perform the analysis of independent/... | Semi-kompetierende Risiken beziehen sich auf einen Kontext, bei dem das primäre wissenschaftliche Interesse auf der Schätzung und Inferenz bezüglich eines nicht-terminalen Ereignisses liegt, dessen Eintreten von einem terminalen Ereignis abhängig ist. In dieser Arbeit stellen wir das R-Paket SemiCompRisks vor, das Funk... | de |
The mixing of the quasifission component to the fissionlike cross section causes ambiguity in the quantitative estimation of the complete fusion cross section from the observed angular and mass distributions of the binary products. We show that the partial cross section of quasifission component of binary fragments cov... | La mezcla del componente de cuasifisión a la sección eficaz de tipo fisión provoca ambigüedad en la estimación cuantitativa de la sección eficaz de fusión completa a partir de las distribuciones angulares y de masas observadas de los productos binarios. Mostramos que la sección eficaz parcial del componente de cuasifis... | es |
For several decades, the interest of the scientific community in aneutronic fusion reactions such as proton-Boron fusion has grown because of potential applications in different fields. Recently, many scientific teams in the world have worked experimentally on the possibility to trigger proton-Boron fusion using intens... | Depuis plusieurs décennies, l'intérêt de la communauté scientifique pour les réactions de fusion aneutronique, telles que la fusion proton-bore, n'a cessé de croître en raison de leurs applications potentielles dans divers domaines. Récemment, de nombreuses équipes scientifiques à travers le monde ont travaillé expérim... | fr |
Robots which interact with the physical world will benefit from a fine-grained tactile understanding of objects and surfaces. Additionally, for certain tasks, robots may need to know the haptic properties of an object before touching it. To enable better tactile understanding for robots, we propose a method of classify... | الروبوتات التي تتفاعل مع العالم المادي ستستفيد من فهم دقيق وتفصيلي للخصائص اللمسية للأشياء والأسطح. بالإضافة إلى ذلك، قد تحتاج الروبوتات في بعض المهام إلى معرفة الخصائص الحسية اللمسية لجسم ما قبل لمسه. لتمكين الروبوتات من فهم أفضل للخصائص اللمسية، نقترح طريقة لتصنيف الأسطح باستخدام صفات لمسية (مثل "قابل للانضغاط" أو "أ... | ar |
Data on the photoproduction of $\omega$ mesons on nuclei have been re-analyzed in a search for in-medium modifications. The data were taken with the Crystal Barrel(CB)/TAPS detector system at the ELSA accelerator facility in Bonn. First results from the analysis of the data set were published by D. Trnka et al. in Phys... | Dữ liệu về quá trình tạo thành các meson $\omega$ dưới tác dụng của photon trên các hạt nhân đã được phân tích lại nhằm tìm kiếm các hiệu chỉnh trong môi trường trung gian. Dữ liệu được thu thập bằng hệ thống detector Crystal Barrel (CB)/TAPS tại cơ sở gia tốc ELSA ở Bonn. Những kết quả đầu tiên từ việc phân tích bộ dữ... | vi |
The gaussian damping factor (g.d.f.) and the new interaction vertex with the symplectic tensor are the characteristic properties of the N-point scalar-vector scattering amplitudes of the p-p' (p < p') open string system which realizes noncommutative geometry. The g.d.f. is here interpreted as a form factor of the Dp-br... | Ang gaussian damping factor (g.d.f.) at ang bagong interaction vertex na may symplectic tensor ay ang mga katangian ng N-point scalar-vector scattering amplitudes ng p-p' (p < p') na bukas na sistema ng string na nagpapakita ng di-nagkakasunduang heometriya. Ang g.d.f. ay ipinapakahulugan dito bilang isang form factor ... | tl |
Among the combinations $L_e-L_\mu$, $L_e-L_\tau$ and $L_\mu-L_\tau$ any one can be gauged in anomaly free way with the standard model gauge group. The masses of these gauge bosons can be so light that it can induce long-range forces on the Earth due to the electrons in the Sun. This type of forces can be constrained si... | Trong số các tổ hợp $L_e-L_\mu$, $L_e-L_\tau$ và $L_\mu-L_\tau$, bất kỳ tổ hợp nào cũng có thể được lượng tử hóa theo cách không có dị thường cùng với nhóm chuẩn của mô hình chuẩn. Khối lượng của các boson gauge này có thể nhẹ đến mức gây ra các lực tầm xa trên Trái Đất do các electron trong Mặt Trời. Loại lực này có t... | vi |
En este trabajo, se obtiene una expresi\'on num\'erica para calcular el espectro de emisi\'on de un sistema microcavidad-punto cu\'antico usando una teor\'ia de campo medio en el formalismo de la matriz densidad. El sistema modelado es un micropilar semiconductor que contiene un \'unico punto cu\'antico en el interior ... | Dalam karya ini, kami memperoleh ekspresi numerik untuk menghitung spektrum emisi suatu sistem titik kuantum-mikrokavitas, menggunakan teori medan rata-rata dalam formalisme matriks densitas. Sistem terbuka yang dimodelkan adalah mikropilar semikonduktor khas yang mengandung satu titik kuantum tunggal di dalam mikrokav... | id |
A general framework for the study of regular variation (RV) is that of Polish star-shaped metric spaces, while recent developments in [1] have discussed RV with respect to some properly localised boundedness $\mathcal{B}$ imposing weak assumptions on the structure of Polish space. Along the lines of the latter approa... | Un cadre général pour l'étude de la variation régulière (VR) est celui des espaces métriques polonais étoilés, tandis que des développements récents dans [1] ont abordé la VR par rapport à une bornitude $\mathcal{B}$ convenablement localisée, en imposant des hypothèses faibles sur la structure de l'espace polonais. Dan... | fr |
We study effects of pinning on the dynamics of a vortex lattice in a type II superconductor in the strong-pinning situation and determine the force--velocity (or current--voltage) characteristic combining analytical and numerical methods. Our analysis deals with a small density $n_p$ of defects that act with a large fo... | Nous étudions les effets de l'ancrage sur la dynamique d'un réseau de vortex dans un supraconducteur de type II en situation d'ancrage fort, et déterminons la caractéristique force-vitesse (ou courant-tension) en combinant des méthodes analytiques et numériques. Notre analyse porte sur une faible densité $n_p$ de défau... | fr |
Charginos $\tilde{\chi}^\pm$ and neutralinos $\tilde{\chi}^0$ in supersymmetric theories can be produced copiously at $e^+e^-$ colliders and their properties can be measured with high accuracy. Consecutively to the chargino system, in which the SU(2) gaugino parameter $M_2$, the higgsino mass parameter $\mu$ and $\tan\... | Dalam teori supersimetri, chargino $\tilde{\chi}^\pm$ dan neutralino $\tilde{\chi}^0$ boleh dihasilkan dengan banyak di penggalak $e^+e^-$ dan sifat-sifat mereka boleh diukur dengan ketepatan tinggi. Secara berterusan daripada sistem chargino, di mana parameter gaugino SU(2) $M_2$, parameter jisim higgsino $\mu$ dan $\... | ms |
A new kind of quantum indeterminacy of transverse position is shown to arise from quantum degrees of freedom of spacetime, based on the assumption that classical trajectories can be defined no better than the diffraction limit of Planck scale waves. Indeterminacy of the angular orientation of particle trajectories due ... | Se demuestra que surge una nueva clase de indeterminación cuántica de la posición transversal a partir de los grados de libertad cuánticos del espacio-tiempo, basada en el supuesto de que las trayectorias clásicas no pueden definirse con mayor precisión que el límite de difracción de ondas a escala de Planck. La indete... | es |
