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System dynamic modeling of conflicts within Turkey and between Turkey and her neighbors

Boz, C.M. | Basoglu, A.N. | Oner, M.A.

Conference Object | 2002 | PICMET

A system dynamic modeling of conflicts within Turkey and between Turkey and her neighbours were presented. The dynamic structure of international and domestic conflict was explored by defining population, technology, military expenditure and income equality level. It was observed that the system dynamics was the best tool to examine the major processes that generate conflict and warfare within and between nations.

Technology processes management capability profiles of machine manufacturers in Turkey

Yildirim, O.U. | Oner, M.A. | Basoglu, A.N.

Conference Object | 2002 | PICMET , pp.455 - 456

A research about the technology management practices and draw technology management profiles of machine manufacturing industry in Turkey was presented. The research provided a means to assess the effectiveness of the critical technology management activities, and identify areas of improvement. It intended to diagnose and identify the actual reasons for deficiency in management of technology processes.

Dental caries and dental health care of high income family children in Turkey.

Nulhantoglu, ER | Kavaloglu, S | Guzeltirpun, E | Sandalli, N

Conference Object | 2002 | JOURNAL OF DENTAL RESEARCH81 , pp.455 - 456

Media content analysis by MORN to determine anticipated megatrends in Turkey: A factor-analytic approach

Kok, M.S. | Basoglu, A.N. | Oner, M.A.

Conference Object | 2002 | PICMET , pp.455 - 456

The megatrends in Turkey were discussed. Media content analysis by MORN was done using factor-analytic approach. Results showed that most of the respondents disagree on the trends obtained from Germany and Austria. It was also found that respondents believe that technological developments cause social problems such as unemployement and energy consumption rationing.

Cytokine profile of patients with amlodipine-induced gingival overgrowth.

Kose, KN | Kuru, L | Noyan, U | Kuru, B | Yilmaz, S

Conference Object | 2002 | JOURNAL OF DENTAL RESEARCH81 , pp.455 - 456

An interactive approach for hierarchical analysis of helicopter logistics in disaster relief operations

Barbarosolu, G. | Özdamar, L. | Çevik, A.

Article | 2002 | European Journal of Operational Research140 ( 1 ) , pp.118 - 133

This study develops a mathematical model for helicopter mission planning during a disaster relief operation. The decisions inherent in the problem decompose hierarchically into two sub-problems where tactical decisions are made at the top level, and the operational routing and loading decisions are made at the base level. Consistency between the decomposed problems is achieved with an iterative coordination procedure which transfers anticipated information from the base level to improve the top level decisions. The existence of conflicting multiple objectives in this hierarchical structure requires the development of a multi-criteri . . .a analysis, and an interactive procedure is designed with the top level decision-maker to assess the preference of alternative non-dominated solutions. © 2002 Elsevier Science B.V. All rights reserved Daha fazlası Daha az

Effect of galium arsenide diode laser on human periodontal disease: A microbiological and clinical study

Yilmaz, S. | Kuru, B. | Kuru, L. | Noyan, L. | Argun, D. | Kadir, T.

Article | 2002 | Lasers in Surgery and Medicine30 ( 1 ) , pp.60 - 66

Background and Objective: The present study is aimed to describe short-term results on selected microbiological and clinical parameters obtained by treatment with soft laser in conjunction with methylene blue and/or mechanical subgingival debridement in human periodontal disease. Study Design/Materials and Methods: Ten patients, in whom each dental quadrant was randomly designated to receive one of four types of treatment procedures, were included in the study. Groups of quadrants received: scaling/root planing (SRP); laser application (L); SRP combined with L (SRP/L); oral hygiene instructions (OHI). Four single rooted teeth (one i . . .n each quadrant), having an interproximal site with a probing depth of 4 mm mesio-buccally, were selected in each patient. The selected teeth were first assessed for microbiological (one site/ tooth) and then for clinical variables (six sites/tooth). Supragingival irrigation with methylene blue was performed prior to laser application. The microbiological (proportions of obligate anaerobes) and clinical measurements (plaque and gingival indices, bleeding on probing, probing pocket depth) were evaluated over a period of 32 days. Results: Only the SRP/L and SRP groups provided significant reductions in the proportions of obligate anaerobes before and after treatments with no significant differences in between. Parallel to the microbiological changes, both SRP/L and SRP resulted in similar clinical improvements, whereas L alone revealed a limited effect similar to OHI. Conclusion: Within the limits of this study, methylene blue/soft laser therapy provided no additional microbiological and clinical benefits over conventional mechanical debridement. © 2002 Wiley-Liss, Inc Daha fazlası Daha az

Improvement of targeting efficiency in chaos control using clustering

Sutcu, Y | Iplikci, S | Denizhan, Y

Conference Object | 2002 | COMPUTING ANTICIPATORY SYSTEMS627 , pp.514 - 522

In this paper an improved version of the previously presented ECR (Extended Control Regions) targeting method is proposed, where the system data is first pre-processed and subdivided into clusters, and then one artificial neural network is assigned to each such cluster. Furthermore, an analytical criterion for determining the region of the current system state during targeting is introduced, whereas in the original ECR method the region information was hidden in the neural networks. Simulation results on several chaotic systems show that this modified version of the ECR method reduces the average reaching time and in general also th . . .e training time of the neural networks Daha fazlası Daha az

Photochemical rearrangement of salicylideneaniline in solution

Bayrakçeken, Fuat | Özceylan, M.

