gebhart/patrepeval huggingface dataset:
An algorithm of conformal array DOA estimation with unknown source number (2014)

In order to solve the problem that most of the directions-of-arrival (DOA) algorithms are based on the prior knowledge of source number and the estimation error of source number leads to the degradation of DOA algorithm performance, a conformal array DOA algorithm with unknown source number is proposed. This method is realized by introducing the pseudo expected signal. The optimum weight deduced by the Maximum signal to inference and noise ratio (SINR) is applied to the received signal and the pseudo expected signal then the conformal array output signal to noise ratio (SNR) is regarded as the parameter of DOA to accomplish the estimation. During the processing the estimation of source number is avoided. The validity of the algorithm is verified by the simulation experiments. The simulation results show that the algorithm is effective and be superior to multiple signal classification (MUSIC) algorithm.
Ultrasonic Relaxation in Molecules Containing a Six-Membered Ring (1969)

The ultrasonic absorption in a number of liquids whose molecular structure is a six-membered ring has been measured over the frequency range 0.6–45 MHz at temperatures in the range −100 to +150°C. In piperidine and piperazine derivatives, a large relaxation with a low relaxation frequency is found at the higher temperatures of measurement. The activation energy of the relaxation indicates a barrier to inversion of the chair form of the ring of ∼10 kcal/mole. In cyclohexene and cyclohexanone derivatives, a different relaxation is found at the lower temperatures with a high relaxation frequency. Its molecular mechanism is believed to be the interconversion of chair and boat configurations of the ring, and these measurements represent, apparently, the only direct physical measurements of the elusive and important boat form in relatively simple molecules.
Understanding digital content marketing (2008)

Abstract This article argues that as the importance of digital content to business and society grows it is important seek a holistic perspective on the definition and nature of digital content marketing (DCM). Along the journey it becomes evident that a recurrent theme in DCM is customer value, and this leads into the second major contribution of the article, an exploration of the notion of customer value in digital content marketplaces. Digital content is defined as: 'bit-based objects distributed through electronic channels'. A structured analysis is conducted on the basis of a set of questions in order to surface some of the unique characteristics of digital content marketing. The analysis is informed by a literature review, and the exploration of numerous web sites which deliver different types of digital content. The conclusion summarises the unique characteristics of digital content, and associated consequences for digital content marketing. It focuses on the impact of the difficulty in developing a notion of 'value' in the context of digital content, and its consequences for value chain structures, pricing strategies, marketing communications and branding, and licensing and digital rights management. In addition, the customer's experience of digital content is influenced by all stakeholders in the value chain as well as requiring the customer to participate in learning and co-creation of the experience. The potential of the 'value-in-use' notion of customer value as a basis for ensuring that consumers are fully engaged as stakeholders in the content economy is discussed. On this basis recommendations for practice and further research are developed. Keywords: DIGITAL CONTENT MARKETINGINTERNET MARKETING
Investigating the electromechanical response mechanism of ionic block copolymers (2017)

One of the rapidly developing frontiers in research and engineering applications is focused on the rational design of materials that have targeted functionalities and tunable responses to external stimuli. Such materials stand to revolutionize how structural components are designed for applications including flexible electronics, biomimetic devices, nanofluidics, as well as separation chemistry. A chief obstacle to achieving this capability is the lack of a fundamental understanding of how chemical structure and morphology give rise to macromolecular properties. With this in mind, our research explores how polymer structure, counterion species, and film morphology affects the electromechanical response of materials when exposed to external electric fields. While the actuating behavior of materials such as Nafion have been commonly investigated, the literature lacks a thorough understanding of how the aforementioned factors drive the electrostatic and mechanical stresses that result in material deformation. Our research has investigated how thin film morphology and counterion species affect the electromechanical response of diblock copolymers containing charged imidazolium groups using neutron reflectometry. The sensitivity of neutron reflectometry to scattering length density as well as sub-nanometer changes in thickness make it an ideal tool for investigating polymer and counterion mobility under applied fields. To this end, we have designed a vacuum chamber capable of applying electric fields to thin films during reflectometry measurements. This chamber was used at the liquids reflectometer (BL-4B) at the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL) to explore the electromechanical response of ionic block copolymers.
Modulation of renal injury in pcy mice by dietary fat containing n−3 fatty acids depends on the level and type of fat (2004)