Graphene nanoribbons (GNRs) synthesized using a bottom-up technique potentially enable future electronic devices owing to the tunable electronic structures depending on the well-defined width and edge geometry. For instance, armchair-edged GNRs (AGNRs) exhibit width-dependent bandgaps. However, the bandgaps of AGNRs sy... | 采用自下而上方法合成的石墨烯纳米带（GNRs）因其电子结构可调，且取决于明确定义的宽度和边缘几何结构，有望用于未来的电子器件。例如，扶手椅型边缘石墨烯纳米带（AGNRs）表现出与宽度相关的带隙。然而，迄今为止实验合成的AGNRs带隙相对较大，远超过1 eV。如此大的带隙可能因产生较大的肖特基势垒和载流子有效质量而恶化器件性能。本文报道了使用二溴苯类前驱体自下而上合成具有较小带隙的AGNRs。在Au(111)表面合成了两种不同宽度（分别为17个和13个碳原子）的AGNRs，并利用扫描探针显微镜和谱学技术对其原子结构和电子结构进行了研究。研究发现，17-AGNRs是迄今为止报道的自下而上合成的AGNRs中带隙最小、电子/空穴有效质量最小... | zh |
Data on the photoproduction of $\omega$ mesons on nuclei have been re-analyzed in a search for in-medium modifications. The data were taken with the Crystal Barrel(CB)/TAPS detector system at the ELSA accelerator facility in Bonn. First results from the analysis of the data set were published by D. Trnka et al. in Phys... | Data mengenai fotopenghasilan meson $\omega$ pada nuklei telah dianalisis semula dalam pencarian pengubahsuaian di dalam medium. Data tersebut diambil menggunakan sistem pengesan Crystal Barrel (CB)/TAPS di kemudahan akselerator ELSA di Bonn. Keputusan awal daripada analisis set data telah diterbitkan oleh D. Trnka et ... | ms |
En este trabajo, se obtiene una expresi\'on num\'erica para calcular el espectro de emisi\'on de un sistema microcavidad-punto cu\'antico usando una teor\'ia de campo medio en el formalismo de la matriz densidad. El sistema modelado es un micropilar semiconductor que contiene un \'unico punto cu\'antico en el interior ... | Dans ce travail, on obtient une expression numérique permettant de calculer le spectre d'émission d'un système microcavité-point quantique en utilisant une théorie de champ moyen dans le formalisme de la matrice densité. Le système ouvert modélisé est un micropilier semi-conducteur typique contenant un unique point qua... | fr |
For several decades, the interest of the scientific community in aneutronic fusion reactions such as proton-Boron fusion has grown because of potential applications in different fields. Recently, many scientific teams in the world have worked experimentally on the possibility to trigger proton-Boron fusion using intens... | Po několik desetiletí roste zájem vědecké komunity o aneutronické fúzní reakce, jako je fúze proton-boron, kvůli potenciálnímu využití v různých oblastech. V poslední době pracovalo mnoho vědeckých týmů na celém světě experimentálně na možnosti vyvolání fúze proton-boron pomocí intenzivních laserů, což svědčí o významn... | cs |
In 1978, Schaefer proved his famous dichotomy theorem for generalized satisfiability problems. He defined an infinite number of propositional satisfiability problems, showed that all these problems are either in P or NP-complete, and gave a simple criterion to determine which of the two cases holds. This result is surp... | 1978年，Schaefer证明了关于广义可满足性问题的著名二分定理。他定义了一类无限的命题可满足性问题，证明所有这些问题要么属于P类，要么是NP完全的，并给出了一个简单的判据来确定属于哪一种情况。考虑到Ladner定理的结论，这一结果令人惊讶，因为Ladner定理表明，在P与NP完全之间存在无限多个复杂性类（假设P不等于NP）。Schaefer还提出了关于量化广义布尔公式的二分定理，但该定理直到最近才由Creignou、Khanna和Sudan，以及独立地由Dalmau所证明：判断量化布尔公式的真值问题要么是PSPACE完全的，要么属于P类。本文研究了交替量词层数受限的量化广义布尔公式。在不受限制的情况下，这些问题分别是多项式层次... | zh |
High-contrast coronagraphy will be needed to image and characterize faint extra-solar planetary systems. Coronagraphy is a rapidly evolving field, and many enhanced alternatives to the classical Lyot coronagraph have been proposed in the past ten years. Here, we discuss the operation of the vector vortex coronagraph, w... | La coronografia ad alto contrasto sarà necessaria per immaginare e caratterizzare deboli sistemi planetari extrasolari. La coronografia è un campo in rapida evoluzione e negli ultimi dieci anni sono state proposte numerose alternative migliorative rispetto al classico coronografo di Lyot. In questo lavoro discutiamo il... | it |
The generalized belief propagation (GBP), introduced by Yedidia et al., is an extension of the belief propagation (BP) algorithm, which is widely used in different problems involved in calculating exact or approximate marginals of probability distributions. In many problems, it has been observed that the accuracy of GB... | La propagación de creencias generalizada (GBP), introducida por Yedidia et al., es una extensión del algoritmo de propagación de creencias (BP), que se utiliza ampliamente en diversos problemas relacionados con el cálculo de marginales exactos o aproximados de distribuciones de probabilidad. En muchos problemas se ha o... | es |
We study effects of pinning on the dynamics of a vortex lattice in a type II superconductor in the strong-pinning situation and determine the force--velocity (or current--voltage) characteristic combining analytical and numerical methods. Our analysis deals with a small density $n_p$ of defects that act with a large fo... | Estudamos os efeitos da fixação (pinning) na dinâmica de um reticulado de vórtices em um supercondutor do tipo II na situação de fixação forte e determinamos a característica força--velocidade (ou corrente--tensão) combinando métodos analíticos e numéricos. Nossa análise trata de uma baixa densidade $n_p$ de defeitos q... | pt |
High-contrast coronagraphy will be needed to image and characterize faint extra-solar planetary systems. Coronagraphy is a rapidly evolving field, and many enhanced alternatives to the classical Lyot coronagraph have been proposed in the past ten years. Here, we discuss the operation of the vector vortex coronagraph, w... | Koronagrafi berkontras tinggi diperlukan untuk mengimej dan mencirikan sistem planet luar suria yang malap. Koronagrafi merupakan bidang yang berkembang dengan pesat, dan banyak alternatif peningkatan terhadap koronagraf Lyot klasik telah dicadangkan dalam sepuluh tahun kebelakangan ini. Di sini, kami membincangkan ope... | ms |
En este trabajo, se obtiene una expresi\'on num\'erica para calcular el espectro de emisi\'on de un sistema microcavidad-punto cu\'antico usando una teor\'ia de campo medio en el formalismo de la matriz densidad. El sistema modelado es un micropilar semiconductor que contiene un \'unico punto cu\'antico en el interior ... | Бұл жұмыста тығыздық матрицасының формализмінде орташа өріс теориясын қолдана отырып, кванттық нүкте-микросаңылау жүйесі үшін шығарылым спектрін есептеуге мүмкіндік беретін сандық өрнек алынады. Моделденген ашық жүйе – микросаңылаудың ішінде жалғыз кванттық нүктені қамтитын типтік жартылай өткізгіш микротіреңкі болып т... | kk |
We use the Kubo-Landauer formalism to compute the longitudinal (two-terminal) conductance of a two dimensional electron system placed in a strong perpendicular magnetic field, and subjected to periodic modulations and/or disorder potentials. The scattering problem is recast as a set of inhomogeneous, coupled linear equ... | Nous utilisons le formalisme de Kubo-Landauer pour calculer la conductance longitudinale (à deux bornes) d'un système bidimensionnel d'électrons placé dans un champ magnétique perpendiculaire intense, et soumis à des potentiels de modulation périodique et/ou de désordre. Le problème de diffusion est reformulé sous la f... | fr |
