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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 |
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