Integrated Workforce Capacity and Inventory Management Under Labour Supply Uncertainty

In a manufacturing environment with volatile demand, inventory management can be coupled with dynamic capacity adjustments for handling the fluctuations more effectively. In this study, we consider the problem of integrated capacity and inventory management under non-stationary stochastic demand and capacity uncertainty. The capacity planning problem is investigated from the workforce planning perspective where the capacity can be temporarily increased by utilising contingent workers from an external labour supply agency. The contingent capacity received from the agency is subject to an uncertainty, but the supply of a certain number of workers can be guaranteed through contracts. There may also be uncertainty in the availability of the permanent and contracted workers due to factors such as absenteeism and fatigue. We formulate a dynamic programming model to make the optimal capacity decisions at a tactical level (permanent workforce size and contracted number of workers) as well as the operational level (number of workers to be requested from the external labour supply agency in each period), integrated with the optimal operational decision of how much to produce in each period. We analyse the characteristics of the optimal policies and we conduct an extensive numerical analysis that helps us provide several managerial insights

Postoperative complications and its relationship with the severity of postoperative pain in patients undergoing thoracic surgery

Aim: To investigate the complications that occur in our patients who underwent thoracic surgery, as well as the relationship between postoperative pain and complications. Method: Of the 117 patients who underwent surgery between January 2018 and December 2018, there were 99 patients with pain and the other parameters whose data’s were complete. Medical records of the patients were investigated in terms of age, gender, smoking status and frequency, diagnosis, treatment, length of stay in the hospital, postoperative complications and visual analog scale (VAS). The postoperative complications and VAS values were compared statistically. Results: The mean age of the patients was 50.52±18.46 years, 26 (26.3%) patients were female and 73 (73.7%) were male. The average length of stay in hospital was 4.08±3.06 days and average pain severity was 3.92±2.07. The most common diagnosis in our cases was lung cancer, and the most common complication was prolonged air leakage. There was a significant relationship between the severity of pain and the presence of postoperative complications in our patients (p=0.001). However, the correlation relationship was found to be low (r=0.322). Conclusion: The results of our study revealed that optimal postoperative pain control is an important factor for preventing postoperative complications

The effect of behavior problems ın reducing team of sport soccer with behavior ın boys ın orphanegesYetiştirme yurtlarında kalan sosyal uyum problemi olan erkek çocukların uyum problemlerinin düzeltilmesinde takım sporlarından futbolun etkisi

In this study, "Men With Behavior Problems remaining in Orphanages in Reducing Children's Behavior Problems of Team Sports Football 's Effect" is aimed to investigate. Football 's children also express their feelings was to determine the effect on. Designated for the purpose ,in the range of 7-11 years , Aydın Provincial Directorate of Social Services and Child Protection Agency in the dormitory of the 15 remaining children 's experiment , 14 percent controlled study was conducted with a total of 29 children . Finally, to make an evaluation study enrolled all the responsible parents of children staying abroad for the first test and post-test were applied , including social adjustment scale . The results of this test were performed with the SPSS program. To the comparison of the mean difference between groups Mann-Whitney U test to Nan- Par , to the comparison of intra-group mean difference in the Wilcoxon Nan Par test were examined. As a result, in orphanages, behavior problems of children with a team sport, football to participate in behavior problems in the reduction (* p <0.05) significance level and (* p <0.01) significance level was significant was found. ÖzetBu araştırmada “Yetiştirme yurtlarında kalan sosyal uyum problemi olan erkek çocukların uyum problemlerinin düzeltilmesinde takım sporlarından futbolun etkisi”ni araştırmak amaçlanmıştır. Araştırma evrenini, sosyal hizmetler ve çocuk esirgeme kurumu Aydın il müdürlüğüne bağlı çocuk yuvası ve kız yetiştirme yurdunda kalan; 9–11 yaş aralığındaki sosyal uyum ve davranış bozukluğu olan erkek çocuklar oluşturmaktadır. Araştırma örneklemi ise iki aşamada belirlenmiştir. Birinci aşamada; araştırma evrenin içinden kurum psikoloğu ve çocuk gelişim uzmanı tarafından, sosyal uyum ve davranış bozukluğu olan toplam 29 (yirmi dokuz) erkek çocuk belirlenmiştir. İkinci aşamada ise; belirlenen yirmi dokuz (29) erkek çocuğun içinden araştırmacı tarafından basit tesadüfi yöntemle belirlenen on beş (15) çocuk ile deney grubu, on dört (14) çocuk ile de kontrol grubu oluşturulmuştur. Araştırma sonunda değerlendirme yapabilmek için deney ve kontrol grubunu oluşturan çocukların kaldıkları yurtta bu çocuklardan sorumlu olan bakıcı annelerine sosyal uyum ve davranış ölçeği ön-test ve son-test olarak uygulanmıştır. Bu testin sonuçları SPSS istatistik programı ile yapılmıştır. Gruplar arası sıra ortalaması farklarının karşılaştırmasına sıralı olmayan bağımsız değişkenlere Mann-Whitney U Nan-Par testle, Grup içi ortalama farklarının karşılaştırmasına ise Wilcoxon Nan Par testle bakılmıştır. Tip 1 hata için α= 0.05 ve 0.01 düzeyi alınmıştır. Sonuç olarak; yetiştirme yurdunda kalan, sosyal uyum ve davranış problemi olan çocukların davranış problemlerinin azalmasında ve uyumsal davranışlarının artmasında takım sporlarından olan futbolun *p< 0.05 ve **p< 0.01 düzeyinde etkili olduğu saptanmıştır

