Sample records for kask keit lhmus
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Development of optical sciences in Poland
NASA Astrophysics Data System (ADS)
Romaniuk, Ryszard S.
2013-10-01
Research and technical communities for optics, photonics and optoelectronics is grouped in this country in several organizations and institutions. These are: Photonics Society of Poland (PSP), Polish Committee of Optoelectronics of SEP, Photonics Section of KEiT PAN, Laser Club at WAT, and Optics Section of PTF. Each of these communities keeps slightly different specificity. PSP publishes a quarterly journal Photonics Letters of Poland, stimulates international cooperation, and organizes conferences during Industrial Fairs on Innovativeness. PKOpto SEP organizes didactic diploma competitions in optoelectronics. KEiT PAN takes patronage over national conferences in laser technology, optical fiber technology and communications, and photonics applications. SO-PTF has recently taken a decision to organize a cyclic event "Polish Optical Conference". The third edition of this conference PKO'2013 was held in Sandomierz on 30.06-04.07.2013. The conference scientific and technical topics include: quantum and nonlinear optics, photon physics, optic and technology of lasers and other sources of coherent radiation, optoelectronics, optical integrated circuits, optical fibers, medical optics, instrumental optics, optical spectroscopy, optical metrology, new optical materials, applications of optics, teaching in optics. This paper reviews chosen works presented during the III Polish Optical Conference (PKO'2013), representing the research efforts at different national institutions.
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NASA Technical Reports Server (NTRS)
1981-01-01
Through the use of NASA Tech Briefs, Peter Kask, was able to build a solarized domestic hot water system. Also by applying NASA's solar energy design information, he was able to build a swimming pool heating system with minimal outlay for materials.
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1986-05-23
Kraftwerk Union Power Plant... DER SPIEGEL: ...a 100-percent Siemens daughter enterprise... Kaske: ...to companies which are participating in the...major competitor, Kraftwerk Union AG (KWU) at Muelheim on the Ruhr, with its mass-produced light-water reactors. The High Temperature Reactor
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Hanna, Jeff; Pulvermüller, Friedemann
2014-01-01
Complex words can be seen as combinations of elementary units, decomposable into stems and affixes according to morphological rules. Alternatively, complex forms may be stored as single lexical entries and accessed as whole forms. This study uses an event-related potential brain response capable of indexing both whole-form retrieval and combinatorial processing, the Mismatch Negativity (MMN), to investigate early brain activity elicited by morphologically complex derived words in German. We presented complex words consisting of stems "sicher" (secure), or "sauber" (clean) combined with abstract nominalizing derivational affixes -heit or -keit, to form either congruent derived words: "Sicherheit" (security) and "Sauberkeit" (cleanliness), or incongruent derived pseudowords: *"Sicherkeit", and *"Sauberheit". Using this orthogonal design, it was possible to record brain responses for -heit and -keit in both congruent and incongruent contexts, therefore balancing acoustic variance. Previous research has shown that incongruent combinations of symbols elicit a stronger MMN than congruent combinations, but that single words or constructions stored as whole forms elicit a stronger MMN than pseudowords or non-existent constructions. We found that congruent derived words elicited a stronger MMN than incongruent derived words, beginning about 150 ms after perception of the critical morpheme. This pattern of results is consistent with whole-form storage of morphologically complex derived words as lexical units, or mini-constructions. Using distributed source localization methods, the MMN enhancement for well-formed derivationally complex words appeared to be most prominent in the left inferior anterior-temporal, bilateral superior parietal and bilateral post-central, supra-marginal areas. In addition, neurophysiological results reflected the frequency of derived forms, thus providing further converging evidence for whole form storage and against a combinatorial mechanism.