Low-fat diets and diets containing n-3 fatty acids (FA) slow the progression of renal injury in the male Han:Sprague-Dawley (SPRD)-cy rat model of polycystic kidney disease. To determine whether these dietary fat effects are similar in females and in another model of renal cystic disease, in this study we used both male and female pcy mice to examine the effects of fat level and type on disease progression. Adult pcy mice were fed 4, 10, or 20 g soybean oil/100 g diet for 130 d in study 1. In study 2, weanling pcy mice were fed high or low levels of fat rich in 18:2n-6 (corn oil, CO), 18:3n-3 (flaxseed oil/CO 4:1 g/g, FO), or 22:6n-3 (algal oil/CO 4:1 g/g, DO) for 8 wk. In adult pcy mice, low- compared with high-fat diets lowered kidney weights (2.4 +/- 0.2 vs. 3.1 +/- 0.2 g/100 g body weight, P = 0.006) and serum urea nitrogen (SUN) (9.6 +/- 0.6 vs. 11.9 +/- 0.6 mmol/L, P = 0.009), whereas in young pcy mice it reduced renal fibrosis volumes (0.44 +/- 0.04 vs. 0.62 +/- 0.04 mL/kg body weight, P < 0.0001). FO feeding in young pcy mice mitigated the detrimental effects of high fat on fibrosis while not altering kidney size, function, and oxidative damage when compared with the CO-fed mice. In contrast, DO- compared with CO-fed mice had higher kidney weights (2.64 +/- 0.07 vs. 2.24 +/- 0.08 g/100 g body weight, P = 0.005), SUN (9.4 +/- 0.57 vs. 7.0 +/- 0.62 mmol/L, P < 0.0001), and cyst volumes (7.9 +/- 0.28 vs. 6.2 +/- 0.30 mL/kg body weight, P < 0.0001) and similar levels of oxidative damage and fibrosis. The FA compositions of the diets were reflected in the kidneys: 18:2n-6, 18:3n-3, and 22:6n-3 were the highest in the CO, FO, and DO diets, respectively. Dietary effects on kidney disease progression were similar in males and females. A low-fat diet slows progression of renal injury in male and female pcy mice, consistent with findings in the male Han:SPRD-cy rat. Dietary fat type also influenced renal injury, with flaxseed oil diets rich in 18:3n-3 slowing early fibrosis progression compared with diets rich in 18:2n-6 or in 22:6n-3.
IMPROVEMENT OF PHYSICO- MECHANICAL PROPERTIES OF THERMOREACTIVE AND THERMOPLASTIC POLYMERIC COVERINGS BY PHYSICAL METHODS OF MODIFICATION (2008)

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation S. S. Negmatov, K. M. Mamadoliev, B. B. Sobirov, I. K. Latipov, E. Ergashev, B. Sh. Rakhmanov, A. A. Jonuzakov, Yu. A. Salimsakov, T. Almataev, N. A. Ikramov, B. M. Tajibaev; IMPROVEMENT OF PHYSICO‐ MECHANICAL PROPERTIES OF THERMOREACTIVE AND THERMOPLASTIC POLYMERIC COVERINGS BY PHYSICAL METHODS OF MODIFICATION. AIP Conf. Proc. 28 August 2008; 1042 (1): 67–69. https://doi.org/10.1063/1.2989075 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAIP Publishing PortfolioAIP Conference Proceedings Search Advanced Search |Citation Search
Evolution and Impact of Defects in a p-Channel CCD After Cryogenic Proton-Irradiation (2017)

The p-channel charge coupled devices (CCDs) have been shown to display improved tolerance to radiation-induced charge transfer inefficiency when compared with n-channel CCDs. However, the defect distribution formed during irradiation is expected to be temperature dependent due to the differences in lattice energy caused by a temperature change. This has been tested through defect analysis of two p-channel e2v CCD204 devices, one irradiated at room temperature and one at a cryogenic temperature (153 K). Analysis is performed using the method of single trap pumping. The dominant charge trapping defects at these conditions have been identified as the donor level of the silicon divacancy and the carbon interstitial defect. The defect parameters are analyzed both immediately postirradiation and following several subsequent room-temperature anneal phases up until a cumulative anneal time of approximately 10 months. We have also simulated charge transfer in an irradiated CCD pixel using the defect distribution from both the room-temperature and cryogenic case, to study how the changes affect imaging performance. The results demonstrate the importance of cryogenic irradiation and annealing studies, with large variations seen in the defect distribution when compared to a device irradiated at room-temperature, which is the current standard procedure for radiation-tolerance testing.
The Usefulness of Oncoplastic Volume Displacement Techniques in the Superiorly Located Breast Cancers for Korean Patients With Small to Moderate-Sized Breasts (2011)

