On edge-group choosability of graphs

In this paper, we study the concept of edge-group choosability of graphs. We say that G is edge k-group choosable if its line graph is k-group choosable. An edge-group choosability version of Vizing conjecture is given. The evidence of our claim are graphs with maximum degree less than 4, planar graphs with maximum degree at least 11, planar graphs without small cycles, outerplanar graphs and near-outerplanar graphs

Large stars with few colors

A recent question in generalized Ramsey theory is that for fixed positive integers $s\leq t$, at least how many vertices can be covered by the vertices of no more than $s$ monochromatic members of the family $\cal F$ in every edge coloring of $K_n$ with $t$ colors. This is related to an old problem of Chung and Liu: for graph $G$ and integers $1\leq s<t$ what is the smallest positive integer $n=R_{s,t}(G)$ such that every coloring of the edges of $K_n$ with $t$ colors contains a copy of $G$ with at most $s$ colors. We answer this question when $G$ is a star and $s$ is either $t-1$ or $t-2$ generalizing the well-known result of Burr and Roberts

Failure of composite plates under static biaxial planar loading

The project involved detailed investigations into the failure mechanisms in composite plates as a function of hole size (holes centrally located in the plates) under static loading. There were two phases to the project, the first dealing with uniaxial loads along the fiber direction, and the second dealing with coplanar biaxial loading. Results for the uniaxial tests have been reported and published previously, thus this report will place emphasis on the second phase of the project, namely the biaxial tests. The composite plates used in the biaxial loading experiments, as well as the uniaxial, were composed of a single ply unidirectional graphite/epoxy prepreg sandwiched between two layers of transparent thermoplastic. This setup enabled us to examine the failure initiation and propagation modes nondestructively, during the test. Currently, similar tests and analysis of results are in progress for graphite/epoxy cruciform shaped flat laminates. The results obtained from these tests will be available at a later time

The impact of waste management promotion program in Razi Hospital in Qazvin, Iran (2013-2018)

زمینه و اهداف : پسماند مراقبت‌های بهداشتی (15 تا 25 درصد پسماند خطرناک) دومین پسماند خطرناک در جهان است. بیمارستان‌ها و مراکز درمانی مهم ترین مراکز تولید پسماندهای بیمارستانی هستند. هدف از این مطالعه بررسی تاثیر برنامه ارتقاء مدیریت پسماند بیمارستان رازی قزوین درسال‌های1392 تا 1397 (6 سال) است. مواد و روش‌ها : این پژوهش از نوع مداخله‌ای طی 6 سال (1397- 1392)، پسماندهای بیمارستان در چهار دسته اصلی از نظر کمی آنالیز و داده‌های مربوطه گردآوری گردید. برای تحلیل داده‌ها از آمار توصیفی درصد و میانگین نرم افزار Excel استفاده شد. ملاحظات اخلاقی در تمام مراحل اجرای مطالعه رعایت شد. یافته‌ها : نتایج نشان داد در سال1392 (سال پایه) میزان پسماندهای خطرناک7/46 درصد و پسماندهای عادی 3/53 درصد بود. با اجرای برنامه ارتقاء مدیریت پسماند در سال 1393 و 1394 میزان پسماندهای خطرناک 35 درصد و پسماندهای عادی 65 درصد، در سال 1395میزان پسماندهای خطرناک 7/32 درصد و پسماندهای عادی 3/67 درصد، درسال 1396میزان پسماندهای خطرناک 4/33 درصد و پسماندهای عادی 6/66 درصد و درسال 1397میزان پسماندهای خطرناک 3/30 درصد و پسماندهای عادی 7/69 درصد شد. نتیجه‌گیری : با توجه به یافته‌های پژوهش حاضر و مقایسه آن با مطالعات ذکر شده، برنامه‌های ارتقاء مدیریت پسماند در بیمارستان رازی موثر بوده است. اگرچه با استاندارد WHO در زمینه میزان تولید پسماند خطرناک همچنان فاصله داشته و نیازمند تداوم برنامه‌ها و بهبود مستمر آن ها وجود دارد.Background: Health care centers wastes (15-25% hazardous waste) are the second most dangerous waste in the world.Hospitals and medical centers are the major sources of health-care waste generation. The aim of this study was to investigate the effect of waste management promotion program of Razi hospital in Qazvin, Iran during 2013-2018 (6 years). Materials and methods: This interventional study was conducted during 6 years (2013-2018), in which hospital wastes were collected in four main categories quantitatively and the relevant data were collected. Descriptive statistics of percentage and mean were conducted for data analysis using Excel software. Ethical considerations were observed at all stages of the study. Results: The results showed that the rate of general and hazardous waste generation were 53.3% and 46.7%, respectively. With the implementation of waste management promotion program in 2014 and 2015, hazardous and ordinary wastes percentage reached to 35% and 65%. Similarly, the contribution of hazardous wastes fell down to 32.7% versus to 67.3% of general waste in 2016. Likewise, hazardous wastes were 33.4% and normal wastes were 66.6% in 2017; and in the following year (2018), the contribution of hazardous and general wastes were 30.3% and 69.7%, respectively. Conclusion: &nbsp;Based on the findings of the present study and comparing them with the mentioned studies, waste management promotion programs in Razi Hospital have been effective. However, it remains far from WHO standards in the field of hazardous waste generation and necessitates continuation of programs and continuous improvement of them