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Hanna, Jeff; Pulvermüller, Friedemann
2014-01-01
Complex words can be seen as combinations of elementary units, decomposable into stems and affixes according to morphological rules. Alternatively, complex forms may be stored as single lexical entries and accessed as whole forms. This study uses an event-related potential brain response capable of indexing both whole-form retrieval and combinatorial processing, the Mismatch Negativity (MMN), to investigate early brain activity elicited by morphologically complex derived words in German. We presented complex words consisting of stems “sicher” (secure), or “sauber” (clean) combined with abstract nominalizing derivational affixes -heit or -keit, to form either congruent derived words: “Sicherheit” (security) and “Sauberkeit” (cleanliness), or incongruent derived pseudowords: *“Sicherkeit”, and *“Sauberheit”. Using this orthogonal design, it was possible to record brain responses for -heit and -keit in both congruent and incongruent contexts, therefore balancing acoustic variance. Previous research has shown that incongruent combinations of symbols elicit a stronger MMN than congruent combinations, but that single words or constructions stored as whole forms elicit a stronger MMN than pseudowords or non-existent constructions. We found that congruent derived words elicited a stronger MMN than incongruent derived words, beginning about 150 ms after perception of the critical morpheme. This pattern of results is consistent with whole-form storage of morphologically complex derived words as lexical units, or mini-constructions. Using distributed source localization methods, the MMN enhancement for well-formed derivationally complex words appeared to be most prominent in the left inferior anterior-temporal, bilateral superior parietal and bilateral post-central, supra-marginal areas. In addition, neurophysiological results reflected the frequency of derived forms, thus providing further converging evidence for whole form storage and against a
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Free-surface turbulent wake of a surface-piercing slender body at various Froude numbers
NASA Astrophysics Data System (ADS)
Seo, Jeonghwa; Samad, Abdus; Rhee, Shin Hyung
2016-11-01
Free-surface effects on the near-wake around a surface-piercing slender body were investigated through flow field and wave elevation measurements. The near-wake flow field was measured by a towed underwater stereoscopic particle image velocimetry (SPIV) system. The measured flow field was analyzed to obtain coherent turbulence structures by using the Reynolds and proper orthogonal decomposition methods. Three different Froude numbers (Fr) - 0.126, 0.282, and 0.400 - were selected to represent mild, intermediate, and violent free-surface motions. At Fr = 0.126, the wave was hardly visible, although the turbulence strength and isotropy increased near the free-surface. At Fr = 0.282, though it was steady and smooth, wave-induced separation was clearly observed near the juncture of the free-surface and model trailing edge. At Fr = 0.400, wave breaking and the resulting bubbly free-surface were developed with an expanded wave-induced separation region. The wave-induced separation stimulated momentum transfer and turbulence dissipation, resulting in a significant change in the frequency of dominant free-surface motion in the downstream. This research was supported by the IT R&D program of MOTIE/KEIT (Grant No. 100660329) and the National Research Foundation of Korea, Grant funded by the Korean government (Grant No. 2013R1A1A2012597).
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Photonics and web engineering in Poland, WILGA 2009
NASA Astrophysics Data System (ADS)
Romaniuk, Ryszard S.
2009-06-01
The paper is a digest of work presented during a cyclic Ph.D. student symposium on Photonics and Web Engineering WILGA 2009. Symposium is organized by ISE PW in cooperation with professional organizations IEEE, SPIE, PSP and KEiT PAN. There are presented mainly Ph.D. and M.Sc. theses as well as achievements of young researchers. These papers, presented in such a big number, more than 250 in some years, are in certain sense a good digest of the condition of academic research capabilities in this branch of science and technology. The undertaken research subjects for Ph.D. theses in electronics is determined by the interest and research capacity (financial, laboratory and intellectual) of the young researchers and their tutors. Basically, the condition of academic electronics research depends on financing coming from applications areas. During Wilga 2009 there were organized, and thus the paper debates, the following topical sessions concerning applications of advanced electronics and photonics systems: merging of electronic systems and photonics, Internet engineering, distributed measurement systems, security in information technology, astronomy and cosmic technology, HEP experiments, environment protection, image processing and biometry. The paper contains also more general remarks concerning the workshops organized by and for the Ph.D. students in advanced photonics and electronics systems.
