gebhart/patrepeval huggingface dataset:
Heart-Rate Monitoring Using Single Camera (2017)

<div class="section abstract"><div class="htmlview paragraph">Heart rate is one of the most important biological features for health information. Most of the state-of-the-art heart rate monitoring systems rely on contact technologies that require physical contact with the user. In this paper, we discuss a proof-of-concept of a non-contact technology based on a single camera to measure the user’s heart rate in real time. The algorithm estimates the heart rate based on facial color changes. The input is a series of video frames with the automatically detected face of the user. A Gaussian pyramid spatial filter is applied to the inputs to obtain a down-sampled high signal-to-noise ratio images. A temporal Fourier transform is applied to the video to get the signal spectrum. Next, a temporal band-pass filter is applied to the transformed signal in the frequency domain to extract the frequency band of heart beats. We then used the dominant frequency in the Fourier domain to find the heart rate. Further, an inverse Fourier transform is used on the spectrum to convert the signal back to the time domain. After scaling, the amplified signal is added to the input image to magnify the subtle facial color change that is caused by the heartbeat. We implement on an iPhone 5s using the front facing camera and obtaining a 1.4 beats per minute error when compared to a standard portable heart rate monitor.</div></div>
Microcircuit Modification Using Focused Ion Beams (1988)

Focused-ion-beam (FIB) microcircuit modification is a maturing technology which provides an accurate method of modifying the metal levels of an in-process or completed integrated circuit. New FIB processes are being developed which facilitate submicrometer conductor disconnects and conductor creation. We present a description of the key elements of an FIB system designed for this application and provide results of the machine's operation.
Computational screening of combinatorial catalyst librariesElectronic supplementary information (ESI) available: predicted and observed e.e. values for the 88 catalysts in the library; full CoMFA parameters; aligned molecular coordinates. See http://www.rsc.org/suppdata/cc/b4/b402378a/ (2004)

A catalyst design methodology, utilizing combinatorial synthesis in parallel with chemometric analysis, is presented, which considers the 3D steric and electrostatic properties of substituents about a constant core structure.
Matching of mass spectra when peak height is encoded to one bit (1970)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMatching of mass spectra when peak height is encoded to one bitStanley L. GrotchCite this: Anal. Chem. 1970, 42, 11, 1214–1222Publication Date (Print):September 1, 1970Publication History Published online1 May 2002Published inissue 1 September 1970https://pubs.acs.org/doi/10.1021/ac60293a007https://doi.org/10.1021/ac60293a007research-articleACS PublicationsRequest reuse permissionsArticle Views114Altmetric-Citations60LEARN 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 Get e-Alerts
SUNLITE program. Sub-Hertz relative frequency stabilization of two diode laser pumped Nd:YAG lasers locked to a Fabry-Perot interferometer (1990)

Two laser pumped Nd:YAG lasers were frequency stabilized to a commercial 6.327 GHz free spectral range Fabry-Perot interferometer yielding a best case beatnote linewidth of 330 MHz. In addition, a Fabry-Perot interferometer with a free spectral range of 680 MHz, a linewidth of 25 kHz, and a finesse of 27,500 was built, and when it was substituted in place of the commercial interferometer, it produced a robust and easily repeatable beatnote linewidth of 700 MHz.
Quantification of Facial Surface Change Using a Structured Light Scanner (1994)

Three-dimensional surface changes that accompany facial surgical procedures were measured noninvasively and evaluated quantitatively. An optical three-dimensional surface scanner with 360-degree surface coverage of a subject's head and a subsecond data acquisition was used. The scanner employs six pairs of "white light" pattern projectors and digital TV cameras. A noncontact optical method to quantify facial surface morphology and objectively assess change resulting from reconstructive or cosmetic plastic surgery has been developed. This quantification technique was implemented and tested with the three-dimensional range scanner. This technique defines the entire surface of the head and face, as opposed to the conventional manual method of measuring surface points or facial landmarks. The method allows facial volume change assessment. The method was tested by repeatedly scanning a volunteer who was injected subcutaneously with known volumes of anesthetic solution. The measured and injected volumes were compared and showed little difference.
CRTDH: an efficient key agreement scheme for secure group communications in wireless ad hoc networks (2005)

