gebhart/patrepeval huggingface dataset:
Automatic video object segmentation via Voronoi ordering and surface optimization (1999)

We combine two theoretical concepts, Voronoi ordering and surface optimization formulation, to form a system for automatic video object segmentation in support of the MPEG-4 standard. Voronoi ordering is a means of projecting the object shape onto the image space; the surface optimization formulation provides a fitness measure for object boundaries in the video sequence. By simultaneously maintaining an invariant Voronoi ordering and maximizing the surface optimization metric, we can automatically extract video object planes. This paper outlines the theoretical aspects of Voronoi ordering and the formulation of video object segmentation as a surface optimization problem. Results from a direct implementation of this theory are shown for three MPEG-4 test sequences (container, coastguard and hallmonitor).
Sustainability and Depletion Accounting for Non-Renewable Resources: The Case of Copper in Chile (2015)

<p class="1Body">This research develops a framework for assessing just compensation values for mining projects, where they might contribute toward a responsible, profitable, and sustainable path to economic growth and development. More specifically, it deals with methods to determine a “sustainable” rate of mineral extraction, putting a dollar value on the environmental impacts from various levels of mineral extraction. The project focuses on an emerging political economy (Chile) and uses an interdisciplinary approach. The approach rests on the assumption that the policy objectives of environmental protection and sustainable economic development can be subsumed into the “Hartwick rule” goal of investing mining rents in natural, social, and infrastructure capital. This study aids in policy decisions relating to benefit transfer to local/regional infrastructure investment.</p>
Prediction of Rebleeding in Peptic Ulcers by Visual Stigmata and Endoscopic Doppler Ultrasound Criteria (1990)

Following peptic ulcer hemorrhage, the ability to accurately determine those patients at highest risk of rebleeding relies on clinical and endoscopic criteria which are accurate in only a variable proportion of cases. In this study we have assessed prediction of rebleeding in peptic ulcers using a transendoscopic vascular detector (TVD) to compare the presence of a positive Doppler signal in relation to an ulcer base with visual stigmata of recent hemorrhage (SRH). Of 711 patients endoscoped for upper GI hemorrhage over an 18-month period 180 (25%) were found to have a peptic ulcer. One hundred and twenty-four had either minor or no SRH at the time of endoscopy, and none of these patients rebled. Fifty-six patients had a single peptic ulcer with either active hemorrhage, a visible vessel or adherent clot, and 22 were entered into the trial. Overall, 9 patients (41%) in this group rebled. Considering prediction of rebleeding, visible vessels had a sensitivity of 89% and specificity of 92% compared with a positive Doppler signal sensitivity of 87% and specificity of 86%. These results suggest that the TVD can predict rebleeding in peptic ulcers with an accuracy similar to that of endoscopic identification of a visible vessel.
A 60 GHz integrated antenna array for high-speed digital beamforming applications (2003)

A 60 GHz integrated four-element planar antenna array is developed. Each antenna is integrated with a sub-harmonic I/Q mixer based on APDPs for the convenience of high-speed signal processing such as adaptive beamforming. An average conversion loss of four channels of less than 10.6 dB is achieved. Amplitude imbalance and phase deviation between I and Q outputs of each channel are less than 2.5 dB and 7/spl deg/, respectively. The array is used to construct a digital beamforming system along with an IF circuit block and DSP modules. Beam scanning results are successfully demonstrated.
Direct Control of Displacement Using Displacement and Resistance Force Contribution Factor (2005)

The paper presents a direct method for the diplacement control and stiffness redesign using displacement and response force contribution factors. At first, these two kinds of factors are derived and the relationship between them is examined. An equation to evaluate the change of displacement according to the change of each member stiffness is proposed. For the statically determinate structures, the proposed equation gives the exact solution with no approximation. But it has some error in case of statically indeterminate structures because the redistribution of response forces is neglected in the equation. However, the equation may be very useful even for statically indeterminate structures because it provides the relationship between the member stiffness and the global displacement. The proposed method is expected to be useful for the displacement control of large space or hi-rise building structures where the stiffness design governs the design result.
Exchange rates and domestic inflation : a study of price/wage inflation in eight Latin American countries, 1946-85 (1987)

