26 research outputs found

    Towards a compact representation of temporal rasters

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    Big research efforts have been devoted to efficiently manage spatio-temporal data. However, most works focused on vectorial data, and much less, on raster data. This work presents a new representation for raster data that evolve along time named Temporal k^2 raster. It faces the two main issues that arise when dealing with spatio-temporal data: the space consumption and the query response times. It extends a compact data structure for raster data in order to manage time and thus, it is possible to query it directly in compressed form, instead of the classical approach that requires a complete decompression before any manipulation. In addition, in the same compressed space, the new data structure includes two indexes: a spatial index and an index on the values of the cells, thus becoming a self-index for raster data.Comment: This research has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie Actions H2020-MSCA-RISE-2015 BIRDS GA No. 690941. Published in SPIRE 201

    The management of Phomopsis viticola in Tarnave vineyards

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    Phomopsis viticola, in poorly managed vineyards, can produce a lot of damage due to its year-to-year infection pattern. In combination with a high spore reserve from the previous year, this causes reduced grape yields. This study aims to assess the Phomopsis viticola attack in Tarnave vineyards during May-July 2020. The data (frequency and intensity of the attack) was collected from Craciunelu de Jos, and the attack degree (AD) was calculated before and after the treatments applied to 'Saugvinon blanc', 'Riesling italian', 'Fetească regală' and 'Traminer roz' grapevine cultivars. The AD before the treatment with contact and systemic products had values between 27.80% and 4.10%, after the treatments of the first period (MayJune 2020) the AD was reduced at values between 3.40% and 0.83% and after the treatments of the second period (June-July 2020) the AD had the values between 9.00% and 12.40%. In Tarnave vineyards, 'Fetească regală', 'Sauvignion blanc' and Riesling italian cultivars have shown a higher susceptibility to the Phomopsis viticola attack and Traminer roz' a lower one. The fungicide treatments administrated were efficient in managing Phomopsis viticola in vineyards from Transylvania

    Living donor liver transplant in Romania – 116 cases experience

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    Centrul de Chirurgie Generală și Transplant Hepatic “Dan Setlacec”, Institutul Clinic Fundeni, Bucureşti, România, Al XII-lea Congres al Asociației Chirurgilor „Nicolae Anestiadi” din Republica Moldova cu participare internațională 23-25 septembrie 2015Introducere: Cererea pentru transplantul hepatic în Romania este în continuă creștere în timp ce penuria de donatori de organe persistă. Timpul lung de așteptare pentru un transplant de ficat şi disfuncţia hepatică progresivă aferentă așteptării a motivat multe familii să ia în considerare donarea de organe. Material și metode: În anul 2000 a fost realizat primul transplant hepatic ortotopic cu ficat întreg de către echipa I.Popescu et al. la Institutul Clinic Fundeni din Bucureşti, urmat de transplantul de ficat de la donator viu (LDLT) mai târziu în acelaşi an, ajungând în aprilie 2015 la un total de 116 de transplanturi cu ficat de la donator viu. LDLT a fost realizată cu hemificat drept la 78 pacienți, secțiune laterală stânga – la 26 pacienți, hemificat stâng – la 7 pacienți, hemificat stâng în bloc cu segmentul 1 – la 3 pacienți, şi dual graft – la 2 pacienți. Rezultate: Rata de morbidități majore a fost de 53,4% (62 pacienți), rata generală de retransplant a fost de 11,3% (13 pacienți). Rata de supraviețuire generală la 1-, 3-, şi 5 ani a fost de 88,8%, 82,5%, respectiv, 79,2%. Concluzii: Scopul nostru a fost de a reduce rata mortalității pe lista de așteptare prin scurtarea timpului de aşteptare pentru TH prin asigurarea grefelor necesare. Avantajele LDLT includ posibilitatea de a fi efectuate în regim programat şi cu un timp de aşteptare scurt pentru primitor, în timp ce indicaţiile de transplant pot fi extinse (ex: HCC în afara criteriilor Milano).Introduction: The request for Liver Transplant (LT) in Romania continues to increase while the donor pool size remains inadequate. The long waiting time for a liver transplant and the progressive liver dysfunction that occurs in this time has motivated many families to consider living donation. Material and methods: In 2000, the first successful LT (with whole graft) was carried out by I.Popescu et al. at Fundeni Clinical Institute in Bucharest, followed by the first living donor liver transplantation (LDLT) (successful) later the same year, reaching 116 living donors liver transplants by April 2015. LDLT was performed with right hemiliver in 78 pts, left lateral section in 26 pts, left hemiliver in 7 pts, left hemiliver with segment 1 in 3 pts, and dual graft LDLT in 2 pts: one received a right hemiliver and a left lateral section (17), and one received a left hemiliver and a left lateral section. Results: Major morbidity rates were 53.4% (62 pts) Overall retransplantation rate was 11.3% (13 pts). Long-term overall 1-, 3-, and 5- year estimated survival rates were 88.8%, 82.5%, and 79.2%, respective. Conclusions: Our main goal was to continuously reduce the drop-out rate on waiting list (due to mortality and morbidity) by shortening the waiting time for LT insured by providing the necessary grafts. Advantages of LDLT include the ability to be performed on an elective basis, with optimal timing and no waiting time for the recipient, while the indications for transplantation may be extended (i.e. HCC beyond Milan criteria)