Pirit içerikli kayaçların basma dayanımı ve bazı fiziksel parametreleri arasındaki ilişkilerin araştırılması

This study focuses on the investigation of the relationships between physical parameters (cohesion (C), internal friction angle (), unit weight (UW), ultrasonic P wave velocity (UPV)) and pyrite content (Py, %) with rock strength (UCS). Polished section analyses of rocks were performed via Clemex image analysis system and motorized table which are integrated into the trinocular research microscope that is a modern technique. Correlation analysis was performed between UCS and Py. Statistically significant relation wasn’t obtained between the data pairs even though coefficient of correlation is relatively high (r=0.69). However, a statistically significant relationship (with p=0.003 and F=302.6) was achieved with high coefficient of determination (R2=0.936) when multivariate regression analysis was carried out between UCS and other parameters including “Py” used in this study.Bu çalışma, kayaçların fiziksel parametreleri (kohezyon (C), içsel sürtünme açısı (), birim hacim ağırlık (UW), ultrasonik P dalga hızı (UPV)) ve pirit içeriğinin (Py, %) kayaç basma dayanımı (UCS) ile arasındaki ilişkilerin incelenmesine odaklanmaktadır. Kayaçların parlak kesit analizleri, modern bir teknik olan trinoküler araştırma mikroskobuna entegre edilmiş Clemex görüntü analiz sistemi ve motorlu tabla ile gerçekleştirilmiştir. UCS ve Py arasında korelasyon analizi yapılmıştır. Korelasyon katsayısı (r=0.69) nispeten yüksek olmasına rağmen veri çiftleri arasında istatistik olarak anlamlı bir ilişki elde edilememiştir. Öte yandan, UCS ve bu çalışmada kullanılan pirit içeriği dahil diğer parametreler arasında çoklu regresyon analizi yapıldığında, istatistiksel açıdan önemli ve (p=0.003 and F=302.6) çok güçlü/yüksek determinasyon katsayısına (R2=0.936) sahip tahmin modeli elde edilmiştir

Çoklu zekâ kuramı ve kinestetik zekânın önemi

Education is a concept that day by day develops and open to innovations. With this meaning some new teaching theories come forward as a educaiton’s theoretical base and also its validity proves. One of these theories that comes the first rank is Professor Doctor Howard Gardner’s theory about multiple intelligence.The study  prepared with the help of the information in literature. For the improving the kinestetic intelligence, samples of  studies devoted to the physical education lessons presented in this research. With these apllications students that have the kinestetic intelligence and determined and physiological fundamentals of kinestetic awareness had exposed.Eğitim her geçen gün gelişip değişen ve sürekli yeniliklere açık olan bir kavramdır. Bu anlamda eğitimin kuramsal bazında yeni öğrenme teorileri ortaya atılmakta ve geçerliliği de ispatlanmaktadır. Bu teorilerden birisi olan Prof. Dr. Howard Gardner’in öne sürdüğü çoklu zeka kuramı da bunların başında gelmektedir.  Bu çalışma literatür tarama yöntemiyle hazırlanmış ve çoklu zeka kuramında bahsedilen sekiz zeka türü içinden kinestetik zeka alanının geliştirilmesi için beden eğitimi derslerine yönelik çalışma örnekleri sunulmuştur. Bu tür uygulamalarla kinestetik zekaya sahip öğrencilerin belirlenerek, beden eğitimi derslerinin bu alan gelişimdeki önemi ve kinestetik farkındalık fizyolojik temelleriyle desteklenerek ele alınmıştır

