Evaluation and improvement of proactive customer notification in e-commerce environment

Thesis (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering; in conjunction with the Leaders for Manufacturing Program at MIT, 2005.Includes bibliographical references (p. 53).The Internet, and thus e-commerce, both Business to Consumer (B2C) and Business to Business (B2B), has changed the way companies do business with each other and communicate with their customers. Because of the speed of the Internet, information transfer both among companies and between a company and its customers has become faster, albeit technologically more complex, in the e-commerce era. It has been a challenge for e-companies to develop creative, satisfying ways of communicating with their customers. After all, the Internet is approximately a decade old, and there has not been enough accumulation of knowledge about customer behavior. Unlike in conventional shopping where the customer takes the product with him/her or makes specific delivery arrangements in a specific geographical zone, in e-commerce the customer picks a specific delivery method from literally anywhere in the world at any time. This, of course, brings many logistical challenges for a successful delivery. Dell Computer Corporation, famous for its build-to-order and direct model, is one of the biggest e-commerce companies in the world and, thus, faces the challenges that any e- commerce company must confront, such as communicating with customers efficiently in a timely manner. Therefore, such logistical challenges that the e-commerce era has brought are not unique to Dell. One such challenge is effective communication with the customer after a shipment is just processed. This thesis focuses on finding best-of-breed technologies and applications in the proactive customer notification field through benchmarking.(cont.) This thesis also offers a tool to evaluate various technology providers and to make decisions based on the analysis.by Ömür Sedat Kaya.S.M.M.B.A

An Unusual Appearance of Double Right Coronary Artery

Double right coronary artery (RCA) is an extremely rare coronary artery anomaly. We aimed to report an atherosclerotic double RCA which appeared after primary percutaneous intervention performed to treat acute inferior myocardial infarction. This is the first case in the literature, which the coronary arteries that can be accepted as double RCA have been hidden by total atherosclerotic occlusion of the proximal part of the RCA. In this paper, also the definition, correct diagnosis, and appropriate diagnostic methods for double RCA were discussed

Assessments of anxiety levels and working conditions of health employees working in COVİD-19 pandemic hospitals

The study aims to identify health care workers’ risk of COVID-19 and to determine employees’ views on working conditions and the fight against COVID-19 in general, and to present their concerns. The study utilized a survey form developed by researchers as a data collection tool. The research was conducted on 736 health workers in the Turkish population using the online survey method. Descriptive statistical methods, chi-square analysis, and correlation analysis were used in the analysis of the data. The data was carried out in a 95% confidence range. According to the study’s findings, 31.7% of the health care workers involved in the study had contact with 19 cases of COVID-19; 27.3% provided services to patients diagnosed with COVID-19. There is a relationship between the professional groups of health care workers who have been contacted by COVID-19 cases and the professional groups of those who provide services. Among the participants, only 35 people had a diagnostic test, 15 of which were positive for COVID-19 results. Although health care workers find working conditions and authorities to be moderate in tackling COVID-19, their anxiety levels are high. Although health care workers provide services to COVID-19 diagnosed patients, they are not protected against the risk of infection by adequate testing. The risk of transmission threatens more groups of nurses. Considering that COVID-19 is a global threat, measures should be taken to protect health care workers and their families and professional support should be given to address their concerns. © 2020 by Author/s and Licensed by Modestum Ltd., UK

Case Report: Anaesthetic Approach For Emergency Surgery In A Patient With Acute Myocardial Infarction

In this case report, we examined anaesthetic approach for emergency surgery in a patient with acute myocardial infarction and stomach perforation at the same time.Anaesthesia was induced with midazolam, propofol, fentanyl and vecuronium, and maintained with sevoflurane 1-2% in 100% oxygen, fentanyl and vecuronium. Patient controlled analgesia with morphine was used for postoperative analgesia. At postoperative 17th day, the patient was discharged from the hospital as health

Risperidone-Induced Renal Damage and Metabolic Side Effects: The Protective Effect of Resveratrol