The evolution of a walker in standard "Discrete-time Quantum Walk (DTQW)" is determined by coin and shift unitary operators. The conditional shift operator shifts the position of the walker to right or left by unit step size while the direction of motion is specified by the coin operator. This scenario can be generaliz... | A evolução de um andador em um "Passeio Quântico em Tempo Discreto (DTQW)" padrão é determinada por operadores unitários de moeda e de deslocamento. O operador de deslocamento condicional move a posição do andador para a direita ou para a esquerda em um passo unitário, enquanto a direção do movimento é especificada pel... | pt |
Crystals arise as the result of the breaking of a spatial translation symmetry. Similarly, translation symmetries can also be broken in time so that discrete time crystals appear. Here, we introduce a method to describe, characterize, and explore the physical phenomena related to this phase of matter using tools from g... | ผลึกเกิดขึ้นจากการที่ความสมมาตรของการเลื่อนตำแหน่งในเชิงพื้นที่ถูกละเมิด ในทำนองเดียวกัน ความสมมาตรของการเลื่อนตำแหน่งยังสามารถถูกละเมิดในมิติเวลาได้ ทำให้เกิดผลึกเวลาแบบไม่ต่อเนื่อง (discrete time crystals) ที่นี่ เราได้นำเสนอวิธีการอธิบาย จำแนก และศึกษาปรากฏการณ์ทางกายภาพที่เกี่ยวข้องกับสถานะของสสารชนิดนี้ โดยใช้เครื... | th |
Integrating sensing into standardized communication systems can potentially benefit many consumer applications that require both radio frequency functions. However, without an effective sensing method, such integration may not achieve the expected gains of cost and energy efficiency. Existing sensing methods, which use... | L'integrazione della rilevazione nei sistemi di comunicazione standardizzati può potenzialmente beneficiare numerose applicazioni consumer che richiedono funzionalità in radiofrequenza. Tuttavia, in assenza di un metodo efficace di rilevazione, tale integrazione potrebbe non raggiungere i guadagni attesi in termini di ... | it |
Crystals arise as the result of the breaking of a spatial translation symmetry. Similarly, translation symmetries can also be broken in time so that discrete time crystals appear. Here, we introduce a method to describe, characterize, and explore the physical phenomena related to this phase of matter using tools from g... | Кристаллы возникают в результате нарушения симметрии пространственных трансляций. Аналогичным образом симметрии трансляций могут нарушаться и во времени, в результате чего появляются дискретные временные кристаллы. В данной работе мы предлагаем метод описания, характеризации и исследования физических явлений, связанных... | ru |
A new kind of quantum indeterminacy of transverse position is shown to arise from quantum degrees of freedom of spacetime, based on the assumption that classical trajectories can be defined no better than the diffraction limit of Planck scale waves. Indeterminacy of the angular orientation of particle trajectories due ... | Một dạng mới của sự bất định lượng tử về vị trí ngang được chỉ ra là phát sinh từ các bậc tự do lượng tử của không-thời gian, dựa trên giả định rằng các quỹ đạo cổ điển không thể được xác định chính xác hơn giới hạn nhiễu xạ của các sóng cỡ Planck. Sự bất định về hướng góc của các quỹ đạo hạt do lưỡng tính sóng/hạt ở t... | vi |
We study the thermal transport properties of three CaF$_{2}$ polymorphs up to a pressure of 30 GPa using first-principle calculations and an interatomic potential based on machine learning. The lattice thermal conductivity $\kappa$ is computed by iteratively solving the linearized Boltzmann transport equation (BTE) and... | Estudiamos las propiedades de transporte térmico de tres polimorfos de CaF$_{2}$ hasta una presión de 30 GPa utilizando cálculos de primeros principios y un potencial interatómico basado en aprendizaje automático. La conductividad térmica reticular $\kappa$ se calcula resolviendo iterativamente la ecuación linealizada ... | es |
We propose Otiy, a node-centric location service that limits the impact of location updates generate by mobile nodes in IEEE802.11-based wireless mesh networks. Existing location services use node identifiers to determine the locator (aka anchor) that is responsible for keeping track of a node's location. Such a strate... | Wir schlagen Otiy vor, einen knotenzentrierten Ortungsdienst, der die Auswirkungen von Positionsaktualisierungen, die von mobilen Knoten in drahtlosen Mesh-Netzwerken auf Basis von IEEE802.11 erzeugt werden, begrenzt. Bestehende Ortungsdienste verwenden Knotenidentifikatoren, um den Locator (auch bekannt als Anker) zu ... | de |
We consider an unmanned aerial vehicle enabled (UAV-enabled) fog-radio access network (F-RAN) in which UAVs are considered as flying remote radio heads (RRH) equipped with caching and cooperative communications capabilities. We are mainly focus on probabilistic/randomized content placement strategy, and accordingly for... | Consideramos una red de acceso radio con niebla habilitada por vehículos aéreos no tripulados (UAV-enabled F-RAN), en la que los UAV se consideran cabezas de radio remotas voladoras (RRH) equipadas con capacidades de almacenamiento en caché y comunicaciones cooperativas. Principalmente nos centramos en una estrategia d... | es |
To realize efficient computational fluid dynamics (CFD) prediction of two-phase flow, a multi-scale framework was proposed in this paper by applying a physics-guided data-driven approach. Instrumental to this framework, Feature Similarity Measurement (FSM) technique was developed for error estimation in two-phase flow ... | Per realizzare una previsione efficiente della dinamica dei fluidi computazionale (CFD) per flussi bifase, in questo articolo è stato proposto un approccio basato su un framework multiscala che applica un metodo guidato dalla fisica e basato sui dati. Fondamentale per questo framework, è stata sviluppata la tecnica di ... | it |
Within the framework of classical field theory, the connection between the Dirac field as the field of matter and the spacetime metric is discussed. Polarization structure of the Dirac field is shown to be rich enough to determine the spacetime metric locally and to explain the emergence of observed matter as localized... | Dans le cadre de la théorie classique des champs, on examine la relation entre le champ de Dirac en tant que champ de matière et la métrique de l'espace-temps. On montre que la structure de polarisation du champ de Dirac est suffisamment riche pour déterminer localement la métrique de l'espace-temps et expliquer l'appa... | fr |
The deep reinforcement learning method usually requires a large number of training images and executing actions to obtain sufficient results. When it is extended a real-task in the real environment with an actual robot, the method will be required more training images due to complexities or noises of the input images, ... | Die Methode des tiefen Verstärkungslernens erfordert gewöhnlich eine große Anzahl von Trainingsbildern und ausgeführten Aktionen, um ausreichende Ergebnisse zu erzielen. Wenn sie auf eine reale Aufgabe in einer echten Umgebung mit einem physischen Roboter erweitert wird, sind aufgrund der Komplexität oder der Rauschant... | de |