The paper deals with the (nominal) short-run dynamics of prices, wages and exchange rates between 1946 and 1985, in Argentina, Brazil, Chile, Colombia, Mexico, Peru, Uruguay and Venezuela. In particular it analyzes the direction and strength of the causal links between domestic price/wage rises and exchange rate changes. The main finding is that there is a semi-dynamic causal relationship: price/wage inflation does generate exchange rate changes, and exchange rate changes also have an effect on price/wage inflation. However, this effect is of very short duration, lasting only one or two quarters. Furthermore, the inflation does not rise sufficiently to eliminate the real effects of the devaluation.
Automatic virtual metrology system design and implementation (2008)

An automatic virtual metrology (AVM) system that consists of a model-creation server and many AVM servers is proposed. The model-creation server will generate the first set of data quality evaluation models and virtual metrology (VM) conjecture models of a certain equipment type. Under fab-wide VM deployment, the model-creation server can also fan out the first set of models generated to all the AVM servers of the same equipment type. Also, each individual fan-out-accepter’s AVM server can perform an automatic model refreshing process to promptly refresh its own data quality evaluation models and VM conjecture models. As such, the VM accuracy can be maintained and the AVM server is then ready to serve. This paper gives an overview to the AVM system and elaborates the automatic data quality evaluation schemes and the automatic model refreshing schemes.
Successful treatment of meningitis caused by highly-penicillin-resistant Streptococcus mitis in a leukemic child. (2002)

In recent years, viridans streptococci have been reported with increasing frequency to cause infections in neutropenic cancer patients. Streptococcus mitis, one of the species included among viridans streptococci, is the most resistant to beta-lactam antibiotics in this group. Bacterial meningitis presenting without pleocytosis in the cerebrospinal fluid (CSF) is rare, and this situation could be confusing to physicians. It is also an uncommon infectious complication in leukemic patients with neutropenia. In patients with leukopenia caused by myelosuppression after chemotherapy, bacterial meningitis must be considered a possibility when a patient develops meningeal signs, even if no pleocytosis is found in the CSF. We report on a 6-year-old boy with leukemia and neutropenia who developed sepsis and meningitis caused by S. mitis with high-level resistance to penicillin and cephalosporins (MIC of both, >2 mg/l); he was a long-term survivor receiving chronic trimethoprim-sulfamethoxazole prophylaxis. The patient was successfully treated with a combination of vancomycin, ceftriaxone, and granulocyte-colony-stimulating factor.
The Effects of Bilateral Arm Training on Motor Control and Functional Performance in Chronic Stroke: A Randomized Controlled Study (2009)

Relative to CI, BAT improved the spatiotemporal control of the affected arm in both bilateral and unilateral tasks, decreased online corrections to perform bilateral tasks, and reduced motor impairment. These findings support the use of BAT to improve motor control and motor function of the affected upper limb in stroke patients.
Research of Petroleum Well Fuel Pump Measurement &amp; Control System Based on Internet of Things Technology (2017)

In order to realize remote automatic measurement and control of all petroleum well fuel pumps which are located in different regions of the crude oil production enterprises, this paper discusses and designs a petroleum well fuel pump measurement & control system based on internet of things technology. The measurement & control system uses a three-tier (perception layer, network layer and application control layer) form of the IOT (Internet of Things) structure, and then the function and feature of all layers are analyzed. As a focus, the hardware components and the control theory of the sensor instrument node and the aggregation instrument node, which are existed in the measurement & control system, are given and discussed also. In the end, programming flow chart of the node microcontroller and main design software module content of the IOT center computer are depicted and proposed. The enterprise experiment result shows that the system has the advantages of easy operation and maintenance, low labor intensity, high time efficiency of measurement & control and high precision with the traditional manual inspection methods of the petroleum well fuel pump to compare.
Identifying Plastic Encapsulant Materials by Pyrolysis Infrared Spectrophotometry (1998)

