A Hierarchical Scheduling Model for Dynamic Soft-Realtime System

We present a new hierarchical approximation and scheduling approach for applications and tasks with multiple modes on a single processor. Our model allows for a temporal and spatial distribution of the feasibility problem for a variable set of tasks with non-deterministic and fluctuating costs at runtime. In case of overloads an optimal degradation strategy selects one of several application modes or even temporarily deactivates applications. Hence, transient and permanent bottlenecks can be overcome with an optimal system quality, which is dynamically decided. This paper gives the first comprehensive and complete overview of all aspects of our research, including a novel CBS concept to confine entire applications, an evaluation of our system by using a video-on-demand application, an outline for adding further resource dimension, and aspects of our protoype implementation based on RTSJ

Classificaton of the relict forest communites of Palla’s Black Pine (Pinus nigra subsp. pallasiana) in Bulgaria

New approach for the classifcation of the Black Pine forest communities in Bulgaria was made in the paper. Te analysis of forest pytocoenoses from Vlahina, East and West Rhodopi and Balkan Range Mountains confrmed their separation into two classes – Quercetea pubescentis (low-altitudinal) and Erico-Pinetea (high altitudinal). Te second class is represented from one polymorphic association Seslerio latifoliae-Pinetum nigrae whereas the other group is represented from two new associations. Te association Junipero deltoidi-Pineteum pallasianae is more related to the surrounding thermophilous oak forests as well as the association Lathyro laxiflori-Pinetum pallasianae is more similar to the hornbeam and beechforests

Mikrobna gorivna ćelija – hemijska i mikrobiološka karakterizacija sedimenta

Microbial fuel cells (MFCs) represent new potential energy sources through which electricity is generated, and among numerous advantages is that the emission of harmful gases is missing. MFC is a type of biological fuel cell, a system that converts chemical energy into electrical power by microorganisms. These systems can be constructed in many ways so that there are one-chamber, two-chamber and complex MFCs. MFCs are good alternative sources of energy offering possibility of application that can be found in the biosensor industry, hydrogen or electricity production systems and wastewater treatment plants. In this paper, characterization of the sediment used in a single chamber MFC is presented. The sediment used to form the microbial fuel cell is characterized by microbiological, chemical and analytical parameters.Mikrobne gorivne ćelije (Microbial fuel cell-MFC) predstavljaju nove potencijalne izvore energije, preko kojih se generiše električna energija, a među brojnim prednostima je i ta što izostaje emisija štetnih gasova. MFC su vrsta bioloških gorivnih ćelija, sistema koji konvertuju hemijsku energiju u električnu pomoću mikroorganizama. Postoji više načina konstrukcije i među njima se nalaze jednokomorne, dvokomorne i složene MFC. Takođe, mikroorganizmi i supstrati koji se koriste u MFC, koje ti mikroorganizmi obrađuju u hemijskim procesima, mogu da budu različitog porekla i da imaju različite karakteristike. MFC su dobri alternativni izvori energije koji svoju potencijalnu primenu nalaze u industriji biosenzora, sistemima za proizvodnju vodonika ili električne energije i postrojenjima za prečišćavanje otpadnih voda. U ovom radu dat je opis sedimenta korišćenog u sistemu jednokomorne MFC, okarakterisan pomoću mikrobioloških, hemijskih i analitičkih parametara.Related to: [http://cer.ihtm.bg.ac.rs/handle/123456789/3307

Mikrobna gorivna ćelija – hemijska i mikrobiološka karakterizacija sedimenta

Microbial fuel cells (MFCs) represent new potential energy sources through which electricity is generated, and among numerous advantages is that the emission of harmful gases is missing. MFC is a type of biological fuel cell, a system that converts chemical energy into electrical power by microorganisms. These systems can be constructed in many ways so that there are one-chamber, two-chamber and complex MFCs. MFCs are good alternative sources of energy offering possibility of application that can be found in the biosensor industry, hydrogen or electricity production systems and wastewater treatment plants. In this paper, characterization of the sediment used in a single chamber MFC is presented. The sediment used to form the microbial fuel cell is characterized by microbiological, chemical and analytical parameters.Mikrobne gorivne ćelije (Microbial fuel cell-MFC) predstavljaju nove potencijalne izvore energije, preko kojih se generiše električna energija, a među brojnim prednostima je i ta što izostaje emisija štetnih gasova. MFC su vrsta bioloških gorivnih ćelija, sistema koji konvertuju hemijsku energiju u električnu pomoću mikroorganizama. Postoji više načina konstrukcije i među njima se nalaze jednokomorne, dvokomorne i složene MFC. Takođe, mikroorganizmi i supstrati koji se koriste u MFC, koje ti mikroorganizmi obrađuju u hemijskim procesima, mogu da budu različitog porekla i da imaju različite karakteristike. MFC su dobri alternativni izvori energije koji svoju potencijalnu primenu nalaze u industriji biosenzora, sistemima za proizvodnju vodonika ili električne energije i postrojenjima za prečišćavanje otpadnih voda. U ovom radu dat je opis sedimenta korišćenog u sistemu jednokomorne MFC, okarakterisan pomoću mikrobioloških, hemijskih i analitičkih parametara.Related to: [https://cherry.chem.bg.ac.rs/handle/123456789/5242