As a result of the growing popularity of wireless networks, in particular ad hoc networks, security over such networks has become very important. In this paper, we study the problem of secure group communications (SGC) and key management over ad hoc networks. We identify the key features of any SGC protocol for such networks. We also propose an efficient key agreement scheme for SGC. The scheme solves two important problems that exist in most current SGC schemes: requirement of member serialization and existence of a central entity. Besides this, the protocol also has many highly desirable properties such as contributory and efficient computation of group key, uniform work load for all the members, few rounds of rekeying (2 rounds for the initial key formation and join and 1 round for leave), and efficient support for high dynamics. These properties make the protocol well suited for wireless ad hoc networks.
Stabilization of the tetramethylbenzidine (TMB) reaction product: application for retrograde and anterograde tracing, and combination with immunohistochemistry. (1984)

Tetramethylbenzidine (TMB) as a substrate for horseradish peroxidase (HRP) histochemistry is more sensitive than other chromogens. Its instability in aqueous solutions and ethanol, however, has limited its application. We now report a method for stabilizing TMB by incubation in combinations of diaminobenzidine (DAB)/cobalt (Co2+)/H2O2. The stabilized TMB product was unaffected by long-term exposures to ethanol, neutral buffers, and subsequent immunohistochemical staining procedures. A procedure is recommended for optimal stabilization of TMB that affords a sensitivity for demonstrating retrogradely labeled perikarya comparable to standard TMB histochemistry. The physical characteristics of the reaction product make it suitable for combination with the unlabeled antibody, peroxidase-antiperoxidase (PAP) immunohistochemical staining procedure. This was established by staining retrogradely labeled neurons in the basal forebrain with a monoclonal antibody against choline acetyltransferase. Because the stabilized TMB product exhibited a superior sensitivity over cobalt ion intensification of the DAB-based reaction product (DAB-Co), it offers a distinct advantage over previously described combination procedures.
Interlocking Feedback Loops Govern the Dynamic Behavior of the Floral Transition in<i>Arabidopsis</i>    (2013)

During flowering, primordia on the flanks of the shoot apical meristem are specified to form flowers instead of leaves. Like many plants, Arabidopsis thaliana integrates environmental and endogenous signals to control the timing of reproduction. To study the underlying regulatory logic of the floral transition, we used a combination of modeling and experiments to define a core gene regulatory network. We show that FLOWERING LOCUS T (FT) and TERMINAL FLOWER1 (TFL1) act through FD and FD PARALOG to regulate the transition. The major floral meristem identity gene LEAFY (LFY) directly activates FD, creating a positive feedback loop. This network predicts flowering behavior for different genotypes and displays key properties of the floral transition, such as signal integration and irreversibility. Furthermore, modeling suggests that the control of TFL1 is important to flexibly counterbalance incoming FT signals, allowing a pool of undifferentiated cells to be maintained despite strong differentiation signals in nearby cells. This regulatory system requires TFL1 expression to rise in proportion to the strength of the floral inductive signal. In this network, low initial levels of LFY or TFL1 expression are sufficient to tip the system into either a stable flowering or vegetative state upon floral induction.
Quality Childcare and Joint Attention (1999)

Abstract This study examined the experiences of infants and toddlers in New Zealand child care centres to evaluate whether they provided opportunities for learning in the context of shared attention. One hundred childcare centres througough New Zealand comprised the centre sample. Running records were carried out on 200 under 2‐year‐old children (99 boys and 101 girls, two children from each centre) for 20 minutes each. Two hundred and thirty six episodes of sustained joint attention were observed during running records, most commonly during object/toy related play, but also at a relatively high level during caregiving routines, book/picture related activities, messy creative activities and large motor play. A third of all children in the study participated in no joint attention episodes at all. Just over half (51.3%) of episodes were child‐initiated and just under half were adult‐initiated. Centres with no joint attention episodes scored significantly lower on the Assessment Profile Infant Score and centres with smaller group sizes and some Diploma level trained staff had more episodes of joint attention. Qualitative data provided evidence of staff sensitivity and responsiveness, close relationships between staff and children, reciprocity between staff and child, the central importance of language and shared meaning and the richness of joint attention episodes as a context for learning.
The Human/Land Dialectic (1997)