Because the average breast size of Korean women is not as large as that of western women, it is not so easy to apply the oncoplastic volume displacement technique. However, we have tried to use volume displacement techniques that work well with small-breasted women. In this study, we report the usefulness of displacement techniques in the superiorly located cancers with small- to moderate-sized breasts. Between September 2006 and August 2009, 58 women were treated for superiorly located cancers. All patients who were selected had small- to moderate-sized breasts and small to moderate breast defects. They were divided into 3 groups. The groups were split based on the distance from the nipple-areolar complex, which are as follows: near, intermediate, and far. Their mean age was 46 and the average follow-up interval was 21 months. Median weight of the specimen on the tumor side was 84 g (range, 29-140 g). The various surgical techniques used were the "round block" technique (n = 8) and "batwing mastopexy" (n = 4) for near lesions; "tennis racket" method (n = 32) and "rotational flap" (n = 8) for intermediate lesions; and "parallelogram mastopexy lumpectomy" (n = 6) for far lesions. There were 4 complications (nipple-areolar complex partial necrosis, radiation burn, and 2 wound dehiscence). No local recurrences have been observed and a majority of the patients were satisfied with cosmetic results. Oncoplastic volume displacement techniques in superiorly located breast cancers for Korean patients with small- to moderate-sized breast are reliable and should be considered in the case of breast conserving surgery (BCS).
Relationships between G1 arrest and stability of the p53 and p21Cip1/Waf1 proteins following gamma-irradiation of human lymphoma cells. (1995)

We investigated temporal relationships between ionizing radiation-induced G1 arrest and induction of the p53-regulated genes GADD45, CIP1/WAF1, and MDM2 in a series of Burkitt's lymphoma and lymphoblastoid cell lines that differed in p53 gene status. Emphasis was placed on characterization of the EW36 cell line, which despite expressing wild-type p53 genes, is defective in G1 arrest following gamma-irradiation (P. M. O'Connor et al., Cancer Res., 53: 4776-4780, 1993). Induction of CIP1/WAF1, GADD45, and to a lesser extent MDM2 mRNA was observed in all wild-type p53 lines that arrested in G1. Cell lines that contained only mutant p53 genes or were heterozygous for p53 mutations failed to induce appreciable levels of these p53-regulated transcripts and did not arrest in G1. G1 arrest in the wild-type p53 cell line WMN was more prolonged than elevation of CIP1/WAF1, GADD45, or MDM2 transcripts, suggesting that G1 arrest duration must be dependent upon stability of these newly synthesized proteins. In agreement, we found that p21Cip1/Waf1, a potent inhibitor of G1-S phase cyclin-dependent kinases, was maintained at elevated levels throughout the period that WMN cells remained arrested in G1. EW36 cells exhibited normal induction of CIP1/WAF1, GADD45, and MDM2 mRNA following gamma-irradiation, suggesting that the defect in G1 arrest must reside downstream of p53 transactivation. Investigations into the stability of p53 and p21Cip1/Waf1 revealed that EW36 cells failed to maintain elevated levels of these proteins following irradiation. p53 levels decreased within 4 h of irradiation, and p21Cip1/Waf1 levels decreased shortly after the normal decline of CIP1/WAF1 mRNA levels. Degradation of p21Cip1/Waf1 coincided with the escape of EW36 cells from G1 arrest. Our studies suggest that p21Cip1/Waf1 stability may determine G1 arrest duration and that premature degradation of this protein could provide an alternative route to subversion of the G1 checkpoint in cancer cells.
ANGPTL2 activity in cardiac pathologies accelerates heart failure by perturbing cardiac function and energy metabolism (2016)

A cardioprotective response that alters ventricular contractility or promotes cardiomyocyte enlargement occurs with increased workload in conditions such as hypertension. When that response is excessive, pathological cardiac remodelling occurs, which can progress to heart failure, a leading cause of death worldwide. Mechanisms underlying this response are not fully understood. Here, we report that expression of angiopoietin-like protein 2 (ANGPTL2) increases in pathologically-remodeled hearts of mice and humans, while decreased cardiac ANGPTL2 expression occurs in physiological cardiac remodelling induced by endurance training in mice. Mice overexpressing ANGPTL2 in heart show cardiac dysfunction caused by both inactivation of AKT and sarco(endo)plasmic reticulum Ca<sup>2+</sup>-ATPase (SERCA)2a signalling and decreased myocardial energy metabolism. Conversely, Angptl2 knockout mice exhibit increased left ventricular contractility and upregulated AKT-SERCA2a signalling and energy metabolism. Finally, ANGPTL2-knockdown in mice subjected to pressure overload ameliorates cardiac dysfunction. Overall, these studies suggest that therapeutic ANGPTL2 suppression could antagonize development of heart failure.
일반논문 : 일본의 국가기구 형성에 관한 비판적 고찰 (2003)

