检索结果-南通市图书馆

Impact of different sampling rates on precise point positioning performance using online processing service

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Geo-Spatial Information Science 2021年第2期24卷 302-312,I0008页

作者： Serdar Erol Reha Metin Alkan İ.Murat Ozulu Veli Ilçi Department of Geomatics Engineering Istanbul Technical UniversityIstanbulTurkey Department of Technical Programs Hitit UniversityÇorumTurkey Department of Geomatics Engineering Ondokuz Mayıs UniversitySamsunTurkey

In this study,the effect of different sampling rates(*** recording interval)on the Precise Point Positioning(PPP)solutions in terms of accuracy was *** this purpose,a field test was carried out inÇorum province,Turkey,on 11 September *** this context,a Geodetic Point(GP)was established and precisely coordinated.A static GNSS measurement was occupied on the GP for about 4-hour time at 0.10 second(s)/10 Hz measurement intervals with the Trimble R10 geodetic grade GNSS *** original observation file was converted to RINEX format and then decimated into the different data sampling rates as 0.2 s,0.5 s,1 s,5 s,10 s,30 s,60 s,and 120 *** these RINEX observation files were submitted to the Canadian Spatial Reference System-Precise Point Positioning(CSRS-PPP)online processing service the day after the data collection date by choosing both static and kinematic processing *** this way,PPP-derived static coordinates,and the kinematic coordinates of each measurement epoch were *** PPP-derived coordinates obtained from each decimated sampling intervals were compared to known coordinates of the GP for northing,easting,2D position,and height *** to the static and kinematic processing results,high data sampling rates did not change the PPP solutions in terms of accuracy when compared to the results obtained using lower sampling *** results of this study imply that it was not necessary to collect GNSS data with high-rate intervals for many surveying projects requiring cm-level accuracy.

关键词： Precise Point Positioning(PPP) online GNSS postprocessing service high-rate GNSS sampling rate monitoring structure behavior

Health literacy,behavioral and psychosocial characteristics in coronary artery patients:A hospital-based study in Turkey

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Acute Disease 2022年第1期11卷 18-25页

作者： Asuman Ahcioglu Gulay Yilmazel Public Health Department Hitit UniversityÇorumTurkey

Objective:To investigate health literacy,behavioral and psychosocial characteristics in coronary artery ***:Between March 2019 and 2020 years,275 coronary artery patients aged≥50 years were included in the *** Health Literacy Scale-32 and Beck Depression Inventory were used to collect the ***:General health literacy index score was 31.7 and the prevalence of limited health literacy was 59.3%.Adequate health literacy was 2.8 fold higher in the 50-64 age group,3.1 fold higher among men,3.4 fold higher among married and 5.3 fold higher among those who believed in the necessity of individual protective practices(P<0.05).Significant differences were also found in different working status,living places,perceived economic situation,perceived general health status,comorbidities,family history of coronary artery disease,angiography history,material skills on reading and understanding,level of depressive syptom,commitment to individual protective practices health check-ups,utilizing health services,cigarette and alcohol use,and exercise and nutrition between limited and adequate health literacy(P<0.05).Logistic regression analysis showed that adequate health literacy was significantly higher among younger patients(OR:2.81;95%CI:1.46-5.62),male gender(OR:3.10;95%CI:1.46-6.58),married(OR:3.42;95%CI:1.39-8.44)and those with belief in individual protective practices(OR:5.3;95%CI:1.93-14.96).Conclusions:Health literacy is poor among coronary artery patients and behavioral and psychosocial variables differ with health literacy *** keep cardiovascular health among these patients,health literacy-based interventions should be adopted in coronary artery clinics,especially for risky population.