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Visualization of bacterial flagella dynamics in a viscous shear flow
NASA Astrophysics Data System (ADS)
Ali, Jamel; Kim, Minjun
2016-11-01
We report on the dynamics of tethered bacterial flagella in an applied viscous shear flow and analyze their behavior using image processing. Flagellin proteins were repolymerized into flagellar filaments functionalized with biotin at their proximal end, and allowed to self-assemble within a micro channel coated with streptavidin. It was observed that all attached flagellar filaments aligned with the steady shear flow of various polymeric solutions. Furthermore it was observed that many of the filaments were stretched, and at elevated flow rates began to undergo polymorphic transformations, which were initiated at one end of the flagellum. When undergoing a change to a different helical form the flagellum was observed to transform to an oppositely handed helix, as to counteract the viscous torque imparted by the shear flow. It was also observed that some flagellar filaments did not undergo polymorphic transformations, but rotated about their helical axis. The rate of this rotation appears to be a function of the applied flow rate. These results expand on previous experimental work and aid in the development of a novel platform that harnesses the autonomic response of a 'forest' of bacterial flagella for engineering applications. This work was funded by NSF Grant CMMI-1000255, KEIT MOTIE Grant No. 10052980, and with Government support under and awarded by DoD, Air Force Office of Scientific Research, National Defense Science and Engineering Graduate (NDSEG) Fellowship, 32 CFR 168a.
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Photonics applications and web engineering: WILGA Winter 2016
NASA Astrophysics Data System (ADS)
Romaniuk, Ryszard S.
2016-09-01
Since twenty years, young researchers form the Institute of Electronic Systems, Warsaw University of Technology, organize two times a year, under only a marginal supervision of the senior faculty members, under the patronage of WEiTI PW, KEiT PAN, SPIE, IEEE, PKOpto SEP and PSF, the WILGA Symposium on advanced, integrated functional electronic, photonic and mechatronic systems [1-5]. All aspects are considered like: research and development, theory and design, technology - material and construction, software and hardware, commissioning and tests, as well as pilot and practical applications. The applications concern mostly, which turned after several years to be a proud specialization of the WILGA Symposium, Internet engineering, high energy physics experiments, new power industry including fusion, nuclear industry, space and satellite technologies, telecommunications, smart municipal environment, as well as biology and medicine [6-8]. XXXVIIth WILGA Symposium was held on 29-31 January 2016 and gathered a few tens of young researchers active in the mentioned research areas. There were presented a few tens of technical papers which will be published in Proc.SPIE together with the accepted articles from the Summer Edition of the WILGA Symposium scheduled for 29.05-06.06.2016. This article is a digest of chosen presentations from WILGA Symposium 2016 Winter Edition. The survey is narrowed to a few chosen and main topical tracks, like electronics and photonics design using industrial standards like ATCA/MTCA, also particular designs of functional systems using this series of industrial standards. The paper, summarizing traditionally since many years the accomplished WILGA Symposium organized by young researchers from Warsaw University of Technology, is also the following part of a cycle of papers concerning their participation in design of new generations of electronic systems used in discovery experiments in Poland and in leading research laboratories of the world.