Multistage stochastic programs can be approximated by restricting policies to follow decision rules. Directly applying this idea to problems with integer decisions is difficult because of the need for decision rules that lead to integral decisions. In this work, we introduce Lagrangian dual decision rules (LDDRs) for m... | Многоэтапные стохастические программы могут быть аппроксимированы путем ограничения политик следованию правилам принятия решений. Прямое применение этой идеи к задачам с целочисленными решениями затруднительно из-за необходимости в правилах принятия решений, приводящих к целочисленным решениям. В данной работе мы вводи... | ru |
In 1978, Schaefer proved his famous dichotomy theorem for generalized satisfiability problems. He defined an infinite number of propositional satisfiability problems, showed that all these problems are either in P or NP-complete, and gave a simple criterion to determine which of the two cases holds. This result is surp... | En 1978, Schaefer a démontré son célèbre théorème de dichotomie pour les problèmes de satisfiabilité généralisés. Il a défini un nombre infini de problèmes de satisfiabilité propositionnelle, montré que tous ces problèmes sont soit dans P, soit NP-complets, et donné un critère simple permettant de déterminer dans quel ... | fr |
Privacy has become a major concern in Online Social Networks (OSNs) due to threats such as advertising spam, online stalking and identity theft. Although many users hide or do not fill out their private attributes in OSNs, prior studies point out that the hidden attributes may be inferred from some other public informa... | Privasi telah menjadi satu kebimbangan utama dalam Rangkaian Sosial Dalam Talian (OSN) disebabkan oleh ancaman seperti spam pengiklanan, penguntitan dalam talian dan pencurian identiti. Walaupun ramai pengguna menyembunyikan atau tidak mengisi atribut peribadi mereka dalam OSN, kajian terdahulu menunjukkan bahawa atrib... | ms |
In the present paper, we propose Krylov-based methods for solving large-scale differential Sylvester matrix equations having a low rank constant term. We present two new approaches for solving such differential matrix equations. The first approach is based on the integral expression of the exact solution and a Krylov m... | In der vorliegenden Arbeit schlagen wir Krylov-basierte Verfahren zur Lösung von großskaligen differentiellen Sylvester-Matrixgleichungen mit einem konstanten Term von niedrigem Rang vor. Wir stellen zwei neue Ansätze zur Lösung solcher differentieller Matrixgleichungen vor. Der erste Ansatz basiert auf der Integraldar... | de |
The oversampling multiscale finite element method (MsFEM) is one of the most popular methods for simulating composite materials and flows in porous media which may have many scales. But the method may be inapplicable or inefficient in some portions of the computational domain, e.g., near the domain boundary or near lon... | Метод многомасштабных конечных элементов с апсемплированием (MsFEM) является одним из наиболее популярных методов моделирования композиционных материалов и течений в пористых средах, которые могут содержать множество масштабов. Однако данный метод может оказаться неприменимым или неэффективным в некоторых частях расчёт... | ru |
The Fredholm determinants of a special class of integral operators K supported on the union of m curve segments in the complex plane are shown to be the tau-functions of an isomonodromic family of meromorphic covariant derivative operators D_l. These have regular singular points at the 2m endpoints of the curve segment... | Se demuestra que los determinantes de Fredholm de una clase especial de operadores integrales K, soportados en la unión de m segmentos de curva en el plano complejo, son funciones tau de una familia isomonodrómica de operadores meromorfos de derivación covariante D_l. Estos poseen puntos singulares regulares en los 2m ... | es |
Robots which interact with the physical world will benefit from a fine-grained tactile understanding of objects and surfaces. Additionally, for certain tasks, robots may need to know the haptic properties of an object before touching it. To enable better tactile understanding for robots, we propose a method of classify... | Các robot tương tác với thế giới vật lý sẽ được hưởng lợi từ việc hiểu biết chi tiết về cảm giác xúc giác đối với các vật thể và bề mặt. Ngoài ra, đối với một số nhiệm vụ nhất định, robot có thể cần biết các thuộc tính xúc giác của một vật thể trước khi chạm vào nó. Để nâng cao khả năng hiểu biết xúc giác cho robot, ch... | vi |
There has never been a more exciting time in the overlapping areas of nuclear physics, particle physics and relativistic astrophysics than today. Orbiting observatories such as the Hubble Space Telescope, Rossi X-ray Timing Explorer (RXTE), Chandra X-ray satellite, and the X-ray Multi Mirror Mission (XMM) have extended... | Nunca ha habido un momento más emocionante en las áreas superpuestas de la física nuclear, la física de partículas y la astrofísica relativista que el actual. Observatorios en órbita como el Telescopio Espacial Hubble, el Explorador de Rayos X de Tiempo-Rápido Rossi (RXTE), el satélite de rayos X Chandra y la Misión de... | es |
We present optical photopolarimetric observations of the BL Lac object S4 0954+658 obtained with the 70-cm telescope in Crimea, 40-cm telescope in St.Petersburg, and 1.8-m Perkins telescope at Lowell Observatory (Flagstaff, Az). After a faint state with a brightness level R ~17.6 mag registered in the first half of Jan... | Presentamos observaciones fotopolarimétricas ópticas del objeto BL Lac S4 0954+658 obtenidas con el telescopio de 70 cm en Crimea, el telescopio de 40 cm en San Petersburgo y el telescopio Perkins de 1,8 m en el Observatorio Lowell (Flagstaff, AZ). Tras un estado tenue con un nivel de brillo R ~17,6 mag registrado en l... | es |
Within the framework of classical field theory, the connection between the Dirac field as the field of matter and the spacetime metric is discussed. Polarization structure of the Dirac field is shown to be rich enough to determine the spacetime metric locally and to explain the emergence of observed matter as localized... | No âmbito da teoria clássica de campos, discute-se a conexão entre o campo de Dirac, enquanto campo da matéria, e a métrica do espaço-tempo. Mostra-se que a estrutura de polarização do campo de Dirac é suficientemente rica para determinar localmente a métrica do espaço-tempo e explicar o surgimento da matéria observada... | pt |
A new kind of quantum indeterminacy of transverse position is shown to arise from quantum degrees of freedom of spacetime, based on the assumption that classical trajectories can be defined no better than the diffraction limit of Planck scale waves. Indeterminacy of the angular orientation of particle trajectories due ... | Jenis baru ketidakpastian kuantum dari posisi transversal ditunjukkan muncul dari derajat kebebasan kuantum ruangwaktu, berdasarkan asumsi bahwa lintasan klasik tidak dapat didefinisikan lebih baik daripada batas difraksi gelombang skala Planck. Ketidakpastian orientasi sudut lintasan partikel akibat dualitas gelombang... | id |
