Bayar G. | Koku A.B. | Konukseven E.I.

Article | 2015 | Robotica33 ( 10 ) , pp.2204 - 2220

Studying wheel and ground interaction during motion has the potential to increase the performance of localization, navigation, and trajectory tracking control of a mobile robot. In this paper, a differential mobile robot is modeled in a way that (traction, rolling, and lateral) wheel forces are included in the overall system dynamics. Lateral wheel forces are included in the mathematical model together with traction and rolling forces. A least square parameter estimation process is proposed to estimate the parameters of the wheel forces. In order to implement the proposed methodologies, an experimental setup is used. The setup conta . . .ins a differentially driven mobile robot, a specially constructed test surface, and a camera system attached at the top of surface for obtaining ground truth. Models having one or more wheel forces are simulated to find the most realistic model. Simulation results are verified by experiments. © 2014 Cambridge University Press Daha fazlası Daha az

Mete, Filiz | Gursoy, Ulku

Article | 2013 | HACETTEPE UNIVERSITESI EGITIM FAKULTESI DERGISI-HACETTEPE UNIVERSITY JOURNAL OF EDUCATION28 ( 3 ) , pp.343 - 356

Nowadays, the importance of foreign language education has gain even more importance and countries joined into a race of teaching their own languages to the rest of the world. Within the context of this work, opinions on what are the competences of the teachers that teach Turkish as a foreign language effectively and properly were reconsidered. To gather more information, there have been several interviews with the teachers mentioned above. Some of the findings were used to make new indicators of the competences and performance. The data that had been collected were gathered under the topics of A: Professional Knowledge B: Professio . . .nal Skills and C: Professional Attitudes and Values by the references of MEB Teacher Competencies. The survey was conducted to the academicians and teachers who teach Turkish as a foreign language. It was the opinions of teacher's and academician's opinions what was asked in the survey. Then, according to the data obtained from the surveys and interviews, the draft competencies and performance indicators converted into 5-point Likert-type questionnaire. The survey was applied to those who teaches Turkish as a foreign language or has worked on the subject. According to the findings, %65,3 of them find Teaching Turkish As a Foreign Language Teachers' Competences are very important, %32 of them important, %2,7 of them moderately important.. There was no one that finds the competences not important. The work was ended with results and discussion parts Daha fazlası Daha az

Tomaç S. | Turgut S.

Article | 2006 | Annals of Ophthalmology38 ( 2 ) , pp.131 - 133

We report a case with orbital cellulitis and irreversible visual loss caused by asymptomatic acute sinusitis in a patient without symptoms or history of sinusitis. The prompt use of intravenous antibiotics in combination with early surgical drainage may prevent irreversible visual loss in the affected eye, and threatened visual loss in the fellow eye can be reduced. © Copyright 2006 by ASCO All rights of any nature whatsoever reserved.

Cakmak F. | Turk T. | Sumer M.

Article | 2014 | European Journal of Orthodontics36 ( 3 ) , pp.321 - 330

OBJECTIVES: The aim of this study was to evaluate the effects of premaxillary advancement with distraction osteogenesis (DO) on the skeletal, dental, and soft tissues. MATERIALS AND METHODS: A total of 21 cases with Angle class I molar relationship and negative overjet or edge-to-edge incisor relationship were included. Due to patient relocation during fixed orthodontic treatment the results of 19 patients (9 females, 10 males) were reported. Their average chronological age was 16.18 ± 3.10 years. An individual tooth-borne distraction appliance was used. Skeletal, dental, and soft tissue changes were evaluated on cephalograms obtain . . .ed before treatment (T1), at the end of the consolidation period (T2) and fixed orthodontic treatment (T3). Friedman and Wilcoxon tests were applied to determine the significant differences during T1-T2, T2-T3, and T1-T3 periods. RESULTS: At T2 forward movements of ANS, A, and upper incisors were significant. Significant increases of SNA, ANB, and overjet were obtained. The soft tissue points of Pn, Sn, Ss, Ls showed significant anterior movement. Arch length increase of 10.76 mm was significant. At T3 the decreases of SNA and ANB angles, and FH ? N-A distance were significant. Pn point showed significant anterior movement. Total treatment time showed significant anterior movement of points ANS, A, and upper incisors. Significant increase of SNA and ANB angles was noted. The soft tissue points followed the movement of the underlying hard tissue. LIMITATION: A class III control group could not be established for ethical reasons. CONCLUSIONS: The facial profile was improved and space was obtained to solve the maxillary anterior crowding with premaxillary advancement through DO. © The Author 2013. Published by Oxford University Press on behalf of the European Orthodontic Society. All rights reserved Daha fazlası Daha az

Erk B. | Dilmac A. | Baran Y. | Balaban A.