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Hybrid functional microfibers for textile electronics and biosensors
NASA Astrophysics Data System (ADS)
Nanda Sahoo, Bichitra; Choi, Byungwoo; Seo, Jungmok; Lee, Taeyoon
2018-01-01
Fibers are low-cost substrates that are abundantly used in our daily lives. This review highlights recent advances in the fabrication and application of multifunctional fibers to achieve fibers with unique functions for specific applications ranging from textile electronics to biomedical applications. By incorporating various nanomaterials such as carbon nanomaterials, metallic nanomaterials, and hydrogel-based biomaterials, the functions of fibers can be precisely engineered. This review also highlights the performance of the functional fibers and electronic materials incorporated with textiles and demonstrates their practical application in pressure/tensile sensors, chemical/biosensors, and drug delivery. Textile technologies in which fibers containing biological factors and cells are formed and assembled into constructions with biomimetic properties have attracted substantial attention in the field of tissue engineering. We also discuss the current limitations of functional textile-based devices and their prospects for use in various future applications. Project supported by the Priority Research Centers Program (No. 2012-0006689) through the National Research Foundation (NRF) of Korea funded by the Ministry of Education, Science and Technology (MEST) and the R&D program of MOTIE/KEIT [10064081, Development of fiber-based flexible multimodal pressure sensor and algorithm for gesture/posture-recognizable wearable devices]. We gratefully acknowledge partial support from the National Research Foundation of Korea (No. NRF-2017K2A9A2A06013377, NRF-2017M3A7B4049466) and the Yonsei University Future-leading Research Initiative and Implantable artificial electronic skin for an ubiquitous healthcare system of 2016-12-0050. This work is also supported by KIST Project (Nos. 2E26900, 2E27630). Dr. Seo was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (No. 2016R1A6A3A03006491).
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Through-focus scanning optical microscopy (TSOM) with adaptive optics
NASA Astrophysics Data System (ADS)
Lee, Jun Ho; Park, Gyunam; Jeong, Junhee; Park, Chris
2018-03-01
Through-focus optical microscopy (TSOM) with nanometer-scale lateral and vertical sensitivity levels matching those of scanning electron microscopy has been demonstrated to be useful both for 3D inspections and metrology assessments. In 2014, funded by two private companies (Nextin/Samsung Electronics) and the Korea Evaluation Institute of Industrial Technology (KEIT), a research team from four universities in South Korea set out to investigate core technologies for developing in-line TSOM inspection and metrology tools, with the respective teams focusing on optics implementation, defect inspection, computer simulation and high-speed metrology matching. We initially confirmed the reported validity of the TSOM operation through a computer simulation, after which we implemented the TSOM operation by throughfocus scanning of existing UV (355nm) and IR (800nm) inspection tools. These tools have an identical sampling distance of 150 nm but have different resolving distances (310 and 810 nm, respectively). We initially experienced some improvement in the defect inspection sensitivity level over TSV (through-silicon via) samples with 6.6 μm diameters. However, during the experiment, we noted sensitivity and instability issues when attempting to acquire TSOM images. As TSOM 3D information is indirectly extracted by differentiating a target TSOM image from reference TSOM images, any instability or mismatch in imaging conditions can result in measurement errors. As a remedy to such a situation, we proposed the application of adaptive optics to the TSOM operation and developed a closed-loop system with a tip/tilt mirror and a Shack-Hartmann sensor on an optical bench. We were able to keep the plane position within in RMS 0.4 pixel by actively compensating for any position instability which arose during the TSOM scanning process along the optical axis. Currently, we are also developing another TSOM tool with a deformable mirror instead of a tip/tilt mirror, in which case we
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DOE Office of Scientific and Technical Information (OSTI.GOV)
Cho, M; Kim, T; Kang, S
supported by the Industrial R&D program of MOTIE/KEIT. [10048997, Development of the core technology for integrated therapy devices based on real-time MRI guided tumor tracking] and the Mid-career Researcher Program (2014R1A2A1A10050270) through the National Research Foundation of Korea funded by the Ministry of Science, ICT&Future Planning.« less
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Advanced photonic, electronic, and web engineering systems: WILGA Symposium, January 2013
NASA Astrophysics Data System (ADS)
Romaniuk, Ryszard S.