THE EVALUATION OF SUCCESS IN ESTABLISHEMNT OF KNOWLEDGE MANAGEMENT AND PRIORITIZATION OF ITS DIMENSIONS BY HP IN OIL AND ENERGY INSUTRY OF IRAN

ABSTRACT By power of knowledge, the organizations can preserve their long-term priorities in various competitive areas. Despite other managements, knowledge management is not transient but it has long-lasting effects. The competitive space and condition of organizations are more complex than before and rapidly changing such that the speed of change in most organizations is much bigger than the power of responding and conforming. Continuous change of knowledge has created new imbalance status for organizations. In this regard, just those organizations can survive who can preserve their competitive advantage. According to the scholars and thinkers, this maintenance of competitive advantage and organization survival is possible through knowledge management such that it is possible to continuously create new knowledge in organization. This paper measures evaluation of knowledge success in Qeshm Oil and Energy Development Company, which is one of companies working in oil and energy industry. It also specifies the dimensions of success evaluation, status of company and determines the gap in each dimension. The research methodology is descriptive-evaluative for which a questionnaire with 35 questions and 8 dimensions has been designed based on the model of building blocks of knowledge management. At the end, some solutions have been offered for improvement of the status of company

Bezpieczeństwo i skuteczność dwufazowej insuliny aspart 30 (BIAsp30) u Irańczyków chorych na cukrzycę typu 2: otwarte, nierandomizowane, wieloośrodkowe badanie - irańska podgrupa badania IMPROVE&#8482;

