A characteristic of Data Envelopment Analysis (DEA) is to allow individual decision making units (DMUs) to select the factor weights which are the most advantageous for them in calculating their efficiency scores. This flexibility in selecting the weights, on the other hand, deters the comparison among DMUs on a common base. For dealing with this difficulty and assessing all the DMUs on the same scale, this paper proposes using a multiple objective linear programming (MOLP) approach based on scalarizing FUNCTION for generating common set of weights under the DEA framework. This is an advantageous of the proposed approach against general approaches in the literature which are based on multiple objective nonlinear programming.

Background: Based on the studies which have been done till now, resynchronization of ventricular contraction results in clinical improvement in patients who suffer from moderate to severe heart failure with intraventricular conduction disturbance. and using this method is increasing in our country. Study in this filed seems to be necessary.Material and methods: Sixty-five consecutive patients with advanced heart failure, NYHA Class III and IV, LV ejection fraction (EF)£35%, QRS³120 were studied before and 3 months after CRT. Mean age was 60, 57 and 8 patients with NYHA class III and IV respectively. All patients received furosemide, spironolactone, carvedilol, ACE inhibitors and angiotensin II –receptors blockers at the optimal tolerated dosage. Mean LVEF was 20.83%. Echocardiographic (Tissue Doppler Imaging), ECG and FUNCTION class (NYHA) were assessed at baseline before implantation and 3 months after.Result: LV ejection fraction increased +6.8% (21.10±7 vs. 27.93±8.4%, P<0.001). Mitral valve regurgitation severity reduced (P<0.013). Interventricular mechanical delay reduced (53.83ms±18.45 vs. 26.53ms±13.90 P=0.000) and also Intra ventricular mechanical delay reduced (62.53ms±25.08 vs. 45.55ms±13.47, P=0.000). Dilated cardiomyopathic group has more mean changes in LVEF than Ischemic group (+9.06%±7.3 vs. +4.08%±6.5, P=0.01).Conclusion: Biventricular pacing results in significant clinical improvement in patients who have moderate to severe heart failure.

Objective(s): To validate Persian version of the FSFI and to determine its diagnostic cut off score. Methods: This was a descriptive analytic study. To fill in the Persian version of the FSFI. In addition clinical interviews were carried out by a psychiatrist on DSM-4 criteria. Women divided in two age and educational matched groups: the control group (n=28) who have not sexual dysFUNCTION and the case group (n=53) who have sexual dysFUNCTION. Data were analyzed by Cronbach’s alpha and validity was assessed by comparing mean scores of two groups. Optimal cut off score determined by Receiver Operating Characteristic (ROC) curve. Results: The findings showed satisfactory results for full scale and each subscale with Cronbach’s alpha ranging from 0.66 or above for sexually dysFUNCTIONal sample and 0.70 or above for sexually active sample. Discriminant validity confirmed the ability of both total and domain scores to differentiate between active and inactive women. On the basis of sensitivity and specificity analyses we found that the optimal cut off score was found to be 28 for differentiating women with and without sexual dysFUNCTION. Conclusion: The findings showed that the Iranian version of Female Sexual FUNCTION Index (FSFI) is a reliable and valid instrument for measuring sexual FUNCTION in women.

Background: The most frequently used test for evaluation of fetal health is the Non STRESS Test (NST). Unfortunately it has a high incidence of false positive results. The combination of vibroacoustic stimulation with the NTS has been shown to reduce non reactive results.Methods: A tests assessment method was chosen with a simple randomized sampling. 40 pregnant women with non reactive NST in the first 20 minutes who received VAS in one of Tehran University's Hospitals were compared with BPP scores. A vibroacoustic stimulation was applied for a 3 seconds on the maternal abdomen and fallowed within 10 minutes. Data collection tools were NST, sonography instruments, NST result paper, tooth brusher, watch, demographic questioner and check list. Data analysis was made by descriptive static and by using the Fisher's Exact Test (with level of significant at p<0/05). All statistical analysis were performed using an spss/win.Results: After VAS, 70% of non reactive tracing became reactive. All cases with fetal reactivity response after a VAS had a subsequent BPP score of 8 (negative predictive value of 100%). False positivity of VAS was lower than NST.Conclusion: VAS offers benefits, by decreasing the incidence of non reactive test and reducing test time. VAS lowers the rate of false positive NST. VAS is safe and allows more efficient of prenatal services. This test could be used as a rapid antepartum test to predict fetal well-being.

Purpose: Application of heavy forces to maxillary dentition during treatment with headgear, induces high concentration of STRESSes in periodontal tissue. Quantification of this STRESS is of great concern in orthodontics. This study was designed to investigate the quantity and quality of STRESS response in the PDL of maxillary first molar which was subjected to high pull headgear traction using Finite Element method.Methods and Material: In an experimental study, a three-dimensional finite element model of maxillary dentition, consisting of 17096 elements and 23013 nodes, was developed based on a young human skull. The forces were applied to the maxillary first molar in the stabilized Arch by means of a rectangular full size arch wire in (022) slot bracket. Mechanical properties of this model were based on previous studies. A 350 gram force was used for high pull headgear to affect the dentition (+30 degree) and STRESS distribution was investigated in buccal, palatal, mesial and distal side and in cervical, middle, apical sections of the PDL. The quantity of STRESSes were expressed as principal STRESSes (1,2,3), while the negative and positive signs indicated compressive and tensile STRESSes.Results: The buccal surface of PDL of mesiobuccal root and the buccal, palatal and distal surface in cervical region of PDL of distobuccal root and the distal surface of the PDL of palatal root had received a great deal of STRESSes, in addition, the over all STRESS distribution in roots of molar had intrusive nature.Conclusion: The extension of high STRESS concentration areas observed after using high pull headgear is limited to some root surfaces specially the distobuccal root.