Supplier diversification under binomial yield

Cataloged from PDF version of article.We consider supplier diversification in an EOQ type inventory setting with multiple suppliers and binomial yields. We characterize the optimal policy for the model and show that, in this case, it does not pay to diversify, in contrast to previous results in the random yield literature. © 2008 Elsevier B.V. All rights reserved

The effect of progressive muscle relaxation training on anxiety levels and quality of life in dialysis patients

PubMed ID: 16898100Aim - To determine the effect of progressive muscle relaxation training (PMRT) on anxiety levels and quality of life (QoL) in dialysis patients. Methods - A total of 46 patients who had been treated with dialysis in the Dialysis Center of Ege University Medical Faculty Hospital were recruited. Data were collected by means of a questionnaire. Patients' Recognition Form (PRF), State and Trait Anxiety Inventory (STAI), and QoL-index for dialysis patients (QoLI-dialysis) were used to collect the necessary data. All three forms were utilised prior to PMRT and 6 weeks after completion of PMRT. Results - The mean state-anxiety score before and after PMRT was found as 43.4±4.3 and 28.9±2.8, respectively (P<0.001). Similarly, the mean trait-anxiety scores before and after PMRT were found as 43.6±9.5 and 31.1±6.5, respectively (P<0.001). When the QoLI-dialysis score was examined it was 28.7±3.2 before PMRT and 29.6±2.3 after PMRT (P<0.01). Conclusion - The results of the study demonstrate that PMRT for dialysis patients helps decrease state- and traitanxiety levels and has a positive impact on QoL

"Caregiver strain index" validity and reliability in Turkish society

Objective: The Caregiver Strain İndex (CSI) made up of 13 items was developed by Robinson (1983) and assesses the subjective care load of the caregiver. This study was conducted to evaluate its validity and reliability for Turkish society. Design: a cross-sectional descriptive study. Participants: 132 family members providing care for cancer patients Intervention: CSI was adopted for Turkey and administered twice via face-to- face interviews to 132 family members providing care for cancer patients from the Day Patient Unit of Ege University hospital. The content validity of the "Caregiver Strain Index" Kendall analysis was used while Pearson's moment Correlation Coefficient was applied for the test reset reliability of the scale and Cronbach's Alpha Interpretation statistical analysis tests for internal consistency and rotated factor loading of items of the scale. Results: Validity of the index was found to be 0.41 and test-retest reliability 0.75. While the Cronbach's alpha value of the index for first administration was 0.77, it was found to be 0.73 for the second administration. Conclusions: At the end of our study, validity and reliability of the index were established, indicating utility in studies for assessing the care load of individuals providing care to cancer patients in Turkish society

Assesment of the reactions of caregivers of a cancer patients: Valdty and reliability of the scale of "Your reactions helping your family member" in Turksh society

WOS: 000339909300011PubMed ID: 24061462Background: This study has been descriptively designed in order to evaluate the validity and reliability of the scale of "Your Reactions to Helping Your Family Member" for Turkish society. The scale that was developed by Archbold and Steward in 1983 being applied at caregivers is included within Family Care Inventory. Materials and Methods: The scale which is adapted for Turkey was applied to 132 caregivers of cancer patients, who are family members, twice by face-to-face interview method. Sample of the study consists of 132 caregivers of cancer patients who had outpatient treatment in chemotherapy unit of a university hospital in Izmir. Quantitative and percentage Ugur and Fadiloglu tests were used in the analysis of descriptive data regarding caregivers, Kendall W analysis was used to assess content validity of the scale, Pearsons Product Moment Correlation was used for test-retest reliability of the scale and Cronbach Alpha Analysis was used for internal consistency. Results: Validity of the scale was determined by using Kendalls Coefficient of Concordance (W: 0.62, p > 0.05) and it was evaluated as theres no difference ofopinion among the experts. Test-retest reliability coefficient between the first and the second application of the scale was found - as. 88. Conclusions: The scale which is ascertained to be valid and reliable as a result of our study can be used to assess the reactions of caregivers of cancer patients during the care giving period in Turkish society

Validity and reliability of a turkish version of the fecal incontinence quality of life scale

