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Query Categorization from Web Search Logs Using Machine Learning Algorithms
Christian Højgaard,Joachim Sejr,Yun-Gyung Cheong 보안공학연구지원센터 2016 International Journal of Database Theory and Appli Vol.9 No.9
This paper presents a data-driven methodology to disambiguate a query by suggesting relevant subcategories within a specific domain. This is achieved by finding correlations between the user’s search history and the context of the current search keyword. We apply automatic categorization on each query to identify a list of categories which can describe the query given. To predict the categories of a user input query, we employed machine learning algorithms. We present the preliminary evaluation results and conclude with future work.
PLATOONING AND BASE FLAPS FOR DRAG REDUCTION OF TRUCKS
Christian Navid Nayeri,Hanns-Joachim Schmidt 한국자동차공학회 2022 International journal of automotive technology Vol.23 No.6
Experimental investigations on generic truck models were carried out on the combined drag reducing effects of platooning and base flaps. A towing tank facility was used with model scales of 1:15 and Reynolds numbers of up to 106. Two vehicle and three vehicle configurations with variable intervehicle distances were analyzed without considering the influence of a ground proximity. The potential of two and three vehicle platoons for drag reduction is clearly demonstrated exemplary for flap angles of 15°. Under certain conditions base flaps increase these benefits. However, their effect depends on the intervehicle distance, the flap angle, and the vehicle position within the platoon. The platoon drag can be reduced by additional 25 % when base flaps are added which corresponds to an overall platoon drag reduction of about 40 %.
Gray State Dynamics in the Blinking of Single Type I Colloidal Quantum Dots
Martin Belitsch,Christian Gruber,Harald Ditlbacher,Andreas Hohenau,Joachim R. Krenn 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2018 NANO Vol.13 No.4
We analyze the photoluminescence intermittency (blinking) of single colloidal CdSe/ZnS quantum dots (QDs). Two distinct emission levels, a bright on-state and a low-intensity gray state, correspond to monoexponential decay times of 58 ns and 4 ns, respectively. The ratio gray/on states increases upon increasing excitation intensity. Conversely, the gray/on level intensity ratio increases upon coupling to a plasmonic nanostructure, while the states maintain their monoexponential character. Corroborated by data from a CdSeTe/ZnS QD, our results demonstrate that type I QDs can indeed show a gray (rather than completely dark) emission level with a distinct monoexponential decay, a point that is discussed controversially in the literature.
Liposuction in the Treatment of Lipedema: A Longitudinal Study
Dadras, Mehran,Mallinger, Peter Joachim,Corterier, Cord Christian,Theodosiadi, Sotiria,Ghods, Mojtaba Korean Society of Plastic and Reconstructive Surge 2017 Archives of Plastic Surgery Vol.44 No.4
Background Lipedema is a condition consisting of painful bilateral increases in subcutaneous fat and interstitial fluid in the limbs with secondary lymphedema and fibrosis during later stages. Combined decongestive therapy (CDT) is the standard of care in most countries. Since the introduction of tumescent technique, liposuction has been used as a surgical treatment option. The aim of this study was to determine the outcome of liposuction used as treatment for lipedema. Methods Twenty-five patients who received 72 liposuction procedures for the treatment of lipedema completed a standardized questionnaire. Lipedema-associated complaints and the need for CDT were assessed for the preoperative period and during 2 separate postoperative follow-ups using a visual analog scale and a composite CDT score. The mean follow-up times for the first postoperative follow-up and the second postoperative follow-up were 16 months and 37 months, respectively. Results Patients showed significant reductions in spontaneous pain, sensitivity to pressure, feeling of tension, bruising, cosmetic impairment, and general impairment to quality of life from the preoperative period to the first postoperative follow-up, and these results remained consistent until the second postoperative follow-up. A comparison of the preoperative period to the last postoperative follow-up, after 4 patients without full preoperative CDT were excluded from the analysis, indicated that the need for CDT was reduced significantly. An analysis of the different stages of the disease also indicated that better and more sustainable results could be achieved if patients were treated in earlier stages. Conclusions Liposuction is effective in the treatment of lipedema and leads to an improvement in quality of life and a decrease in the need for conservative therapy.