Recurrence rate of odontogenic keratocyst treated by enucleation and peripheral ostectomy : retrospective case series with up to 12 years of follow-up

Odontogenic keratocysts have been reported with high recurrence rates in the literature so various treatment modalities from simple enucleation to resection have been performed to achieve the cure. The purpose of this retrospective study was to investigate the recurrence rate of odontogenic keratocysts (OKCs) treated by enucleation and peripheral ostectomy. An electronic search of the database of the Hacettepe University, Faculty of Medicine, Department of Pathology, was undertaken to identify patients histologically diagnosed with OKCs treated at Department of Oral and Maxillofacial Surgery between 2001 and 2015. In total, 81 patients were studied. The mean age at the time of diagnosis was 42 years, and the male:female ratio was 1:0.7. OKCs were located primarily in the posterior mandibular region (41%). Twenty-seven patients were re-examined to determine the recurrence rate. The mean follow-up period was 5 years (range, 1?12 years). The recurrence rate was 14.8%. The relationship between location of the lesion and recurrence was not statistically significant (p = 0.559). There was also no statistically significant relation between the recurrence rate and treatment option of teeth involved in the lesion (p = 0.579). The authors conclude that treatment of OKCs by enucleation with peripheral ostectomy is associated with minimal morbidity and is preferred over other aggressive treatment modalities. Meticulous radiographic examination and careful surgical resection may decrease the recurrence rate of OKCs

Protective Effects of Beta Glucan and Gliclazide on Brain Tissue and Sciatic Nerve of Diabetic Rats Induced by Streptozosin

There have not been yet enough studies about effects of beta glucan and gliclazide on oxidative stress created by streptozotocin in the brain and sciatic nerve of diabetic rats. The aim of this paper was to investigate the antioxidant effects of gliclazide and beta glucan on oxidative stress and lipid peroxidation created by streptozotosin in brain and sciatic nerve. Total of 42 rats were divided into 6 groups including control, diabetic untreated (DM) (only STZ, diabetic), STZ (DM) + beta glucan, STZ (DM) + gliclazide, only beta glucan treated (no diabetic), and only gliclazide treated (no diabetic). The brain and sciatic nerve tissue samples were analyzed for malondialdehyde (MDA), total oxidant status (TOS), total antioxidant status (TAS), oxidative stress index (OSI), and paraoxonase (PON-1) levels. We found a significant increase in MDA, TOS, and OSI along with a reduction in TAS level, catalase, and PON-1 activities in brain and sciatic nerve of streptozotocin-induced diabetic rats. Also, this study shows that in terms of these parameters both gliclazide and beta glucan have a neuroprotective effect on the brain and sciatic nerve of the streptozotocin-induced diabetic rat. Our conclusion was that gliclazide and beta glucan have antioxidant effects on the brain and sciatic nerve of the streptozotocin-induced diabetic rat

Assessment of the left atrial volume index and plasma NT-proANP level in patients with acute ST-elevation myocardial infarction

OBJECTIVES: Acute ST-elevation myocardial infarction is associated with ventricular dysfunction due to ischemia-induced progressive myocardial damage. The decrease in ventricular compliance causes left atrial dilatation and stretching of the atrial myocardium, which are the main stimuli for the secretion of atrial natriuretic peptide. The aim of this study was to evaluate left atrial dimensions and atrial natriuretic peptide levels in patients early after their first acute ST-elevation myocardial infarction and assess the probable interaction between coronary lesions and these measurements. METHODS: A total of 110 patients with acute myocardial infarction and 50 controls were studied. Plasma atrial natriuretic peptide was measured at admission. Left ventricular function, diameter, and volume index were evaluated using transthoracic echocardiography. Gensini and vessel scores of the patients who underwent coronary angiography were calculated. RESULTS: Plasma atrial natriuretic peptide in the patients with myocardial infarction was increased compared with that in controls (3.90±3.75 vs. 1.35±0.72 nmol/L,