scholarly journals Constructing Geographic Dictionary from Streaming Geotagged Tweets

2019 ◽  
Vol 8 (5) ◽  
pp. 216 ◽  
Author(s):  
Jeongwoo Lim ◽  
Naoko Nitta ◽  
Kazuaki Nakamura ◽  
Noboru Babaguchi

Geographic information, such as place names with their latitude and longitude (lat/long), is useful to understand what belongs where. Traditionally, Gazetteers, which are constructed manually by experts, are used as dictionaries containing such geographic information. Recently, since people often post about their current experiences in a short text format to microblogs, their geotagged (tagged with lat/long information) posts are aggregated to automatically construct geographic dictionaries containing more diverse types of information, such as local products and events. Generally, the geotagged posts are collected within a certain time interval. Then, the spatial locality of every word used in the collected geotagged posts is examined to obtain the local words, representing places, events, etc., which are observed at specific locations by the users. However, focusing on a specific time interval limits the diversity and accuracy of the extracted local words. Further, bot accounts in microblogs can largely affect the spatial locality of the words used in their posts. In order to handle such problems, we propose an online method for continuously update the geographic dictionary by adaptively determining suitable time intervals for examining the spatial locality of each word. The proposed method further filters out the geotagged posts from bot accounts based on the content similarity among their posts to improve the quality of extracted local words. The constructed geographic dictionary is compared with different geographic dictionaries constructed by experts, crowdsourcing, and automatically by focusing on a specific time interval to evaluate its quality.

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Senada Hajdarevic ◽  
Åsa Hörnsten ◽  
Elisabet Sundbom ◽  
Ulf Isaksson ◽  
Marcus Schmitt-Egenolf

We aimed to describe and compare patients diagnosed with malignant melanoma (MM), depending on their initial contact with care and with regard to age, sex, and MM type and thickness, and to explore pathways and time intervals (lead times) between clinics from the initial contact to diagnosis and treatment. The sample from northern Sweden was identified via the Swedish melanoma register. Data regarding pathways in health care were retrieved from patient records. In our unselected population of 71 people diagnosed with skin melanoma of SSM and NM types, 75% of patients were primarily treated by primary health-care centres (PHCs). The time interval (delay) from primary excision until registration of the histopathological assessment in the medical records was significantly longer in PHCs than in hospital-based and dermatological clinics (Derm). Thicker tumors were more common in the PHC group. Older patients waited longer times for wide excision. Most MM are excised rapidly at PHCs, but some patients may not be diagnosed and treated in time. Delay of registration of results from histopathological assessments within PHCs seems to be an important issue for future improvement. Exploring shortcomings in MM patients’ clinical pathways is important to improve the quality of care and patient safety.


Author(s):  
Christopher P.F. Marinangeli ◽  
Hrvoje Fabek ◽  
Mavra Ahmed ◽  
Diana Sanchez-Hernandez ◽  
Samara Foisy ◽  
...  

The 2015 Canadian Community Health Survey was used to investigated the protein content and protein quality of the diets consumed by adults (≥ 19 years) when plant protein is increased. Individuals (n=6498) were allocated to quartiles of increasing proportions of protein from plant foods (Q1:0-24.9%; Q2:25%-49.9%; Q3:50-74.9%; Q4:75-100%). The Protein Digestibility Corrected Amino Acid Score (PDCAAS) of diets were estimated using indispensable amino acid concentrations of foods and an assumed digestibility coefficient of 0.8. Corrected protein intakes were determined by aggregating foods consumed over 24hrs and as the sum of corrected protein consumed at eating events within six, four-hour time intervals. Most individuals (51%) consumed 25-49.9% of protein from plant foods. Cereal-based foods represented the majority of plant protein consumed. PDCAAS of diets remained ≥0.87 for Q1-3, but decreased (p<0.0001) to 0.71±0.018 in Q4 vs. Q2 (0.96±0.004). Corrected protein intakes in Q2 (80.66±1.21 g/day; 1.07±0.03 g protein/kg BW) decreased to 37.13±1.88 g/day (0.54±0.03 g/kg BW) in Q4 (p<0.0001). Aggregated daily corrected protein intake strongly correlated (r=0.99; p<0.001) with the sum of corrected protein consumed within time intervals. Intra-time interval analysis revealed that the relative proportions of animal and plant proteins changed at eating events over 24hrs; and did not reflect the allocation to quartiles based on the daily proportion of plant protein consumption. Various tools should be explored and developed to assist Canadians in effectively incorporating plant protein foods into dietary patterns. Novelty: ●Corrected protein intakes decreased as plant protein consumption increased. ●PDCAAS was ≥0.87 for diets with ≤74.9% plant protein.


