An Event-Driven Multiple Objects Surveillance System

Traditional surveillance systems are constrained because of a fixed and preset pattern of monitoring. It can reduce the reliability of the system and cause an increased generation of false alarms. It results in an increased processing activity of the system, which causes an augmented consumption of system resources and power. Within this framework, a human surveillance system is proposed based on the event-driven awakening and self-organization principle. The proposed system overcomes these downsides up to a certain level. It is achieved by intelligently merging an assembly of sensors with two cameras, actuators, a lighting module and cost-effective embedded processors. With the exception of low-power event detectors, all other system modules remain in the sleep mode. These modules are activated only upon detection of an event and as a function of the sensing environment condition. It reduces power consumption and processing activity of the proposed system. An effective combination of a sensor assembly and a robust classifier suppresses generation of false alarms and improves system reliability. An experimental setup is realized in order to verify the functionality of the proposed system. Results confirm proper functionality of the implemented system. A 62.3-fold system memory utilization and bandwidth consumption reduction compared to traditional counterparts is achieved, i.e. a result of the proposed system self-organization and event-driven awakening features. It confirms that the proposed system outperforms its classical counterparts in terms of processing activity, power consumption and usage of resources

One Pot Synthesis of Indole derivatives Catalyzed by SBA-15-Pr-SO3H as a Nanoporous Acid

An effective one-pot synthesis of indole derivatives using functionalized SBA-15 as Brønsted acid. It efficiently catalyzed synthesis of indole derivatives through the Fischer Indole reaction. One pot synthesis procedure, mild reaction conditions, and simple workup are attractive features of this method. Introduction: Due to indole structure ubiquity in nature and its broad application in chemistry, indole derivatives are valuable heterocycles. Numerous methods have been developed for the synthesis of indole derivatives and more efficient straightforward synthetic strategies still continue to be pursued. Fischer Indole method is one of the most powerful routes of indole synthesis. In view of the versatility of indoles and its derivatives in material sciences, There is an increasing sensitivity for environmental protection and using green methodologies for effecting the Fischer indole synthesis. We were interested in developing a new, easy workup procedure with high yielding synthetic protocol for indole derivatives using modified SBA-15 with HO3S- functional group as a recyclable and environmentally benign catalyst. Methods and Results: To develop Indole scaffold we considered a reaction of phenylhydrazine or its nitro derivatives, a ketone (typically, cyclohexanone), and SBA-15-Pr-SO3H as Brønsted acid. The present methodology also offers the advantages of excellent yields, short reaction time, and milder reaction conditions.  All the synthesized compounds were characterized by 1H NMR, IR spectral data. Conclusions: The target compounds were obtained from phenylhydrazines and ketones with good to excellent yields

Modeling and Simulation of NFC Logical Layer Peer-to-Peer Mode using CPN and TA

Network communication technologies have been growing explosively due to the increasing demand on faster and simpler communication; hence, providing new communication technologies is a challenging task. To make this task easy, many researchers have developed different network modeling and simulation tools with different characteristics. In this paper, simulation of Near Field Communication (NFC) logical layer control protocol is proposed to investigate efficiency of NFC device in peer-to-peer mode. For this purpose, Colored Petri Net (CPN) and Timed Automata (TA) have been used for analyses. According to the results, CPN was better than TA for simulating NFC logical layer control protocol because it could provide more details on complex communication network.DOI:http://dx.doi.org/10.11591/ijece.v4i2.515

The Assessment of Health-Promoting Lifestyle Status and Its Determinants among Students of Iran University of Medical Sciences

Careful assessment of lifestyle status among students is a necessity for identifying lifestyle problems and, it is an essential prerequisite for more efficient planning and implementing health promotion interventions among them. This study performed to estimate the current status of a health-promoting lifestyle among students of Iran University of Medical Sciences. This cross-sectional study was performed on 250 students of Iran University of Medical Sciences. By performing a proportional stratified random sampling method according to the number of students in each academic discipline, samples were chosen. The data gathering tool was a two-part questionnaire. The first part was related to demographic and socioeconomic information. The second part consisted of the Health-Promoting Lifestyle Profile (HPLP-II) questionnaire. The data were analyzed using SPSS version 23 through descriptive and inferential statistics. The results were statistically observed as significant at p < 0.05. The mean score of health-promoting lifestyle was 124.36 ± 18.41. The highest mean score was for the nutrition dimension (23.67±4.91) and the lowest was for the physical activity dimension (15.08±5.16). This research showed that a statistical proper correlation was found between marital status and spiritual growth. Also, there was a relationship between academic discipline and health responsibility. Additionally, another statistical significant relationship between financial status and health-promoting lifestyle, health responsibility, spiritual growth, and stress management was observed. Since the status of a health-promoting lifestyle is not satisfactory, a wide range of planning and implementing health interventions are needed to improve the health-promoting lifestyle among the students

Vrednovanje međusobnog djelovanja oksidant-antioksidant u krvi golubova prirodno zaraženih vrstom Haemoproteus columbae.

