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Power-aware processors for wireless sensor networks

Küçük, G. | Başaran, C.

Conference Object | 2006 | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)4263 LNCS , pp.655 - 664

Today, wireless sensor networks (WSNs) enable us to run a new range of applications from habitat monitoring, to military and medical applications. A typical WSN node is composed of several sensors, a radio communication interface, a microprocessor, and a limited power supply. In many WSN applications, such as forest fire monitoring or intruder detection, user intervention and battery replenishment is not possible. Since the battery lifetime is directly related to the amount of processing and communication involved in these nodes, optimal resource usage becomes a major issue. A typical WSN application may sense and process very close . . . or constant data values for long durations, when the environmental conditions are stable. This is a common behavior that can be exploited to reduce the power consumption of WSN nodes. This study combines two orthogonal techniques to reduce the energy dissipation of the processor component of the sensor nodes. First, we briefly discuss silent-store filtering MoteCache. Second, we utilize Content-Aware Data MAnagement (CADMA) on top of MoteCache architecture to achieve further energy savings and performance improvements. The complexity increase introduced by CADMA is also compensated by further complexity reduction in MoteCache. Our optimal configuration reduces the total node energy, and hence increases the node lifetime, by 19.4% on the average across a wide variety of simulated sensor benchmarks. Our complexity-aware configuration with a minimum MoteCache size achieves not only energy savings up to 16.2% but also performance improvements up to 4.3%, on the average. © Springer-Verlag Berlin Heidelberg 2006 Daha fazlası Daha az

The combined use of pumpless extracorporeal lung assist and continuous arteriovenous hemofiltration with citrate anticoagulation in polytrauma patients

Atalan, H.K. | Gucyetmez, B. | Dumantepe, M. | Berktas, M. | Denizalti, T.B. | Tarhan, İ.A. | Ozler, A.

Letter | 2015 | Intensive Care Medicine41 ( 11 ) , pp.2024 - 2025

[No abstract available]

Development of a mobile news reader application compatible with in-vehicle infotainment

Kurt, B. | Gören, S.

Conference Object | 2018 | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)10995 LNCS , pp.18 - 29

People spend a lot of time behind the wheel every day. Reading newspapers while driving a car is almost impossible. In this work, a mobile news reader application is developed to deliver the latest news from various sources to the drivers. The major difference from other news reader applications is that it is developed in accordance with the Ford SYNC technology. The user will be able to view the latest news on the SYNC screen while driving and listening to the selected news. In addition, drivers can select the desired news source and the desired news with the voice commands. Therefore, our proposed news reader application is an ena . . .bler for the drivers to follow the news in a safe way without distraction while keeping their hands on the wheel and their eyes on the road. © Springer International Publishing AG, part of Springer Nature 2018 Daha fazlası Daha az

The effect of N G -nitro L-arginine methyl ester on colonic anastomosis after increased intra-abdominal pressure

C. Polat | Y. Arıkan | C. Gokce | F. Aktepe | G. Akbulut | S. Yilmaz | O. Gokce

Article | 2007 | Langenbeck's Archives of Surgery392 ( 2 ) , pp.197 - 202

Background: Intestinal ischemia-reperfusion (I/R) is associated with augmented nitric oxide (NO) production. Increased intra-abdominal pressure (IAP) during surgical pneumoperitoneum (P) facilitates I/R injury. We previously demonstrated decreased strength and healing of colocolic anastomoses after high IAPs. The effect of an NO synthase inhibitor, N G -nitro-arginine methyl ester (l-NAME), on anastomoses realized in colonic tissue exposed to high IAPs was investigated in this study, a randomized, controlled, and experimental study with blind outcome assessment. Method: Fifty Wistar-albino rats were randomized to five groups; all un . . .derwent colocolic anastomosis. P was maintained for 60 min at IAPs of 14, 20, 25, and 30 mmHg in study groups 1, 2, 3, and 4, respectively; P was preceded by intraperitoneal l-NAME (2.5 mg/kg) and followed by anastomosis. The control group was not subjected to IAP or l-NAME. Results: Anastomosis bursting pressure (ABP) values and histopathological findings were determined on the 7th-14th postoperative days. The ABPs of groups 3-4 were significantly lower than the others. Groups 1-2 had results similar to controls. Histopathological findings of the groups were consistent with their ABPs. Conclusion: Administration of a 2.5-mg/kg intraperitoneal l-NAME dose was found to provide a beneficial role, implying a role in impaired anastomotic healing after IAPs of 14 and 20 mmHg. © 2006 Springer-Verlag Daha fazlası Daha az