2007 ◽  
Vol 25 (18_suppl) ◽  
pp. 17010-17010
Author(s):  
G. A. Porter ◽  
J. M. Murdoch ◽  
K. M. Inglis ◽  
P. J. Veugelers

17010 Background: Although recent studies have described timeliness of breast cancer (BC) care and its impact on outcomes, there is little data on patient perception of timeliness. This study examined the association between clinicodemographic factors, timeliness and patient satisfaction for surgically-treated BC patients across defined intervals of diagnosis (Dx) and treatment. Methods: All patients undergoing surgery for primary BC within a single Health District over 24 months were enrolled in a prospective consecutive cohort study. A comprehensive, standardized method of ascertaining specific time intervals, including a patient interview, was used to quantify the timeliness of presentation, Dx and treatment. A validated satisfaction questionnaire was applied to patients 2 weeks after surgery, and following chemotherapy. Multiple linear regression, using the natural logarithm of the time interval as the dependant variable, was performed to examine the association of factors and satisfaction with specific time intervals. Results: Among the 519 patients in the study, 317 (61%) were screen-detected and 202 (39%) presented symptomatically. Complete satisfaction questionnaire responses were obtained in 348 (67%). The median time intervals in days (interquartile range) were: abnormal screen to Dx - 33 (21–48); symptoms to Dx 44 (23–97); Dx to surgery - 31 (22–43); surgery to adjuvant chemotherapy 63 (49–73). On multivariate analysis, the interval from presentation (either abnormal mammogram or symptoms) to Dx was 33% longer for screen-detected patients (p<0.0001) and 38% longer for patients where more than one diagnostic test was performed (p=0.009). Moderate correlation was identified between patient satisfaction and both the intervals from presentation to Dx (r2=0.212;p<0.0001) and from Dx to surgery (r2=0.262;p<0.0001). Controlling for the length of these intervals, younger women (p=0.01) and those with a Dx made via screening (p=0.004) had significantly lower satisfaction scores. Conclusions: The timeliness of care for BC involves several defined components; variations in the relatively short interval from Dx to surgery appeared to have most impact on patient satisfaction. Younger women and those diagnosed via screening were less satisfied with their access to timely care. No significant financial relationships to disclose.


2018 ◽  
Vol 22 ◽  
pp. 01057
Author(s):  
Gökhan GÖKDERE ◽  
Mehmet GÜRCAN

In engineering applications, analyzing a technical system vary according to the operating principles of the system. In some situations, the status of the system is a function of stresses which act on the system and cause degradation. In order to efficiently analysis the reliability of a system which operates under stress, assigning the various states to the components depending on their operating performance is very important. In this paper, we have investigated the linear consecutive k-out-of-n: F system and assigned multiple states to its components. Due to the reason, the operating performance of the components can easily be controlled. Apart from that the reliability of the system depending on the states of its components can be calculated at any time interval. In the numerical example, the states of the components and the reliability calculation of the system at specific time intervals are shown clearly.


2020 ◽  
pp. 1-9
Author(s):  
Nicola Hofmann ◽  
Ilka Wittmershaus ◽  
Anna-Katharina Salz ◽  
Martin Börgel

<b><i>Background:</i></b> The realization of tissue donations is bound to a tight timeframe. Depending on the type of tissue, time limits are specified within which the donation must be procured and processed. Otherwise, there is a risk of tissue quality loss with increasing time intervals from cardiovascular arrest. According to the European Directorate for the Quality of Medicines and HealthCare (EDQM) guide, cornea must be procured and processed within 72 h after death. The question arises whether this time interval has an influence on the quality of transplanted tissues and how it affects the accomplishment of tissue donations. <b><i>Methods:</i></b> In order to obtain information on this, the numbers of tissue donations in the network of the German Society for Tissue Transplantation (DGFG) were evaluated as a function of the death to retrieval time (DRT) as well as the death to preservation time (DPT). For this purpose, 21,454 database entries of cornea donations made in the period from 2014 to 2018 were included. <b><i>Results:</i></b> The results show that nearly 50% of donations realized in the DGFG network could be processed only 48 h or later after cardiovascular death due to the opt-in regulation in Germany. For these donations, there seems to be a higher discard rate compared to donations taken earlier. Nevertheless, there is a transplantation rate for these grafts of more than 65%, which is comparable to average transplantation rates stated in the literature. <b><i>Conclusion:</i></b> All corneas finally selected for transplantation must meet the specified quality parameters. Since this naturally also applies to transplants that could only be procured at later time points, it can be concluded that DPT up to 72 h for corneal tissue is adequate and has no influence on the quality of corneas that are ultimately transplanted.


Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 3000 ◽  
Author(s):  
Hamid Gilvari ◽  
Wiebren De Jong ◽  
Dingena L. Schott

With the recent increase in biomass pellet consumption, the mechanical degradation of pellets during transport and handling has become more important. ISO standard 17831-1 is an accepted global standard that is commonly used amongst researchers and industries to determine the mechanical durability of pellets. However, the measured mechanical durability sometimes fails to match the certificate accompanying the shipment. In such cases, pellet length specifications are suspected to play a role. This paper studies the effect of pellet length on mechanical durability for various types of commercially produced biomass pellets. In addition, the effect of test conditions and torrefaction on the mechanical durability of biomass pellets has been investigated. To study the effect of pellet length, pellets were classified into three groups: shorter than 15 mm, 15 to 30 mm, and longer than 30 mm, and their length distributions were measured using an in-house image processing tool. Then, the mechanical durability of pellets was measured using ISO standard 17831-1. The mechanical durability results were compared to random-sized pellet samples. To study the effect of test conditions, the mechanical durability test was operated at different time intervals to elucidate the effect of tumbling at different conditions. The results show that the mechanical durability depends highly on the length distribution of the pellets, with a difference between categories of up to 13%. It was also observed that the mechanical durability remains relatively constant after a specific time interval. Based on the results, we highly recommend modifying the current ISO standard to account for the pellet length distribution (PLD).


2020 ◽  
Vol 5 (2) ◽  
pp. 52-57
Author(s):  
Tedi Akhdiat ◽  
Hilman Permana ◽  
Nilawat Widjaja ◽  
Raden Febrianto Christi ◽  
Dini Elsa Alfiani

Milking is the act of removing milk from the udder on purpose to get maximum milk production. A reasonable milking interval will affect the amount of milk production. This research aims to know the extent of the milking time interval affecting Friesian Holstein dairy cow milk production and the interval of milking time that produces the best production and quality of Friesian Holstein.  The research method was an experiment using a completely rand randomized with four treatments, namely: treatments 1 was 16:8 hours time delivery interval (TDI) dairy cow; treatments 2: time delivery interval (TDI) 15:9 hours; treatment 3: delivery time interval (TDI) 14:10 hours; treatment 4: time delivery interval (TDI) 13:11 hours.  The observed variables are milk production and milk quality.  The data were analyzed using verbal if any effect of treatment was done Duncan's distance test. Based on the results and discussion, the milking time interval significantly impacts milk production and water content. Still, it has no significant effect on the density, protein content, and milk fat content, 13:11 hours milking interval time produces the most milk and water content.


1961 ◽  
Vol 9 (1) ◽  
pp. 193-209 ◽  
Author(s):  
M. K. Keech

The kinetics of collagen reprecipitation from solutions of salt-extracted calf dermis in the presence of small amounts of mucopolysaccharide and nucleic acids (0.005 per cent in the final reaction mixture) has been reported by Wood (1960). The present paper is a parallel study using the same materials, and describes the electron microscopic (EM) morphology of the collagen precipitates replicated after 24 hours at room temperature. Satisfactory, uncontaminated EM preparations were obtained which showed that all the deposits were fibrous and bore the 640 A cross-banding characteristic of collagen except some narrow, background fibrils 200 to 1000 A wide precipitated in the presence of heparin. These exhibited fine striations about 220 A apart. Chondroitin sulfate greatly increased the rate of precipitation to give a deposit of low optical density consisting of narrow, rigid, discrete fibrils resembling fresh dermis. In contrast, heparin prevented macroscopic gelation, delayed precipitation, and only produced a scanty deposit of abnormal, short, wide, striated tactoids and compound fibers of varying length. The control preparations and the deposits formed in the presence of hyaluronic acid were intermediate between these two extremes. Delayed precipitation was associated with a coarser deposit and aggregation of the fibrils. A duplicate series of deposits precipitated in the presence of RNA and DNA, together with their controls, were examined after ½, 1, 1½, 3, 9, and 24 hours. One set employed an acetic extract of whole calf dermis and the other salt-extracted dermis. The presence of 0.005 per cent DNA in the reaction mixture markedly delayed collagen precipitation with the slow formation of abnormal, short, wide tactoids and compound fibers. RNA also interfered with the quantity and quality of the deposits which contained far less collagen resembling unfixed, normal, adult human dermis, than the controls at the corresponding time intervals. Comparison of the experiments employing whole calf dermis with those employing the salt-extracted material demonstrated that at every time interval in all the experiments the deposits were retarded when salt-extracted dermis was used. This suggests that the salt-soluble components of the dermis play a part in fiber formation.


