241 research outputs found
"Asset Poverty in The United States: Its Persistence in an Expansionary Economy"
No full textFrom this paper's Preface, by Dr. Dimitri B. Papadimitriou, President: Economic growth and a rising stock market in the 1990s gave the impression that everyone was accumulating wealth and asset poverty rates were declining. The impression was supported by the official, income-based poverty measure, which exhibited a sharp decline. According to Senior Scholar Edward N. Wolff and Research Scholar Asena Caner, poverty measures should include wealth as well as income. Their study of asset poverty in the United States between 1984 and 1999 focuses on the lower end of the wealth distribution and shows that asset poverty rates did not decline during the period studied, and that the severity of poverty increased. It also shows that asset poverty is much more persistent than income poverty.
Process length variation in cysts of a dinoflagellate, Lingulodinium machaerophorum, in surface sediments: Investigating its potential as salinity proxy
No full text“Many authors have contributed to writing this paper. Those listed in the metadata are: the main/contact author, the first listed author and Brunel University author(s). For a full list of the authors, please see the PDF version.”A biometrical analysis of the dinoflagellate cyst Lingulodinium machaerophorum (Deflandre and Cookson 1955) Wall, 1967 in 144 globally distributed surface sediment samples revealed that the average process length is related to summer salinity and temperature at a water depth of 30 m by the equation (salinity/temperature) = (0.078*average process length + 0.534) with R² = 0.69. This relationship can be used to reconstruct palaeosalinities, albeit with caution. The particular ecological window can be associated with known distributions of the corresponding motile stage Lingulodinium polyedrum (Stein) Dodge, 1989. Confocal laser microscopy showed that the average process length is positively related to the average distance between process bases (R²=0.78), and negatively related to the number of processes (R²=0.65). These results document the existence of two end members in cyst formation: one with many short, densely distributed processes and one with a few, long, widely spaced processes, which can be respectively related to low and high salinity/temperature ratios. Obstruction during formation of the cysts causes anomalous distributions of the processes. From a biological perspective, processes function to facilitate sinking of the cysts through clustering
Application of the Contour Method in Cold Rolled Aluminum Plates
No full textSon zamanlarda popüler olan kontur metodu, herhangi bir parçanın enine kesitinden artık gerilmeleri ölçebilmektedir. Bu metot, diğer tekniklerde olduğu gibi herhangi bir tersinir hesaplamaya gerek duymadan 2 boyutlu gerilme haritasını verebilir. Kontur metodu ucuzdur, basittir ve birçok uygulama alanına sahiptir. Dahası, delik delme ve nötron kırınımı gibi tekniklere karşın ölçüm derinliği kontur metodu için kısıtlı değildir. Bu çalışma, soğuk haddelenmiş bir alüminyum plaka üzerinde kontur metodunun bir uygulamasını sunmaktadır. Bu tezde, kalıntı gerilmeleri kontur metodu yardımıyla belirlemek için iki adet AA 5083 numunesi kullanılmıştır. Numuneler, kıvılcımla malzeme işleme yöntemi ile ikiye kesilmiş ve daha sonra kesilen yüzeylerde bulunan konturlar odak değişimi tekniği kullanılarak optik yüzey ölçümü yapan bir makine tarafından ölçülmüştür. Elde edilen veriler MATLAB yazılımı kullanılarak işlemden geçirilmiştir. Veri işleme sonrasında ölçülen konturların tersleri sonlu elemanlar modeline uygulanmış ve kalıntı gerilmelerin iki boyutlu haritasına ulaşılmıştır. Elde edilen gerilme dağılımı profilleri, doğrulanması için dilme ve halka çekirdek yöntemlerinden elde edilen sonuçlarla karşılaştırılmış ve dilme yöntemi ile iyi bir uyum sağlanmıştır. Ayrıca, kontur metodu ile elde edilen gerilme dağılım profili, soğuk haddeleme işleminden sonra beklenen gerilme yapısına uygun olmuştur. Sonuçlar halka çekirdek metodu ile karşılaştırıldığında bazı farklılıklar ortaya çıksa da gerilme profillerinin benzer bir eğilim gösterdiği gözlemlenmiştir.The recently popular contour method can measure residual stresses through cross section of any part. The contour method can give 2D stress map without any inverse calculation as other techniques do. It is cheap, simple and has many applications. Moreover, measurement depth is not limited by contrast with other techniques such as hole drilling and neutron diffraction. This study presents an application of the contour method on a cold rolled aluminum plate. In this thesis, two AA 5083 specimens were used to determine the residual stresses by the contour method. The specimens were cut in two by using wire-Electric Discharge Machining (w-EDM) and then, the contours from the cut surfaces were measured by an optical surface profiler using the focus variation technique. The obtained data were processed by MATLAB software. After data processing, inverse of the measured contours were applied to a FE model and a 2D map of the residual stress was attained. The stress distribution profiles were compared to the results obtained from Slitting and Ring Core methods for verification and a good agreement with Slitting Method was achieved. Also, the stress distribution profile from the Contour Method was according to the expected stress distribution after a cold rolling process. Although there were some differences with Ring Core Method, similar trends were observed