Essay| October 01 1997 The Human/Land Dialectic: Anthropic Landscapes of the Center for Land use Interpretation Kate L. Haug Kate L. Haug Kate L. Haug is a West Coast curator, critic and filmmaker who is currently completing Femme Experimental: Sexually Explicit Images by Women and Avant-garde Film, an interview project with filmmakers Carolee Schneemann, Barbara Hammer and Chick Strand. Search for other works by this author on: This Site PubMed Google Scholar Afterimage (1997) 25 (2): 3–5. https://doi.org/10.1525/aft.1997.25.2.3 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter LinkedIn Tools Icon Tools Get Permissions Cite Icon Cite Search Site Citation Kate L. Haug; The Human/Land Dialectic: Anthropic Landscapes of the Center for Land use Interpretation. Afterimage 1 October 1997; 25 (2): 3–5. doi: https://doi.org/10.1525/aft.1997.25.2.3 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 ContentAfterimage Search This content is only available via PDF. © 1997 by The Regents of the University of California1997 Article PDF first page preview Close Modal You do not currently have access to this content.
Cooperativity of HIV-Specific Cytolytic CD4 T Cells and CD8 T Cells in Control of HIV Viremia (2015)

The ability of the immune system to control chronic HIV infection is of critical interest to both vaccine design and therapeutic approaches. Much research has focused on the effect of the ability of CD8+ T cells to control the virus, while CD4+ T cells have been overlooked as effectors in HIV control due to the fact that they are preferentially infected. We show here that a subset of HIV-specific CD4+ T cells cooperate in the cytolytic control of HIV replication. Moreover, these cells represent a distinct subset of CD4+ T cells showing significant transcriptional and phenotypic differences compared to HIV-specific Th1 cells but with similarities to CD8+ T cells. These findings are important for our understanding of HIV immunopathology.
Genes for Hair and Avian Keratins (1985)

This paper briefly reviews the present level of understanding of the genes that code for hair keratins and the keratins of avian feather and scale. The emphasis to date has been on the structure of the genes, the derivation of amino acid sequences for several of the proteins from the coding sequences, and the organization of the different gene families within genomic DNA. Genomic sequences for the proteins of the three main gene families for wool keratin have been isolated from sheep genomic libraries and their detailed analysis by DNA sequencing is proceeding. Already, representative sequences for the genes of the microfibril (alpha-filament or IF) proteins and for the cysteine-rich and HGT matrix proteins are available. With these sequences as sources of probes, it is now possible to move from organizational and structural studies and undertake the study of the control of the expression of these genes either in wool (hair) follicles in vivo or after transfection with specific keratin genes of suitable epidermal cells in culture. Parallel with these studies is the investigation of the fate of trichohyalin droplets in the inner root sheath during its maturation, which is coordinated with keratinization in the hair itself. These unusual proteins and the changes they undergo suggest a highly specific function. The discovery of that function might come from the use of molecular cloning techniques especially for the synthesis of quantities of protein adequate for study. The avian keratins of feather and scale are coded for by a large family of evolutionarily related genes as shown in recent investigations of the DNA sequences. Again, derived protein sequences have provided a view of the feather and scale structures previously unavailable. Information on the fine structure of the genes is enabling the examination of their expression in vivo during embryonic development and the possible significance in this development of the histidine-rich ("fast") protein. The lack of any detectable transcripts from characterized feather keratin genes injected into Xenopus oocytes is presenting the possibility of testing for tissue-specific protein factors that might be responsible for the specific activation of keratin genes.
Ubiquitous content formulations for real‐time information communications (2008)

Purpose With rapid advances in wireless portable devices, ubiquitous computing seems becoming a reality everyday. The paper aims to explore the possibility of offering real‐time content adaptation on set of data streams using the active pervasive network infrastructure. Design/methodology/approach With different relative importance among the data sets, traffic control and discrimination with different operations on content adaptation are examined. Piggyback extension to users' preferences messages is proposed to smoothly enhance the active pervasive network infrastructure design. Findings Content adaptation is achieved transparently to both clients and server systems. Real‐time delivery services overcome stochastic network situations and abruptly changing bottleneck link bandwidth problem while retaining information integrity and preserving critical data at the best of the limit of an environment. Originality/value The paper explores real‐time content adaptation on data streams using the active pervasive network infrastructure.
Low-Loss Waveguide Transmission (1953)

