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This paper is the first paper that systematically observes and describes all publicly available data on insider trading on the Zagreb Stock Exchange during the period of June 2010 - June 2021. To accomplish this objective both parametric and non-parametric event-study tests are conducted using the data collected from 827 notifications published on the Zagreb Stock Exchange website. After filtering the notifications for overlapping events, there were 48 insiders’ purchase events and 50 insiders’ sales events. The results indicate that insiders can earn abnormal returns on share purchases based on their insider knowledge and that the information on insider purchases can bring additional information to outside investors. However, in the case of notifications of share sales by insiders, Cumulative Average Abnormal Returns (CAARs) after the event are not statistically significant and are just slightly positive, thus bringing no abnormal returns for insiders and not conveying information to the public. This suggests that the market may perceive sales having a lower informational content, as motivation for sales may be other needs, such as liquidity.

We present a systematic study of electrical resistivity, superconductive transitions and the Hall effect for three systems of compositionally complex amorphous alloys of early (TE) and late (TL) transition metals: (TiZrNbNi)1−xCux and (TiZrNbCu)1−xCox in a broad composition range of 0

We present results of comprehensive study of electronic properties of (TiZrNbCu) 1 − x Nix metallic glasses performed in broad composition range x encompassing both, high entropy (HE) range, and conventional Ni-base alloy concentration range, x ≥ 0.35. The electronic structure studied by photoemission spectroscopy and low temperature specific heat (LTSH) reveal a split-band structure of density of states inside valence band with d-electrons of Ti, Zr, Nb and also Ni present at Fermi level N(EF), whereas LTSH and magnetoresistivity results show that variation of N(EF) with x changes in Ni-base regime. The variation of superconducting transition temperatures with x closely follows that of N(EF). The electrical resistivities of all alloys are high and decrease with increasing temperature over most of explored temperature range, and their temperature dependence seems dominated by weak localization effects over a broad temperature range (10–300 K). The preliminary study of Hall effect shows positive Hall coefficient that decreases rapidly in Ni-base alloys.

We investigate the dc resistivity and Hall effect of the quasi-two-dimensional organic materials κ–(ET)2X, where X=Ag2(CN)3 and B(CN)4 and compare them with the results for X=Cu2(CN)3. All three compounds are considered to be quantum-spin-disordered Mott insulators. Despite high similarities in chemical composition and crystal structure, large differences in the dc resistivity and Hall coefficient are found. While around room temperature the dc transport properties are dominantly determined by the strength of the electron correlations, upon reducing the temperature, dc transport happens by hopping due to inherent disorder. The most disordered compound with X=Cu2(CN)3 turns out to have the lowest dc resistivity and the highest charge carrier density, i.e., in the phase diagram it is located closest to the metal-insulator transition. The least disordered compound with X=B(CN)4 shows the highest resistivity and the lowest carrier density, i.e., lies farthest from the metal-insulator transition. We explain such counterintuitive behavior within the theory of Mott-Anderson localization as a consequence of disorder-induced localized states within the correlation gap.

The cobalt-based Heusler alloys are promising for spintronic applications, thanks to their high spin polarization and half-metallic character. This work investigates the spin-dependent transport and thermoelectric effects in epitaxial Co${}_{2}$TiSn thin films, with and without V doping. The anomalous Nernst angle and anomalous Hall angle are both determined, and the relationship between these two important parameters is discussed. These experimental results are a step toward realizing spin-caloritronic devices for efficient on-chip energy harvesting of waste heat.

The Mott insulator κ-(BEDT-TTF)2Ag2(CN)3 forms a highly-frustrated triangular lattice of S = 1/2 dimers with a possible quantum-spin-liquid state. Our experimental and numerical studies reveal the emergence of a slight charge imbalance between crystallographically inequivalent sites, relaxor dielectric response, and hopping dc transport. In a broader perspective we conclude that the universal properties of strongly-correlated charge-transfer salts with spin liquid state are an anion-supported valence band and cyanide-induced quasidegenerate electronic configurations in the relaxed state. The generic low-energy excitations are caused by charged domain walls rather than by fluctuating electric dipoles. They give rise to glassy dynamics characteristic of dimerized Mott insulators, including the sibling compound κ-(BEDT-TTF)2Cu2(CN)3.

There has been much attention and debate on global integration versus local responsiveness and likewise whether to standardize or adapt to local circumstances when operating abroad. It is believed that the world is globalized more than ever, but how does that reflect on businesses and multinational corporations? According to Rugman’s research at the beginning of the 2000s, only few corporations from the Fortune Global 500 could be actually considered as global, with truly global sales and operations. By Rugman’s methodology, corporations were classified as home-region oriented, bi-regional, host-region oriented, “near miss” global, or global. Regions North America, Europe, and Asia Pacific are determined as equivalent geographical regions. Similar research was conducted based on the Fortune Global 500 2012 ranking, 10 years later. Changes have happened. For example, out of nine truly global corporations in 2002, only three remained global in 2012. These are IBM, Sony, and LVMH. Furthermore, stream of revenues have changed for many other MNCs due to their internal strategic decisions and due to external market forces. All these relevant aspects are discussed in the chapter.