THE BUCHAREST STOC EXCHANGE IN THE CONTEXT OF ECONOMIC CRISYS

The economy is a complex, which acts on many external factors, but internal and complex factors, depending on who can create economic balances or imbalances. An important element is capital to be managed carefully and seriously because it caused imbalances are among the worst in the economy and may even lead to economic collapse in one country. The existence of capital market is driven by demand for capital for current cash needs and investment and also be subject to a real process of saving as the foundation of capital supply. Fundamental institution of secondary capital market is the stock of securities.Stoc Exchange, shares, crisys, market economy, capital, capital market, futures, options, investments, investment founds

Ab initio derivation of multi-orbital extended Hubbard model for molecular crystals

From configuration interaction (CI) ab initio calculations, we derive an effective two-orbital extended Hubbard model based on the gerade (g) and ungerade (u) molecular orbitals (MOs) of the charge-transfer molecular conductor (TTM-TTP)I_3 and the single-component molecular conductor [Au(tmdt)_2]. First, by focusing on the isolated molecule, we determine the parameters for the model Hamiltonian so as to reproduce the CI Hamiltonian matrix. Next, we extend the analysis to two neighboring molecule pairs in the crystal and we perform similar calculations to evaluate the inter-molecular interactions. From the resulting tight-binding parameters, we analyze the band structure to confirm that two bands overlap and mix in together, supporting the multi-band feature. Furthermore, using a fragment decomposition, we derive the effective model based on the fragment MOs and show that the staking TTM-TTP molecules can be described by the zig-zag two-leg ladder with the inter-molecular transfer integral being larger than the intra-fragment transfer integral within the molecule. The inter-site interactions between the fragments follow a Coulomb law, supporting the fragment decomposition strategy.Comment: 16 pages, 8 figures, published versio

INVESTMENTS IN BONDS ON ROMANIA’S CAPITAL MARKET

Capital market, both the primary and secondary record financial transactions not only through property titles, but also issues debt securities, designed to attract monetary funds in the form of loans or medium term. Bonds are securities, consisting of a long-term debt on a company giving the holder of Bonds (Bondholders) claim equal rights, corresponding nominal value of the bond. Bonds can be bought either in the public offering period, from banks or corporations Brokerage Financial Services Distributors, or from the stock through a brokerage firm by a procedure similar to that for action. Investing in bonds also entails risks, among which include the risk of default, interest rate risks and currency risks

A practical review on the measurement tools for cellular adhesion force

Cell cell and cell matrix adhesions are fundamental in all multicellular organisms. They play a key role in cellular growth, differentiation, pattern formation and migration. Cell-cell adhesion is substantial in the immune response, pathogen host interactions, and tumor development. The success of tissue engineering and stem cell implantations strongly depends on the fine control of live cell adhesion on the surface of natural or biomimetic scaffolds. Therefore, the quantitative and precise measurement of the adhesion strength of living cells is critical, not only in basic research but in modern technologies, too. Several techniques have been developed or are under development to quantify cell adhesion. All of them have their pros and cons, which has to be carefully considered before the experiments and interpretation of the recorded data. Current review provides a guide to choose the appropriate technique to answer a specific biological question or to complete a biomedical test by measuring cell adhesion

Prevalence of Peyronie's Disease-Like Symptoms in Men Presenting With Dupuytren Contractures.