Haemoproteus columbae is a haemosporidian parasite that infects pigeons throughout the world. The present study was designed to elucidate more aspects of the antioxidant defense of the body against haemoparasite infections in pigeons. A total of 46 indigenous pigeons naturally infected with H. columbae were selected and subdivided into three subgroups based on their parasitemia rates (<1 %, 1-3 %, 3-5 %). 24 non-infected birds were also used as controls. Blood samples from both groups were taken, and haematological parameters were measured. Although our data demonstrated significant decreases in the red blood cell count (RBC), packed cell volume (PCV) and haemoglobin values of the infected animals (P<0.05), no remarkable changes were observed in the activities of antioxidant enzymes (including superoxide dismutase (SOD), glutathione peroxidase (GPX) and catalase), the level of malondiadehyde (MDA) as an index of lipid peroxidation, serum levels of lipids (cholesterol, triglyceride, HDL and LDL) and serum concentrations of antioxidant trace elements (copper, iron, zinc, manganese and selenium) and vitamins (A, E and C) in infected groups compared to controls. These findings show that anaemia may occur as a result of the infection with H. columbae in pigeons. In addition, the unchanged levels of different antioxidant agents, lipid peroxidation index (MDA) and the main lipid components of serum during the infection, may implicitly suggest that the parasite probably cannot induce significant effects on the antioxidant mechanisms protecting erythrocytes against oxidative agents. Also, oxidative shock may not play a significant role in the pathogenesis of the parasite in pigeons infected with H. columbae. Further studies to clarify the exact mechanism(s) of anaemia in this haemoparasitic infection need to be carried out.Haemoproteus columbae jest hemosporidij koji napada golubove diljem svijeta. Ovo istraživanje poduzeto je u namjeri da se s više gledišta rasvijetli antioksidacijska obrana organizma od hemoparazitskih infekcija u golubova. Ukupno je bilo odabrano 46 autohtonih golubova prirodno invadiranih vrstom H. columbae te podijeljeno u tri podskupine na osnovi stupnja njihove parazitemije (<1%, 1-3%, 3-5%). Kao kontrola poslužile su 24 neinficirane ptice. Uzeti su uzorci krvi od obiju skupina te su određeni hematološki pokazatelji. Iako su rezultati pokazali značajno smanjenje broja crvenih krvnih stanica, vrijednosti hematokrita i hemoglobina u invadiranih životinja (P<0,05), nisu ipak zapažene značajne promjene u aktivnostima antioksidacijskih enzima (uključujući superperoksidnu dismutazu, glutationsku peroksidazu i katalazu), razine malondialdehida (MDA) kao pokazatelja lipidne peroksidacije, razine lipida u serumu (kolesterola, triglicerida, HDL i LDL) i serumskih koncentracija antioksidacijskih elemenata u tragovima (bakra, željeza, cinka, mangana i selena) te vitamina (A, E i C) u uzorcima seruma invadiranih skupina u odnosu na kontrolnu skupinu. Ti nalazi pokazuju da se anemija može javiti kao rezultat invazije vrstom H. columbae u golubova. Povrh toga, nepromijenjene razine različitih antioksidacijskih tvari, indeks lipidne peroksidacije i sadržaj glavnih lipida u serumu tijekom invazije može značiti da parazit vjerojatno ne može potaknuti značajne učinke na antioksidacijske mehanizme koji bi zaštitili eritrocite od oksidacijskih tvari. Također, oksidacijski šok nema značajnu ulogu u patogenezi invazije vrstom H. columbae u golubova. Potrebna su daljnja istraživanja za točno rasvjetljavanje mehanizama nastanka anemije kod hemoparazitskih invazija

WARFARIN USE AND THE RISKS OF STROKE AND BLEEDING IN HEMODIALYSIS PATIENTS WITH ATRIAL FIBRILLATION: A META-ANALYSIS STUDY

Background: risk and benefits of warfarin therapy in hemodialysis (HD) patients with fibrillation (AF) remains controversial. The aim of meta-analysis to evaluate risks of stroke and bleeding of warfarin treatment in these populations. Methods and results: Relevant literatures were searched using the following electronic databases without any language restrictions: the Cochrane Library Database, PubMed, ISI, Ovid, and Chinese Biomedical Database from the building of the database to 2018. The studies were included if (a) studies described the risk of stroke or bleeding with or without warfarin in dialysis patients with AF, (b) studies provided information about hazard ratio (HR) and 95% confidence interval (CI) of stroke or bleeding, and (c) the study design should be a clinical cohort. Sensitivity analyses and publication bias were also performed. We identified 6 eligible studies with a total of 9816 patients. Combined HRs showed that warfarin cannot provide a prevention for strokes in HD patients with AF [HR = 1.23, 95% CI 0.80 - 1.87; P = 0.347], but associated with a higher risk of bleeding (HR = 1.20, 95% CI 1.03 - 1.39; P = 0.019). Conclusion: This meta-analysis suggested that warfarin should not be recommended for the routine treatment of HD patients with AF. Keywords: Hemodialysis, Atrial fibrillation, Warfarin, Stroke, Bleeding

Compact Binary Merger Rate in Dark-Matter Spikes

Nowadays, the existence of supermassive black holes (SMBHs) in the center of galactic halos is almost confirmed. An extremely dense region referred to as dark-matter spike is expected to form around central SMBHs as they grow and evolve adiabatically. In this work, we calculate the merger rate of compact binaries in dark-matter spikes while considering halo models with spherical and ellipsoidal collapses. Our findings exhibit that ellipsoidal-collapse dark matter halo models can potentially yield the enhancement of the merger rate of compact binaries. Finally, our results confirm that the merger rate of primordial black hole binaries is consistent with the results estimated by the LIGO-Virgo detectors, while such results can not be realized for primordial black hole-neutron star binaries.Comment: 13 pages; 5 figures; references added, typos were fixe