Objective. The aim of the study was to investigate the possible protective qualities of resveratrol (RSV) against the side effects of risperidone (RIS) in an experimental model in rat kidneys with histologic and biochemical assessments. Materials and Methods. Experimental procedures were performed on 35 female Sprague Dawley rats. Rats were randomly divided into five groups: control, untreated rats (n=7) were in group 1; group 2 was given 2 mg/kg/day RIS (n=7); group 3 was treated with 2 mg/kg/day RIS and 20 mg/kg/day RSV (n=7); group 4 was treated with 2 mg/kg/day RIS and 40 mg/kg/day RSV (n=7); and group 5 was treated with 2 mg/kg/day RIS and 80 mg/kg/day RSV (n=7). All treatments were administered for two weeks by gavage. On treatment day 15, kidney tissues were removed for analysis. Results. The results showed that RSV treatment reduced weight gain induced by RIS. In addition, RSV increased the total antioxidant status (TAS) and decreased serum creatinine (Cr), blood urea nitrogen (BUN), oxidative stress index (OSI), and total oxidant status (TOS) levels significantly (p<0.05). Conclusion. This study revealed that treatment with RSV might protect kidney tissues against the side effects of RIS. RSV could be an effective course of therapy to enhance therapeutic efficacy

Investigation of atypical agents in respiratory tract infections

Bu prospektif çalışmada, yaklaşık 1 yıllık bir sürede (Ocak 1999-Mayıs 2000) solunum yolu infeksiyonlarının etyolojik tanısı için 7 viral ve 3 atipik bakteriye ait antijenler immünfloresan yöntemle araştırılmıştır. Solunum yolu infeksiyonu semptomu olan pediatrik (grup l, 76 olgu) ve erişkin (grup II, 135 olgu) yaş grubundaki hastalarda, solunum yolu sekresyonları elde edilmiştir. Etyolojik tanı; pediatrik olgularda %45.4, erişkin olgularda ise %67.3 oranında konulmuştur. Grup l ve grup ll'de sırasıyla; Chlamydia pneumoniae %17.8, %13.3; Mycoplasma pneumoniae %0, %9.6; influenza A virüsü %3.9, %16.3; adenovirüs %3.9, %14.8; parainfluenza virüs tip 1 %5.3, %7.4; respiratuar sinsityal virüs %9.2, %1.5; parainfluenza virüs tip 2 %3.9, %3.0 ve influenza B virüs %1.3, %1.5 oranlarında tespit edilmiştir. Hastaların %2.6 ve %3.9'unda birden fazla etken bulunurken, parainfluenza virüs tip 3 ile Legionella pneumophila'ya ait antijen tespit edilmemiştir. Kullanılan immünfloresan yöntemin etyolojik tanıya katkısı ve sonuçların rasyonel antibiyotik kullanımına etkisi tartışılmıştır.In this prospective study, 7 viral and 3 atypical bacteria antigens were investigated by immunofluorescence method during January 1999-May 2000 for the etiological diagnossis of respiratory tract infections. Respiratory tract secretions were obtained from children (group I, 76 cases) and adults (group II, 135 cases) who had symptoms of respiratory tract infections. Etiological diagnosis was reported as 45.4% in pediatric cases and 67.3% in adults. In group I and group II; the rates of Chlamydia pneumoniae was 17.8%, 13.3%; Mycoplasma pneumoniae 0%, 9.6%; influenza A virus 3.9%, 16.3%; adenovirus 3.9%, 14.8%; parainfluenza virus type 1 5.3%, 7.4%; respiratory syncytial virus 9.2%, 1.5%; parainfluenza virus type 2 3.9%, 3.0%; and influenza B virus 1.3%, 1.5% respectively. In 2.6% and 3.9% of the patients in two groups two or more etiological agents were identified. Parainfluenza virus type 3 and Legionella pneumophila antigens could not be determined in any of the patients. The advantage of immunofluorescence method for the etiological diagnosis and the effect of results to the rational antibiotic use were discussed