Introduction: To evaluate the clinical profile of BIAsp 30 (30% soluble insulin aspart, 70% protamine-crystallized insulin aspart) (NovoMix®30) in type 2 diabetes patients in routine clinical practice in Iran. Material and methods: IMPROVE&#8482; was a 26-week, multinational, open-label, non-randomized study in patients with type 2 diabetes. The safety and efficacy of BIAsp 30 were assessed at baseline and at 13 and 26 weeks. The titration of BIAsp30 was at the physician&#8217;s discretion. Results: In Iran, 478 patients (47% male) previously treated with oral antidiabetic drugs (OADs) (N = 159, 33.3%) and/or insulin other than BIAsp30 (N = 317, 66.3%) or a few who were treatment-na&#239;ve (N = 2, 0.4%) participated in the study. After 26 weeks of treatment with BIAsp 30, the rate of reported major hypoglycaemic episodes was reduced by 88.1% from baseline (baseline v. Week 26: 0.303 v. 0.037 episodes/pt-year; p < 0.001). No significant differences in minor hypoglycaemic episodes between baseline and Week 26 were found. Glycaemic control was significantly improved from baseline to Week 26 with a mean HbA1c reduction of 1.2 &#177; 1.9%. Patients&#8217; quality of life as measured by the DiabMedSat questionnaire significantly improved from baseline (58.1) to the end of the study (75.4, p < 0.001). Conclusions: BIAsp 30 therapy appeared safe and effective and improved quality of life in Iranian patients with type 2 diabetes after 26 weeks of treatment. (Pol J Endocrinol 2010; 61 (4): 364-370)Wstęp: Celem badania była ocena profilu działania insuliny BIAsp 30 (30% rozpuszczalnej insuliny aspart, 70% insuliny krystalizowanej z protaminą) (NovoMix®30) u chorych na cukrzycę typu 2 w warunkach standardowej opieki zdrowotnej w Iranie. Materiał i metody: IMPROVE&#8482; było 26-tygodniowym, wieloośrodkowym, międzynarodowym, otwartym i nierandomizowanym badaniem z udziałem chorych na cukrzycę typu 2. Bezpieczeństwo i skuteczność insulin BIAsp 30 oceniano na początku badania oraz po 13 i 26 tygodniach. Dawkowanie insuliny BIAsp30 było zależne od zaleceń lekarskich. Wyniki: W irańskiej części badania uczestniczyło 478 chorych (47% stanowili mężczyźni) leczonych dotychczas doustnymi lekami hipoglikemizującymi (N = 159, 33,3%) i/lub insuliną inną niż BIAsp30 (N = 317, 66,3%) oraz nieliczna grupa pacjentów niestosujących wcześniej farmakoterapii (N = 2, 0,4%). Po 26 tygodniach leczenia insuliną BIAsp 30, częstość epizodów ciężkiej hipoglikemii zmniejszyła się o 88,1% (wartości wyjściowe v. tydzień 26: 0,303 v. 0,037 epizodów/pacjenta-rok; p < 0,001). Dane dotyczące częstości epizodów lekkiej hipoglikemii na początku badania i po 26 tygodniach leczenia nie różniły się istotnie. Odnotowano natomiast poprawę kontroli glikemii; po 26 tygodniach odsetek HbA1c obniżył się średnio o 1,2 &#177; 1,9% w stosunku do wartości wyjściowej. W okresie od rozpoczęcia do zakończenia badania nastąpiła istotna poprawa jakości życia chorych, oceniana przy użyciu kwestionariusza DiabMedSat; punktacja wynosiła odpowiednio 58,1 i 75,4 (p < 0,001). Wnioski: Terapia insuliną BIAsp 30 stosowana przez 26 tygodni u Irańczyków chorych na cukrzycę typu 2 okazała się bezpieczna i skuteczna, a ponadto spowodowała poprawę jakości życia pacjentów. (Endokrynol Pol 2010; 61 (4): 364-370

Nationwide Prevalence of Diabetes and Prediabetes and Associated Risk Factors Among Iranian Adults: Analysis of Data from PERSIAN Cohort Study

Introduction Over the past decades prevalence of diabetes has increased in Iran and other countries. This study aimed to update the prevalence of diabetes and prediabetes in Iran and to determine associated sociodemographic risk factors, as well as diabetes awareness and control. Methods This is a nationally representative cross-sectional survey that included 163,770 Iranian adults aged 35-70 years, from different ethnic backgrounds, between 2014 and 2020. Diabetes was diagnosed at fasting blood sugar of >= 6.99 mmol/L (126 mg/dL), or receiving blood glucose-lowering treatment. Multivariable logistic regression was applied to detect determinants associated with prevalence of diabetes and prediabetes, as well as predictors of diabetes awareness and glycemic control. Results Sex- and age-standardized prevalence of diabetes and prediabetes was 15.0% (95% CI 12.6-17.3) and 25.4% (18.6-32.1), respectively. Among patients with diabetes, 79.6% (76.2-82.9) were aware of their diabetes. Glycemic control was achieved in 41.2% (37.5-44.8) of patients who received treatment. Older age, obesity, high waist to hip ratio (WHR), and specific ethnic background were associated with a significant risk of diabetes and prediabetes. Higher awareness of diabetes was observed in older patients, married individuals, those with high WHR, and individuals with high wealth score. Moreover, glycemic control was significantly better in women, obese individuals, those with high physical activity, educational attainment, and specific ethnic background. Conclusions The prevalence of diabetes and prediabetes is increasing at an alarming rate in Iranian adults. High proportion of uncontrolled patients require particular initiatives to be integrated in the health care system

On Generalized Schur Numbers of the Equation x+ay=z

Let a and r be positive integers. By definition, sar is the least positive integer such that, for any r-coloring of the interval 1,sar, there exists a monochromatic solution to x+ay=z. For a=1, the numbers sr=s1r are classical Schur numbers. In this paper, we study the numbers sar for a≥2