The circular electric mode in round metallic tubing becomes increasingly more attractive than the dominant mode from the standpoint of minimzing the waveguide size at frequencies above about 10,000 mc for the loss criterion of 0.25 db/100 feet. The circular electric (TE <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">01</sub> ) mode also makes available a theoretical heat loss of 2 db/mile in waveguides less than 6 inches in diameter at frequencies higher than about 5,500 mc. Increased transmission bandwidth, reduced delay distortion, and reduced waveguide size are factors favoring use of the highest practical frequency of operation. An increased number of freely propagating modes and smaller mechanical tolerances are the associated penalties. Experimental work has been carried out in the 9,000-mc region using the TE <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">01</sub> mode in a pipe about 5 inches in diameter. Transmission of 0.1-μsec pulses has been observed over a distance of 40 miles. Mode conversion and surface roughness of the tubing walls result in observed losses which average about 50 per cent higher than the theoretical values for geometrically perfect, smooth-walled tubing. There is included a brief discussion of several problems unique to transmission in a multimode medium, including pure mode generation, mode filtering, the bend problem, and the effects of mode conversion on transmission loss and signal fidelity.
Phase II Trial of Ixabepilone As Second-Line Treatment in Advanced Endometrial Cancer: Gynecologic Oncology Group Trial 129-P (2009)

PURPOSE A phase II study was conducted to determine the response rate of ixabepilone (BMS-247550, National Cancer Institute (NCI)-supplied agent investigational new drug No. 59,699) in patients with persistent or recurrent endometrial cancer who have progressed despite standard therapy. PATIENTS AND METHODS Eligible patients had recurrent or persistent endometrial cancer and measurable disease. One prior chemotherapeutic regimen, which could have included either paclitaxel or docetaxel, was allowed. Patients received ixabepilone 40 mg/m(2) as a 3-hour infusion on day 1 of a 21-day cycle. Treatment was continued until disease progression or until unacceptable toxicity occurred. Results Fifty-two patients were entered on the study, and 50 of these were eligible. The median age was 64 years (range, 40 to 83 years). Prior treatment included radiation in 21 patients (42%) and hormonal therapy in eight patients (16%). All patients had prior chemotherapy, and 47 (94%) received prior paclitaxel therapy. The overall response rate was 12%; one patient achieved a complete remission (2%), and five achieved partial remission (10%). Stable disease for at least 8 weeks was noted in 30 patients (60%). The median progression-free survival (PFS) was 2.9 months, and the 6-month PFS was 20%. Major grade 3 toxicities were neutropenia (52%), leukopenia (48%), gastrointestinal (24%), neurologic (18%), constitutional (20%), infection (16%), and anemia (14%). CONCLUSION In a cohort of women with advanced or recurrent endometrial cancer who were previously treated with paclitaxel, ixabepilone showed modest activity of limited duration as a second-line agent.
Investigation into Single Scattering Properties of Airborne Saharan Dust Particles (2008)

The phase functions of single mineral dust particles levitated in an electrodynamic balance have been measured. Normalized phase functions and the asymmetry parameter could be determined because nearly the full range of scattering angles was available: 0.5° to 177°. The particles have been characterized using microscopy.
Delayed Presentation of 50 Years after a World War II Vascular Injury with Intraoperative Localization by Duplex Ultrasound of a Traumatic False Aneurysm (1997)

A case of delayed presentation of a traumatic false aneurysm in the left arm 50 years after penetrating injury sustained during World War II is described. The original injury resulted in brachial artery occlusion and complete median nerve palsy. The false aneurysm presented with a spontaneous, contained rupture. Surgical repair was performed after duplex ultrasound localization of the lesion to a small collateral artery lateral to the elbow, thereby avoiding dissection in the densely scarred tissue plains in the antecubital fossa. Duplex ultrasound was also used intraoperatively to facilitate localization of the aneurysm neck and to confirm absence of flow in the sac after repair. A brief historical review of traumatic false aneurysms caused by combat injuries, is provided. The progress in the treatment of such injuries gained by wartime experience is reviewed.
Mark's Christological Paradox (1989)

Marc 15 : 39 represente une cle pour comprendre la christologie de l'evangeliste. Le centurion annonce la vraie identite de Jesus, fils de Dieu, qui resout la dichotomie entre l'humain et le divin
Activity Discovery and Activity Recognition: A New Partnership (2012)

Activity recognition has received increasing attention from the machine learning community. Of particular interest is the ability to recognize activities in real time from streaming data, but this presents a number of challenges not faced by traditional offline approaches. Among these challenges is handling the large amount of data that does not belong to a predefined class. In this paper, we describe a method by which activity discovery can be used to identify behavioral patterns in observational data. Discovering patterns in the data that does not belong to a predefined class aids in understanding this data and segmenting it into learnable classes. We demonstrate that activity discovery not only sheds light on behavioral patterns, but it can also boost the performance of recognition algorithms. We introduce this partnership between activity discovery and online activity recognition in the context of the CASAS smart home project and validate our approach using CASAS data sets.