    15 years of Romanian national program of liver transplant – a retrospective analysis of 648 patients operated

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    Centrul de Chirurgie Generală şi Transplant Hepatic “Dan Setlacec”, Institutul Clinic Fundeni, Bucureşti, România, Al XII-lea Congres al Asociației Chirurgilor „Nicolae Anestiadi” din Republica Moldova cu participare internațională 23-25 septembrie 2015Introducere: Transplantul hepatic (TH) a devenit metoda de elecție în tratamentul bolilor hepatice în stadiu terminal, cu peste 20.000 de proceduri anuale la nivel mondial. Scopul acestui studiu este de a analiza rezultatele programului de transplant hepatic românesc după 15 ani de activitate. Material și metode: Între aprilie 2000 și aprilie 2015, 648 de pacienți au fost transplantați cu ficat în România. Raportul pe sexe a fost 382 (m) / 266 (f), în timp ce raportul adulți/copii a fost de 588/60, cu o vârstă medie de 45 de ani. Indicațiile principale pentru TH au fost: ciroza de etiologie VHB (176 pct; 27,1%), HCC (128 pct; 19,7%), și ciroza de etiologie VHC (118 pct; 18,2%). Transplantul hepatic de la donator cadaveric a fost efectuat la 532 pacienți (82,1%): 512 pct cu ficat întreg, 16 pct – cu ficat split, 2 pct – cu ficat redus, transplant-domino – la 2 pct. Transplantul de ficat de la donator viu a fost efectuat la 116 pct (17,9%). Rezultate: Mortalitatea perioperatorie a fost de 7,9% (51 pct). Rata de retransplant a fost de 4,6% (30 pct). Supraviețuirea la 1, 3 și 5 ani pe termen lung a fost estimată la 88,8%, 82,5% și respectiv 79,2%. Timpul de așteptare pentru TH a scăzut semnificativ în timp. Mortalitatea pe un an pe lista de așteptare a scăzut semnificativ, de la 31,4% la 11,8%. Concluzii: Programul de transplant hepatic în România se adresează atât cauzelor de insuficiență hepatică acută și cronică, cât și tumorilor hepatice la adulți și copii, fiind folosite toate tehnicile chirurgicale. Amploarea programului a crescut constant în timp, ceea ce a adus la scurtarea timpului și a ratelor de mortalitate pe lista de așteptare.Background: Liver transplantation (LT) is the treatment of choice for end-stage liver diseases, with more than 20.000 procedures yearly worldwide. The aim of this study was to analyze the results of Romanian National Program of LT after 15 years of activity. Methods: Between April 2000 and April 2015, 648 patients received 678 LTs in Romania. Male/female ratio was 382/266, while adult/pediatric ratio was 588/60, with a mean age range 7 months – 68 yr. Main LT indications in the adult population were HBVrelated cirrhosis (176 pts; 27.1%), hepatocellular carcinoma (128 pts; 19.7%), and HCV-related cirrhosis (118 pts; 18.2%). DDLT (death donor liver transplant) was performed in 532 pts (82.1%): whole LT in 512 pts, split LT in 16 pts, reduced LT in 2 pts, and domino LT in 2 pts. LDLT (living donor liver transplant) was performed in 116 pts (17.9%). Results: Perioperative mortality was 7.9% (51 pts). Retransplantation rate was 4.6% (30 pts). Long-term overall 1-, 3-, and 5- year estimated survival rates were 88.8%, 82.5%, and 79.2%, respectively. Median waiting time for LT decreased significantly over time. One-year overall mortality on waiting list also decreased significantly over time from 31.4% to 11.8%. Conclusions: The liver transplantation program in Romania addresses all causes of acute and chronic liver failure or liver tumors in adults and children, using all surgical techniques. The program constantly increased over time, leading to less time and lower mortality rate on the waiting list with the results similar to those of other centers

