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Search Results: 1 - 10 of 32571 matches for " BCC Model "
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Evaluation of the Relative Efficiency of Government Hospitals in Yazd Using DEA Model (Data Envelopment Analysis)
M Alimohammadi Ardakani,SH Mirghafoori,SH Mirfakhradini,A Damaki
Journal of Shahid Sadoughi University of Medical Sciences , 2009,
Abstract: Introduction: Performance measurement, programming and goal setting for performance improvement are needed for organizations to improve their performance. Despite advancement in performance measurement systems, many organizations still emphasize on old models. Methods: This paper analyzes the efficiency of Yazd governmental hospitals by using DEA model from 2004 to 2006. The inputs in DEA model are 3 variables including number of physician, number of health personnel and number of beds. The outputs in DEA model are also 3 variables; number of in-patients, number of out-patients and number of bed days. Results: This paper results suggest that hospitals in Ardakan, Maybod, Khatam and Tabas Counties and only Afshar hospital in Yazd city are efficient. Inefficient hospitals include Savaneh Sookhtegi hospital of Yazd city and the hospital in Abarkooh County. Also, this paper determined the input and output targets of efficient and inefficient hospitals. For example, hospital in Taft County is efficient when number of inpatient increases to 54494, number of outpatients increases to 5225 and number of bed days increases to 21009 by output orientation model. Conclusion: Manager of hospitals can measure efficiency of hospital sections by using DEA models and plan for efficiency improvement, respectively.
Evaluating shops efficiency using data envelopment analysis: Categorical approach
Alemka ?egota
Zbornik Radova Ekonomskog Fakulteta u Rijeci : ?asopis za Ekonomsku Teoriju i Praksu , 2008,
Abstract: The article introduces Data Envelopment Analysis (DEA) and its applicability as mathematical programming technique. It evaluates the performance of homogeneous operating decision-making units. DEA has been proven as valuable performance evaluation method in situations when decision-making units under considerationhave multiple inputs and outputs and operate under similar conditions. For dealing with situations when units operate under different conditions, we have proposed categorical approach and analysed the influence of unit’s environment on relative efficiency results by applying categorical model on real data of 57 shops within one retailing organization. DEA identified good operating practices as members of efficient frontier (benchmark members) and those under efficient frontier that should be analysed as candidates for reorganization or even closure. Relative efficiency results obtained by non-controllable BCC model and categorical BCC model were significantly different so our conclusion is that business environmentgreatly influences the performance evaluation for several units and should be additionally investigated.
How Well does BCC_CSM1.1 Reproduce the 20th Century Climate Change over China?
XIN Xiao-Ge,WU Tong-Wen,LI Jiang-Long,WANG Zai-Zhi,LI Wei-Ping,WU Fang-Hua,
XIN Xiao-Ge
,WU Tong-Wen,LI Jiang-Long,WANG Zai-Zhi,LI Wei-Ping,WU Fang-Hua

大气和海洋科学快报 , 2013,
Abstract: The historical simulation of phase five of the Coupled Model Intercomparison Project(CMIP5) experiments performed by the Beijing Climate Center climate system model(BCC_CSM1.1) is evaluated regarding the time evolutions of the global and China mean surface air temperature(SAT) and surface climate change over China in recent decades.BCC_CSM1.1 has better capability at reproducing the time evolutions of the global and China mean SAT than BCC_CSM1.0.By the year 2005,the BCC_CSM1.1 model simulates a warming amplitude of approximately 1℃ in China over the 1961-1990 mean,which is consistent with observation.The distributions of the warming trend over China in the four seasons during 1958-2004 are basically reproduced by BCC_CSM1.1,with the warmest occurring in winter.Although the cooling signal of Southwest China in spring is partly reproduced by BCC_CSM1.1,the cooling trend over central eastern China in summer is omitted by the model.For the precipitation change,BCC_CSM1.1 has good performance in spring,with drought in Southeast China.After removing the linear trend,the interannual correlation map between the model and the observation shows that the model has better capability at reproducing the summer SAT over China and spring precipitation over Southeast China.