Within the framework of classical field theory, the connection between the Dirac field as the field of matter and the spacetime metric is discussed. Polarization structure of the Dirac field is shown to be rich enough to determine the spacetime metric locally and to explain the emergence of observed matter as localized... | Sa loob ng balangkas ng klasikong teorya ng field, tinalakay ang ugnayan sa pagitan ng Dirac field bilang field ng materia at ng spacetime metric. Ipinakita na sapat na mayaman ang estruktura ng polarisasyon ng Dirac field upang matukoy nang lokal ang spacetime metric at upang ipaliwanag ang paglitaw ng obserbadong mat... | tl |
We describe the construction of a database of extremely metal-poor (EMP) stars in the Galactic halo whose elemental abundances have been determined. Our database contains detailed elemental abundances, reported equivalent widths, atmospheric parameters, photometry, and binarity status, compiled from papers in the recen... | 은하 헤일로 내에서 원소 조성이 측정된 극도로 금속 농도가 낮은(EMP) 별들의 데이터베이스를 구축한 과정을 설명한다. 본 데이터베이스는 [Fe/H] < -2.5인 EMP 헤일로 별들을 연구한 최근 문헌의 논문들로부터 취합한 상세한 원소 조성, 보고된 동등폭, 대기 파라미터, 광도 측정값, 그리고 이중성 여부를 포함한다. 이 데이터베이스의 취합 절차는 온라인 저널에서 제공하는 전자 테이블 형태의 자료를 효율적으로 수집할 수 있도록 설계되었다. 또한 다양한 기준에 따라 자료를 검색할 수 있고 저장된 변수들 간의 관계를 그래픽적으로 탐색할 수 있는 자료 검색 시스템도 개... | ko |
We present optical photopolarimetric observations of the BL Lac object S4 0954+658 obtained with the 70-cm telescope in Crimea, 40-cm telescope in St.Petersburg, and 1.8-m Perkins telescope at Lowell Observatory (Flagstaff, Az). After a faint state with a brightness level R ~17.6 mag registered in the first half of Jan... | Apresentamos observações fotopolarimétricas ópticas do objeto BL Lac S4 0954+658 obtidas com o telescópio de 70 cm na Criméia, o telescópio de 40 cm em São Petersburgo e o telescópio Perkins de 1,8 m no Observatório Lowell (Flagstaff, AZ). Após um estado fraco com nível de brilho R ~17,6 mag registrado na primeira meta... | pt |
Multisensory object-centric perception, reasoning, and interaction have been a key research topic in recent years. However, the progress in these directions is limited by the small set of objects available -- synthetic objects are not realistic enough and are mostly centered around geometry, while real object datasets ... | Çok duyulu nesne merkezli algılama, akıl yürütme ve etkileşim son yıllarda önemli bir araştırma konusu olmuştur. Ancak bu alanlardaki ilerleme mevcut nesne sayısının az olmasıyla sınırlıdır—sentetik nesneler yeterince gerçekçi değildir ve çoğunlukla geometriye odaklanır, gerçek nesne veri kümeleri ise YCB gibi uluslara... | tr |
We present a unified picture of outflowing gas from the X-ray binary system Hercules X-1/HZ Herculis. We suggest that the outflowing gas (a wind) causes UV emission seen in mid-eclipse, narrow UV absorption lines, and broad UV P Cygni lines. Observations with the FOS and STIS spectrographs on the Hubble Space Telescope... | Presentiamo un quadro unificato del gas in fuoriuscita dal sistema binario a raggi X Hercules X-1/HZ Herculis. Proponiamo che il gas in fuoriuscita (un vento) sia responsabile dell'emissione ultravioletta (UV) osservata a metà eclissi, delle righe di assorbimento UV strette e delle righe ampie di tipo P Cygni nell'ultr... | it |
We propose Otiy, a node-centric location service that limits the impact of location updates generate by mobile nodes in IEEE802.11-based wireless mesh networks. Existing location services use node identifiers to determine the locator (aka anchor) that is responsible for keeping track of a node's location. Such a strate... | Nous proposons Otiy, un service de localisation centré sur les nœuds qui limite l'impact des mises à jour de localisation générées par les nœuds mobiles dans les réseaux maillés sans fil basés sur IEEE802.11. Les services de localisation existants utilisent les identifiants des nœuds pour déterminer le localisateur (ap... | fr |
The evolution of a walker in standard "Discrete-time Quantum Walk (DTQW)" is determined by coin and shift unitary operators. The conditional shift operator shifts the position of the walker to right or left by unit step size while the direction of motion is specified by the coin operator. This scenario can be generaliz... | Ang pagbabago ng isang tagalakad sa karaniwang "Discrete-time Quantum Walk (DTQW)" ay tinutukoy ng mga unitary na operador na barya at paglipat. Ang kondisyonal na operador ng paglipat ay naglilipat ng posisyon ng tagalakad pakanan o pakaliwa ng isang yunit na sukat ng hakbang, kung saan ang direksyon ng paggalaw ay ti... | tl |
The generalized belief propagation (GBP), introduced by Yedidia et al., is an extension of the belief propagation (BP) algorithm, which is widely used in different problems involved in calculating exact or approximate marginals of probability distributions. In many problems, it has been observed that the accuracy of GB... | Обобщённое распространение доверия (GBP), введённое Иедидией и др., представляет собой расширение алгоритма распространения доверия (BP), который широко используется в различных задачах, связанных с вычислением точных или приближённых маргиналов вероятностных распределений. Во многих задачах было замечено, что точность... | ru |
Transportation systems often rely on understanding the flow of vehicles or pedestrian. From traffic monitoring at the city scale, to commuters in train terminals, recent progress in sensing technology make it possible to use cameras to better understand the demand, i.e., better track moving agents (e.g., vehicles and p... | 교통 시스템은 종종 차량이나 보행자의 흐름을 이해하는 데 의존한다. 도시 규모의 교통 모니터링부터 철도역사 내 통근자에 이르기까지, 최근 센서 기술의 발전으로 카메라를 활용해 수요를 더 잘 이해하고, 즉 움직이는 개체(예: 차량 및 보행자)를 더 정확하게 추적하는 것이 가능해졌다. 드론, 차량, 또는 건축 환경에 고정된 형태로 카메라가 설치되든 간에, 그들은 필연적으로 산발적으로 존재하게 된다. 우리는 서로 겹치지 않는 시야 영역에서 촬영된 이미지들 간에 동일한 개체를 재식별하는 기술을 개발해야 한다. 이를 시각적 재식별 과제라 한다. 최신 기법들은 크로스엔트로피 손... | ko |
The mixing of the quasifission component to the fissionlike cross section causes ambiguity in the quantitative estimation of the complete fusion cross section from the observed angular and mass distributions of the binary products. We show that the partial cross section of quasifission component of binary fragments cov... | Smíchání kvazíštěpné složky do průřezu podobného štěpení způsobuje nejednoznačnost při kvantitativním odhadu průřezu úplného fúzního procesu z pozorovaných úhlových a hmotnostních rozdělení binárních produktů. Ukazujeme, že parciální průřez kvazíštěpné složky binárních fragmentů pokrývá celý rozsah hodnot úhlového mome... | cs |
Permutation entropy techniques can be useful in identifying anomalies in paleoclimate data records, including noise, outliers, and post-processing issues. We demonstrate this using weighted and unweighted permutation entropy of water-isotope records in a deep polar ice core. In one region of these isotope records, our ... | Técnicas de entropia de permutação podem ser úteis na identificação de anomalias em registros de dados paleoclimáticos, incluindo ruído, valores atípicos e problemas decorrentes do pós-processamento. Demonstramos isso utilizando entropia de permutação ponderada e não ponderada de registros de isótopos de água em um tes... | pt |