关键词： Coronary artery disease Health literacy Risk-factors Patients

Performance analysis of real-time and post-mission kinematic precise point positioning in marine environments

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Geodesy and Geodynamics 2020年第6期11卷 401-410页

作者： Serdar Erol Reha Metin Alkan I.Murat Ozulu Veli Ilçi Department of Geomatics Engineering Istanbul Technical UniversityIstanbulTurkey Department of Technical Programs Hitit UniversityÇorumTurkey Department of Geomatics Engineering Ondokuz Mayıs UniversitySamsunTurkey

This article focuses on the performance analysis of both real-time and post-mission kinematic precise point positioning(PPP)in challenging marine *** this purpose,a real dynamic experiment lasting 6 h was carried out on a lake dam in?orum City of *** the kinematic test was continuing,the real-time PPP coordinates were obtained for each measurement epoch with a commercial real-time PPP(RT-PPP)service,namely the Trimble Center Point *** the post-mission PPP(PM-PPP)coordinates were calculated by using Multi-GNSS data and the Multi-GNSS Experiment(MGEX)precise *** kinematic RT-PPP and PM-PPP results showed that the PPP coordinates were consistent with the relative solution at centimetre and decimetre level in horizontal and height components,*** study implies that PPP technique is a powerful tool for highly accurate positioning in both real-time and post-mission modes,even for dynamic applications in harsh environments.

关键词： Kinematic survey Precise point positioning Real-time PPP IGS-RTS Global GNSS correction service

Clinical and Demograhical Characteristics of Patients with Maxillofacial Trauma in the Emergency Department

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Open Journal of Emergency Medicine 2019年第2期7卷 28-39页

作者： Seval Komut Bedriye Mü ge Sö nmez Ali Kemal Erenler Erdal Komut Department of Emergency Medicine Ankara Numune Education and Research Hospital Ankara Turkey Department of Emergency Medicine Hitit University School of Medicine &#199 orum Turkey Department of Radiodiagnostics Hitit University School of Medicine &#199 orum Turkey

Objective: We aimed to investigate the clinical and demographical characteristics of patients admitted to the Emergency Department (ED) due to maxillofacial trauma (MFT). Methods: This sectional and retrospective study was conducted in Ankara Numune Education and Research Hospital ED between 1st March 2010 and 31st March 2017. Into the study, patients with MFT older than 15 years of age were included. Characteristics of patients were recorded. Patients’ characteristics were compared according to presence of fractures. Results: Mean age of the patients was 41.1 ± 18.0 years and a statistically significant relationship was determined between age and presence of fracture (p > 0.05). Of the patients, 74.5% was male and fracture presence was significantly more in males than females (p 0.05). Conclusion: The MFT is a pathology that either leads to its own, or can lead to life-threatening consequences as a result of additional organ injuries. The physician evaluating the patient should determine the MFT and additional pathologies and ensure that the interventions start as soon as possible.

关键词： Maxillofacial Trauma Emergency Department Maxillofacial Fracture

Role of matrix structure and flaw size distribution modification on deflection hardening behavior of polyvinyl alcohol fiber reinforced engineered cementitious composites(PVA-ECC)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Central South University 2019年第12期26卷 3279-3294页

作者： Kamile TOSUN FELEKOĞLU Eren GÖDEK Department of Civil Engineering Dokuz Eylül Universityİzmir 35390Turkey Department of Construction Technology Hitit UniversityÇorum 19169Turkey

The multiple cracking and deflection hardening performance of polyvinyl alcohol fiber reinforced engineered cementitious composites(PVA-ECC)under four-point flexural loading have been *** with different binder combinations and W/B ratios(from 0.44 to 0.78)providing satisfactory PVA fiber dispersion were specially *** of pre-existing flaw size distribution modification on deflection hardening behavior was comparatively studied by adding 3 mm diameter polyethylene beads into the mixtures(6%by total volume).Natural flaw size distributions of composites without beads were determined by cross sectional *** crack number and crack width distributions of specimens after flexural loading were characterized and the possible causes of changes in multiple cracking and deflection hardening behavior by flaw size distribution modification were *** results from the view point of deflection hardening behavior were obtained from metakaolin incorporated and flaw size distribution modified PVA-ECCs prepared with W/B=*** dual roles of W/B ratio and superplasticizer content on flaw size distribution,cracking potential and fiber-matrix bond behavior were *** size distribution modification is found beneficial in terms of ductility improvement at an optimized W/B ratio.