    Pediatric liver transplant in Romania – 60 cases experience

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    Centrul de Chirurgie Generală şi Transplant Hepatic “Dan Setlacec”, Institutul Clinic Fundeni, Bucureşti, România, Al XII-lea Congres al Asociației Chirurgilor „Nicolae Anestiadi” din Republica Moldova cu participare internațională 23-25 septembrie 2015Introducere: În ultimele două decenii transplantul hepatic pediatric a devenit o soluţie viabilă pentru copiii cu boală hepatică în stadiu terminal. Deşi cazurile pediatrice reprezintă aproximativ 11% din totalul pacienţilor de pe lista de aşteptare din România, utilizarea grefelor de la donator în viață, a grefelor split și a celor reduse a oferit posibilitatea transplantării mai multor pacienţi pediatrici şi adolescenţi, reducând astfel numărul de pacienţi de pe lista de aşteptare şi demonstrând rezultate similare în comparaţie cu transplantul de ficat la adult. Material și metode: Între martie 2004 şi aprilie 2015 un numar de 60 de pacienți pediatrici au fost transplantați hepatic de echipa I.Popescu et al. la Institutul Clinic Fundeni din Bucureşti. Principalele indicaţii pentru transplantul pediatric au fost anomaliile biliare congenitale (atrezie biliară, ductopenie) (12 pacienți; 20%), boala Wilson (11 pacienți; 18,3%), glicogenoză (8 pacienți; 13,3%), şi fibrozele hepatice congenitale (7 pacienți; 11,7%). Rezultate: La copii şi adolescenţi ratele de supraviețuire pe termen lung la 1, 3, şi 5 ani au fost de 91,9%, 88,5%, respectiv 88,5% (0-17 ani). Concluzie: Transplantul de ficat pentru bolile hepatice în stadiul terminal la copii a devenit o soluţie viabilă, donatorul viu fiind principala sursă de grefe hepatice. Avantajele transplantului hepatic de la donator în viață includ posibilitatea de a fi efectuate în regim programat într-un cadru optim şi timp de aşteptare scăzut pentru primitor.Introduction: In the last two decades pediatric liver transplantation became a viable solution for children with End stage liver disease. Although pediatric cases represent about 11% of the total patients on the waiting list in Romania, the utilization of living-related donors livers, cut down “reduced” and split liver grafts has provided more liver grafts for pediatric patients thus reducing the number of the patients on the waiting list and had shown results similar in comparison with adult liver transplant. Material and methods: Between March 2004 and April 2015, 60 children pts were liver transplanted by I.Popescu et al. at Fundeni Clinical Institute in Bucharest. The main indication for transplantation were congenital biliary anomalies (biliary atresia, hypoplasia or ductopenia) (12 pts; 20%), Wilson’s disease (11 pts; 18.3%), glycogenosis (8 pts; 13.3%), and congenital liver fibrosis (7 pts; 11.7%). Results: In pediatric patients, long-term 1-, 3-, and 5-year estimated survival rates were 91.9%, 88.5%, and 88.5% (0-17 yrs). Conclusion: Liver transplant for end stage liver disease in children has became a viable curative solution, living donor liver transplant being the main source of liver grafts

    Platform session

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    Penile fracture – clinical case presentation

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    Mobility mining for journey planning in Rome

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    We present recent results on integrating private car GPS routines obtained by a Data Mining module. into the PETRA (PErsonal TRansport Advisor) platform. The routines are used as additional “bus lines”, available to provide a ride to travelers. We present the effects of querying the planner with and without the routines, which show how Data Mining may help Smarter Cities applications
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