gebhart/patrepeval huggingface dataset:
UAV-Aided Wireless Powered Communication Networks: Trajectory Optimization and Resource Allocation for Minimum Throughput Maximization (2019)

This paper investigates wireless powered communication network (WPCN) systems aided by unmanned aerial vehicle (UAV) where a UAV-mounted access point (AP) serves multiple energy-constrained ground terminals (GTs). Specifically, the UAVs first transmit the wireless energy transfer (WET) signals to charge the GTs in the downlink. Then, by utilizing the harvested energy, the GTs send their wireless information transmission (WIT) signals to the UAVs in the uplink. In this paper, depending on the operations of the UAVs, we consider two different scenarios, namely integrated and separated UAV WPCNs. First, in the integrated system, a UAV acts as a hybrid AP in which both energy transfer and information reception are performed at a single UAV. In contrast, for the separated UAV WPCN, we consider two UAVs each of which behaves as an information AP and an energy AP independently, and thus the information decoding and the energy transfer are separately processed at two different UAVs. In each system, we formulate two optimization problems taking into account a linear energy harvesting (EH) model and a practical non-linear model. To maximize the minimum throughput of the GTs, we jointly optimize the trajectories of the UAVs, the uplink power control, and the time resource allocation for the WET and the WIT. Since the formulated problems are non-convex, in the linear EH model-based system, we apply the concave-convex procedure by deriving appropriate convex bounds for non-convex constraints and identify the suboptimal solution for the problem by a proposed iterative algorithm. In the non-linear model-based system, we propose another algorithm to obtain an efficient solution by adopting the successive convex approximation method with the alternating optimization framework. Simulation results demonstrate the efficiency and the performance of the proposed algorithms compared to conventional schemes.
Rechargeable Ni-Li Battery Integrated Aqueous/Nonaqueous System (2009)

A rechargeable Ni-Li battery, in which nickel hydroxide serving as a cathode in an aqueous electrolyte and Li metal serving as an anode in an organic electrolyte were integrated by a superionic conductor glass ceramic film (LISICON), was proposed with the expectation to combine the advantages of both a Li-ion battery and Ni-MH battery. It has the potential for an ultrahigh theoretical energy density of 935 Wh/kg, twice that of a Li-ion battery (414 Wh/kg), based on the active material in electrodes. A prototype Ni-Li battery fabricated in the present work demonstrated a cell voltage of 3.47 V and a capacity of 264 mAh/g with good retention during 50 cycles of charge/discharge. This battery system with a hybrid electrolyte provides a new avenue for the best combination of electrode/electrolyte/electrode to fulfill the potential of high energy density as well as high power density.
Substrate specificity of FUT8 and chemoenzymatic synthesis of core-fucosylated asymmetric N-glycans (2016)

Correction for 'Substrate specificity of FUT8 and chemoenzymatic synthesis of core-fucosylated asymmetric N-glycans' by Angie D. Calderon et al., Org. Biomol. Chem., 2016, DOI: 10.1039/c6ob00586a.
Catalytic Asymmetric Addition Reactions of Carbonyls. A Common Catalytic Approach (1999)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCatalytic Asymmetric Addition Reactions of Carbonyls. A Common Catalytic ApproachKarl Anker Jørgensen, Mogens Johannsen, Sulan Yao, Hélène Audrain, and Jacob ThorhaugeView Author Information Center for Metal Catalyzed Reactions, Department of Chemistry, Aarhus University, DK-8000 Aarhus C, Denmark Cite this: Acc. Chem. Res. 1999, 32, 7, 605–613Publication Date (Web):May 13, 1999Publication History Received26 August 1998Published online13 May 1999Published inissue 1 July 1999https://pubs.acs.org/doi/10.1021/ar970347fhttps://doi.org/10.1021/ar970347fresearch-articleACS PublicationsCopyright © 1999 American Chemical SocietyRequest reuse permissionsArticle Views1729Altmetric-Citations199LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose SUBJECTS:Addition reactions,Aldol reactions,Carbonyls,Catalysts,Ethyl groups Get e-Alerts
Igfbp-3 mediates TGFβ1 proliferative response in colon cancer cells (2000)

