Vakalarla iceriden ogrenenler ticareti tarihi ve duzenlemeleri

In an efficient market that has reduced systematic risk, the essential requirement of accurate pricing of financial instruments is equal access to the information, namely, disclosure. Insider trading as one of the problems related asymmetric information on financial markets prevents market transparency and beats investors' confidence. For this reason, the transmission of accurate and timely disclosed inside information to investors is intended to prevent monopolization and the use of privileged information that is unknown to everyone is prohibited in many markets around the world. In this study, the historical evaluation of insider trading with important cases beginning from the birth of stock markets is addressed. The regulations of insider trading is sorted in chronological order and referred to prosecuted cases. Moreover, EU regulations on insider trading is mentioned and the approach of new Capital Market Law No. 6362 which came into force on 2012 to insider trading is discussed. It is concluded that, the penal provisions on insider trading that can cause misappropriation must be clearly defined.peer-reviewe

Jet Triggers and Dijet Mass

We propose single jet triggers for CMS and simulate an analysis of the dijet mass distribution based on these triggers. A full trigger table for single jets is developed, including thresholds and prescales at L1 and HLT. The evolution of the table with instantaneous luminosity is presented, and the rates expected from the trigger are estimated. We present an analysis of the QCD dijet mass distribution that would result from taking data with this trigger. For three different samples of data corresponding to 100 pb^-1, 1 fb^-1, and 10 fb^-1 we estimate the expected statistical and systematic uncertainty on the cross section versus dijet mass

CMS search plans and sensitivity to new physics with dijets

CMS will use dijets to search for physics beyond the standard model during early LHC running. The inclusive jet cross section as a function of jet transverse momentum, with 10 inverse picobarns of integrated luminosity, is sensitive to contact interactions beyond the reach of the Tevatron. The dijet mass distribution will be used to search for dijet resonances coming from new particles, for example an excited quark. Additional sensitivity to the existence of contact interactions or dijet resonances can be obtained by comparing dijet rates in two distinct pseudorapidity regions.Comment: 10 pages, 4 figures, accepted for publication in J. Phys. G: Nucl. Part. Phy

The Effect of Teacher Candidates on Burnout Levels During the Pandemic Process

With the global pandemic, the education model has changed and education has moved to online environments around the world. It is the role of the teacher that does not change in this change in education. In this study, it is aimed to reveal the effect of future teacher candidates, who are students in the pandemic period, on the burnout levels. The research was carried out with the case study technique, which is one of the qualitative research methods. 32 teacher candidates participated in the research. Research data were collected through a semi-structured interview form and analyzed with content analysis technique. As a result of the research, it was concluded that the participants felt exhausted and tired due to the limitations experienced in the pandemic process, and this caused some difficulties in education. While prospective teachers had a positive view of the use of technology regarding the future of their profession, it was determined that the lack of practical courses in particular caused anxiety

CMS Sensitivity to Quark Contact Interactions using Dijets

We estimate CMS sensitivity to quark contact interactions in the dijet final state. The canonical model of a contact interaction among left-handed composite quarks changes the dijet angular distribution at high dijet mass. The dijet ratio variable introduced at the Tevatron is used as a simple measure of the angular distribution as a function of dijet mass. The contact interaction signal and QCD background are estimated for the dijet ratio as a function of dijet mass from 0.3 to 6.5 TeV. Statistical uncertainties are estimated for integrated luminosities of 100 pb^-1, 1 fb^-1, and 10 fb^-1 and a realistic trigger table including multiple thresholds and prescales for the single jet triggers. Systematic uncertainties on the dijet ratio are estimated and are found to be small. The chisquard between the background and the signal is estimated, including systematics, and is used to find CMS sensitivity to the contact interaction scale Lambda^+. For an integrated luminosity of 100 pb^-1, 1 fb^-1, and 10 fb^-1, CMS can expect to exclude at 95% CL a Lambda^+ value of 6.2, 10.4, and 14.8 TeV or discover at 5 sigma significance a Lambda^+ value of 4.7, 7.8 and 12.0 TeV, respectively

Oxidative photopolymerization of 3,4-ethylenedioxythiophene (EDOT) via graphitic carbon nitride : a modular toolbox for attaining PEDOT

Conductive polymers found key applications ranging from optoelectronics and OLEDs to conductive composite materials. The synthesis of conductive polymers from monomers such as thiophene derivatives, pyrroles and aniline mainly relies on oxidative polymerization, and the processing of so-formed (insoluble) polymers is a major issue that needs to be addressed. In the present work, oxidative photopolymerization of 3,4-ethylenedioxythiophene (EDOT) by visible light employing the metal-free semiconductor graphitic carbon nitride (g-CN) is presented. Two main reaction pathways based on g-CN content will be described, and the formation of processable oligo-EDOT will be demonstrated

On the photopolymerization of mevalonic lactone methacrylate : exposing the potential of an overlooked monomer

Functional polymers remain at the core of polymer science in the second century of macromolecular material research. Lactones are known as monomers for ring-opening polymerizations; however, polymers containing lactone rings as pendant groups are rare. In this study, we revive an overlooked monomer, mevalonic lactone methacrylate, by demonstrating its radical polymerization, reporting the properties of the polymer product, and providing information on the thermal, UV, and hydrolytic stabilities of both the monomer and polymer. Controlled polymerization (via RAFT) provides synthetic precision and active terminal groups; thus, the formation of a simple block copolymer based on the aforementioned polymer is presented. The pendant ring accepts nucleophilic attacks, so the initially hydrophobic polymer can be altered to make it hydrophilic via reactions with nucleophiles in just seconds. Thus, the polymer film provides responsive surface formation