Abstract Most semiconductor devices are sealed in plastic. Virtually all plastic encapsulated microcircuits (PEMs) look alike. The particular electronic molding compound (EMC) used to encapsulate a device cannot be known except from production records or firsthand knowledge of people familiar with the device. For a variety of reasons, an EMC may need to be explicitly identified. Pyrolysis of the EMC, followed by Fourier Transform Infrared (FT-IR) chemical analysis of the condensates of organic substances evolved by the pyrolysis, and comparison of the spectra with a reference library of known EMCs, provides a rapid means of specific EMC identification.
376. Structural chemistry of the alkoxides. Part I. Amyloxides of silicon, titanium, and zirconium (1952)

D. C. Bradley, R. C. Mehrotra and W. Wardlaw, J. Chem. Soc., 1952, 2027 DOI: 10.1039/JR9520002027
Vernal keratoconjunctivitis: a major review (2008)

Vernal keratoconjunctivitis (VKC) is a chronic, bilateral, at times asymmetrical, seasonally exacerbated, allergic inflammation of the ocular surface, involving tarsal and/or bulbar conjunctiva. Though the allergic nature of this entity has been accepted for a long time, the accumulation of a large amount of immunological data has proved that the pathogenesis of VKC is much more complex than a mere type 1 hypersensitivity reaction. In the past several years, many clinical and experimental studies about the cells and mediators involved in initiating and perpetuating the ocular allergic inflammation have shown that T helper type 2 cells and their cytokines, corneal fibroblasts and epithelium along with various growth factors play an important role in the pathogenesis of VKC. Based on this information about the pathogenesis of VKC newer, more selective drugs like anti-chemokine receptor antibodies and leukotriene receptor antagonists are under evaluation. Cyclosporine has been shown to be effective in the treatment of VKC but further randomized control trials are required to establish the minimum effective concentration.
The Rejection of Large CW Interferers in Spread Spectrum Systems (1978)

An electronic CW interference rejection technique for spread spectrum systems is presented and analyzed. Analytical results indicate that essentially complete rejection is achieved. More conservative examination of performance indicates performance comparable to a notched filter implementation but with the greater flexibility of a narrowband tracking loop implementation.
Horizontal Chromatography Accelerating Apparatus. Description of Apparatus and Applications. (1962)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHorizontal Chromatography Accelerating Apparatus. Description of Apparatus and Applications.J. F. Herndon, H. E. Appert, J. C. Touchstone, and C. N. DavisCite this: Anal. Chem. 1962, 34, 9, 1061–1064Publication Date (Print):August 1, 1962Publication History Published online1 May 2002Published inissue 1 August 1962https://pubs.acs.org/doi/10.1021/ac60189a008https://doi.org/10.1021/ac60189a008research-articleACS PublicationsRequest reuse permissionsArticle Views36Altmetric-Citations13LEARN 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
구주피나무꽃에 있어서의 꿀벌의 수밀활동에 관한 연구 (1) (1987)

1986년도, 구주피나무(Tilia kiusiana Makino et Shiras)의 개화기간(7월 12~28일)에, 꿀벌과 야생방화곤충의 일주활동을 조사하여 그들 일주활동과 기상조건(온도, 습도, 강우, 풍속, 일사량)과의 상관을 조사, 검토하여 다음과 같은 결과를 얻었다.
1. 개화초기(7월 12일)와 개화말기(7월 23일이후)에는 꿀벌의 방화에 비하여 오히려 야생방화곤충의 방화활동의 비율이 높았으나 그밖의 시기(7월 13일~23일)에는 꿀벌의 방화비율이 높았다. 조사된 꿀벌의 총개체 수는 11,574마리였고 야생방화곤충의 총개체 수는 5,689마리였으며, 그들의 비율은 67 : 33이었다.
2. 꿀벌의 방화수는 7월 13~18일(6일간) 조사에서 많았으나 그 이후에는 급격히 감소하였으며, 꿀벌의 최대 방화일은 1,649마리로서 7월 15일(개화후 5일)이었다.
3. 꿀벌의 일주활동과 야생방화곤충의 일주활동 범위(05~20시)는 거의 일치하였으며 그들의 일주활동에서도 대체적으로 일치하였다.
4. 꿀벌의 일주활동 피크는 오전, 오후 2회 나타나는데 오전의 피크는 11시경에, 오후의 피크는 16시경에 나타났다.
5. 꿀벌의 일주활동은 온도(℃), 일사량(Mj/m^2/h), 상대습도(%)와는 고도로 유의한 음(-)의 상관을 나타내었다. 꿀벌의 일주활동과 각각의 기상요인과의 상관계수는 r=+0.644(온도), r=+0.814(일사량), r=-0.624(상대습도)였다.
6. 꿀벌의 일주활동과 강우, 풍속과는 만족할만한 상관관계를 구할 수 없었다.
Design of a 200V super junction MOSFET with n-buffer regions and its fabrication by trench filling (2004)

