Terrain visibility optimization problems

Ankara : The Department of Industrial Engineering and the Institute of Engineering and Sciences of Bilkent University, 2001.Thesis (Master's) -- Bilkent University, 2001.Includes bibliographical references leaves 92-96The Art Gallery Problem is the problem of determining the number of observers necessary to cover an art gallery such that every point is seen by at least one observer. This problem is well known and has a linear time solution for the 2 dimensional case, but little is known about 3-D case. In this thesis, the dominance relationship between vertex guards and point guards is searched and found that a convex polyhedron can be constructed such that it can be covered by some number of point guards which is one third of the number of the vertex guards needed. A new algorithm which tests the visibility of two vertices is constructed for the discrete case. How to compute the visible region of a vertex is shown for the continuous case. Finally, several potential applications of geometric terrain visibility in geographic information systems and coverage problems related with visibility are presented.Düger, İbrahimM.S

Discharge and exclusion in joint stock companies

Anonim Şirketler Türkiye'de tüzel kişiliklerinin bulunması ve ortaklarının sınırlı sorumlu olmasından dolayı en çok tercih edilen ortaklık türlerinden biridir. Ortaklar sınırlı sorumlu olduğundan sadece katılma payı tehlikeye atılır ve böylece bu şirketlerin bünyesinde büyük miktarda paralar toplanabilir. Anonim şirketleri diğer şirket türlerinden ayıran en temel özellik, kişisel unsurlara bu şirketlerde asgari düzeyde yer verilmiş olmasıdır. Anonim şirketler ülkelerin ekonomik yaşantısı üzerinde önemli etkiye sahip olduğundan dolayı diğer şirket türlerinden farklı bazı düzenlemelere tabi tutulmuştur. Bu çalışmada Türk Ticaret Kanunundaki anonim şirketlerden çıkma ve çıkarılmaya sebep olan haller sonuçları ile birlikte incelenecektir.Joint stock companies is one of the most preferred partnerships because they have their legal entities and their partners are limited, only shares are at risk and a large amount of Money can be collected within companies. The main property which distinguishes joint stock companies from other companies is that the personal features are observed in these companies at the minimum level. As joint stock companies are important on the economic life of countries, they are subject to some regulations as to other company types. In this study, the issues which lead to the discharge and exclusion from joint stock companies in the Turkish Commercial Code will be examined together with its results