Mikrobna gorivna ćelija – hemijska i mikrobiološka karakterizacija sedimenta

Microbial fuel cells (MFCs) represent new potential energy sources through which electricity is generated, and among numerous advantages is that the emission of harmful gases is missing. MFC is a type of biological fuel cell, a system that converts chemical energy into electrical power by microorganisms. These systems can be constructed in many ways so that there are one-chamber, two-chamber and complex MFCs. MFCs are good alternative sources of energy offering possibility of application that can be found in the biosensor industry, hydrogen or electricity production systems and wastewater treatment plants. In this paper, characterization of the sediment used in a single chamber MFC is presented. The sediment used to form the microbial fuel cell is characterized by microbiological, chemical and analytical parameters.Mikrobne gorivne ćelije (Microbial fuel cell-MFC) predstavljaju nove potencijalne izvore energije, preko kojih se generiše električna energija, a među brojnim prednostima je i ta što izostaje emisija štetnih gasova. MFC su vrsta bioloških gorivnih ćelija, sistema koji konvertuju hemijsku energiju u električnu pomoću mikroorganizama. Postoji više načina konstrukcije i među njima se nalaze jednokomorne, dvokomorne i složene MFC. Takođe, mikroorganizmi i supstrati koji se koriste u MFC, koje ti mikroorganizmi obrađuju u hemijskim procesima, mogu da budu različitog porekla i da imaju različite karakteristike. MFC su dobri alternativni izvori energije koji svoju potencijalnu primenu nalaze u industriji biosenzora, sistemima za proizvodnju vodonika ili električne energije i postrojenjima za prečišćavanje otpadnih voda. U ovom radu dat je opis sedimenta korišćenog u sistemu jednokomorne MFC, okarakterisan pomoću mikrobioloških, hemijskih i analitičkih parametara.Related to: [http://cer.ihtm.bg.ac.rs/handle/123456789/3307

Mikrobna gorivna ćelija – hemijska i mikrobiološka karakterizacija sedimenta

Microbial fuel cells (MFCs) represent new potential energy sources through which electricity is generated, and among numerous advantages is that the emission of harmful gases is missing. MFC is a type of biological fuel cell, a system that converts chemical energy into electrical power by microorganisms. These systems can be constructed in many ways so that there are one-chamber, two-chamber and complex MFCs. MFCs are good alternative sources of energy offering possibility of application that can be found in the biosensor industry, hydrogen or electricity production systems and wastewater treatment plants. In this paper, characterization of the sediment used in a single chamber MFC is presented. The sediment used to form the microbial fuel cell is characterized by microbiological, chemical and analytical parameters.Mikrobne gorivne ćelije (Microbial fuel cell-MFC) predstavljaju nove potencijalne izvore energije, preko kojih se generiše električna energija, a među brojnim prednostima je i ta što izostaje emisija štetnih gasova. MFC su vrsta bioloških gorivnih ćelija, sistema koji konvertuju hemijsku energiju u električnu pomoću mikroorganizama. Postoji više načina konstrukcije i među njima se nalaze jednokomorne, dvokomorne i složene MFC. Takođe, mikroorganizmi i supstrati koji se koriste u MFC, koje ti mikroorganizmi obrađuju u hemijskim procesima, mogu da budu različitog porekla i da imaju različite karakteristike. MFC su dobri alternativni izvori energije koji svoju potencijalnu primenu nalaze u industriji biosenzora, sistemima za proizvodnju vodonika ili električne energije i postrojenjima za prečišćavanje otpadnih voda. U ovom radu dat je opis sedimenta korišćenog u sistemu jednokomorne MFC, okarakterisan pomoću mikrobioloških, hemijskih i analitičkih parametara.Related to: [http://cer.ihtm.bg.ac.rs/handle/123456789/3298

Tuning the Excited-State Dynamics of GFP-Inspired Imidazolone Derivatives

The excited-state dynamics of five derivatives of the GFP-chromophore, which differ by the position and nature of their substituents, has been investigated in solvents of various viscosity and polarity and in rigid media using femtosecond-resolved spectroscopy. In polar solvents of low viscosity, like acetonitrile or methanol, the fluorescence decays of all compounds are multiexponential, with average lifetimes of the order of a few picoseconds, whereas in rigid matrices (polymer films and low temperature glasses), they are single exponential with lifetimes of the order of a few nanoseconds and fluorescence quantum yields close to unity. Global analysis of the fluorescence decays recorded at several wavelengths and of the transient absorption spectra reveals the presence of several excited-state populations with slightly different fluorescence and absorption spectra and with distinct lifetimes. These populations are attributed to the existence of multiple ground-state conformers. From the analysis of the dependence of the excited-state dynamics on the solvent and on the nature of the substituents, it follows that the nonradiative deactivation of all these excited chromophores involves an intramolecular coordinate with large amplitude motion. However, depending on the solvent and substituent, additional channels, namely, inter- and intramolecular hydrogen bond assisted nonradiative deactivation, are operative. This allows tuning of the excited-state lifetime of the chromophore. Finally, an ultrafast photoinduced intramolecular charge transfer is observed in polar solvents with one derivative bearing a dimethylaminophenyl substituent

The Significance of MGMT Promoter Methylation Status in Diffuse Glioma

A single-institution observational study with 43 newly diagnosed diffuse gliomas defined the isocitrate dehydrogenase 1 and 2 (IDH1/2) gene mutation status and evaluated the prognostic relevance of the methylation status of the epigenetic marker O6-methylguanine-DNA methyltransferase (MGMT). Younger patients (50 years with surgical resection and IDH1/2-wildtype diffuse glioma), distinguished 10 (41.6%) methylated samples from 14 (58.4%) unmethylated samples. Finally, significant correlation between OS and methylation status was noticed (p ≈ 0.05). The OS of the hypermethylated group was 9.6 ± 1.77 months, whereas the OS of the unmethylated group was 5.43 ± 1.04 months. Our study recognized the MGMT promoter methylation status as a positive prognostic factor within the described homogenous cohort, although further verification in a larger population of diffuse gliomas is required