Many human tumor cells are resistant to growth inhibition by TGF beta 1. Resistance may be caused by mutations in TGFbeta receptors or in other components of the TGF beta signal transduction systems, or by knockout of the retinoblastoma (Rb) gene, which in fibroblasts converts cellular response to TGF beta 1 from growth inhibition to growth stimulation. Our earlier studies showed such a switch in response to TGF beta 1 occurred in 45% of colon cancers but without deletion of Rb. We now show that insulin-like growth factor binding protein 3 (IGFBP-3) mediates the TGF beta 1-induced proliferation of 3 metastatic or highly aggressive colon carcinoma cell lines. TGF beta 1 increases IGFBP-3 abundance while phosphorothiolated antisense oligonucleotides to IGFBP-3 block the growth-promoting effect of TGF beta 1 in each of 3 lines.IGFBP-3 induces carcinoma cell growth in a dose-dependent and time-dependent manner in vitro. IGFBP-3 may confer a selective growth advantage on tumor cells in vivo because levels of mature IGFBP-3 were elevated at least 2-fold in 7 of 10 resected colon cancers compared with adjacent normal tissue.
Redirected walking to explore virtual environments (2008)

Redirected walking has gained popularity in recent years as a way of enhancing the safety of users immersed in a virtual reality simulation and of extending the amount of space that can be simulated in a virtual environment (VE). Limits imposed by the available physical space and functional tracking area are overcome by inducing immersed users to veer imperceptibly in a way that prevents them from leaving the confines of the tracking space. Redirected walking has been shown to be feasible at levels below noticeable thresholds and to function without increasing the incidence of simulator sickness. The present studies demonstrate that redirected walking can function without negatively impacting memory for spatial locations of landmarks in a VE, despite introducing discrepancies between various spatial senses and distorting the spatial mapping of movement onto the environment. Additionally, the present studies implement what, to our knowledge, is the first generalized redirected walking algorithm that is independent of any task or environment structure, and can adaptively steer users in real time as they engage in spontaneous, unconstrained navigation. The studies also demonstrate that such an algorithm can be implemented successfully in a gymnasium-sized space.
A Development of SNS Application for Location based Information Sharing using Smartphone (2013)

스마트폰의 사용이 일상화되면서, 그 휴대성에 의해서 소셜 네트워크 서비스(SNS, Social Network Service) 어플리케이션의 사용이 매우 활발하다. 또한 위치 이동에 따른 정보의 활용이 가능한 위치 기반 서비스(Location based Service)의 수요가 확대되면서 SNS와 결합된 형태의 서비스가 스마트폰의 사용성을 향상시키고 있다. 본 논문에서는 사용자의 위치를 실시간으로 추적하여 이동하는 위치에 따라 작성되어진 SNS를 위한 정보를 자동으로 알려주는 LBSNS(Location Based Social Networking Service)가 가능한 어플리케이션을 구현한다. Recently, as increasing use of smartphone, the development of social network service(SNS) applications is very active because of the mobility of smartphone. In addition, as the demand of the location based service(LBS) supporting mobile information is expanded, LBS combined with SNS improves the usability of smart phones. This paper proposes the smartphone application that provides the information for SNS generated depending on the location, by tracking the user's location in real time.
Cnvlutin (2016)

This work observes that a large fraction of the computations performed by Deep Neural Networks (DNNs) are intrinsically ineffectual as they involve a multiplication where one of the inputs is zero. This observation motivates Cnvlutin ( CNV ), a value-based approach to hardware acceleration that eliminates most of these ineffectual operations, improving performance and energy over a state-of-the-art accelerator with no accuracy loss. CNV uses hierarchical data-parallel units, allowing groups of lanes to proceed mostly independently enabling them to skip over the ineffectual computations. A co-designed data storage format encodes the computation elimination decisions taking them off the critical path while avoiding control divergence in the data parallel units. Combined, the units and the data storage format result in a data-parallel architecture that maintains wide, aligned accesses to its memory hierarchy and that keeps its data lanes busy. By loosening the ineffectual computation identification criterion, CNV enables further performance and energy efficiency improvements, and more so if a loss in accuracy is acceptable. Experimental measurements over a set of state-of-the-art DNNs for image classification show that CNV improves performance over a state-of-the-art accelerator from 1.24× to 1.55× and by 1.37× on average without any loss in accuracy by removing zero-valued operand multiplications alone. While CNV incurs an area overhead of 4.49%, it improves overall EDP (Energy Delay Product) and ED 2 P (Energy Delay Squared Product) on average by 1.47× and 2.01×, respectively. The average performance improvements increase to 1.52× without any loss in accuracy with a broader ineffectual identification policy. Further improvements are demonstrated with a loss in accuracy.
N‐acetylcysteine prevents endotoxin‐induced degeneration of oligodendrocyte progenitors and hypomyelination in developing rat brain (2004)