Investigation of atypical agents in respiratory tract infections

Bu prospektif çalışmada, yaklaşık 1 yıllık bir sürede (Ocak 1999-Mayıs 2000) solunum yolu infeksiyonlarının etyolojik tanısı için 7 viral ve 3 atipik bakteriye ait antijenler immünfloresan yöntemle araştırılmıştır. Solunum yolu infeksiyonu semptomu olan pediatrik (grup l, 76 olgu) ve erişkin (grup II, 135 olgu) yaş grubundaki hastalarda, solunum yolu sekresyonları elde edilmiştir. Etyolojik tanı; pediatrik olgularda %45.4, erişkin olgularda ise %67.3 oranında konulmuştur. Grup l ve grup ll'de sırasıyla; Chlamydia pneumoniae %17.8, %13.3; Mycoplasma pneumoniae %0, %9.6; influenza A virüsü %3.9, %16.3; adenovirüs %3.9, %14.8; parainfluenza virüs tip 1 %5.3, %7.4; respiratuar sinsityal virüs %9.2, %1.5; parainfluenza virüs tip 2 %3.9, %3.0 ve influenza B virüs %1.3, %1.5 oranlarında tespit edilmiştir. Hastaların %2.6 ve %3.9'unda birden fazla etken bulunurken, parainfluenza virüs tip 3 ile Legionella pneumophila'ya ait antijen tespit edilmemiştir. Kullanılan immünfloresan yöntemin etyolojik tanıya katkısı ve sonuçların rasyonel antibiyotik kullanımına etkisi tartışılmıştır.In this prospective study, 7 viral and 3 atypical bacteria antigens were investigated by immunofluorescence method during January 1999-May 2000 for the etiological diagnossis of respiratory tract infections. Respiratory tract secretions were obtained from children (group I, 76 cases) and adults (group II, 135 cases) who had symptoms of respiratory tract infections. Etiological diagnosis was reported as 45.4% in pediatric cases and 67.3% in adults. In group I and group II; the rates of Chlamydia pneumoniae was 17.8%, 13.3%; Mycoplasma pneumoniae 0%, 9.6%; influenza A virus 3.9%, 16.3%; adenovirus 3.9%, 14.8%; parainfluenza virus type 1 5.3%, 7.4%; respiratory syncytial virus 9.2%, 1.5%; parainfluenza virus type 2 3.9%, 3.0%; and influenza B virus 1.3%, 1.5% respectively. In 2.6% and 3.9% of the patients in two groups two or more etiological agents were identified. Parainfluenza virus type 3 and Legionella pneumophila antigens could not be determined in any of the patients. The advantage of immunofluorescence method for the etiological diagnosis and the effect of results to the rational antibiotic use were discussed

Effect of Caffeic Acid Phenethyl Ester on Vascular Damage Caused by Consumption of High Fructose Corn Syrup in Rats

Fructose corn syrup is cheap sweetener and prolongs the shelf life of products, but fructose intake causes hyperinsulinemia, hypertriglyceridemia, and hypertension. All of them are referred to as metabolic syndrome and they are risk factors for cardiovascular diseases. Hence, the harmful effects of increased fructose intake on health and their prevention should take greater consideration. Caffeic Acid Phenethyl Ester (CAPE) has beneficial effects on metabolic syndrome and vascular function which is important in the prevention of cardiovascular disease. However, there are no known studies about the effect of CAPE on fructoseinduced vascular dysfunction. In this study, we examined the effect of CAPE on vascular dysfunction due to high fructose corn syrup (HFCS). HFCS (6 weeks, 30% fed with drinking water) caused vascular dysfunction, but treatment with CAPE (50 micromol/kg i.p. for the last two weeks) effectively restored this problem. Additionally, hypertension in HFCS-fed rats was also decreased in CAPE supplemented rats. CAPE supplements lowered HFCS consumption-induced raise in blood glucose, homocysteine, and cholesterol levels. The aorta tissue endothelial nitric oxide synthase (eNOS) production was decreased in rats given HFCS and in contrast CAPE supplementation efficiently increased its production. The presented results showed that HFCS-induced cardiovascular abnormalities could be prevented by CAPE treatment