Effect of plant growth-promoting bacteria and soil compaction on barley seedling growth, nutrient uptake, soil properties and rhizosphere microflora

Canbolat, M.Y. | Bilen, S. | Çakmakçı, R. | Şahin, Fikrettin | Aydın, A.

Article | 2006 | Biology and Fertility of Soils42 ( 4 ) , pp.350 - 357

Inoculants are of great importance in sustainable and/or organic agriculture. In the present study, plant growth of barley (Hordeum vulgare) has been studied in sterile soil inoculated with four plant growth-promoting bacteria and mineral fertilizers at three different soil bulk densities and in three harvests of plants. Three bacterial species were isolated from the rhizosphere of barley and wheat. These bacteria fixed N 2 , dissolved P and significantly increased growth of barley seedlings. Available phosphate in soil was significantly increased by seed inoculation of Bacillus M-13 and Bacillus RC01. Total culturable bacteria, fun . . .gi and P-solubilizing bacteria count increased with time. Data suggest that seed inoculation of barley with Bacillus RC01, Bacillus RC02, Bacillus RC03 and Bacillus M-13 increased root weight by 16.7, 12.5, 8.9 and 12.5% as compared to the control (without bacteria inoculation and mineral fertilizers) and shoot weight by 34.7, 34.7, 28.6 and 32.7%, respectively. Bacterial inoculation gave increases of 20.3-25.7% over the control as compared with 18.9 and 35.1% total biomass weight increases by P and NP application. The concentration of N and P in soil was decreased by increasing soil compaction. In contrast to macronutrients, the concentration of Fe, Cu and Mn was lower in plants grown in the loosest soil. Soil compaction induced a limitation in root and shoot growth that was reflected by a decrease in the microbial population and activity. Our results show that bacterial population was stimulated by the decrease in soil bulk density. The results suggest that the N 2 -fixing and P-solubilizing bacterial strains tested have a potential on plant growth activity of barley. © Springer-Verlag 2005 Daha fazlası Daha az

Duco - Hybrid indoor navigation

Surmeli, C. | Serif, T.

Conference Object | 2016 | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)9847 LNCS , pp.256 - 267

This paper proposes an application especially designed for indoor navigation, Duco. A hybrid approach at trying to find a solution to the problem of indoor navigation by mainly utilising pedestrian deadreckoning (PDR) along with the aid of iOS wireless location determination systems to aid the process. Using merely the digital accelerometer and compass sensors of modern smartphones, PDR can reflect location changes in real-time with high-precision while retaining battery life at maximum. An algorithm is utilised to analyse the data from these noisy sensors to enable high success rate of detecting step count. Duco also makes use of w . . .ireless location determination systems to retrieve the initial location where PDR falls short or iBeacons to get around problematic places inside an indoor venue like stairs, elevators or signal dead-zones. © Springer International Publishing Switzerland 2016 Daha fazlası Daha az

Prevalence of dental erosion in Greek minority school children in Istanbul

Çaglar, E. | Sandalli, N. | Panagiotou, N. | Tonguc, K. | Kuscu, O.O.