Privacy has become a major concern in Online Social Networks (OSNs) due to threats such as advertising spam, online stalking and identity theft. Although many users hide or do not fill out their private attributes in OSNs, prior studies point out that the hidden attributes may be inferred from some other public informa... | La privacy è diventata una questione fondamentale nei Social Network Online (OSN) a causa di minacce come lo spam pubblicitario, lo stalking online e il furto di identità. Sebbene molti utenti nascondano o non inseriscano nei loro profili gli attributi privati, studi precedenti indicano che tali attributi nascosti potr... | it |
Self-supervised methods play an increasingly important role in monocular depth estimation due to their great potential and low annotation cost. To close the gap with supervised methods, recent works take advantage of extra constraints, e.g., semantic segmentation. However, these methods will inevitably increase the bur... | Les méthodes auto-supervisées jouent un rôle de plus en plus important dans l'estimation de la profondeur monoculaire en raison de leur grand potentiel et de leur faible coût d'annotation. Pour combler l'écart avec les méthodes supervisées, les travaux récents exploitent des contraintes supplémentaires, par exemple la ... | fr |
We study the Wouthuysen-Field coupling at early universe with numerical solutions of the integrodifferential equation describing the kinetics of photons undergoing resonant scattering. The numerical solver is developed based on the weighted essentially non-oscillatory (WENO) scheme for the Boltzmann-like integrodiffere... | Sinusuri namin ang Wouthuysen-Field coupling sa maagang uniberso gamit ang mga numerikal na solusyon ng integrodyferensyal na ekwasyon na naglalarawan sa kilusan ng mga photon na sumasailalim sa resonant scattering. Ang numerikal na solver ay binuo batay sa weighted essentially non-oscillatory (WENO) scheme para sa Bol... | tl |
We present a unified picture of outflowing gas from the X-ray binary system Hercules X-1/HZ Herculis. We suggest that the outflowing gas (a wind) causes UV emission seen in mid-eclipse, narrow UV absorption lines, and broad UV P Cygni lines. Observations with the FOS and STIS spectrographs on the Hubble Space Telescope... | Kami menghadirkan gambaran terpadu mengenai gas yang mengalir keluar dari sistem biner-X Hercules X-1/HZ Herculis. Kami mengusulkan bahwa gas yang mengalir keluar (angin) menyebabkan emisi UV yang teramati saat pertengahan gerhana, garis serapan UV sempit, serta garis P Cygni UV lebar. Pengamatan dengan spektrograf FOS... | id |
The mixing of the quasifission component to the fissionlike cross section causes ambiguity in the quantitative estimation of the complete fusion cross section from the observed angular and mass distributions of the binary products. We show that the partial cross section of quasifission component of binary fragments cov... | A mistura do componente quasefissão à seção de choque do tipo fissão causa ambiguidade na estimativa quantitativa da seção de choque de fusão completa a partir das distribuições angulares e de massa observadas dos produtos binários. Mostramos que a seção de choque parcial do componente quasefissão dos fragmentos binári... | pt |
For several decades, the interest of the scientific community in aneutronic fusion reactions such as proton-Boron fusion has grown because of potential applications in different fields. Recently, many scientific teams in the world have worked experimentally on the possibility to trigger proton-Boron fusion using intens... | Seit mehreren Jahrzehnten wächst das Interesse der wissenschaftlichen Gemeinschaft an aneutronischen Fusionsreaktionen wie der Proton-Bor-Fusion aufgrund potenzieller Anwendungen in verschiedenen Bereichen. Kürzlich haben weltweit zahlreiche wissenschaftliche Teams experimentell an der Möglichkeit gearbeitet, die Proto... | de |
Foreseeing the era of high spatial resolution measurements of the Sunyaev-Zel'dovich effect (SZE) in clusters of galaxies, we present a prototype analysis of this sort combined with Chandra X-ray data. It is applied specifically to RX J1347-1145 at z=0.451, the most X-ray-luminous galaxy cluster known, for which the hi... | Antevendo a era das medições de alta resolução espacial do efeito Sunyaev-Zel'dovich (SZE) em aglomerados de galáxias, apresentamos uma análise protótipo desse tipo combinada com dados de raios X do Chandra. Essa análise é aplicada especificamente a RX J1347-1145 em z=0,451, o aglomerado de galáxias mais luminoso em ra... | pt |
Although accelerator technology has matured sufficiently, state-of-the-art X-ray linacs for radiotherapy and cargo-scanning capture merely 30-50% of the electrons from a thermionic cathode, requiring a higher cathode current and leaving uncaptured electrons to cause problems due to back bombardment, shortening of catho... | Хотя технология ускорителей достаточно хорошо развита, современные линейные ускорители СВЧ-диапазона для лучевой терапии и досмотра грузов улавливают лишь 30–50 % электронов с термоэмиссионного катода, что требует более высокого тока катода и приводит к проблемам из-за обратного бомбардирования, сокращения срока службы... | ru |
We study the Wouthuysen-Field coupling at early universe with numerical solutions of the integrodifferential equation describing the kinetics of photons undergoing resonant scattering. The numerical solver is developed based on the weighted essentially non-oscillatory (WENO) scheme for the Boltzmann-like integrodiffere... | Estudamos o acoplamento de Wouthuysen-Field no universo primordial utilizando soluções numéricas da equação integrodiferencial que descreve a cinética de fótons submetidos a espalhamento ressonante. O resolvedor numérico foi desenvolvido com base no esquema essencialmente não oscilatório com pesos (WENO) aplicado à equ... | pt |
The Lorentz gas is a billiard model involving a point particle diffusing deterministically in a periodic array of convex scatterers. In the two dimensional finite horizon case, in which all trajectories involve collisions with the scatterers, displacements scaled by the usual diffusive factor $\sqrt{t}$ are normally di... | 로렌츠 기체는 점입자가 주기적으로 배열된 볼록한 산란체들 사이에서 결정론적으로 확산하는 빌리아드 모형이다. 산란체와의 충돌을 포함하는 모든 궤적이 존재하는 2차원 유한 수평선의 경우, 분산 인자 $\sqrt{t}$로 스케일링한 변위는 1981년 부니모비치와 시나이에 의해 보여진 바와 같이 정규분포를 따른다. 무한 수평선의 경우에는 운동이 초확산적이지만, $\sqrt{t\ln t}$로 스케일링하면 정규분포가 회복되며, 그 분산에 대한 명시적 공식이 존재한다. 본 연구에서는 임의의 차원에서 무한 수평선의 경우를 탐구하여 평균 제곱 변위에 대한 명시적 공식을 제시하고, 이... | ko |
To realize efficient computational fluid dynamics (CFD) prediction of two-phase flow, a multi-scale framework was proposed in this paper by applying a physics-guided data-driven approach. Instrumental to this framework, Feature Similarity Measurement (FSM) technique was developed for error estimation in two-phase flow ... | Để hiện thực hóa dự đoán dòng chảy hai pha bằng động lực học chất lỏng tính toán (CFD) hiệu quả, bài báo này đề xuất một khuôn khổ đa quy mô dựa trên phương pháp tiếp cận dữ liệu do vật lý định hướng. Đóng vai trò then chốt trong khuôn khổ này, kỹ thuật Đo lường Độ tương đồng Đặc trưng (FSM) đã được phát triển nhằm ước... | vi |
