44 research outputs found
A Novel Interactive Fuzzy Programming Approach for Optimization of Allied Closed-Loop Supply Chains
No full textIn recent years, the relationship between companies and suppliers has changed with the continuous rise in environmental awareness and customer expectations. In order to fulfill customers' needs, the actors in a Supply Chain (SC) network sometimes compete and sometimes cooperate with each other. In SC management, both competitive and collaborative strategies have become important and have required different points of view. In a collaborative environment, companies should strive for common targets with mutual relationship. After managers decided to share their resources, some positive effects have appeared on the companies and suppliers' performance such as profitability, flexibility and efficiency. Consequently, many companies are willing to cooperate with each other in a SC network because of these reasons. On the other hand, Closed-Loop Supply Chain (CLSC) management has been attracting a growing interest because of increased environmental issues, government regulations and customer pressures. Based on this initiative, our paper presents a novel allied CLSC network design model with two different SCs including common suppliers and common collection centers. First, a decentralized multi-level Mixed-Integer Linear Programming (MILP) model that consists of two different levels of Decision Makers (DMs) is developed. The plants of common SCs comprise the upper-level DMs, common suppliers, common collection centers, and the logistics firm comprises the lower-level DMs. A novel Interactive Fuzzy Programming (IFP) approach using Fuzzy Analytic Hierarchy Process (AHP) is proposed to obtain a preferred compromise solution for the developed model. Through use of Fuzzy AHP in the proposed IFP approach, the DMs can identify the importance of the lower-level DMs. In order to validate the developed model and the proposed IFP approach, a numerical example is implemented. According to the obtained results, our proposed IFP method outperforms Sakawa and Nishizaki's(1) and Calik et al.' s(2) approach with respect to the satisfaction degrees of upper-level DMs for the developed CLSC model.Scientific and Technological Research Council of Turkey (TUBITAK) (International Postdoctoral Research Fellowship Program)In carrying out this study, the third author, Turan Paksoy, is granted by the Scientific and Technological Research Council of Turkey (TUBITAK) (International Postdoctoral Research Fellowship Program)
Studies of a multi gravity separator (MGS) to produce clean coal from Turkish lignite and hard coal fine tailings
No full text27th Annual International Pittsburgh Coal Conference 2010, PCC 2010 -- -- --The multi-gravity separator (MGS) is a novel piece of equipment for the separation of fine and ultra-fine minerals. This study was conducted to evaluate the effects of different process variables on the performance of the Multi Gravity Separator (MGS) for beneficiation of Turkish lignite and hard coal fine tailings to recover ultra-fine coal. The main minerals of Tunçbilek lignite tailings are kaolinite, illite and mica. The dominant minerals of Zonguldak hard coal tailings are chlorite, quartz, mica, calcite, pyrite, and amorphous materials. Various operating and design conditions of MGS such as drum speed, tilt angle, shaking amplitude, wash water rate, feed rate and pulp solid ratio were investigated. A hydrocyclone was used for pre-enrichment with the MGS. Operation parameters of the hydrocyclone, namely feed solids, inlet pressure, vortex finder and apex diameters were investigated. The results showed that clean coal was obtainable with 22.83% ash, 5.696 kCal/kg calorific value and recovery of 49.32% from lignite has 66.21% ash and 1.835 kCal/kg calorific value, with 6.98% ash, 7.214 kCal/kg calorific value and recovery of 85.61% from a hard coal has 28.41% ash and 5863 kCal/kg calorific value by this two-stage concentration process.ADULARYA; Aksa Energy; B and S Invest Co; Calik Enerji; Celikler Holdin
A study to recover coal from Turkish lignite fine coal tailings: Comparison of falcon concentrator and Multi Gravity Separator (MGS)
No full text27th Annual International Pittsburgh Coal Conference 2010, PCC 2010 -- -- --Lignite coal is the primary domestic source of energy in Turkey, for this reason effective exploitation of the reserves of Turkey is very crucial. In Turkey the fine tailings of lignite coal processing plants are sent in most cases to the tailing ponds without any treatment. However, recovery of fine coals from coal preparation tailings and recycle of processing water are of both economic and environmental incentives, not only preserving natural resources but also reducing environmental consequences of discharging large volume of tailings. Recent developments in the use of various gravity equipments in fine-coal beneficiation have been discussed and their relative merits have been compared. In this study, the possibility of beneficiation of lignite tailings included quartz, kaolinite, siderite, mica/illite, dolomite, feldspar compounds in the Tunçbilek/Kütahya region was investigated by Multi Gravity Separator (MGS) and Falcon Concentrator and these two methods compared. The entire exercise revealed that the MGS could produce a clean coal with an ash content of 22.83%, 5696 kCal/kg calorific value and a recovery of 49.32% and that the Falcon could produce a clean coal with an ash content of 40.26%, 4224 kCal/kg calorific value and a recovery of 64.53% from a feed coal having an ash content of 66.21% and 1835 kCal/kg calorific value.ADULARYA; Aksa Energy; B and S Invest Co; Calik Enerji; Celikler Holdin
Glomuvenous Malformations in the Buccal Area
No full textGlomuvenous malformations (GVMs) are relatively rare lesions in the head and neck area. A 30-year-old woman presented to our clinic with a large mass on the right buccal area with tenderness and hypersensitivity to palpation. The lesion was excised totally under general anesthesia. Microscopic evaluation and immunostaining method confirmed the diagnosis of GVM. We concluded that a solitary form of GVMs as a large mass on the buccal region could occur, and a mass with tenderness and hypersensitivity on palpation could be significant in its differential diagnosis
The comparison of nuclear morphometric analysis with classical prognostic factors in colorectal carcinomas
No full textCystic isolated lymphoma of the base of the tongue: A case report.