Periventricular leukomalacia (PVL), the dominant form of brain injury in premature infants, is characterized by diffuse white matter injury and is associated with cerebral palsy (CP). Maternal and placental infections are major causes of prematurity and identifiable etiology of PVL and CP. Here we have evaluated the therapeutic efficacy of N-acetylcysteine (NAC), a potent antioxidant and precursor of glutathione, to attenuate lipopolysaccharide (LPS)-induced white matter injury and hypomyelination in the developing rat brain, an animal model of PVL. Intraperitoneal pretreatment of pregnant female rats with NAC (50 mg/kg), 2 hr prior to administration of LPS at embryonic day 18 (E18), attenuated the LPS-induced expression of inflammatory cytokines such as tumor necrosis factor-alpha, interleukin-1beta, and inducible nitric oxide synthase in fetal rat brains. There were significantly reduced numbers of TUNEL(+) nuclei coimmunostained for platelet-derived growth factor-alphaR(+) [a surface marker for oligodendrocyte progenitor cells (OPCs)] at E20 in the subventricular zone of fetal rat brain in the NAC + LPS group compared with the untreated LPS group. Interestingly, immunostaining for O4 and O1 as markers for late OPCs and immature oligodendrocytes demonstrated fewer O4(+) and O1(+) cells in the LPS group compared with the NAC + LPS and control groups. Consistent with O4(+)/O1(+) cell counts, the expression of myelin proteins such as myelin basic protein, proteolipid protein, and 2'3'-cyclic nucleotide phosphodiesterase, including transcription factors such as MyT1 and Gtx, was less in the LPS group at late postnatal days, indicating severe hypomyelination in the developing rat brain when compared with NAC + LPS and control groups. Collectively, these data support the hypothesis that NAC may provide neuroprotection and attenuate the degeneration of OPCs against LPS evoked inflammatory response and white matter injury in developing rat brain. Moreover, these data suggest the possible use of NAC as a treatment for pregnant women with maternal or placental infection as a means of minimizing the risk of PVL and CP.
Progressive Keyword Search in Relational Databases (2009)

A common approach to performing keyword search over relational databases is to find the minimum Steiner trees in database graphs. These methods, however, are rather expensive as the minimum Steiner tree problem is known to be NP-hard. Further, these methods cannot benefit from DBMS capabilities. We propose a new concept called Compact Steiner Tree (CSTree), which can be used to approximate the Steiner tree problem for answering top-k keyword queries efficiently. We propose a structure-aware index, together with an effective ranking mechanism for fast, progressive and accurate retrieval of top-k highest ranked CSTrees. The proposed techniques can be implemented using a standard RDBMS to benefit from its indexing and query processing capability. The experimental results show that our method achieves high search efficiency and result quality comparing to existing state-of-the-art approaches.
Origin, differentiation, and repertoire selection of CD3+CD4-CD8- thymocytes bearing either alpha beta or gamma delta T cell receptors (1993)