Article | 2000 | Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry30 ( 10 ) , pp.1929 - 1938

The synthesis, characterization and formation kinetics of Sn(II) and UO2(VI) complexes of the nitrogen and oxygen donor ligands m-chlorophenylsalicylaldimine (Hcps), m-nitrophenylsalicylaldimine (Hnps), m-methoxyphenylsalicylaldimine (Hmps) and m-methylphenylsalicylaldimine (Hmsa) are reported. The structures of the free ligands and their Sn(II) and UO2(VI) complexes were determined by NMR, elemental analyses, IR and UV-Vis studies and magnetic susceptibility measurements. Under pseudo-first order conditions, having an excess of the Schiff base present, the kinetics of complex formation of Sn(II) and UO2(VI) with a series of Schiff . . .bases was studied spectrophotometrically using the stopped-flow technique in methanol as solvent. The activation parameters ?H# and ?S# for the formation reactions of the complexes studied in methanol are almost identical which supports the assumption that the reactions have a common mechanism. The reactions are considered to proceed through an associative mechanism Daha fazlası Daha az

Golgeleyen F. | Yamamoto M.

Article | 2016 | SIAM Journal on Mathematical Analysis48 ( 4 ) , pp.2319 - 2344

In this article, we consider inverse problems of determining a source term and a coefficient of a first-order partial differential equation and prove conditional stability estimates with minimum boundary observation data and a relaxed condition on the principal part. © 2016 Societ y for Industrial and Applied Mathematics.

Saydam O. | Gokce M. | Kilicgun A. | Tanriverdi O.

Article | 2012 | Medical Oncology29 ( 2 ) , pp.589 - 594

https://dx.doi.org/10.1007/s12032-011-9879-y https://hdl.handle.net/20.500.12628/4114

Kiran S. | Cocco P. | Mannetje A. | Satta G. | D'Andrea I. | Becker N. | De Sanjosé S.

Article | 2010 | Epidemiology21 ( 6 ) , pp.905 - 910

Background: Ethylene oxide, a high-volume commodity, is an established human carcinogen, although the relevant epidemiologic evidence is limited. Methods: We explored the association between occupational exposure to ethylene oxide and risk of lymphoma in a case-control study, including 2347 lymphoma cases first diagnosed in 1998-2004 and 2463 controls, from 6 European countries. The diagnosis of lymphoma was based on the 2001 World Health Organization Classification of lymphoma. Occupational exposure to ethylene oxide was retrospectively assessed by industrial hygienists and occupational physicians based on detailed self-reported in . . .formation. We modeled risk of lymphoma with unconditional logistic regression analysis as a function of various exposure measures, adjusting for age, sex, and participating center. Results: Thirty-one cases and 27 controls (1.2% of the total study population) were defined as ever having been exposed to ethylene oxide (odds ratio = 1.3 [95% confidence interval [CI] = 0.7-2.1]). Lymphoma risk showed a 4.3-fold increase associated with medium-high frequency of exposure to ethylene oxide (95% CI = 1.4-13). Among major subtypes, chronic lymphocytic leukemia was consistently associated with ethylene oxide exposure, related in a dose-response manner to probability, frequency, and duration of exposure, as well as to cumulative exposure and (less definitively) with exposure intensity. Conclusions: Our results add to the evidence that ethylene oxide is a human carcinogen. © 2010 by Lippincott Williams & Wilkins Daha fazlası Daha az

Eker F. | Harkin S.

Article | 2012 | Journal of Affective Disorders138 ( 3 ) , pp.409 - 416

Objectives: This study examined the effectiveness of a six week psychoeducation program on the adherence of patients with Bipolar Affective Disorder. Method: An experimental study was conducted at a mood disorder outpatient clinic in Zonguldak, Turkiye. Participants were randomly assigned to either intervention (n = 35) or control groups (n = 36). Both groups were given pre-tests and post-tests to measure their adherence. In the psychoeducation group, the psychoeducation program was provided for 2 h/week for six weeks. In the control group, standard care and information were provided. Results: After six weeks, the psychoeducation pr . . .ogram significantly improved patients' adherence. The treatment adherence rate of the patients in the intervention group increased from 40.0% (14 patients on pre-test), to 86.7% (26 patients on post-test). Meanwhile, the treatment adherence rate of the control group was 38.9% (14 patients) for the pre-test, and 24.2% (8 patients) for the post-test. Conclusion: This controlled trial study demonstrated that a six-week psychoeducation program can be a useful intervention to improve adherence in patients undergoing bipolar affective disorder rehabilitation. More comprehensive mental health outcomes need to be undertaken. Further studies exploring a longer term follow-up are also required. © 2012 Elsevier B.V. All rights reserved Daha fazlası Daha az

