Efficient spin control in high-quality-factor planar micro-cavities

A semiconductor microcavity embedding donor impurities and excited by a laser field is modelled. By including general decay and dephasing processes, and in particular cavity photon leakage, detailed simulations show that control over the spin dynamics is significally enhanced in high-quality-factor cavities, in which case picosecond laser pulses may produce spin-flip with high-fidelity final states.Comment: 6 pages, 4 figure

Photoproduction off the nucleon revisited: Evidence for a narrow N(1688) resonance?

Revised analysis of $\Sigma$ beam asymmetry for the $\eta$ photoproduction on the free proton reveals a structure at $W\sim 1.69$ GeV. Fit of the experimental data based on the E429 solution of the SAID partial wave analysis suggests a narrow ($\Gamma \leq 25$ MeV) resonance. Possible candidates are $P_{11}, P_{13}$, or $D_{13}$ resonances. The result is considered in conjunction with the recent evidence for a bump-like structure at $W\sim 1.67 - 1.68$ GeV in the quasi-free $\eta$ photoproduction on the neutron.Comment: Contribution to the Workshop on the Physics of the Excited Nucleons NSTAR2007, Bonn, Germany, Sept. 5 - 8 2007. To be published in Eur.Phys.J.

FEATURES OF USING UNMANNED AERIAL VEHICLE FOR INCREASING POSSIBILITY OF UNIT'S COMBAT CAPABILITIES

This article deals with topical issues of increasing capabilities, Upgrading combat capabilities, forces and intelligence equipment through the introduction of unmanned aerial vehicles. Examples of tactically and technically effective models of unmanned aerial vehicles, their advantages and calculations to increase the probability of detecting an enemy object are given.   Bibliography Entry Akshlakov, K., G. Baiseitov, A. Boiko, and A. Temirbekuly. 2020. "Features of Using Unmanned Aerial Vehicle for Increasing Possibility of Unit's Combat Capabilities." Margalla Papers 24 (2): 133-138

ON THE ISSUE OF THE USE OF UNMANNED AERIAL VEHICLES FOR MILITARY PURPOSES

The actual questions of capacity improvement, modernization of operating capability, resources of the intelligence service by introducing remotely piloted aircrafts are considered in this article. The examples of tactic-technical specifications of the models of remotely piloted aircrafts, their advantages as well as the estimation of increased possibilities of the enemy’s facilities detection are provided.   Bibliography Entry Akshlakov, K., G. Baiseitov, A. Boiko, and A. Temirbekuly. 2020. "On the Issue of the Use of Unmanned Aerial Vehicles for Military Purposes." Margalla Papers 24 (2): 129-132

КРАУДФАНДИНГОВІ ТЕХНОЛОГІЇ У РОЗВИТКУ НАЦІОНАЛЬНОЇ ТУРИСТИЧНОЇ СИСТЕМИ

The article substantiates the sense of crowdfunding and determines a list of participants of crowdfunding projects. The author has proposed a scheme for implementation of a crowdfunding tourism project, indicating the main stakeholders. The author has substantiated directions of implementation of projects, using crowdfunding in the national tourism system. The author has suggested a “house” of crowdfunding for projects of the national tourism system. The article determines advantages and disadvantages of crowdfunding for the main stakeholders and the society.    В статье обоснована сущность краудфандинга и краудфандинговых технологий, определен круг их участников. Предложено процесс реализации краудфандинга туристического проекта с указанием основных стейкхолдеров. Обоснованы направления реализации проектов с помощью краудфандинга в туристической системе. Предложено «архитектонику» краудфандинга проектов национальной туристической системы. Определены преимущества и недостатки краудфандинга для основных стейкхолдеров и общества.У статті обґрунтовано сутність краудфандингу та краудфандингових технологій, визначено коло їх учасників. Запропоновано процес реалізації краудфандингу туристичного проекту із зазначенням основних стейкхолдерів. Обгрунтовані напрямами реалізації проектів за допомогою краудфандингу в туристичній системі. Запропоновано «архітектоніку» краудфандингу проектів національної туристичної системи. Визначено переваги та недоліки краудфандингу для основних стейкхолдерів та суспільства

Transitions/relaxations in polyester adhesive/PET system

The correlations between the transitions and the dielectric relaxation processes of the oriented poly(ethylene terephthalate) (PET) pre-impregnated of the polyester thermoplastic adhesive have been investigated by differential scanning calorimetry (DSC) and dynamic dielectric spectroscopy (DDS). The thermoplastic polyester adhesive and the oriented PET films have been studied as reference samples. This study evidences that the adhesive chain segments is responsible for the physical structure evolution in the PET-oriented film. The transitions and dielectric relaxation modes’ evolutions in the glass transition region appear characteristic of the interphase between adhesive and PET film, which is discussed in terms of molecular mobility. The storage at room temperature of the adhesive tape involves the heterogeneity of the physical structure, characterized by glass transition dissociation. Thus, the correlation between the transitions and the dielectric relaxation processes evidences a segregation of the amorphous phases. Therefore, the physical structure and the properties of the material have been linked to the chemical characteristics