Konwencjonalna i płynna cytologia – badania porównawcze

Objectives: The aim of our study is the comparison of the results of conventional smear (CC) technique and liquidbased cytology (LBC) technique used as cervical cancer screening methods. Material and methods: The results of 47954 patients submitted to smear screening in our gynecology clinic between January 2008 and December 2014 have been studied. The smear results have been divided into two groups CC and LBC according to the technique used. Results: When considering the distribution within CC group, the results were as follows: intraepithelial cell abnormalities 2,0% (n=619), insufficient sample for analysis 2,1% (n=660), Atypical squamous cells of undetermined significance (ASC-US) 1.8% (n=554), Low grade squamous intraepithelial lesion (LGSIL) 0.1% (n=35), High grade squamous intraepithelial lesion (HGSIL) 0.1% (n=16), Atypical squamous cells – cannot exclude HGSIL (ASC-H) 0.029% (n=9), Atypical glandular cells- not other wise specified (AGC-NOS) 0.012% (n=4), squamous carcinoma 0.003% (n=1). When considering the distribution in LBC group, the results were as follows: intraepithelial cell abnormalities2.1% (n=357), insufficient sample for analysis 0.9% (n=144), ASC-US 1.8% (n=296), LGSIL 0.2% (n=38), HGSIL 0.1% (n=8), ASC-H 0.1% (n=10), AGC-NOS 0.017% (n=3), squamous carcinoma 0.011% (n=2). Conclusions: Although the rates of epithelial cell abnormalities are similar for both tests, LSIL results are more frequently observed in LBC technique. In LBC technique, the number of insufficient sample for analysis is quite low compared to CC group and thus constitutes an advantage.  Cel pracy: Celem badania było porównanie wyników konwencjonalnej (CC) i płynnej cytologii (LBC) stosowanej w skriningu raka szyjki macicy. Materiał i metoda: Przeanalizowano wyniki od 47954 pacjentek objętych cytologicznym badaniem skriningowym w naszym oddziale ginekologicznym w okresie od stycznia 2008 do grudnia 2014. Wyniki cytologiczne podzielono na dwie grupy CC i LBC w zależności od techniki pobierania. Wyniki: W grupie CC wyniki przedstawiały się nastepująco: nieprawidłowości komórek śródnabłonkowych 2,0% (n=619), nieodpowiednia próbka do analizy 2,1% (n=660), ASC-US 1.8% (n=554), LGSIL 0.1% (n=35), HGSIL 0.1% (n=16), ASC-H 0.029% (n=9), AGC-NOS 0.012% (n=4), rak płaskonabłonkowy 0.003% (n=1). W grupie LBC wyniki przedstawiały się następująco: nieprawidłowości komórek śródnabłonkowych 2.1% (n=357), nieodpowiednia próbka do analizy 0.9% (n=144), ASC-US 1.8% (n=296), LGSIL 0.2% (n=38), HGSIL 0.1% (n=8), ASC-H 0.1% (n=10), AGC-NOS 0.017% (n=3), rak płaskonabłonkowy 0.011% (n=2). Wnioski: Chociaż odsetek nieprawidłowości komórek śródnabłonkowych jest podobny dla obu testów, wyniki LSIL są częściej obserwowane w technice LBC. W metodzie LBC liczba próbek nieodpowiednich do analizy jest dość niska w porównaniu do grupy CC, stąd jest to jej niewątpliwa zaleta.

Etiology, diagnosis, and treatment in childhood atelectasis

Introduction: Atelectasis is the loss of lung volume secondary to collapse. Narrow and collapsible airways and underlying chronic diseases facilitate the development of atelectasis in children. Since atelectasis is an important cause of morbidity and mortality in children, early diagnosis and treatment are of great importance. Methods: Thirty-six patients who were followed up in the pediatric service and pediatric intensive care unit of our clinic be - tween December 1, 2018, and June 1, 2019, and were diagnosed radiologically with atelectasis were evaluated retrospectively. Results: The median age was 1.85 years (1.0–7.37). The most common cause for hospitalization was pneumonia (n=30, 83%). Except for two patients, all patients had an underlying disease that increased the risk of atelectasis. Neurological diseases were the most common diseases among the underlying diseases (n=12, 36%). For the treatment, 4 (11.1%) patients received chest physiotherapy, 19 (52.7%) patients received nebulized medications, and chest physiotherapy, and 13 (36.1%) patients received positive end-expiratory pressure support in addition to these treatments. The frequency of atelectasis in more than one localization was higher in children with the neurological disease than in other patients (n=7, [54%] vs. n=3, [13%]; p=0.018). In patients with atelectasis in more than one localization, the duration of hospitalization was longer (median 12.5 days [9.5–16.75] vs. 19 days [13–22.75]; p=0.034). Discussion and Conclusion: Atelectasis is common in hospitalized children with an underlying disease. In the presence of pathological respiratory symptoms and signs, atelectasis should be kept in mind, and treatment should be started early