Let ${\widetilde {\mathcal O}}(\mathbf B)$ be the category of (open) subcategories of a topological groupoid ${\mathbf B}.$ This paper concerns with the ${\mathbf {Cat}}$-valued sheaves over category ${\widetilde {\mathcal O}}(\mathbf B).$ Since ${\mathbf {Cat}}$ is not a concrete category, traditional definition of pr... | Sea ${\widetilde {\mathcal O}}(\mathbf B)$ la categoría de subcategorías (abiertas) de un grupoide topológico ${\mathbf B}.$ Este artículo trata sobre los haces con valores en ${\mathbf {Cat}}$ sobre la categoría ${\widetilde {\mathcal O}}(\mathbf B).$ Dado que ${\mathbf {Cat}}$ no es una categoría concreta, la definic... | es |
We present a unified picture of outflowing gas from the X-ray binary system Hercules X-1/HZ Herculis. We suggest that the outflowing gas (a wind) causes UV emission seen in mid-eclipse, narrow UV absorption lines, and broad UV P Cygni lines. Observations with the FOS and STIS spectrographs on the Hubble Space Telescope... | Nous présentons une vue unifiée du gaz en écoulement sortant du système binaire à rayons X Hercules X-1/HZ Herculis. Nous suggérons que ce gaz en écoulement (un vent) est responsable de l'émission ultraviolette observée en milieu d'éclipse, des raies d'absorption ultraviolettes étroites et des larges raies ultraviolett... | fr |
Integrating sensing into standardized communication systems can potentially benefit many consumer applications that require both radio frequency functions. However, without an effective sensing method, such integration may not achieve the expected gains of cost and energy efficiency. Existing sensing methods, which use... | 標準化された通信システムにセンシング機能を統合することは、無線周波数機能の両方を必要とする多くの消費者向け応用において、潜在的に多くの利点をもたらす可能性がある。しかし、効果的なセンシング手法がなければ、このような統合はコストおよびエネルギー効率の期待される利点を達成できない可能性がある。通信ペイロード信号を利用する既存のセンシング手法は、センシング性能が限定的であるか、あるいは高い複雑さに悩まされている。本論文では、フーリエ変換に支配される複雑さしかもたず、さまざまなセンシングニーズに適応できる柔軟性を提供する、新しい柔軟なセンシングフレームワークを提案する。エコー信号の全体ブロックを均等にサブブロックに分割することを提案し、隣接... | ja |
To deploy a well-trained CNN model on low-end computation edge devices, it is usually supposed to compress or prune the model under certain computation budget (e.g., FLOPs). Current filter pruning methods mainly leverage feature maps to generate important scores for filters and prune those with smaller scores, which ig... | 为了在低端计算边缘设备上部署训练良好的卷积神经网络（CNN）模型，通常需要在一定的计算预算（例如FLOPs）下对模型进行压缩或剪枝。现有的滤波器剪枝方法主要利用特征图生成滤波器的重要性评分，并剪除评分较低的滤波器，这种方法忽略了输入批次的差异对滤波器稀疏结构带来的影响。本文提出了一种数据无关的滤波器剪枝方法，该方法使用一个名为Dagger模块的辅助网络来引导剪枝过程，并以预训练的权重作为输入，学习每个滤波器的重要性。此外，为了在特定FLOPs约束下实现滤波器剪枝，我们引入了一种显式的、感知FLOPs的正则化项，直接推动剪枝过程以达到目标FLOPs。在CIFAR-10和ImageNet数据集上的大量实验结果表明，我们的方法优于其他最先... | zh |
Charginos $\tilde{\chi}^\pm$ and neutralinos $\tilde{\chi}^0$ in supersymmetric theories can be produced copiously at $e^+e^-$ colliders and their properties can be measured with high accuracy. Consecutively to the chargino system, in which the SU(2) gaugino parameter $M_2$, the higgsino mass parameter $\mu$ and $\tan\... | Les charginos $\tilde{\chi}^\pm$ et les neutralinos $\tilde{\chi}^0$ dans les théories supersymétriques peuvent être produits abondamment dans des collisionneurs $e^+e^-$ et leurs propriétés peuvent être mesurées avec une grande précision. Après l'étude du système des charginos, dans lequel les paramètres $M_2$ du gaug... | fr |
A general framework for the study of regular variation (RV) is that of Polish star-shaped metric spaces, while recent developments in [1] have discussed RV with respect to some properly localised boundedness $\mathcal{B}$ imposing weak assumptions on the structure of Polish space. Along the lines of the latter approa... | Un ambito generale per lo studio della variazione regolare (RV) è quello degli spazi metrici polacchi stellati, mentre sviluppi recenti in [1] hanno affrontato la RV rispetto a una limitatezza opportunamente localizzata $\mathcal{B}$, imponendo ipotesi deboli sulla struttura dello spazio polacco. Seguendo tale approcci... | it |
A new kind of quantum indeterminacy of transverse position is shown to arise from quantum degrees of freedom of spacetime, based on the assumption that classical trajectories can be defined no better than the diffraction limit of Planck scale waves. Indeterminacy of the angular orientation of particle trajectories due ... | 一种新型的横向位置量子不确定性被证明源于时空的量子自由度，其依据是经典轨迹的定义精度不可能优于普朗克尺度波的衍射极限。由于在普朗克尺度下波粒二象性导致粒子轨迹角取向的不确定性，从而引起近平坦时空度规的不确定性，这种不确定性被描述为沿类光轨迹不同事件处横向位置算符之间存在一个微小但非零的量子对易关系。本文还基于黑洞蒸发过程中幺正性的要求，独立推导出相同效应。该不确定性被解释为一种普适的全息量子时空噪声，其度规扰动幅度具有与频率无关的谱密度，h_H^2^{1/2} \simeq \sqrt{l_P}=2.3 \times 10^{-22} /\sqrt{Hz}，其中l_P表示普朗克长度。估计利用当前类似于LIGO和LISA的干涉仪技术可... | zh |
Permutation entropy techniques can be useful in identifying anomalies in paleoclimate data records, including noise, outliers, and post-processing issues. We demonstrate this using weighted and unweighted permutation entropy of water-isotope records in a deep polar ice core. In one region of these isotope records, our ... | 順列エントロピーの手法は、ノイズ、外れ値、および後処理の問題を含む古気候データ記録における異常の特定に有効である可能性がある。本研究では、極地の深層氷床コアに記録された水同位体データの重み付きおよび重みなし順列エントロピーを用いて、その有用性を示す。これらの同位体記録のある領域において、以前の計算ではトレースの複雑さ、特に各時間ステップで現れる新たな情報量に急激な変化があることが明らかになった。我々は、この現象は古くなった実験室装置によって導入されたノイズによるものであると推測した。本論文では、より高度な実験室装置を用いて氷床コアの一部を再分析することで、この推測を検証する。新しいデータの順列エントロピーのトレースには、異常なノイズ... | ja |
We consider an unmanned aerial vehicle enabled (UAV-enabled) fog-radio access network (F-RAN) in which UAVs are considered as flying remote radio heads (RRH) equipped with caching and cooperative communications capabilities. We are mainly focus on probabilistic/randomized content placement strategy, and accordingly for... | 우리는 캐싱 및 협력적 통신 기능을 갖춘 비행 원격 무선 헤드(RRH)로 UAV를 고려한 무인 항공기 기반(UAV 기반) 안개 무선 접속 네트워크(F-RAN)를 고려한다. 본 연구는 주로 확률적/무작위 콘텐츠 배치 전략에 초점을 두며, 이에 따라 콘텐츠 배치를 최적화 문제로 수식화한다. 이후 제안된 콘텐츠 배치 방식의 효율성을 평균 시스템 용량 및 에너지 효율성 측면에서 평가한다. 결과는 협력적 통신이 지배적인 시계선(LOS) 수신 간섭의 영향을 효과적으로 억제함으로써 UAV 기반 엣지 통신에서 핵심적인 역할을 한다는 것을 나타낸다. 또한 협력적 캐시 기반 UAV F... | ko |
The light emission rate of a single quantum dot can be drastically enhanced by embedding it in a resonant semiconductor microcavity. This phenomenon is known as the Purcell effect, and the coupling strength between emitter and cavity can be quantified by the Purcell factor. The most natural way for probing the Purcell ... | La tasa de emisión de luz de un punto cuántico individual puede aumentar drásticamente al incrustarlo en una microcavidad semiconductor resonante. Este fenómeno se conoce como efecto Purcell, y la intensidad del acoplamiento entre el emisor y la cavidad puede cuantificarse mediante el factor Purcell. La forma más natur... | es |
We study theoretically the low-energy hole states in Si, Ge, and Ge/Si core/shell nanowires (NWs). The NW core in our model has a rectangular cross section, the results for a square cross section are presented in detail. In the case of Ge and Ge/Si core/shell NWs, we obtain very good agreement with previous theoretical... | Ang pag-aaral na ito ay teoretikal na pagsusuri sa mga estado ng butas (hole) na may mababang enerhiya sa loob ng Si, Ge, at Ge/Si core/shell nanowire (NWs). Ang core ng NW sa aming modelo ay may hugis na parihaba sa cross section, at ang mga resulta para sa square cross section ay detalyadong iniharap. Sa kaso ng Ge a... | tl |
