Mixed Oligopoly, privatization and strategic trade policy: a note

In debates over privatization and global competition mixed Cournot oligopoly models have been used to show that the presence of a state-owned enterprise in the host country is always associated with a distortionary effect that may justify privatization even if the public firm is just as efficient as its private counterparts. This study argues that this result is valid only under Cournot competition and Cournot competition is not a plausible modelling assumption in this context because in this type of market the firms’ simultaneous play strategies lack credibility.Privatization; Mixed oligopoly; Strategic Trade Policy

Finding Two Disjoint Simple Paths on Two Sets of Points is NP-Complete

Finding two disjoint simple paths on two given sets of points is a geometric problem introduced by Jeff Erickson. This problem has various applications in computational geometry, like robot motion planning, generating polygon etc. We will present a reduction from planar Hamiltonian path to this problem, and prove that it is NP-Complete. To the best of our knowledge, no study has considered its complexity up until now. We also present a reduction from planar Hamiltonian path problem to the problem of finding a path on given points in the presence of arbitrary obstacles and prove that it is NP-Complete too. Also, we present a heuristic algorithm with time complexity of O(n4) to solve this problem. The proposed algorithm first calculates the convex hull for each of the entry points and then produces two simple paths on the two entry point set

Market distortions and public enterprise strategies in an international mixed oligopoly

This study investigates the possible sources of distortions in an international mixed oligopoly. We extend the existing linear/quadratic model to a general framework and show that a public enterprise may either serve as a regulatory device or may itself create an additional level of distortion. Which of these is the case depends critically on the timing of firms output decisions. We then extend the basic quantity setting game to incorporate a preplay stage at which firms can choose the timing of action, rather than moving in an exogenously imposed sequence, in order to determine endogenously the equilibrium sequence of moves. We argue that the distortions associated with a public enterprise and the welfare gain of privatization found in earlier studies can be attributed to an arbitrary and unjustified modeling assumption concerning the order of play, rather than to public ownership.Privatization; International Mixed Oligopoly; Strategic Trade Policy

Ground state heavy baryon production in a relativistic quark-diquark model

We use current-current interaction to calculate the fragmentation functions to describe the production of spin-1/2, spin-1/2$'$ and spin-3/2 baryons with massive constituents in a relativistic quark-diquark model. Our results are in their analytic forms and are applicable for singly, doubly and triply heavy baryons. We discuss the production of $\Omega_{bbc}$, $\Omega_{bcc}$ and $\Omega_{ccc}$ baryons in some detail. The results are satisfactorily compared with those obtained for triply heavy baryons calculated in a perturbative regime within reasonable values of the parameters involved.Comment: 8 pages, 4 figures. To appear in Phys. Rev.

The effect of innovation climate on the quality of clinical services and knowledge transfer among nurses of Guilan province

Background and aims: The quality of service and knowledge transfer is very important in health sectors due to the specific atmosphere in health centers and the presence of nurses as the largest treatment group. In this research, The aim of the study was to investigate the effect of innovative organizational climate on the transfer of knowledge and quality of clinical services from nurses' point of view. Methods: This is a descriptive-survey study.The statistical population includes the nurses from Guilan province in 2016 that 350 nurses were selected as a statistical sample by randomization sampling. Three questionnaires innovation climate: 9 dimensions and 50 questions. Quality of services Questionnaire: 5 dimensions and 21 questions and knowledge transfer Questionnaire with 12 questions were used for collecting data. The reliability of the research tools was 0.89 for the innovation climate, knowledge transfer 0.89 and service quality 0.88, respectively. Data analysis was carried out using structural equation modeling using smartpls 2 software. Results: The results showed that the atmosphere of innovation, service quality, and knowledge transfer with an average of 3.4, 3.3, and 3.08 have a good status. Also, the atmosphere of innovation on knowledge transfer and service quality with path coefficients of 0.67 and 0.33 has a positive and significant effect. Conclusion: Improvement in the areas of innovation climate can help improve the quality of hospital services and knowledge transfer. Therefore, managers and decision makers in the field of health should consider these issues