A new super junction trench MOSFET, which has n-buffer regions between trench gates and n columns, was designed and demonstrated. In this structure, the specific on-resistance (R/sub ON/) does not increase as long as the trench gate bottom is covered with the n buffer, even though the gate position shifts from the designed one. The drift region, consisting of p/n columns in the structure, were formed by a trench filling epitaxial method. The fabricated SJ-MOSFET with a fine cell pitch of 4 /spl mu/m showed an RON of 2.3 n/spl Omega/.cm/sup 2/ at a breakdown voltage (V/sub BR/) of 203 V. The R/sub on/ is 35% lower than that of the silicon limit.
Interaction between leucocytes and human spermatozoa influencing reactive oxygen intermediates release (2004)

The relationship between the presence of white blood cells (WBCs) and the fertilizing potential of human semen is still an open question. It is well known that the presence of leucocytes in human semen can be related to the production of reactive oxygen intermediates (ROI). Semen samples were obtained from 15 normozoospermic men and leucocytes were isolated from heparinized blood drawn from 15 volunteers. Lucigenin and luminol-mediated chemiluminescence assays were used to determine reactive oxygen species (ROS) generation by non-activated or activated leucocytes through 12-myristate-13-acetate or N-formyl-methionyl-leucyl-phenyalanine (FMLP) before the addition of spermatozoa isolated by swim-up or Percoll procedures. All spermatozoal fractions used in this study were characterized by defining their motility, morphology and viability. The levels of ROS formation by non-activated as well as stimulated leucocytes were significantly decreased after addition of swim-up separated spermatozoa (p < 0.01). The ability to inhibit the basal chemiluminescence was of lower degree for spermatozoa isolated from 90% Percoll fractions than for swim-up sperm. However, addition of sperm cells from 47% Percoll fraction was found to increase both lucigenin and luminol signals. Moreover, the determined ROI levels changed depending on the type of inducing factor used for oxidative burst. Then, spermatozoa selected by swim-up procedure although with only slightly higher viability and morphology than sperm obtained from 90% Percoll fraction clearly exhibited much higher capacity to inhibit ROI secretion by receptor-stimulated leucocytes (FMLP-activation) than Percoll fractionated sperm. Such results may indicate that within normal semen may exist sperm subpopulations with different biochemical mechanisms controlling the interaction between spermatozoa and contaminating leucocytes. When ROI levels contained in normozoospermic semen are dependent on the WBCs activation, it seems that spermatozoa with preserved normal functional competence are able to defend themselves against leucocytes-derived ROI. Also for normozoospermic ejaculates, swim-up sperm may improve semen antioxidant characteristics when comparing with Percoll (90%) separated sperm. It may help for optimal sperm preparation when assisting to infertility treatment.
Practical Stability in Swarms System (2008)

Practical stability is a significant practical importance in scientific and engineering problems but less investigated. In this paper, we studied practical stability in swarms system and present new results.
Design of real time sensor system for detection and processing of seismic waves for earthquake early warning system (2015)