PubMed ID: 19752664PURPOSE: Anorectal disorders, including fecal incontinence, are a significant healthcare problem that produce bothersome symptoms and adversely affect quality of life. We sought to establish the validity and reliability of a Turkish language version of the Fecal Incontinence Quality of Life Scale (FIQOLS). SUBJECTS AND SETTING: Data were collected at the Fecal Incontinence-Constipation-Biofeedback Clinic, located in the Gastroenterology Department at Ege University School of Medicine Hospital in Izmir, Turkey. The study sample comprised patients with fecal incontinence who attended the clinical assessment and agreed to participate in the study. INSTRUMENTS: A sociodemographic questionnaire form, the 29-item FIQOLS, and the Fecal Incontinence Severity Index (FISI), as well as the 36-Item Short Form Health Survey (SF-36) were administered to subjects. Both the FIQOLS and FISI were translated from English to Turkish by using a back-translation technique. METHODS: Subjects initially completed the FIQOLS, FISI, and the SF-36 at baseline and again after a 2-week interval to allow test-retest reliability measurement. Internal consistency was also measured, using the Cronbach ? and Spearman-Brown split-half coefficients. Test-retest reliability was evaluated using interclass correlation coefficient testing. The validity of FIQOLS with respect to the SF-36 and FISI was analyzed using Pearson correlation coefficients. RESULTS: Fifty subjects with fecal incontinence participated in the study; their mean age (SD) was 57.1 (±15.7) years. Almost two-thirds (66%) were female, and 38% did not complete primary school education. Test-retest reliability analysis revealed an intraclass correlation of r value higher than 0.70 (P < .05). The overall Cronbach ? coefficient of instrument was .88; the Spearman-Brown split-half value was 0.84 for the first half of the tool and 0.76 for the second half. The Cronbach ? coefficient for subfactors varied from .56 to .82. The FIQOLS score was found to have a statistically significant (P < .05) correlation with both the FISI and SF-36. CONCLUSION: These findings support the Turkish language version of the FIQOLS as a valid and reliable instrument. © 2009 by the Wound, Ostomy and Continence Nurses

Effects of home-based cardiac exercise program on the exercise tolerance, serum lipid values and self-efficacy of coronary patients

Exercise-based cardiac rehabilitation improves exercise capacity and reduces cardiac risk factors. The purpose of this pilot study was to examine the effects of a home-based cardiac exercise program (HBCEP) on exercise tolerance, serum lipids, and self-efficacy in coronary heart disease patients in Turkey. Self-efficacy theory provided the framework for this study's intervention. The study design was a pre-test and post-test experimental, randomized assignment. The study included 30 participants in a home-based cardiac exercise program (HBCEP; mean age = 54.7 ± 7.8) and 30 in control (C; mean age = 52.7 ± 6.5). The Phase II cardiac exercise program included three 45-60-min sessions per week for 12 weeks, and the enhancement of self-efficacy through educational sessions and the use of goal setting, modelling, and physiological feedback strategies. Both groups were comparable in their medical regimen, exercise capacity, and other measured variables pre-intervention. At baseline and after 12 weeks, exercise capacity was evaluated by exercise testing using the Bruce Protocol, self-efficacy was measured with the Cardiac Exercise Self Efficacy Index, and serum lipid values were measured. At the completion of the 12-week exercise program, the exercise capacity (P<0.001), total cholesterol (P =0.004), triglycerides (P = 0.048), high-density lipoprotein-cholesterol (P = 0.001), low-density lipoprotein-cholesterol (P = 0.039), and self-efficacy (P<0.001) of the HBCEP Group were significantly improved compared to the control group. These results suggest that a first-time HBCEP in Turkey can be successful in having patients adhere to a prescribed exercise program and reduce risk factors. Enhanced self-efficacy may have mediated the improved behavioural outcomes. © 2006, European Society of Cardiology. All rights reserved

Examining the level of knowledge and practices regarding the use of biologic agents among nurses working in oncology and hematology clinics at a university hospital [Bir üniversite hastanesinin onkoloji ve hematoloji kliniklerinde çali{dotless}şan hemşirelerin biyolojik ajan kullani{dotless}mi{dotless} ile ilgili bilgi ve uygulamalari{dotless}ni{dotless}n incelenmesi]

OBJECTIVES This study aimed to examine the level of knowledge and practices of nurses responsible for the execution and management of cancer treatment in patients receiving biotherapy as related to the use of biological agents. METHODS This descriptive study was conducted with 40 nurses in oncology and hematology units of a university Medical Faculty hospital in which biological agents are frequently applied. RESULTS The majority of nurses (57.5%) were aged 23-27 years. It was determined that 35.5% of nurses obtained a patient history and 82.5% queried the allergic history of patients before biotherapy. According to the nurses' responses, 79.5% monitored the patients in terms of development of local complications, 85% informed the patients about complications, and 77.5% informed them about delayed infusion reactions. CONCLUSION Although the majority of nurses had not received a specific education about biotherapy, they were knowledgeable as related to the storage, preparation and administration of biological agents. © 2012 Association of Oncology