It has been widely accepted that CD3+CD4-CD8- T cells expressing TCR-alpha beta or TCR-gamma delta (found in the thymus as well as in the periphery) represent lineages distinct from either CD4+CD8- and CD4-CD8+ single-positive T cells expressing TCR-alpha beta. However, the origin, differentiation pathway, and TCR-repertoire selection of CD3+CD4-CD8- T cells remain controversial. We demonstrate that CD3+CD4-CD8- thymocytes can be separated into three subsets based on their expression of heat-stable Ag (HSA) and CD44. Our results further suggest the following: 1) the HSA+ subset represents a pre-selection population, although the HSA- subset is a postselection subset; 2) the high incidence of V beta 8.2 usage among CD3+CD4-CD8- thymocytes is a result of positive selection, rather than a predetermined event at a precursor cell level; 3) the maturation of CD3+CD4-CD8- thymocytes proceeds along the following differentiation pathway: HSA+CD44(-)-->HSA-CD44(-)-->HSA-CD44+. Both TCR-alpha beta +CD4-CD8- and TCR-gamma delta +CD4-CD8- thymocytes show similar differentiation processes; 4) CD3+CD4-CD8-cells directly differentiate from CD25+CD3-CD4-CD8- thymocytes which include precursor cells for both the CD3+CD4-CD8- and the CD4+CD8-/CD4-CD8+ lineages. Taken together, these results suggest that the CD25+CD3-CD4-CD8- stage of thymocyte differentiation represents a branching point for either the CD4+CD8- or CD4-CD8+ single-positive lineages or the CD3+CD4-CD8- lineages.
An Immunoassay to Detect Human Mullerian Inhibiting Substance in Males and Females during Normal Development* (1990)

An enzyme-linked immunosorbent assay has been developed to measure human Müllerian inhibiting substance (MIS) in biological fluids. The enzyme-linked immunosorbent assay is specific for MIS, with a sensitivity in human serum to 0.5 ng/ml and does not recognize transforming growth factor-beta 1 or -beta 2, LH, or FSH. It similarly fails to recognize other proteins secreted from the cell type into which the MIS gene was cloned. MIS was detected in the serum of normal newborns, infants, children, and adults. In males the serum level of MIS is 10-70 ng/mL at birth. The level increases slightly after birth, and then decreases to a basal level of 2-5 ng/mL after the first 10 yr of life. Newborn male urine contains minimal amounts of MIS (0.5 ng/mL). In females MIS is barely detectable in serum at birth, but rises to the basal level equal to that seen in males after 10 yr of age. Similar basal levels of MIS were found in adult ovarian follicular fluid. MIS levels were high in the serum of a female patient with a sex cord tumor (3200 ng/mL), but fell to 100 ng/mL after multiple excisional operations. In addition, a serum MIS level of 20 ng/mL was detected in a patient with an ovarian granulosa cell tumor. A sensitive assay for MIS could be useful in the diagnosis of patients with congenital abnormalities of sexual development and patients with Sertoli cell and/or other MIS-producing neoplasms. Other applications may also be recognized as the biology of MIS in both males and females is further elucidated.
A New Method Based on GIS and Application in Geochemical Data Processing (2005)

Facing increasing data, more demands for fast accurate and effective data analysis method is made to ore prediction. A new analysis method based on geographic information system is put forward in this paper, overcoming the shortage of traditional statistics that analysis results are influenced by specimen distributes and the minority with higher content. According to the geochemical data analysis results of Fenghuangshan Cu deposit, the new method has a good anti interference and fine resolution to ore forming geo anomalies
Antioxidants, Polymers (2002)