Treatment of Basal Cell Carcinoma by Topical 25% Podophyllin Solution  [PDF]
Khalifa E. Sharquie, Adil A. Noaimi, Mohammad S. Al-Zoubaidi
Journal of Cosmetics, Dermatological Sciences and Applications (JCDSA) , 2015, DOI: 10.4236/jcdsa.2015.53023
Abstract: Background: Basal cell carcinoma is the most common malignancies of the skin. Numerous modalities of treatment are available. Podophyllin is an antimitotic and caustic agent that has been used in treatment of genital warts. Objective: To test the effectiveness and safety of topical 25% podophyllin in treatment of basal cell carcinoma. Patients and Methods: Thirty eight patients with basal cell carcinoma enrolled in this open labeled interventional study that had been enrolled in Department of Dermatology-Baghdad Teaching Hospital, Baghdad, from January 2010 to October 2011. History and physical examination was performed to all patients regarding all demographics detail related to the disease. Exclusion criteria: were pregnancy, recurrent tumors, aggressive deep subtypes, morpheaic type, and size more than 2 cm2 in diameter. Biopsies for all patients were done for histopathological examination at the first visit, and after clinical cure of the lesions. Lesions were treated with 25% topical podophyllin solution once weekly for 6 weeks. Follow up after clinical cured was done every 3 months up to 18 months to recording any sign and symptom of recurrent. Results: Thirty five patients with basal cell carcinoma completed the study: 28 (80%) males and 7(20%) females with males to females ratio 4:1, their ages ranged from 30 - 87 (64.114 ± 12.68) years, and the duration of the disease ranged from 2 months to 30 years (6.88. ± 4.83) years. The size of lesions ranged from 0.8 - 1.9 (1.454 ± 0.239) cm. The total podophyllin applications number ranged from 2 - 6 (4.65 ± 1.055) sessions. The total numbers of treated lesions were 100 lesions: 64 (64%) nodular, 31(31%) pigmented, 3(3%) Basosquamous, and 2 (2%) superficial. Ninety six (96%) lesions in 32 patients showed complete cure with 2 - 6 sessions, while 4 lesions in 3 patients showed partial response with 6 sessions. Biopsy from 21 cured lesions in 21 patients showed complete clearness apart from one with residual malignant cells. All the patients did not show clinical recurrence, during the follow up period up to 18 months. Inflammatory
A solution to robot selection problems using data envelopment analysis
Suprakash Mondal,Shankar Chakraborty
International Journal of Industrial Engineering Computations , 2013, DOI: 10.5267/j.ijiec.2013.03.007
Abstract: Selection of industrial robots for the present day’s manufacturing organizations is one of the most difficult assignments due to the presence of a wide range of feasible alternatives. Robot manufacturers are providing advanced features in their products to sustain in the globally competitive environment. For this reason, selection the most suitable robot for a given industrial application now becomes a more complicated task. In this paper, four models of data envelopment analysis (DEA), i.e. Charnes, Cooper and Rhodes (CCR), Banker, Charnes and Cooper (BCC), additive, and cone-ratio models are applied to identify the feasible robots having the optimal performance measures, simultaneously satisfying the organizational objectives with respect to cost and process optimization. Furthermore, the weighted overall efficiency ranking method of multi-attribute decision-making theory is also employed for arriving at the best robot selection decision from the short-listed competent alternatives. In order to demonstrate the relevancy and distinctiveness of the adopted DEA-based approach, two real time industrial robot selection problems are solved.
Productivity Analysis of the Telecommunication Sector in India
Vineeta Saxena (Nigam),Dr. Tripta Thakur,Dr. R.P.Singh
International Journal of Engineering and Technology , 2009,
Abstract: This paper applies the data envelopment analysis (DEA) approach to measure the Productivity performance of India’s telecommunications sector. This study applies a data envelopment analysis (DEA) approach to measure the magnitude of performance differences between leading telecom operators in terms of their marketability and Profitability. It compares the financial valuations and relative productivity efficiencies of the leading global telecoms. Empirical results indicate that none of the telecoms with high valuations are highly efficient in terms of DEA, and that wireless operators are more efficient than full-service telecoms in terms of profitability and marketability. The results are expected to be utilized as benchmarking strategies for wireless and full-service telecommunications to be equipped with competitive advantages.