2013-10-01
The cycle of WILGA Symposia [wilga.ise.pw.edu.pl] on Photonics and Web Engineering, Advanced Electronic Systems, under the auspices of SPIE, IEEE, KEiT PAN and WEiTI PW was initiated in 1998 by a Research Team PERG/ELHEP ISE PW. The WILGA conferences take place two times a year and the participants are young scientists from this country and abroad. This paper debates chosen topical tracks and some papers presented during the 31 WILGA Multi-Conference, which took place on 8-10 February 2013 at the Faculty of WEiTI PW. The January conference was attended by around 100 persons. Here we discuss closer the subjects of biomedical photonics, electronics and informatics, as well as chosen aspects of applications of advanced photonic, electronic circuits and systems. The 32 nd WILGA Symposium took place on 27 May - 02 June 2013 in WUT WILGA resort near Warsaw. These two editions of WILGA Conferences - January and May have generated more than 250 articles, from which around 100 were chosen by the Symposium and Conference Committees to be published in this volume of Proc.SPIE. WILGA Symposium papers are traditionally submitted via the WILGA web page [wilga.ise.pw.edu.pl] to the SPIE Proceedings publishing system [spie.org]. Email for the correspondence is: photonics@ise.pw.edu.pl. All Wilga papers are published in journals Elektronika, IJET-PAN and in Proc.SPIE. Topical tracks of the symposium usually embrace, among others, new technologies for photonics, sensory and nonlinear optical fibers, object oriented design of hardware, photonic metrology, optoelectronics and photonics applications, photonics-electronics co-design, optoelectronic and electronic systems for astronomy and high energy physics experiments, JET and pi-of-the sky experiments development. The symposium In its two editions a year is a summary of the development of numerable Ph.D. theses carried out in this country and this geographical region in the area of advanced electronic and photonic systems. It is also
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SU-E-I-64: Transverse Relaxation Time in Methylene Protons of Non-Alcoholic Fatty Liver Disease Rats
DOE Office of Scientific and Technical Information (OSTI.GOV)
Song, K-H; Lee, D-W; Choe, B-Y
2015-06-15
Purpose: The aim of this study was to evaluate transverse relaxation time of methylene resonance compared to other lipid resonances. Methods: The examinations were performed using a 3.0 T scanner with a point — resolved spectroscopy (PRESS) sequence. Lipid relaxation time in a lipid phantom filled with canola oil was estimated considering repetition time (TR) as 6000 msec and echo time (TE) as 40 — 550 msec. For in vivo proton magnetic resonance spectroscopy ({sup 1}H — MRS), eight male Sprague — Dawley rats were given free access to a normal - chow (NC) and eight other male Sprague-Dawley ratsmore » were given free access to a high — fat (HF) diet. Both groups drank water ad libitum. T{sub 2} measurements in the rats’ livers were conducted at a fixed TR of 6000 msec and TE of 40 – 220 msec. Exponential curve fitting quality was calculated through the coefficients of determination (R{sup 2}). Results: A chemical analysis of phantom and liver was not performed but a T{sub 2} decay curve was acquired. The T{sub 2} relaxation time of methylene resonance was estimated as follows: NC rats, 37.07 ± 4.32 msec; HF rats, 31.43 ± 1.81 msec (p < 0.05). The extrapolated M0 values were higher in HF rats than in NC rats (p < 0.005). Conclusion: This study of {sup 1}H-MRS led to sufficient spectral resolution and signal — to — noise ratio differences to characterize all observable resonances for yielding T{sub 2} relaxation times of methylene resonance. {sup 1}H — MRS relaxation times may be useful for quantitative characterization of various liver diseases, including fatty liver disease. This study was supported by grant (2012-007883 and 2014R1A2A1A10050270) from the Mid-career Researcher Program through the NRF funded by Ministry of Science. In addition, this study was supported by the Industrial R&D of MOTIE/KEIT (10048997, Development of the core technology for integrated therapy devices based on real-time MRI-guided tumor tracking)« less
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SU-C-207-01: Four-Dimensional Inverse Geometry Computed Tomography: Concept and Its Validation
DOE Office of Scientific and Technical Information (OSTI.GOV)
Kim, K; Kim, D; Kim, T
2015-06-15