본 연구논문은 정용덕 교수의 「한·일 국가기구 비교연구(서울: 대영문화사.2002)」를 중심으로 고찰하면서 일본이 정부기구를 형성하는 데에 있어서 어떠한 원칙에서 구성하게 되었는 지에 대하여 문헌분석을 통하여 시도한 것이다. 저자는 국가기구 형성이론으로서 다원주의적, 개인주의적, 엘리트주의적, 자본주의적 접근방법 등을 통하여 한국과 일본의 정부형성 과정에 대하여 실증주의적으로 접근하고 있으나, 본 논문에서는 이러한 성과에 대하여 일정한 평가를 내림과 동시에 정부기구의 형태의 귀납적 결과를 가지고 전체를 파악하려고 하는 문제점도 지적하였다. 본 논문의 목적은 국가기구 형성에 대하여 일본의 예를 들고 보다 근원적인 문제에 대하여 가일층 접근하는 데에 있다. 이률 위하여 본문에서는 이론적 고찰을 통하여 일본의 정치·행정체제의 특성 및 일본 관료제의 형성과 특성에 관한 제논의를 고찰하고, 1980년대 이후의 일본 국가기구 형성과 어떠한 상관관계가 있는 지를 살펴보았다. 결론적으로, 국가기구 형성원리를 파악하기 위해서는 연역적인 국가구조주의적인 접근방법을 통한 보완이 필요하다는 것이다. 본문에서도 고찰하였듯이 일본관료제 형성과정은 일본의 정치 행정체제의 특색과 무관하지 않았다. 따라서, 국가기구의 형성에 대한 연구는 국가기구의 제도화의 동인(動因)에 대하여 귀납적 및 연역적 접근방법을 하는 많은 학자들간의 논쟁 및 연구성과가 있어야 할 것이다.
Quantification in <sup>68</sup>Ga-DOTA(0)-Phe(1)-Tyr(3)-Octreotide Positron Emission Tomography/Computed Tomography: Can We Be Impartial about Partial Volume Effects? (2013)

In (68)Ga-DOTATOC imaging, the clinical lesional size threshold is far larger than expected from systemic resolution only. Thus, tracer uptake quantification is only acceptable in sufficiently large lesions.
Large-scale assessment of human navigation ability across the lifespan (2020)

Navigation ability is particularly sensitive to aging. Evidence of aging patterns is largely restricted to comparing young adults and elderly and limited in the variety of navigation tasks used. Therefore, we designed a novel task battery to assess navigation ability in a very large, representative sample (N = 11,887, 8-100 years). The main aim was to measure navigation ability across the lifespan in a brief, yet comprehensive manner. Tasks included landmark knowledge, egocentric and allocentric location knowledge, and path knowledge for a route and survey perspective. Additionally, factors that potentially contribute to navigation ability were considered; gender, spatial experience and spatial anxiety. Increase in performance with age in children was found for allocentric location knowledge and for route-based path knowledge. Age related decline was found for all five tasks, each with clearly discernible aging patterns, substantiated the claim that each task distinctively contributes to the assessment of navigation ability. This study provides an in depth examination of navigation ability across dissociable functional domains and describes cognitive changes across the lifespan. The outcome supports the use of this task battery for brief assessment of navigation for experimental and clinical purposes.
Antenna Array for a 24-GHz Automotive Radar with Dipole Antenna Element Patches (2006)