Article | 2011 | European Archives of Paediatric Dentistry12 ( 5 ) , pp.267 - 271

Aim: To evaluate the prevalence and aetiology of dental erosion in Greek minority school children living in Istanbul (Turkey). Methods: The present study was initiated in four Greek minority elementary schools in Istanbul where a total of 83 children (46 girls, 37 boys) between ages 7-14 years old were examined. Children were categorised into 7-11 and 12-14 ages groups. Data were obtained by clinical examination, questionnaire and standard data records. All tooth surfaces were examined, dental erosion was recorded per tooth and classified according to the index of Lussi et al. [1996] Results: In the 7-11 yrs old group, 47.4% (n:18) . . .of the children exhibited dental erosion while in 12-14 yrs old group, 52.6% (n:20) of the children exhibited dental erosion. There were no statitistical differences between age, gender groups and findings of dental erosion (p>0.05). However prevalence of dental erosion in 12-14 yrs old was twice that of the 7-11 years old children. In general, an unusual drinking pattern of slow swallowing of beverages significantly affected the prevalence of dental erosion (p=0.03). Conclusion: Multiple regression analysis revealed no relationship between dental erosion and related erosive sources such as medical conditions, brushing habits, swimming, and the consumption of acidic fruit juices and beverages (p>0.05). However it should be noted that the sample size in the current study was small Daha fazlası Daha az

Medication use in older patients and age-blind approach: narrative literature review (insufficient evidence on the efficacy and safety of drugs in older age, frequent use of PIMs and polypharmacy, and underuse of highly beneficial nonpharmacological strategies)

Fialová, D. | Laffon, B. | Marinkovic, V. | Tasic, L. | Doro, P. | S?os, G.O. | for the EUROAGEISM H2020 project and WG1b group ?Healthy clinical strategies for healthy aging? of the EU COST Action IS, 1402

Review | 2019 | European Journal of Clinical Pharmacology75 ( 4 ) , pp.451 - 466

Introduction: The importance of rational drug therapy is increasing with the aging of the population. Since one of the main reasons for inappropriate drug prescribing is also the “age-blind” approach, which results in ageist practices, this narrative literature review focuses on the description of the main barriers related to insufficient individualization of drug regimens associated with such age-blind approaches. Methodology: A narrative literature review using the PubMed, WoS, Embase, and Scopus databases was conducted by the EU COST Action IS1402. Experts in different scientific fields from six countries (the Czech Republic, Spa . . .in, Portugal, Hungary, Serbia, and Turkey) worked in four specific areas: (1) underrepresentation of older adults in clinical trials and clinical and ethical consequences; (2) insufficient consideration of age-related changes and geriatric frailty in the evaluation of the therapeutic value of drugs; (3) frequent prescribing of potentially inappropriate medications (PIMs); and (4) frequent underuse of highly beneficial nonpharmacological strategies (e.g., exercise). Results: Older patients are underrepresented in clinical trials. Therefore, rigorous observational geriatric research is needed in order to obtain evidence on the real efficacy and safety of frequently used drugs, and e.g. developed geriatric scales and frailty indexes for claims databases should help to stimulate such research. The use of PIMs, unfortunately, is still highly prevalent in Europe: 22.6% in community-dwelling older patients and 49.0% in institutionalized older adults. Specific tests to detect the majority of age-related pharmacological changes are usually not available in everyday clinical practice, which limits the estimation of drug risks and possibilities to individualize drug therapy in geriatric patients before drug prescription. Moreover, the role of some nonpharmacological strategies is highly underestimated in older adults in contrast to frequent use of polypharmacy. Among nonpharmacological strategies, particularly physical exercise was highly effective in reducing functional decline, frailty, and the risk of falls in the majority of clinical studies. Conclusion: Several regulatory and clinical barriers contribute to insufficient knowledge on the therapeutic value of drugs in older patients, age-blind approach, and inappropriate prescribing. New clinical and observational research is needed, including data on comprehensive geriatric assessment and frailty, to document the real efficacy and safety of frequently used medications. © 2019, The Author(s) Daha fazlası Daha az

Fragmentation without extraction in ureteral stones: Outcomes of 238 cases

Göktaş, C. | Horuz, R. | Akça, O. | Çetinel, A.C. | Albayrak, S. | Sarıca, K.

Article | 2012 | Urological Research40 ( 4 ) , pp.383 - 387

We aimed to evaluate the success rates, auxiliary procedures and complications after ureteroscopic lithotripsy (URS) during which the fragments left in situ for spontaneous passage after complete disintegration into a acceptable (

Instruction scheduling in microprocessors

Küçük, G. | Güney, I. | Ponomarev, D.