A multi-dimensional assessment of internet gaming disorder in children and adolescents: A case-control study
No full textBACKGROUND: Internet gaming disorder (IGD) leads to social disturbances and isolation, neglect of daily responsibilities, behavioral disorders, and physical impairments.OBJECTIVE: This study aimed to investigate the effect of IGD on spine biomechanics, range of motion in the neck and low back, and lung functions and respiratory muscle strength in children and adolescents.METHODS: Sixty-four children and adolescents with IGD (Group I) and 41 healthy controls (Group II) were included in the study. The outcomes were assessed with the Visual Analogue Scale (VAS), Internet Addiction Scale, active range of motion (AROM) in the neck and lumbar spine, posture and spinal alignment, lung function tests, and respiratory muscle strength.RESULTS: There is a significant difference in pain intensity at rest, during activity, and daily sitting time between groups (p < 0.05). Craniovertebral angle, shoulder asymmetry, thoracic kyphosis angle, cervical extension and rotation, and right lumbar rotation significantly decreased in Group I than in Group II (p < 0.05). Besides, the PEF, FEF 25-75%, and respiratory muscle strength were lower in Group I than in Group II (p < 0.05). With a multiple linear regression model, MEP, FEV1, and weekly time spent playing online games were significant predictors of internet addiction intensity (R-2 = 0.28; p = 0.02, p = 0.01, and p < 0.001, respectively).CONCLUSION: Postural misalignment and increased sedentary time cause physical health deterioration and negatively affect lung functions in children and adolescents with IGD. Consequently, considering both psychological and physical health is necessary to assess the problematic nature of internet gaming. A comprehensive assessment and multidisciplinary team approach is essential to managing the IGD
Low volume store planning for workload balancing and truckload
No full textOkutkan, Caner (Dogus Author) -- Çelepçıkay, Ömer (Dogus Author) -- Çimen, Egemen Berki (Dogus Author)In this study, it is aimed to decrease the number of days planned to be shipped in stores with low sales volume, to create a balanced work load and to increase vehicle occupancy capacity . Particularly, Less than Truckload problem is analyzed and model in this study. The techniques used in this study showed that adaptability can be achieved with shipment and store planning as well as green supply chain environment to minimize Less than Truckload (LTL) as well as gas consumption. A mathematical model was created in the direction of multi objective problem and solved in the GAMS environment. Moreover, scenario analyzes were made and the study was tested on five specially identified regions on Turkey
Evaluation of SLC6A2 and CYP2D6 Polymorphisms’ Effects on Atomoxetine Treatment in Attention Deficit and Hyperactivity Disorder
No full textBackground There is insufficient replicated data to establish a relationship between the polymorphisms of SLC6A2 and
CYP2D6 and the treatment responses of atomoxetine (ATX) in ADHD. We focused on evaluating the effect of top-line
single nucleotide polymorphisms (SNPs) in SLC6A2 and CYP2D6 on the ATX treatment response in attention deficit and
hyperactivity disorder (ADHD).
Methods Of 160 patient records, 34 patients who met the inclusion criteria were evaluated to determine the relationship
between genotypes of ten SNPs (six of SLC6A2 and four of CYP2D6) and ATX treatment response. Additionally, the connection
between SNPs of CYP2D6 and the severity of side effects associated with ATX was analyzed in 37 patients, including
the 34 study patients, and three patients discontinued because of ATX-dependent side effects.
Results All six polymorphisms we studied in SLC6A2 were associated with the treatment response of ATX. Clinical improvement
in oppositional defiant disorder symptoms of patients with ADHD was only observed in carriers of the homozygous
“C” allele of rs3785143 (podd = 0.026). We detected an association between higher CGI-side-effect severity scores and the
“TT” genotype of rs1065852 polymorphism in CYP2D6 (p = 0.043).