Purpose: In past few years, the inverse geometry computed tomography (IGCT) system has been developed to overcome shortcomings of a conventional computed tomography (CT) system such as scatter problem induced from large detector size and cone-beam artifact. In this study, we intend to present a concept of a four-dimensional (4D) IGCT system that has positive aspects above all with temporal resolution for dynamic studies and reduction of motion artifact. Methods: Contrary to conventional CT system, projection data at a certain angle in IGCT was a group of fractionated narrow cone-beam projection data, projection group (PG), acquired from multi-source array whichmore » have extremely short time gap of sequential operation between each of sources. At this, for 4D IGCT imaging, time-related data acquisition parameters were determined by combining multi-source scanning time for collecting one PG with conventional 4D CBCT data acquisition sequence. Over a gantry rotation, acquired PGs from multi-source array were tagged time and angle for 4D image reconstruction. Acquired PGs were sorted into 10 phase and image reconstructions were independently performed at each phase. Image reconstruction algorithm based upon filtered-backprojection was used in this study. Results: The 4D IGCT had uniform image without cone-beam artifact on the contrary to 4D CBCT image. In addition, the 4D IGCT images of each phase had no significant artifact induced from motion compared with 3D CT. Conclusion: The 4D IGCT image seems to give relatively accurate dynamic information of patient anatomy based on the results were more endurable than 3D CT about motion artifact. From this, it will be useful for dynamic study and respiratory-correlated radiation therapy. This work was supported by the Industrial R&D program of MOTIE/KEIT [10048997, Development of the core technology for integrated therapy devices based on real-time MRI guided tumor tracking] and the Mid-career Researcher Program (2014R1A2
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DOE Office of Scientific and Technical Information (OSTI.GOV)
Song, K-H; Lee, D-W; Choe, B-Y
2015-06-15
and MRS QA factors simultaneously. This study was supported by grant (2012-007883 and 2014R1A2A1A10050270) from the Mid-career Researcher Program through the NRF funded by Ministry of Science. In addition, this study was supported by the Industrial R&D of MOTIE/KEIT (10048997, Development of the core technology for integrated therapy devices based on real-time MRI-guided tumor tracking)« less
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An analysis of sea kayaking incidents in New Zealand 1992-2005.
Bailey, Iona
2010-09-01
The objective of this study was to investigate trends, medical problems, and contributory factors that occurred in 50 sea kayaking incidents in New Zealand between October 1992 and September 2005. There are currently very limited validated data available worldwide about the epidemiology of sea kayaking incidents. The research will raise awareness of how these events happened and their potential for serious harm. It will assist kayakers to manage their sport safely. This was a retrospective epidemiological study of incident reports originally collected by Paul Caffyn for the Kiwi Association of Sea Kayakers (KASK). Variables investigated in this study were geographic location, month, year, participant demographics, incident severity, type of kayak and trip, environmental conditions, safety gear carried, medical problems, cause of deaths, and contributory factors. Tables and graphs were developed to analyze the results. Incidents occurred around New Zealand throughout the year, often in rough seas in offshore winds. More people were involved in September. Fifty-six percent of incidents involved groups; 20% were overseas tourists and 72% were recreational private trips. Eighty-five percent of participants were male, mostly aged 24 to 39 years old, and 48% had little or no experience. The severity of incidents increased with time. Severity was lower for women. Severity was higher in calm conditions and light winds, when the capsized kayaker became separated from the kayak, and when a personal flotation device (PFD) was not worn. Fishing incidents had a higher severity and involved inexperienced kayakers. Human factors contributed to most if not all incidents and occurred more frequently than physical events. Where medical problems were reported, hypothermia and sprains were common. Collision with a powered vessel was often fatal. The study was limited because it was based on relatively small numbers, was unlikely to capture all incidents in New Zealand, and denominator