关键词： fiber reinforced cementitious composites metakaolin deflection hardening multiple cracking flaw size distribution

Clinical and laboratory features of COVID-19 patients infected with SARS-CoV-2 variant B.1.1.7 versus those infected with other SARS-CoV-2 strains:A retrospective observational study

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Acute Disease 2022年第6期11卷 236-242页

作者： Zeynep Ergenc Hasan Ergenc AhmetÖztürk Gülsüm Kaya Özlem Karaca Ocak Özgürİnce Department of Internal Medicine Ayancık Government HospitalSinopTurkey Department of Emergency Medicine Çorum Erol Olçok Training and Research HospitalÇorumTurkey Department of Infection Control Committee Sakarya Univercity Training and Research HospitalSakaryaTurkey Department of General Surgeon Medicana International HospitalSamsunTurkey Department of Pulmonology Medicana International HospitalSamsunTurkey

Objective:To investigate the clinical symptoms of coronavirus disease 2019(COVID-19)patients with and without B.1.1.7 ***:This retrospective observational study included COVID-19 patients who were divided into two groups,the mutation and the non-mutation *** characteristics,clinical characteristics,laboratory parameters,and mortality rates were recorded and compared between the two ***:A total of 196 patients were included in the *** relationship between the mutant virus status and sex,age,comorbidity,survival status,and disease severity was not significant(P>0.05).No significant differences were found in duration of hospitalization between the mutation and the non-mutation group(P>0.05).However,there was a statistically significant difference between patients with and without mutant viruses in hemoglobin,mean platelet volume,procalcitonin,low density lipoprotein,iron-binding capacity,potassium,calcium,C-reactive protein,folate,creatine kinase myocardial band,D-dimer,and international normalized ratio(P<0.05).Conclusions:No significant difference is found in mortality rate,disease severity or duration of hospitalization between the patients with and without variant *** monitoring of COVID-19 patients is required for all variants.

关键词： COVID-19 B.1.1.7 Variant Mutation Clinical parameters Laboratory parameters

The Efficacy of Tocilizumab for Takayasu Arteritis: Review of the Literatures

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Rheumatology and Autoimmune Diseases 2015年第4期5卷 118-125页

作者： Nesibe Karahan Yesil Hatice Sahin Metin Isik Ziyaeddin Aktop Ismail Dogan Ali Erdem Baki Department of Rheumatology Ankara Research and Education HospitalAnkaraTurkey Division of Rheumatology Department of Internal MedicineFaculty of MedicineBülent Ecevit UniversityZonguldakTurkey Division of Rheumatology Department of Internal MedicineFaculty of MedicineMevlana UniversityKonyaTurkey Department of Cardiology Bülent Ecevit UniversityZonguldakTurkey Division of Rheumatology Department of Internal MedicineÇorum Hitit UniversityÇorumTurkey Department of Physical Medicine and Rheabilitation Bülent Ecevit UniversityZonguldakTurkey

Takayasu arteritis is a large vessel vasculitis of the young women with giant cells and granuloma formation. The diagnosis and management of the disease are really not so easy because of the insidious onset and the difficulties in assessment of disease activity. Nearly 60% of the patients are corticosteroid resistant or dependent and relapses are very frequent during taper of the dose [1]. The novel biologic agents as Anti-TNF, Rutiximab and Tocilizumab provide acceptable response rates with low toxicity. Herein, we reviewed the efficacy of Tocilizumab in Takayasu arteritis.

关键词： Takayasu Arteritis Tocilizumab Corticosteroid