No full textIsolated lymphoma of the base of the tongue is a relatively rare condition. The clinical presentation may vary from a submucosal mass with a cystic appearance to an ulcerated lesion. In the present case, a cystic mass was identified in a patient admitted with a sore throat. Pathological examination confirmed diffuse large B-cell lymphoma. The clinical and pathological picture of lymphomas covers a wide spectrum and the rate of occurrence in the oral cavity is 3-5%. Among all malignant tumors of the oral cavity, lymphomas represent the third most common type of tumor, following squamous cell carcinoma and salivary gland neoplasms. Lymphomas of the oral cavity mostly arise from the Waldeyer ring, which is a lymphoid tissue. In our case, no recurrence was observed during the 8-month follow-up period after the patient was administered chemotherapy followed by radiotherapy. In conclusion, although isolated lymphoma of the base of the tongue is extremely rare, it should always be considered in patients presenting with a sore throat and the sensation of a foreign body in the throat
Cifar-10 Image Classification with Convolutional Neural Networks for Embedded Systems
No full text15th IEEE/ACS International Conference on Computer Systems and Applications (2018 : Aqaba; Jordan)Convolutional Neural Networks (CNN) have been successfully applied to image classification problems.Although powerful, they require a large amount of memory. The purpose of this paper is to perform image classification using CNNs on the embedded systems, where only a limited amount of memory is available. Our experimental analysis shows that 85.9% image classification accuracy is obtained by our framework while requiring 2GB memory only, making our framework ideal to be used in embedded systems
Amelioration of radiation-induced lung injury by halofuginone: An experimental study in Wistar-Albino rats
No full textTo evaluate effects of halofuginone (H) on radiation-induced lung injury (RILI), 60 rats were divided into six groups: Group (G) 1 control, G2 radiotherapy (RT) only, G3 and G4 2. 5 and 5 g H and G5 and G6 RT + 2.5 and 5 g H groups, respectively. A single dose of 12 Gy RT was given to both lungs. H was applied intraperitoneally with daily doses, until animals were killed at 6 and 16 weeks after RT. At 6th and 16th weeks of RT, five rats from each group were killed. Lung tissues were dissected for light and electron microscopy. Chronic inflammation, fibrosis and transforming growth factor-beta (TGF)- scores of all study groups were significantly different at 6th and 16th week (p < 0.001). Chronic inflammation, fibrosis and TGF- scores of G2 were higher than G5 and G6 at 6th and 16th weeks of RT. At 16th week, fibrosis and TGF- scores of G5 were higher than G6 (p = 0.040 and 0.028, respectively). Electron microscopical findings also supported these results. Therefore, H may ameliorate RILI. The effect of the H was more prominent at higher dose and after long-term follow-up. These findings should be clarified with further studies.Konya Training and Research HospitalKonya Egitim Training & Research HospitalThe author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This study was supported by Konya Training and Research Hospital
Design and Development of a Physical and a Virtual Embodied Conversational Agent for Social Support of Older Adults
No full textPopulations in developed societies show an increasingly higher life expectancy across the globe. To support older adults to live longer and healthier lives in the familiar surroundings of their homes, technological developments, such as robots and avatars, have a great potential. To investigate long-term interactions between older adults and a "bi-bodied conversational agent" (an agent that has both an avatar and a robot embodiment), a user-centred design approach was employed in the design and development of a conversational agent. Firstly, the requirements of the agent were elicited through a set of focus groups with the target users – older adults. Then, the agent was iteratively designed and implemented: a robot body and avatar body were created. Finally, a Wizard-of-Oz control panel was created to control and compare each of the two bodies. Current research outcomes describe the elicited requirements baseline of a bi-bodied conversational agent for older adults. Future research involves the use of this set-up to investigate long-term interaction between older adults and a bibodied conversational agent