Earthquake is one of the major natural calamity. So prediction of the reach of earthquake event to the various locations could result in minimizing the disaster due to it. An early warning system for earthquake mainly issues an alarm to have a time margin for evacuating peoples to the safe place or shutting down key facilities like major industrial work etc. to avoid major consequences [1]. This paper contains the design of sensor system and the techniques used for detection and processing of the received signals in real time. The main difference between our method and conventional methods of earthquake location tracking is addition of two planer Azimuth angle. Conventionally the distance triangulation method is used for tracking the earthquake location. But this method is not much accurate since it considers the average speeds of the P and S waves. Speed of seismic waves varies immensely depending upon type of soil, rocks or water etc. below the earth surface. The addition of using the two planer Azimuth angle gives 3-dimensional angle of incoming seismic waves at the sensor system. So using two planer Azimuth angle along with distance triangulation method we can track location of earthquake more accurately by using at least three sensors data.
The irritable bowel syndrome and food hypersensitivity. (1988)

Ten patients with irritable bowel syndrome were evaluated for food hypersensitivity with skin testing (IgE) and IgG serum antibodies (RAST panel) to common food antigens. Patients also underwent an open elimination diet for 2 weeks followed by a 48-hour challenge of each food that was considered to be suspicious from patients diary, positive skin prick test, and/or positive IgG antibodies. Six patients had positive skin scratch test results and only one patient had RAST IgG food antibodies greater than 3,000 cpm which is a marked increase above normal. None of the patients however had an exacerbation of their irritable bowel symptoms with a food challenge. We conclude therefore that positive skin testing and IgG serum antibodies are not reliable indicators of food hypersensitivity in irritable bowel syndrome and that food hypersensitivity does not seem to play a role in the symptoms related to the irritable bowel syndrome.
Perivascular lymphocytic cuffing in astrocytomas. (1976)

A series of cases of astrocytoma of differing cell composition and degree of malignancy was examined for the presence of reactive perivascular cuffing. Only surgical biopsy material was used. A correlation was made between perivascular lymphocyte cuffing and the presence of neoplastic astrocytes of the gemistocytic type.
Geopolymerization of Copper Mine Tailings (2012)

Geopolymerization is a chemical reaction process, reacting SiO₂ and Al₂O₃ with alkaline solutions, which can transform aluminosilicate solids or particles to polymer materials. Geopolymers have many engineering applications such as cementation binders for construction and solidification or encapsulation of hazardous heavy metals. Mine tailings mainly consist of SiO₂ and Al₂O₃. Theoretically, mine tailings can be used as source materials for geopolymerization. However, for most researchers, they use fly ash, metakaolin or furnace slag as source minerals, because these minerals are much more reactive with alkaline solutions. Mine tailings are naturally-forming minerals and are considered to be inert in geopolymerization. How are mine tailings to be activated through different reaction conditions? We conducted several tentative or preliminary experiments to study the geopolymerization process step by step. We tried different methods to react mine tailings with alkaline solutions. Mine tailings were submerged into alkaline solutions in a plastic bucket for 6 days in room temperature (20-25 °C). We wanted mine tailings to be activated by soaking. The results were not satisfying. Then we tried to react mine tailings with alkaline solutions at 60 °C and 90 °C. After analyzing, we found that the results were not satisfying either. So, we conducted simplified geopolymerization experiments in order to better understand the chemical reaction mechanism. Pure SiO2 and Al2O3, which were two major reactants, were employed to simplify and simulate the geopolymerization process. We drew some useful conclusions such as that geopolymerization took place at elevated temperatures; Al₂O₃ almost did not react with alkaline solutions at low temperatures, etc. We conducted experiments at elevated temperatures (150 °C, 180 °C, 210 °C). Different levels of pressure (5 MPa, 10 MPa, 20 MPa) were applied to make compact specimens. After many attempts, the results were successful. The highest mechanical strength was about 20 MPa. Most importantly, we obtained polymers produced from geopolymerzation, which could be seen by naked eyes. The experiment techniques such as scanning electron microstructure (SEM) imaging and X-ray diffraction (XRD), inductively-coupled plasma mass spectrometry (ICP-MS), and unconfined compression tests (UCS) were applied to study the geopolymerization reaction mechanism and the feasibility of using mine tailing-based geopolymers as construction materials.