Conclusions The findings of this study suggest that genotypes of polymorphisms within the SLC6A2 and CYP2D6 may play
an influential role in treatment response or the severity of side effects associated with ATX in ADHD patients
Investigation of soil gas radon changes on Manisa fault
No full textYer kabuğunun alt katmanlarında üretilen ve atmosfere doğru göç eden radon gazı yer kabuğu hareketlerinin incelenmesinde kullanılan önemli bir ön izleyicidir. Yapılan çalışmalar depremler ve volkanik patlamalarla öncesinde ve sonrasında radon konsantrasyonlarında düzensizlikler meydana geldiğini göstermiştir. Bu sebeple radon gazı fay hatları ve volkanlar çevresinde birçok ön izleyici gibi sürekli olarak takip edilmektedir. Bu proje kapsamında Türkiye diri fay haritasında yer alan ve Gediz Grabenin batı ucunu oluşturan Manisa Fayı üzerinde toprak gazı radon konsantrasyonları periyodik olarak ölçülmüş ve radon konsantrasyonlarının depremsellikle olan ilişkisi incelenmiştir.Radon gas, which is produced in the deep layers of the earth's crust and migrates into the atmosphere, is a vital precursor used in the study of the earth's crust movements. Studies have shown anomalies in radon concentrations before, during and after earthquakes and volcanic eruptions. For this reason, radon gas is continuously monitored around the fault lines and volcanoes as well as many precursors. In this project, located in Turkey active fault and soil gas on the Gediz Graben Fault forms the western end of Manisa on the map of radon concentrations were measured periodically, and relationship with seismic activity of radon concentration were investigated
From Poster Presentation to Publication: National Congress of Child and Adolescent Psychiatry
No full textIntroduction: The aims of this study were as follows: 1) to determine publication rate, time to publication, and study design of poster presentations accepted at the National Congress of Child and Adolescent Psychiatry (NCCAP) and converted to publication and the degree of first author in a published article and journal index and 2) to investigate the relationship of these data with each other
Evaluation of prioritization methods in child mental health services
No full textAmaç: Bu çalışmanın amacı çocuk ve ergen psikiyatrisi polikliniğine başvuran olgularda öncelik belirleme yöntemlerinin değerlendirilmesidir. Yöntem: Çalışma grubundaki 5-18 yaş arası 900 hasta ve/veya ebeveynlerine Güçler ve Güçlükler Anketi (GGA), Çocuk ve Gençler için Davranış Değerlendirme Ölçeği (ÇDDÖ), Kendini Değerlendirme Ölçeği (KDÖ) formları uygulanmıştır. Hekim, klinik değerlendirmesi sonucunda hastaları yönlendirmiş ve Çocuk Ruh Sağlığı Öncelik Ölçütleri (ÇRSÖÖ) ve Görsel Analog Skala (GAS) formlarını doldurmuştur. Yapılan klinik değerlendirme sonucunda öncelikli olarak izlem planlanan hastalar ile öncelikli olmayan hastaların ölçek puanları karşılaştırılmıştır. Bulgular: Öncelikli olmayanlar ile karşılaştırıldığında (n=649), öncelikli olguların (n=251) ÇDDÖ ve KDÖ problem puanları ve GGA puanları anlamlı düzeyde yüksek, ÇDDÖ Okul yeterlik puanı dışındaki tüm ÇDDÖ ve KDÖ yeterlik puanları anlamlı düzeyde düşük bulunmuştur. Çalışma grubundaki olguların ÇRSÖÖ ve GAS puanları arasında çok güçlüæ ÇRSÖÖ ve GAS puanları ile GGA, ÇDDÖ ve KDÖ problem puanları arasında orta derecede anlamlı pozitif korelasyon saptanmıştır. Değişik kesim noktalarında ÇRSÖÖ ve GAS puanları hekim yönlendirmeleriyle orta derecede tutarlı bulunmuştur. ÇRSÖÖ ve GAS'ın ‘öncelikli' yönlendirilmeyi öngörme gücünün yüksek olduğu saptanmıştır. Sonuç: ÇRSÖÖ'nün nesnel bir değerlendirme yöntemi olarak klinik değerlendirmeyi destekleyebileceği düşünülmüştür. Anahtar kelimeler: Çocuk ve ergen psikiyatrisi, Öncelik değerlendirmesi, Görsel Analog Skala Aim: This study aims to evaluate prioritization methods in patients who consult child and adolescent psychiatry clinics. Method: Strengths and Difficulties Questionnaire (SDQ), Child Behaviour Checklist (CBCL), and Youth Self Report (YSR) forms were filled out by 900 patients of age 5 to 18 and/or their parents. After triage assessments, the attending clinician filled out Children's Mental Health Priority Criteria Tool (CMHPCT) and Visual Analogue Scale (VAS). Scales scores of the patients in need of an urgent appointment as identified through the triage were compared with those of non-urgent ones. Results: When compared with the non-urgent ones (n=649), the CBCL and YSR problem scores and SDQ scores of the urgent patients (n=251) were found to be significantly higher, while all the CBCL and YSR competence scores except CBCL school competence score were found to be significantly lower. A very high positive correlation was determined between the CMHPCT and VAS scores of the patients in the study, while a significant moderate correlation was found between CMHPCT and VAS scores and SDQ, CBCL, and YSR scores. CMHPCT and VAS scores were found moderately consistent with clinician categorizations at different cut-off points. CMHPCT and VAS scores have high predictive power on categorization of cases as urgent. Conclusion: It was concluded that CMHPCT may support clinical assessments as an objective assessment method. Keywords: Child and adolescent psychiatry, Priority evaluation, Visual Analogue Scal
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