In this paper 3D electromagnetic simulations of an antenna array have been performed. The array is intended for automotive radar applications at 24 GHz. It is constructed from dipole antenna element patches, which are fed in the center by a differential signal. The dipole antenna element patches are simulated assuming a standard off the shelf substrate. They have a standing wave ratio less than 3 from 22.5 GHz to 24.5 GHz, when matched to 60Ohm. The directivity of the dipole patch is 9 dBi. The array consists of 24 elements giving it a physical size of 150 mm, with a groundplane of 200×100 mm2. An antenna of that size is easy to integrate in a car. Beam steering can be accomplished by changing the phases of the signals to the different elements [1], thus making the arrangement mechanically robust since the antenna does not have to move. The directivity for the antenna array is larger than 9.4 dBi for a steering angle of ±7◦ and the half power beam width is smaller than 6◦ over the same steering angle.
Stimulation-mediated reverse engineering of silent neural networks (2023)

Reconstructing connectivity of neuronal networks from single-cell activity is essential to understanding brain function, but the challenge of deciphering connections from populations of silent neurons has been largely unmet. We demonstrate a protocol for deriving connectivity of simulated silent neuronal networks using stimulation combined with a supervised learning algorithm, which enables inferring connection weights with high fidelity and predicting spike trains at the single-spike and single-cell levels with high accuracy. We apply our method on rat cortical recordings fed through a circuit of heterogeneously connected leaky integrate-and-fire neurons firing at typical lognormal distributions and demonstrate improved performance during stimulation for multiple subpopulations. These testable predictions about the number and protocol of the required stimulations are expected to enhance future efforts for deriving neuronal connectivity and drive new experiments to better understand brain function.<b>NEW & NOTEWORTHY</b> We introduce a new concept for reverse engineering silent neuronal networks using a supervised learning algorithm combined with stimulation. We quantify the performance of the algorithm and the precision of deriving synaptic weights in inhibitory and excitatory subpopulations. We then show that stimulation enables deciphering connectivity of heterogeneous circuits fed with real electrode array recordings, which could extend in the future to deciphering connectivity in broad biological and artificial neural networks.
Hot-electron transport in epitaxialCoSi2films (1991)

We present a calculation of the photoelectric quantum yield of Schottky diodes, taking into account the spatial distribution of photon absorption in the metal film. We also present measurements of the quantum yield of epitaxial ${\mathrm{CoSi}}_{2}$ diodes, with metal thicknesses varying from 25 \AA{} up to 1000 \AA{}. A comparison of our experimental data with the results of this model leads to the determination of the escape depth of the hot electrons in ${\mathrm{CoSi}}_{2}$. The escape depth was found to be around 90 \AA{} at room temperature and 100 \AA{} at 77 K for 0.75-eV incident-photon energy and to decrease slightly with photon energy. These results are discussed and interpreted in terms of electron-phonon and electron-electron interactions.
Combining Biomimetic Block Copolymer Worms with an Ice‐Inhibiting Polymer for the Solvent‐Free Cryopreservation of Red Blood Cells (2016)

Abstract The first fully synthetic polymer‐based approach for red‐blood‐cell cryopreservation without the need for any (toxic) organic solvents is reported. Highly hydroxylated block copolymer worms are shown to be a suitable replacement for hydroxyethyl starch as a extracellular matrix for red blood cells. When used alone, the worms are not a particularly effective preservative. However, when combined with poly(vinyl alcohol), a known ice‐recrystallization inhibitor, a remarkable additive cryopreservative effect is observed that matches the performance of hydroxyethyl starch. Moreover, these block copolymer worms enable post‐thaw gelation by simply warming to 20 °C. This approach offers a new solution for both the storage and transport of red blood cells and also a convenient matrix for subsequent 3D cell cultures.
Prevalence, Underlying Causes, and Preventability of Sepsis-Associated Mortality in US Acute Care Hospitals (2019)

In this cohort from 6 US hospitals, sepsis was the most common immediate cause of death. However, most underlying causes of death were related to severe chronic comorbidities and most sepsis-associated deaths were unlikely to be preventable through better hospital-based care. Further innovations in the prevention and care of underlying conditions may be necessary before a major reduction in sepsis-associated deaths can be achieved.
Evaluation of Flow-induced Forces in Hydraulic Valves (2019)

The International Fluid Power Conference is a two day event, intended for all those professionally-involved with hydraulic or pneumatic power devices and for all those, wishing to be informed about the ‘state of the art’, new discoveries and innovations within the field of hydraulics and pneumatics. The gathering of experts at this conference in Maribor has been a tradition since 1995, and is organised by the Faculty of Mechanical Engineering at the University of Maribor, in Slovenia. Fluid Power conferences are organised every second year and cover those principal technical events within the field of fluid power technologies in Slovenia, and throughout this region of Europe. This year's conference is taking place on the 19th and 20th September in Maribor.