Autor: Horodecki, P. - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: On Mixed States Entanglement and Quantum Communication: Aspects of Quantum Channels Theory
Autorzy:: Horodecki, P.
Tematy:: 03.67.-a
03.65.Ca
03.67.Hk; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/2030474.pdf Link otwiera się w nowym oknie
Opis:: Basic aspects of quantum communication based on quantum channels theory are reviewed together with suitable examples. The key notion of quantum channel capacity is discussed. The role of mixed states entanglement as a practical tool in quantum channels theory is explained in detail. Application of recent results on non-positive partial transpose bound entanglement conjecture to binding entanglement channels shows that validity of the conjecture for some states implies nonadditivity of two-way quantum channel capacity. Some aspects of robustness of entanglement in context of positive maps theory are also discussed.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Report on multiconfiguration-interaction calculations of transitions in lead
Autorzy:: Horodecki, P.
Sienkiewicz, J. E.
Tematy:: multiconfiguration-interaction calculations
lead transitions
quadruple electric transitions
GRASP2; Pokaż więcej
Wydawca:: Politechnika Gdańska
Powiązania:: https://bibliotekanauki.pl/articles/1954025.pdf Link otwiera się w nowym oknie
Opis:: Relativistic multiconfiguration-interaction calculations of the dipole magnetic and quadruple electric transitions in the lead atom have been calculated. The computer program GRASP2 (General Relativistic Atomic Structure) has been used.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Odnowienie naturalne w rezerwacie przyrody "Czmoń" (Wielkopolska)
Natural regeneration in the 'Czmon' nature reserve (Wielkopolska Region)
Autorzy:: Horodecki, P.
Wiczynska, K.
Jagodzinski, A.M.
Tematy:: lesnictwo
rezerwaty przyrody
rezerwat Czmon
odnowienia lasu
odnowienia naturalne
struktura wiekowa
struktura gatunkowa; Pokaż więcej
Wydawca:: Instytut Badawczy Leśnictwa
Powiązania:: https://bibliotekanauki.pl/articles/46173.pdf Link otwiera się w nowym oknie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Odnowienie naturalne drzew i krzewów w płatach dobrze zachowanego oraz spinetyzowanego grądu środkowoeuropejskiego Galio sylvatici-Carpinetum (R.Tx.1937) Oberd. 1957
Natural regeneration in the well-preserved and Scots pine dominated oak - hornbeam forest community Galio sylvatici-Carpinetum (R.Tx.1937) Oberd. 1957
Autorzy:: Rawlik, K.
Horodecki, P.
Jagodzinski, A.M.
Tematy:: grady
grad srodkowoeuropejski
sosna
nasadzenia
zespol Galio sylvatici-Carpinetum
drzewa
krzewy
odnowienia naturalne
regeneracja zbiorowisk; Pokaż więcej
Wydawca:: Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Leśny Zakład Doświadczalny. Centrum Edukacji Przyrodniczo-Leśnej w Rogowie
Powiązania:: https://bibliotekanauki.pl/articles/880184.pdf Link otwiera się w nowym oknie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Aboveground biomass allocation and accumulation in a chronosequence of young Pinus sylvestris stands growing on a lignite mine spoil heap
Autorzy:: Jagodzinski, A.M.
Kalucka, I.
Horodecki, P.
Oleksyn, J.
Tematy:: aboveground biomass
allocation
accumulation
chronosequence
age
young plant
Pinus sylvestris
stand
lignite mine
spoil heap; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Dendrologii PAN
Powiązania:: https://bibliotekanauki.pl/articles/41764.pdf Link otwiera się w nowym oknie
Opis:: It is not clear to what extent trees growing on anthropogenic sites change their growth and biomass allocation to different organs. We assessed the aboveground biomass in a chronosequence of six Scots pine monocultures (between 6 and 20 years old) to examine how precisely the site-specific or control allometric equations may reflect the value of biomass accumulation and allocation in stands growing in harsh site conditions on the overlayer spoil heap made as a result of opencast brown coal mining. The site is characterized by poor edaphic and water conditions and nutrient deficiency. The control equations were developed from Scots pine stands growing on post-agricultural lands in the close vicinity of the spoil heap. We found that equation type significantly influenced results of predicted biomass accumulation for all biomass components studied (although results were only marginally significant for total aboveground biomass, P=0.08). Total aboveground biomass in younger stands (6–9 years old) estimated using site-specific equations was >40% higher and for older stands (17–20 years old) from 7 to 27% lower than estimated using equations developed for the control sites. Our study revealed that under harsh environmental conditions in spoil heaps, biomass of young Scots pine stands significantly differ from values calculated based on control equations developed for more fertile soils with better water conditions in the same region. The control biomass equations may not be suitable to estimate biomass accumulation in stands growing on infertile habitats with poor water conditions, if the control equations are developed for nearby stands but growing under better site conditions.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Rozkład liści drzew w początkowych etapach dekompozycji w drzewostanach sosnowych i brzozowych rosnących na rekultywowanym zwałowisku pokopalnianym i terenach leśnych
Early stages of tree leaves decomposition in pine and birch stands growing on a reclaimed lignite mine spoilheap and forest areas
Autorzy:: Horodecki, P.
Nowinski, M.
Rawlik, K.
Jagodzinski, A.M.
Tematy:: sciolka
liscie
dekompozycja
ekosystemy inicjalne
drzewostany sosnowe
drzewostany brzozowe
tereny pokopalniane
zwalowiska pogornicze
rekultywacja
tereny lesne; Pokaż więcej
Wydawca:: Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Leśny Zakład Doświadczalny. Centrum Edukacji Przyrodniczo-Leśnej w Rogowie
Powiązania:: https://bibliotekanauki.pl/articles/881112.pdf Link otwiera się w nowym oknie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Zgrupowania roztoczy (Acari) pod drzewostanami sosnowymi na terenach leśnych i rekultywowanym zwałowisku zewnętrznym w Nadleśnictwie Bełchatów
Soil mite communities under Scots pine stands growing on forest sites and reclaimed lignite mine spoil heap in Belchatow Forest District
Autorzy:: Piasta, A.