Ercan, Makbule | Kaymak, Enes | Yuksek, Mutlu

Article | 2016 | ASIM ALLERJI IMMUNOLOJI14 ( 1 ) , pp.11 - 18

Objective: Asthma is a disease that occurs in genetically susceptible individuals who are exposed to allergens. It is currently impossible to change our genetic code. Elimination of environmental risk factors that play an important role in the emergence of asthma may help control asthma symptoms. The aim of this study was to investigate the role of environmental control measures in asthmatic children who are sensitized to house dust mites. Materials and Methods: The study included of 64 asthmatic children aged 7-16 years who had applied to Bulent Ecevit University School of Medicine's child allergy and immunology polyclinic. To eval . . .uate the role of environmental control measures on asthma control, we performed home visits to observe the patients' houses and their environment and the patients were given a questionnaire form of 39 questions about environmental conditions where the child lived and an asthma control questionnaire consisting of 7 questions. Results: The asthma was controlled well in 51 children (79.6%) and poorly in 13 (20.3%). Duration of disease, gender, frequency of doctor visits, economic situation and living conditions of the family, presence of pets, cleaning conditions, heating type and instant relative humidity of the house, regular use of medications, cigarette exposure, flu vaccination, and presence of concomitant diseases to asthma in the family were not different between the groups. There was also no difference between two groups in terms of the presence or absence of carpets in the house and in the room of asthmatic children. The maternal education level was statistically significantly different between the two groups (p-0.023), whereas the paternal education level not (p-0.133). Conclusion: Environmental control measures to control asthma in children who are sensitized to house dust mites are a significant issue to consider. Successful control and prevention of asthma needs a comprehensive approach including education, cleaning, housing features and maintaining these practices Daha fazlası Daha az

Akkoyunlu M.E. | Altin R. | Kart L. | Atalay F. | Or¨nek T. | Bayram M. | Tor M.

Article | 2013 | Multidisciplinary Respiratory Medicine8 ( 2 ) , pp.11 - 18

Background: The aim of this study was to assess the prevalence of Obstructive sleep apnoea syndrome (OSAS) in long-distance drivers located in the Zonguldak area and to show the correlation between OSAS and traffic accidents. Methods: In this study, 241 long-distance drivers who were residents of Zonguldak province were interviewed face-to-face and a questionnaire regarding OSAS symptoms, occupational histories, and numbers of accidents was administered. Body mass measurements were also taken from participants. Patients who exhibited evidence of OSAS underwent polysomnography (PSG). Results: Snoring was detected in 56% out of all pa . . .rticipants, daytime sleepiness was observed in 26.6% and apnoea in 11.6%. All-night PSG was applied to 42 participants who had a high probability of clinical OSAS. Among these, eight had an apnoea-hypopnoea index (AHI) < 5. The prevalence of OSAS was 14.1%. There was a significant relationship between the ratio of traffic accidents per professional years and AHI (r = 0.571; p < 0.005). Conclusions: OSAS prevalence was higher among long-distance drivers in the Zonguldak region. Disease severity was directly proportional to traffic-accident risk, and thus represents a serious social problem. © 2013 Akkoyunlu et al.; licensee BioMed Central Ltd Daha fazlası Daha az

Alan Ş. | Sarışahin T. | Acar Şahin A. | Kaplan A. | Pınar N.M.

Article | 2019 | Aerobiologia , pp.11 - 18

Ambrosia artemisiifolia L., known as common ragweed, is an invasive and allergenic plant that has begun to expand its presence in Turkey. Although ragweed pollen has been monitored for a long time—especially in the atmosphere of cities in Northern Anatolia—the invasion of the plant is more limited compared to that of other European countries. Here, we present the highest ragweed pollen concentration recorded in Turkey, as well as changes in the Amb a 1 allergen level in the air during 2015 and 2016 in Zonguldak, measured using a BGI 900 cascade impactor. The Seasonal Pollen Integral (SPIn) was found to be 709 pollen day/m3 and 1542  . . .pollen day/m3 in 2015–2016, respectively. The sum of Amb a 1 in both stages was 8.42 × 10-3 U/m3 and 13.1 × 10-3 U/m3 over the same period. The number of days in which the Ambrosia pollen concentration was higher than 50 pollen/m3 doubled in 2016 compared to 2015, despite the negative effect of rainfall on pollen and allergen concentration in 2016. The pollen and allergen sources were evaluated by using simulated air mass movement with a Hybrid Single-Particle Lagrangian Integrated Trajectory model. Our findings suggest that individuals in Zonguldak are exposed as much to pollen—and possibly allergens—transported from the Ukraine, Russia and to a limited extent from Moldova. Furthermore, the allergen content of pollen in Zonguldak was much higher than other cities where Amb a 1 is monitored. We also demonstrated that the date of the peak pollen day may be an indicator of the source of long distance transportation. © 2019, Springer Nature B.V Daha fazlası Daha az