We study theoretically the low-energy hole states in Si, Ge, and Ge/Si core/shell nanowires (NWs). The NW core in our model has a rectangular cross section, the results for a square cross section are presented in detail. In the case of Ge and Ge/Si core/shell NWs, we obtain very good agreement with previous theoretical... | Teoreticky studujeme nízkoenergetické děrové stavy v nanodrátích (NWs) z křemíku, germania a germanium/křemík jádro/plášť. Jádro nanodrátu v našem modelu má obdélníkový průřez, podrobně jsou prezentovány výsledky pro čtvercový průřez. V případě Ge a Ge/Si jádro/plášť nanodrátů získáváme velmi dobré shody s předchozími ... | cs |
With COVID-19 affecting every country globally and changing everyday life, the ability to forecast the spread of the disease is more important than any previous epidemic. The conventional methods of disease-spread modeling, compartmental models, are based on the assumption of spatiotemporal homogeneity of the spread of... | Angesichts der weltweiten Auswirkungen von COVID-19 und der Veränderung des alltäglichen Lebens ist die Fähigkeit, die Ausbreitung der Krankheit vorherzusagen, wichtiger als bei jeder vorherigen Epidemie. Die herkömmlichen Methoden zur Modellierung der Krankheitsausbreitung, sogenannte Kompartimentmodelle, basieren auf... | de |
The generalized belief propagation (GBP), introduced by Yedidia et al., is an extension of the belief propagation (BP) algorithm, which is widely used in different problems involved in calculating exact or approximate marginals of probability distributions. In many problems, it has been observed that the accuracy of GB... | Phép lan truyền niềm tin tổng quát hóa (GBP), do Yedidia và cộng sự giới thiệu, là một mở rộng của thuật toán lan truyền niềm tin (BP), vốn được sử dụng rộng rãi trong nhiều bài toán liên quan đến việc tính toán các phân bố biên chính xác hoặc xấp xỉ. Trong nhiều bài toán, người ta quan sát thấy độ chính xác của GBP vư... | vi |
En este trabajo, se obtiene una expresi\'on num\'erica para calcular el espectro de emisi\'on de un sistema microcavidad-punto cu\'antico usando una teor\'ia de campo medio en el formalismo de la matriz densidad. El sistema modelado es un micropilar semiconductor que contiene un \'unico punto cu\'antico en el interior ... | In dieser Arbeit wird ein numerischer Ausdruck zur Berechnung des Emissionsspektrums eines Systems aus Quantenpunkt und Mikrokavität unter Verwendung einer Mittelfeldtheorie im Formalismus der Dichtematrix hergeleitet. Das modellierte offene System ist ein typischer halbleiterbasierter Mikrosäulenkristall, der einen ei... | de |
Taylor expansion in powers of baryon chemical potential ($\mu_B$) is an oft-used method in lattice QCD to compute QCD thermodynamics for $\mu_B>0$. Based only upon the few known lowest order Taylor coefficients, it is difficult to discern the range of $\mu_B$ where such an expansion around $\mu_B=0$ can be trusted. We ... | A expansão em série de Taylor em potências do potencial químico de bárions ($\mu_B$) é um método frequentemente utilizado em QCD em rede para calcular a termodinâmica da QCD para $\mu_B>0$. Com base apenas nos poucos coeficientes de Taylor de mais baixa ordem conhecidos, é difícil determinar a faixa de $\mu_B$ na qual ... | pt |
Understanding the nature of neutrino masses will require physics beyond the long-standing Standard Model of particle physics. Neutrinoless double beta decay experiments like the Cryogenic Underground Observatory for Rare Events (CUORE) are uniquely suited for probing the remaining mysteries of neutrino mass, particular... | Понимание природы масс нейтрино потребует физики, выходящей за рамки устоявшейся Стандартной модели физики частиц. Эксперименты по безнейтрино-двойному бета-распаду, такие как Криогенная Подземная Обсерватория для Редких Явлений (CUORE), особенно подходят для изучения оставшихся загадок массы нейтрино, в частности вопр... | ru |
We present optical photopolarimetric observations of the BL Lac object S4 0954+658 obtained with the 70-cm telescope in Crimea, 40-cm telescope in St.Petersburg, and 1.8-m Perkins telescope at Lowell Observatory (Flagstaff, Az). After a faint state with a brightness level R ~17.6 mag registered in the first half of Jan... | Předkládáme optická fotopolarimetrická pozorování objektu typu BL Lac S4 0954+658 získaná pomocí 70cm dalekohledu v Krymu, 40cm dalekohledu ve St. Petěrburku a 1,8m Perkinsovým dalekohledem v observatoři Lowell (Flagstaff, Az). Po období slabé jasnosti s úrovní jasnosti R ~17,6 mag zaznamenané v první polovině ledna 20... | cs |
Among the combinations $L_e-L_\mu$, $L_e-L_\tau$ and $L_\mu-L_\tau$ any one can be gauged in anomaly free way with the standard model gauge group. The masses of these gauge bosons can be so light that it can induce long-range forces on the Earth due to the electrons in the Sun. This type of forces can be constrained si... | Entre as combinações $L_e-L_\mu$, $L_e-L_\tau$ e $L_\mu-L_\tau$, qualquer uma pode ser introduzida como simetria de gauge de forma livre de anomalias com o grupo de gauge do modelo padrão. As massas desses bósons de gauge podem ser tão pequenas que poderiam induzir forças de longo alcance na Terra devido aos elétrons p... | pt |
I review recent numerical and analytical work on the feedback from both low- and high-mass cluster stars into their gasoeus environment. The main conclusions are that i) outflow driving appears capable of maintaing the turbulence in parsec-sized clumps and retarding their collapse from the free-fall rate, although ther... | J'examine les travaux récents, numériques et analytiques, portant sur le retour d'énergie des étoiles de faible et de haute masse dans leur environnement gazeux. Les principales conclusions sont les suivantes : i) l'action des jets semble capable de maintenir la turbulence dans des amas de taille parsec et de retarder ... | fr |
The emerging new paradigm of technologies, the internet of things, entails a process of device miniaturization to combine several functional components, such as sensors, actuators, and powering elements, in a single individual on-chip platform. An essential requirement is for the devices to have a small footprint and t... | 新たな技術パラダイムである「モノのインターネット（IoT）」は、センサーやアクチュエーター、電源要素などの複数の機能的構成要素を、単一のチップ上プラットフォームに統合するためのデバイス小型化プロセスを伴う。この際、デバイスには小型のフットプリントが求められるため、三次元的に拡張して十分な性能を発揮できるようにする必要がある。複雑な構造を持ち、事実上任意のサイズのデバイスを実現する適切な手法として、三次元印刷技術がある。これまでこの技術はマクロスケールでのみ応用されてきた。本研究では、二次元の原子層状遷移金属ダイカルコゲナイドをロボキャスティング法により世界で初めて三次元印刷し、これを小型化可能なスーパーキャパシタとして利用できること... | ja |
The evolution of a walker in standard "Discrete-time Quantum Walk (DTQW)" is determined by coin and shift unitary operators. The conditional shift operator shifts the position of the walker to right or left by unit step size while the direction of motion is specified by the coin operator. This scenario can be generaliz... | L'evoluzione di un camminatore in un "Random Walk Quantistico in Tempo Discreto (DTQW)" standard è determinata da operatori unitari di moneta e di spostamento. L'operatore di spostamento condizionato sposta la posizione del camminatore a destra o a sinistra di un passo unitario, mentre la direzione del moto è specifica... | it |
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