2019 ◽  
Vol 2 (1) ◽  
pp. 34
Author(s):  
Ilham Budi Susilo

ABSTRACT Demand for mustard in Indonesia continues to increase while the amount of agricultural land per capita in Indonesia is still low. One effort to increase the productivity and quality of an efficient pakcoy can be done with hydroponics. The number of rabbits that are potential to be processed into rabbit urine-based POC. POC rabbit has an uns N content of 2.72%, P 1.1%, K 0.5% higher compared to some cattle dung. Research is needed regarding rabbit urine POC concentrations and appropriate time intervals for pakcoy plants. This research uses RAL method compiled by factorial consisting of 2 factors applied to the pakcoy pakcoy plant which is repeated 3 times. Factor 1 is the concentration of POC rabbits consisting of P0: 0 ml / liter, P1: 10 ml / liter, P2: 15 ml / liter, P3: 20 ml / liter. Factor 2 is the time interval for rabbit POC administration consisting of W1: 4 days, W2: 5 days, W3: 6 days. The best concentration was the POC concentration of 20 ml / l and the time interval was once every 6 days with an average fresh weight of 190.67 g / plant canopy. Keywords : Pakcoy, Liquid Organic Fertilizer rabbit, concentration, interval tume, hydroponic. ABSTRAK Permintaan sawi di Indonesia terus mengalami peningkatan sedangkan jumlah luas lahan pertanian perkapita di Indonesia masih rendah. Salah satu usaha peningkatan produktivitas dan kualitas pakcoy yang efisien dapat dilakukan dengan hidroponik. Jumlah kelinci yang banyak menjadi potensi untuk diolah menjadi POC berbasis urin kelinci. POC kelinci memiliki kandungan unsur N 2.72%, P 1.1%, K 0,5% yang lebih tinggi dibandingkan dengan beberapa kotoran ternak. Perlu dilakukan penelitian mengenai konsentrasi POC urin kelinci dan interval waktu yang tepat untuk tanaman pakcoy. Penelitian ini menggunakan metode RAL yang disusun secara faktorial yang terdiri dari 2 faktor perlakuan yang diaplikasikan pada tanaman pakcoy pakcoy yang diulang 3 kali. Faktor 1 yaitu konsentrasi POC kelinci yang terdiri dari P0: 0 ml/ltr, P1: 10 ml/ltr, P2:15 ml/ltr, P3:20 ml/ltr. Faktor 2 yaitu interval waktu pemberian POC kelinci terdiri dari W1: 4 hari sekali, W2: 5 hari sekali, W3: 6 hari sekali. Perlakuan terbaik yaitu pada Konsentrasi POC 20 ml/l dan interval waktu 6 hari sekali dengan rerata berat segar tajuk 190,67 g/tanaman. Kata kunci: pakcoy, POC urin kelinci, konsentrasi POC, interval Waktu POC, Hidroponik.


1963 ◽  
Vol 44 (3) ◽  
pp. 475-480 ◽  
Author(s):  
R. Grinberg

ABSTRACT Radiologically thyroidectomized female Swiss mice were injected intraperitoneally with 131I-labeled thyroxine (T4*), and were studied at time intervals of 30 minutes and 4, 28, 48 and 72 hours after injection, 10 mice for each time interval. The organs of the central nervous system and the pituitary glands were chromatographed, and likewise serum from the same animal. The chromatographic studies revealed a compound with the same mobility as 131I-labeled triiodothyronine in the organs of the CNS and in the pituitary gland, but this compound was not present in the serum. In most of the chromatographic studies, the peaks for I, T4 and T3 coincided with those for the standards. In several instances, however, such an exact coincidence was lacking. A tentative explanation for the presence of T3* in the pituitary gland following the injection of T4* is a deiodinating system in the pituitary gland or else the capacity of the pituitary gland to concentrate T3* formed in other organs. The presence of T3* is apparently a characteristic of most of the CNS (brain, midbrain, medulla and spinal cord); but in the case of the optic nerve, the compound is not present under the conditions of this study.


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