Abstract Antioxidants are used to retard the reaction of organic materials with atmospheric oxygen. Such reaction can cause degradation of the properties of the polymer; loss of flavor and development of rancidity in foods; and a change in lubricants. The need for antioxidants depends on the chemical composition of the substrate and the conditions of exposure. High concentrations of antioxidants, ie, 0.5–2% based on the weight of he polymer, are used to stabilize polymers such as natural rubber and polyunsaturated oils. Saturated polymers have greater oxidative stability and require relatively low concentrations of stabilizers; ie, 0.01–0.05%, based on the weight of the polymer. The mechanism by which an organic material (RH) undergoes autoxidation involves a free‐redical chain reaction. High concentrations are also required in substrates that are highly sensitive to oxidation, such as unsaturated elastomers and acrylonitrile–butadiene–styrene (ABS). Thermally induced homolytic decomposition of peroxides and hydroperoxides to free radicals increases the rate of oxidation. Decomposition to nonradical species removes hydroperoxides as potential sources of oxidation initiators. The selection of an antioxidant or system of antioxidants is dependent on the polymer and the anticipated end use. Low concentrations of antioxidants ( < 0.01%) are added to polyethylene and polypropylene after synthesis and prior to isolation to retard oxidation of the polymers exposed to air. Polyunsaturated elastomers are sensitive to oxidation. Antioxidants are added to the elastomers prior to vulcanization to protect the rubber during drying and storage. Nonstaining antioxidants may be used. Staining antioxidants are preferred for the manufacture of tires. Gasoline and jet engine fuels contain unsaturated compounds that oxidize on storage, darken, and form gums and deposits. Radical scanvengers and alkylated paraphenylene diamines are used as stabilizers. Lubricants for gasoline engines are required to withstand harsh conditions. Relatively high concentrations of primary antioxidants and synergists are used to stabilize lubricating oils. The oxidation of food containing fats and oils results in a loss of sensory appeal and eventually rancidness. The U.S. Food and Drug Administration (FDA) regulations covering the use of direct food additives are stringent and few new materials have been regulated. The most commonly used materials are butylated hydroxytoluene n ‐propyl gallatte, α‐tocopherol, and butylated hydroxyanisole. A number of antioxidants have been accepted by the FDA as indirect additives for polymers used in food applications.
Kinetic studies of laser chemical vapor deposition of titanium nitride (1994)

TiN films have been deposited on Ti-6Al-4V substrates by a cw CO2 laser chemical vapor deposition process with TiCl4, H2, and N2. Pulsed dye laser induced fluorescence spectroscopy is used to obtain transient gas phase Ti atomic concentration above the substrate. Multi-wavelength pyrometry is applied to measure the surface temperature during deposition. Film growth rates and compositions are obtained by stylus profilometry and Auger electron spectroscopy. Relationships between the growth rate and TiCl4, H2, and N2 partial pressures are established, from which the rate-controlling reactions and activation energy are obtained.
A Robust End-To-End Information Extraction System for Vietnamese Identity Cards (2019)

These days, automatic information extraction from identity documents is essential for many applications which require users authentication. In previous researches, this task was carried out by using image processing. However, the document identity recognition from images captured by smartphones encounters problems such as various backgrounds, perspective, blurring. Moreover, some cards may have dated backgrounds and diverse fonts printed manually by old typewriters. To solve these problems, this paper proposes an end-to-end system for extracting information from the Vietnamese identity cards captured by camera devices. Firstly, the ID card is aligned with the standard aspect ratio and orientation based on corner detection and national emblem detection. The proposed solution can locate and crop precisely the foreground target area of the oriented ID card in various contexts. In the text localization stage, a deep convolutional neural network model is used to bounding the required texts which are then classified by their positions. Finally, the text recognition is implemented based on the Attention OCR architecture. In experiments, this proposed method reduces processing time in comparison with the state of the art and the average accuracy achieved is higher 91%.
CaTDet: Cascaded Tracked Detector for Efficient Object Detection from Video (2018)

Detecting objects in a video is a compute-intensive task. In this paper we propose CaTDet, a system to speedup object detection by leveraging the temporal correlation in video. CaTDet consists of two DNN models that form a cascaded detector, and an additional tracker to predict regions of interests based on historic detections. We also propose a new metric, mean Delay(mD), which is designed for latency-critical video applications. Experiments on the KITTI dataset show that CaTDet reduces operation count by 5.1-8.7x with the same mean Average Precision(mAP) as the single-model Faster R-CNN detector and incurs additional delay of 0.3 frame. On CityPersons dataset, CaTDet achieves 13.0x reduction in operations with 0.8% mAP loss.
Beyond the 90‐90‐90: refocusing HIV prevention as part of the global HIV response (2016)

The United Nations (UN) targets to end AIDS include the "90-90-90" targets for HIV diagnosis, treatment and viral suppression. While 90-90-90 has been widely emphasized and adopted by countries and international funders, the focus thus far has largely been on increasing access to ART - the second "90." A similar emphasis on achieving UN HIV prevention targets and adequate funding for meeting these is essential, alongside treatment, in order to reduce population-level incidence and change the trajectory of the HIV epidemic over the long term.