Article | 2013 | Studies in Computational Intelligence505 , pp.39 - 60

The Central Processing Unit (CPU) in a microprocessor is responsible for running machine instructions as fast as possible so that the machine performance is at its maximum level. While simple in design, in-order execution processors provide sub-optimal performance, because any delay in instruction processing blocks the entire instruction stream. To overcome this limitation, modern highperformance designs use out-of-order (OoO) instruction scheduling to better exploit available Instruction-Level Parallelism (ILP), and both static (compilerassisted) and dynamic (hardware-assisted) scheduling solutions are possible. The hardware-assist . . .ed scheduling integrates an OoO core that requires a complex dynamic instruction scheduler and additional datapath structures are utilized to hold the in-flight instructions in program order to support the reconstruction of precise program state. The logic becomes even more complex when superscalar (those capable of executing multiple instructions every clock cycle) designs are used. This chapter gives a brief introduction to instruction scheduling on pipelined superscalar architectures, and, then, explains some of the keystone static and dynamic instruction scheduling algorithms. © 2013 Springer-Verlag Berlin Heidelberg Daha fazlası Daha az

Optical studies of semiconductor Quantum Dots

Yükselici, H. | Allahverdi, C. | Aşikoglu, A. | Ünlü, H. | Baysal, A. | Çulha, Mustafa | Athalin, H.

Article | 2013 | NanoScience and Technology77 , pp.101 - 117

Optical absorption (ABS), steady-state photoluminescence (PL), resonant Raman, and photoabsorption (PA) spectroscopies are employed to study quantumsize effects in II-VI semiconductor quantum dots (QDs) grown in glass samples. We observe a size-dependent shift in the energetic position of the first exciton peak and have examined the photoinduced evolution of the differential absorption spectra. The Raman shifts of the phonon modes are employed to monitor stoichiometric changes in the composition of the QDs during growth. Two sets of glass samples were prepared from color filters doped with CdSxSe1-xand ZnxCd1-xTe. We analyze the opt . . .ical properties of QDs through the ABS, PL, resonant Raman, and PA spectroscopies. The glass samples were prepared from commercially available semiconductor doped filters by a two-step thermal treatment. The average size of QDs is estimated from the energetic position of the first exciton peak in the ABS spectrum. A calculation based on a quantized-state effective mass model in the strong confinement regime predicts that the average radius of QDs in the glass samples ranges from 2.9 to 4.9 nm for CdTe and from 2.2 to 9.3 nm for CdS0:08Se0:92. We have also studied the nonlinear optical properties of QDs by reviewing the results of size-dependent photoinduced modulations in the first exciton band of CdTe QDs studied by PA spectroscopy. © Springer-Verlag Berlin Heidelberg 2013 Daha fazlası Daha az

An investigation on characterization of dynamic pressure transducers using material impact test machine

Durgut, Y. | Bağcı, E. | Akşahin, E. | İnce, A.T.

Article | 2017 | Journal of the Brazilian Society of Mechanical Sciences and Engineering39 ( 9 ) , pp.3645 - 3655

The need for reliable dynamic measurements and characterization of pressure transducers are important, especially in the fields of aerospace, defense and machinery manufacturing. Such measurements are performed on systems in which input pressure varies over time and must accurately capture the dynamic variations in pressure over short time intervals. This study presents a research work and measurements on the dynamic calibration of pressure transducers using a drop mass system and a high-speed impact tester. The impact test machine also uses the drop mass principle similar to some secondary level dynamic measurement instruments. The . . . pulses which are produced by the impact test machine can be used as a dynamic pressure generator for the test and characterization of pressure transducers. For this purpose, a new experimental calibration setup was constructed on the impact test machine. The dynamic behaviors of pressure transducers were investigated using pulses obtained from varying dropping speeds and energies of the drop mass in this new setup. Experimental results were compared with the results obtained from a manual drop mass pulse generator. Results show that while there is some variance about 15% at 200 MPa as the variance becomes less than 5% at 300, 400, and 500 MPa. As a result, it is concluded that an impact test machine can be used as a reliable dynamic pulse generator. © 2017, The Brazilian Society of Mechanical Sciences and Engineering Daha fazlası Daha az

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