IntroductionPeyronie's disease (PD) and Dupuytren contractures (DC) are often comorbid and are believed to have a similar underlying pathophysiologic mechanism.AimTo investigate the prevalence of PD-like symptoms (PDLS) in men with DC.MethodsFrom October 2013 to December 2016, men who were seen and evaluated for DC were offered the opportunity to participate in an anonymous survey. The survey assessed several basic demographic and sexual health factors and included items from the International Index of Erectile Function and the Erection Hardness Scale. Men who reported PDLS were asked a series of questions derived from the Peyronie's Disease Questionnaire and for their opinions on theoretical treatment modalities for sexual problems and penile deformity.Main outcome measurePrevalence of PDLS in men with DC.ResultsOne hundred forty men with DC were invited to participate; 85 surveys were returned (response rate = 61%). Twenty-two respondents (26%, 95% confidence interval = 17-35) reported PDLS. Approximately one fourth of all respondents had an Erection Hardness Scale score lower than 3. The most common specific PDLS concerns were penile curvature (91%), length loss (55%), narrowing (36%), and hinging (32%). In men with PDLS, 73% felt at least a little bothered by the symptoms when attempting sexual activity and 40% reported having sex less frequently because of the symptoms. Just 27% of men with PDLS had ever used a treatment for a sexual concern. In terms of treatments for penile deformities, 64% of men with PDLS expressed an interest in treatment administered in the form of an in-office procedure; 41% were potentially amenable to a surgical procedure.ConclusionThe prevalence of PDLS in men with DC is similar to the prevalence of DC in men diagnosed with PD. A substantial number of these men have distress and would consider standard-of-care treatments for PD. Shindel AW, Sweet G, Thieu W, et al. Prevalence of Peyronie's Disease-Like Symptoms in Men Presenting With Dupuytren Contractures. Sex Med 2017;5:e135-e141

Lunar Surface Systems Wet-Bath Design Evaluation

The goal of the current evaluation was to examine five different wet-bath architectural design concepts. The primary means of testing the concepts required participants to physically act-out a number of functional tasks (e.g., shaving, showering, changing clothes, maintenance) in order to give judgments on the affordance of the volume as based on the design concepts. Each of the concepts was designed in such a way that certain features were exploited - for example, a concept may have a large amount of internal stowage, but minimum amount of usable space to perform tasks. The results showed that the most preferred concept was one in which stowage and usable space were balanced. This concept allowed for a moderate amount of stowage with some suggested redesign, but would not preclude additional personal items such as clothing. This concept also allowed for a greater distance to be achieved between the toilet and the sink with minimum redesign, which was desirable. Therefore, the all-in-one (i.e., toilet, sink, and shower all occupying a single volume) wet-bath concept seemed to be a viable solution in which there is a minimal amount of overall volume available with certain lunar habitat configurations

THE MANAGEMENT OF A PORTFOLIO IN THE CONDITIONS OF ECONOMIC CRISIS

The need for money is one of the main financial goals of any company. Such needs have led to specific segments of demand and supply that demand for money and the money supply, in particular capital. Were created following specific markets: financial markets, with specialized division of labour in money markets and capital markets. Capital market is to supply and demand for medium and long term capital, with the same role as the financial market in general, having featured the long duration of maturity. From the viewpoint of the agents involved two types of markets that is the primary market, which are negotiated in the presence of primary and secondary securities issuer, that and his participation, and market secondary market investors, financial flows are directed to a investor to another. Institution typical secondary capital market is the stock market. Coverage of financial instruments, according to EU directives in force, is broad, including both tradable capital market instruments and money market instruments. Investment is defined in national accounts as gross fixed capital formation is the value of durable goods purchased by the production units to be used at least one year in production processes. The investment flow is therefore measured over a period, often a year, noted that the yield from an investment is proportional to the risk assumed. Investing in shares of the opportunity to diversify revenue and achieving consistent earnings, earnings from sales and purchases of shares may be significantly higher earnings from a bank

The Cepheid Phase Lag Revisited

We compute the phase lags between the radial velocity curves and the light curves $\Delta \Phi_1= \phi^{V_r}_1 - \phi^{mag}_1$ for classical Cepheid model sequences both in the linear and the nonlinear regimes. The nonlinear phase lags generally fall below the linear ones except for high period models where they lie above, and of course for low pulsation amplitudes where the two merge. The calculated phase lags show good agreement with the available observational data of normal amplitude Galactic Cepheids. The metallicity has but a moderate effect on the phase lag, while the mass-luminosity relation and the parameters of the turbulent convective model (time-dependent mixing length) mainly influence the modal selection and the period, which is then reflected in the period -- $\Delta \Phi_1$ diagram. We discuss the potential application of this observable as a discriminant for pulsation modes and as a test for ultra-low amplitudes (ULA) pulsation.Comment: 11 pages, 8 figures, accepted for publication in ApJ, minor revisions in the text and figures, (black and white version available from 2nd author's website