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An Integrated Location-Routing-Inventory Problem by Considering Supply Disruption  [PDF]
Seyed Mohammad Seyedhosseini, Ali Bozorgi-Amiri, Sahar Daraei
iBusiness (IB) , 2014, DOI: 10.4236/ib.2014.62004
Abstract:


In this paper, we present a model of integrated Location Routing and Inventory problem (ILRIP) with considering random disruption at distribution centers (DCs). The proposed model simultaneously determines the number and the location of DCs that should be opened, the assignment of customers to DCs, the allocation of customers to active routes and the arrangement of customer sineach route, reorder point and economic order quantity for each distribution center, and finally, safety stock level should be kept per distribution center. In this study, we consider a stochastic-demand inventory system where the product’s supply is randomly disrupted in DCs. Distribution centers adopt a (r, Q) inventory control policy. We assume that the distribution centers can be faced with a shortage, in terms of disruption. Partial backordering is applied when a stock out occurs. The model is formulated as a mixed-integer nonlinear programming, which minimizes the expected total cost of the network. We solve the developed mathematical model by meta-heuristic algorithm. Present computational results for several randomly generated instances also for a case study according to literature to show validation of the proposed model.


Optimization of Supply Chain Planning with Considering Defective Rates of Products in Each Echelon  [PDF]
Behin Elahi, Yaser Pakzad-Jafarabadi, Leila Etaati, Seyed-Mohammad Seyedhosseini
Technology and Investment (TI) , 2011, DOI: 10.4236/ti.2011.23022
Abstract: Supply Chain Planning has recently received considerable attention in both academia and industry. The major targets of supply chain planning are to reduce production costs, risks, delays and maximize or improve profit, quality of product, customer service which result in increased competitiveness, more customer satisfaction and portability. In this study, a new bi-objective mathematical modeling for a four-echelon supply chain, consisting multi-supplier, assembler, distribution center and retailer, with considering the defective rates of products is proposed. Then, fuzzy compromise programming method is applied to solve the non-linear mixed-integer bi-objective model. Finally, a numerical example is given to illustrate application of the proposed algorithm and the efficacy and efficiency of that are verified through this section. It has been shown that such an approach can significantly help the managers to decide properly toward economic supply chain planning.
Utilizing TOPSIS intensified with adjustment similarity factor to determine price of technology
Arnoosh Shakeri,Mohammad Ali Shafia,Seyed Mohammad Seyedhosseini
Management Science Letters , 2012,
Abstract: Technology transfer has been a very frequent activity in the industrial world nowadays. Technology valuation, and in particular technology pricing, has played a considerable role in these transactions, in spite of a huge amount of limitations in the pricing methodologies applied. Making a sound, traceable and reliable means for applying the price evaluation procedure, seems as a technological requirement to be traced for. The objective of delivering this paper is to introduce a new numerical technology pricing method to provide the two transacting parties a unique compromised price. A three-dimensional model for technology pricing is proposed and The TOPSPS algorithm has been utilized to select the most similar technologies to the intended one and the constructed scoring system is applied to calculate the final technology price accordingly.
Make or buy strategy decision making in supply quality chain
Seyed Mohammad Seyedhosseini,Faezeh Mohammadipour,Milad Gorji Ashtiani
International Journal of Industrial Engineering Computations , 2012,
Abstract: Minimizing the total cost is absolutely the goal of each supply chain, which is most of the time pursued. In this regards, quality related costs that have significant roles are sometimes neglected. Selecting suppliers, which supply relatively high quality raw materials in a lower cost is considered as a strategic decision. Make or Buy decision can be also noticed in supplier selection process. In this paper, the supply strategy: Make or Buy decision (SS: MOB) is studied in order to find which strategy (Make or Buy) should be chosen to minimize the total costs of supply chain. Therefore, two separate models are generated for each strategy and several examples are solved for the respective models. Computational experiments show the efficiency of the proposed models for making decision about selecting the best strategy.
Perception of God and Paranoia among Iranian University Students  [PDF]
Shideh Fasahati, Seyed Mohammad Kalantarkousheh
Psychology (PSYCH) , 2014, DOI: 10.4236/psych.2014.58109
Abstract:

This study examined the correlation between types of perception of God and paranoid thoughts among 312 randomly sampled students—175 female and 137 male—in the Azad Islamic University of Tehran in Iran. Two survey questionnaires were administered to the participants through the University’s website—one assessing their perception of God (Lawrence, 1997), and the other to assess the occurrence of paranoid thoughts among them (Derogatis, Lipman, & Covi, 1973). Data were analyzed using correlation coefficients and regression methods. The results show that only the negative perception of God correlates with paranoia in both males and females, while the perception of God’s blessings in one’s life correlates with paranoid thoughts only among male students. Students with a positive perception of God experience less paranoia than students with negative perception of God—a finding that may actually suggest that positive spirituality/religiosity holds positive and therapeutic benefits for the paranoid.