A Study of the Prediction of Regional and Global Temperature on Decadal Time Scale with BCC_CSM1.1 Model

GAO Feng,XIN Xiaoge,WU Tongwen,

大气科学 , 2012,
Abstract: 近期10~30年时间尺度的年代际预测是第五次耦合模式国际比较计划(CMIP5)重要内容之一.按照CMIP5试验要求,国家气候中心利用气候系统模式BCC_ CSM1.1完成并提交了年代际试验结果.本文评估了该模式年代际试验对10年尺度全球及区域地表温度的预测能力,并通过与20世纪历史气候模拟试验的对比分析,研究模式模拟对海洋初始观测状态的依赖程度.分析结果表明:(1)在有、无海洋初始化条件下,模式均能模拟出1960~2005年间全球10年平均实测地表温度的变暖趋势,但在有海洋初始化条件下,可以明显减小BCC_ CSM1.1模式模拟的全球升温趋势,使得年代际试验比历史试验的结果更接近观测值.这一特点在观测资料相对丰富的南北纬50°以内地区更为显著.(2)在年代际试验预测前期,通过Nudging方法,利用SODA再分析海洋温度资料对模式进行初始化,经过前期8~12月的协调后,模式预测的第1年南北纬50°范围海洋、陆面的平均地表气温接近于观测值(CRUTEM3,HadS ST2).由于模式初值SODA再分析SST资料与HadSST2观测值存在明显的全球大洋系统暖偏差以及模式本身系统偏差的影响,年代际试验模拟的地表气温在2~7年之内,从观测SST状态逐渐恢复到模式系统本身状态.在同组Decadal试验中,陆面和海洋恢复调整的时间长度几乎一致.(3)从10年平均气候异常在区域尺度上的预报技巧来看,有、无海洋初始同化对预测结果影响不大,高预测技巧区主要分布在南半球印度洋中高纬度、热带西太平洋以及热带大西洋区域.(4) SST变化与下垫面热通量密切相关,在热带和副热带海洋区域,长波辐射和感热通量是影响10年时间尺度SST变化较大的物理量,在中高纬度海洋,洋面温度变化主要受潜热通量的影响相对较大.
Malignancy after renal transplantation: a case series study from Isfahan University
Sh. Shahidi,Sh. Seirafian,B. Shayegan Nia,H. Adilipoor
Tehran University Medical Journal , 2006,
Abstract: Background: Long term use of immunosuppressive therapy in transplant recipients in order to prevent acute and chronic rejection increases the long term risk of cancer. This study evaluates the incidence of different organs’ cancer after renal transplantation and immunosuppressive therapy. Methods: This is a retrospective analysis of malignant tumors in renal graft recipients with more than one year graft survival. Patients were assessed according to their age, sex, diagnosis of cancer, immunosuppressive drugs, donors and period of dialysis before transplantation. Results: Evaluating all existing files in selected private clinics in Isfahan 350 patients were reviewed and 289 of them had entrance criteria. A total of 186 men and 103 women (mean age: 42.17±13.09 years) were included. They were followed up over a mean period of 52.46±33.24 months. A total of six cases (2.1%) of cancer were diagnosed in six recipients: All patients with cancer were male with a mean age of 51.17±14.7 years (range: 26-68 years). Tumor presented at a mean time of 51 months (rang: 15-82 months) after transplantation. There were two patients with BCC, two patients with SCC and two patients with lymphoma. Two patients died of progressive malignant disease. Age, period of dialysis before transplantation, and using immunosuppressive and anti-rejection drugs had no significant impact on development of post transplant malignancy. Conclusion: The frequency of tumors in these patients is lower than what reported by other centers, probably due to short period of follow up and low incidence of cancer in our general population. The risk of malignancy was 28 fold higher among transplant recipients than in general population. High risk of cancer in this group, confirms the necessity of routine examination for organ transplant recipients both before and after transplantation.
Soft tissue metastasis in basal cell carcinoma
Shrivastava Rajeev,Singh K,Shrivastava Minakshi
Indian Journal of Dermatology , 2007,
Abstract: Basal cell carcinoma (BCC) is the most common of the cutaneous malignancies, accounting for 65-75% of all skin cancers. The natural history of this disease is one of chronic local invasion. Metastatic BCC Is a rare clinical entity, with a reported incidence of only 0.0028-0.5%. Approximately 85% of all metastatic BCCs arise in the head and neck region. We present a case of BCC that spread to the muscles of the cheek and nodes (intraparotid and internal jugular), in a man who had a lesion near the inner canthus of his right eye and adjoining nasal bridge.
Evolution of Internal Crack in BCC Fe under Compressive Loading  [PDF]
Dongbin Wei, Zhengyi Jiang, Jingtao Han
Journal of Modern Physics (JMP) , 2012, DOI: 10.4236/jmp.2012.310197
Abstract: A molecular dynamics model has been developed to investigate the evolution of the internal crack of nano scale during heating or compressive loading in BCC Fe. The initial configuration does not contain any pre-existing dislocations. In the case of heating, temperature shows a significant effect on crack evolution and the critical temperature at which the crack healing becomes possible is 673 K. In the case of compressive loading, the crack can be healed at 40 K at a loading rate 0.025 × 1018 Pa·m1/2/s in 6 × 10-12 s. The diffusion of Fe atoms into the crack area results in the healing process. However, dislocations and voids appear during healing and their positions change continuously.
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