Search results for "Low"
showing 10 items of 12024 documents
A survey on algebraic dilatations
2023
In this text, we wish to provide the reader with a short guide to recent works on the theory of dilatations in Commutative Algebra and Algebraic Geometry. These works fall naturally into two categories: one emphasises foundational and theoretical aspects and the other applications to existing theories.
Embedding “roadside equipment” into environmental assessment of transportation system: the case of safety barriers
2015
The work arises from the consideration that the environmental impact of a road cannot be limited to the analysis of its constituent materials, even if correctly analyzed in their life cycle. In fact, a given road not only consists of the pavement and subgrade, but also includes several different components and accessories (e.g. road marking, drainages, safety barriers, etc.) that contribute to set a road infrastructure in operative conditions. As a matter of fact, only limited attention has been paid in the scientific literature to roadside components, unlike pavement and traffic flow. In the present work, the environmental burden of one of these components, i.e. the safety barrier, has bee…
Impacts des réseaux viaires sur les mobilités urbaines : quelques illustrations
2008
This research aims to find the impact of the network shape and structure on the urban mobilities, in order to fight against the automobile dependency and to include the externalities in the network design. Three examples illustrate this objective. The first one shows the influence of the network shape on the pedestrian urban flows. The second one emphasizes how sensitive to the network structure is the efficiency of a very flexible Demand Responsive Transport. The third example demonstrates that the network metric is favourable to the automobile and how it can be possible to apply an alternative metric, called the “slow metric” to reduce the urban sprawling and the automobile dependency.
Badania historyczno-systemowe procesów w wielkich społeczno-terytorialnych systemach: metody modelowania semantycznego w sektorze transportu
2017
Artykuł prezentuje metody modelowania semantycznego procesów zachodzących w sektorze transportu państw członkowskich UE i analizę historyczno-systemową grupy systemów terytorialno-społecznych (STS)w porównywaniu z innymi systemami. Za podstawę przyjęto semantykę opartą na taksonomii transportu kolejowego. Badano zmiany infrastruktury i pracy przewozowej na tle procesów wytwarzania PKB. Analizą objęto retrospektywnie okresy 30-, 20- i 15-letnie. Modelowanie identyfikuje zmiany fazowe w STS, obiektywizuje oceny wpływu czynników geopolitycznych na rozwój i trendy przed- i pokryzysowe.
Analiza procesów transportowych w systemach społeczno - terytorialnych w kontekście zjawiska glokalizacji
2017
W artykule przedstawiono wyniki analizy procesów rozwoju regionalnego sektorów TSL (ST) wielkich systemów społeczno -terytorialnych (STS) w kontekście zjawisk globalizacyjnych i glokalizacyjnych.Analiza klasteryzacji terytorialnej i funkcjonalnej jest oparta o modele korelacyjne dynamiki czasowej i zbieżności strukturalno - funkcjonalnej infrastruktury kolejowej jako bazy ST w skalach czasowych – 150, 50 i 30 lat z oceną kwasi - okresowości i zbieżności na zbiorze 56 państw i wielkich STS – hiper-regionów z najbardziej rozwiniętymi ST. Udowodniono zmienność okresowości cykli zbieżności procesów i możliwość identyfikacji STS jako hiper-regionów transportowych.
EXTRACORPOREAL SHOCK WAVE THERAPY (ESWT) IN CHRONIC LOW BACK PAIN: A SYSTEMATIC REVIEW OF RANDOMIZED CLINICAL TRIALS
2020
Background: Extracorporeal Shock Wave Therapy (ESWT) has become a popular tool to treat musculoskeletal disorders and chronic low back pain. Aim of the study: To review the current scientific literature and assess the utility of ESWT in treating chronic low back pain. Methods: This systematic review was conducted from November 2019 to January 2020. Its purpose was to determine what the effectiveness is of the various forms of ESWT for the treatment of chronic low back pain. The critical review of the literature on the use of ESWT in chronic low back was made using the scientifically recognized medical databases PubMed, MEDLINE, Physiotherapy Evidence Database (PEDro) and Web of Science Core…
Changes of total annual runoff distribution, high and low discharges in Latvian rivers
2009
Changes of total annual runoff distribution, high and low discharges in Latvian rivers The paper examines climate change impacts on the hydrological regime of nineteen different river basins in Latvia. Hydrological data series for the period of 1951-2006 were analysed for river basins of four hydrological districts: Western, Central, Northern and Eastern. Climate change has influenced the temporal and spatial distribution of total annual river runoff and high and low flows in Latvia at the turn of century. The results confirm the hypothesis that the main tendency in the run-off change is a decrease in spring floods and increase in winter. Generally, statistically insignificant long-term tre…
Stationary, Second Use Battery Energy Storage Systems and Their Applications: A Research Review
2021
The global demand for electricity is rising due to the increased electrification of multiple sectors of economic activity and an increased focus on sustainable consumption. Simultaneously, the share of cleaner electricity generated by transient, renewable sources such as wind and solar energy is increasing. This has made additional buffer capacities for electrical grids necessary. Battery energy storage systems have been investigated as storage solutions due to their responsiveness, efficiency, and scalability. Storage systems based on the second use of discarded electric vehicle batteries have been identified as cost-efficient and sustainable alternatives to first use battery storage syste…
"Figure 4" of "Measurements of elliptic and triangular flow in high-multiplicity $^{3}$He$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV"
2023
Results for $v_2$ and $v_3$ as a function of $p_T$ for inclusive charged hadrons at midrapidity in 0-5% central $^3$He+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV.
Triangular flow of thermal photons from an event-by-event hydrodynamic model for 2.76A TeV Pb + Pb collisions at the CERN Large Hadron Collider
2016
We calculate the triangular flow parameter v3 of thermal photons from an event-by-event ideal hydrodynamic model for 0–40% central collisions of Pb nuclei at √sNN = 2.76 TeV at the CERN Large Hadron Collider. v3 determined with respect to the participant plane (PP) is found to be nonzero and positive, and its pT dependence is qualitatively similar to the elliptic flow parameter v2(PP) of thermal photons in the range 1 pT 6 GeV/c. In the range pT 3 GeV/c, v3(PP) is found to be about 50–75% of v2(PP) and for pT > 3 GeV/c the two anisotropy parameters become comparable. The value of v3 is driven by local density fluctuations both directly via the creation of triangular geometry and indirectly …