Facies Analysis, Sedimentary Environment and Sequence Stratigraphy of the Carboniferous Deposits of Gachal Formation, Eastern Central Iran (Rahdar Section)  [PDF]
Mohammad Javad Javdan, Mohammad Nabi Gorgij, Javad Shahraki, Seyed Mahmood Pahlavan Hashemi, Seyed Mohsen Kalvandi, Seyed Mohammad Kalvandi, Eshagh Bandani
Open Journal of Geology (OJG) , 2015, DOI: 10.4236/ojg.2015.59055
Abstract: Early carboniferous deposits of the Kalmard block, with various characteristics in different outcrops, are recognized by Gachal Formation. Generally speaking, this formation comprises of four different members (A, B, C and D), consisting of carbonate and evaporative rocks. Gachal Formation is composed chiefly of 55 meters sandstone and limestone interbedded with shale. According to the lithological and microscopic studies, Gachal Formation is deposited in beach, semi-restricted and open lagoon, shoal and open marine environments. Vertical changes of microfacies and the curve of its depth changes account for the high thickness of the facies of shoal and bar sub-environments and the low thickness of the facies of lagoon and open marine sub-environment as well. Gachal Formation rocks in Rahdar section are deposited in a low-anglehomoclinal ramplocated in southern Paleothysis Ocean. The carbonate-sandstone sequence inGachal Formation in Rahdar section is composed of a depositional sequence separated from each other by type 1 sequence boundaries. Deposits of this formation are separated from lower deposits by type 2 sequence boundary and fromKhan Group by unconformity. The sedimentary sequence identified in this formation points to the age of late Visean, conforming to Kaskaskia IV. The erosional boundary between Gachal and Khan Formations is relatively compatible with drop in sea level at Late Kaskaskia global scale.
Effect of Timing of Circumcision on Sexual Satisfaction and Function  [PDF]
Seyed Reza Hosseini, Mohammad Ghasem Mohseni
Open Journal of Urology (OJU) , 2011, DOI: 10.4236/oju.2011.11003
Abstract: Objectives: Male circumcision is a commonly-performed surgical procedure in the world. Currently, no consensus exists about the role of the foreskin or the effect circumcision on sexual satisfaction. All previous studies have evaluated the effect of adult circumcision on sexual function. In this study, we responded to “Does circumcision timing have different effects on sexual function?” Methods: Based on circumcision timing (receiving circumcision in less than 18 year olds or older than 18 year olds), the participants were divided into two groups. The following data and measurements were investigated: IIEF-5 score, sexual satisfaction, sexual activity [number of sexual attempt/week] and ability to achieve or maintain an erection. Results: Two hundred and fifty cases including 125 men were investigated in each group. The baseline demographic (age, marital status, education, smoking) was similar in the 2 groups. No statistically significant differences were seen regarding their sexual satisfaction (P = 0.65), sexual activity [number of sexual attempt/week] (P = 0.74), ability to achieve or maintain an erection (P = 0.44), (P = 0.9). The total mean IIEF-5 score was 24.21 +/- 1.94 and 22.23 +/- 1.12 in groups 1 and 2, respectively (p = 0.5). Conclusion: We concluded that the age at which the circumcision is preformed has no effect on the degree of sexual function and satisfaction.
MAC Sub-Layer Analysis with Channel Estimation in Broadband Power Line Communication  [PDF]
Mohammad Khaled Andari, Seyed Ali Asghar Beheshti
Communications and Network (CN) , 2011, DOI: 10.4236/cn.2011.33017
Abstract: Broadband power line communication (BPLC) gained a lot of interest because of low cost and high performance communication network in access area. In this paper physical (PHY) layer and medium access control (MAC) sub-layer of BPLC are considered. Furthermore, effects of bit error rate (BER) are analyzed in MAC sub-layer. Powerful turbo convolutional code (TCC) and wideband orthogonal frequency division multiplexing (OFDM) are used in PHY layer. Carrier sense multiple access (CSMA) and virtual slot multiple access (VSMA) are taken into consideration in MAC sub-layer. Multilayered perceptrons neural network with backpropagation (BP) learning channel estimator algorithm compare to classic algorithm in for channel estimating. The simulation results show that the proposed neural network estimation decreases bit error rate then in MAC sub-layer throughput increases and access delay is decreased.
Osteoid Osteoma of Proximal Phalanx of the Index Finger of the Right Hand  [PDF]
Seyed Abdolhossein Mehdi Nasab, Mohammad Pipelzadeh
Open Journal of Medical Imaging (OJMI) , 2011, DOI: 10.4236/ojmi.2011.12008
Abstract: Osteoid osteoma is a benign bone forming tumor of the growing skeleton that is most often seen in young men. It represents by pain and radiologic appearance of anidus surrounded by osteosclerosisthat occurs mostly in long bones of the lower extremity. Occurrence of this tumor in the hand is an uncommon condition. We present a 23-year-old man with an osteoid osteoma in the proximal phalanx of the right index finger. The radiological examination showed a lytic lesion with irregular border with a central sclerotic nidus and also sclerotic changes around the lytic lesion and bone expansion in the proximal phalanx of the right index finger. He was suffering from a history of pain and swelling of his finger since 8 months. The pain disappeared after surgical excision of nidus. The patient was pain-free and there was no evidence of recurrence at 15 months follow up.
Nutlet Micromorphological Study on Salvia L. (Lamiaceae) from NE Iran  [PDF]
Seyed Mohammad Mousavi, Azarnoosh Jafari, Shahla Najafi
American Journal of Plant Sciences (AJPS) , 2013, DOI: 10.4236/ajps.2013.47178
Abstract:

In the present research, micromorphological features of 10 Salvia L. nutlets (mericarp) growing in NE Iran were studied by SEM. These species were divided into three and four groups based on the shape and ornamentation of nutlets respectively. The variation in color, size and ornamentation of mericarp helped to identify species.

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