Liposuction in the Treatment of Lipedema: A Longitudinal Study
Mehran Dadras,Peter Joachim Mallinger,Cord Christian Corterier,Sotiria Theodosiadi,Mojtaba Ghods 대한성형외과학회 2017 Archives of Plastic Surgery Vol.44 No.4
Background Lipedema is a condition consisting of painful bilateral increases in subcutaneous fat and interstitial fluid in the limbs with secondary lymphedema and fibrosis during later stages. Combined decongestive therapy (CDT) is the standard of care in most countries. Since the introduction of tumescent technique, liposuction has been used as a surgical treatment option. The aim of this study was to determine the outcome of liposuction used as treatment for lipedema. Methods Twenty-five patients who received 72 liposuction procedures for the treatment of lipedema completed a standardized questionnaire. Lipedema-associated complaints and the need for CDT were assessed for the preoperative period and during 2 separate postoperative follow-ups using a visual analog scale and a composite CDT score. The mean follow-up times for the first postoperative follow-up and the second postoperative follow-up were 16 months and 37 months, respectively. Results Patients showed significant reductions in spontaneous pain, sensitivity to pressure, feeling of tension, bruising, cosmetic impairment, and general impairment to quality of life from the preoperative period to the first postoperative follow-up, and these results remained consistent until the second postoperative follow-up. A comparison of the preoperative period to the last postoperative follow-up, after 4 patients without full preoperative CDT were excluded from the analysis, indicated that the need for CDT was reduced significantly. An analysis of the different stages of the disease also indicated that better and more sustainable results could be achieved if patients were treated in earlier stages. Conclusions Liposuction is effective in the treatment of lipedema and leads to an improvement in quality of life and a decrease in the need for conservative therapy.
Scagliotti, Giorgio Vittorio,Parikh, Purvish,von Pawel, Joachim,Biesma, Bonne,Vansteenkiste, Johan,Manegold, Christian,Serwatowski, Piotr,Gatzemeier, Ulrich,Digumarti, Raghunadharao,Zukin, Mauro,Lee, American Society of Clinical Oncology 2008 Journal of clinical oncology Vol.26 No.21
<B>Purpose</B><P>Cisplatin plus gemcitabine is a standard regimen for first-line treatment of advanced non-small-cell lung cancer (NSCLC). Phase II studies of pemetrexed plus platinum compounds have also shown activity in this setting.</P><B>Patients and Methods</B><P>This noninferiority, phase III, randomized study compared the overall survival between treatment arms using a fixed margin method (hazard ratio [HR] < 1.176) in 1,725 chemotherapy-naive patients with stage IIIB or IV NSCLC and an Eastern Cooperative Oncology Group performance status of 0 to 1. Patients received cisplatin 75 mg/m<SUP>2</SUP>on day 1 and gemcitabine 1,250 mg/m<SUP>2</SUP>on days 1 and 8 (n = 863) or cisplatin 75 mg/m<SUP>2</SUP>and pemetrexed 500 mg/m<SUP>2</SUP>on day 1 (n = 862) every 3 weeks for up to six cycles.</P><B>Results</B><P>Overall survival for cisplatin/pemetrexed was noninferior to cisplatin/gemcitabine (median survival, 10.3 v 10.3 months, respectively; HR = 0.94; 95% CI, 0.84 to 1.05). Overall survival was statistically superior for cisplatin/pemetrexed versus cisplatin/gemcitabine in patients with adenocarcinoma (n = 847; 12.6 v 10.9 months, respectively) and large-cell carcinoma histology (n = 153; 10.4 v 6.7 months, respectively). In contrast, in patients with squamous cell histology, there was a significant improvement in survival with cisplatin/gemcitabine versus cisplatin/pemetrexed (n = 473; 10.8 v 9.4 months, respectively). For cisplatin/pemetrexed, rates of grade 3 or 4 neutropenia, anemia, and thrombocytopenia (P ≤ .001); febrile neutropenia (P = .002); and alopecia (P < .001) were significantly lower, whereas grade 3 or 4 nausea (P = .004) was more common.</P><B>Conclusion</B><P>In advanced NSCLC, cisplatin/pemetrexed provides similar efficacy with better tolerability and more convenient administration than cisplatin/gemcitabine. This is the first prospective phase III study in NSCLC to show survival differences based on histologic type.</P>
Haktan Altinova,Sven Möllers,Ronald Deumens,Jose Gerardo-Nava,Tobias Führmann,Sabien Geraldine Antonia van Neerven,Ahmet Bozkurt,Christian Andreas Mueller,Hans Joachim Hoff,Ingo Heschel,Joachim Weis,G 한국조직공학과 재생의학회 2016 조직공학과 재생의학 Vol.13 No.5
The implantation of bioengineered scaffolds into lesion-induced gaps of the spinal cord is a promising strategy for promoting functional tissue repair because it can be combined with other intervention strategies. Our previous investigations showed that functional improvement following the implantation of a longitudinally microstructured collagen scaffold into unilateral mid-cervical spinal cord resection injuries of adult Lewis rats was associated with only poor axon regeneration within the scaffold. In an attempt to improve graft-host integration as well as functional recovery, scaffolds were seeded with highly enriched populations of syngeneic, olfactory bulb-derived ensheathing cells (OECs) prior to implantation into the same lesion model. Regenerating neurofilament-positive axons closely followed the trajectory of the donor OECs, as well as that of the migrating host cells within the scaffold. However, there was only a trend for increased numbers of regenerating axons above that supported by non-seeded scaffolds or in the untreated lesions. Nonetheless, significant functional recovery in skilled forelimb motor function was observed following the implantation of both seeded and non-seeded scaffolds which could not be correlated to the extent of axon regeneration within the scaffold. Mechanisms other than simple bridging of axon regeneration across the lesion must be responsible for the improved motor function.