Article | 2002 | Asian Journal of Spectroscopy6 ( 3 ) , pp.119 - 123

Salicylindeneaniline originally crystallized from a solution has lemon yellow colour. Irradiation with near ultraviolet causes the colour change from yellow to red. The red state changes spontaneously back to yellow. This change is accelerated by visible light. Kinetic data are reported in the temperature range between 18.5 and 55°C, for the dark fading reactions of the coloured isomers formed by the ultraviolet irradiation. First order reactions were observed, activation energies and entropies of activation are reported. The observation of T-T absorption was complicated due to coloured isomer formation during the optical pumping.

Tam protez ve overdenture kullanan hastaların proprioseptif yetenek açısından karşılaştırılması

Köksal, Temel

Article | 2002 | Hacettepe Dişhekimliği Fakültesi Derg.(. Clinical Dentistry and Research)26 ( 2 ) , pp.15 - 25

Overdenture (diş destekli tam protez) kullananlarda korunan köklerin, derinduyusal (proprioseptif) yeteneğe katkıları olup olmadığının saptanması için, bu tür ve klasik tam protez kullanan hastalarda boyutsal duyarlık ve önceden saptanan eksentrik çene konumlarını tekrarlayabilme yeteneği ölçüldü. Deney grubunu oluşturan 10 hastaya yapılan diş destekli tam protezler modifiye edilerek deneyde klasik tam protez olarak da kullanıldı. Tam protez kullanan 10 dişsiz hasta ise kontrol grubu oldu. Deneyler sonucunda overdenture'ların klasik tam protezlerden daha üstün derinduyusal yetenek sağladıkları saptandı. Dimensional sensibility and t . . .he ability to reproduce predetermined eccentric jaw movements were evaluated on both, overdenture and conventional complete denture wearers, to determine whether the preserved roots under the overdenture contribute to proprioceptive ability. Tooth-supported complete dentures, constructed for 10 test group patients, were modified to use as conventional complete dentures also. Another 10 complete denture wearers created the control group. After the tests were performed, it was determined that overdentures had superiority over conventional complete dentures in regard to proprioceptive ability Daha fazlası Daha az

Flow sitometre ile nötrofillerin oksidatif patlama aktivitesi ölçülebilir mi?

Budak, Yasemin | Işıtmangil, Gülbu | Taga, Yavuz

Other | 2002 | İstanbul Üniversitesi İstanbul Tıp Fakültesi Mecmuası65 ( 2 ) , pp.137 - 141

Nötrofil fonksiyonlarının ölçüm yöntemleri oldukça zahmetlidir ve standardize edilmeleri zordur. Nötrofil fonksiyonları flow sitometre yöntemleri ile incelenebilmektedir. Bu çalışmada nötrofillerin oksidatif patlama aktivitesi flow sitometre'de modifiye edilmiş tekniklerle ölçüldü. Hücreler oksidatif patlama için phorbol 12-myristate 13-acetate ile uyarıldı. Çalışmada nötrofillerin spontan oksidatif patlama aktivitesi çok düşük olmasına rağmen, uyarıldıktan sonra 5. dakikada başlayarak ve 15. dakikada %99'a ulaşmaktaydı. Fagositoz aktivitesi için aynı metot ve Escherichia coli kullanıldı. Hücrelerin %46'sı 45. dakikada fagositoz yap . . .maktaydı. Bu çalışmadaki bulgularımıza göre flow sitometre, oksidatif patlama ve fagositoz gibi nötrofil fonksiyonlarının ölçümünde kullanılabilecek bir metotdur. Measurement of neutrophil functions are labor intensive and often very diffucult to standardize. In this study oxidative burst activity of neutrophils has been measured by modified techniques of flow cytometry. We activated the cells with phorbol 12-myristate 13-acetate. This induction causes an increase in oxidative burst activity which begins at the 5th minute and reaches to %99 percent at 15th minute. The same method and Escherichia coli was used for phagocytosis activity. We found that 46% of cells showed phagocytosis activity at the 45th minute. According to these results, flow cytometry can be used for measurement of oxidative burst activity and phagocytosis of neutrophils Daha fazlası Daha az

High resolution discreate optical absorption spectra of spectroscopically pure silicon dioxide in UV-C

Bayrakçeken, Fuat

Article | 2002 | Asian Journal of Spectroscopy6 ( 2 ) , pp.73 - 76

Ultraviolet light induced high resolution optical absorption spectra of high purity silicon dioxide have been studied. An ultraviolet discreate absorption spectra were recorded photographically between 200-300 nm. Resonance fluorescence was observed at 288.2 nm, and around this region, Raman resonance scattering were also recorded at room temperature by flash photolysis technique.

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