Skorupski, M.
Horodecki, P.
Jagodzinski, A.M.
Tematy:: Kopalnia Wegla Brunatnego Belchatow
zwalowiska gornicze
zwalowiska zewnetrzne
rekultywacja
drzewostany sosnowe
zgrupowania zwierzat
roztocze
Acari
Mesostigmata
tereny lesne
Nadlesnictwo Belchatow; Pokaż więcej
Wydawca:: Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Leśny Zakład Doświadczalny. Centrum Edukacji Przyrodniczo-Leśnej w Rogowie
Powiązania:: https://bibliotekanauki.pl/articles/882084.pdf Link otwiera się w nowym oknie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: No-go theorem for device-independent security in relativistic causal theories
Autorzy:: Horodecki, K.
Salazar, Roberto
Saha, D.
Kamoń, M.
Goyeneche, D.
Ramanathan, R.
Horodecki, P.
Opis:: A fundamental question in device-independent quantum cryptography is to determine the minimal physical principle upon which the security of such a cryptographic protocol (such as for key distribution or for randomness generation) may be based. Since the seminal work on device-independent quantum key distribution by J. Barrett, L. Hardy, and A. Kent [Phys. Rev. Lett. 95, 010503 (2005)], a conjectured candidate for certification of device-independent security has been the principle of relativistic causality, namely the disallowance of causal loops. While this principle has thus far been equated with the no-signaling constraints, it has been shown recently that in multiparty Bell scenarios, the no-signaling constraints are sufficient but not necessary for relativistic causality, and a refined set of constraints has been proposed that more precisely capture the notion of relativistic causality. In this paper, we build upon this finding to show that, in contrast to the no-signaling constraints, the constraints of relativistic causality are not sufficient for certification of device-independent security. More specifically, we show that there exist correlations allowed by the causality principle that allow an adversary to gain complete information about the measurement outcomes of honest parties in any device-independent cryptographic protocol, thereby rendering the protocol completely insecure. As a tool to develop this adversarial attack strategy, we fully characterize the set of correlations allowed by relativistic causality in the tripartite Bell scenario of three parties, each performing two binary measurements, that may be of independent interest. We also demonstrate the difference between the relativistic causal correlations and those allowed by the usual no-signaling constraints by presenting explicit communication tasks wherein the two sets exhibit striking difference in their respective winning probabilities.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 9.

Tytuł:: Zbiorowiska roślinne doliny Czerwonej Wody w Parku Narodowym Gór Stołowych
Plant communities of the Czerwona Woda River Valley (Stołowe Mountains National Park)
Autorzy:: Pielech, R.
Malicki, M.
Smoczyk, M.
Jagodziński, A.
Dyderski, M.K.
Horodecki, P.
Wierzcholska, S.
Skorupski, M.
Kamczyc, J.
Kałucka, I.
Hachułka, M.
Gazda, A.
Tematy:: Gory Stolowe
doliny rzeczne
parki narodowe
Park Narodowy Gor Stolowych
dolina Czerwonej Wody
fitosocjologia
zbiorowiska roslinne
roslinnosc rzeczywista
roslinnosc potencjalna
river valley
riparian vegetation
plant communities
Stołowe Mountains
Central Sudetes; Pokaż więcej
Wydawca:: Instytut Badawczy Leśnictwa
Powiązania:: https://bibliotekanauki.pl/articles/1292420.pdf Link otwiera się w nowym oknie
Opis:: The Czerwona Woda River is the main watercourse in the Stołowe Mountains National Park and drains the major part of the Stołowe Mts. It was regulated in the past, but its channel has been spontaneously naturalized. Now, managed spruce forests grow along almost the entire length of this small mountain stream. The aims of the present study were to investigate diversity of plant communities connected with the Czerwona Woda stream and to prepare detailed vegetation maps. The results obtained can potentially be a reference for future restoration projects implemented in the Stołowe Mountains National Park. As a result of vegetation mapping, there were distinguished 20 plant communities representative of the current vegetation and 3 communities representative of the potential vegetation. Phytosociological data on the vegetation was documented by making 62 phytosociological relevés. Based on these, 9 forest communities were distinguished, of which 3 were classified into associations, 1 – into alliance, 5 – into secondary forest communities. Furthermore, there were distinguished 14 non-forest communities, of which 10 were classified into associations. Several of the phytosociological classes distinguished have been reported for the first time in the Stołowe Mountains National Park.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Limitations for private randomness repeaters
Autorzy:: Kostecki, Ryszard P.
Studziński, Michał
Horodecki, Karol
Salazar, Roberto
Opis:: Cryptographic protocols are often based on the two main resources: private randomness and private key. In this paper, we develop the relationship between these two resources. First, we show that any state containing perfect, directly accessible, private key (a private state) is a particular case of the state containing perfect, directly accessible, private randomness (an independent state). We then demonstrate a fundamental limitation on the possibility of transferring the privacy of random bits in quantum networks with an intermediate repeater station. More precisely, we provide an upper bound on the rate of repeated randomness in this scenario, similar to the one derived for private key repeaters. This bound holds for states with positive partial transposition. We further demonstrate the power of this upper bound by showing a gap between the localizable and the repeated private randomness for separable Werner states. In the case of restricted class of operations, we provide also a bound on repeated randomness which holds for arbitrary states.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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