Phytotherapy in aspergillus: An overview of the most important medicinal plants affecting aspergillus

Aspergillosis can cause wide range of diseases such as abortion, respiratory infections and food poisoning. The emergence of drug-resistant fungal species has caused attention to be focused on developing new therapies against fungi. Some plant species have been identified antifungal properties. Because of the importance of fungal diseases, such as Aspergillus, in this study the effect of antifungal medicinal plants native to Iran, was introduced. The review carried out by searching scientific databases such as Google Scholar, SID, etc, key words, including fungi, Aspergillus, herbs and Iran to relevant articles were searched and were studied. Diagram of the present review were as follows. Zataria multiflora Boiss., Thymus eriocalyx, Mentha pulegium, Satureia hortensis, Secale montanum, Artemisia, Petroselinum crispum, Acimum basilicum, Anethum graveolens, Mentha viridis, Cuminum cyminum, Cinnamomum zeylanicum, Aloe vera, Rosa damascena, Coriandrum sativum Origanum majorana, Myrtus Communis L and Glycyyrhiza glabra are the most important medicinal plants against Aspergillosis. Important compounds such as Carvacrol, Thymol, Palmitic acid, Apiol, Methyl chavicol, Caryophyllene oxide, Cimonene, Camphene, Mircen and Myrtenal, Menthol, Caryophyllene, Mentone and ect includes the active compounds of medicinal plants that have antibacterial and antifungi effects, which can be described as a combination of proven anti-Aspergillus context. © 2016, Sphinx Knowledge House. All rights reserved

The relationship between attachment style and perception of parental affection with test anxiety in gifted students

Background and Aim: Given the importance of test anxiety among gifted students, the present research was conducted to study the relationship between perception of parent’s affection and attachment styles with test anxiety. Materials and Methods: By means of simple random sampling, 300 subjects were selected out of all the gifted students in Khorramabad. Test Anxiety, perception of parents affection, and attachment styles questionnaires were used for collection data. Results: To analyze the data, Pearson correlation and regression were applied. The results showed that anxiety and avoidant attachment style and perception of father love predict test anxiety among both boys and girls in gifted student's school. However, there was not a meaningful relationship between attachment style and perception of mother love with test anxiety. Moreover, totally the results indicated that 9 percent of changes in test anxiety were predicted by attachment styles and perception of parent’s affection. And anxiety attachment style and perception of father love predict test anxiety. ‍Conclusion: According to the results if an individual has an avoidant attachment style he will experience the higher level of test anxiety

PHYTOTHERAPY IN FUNGI AND FUNGAL DISEASE: A REVIEW OF EFFECTIVE MEDICINAL PLANTS ON IMPORTANT FUNGAL STRAINS AND DISEASES

Infectious diseases are among the most important common diseases worldwide that bring stupendous costs for human community. Medicinal plants are considered a rich source of antimicrobial agents and therefore can be used as antimicrobial remedies because of producing secondary metabolites. This article was designed to review the effective medicinal plants on fungi and fungal disease. In this study, the relevant articles published in Persian and English languages were searched for in the databases Magiran, Iranmedex, Irandoc, PubMed, Scopus, SID, Web of Science, and Science Direct using the search engine Google Scholar. To maximize the comprehensiveness of the search, the general terms antimicrobial, dermatophyte, mycotic, Iran, and anti-Candida as well as their Persian equivalents were used. AND and OR were used for combining searches. Medicinal herbs such as Zataria multiflora, Thymus vulgaris, Thymus kotschyanus, Punicagranatum L., Rosmarinus officinalis L., Matricaria chamomilla L., Urtica dioica L., Mentha piperita L. and Salvia officinalis L., Thymus vulgaris, Salvia officinalis, Eucalyptus globulus, Myentha piperita, Oliveria decumbens, Echinophora Platyloba, Thymus eriocalyx and Thymus X-porlock, Achillea millefolium, Artemisia sieberi, Cuminum cyminum, Nigella sativa, Heracleum persicum, Hyssopus officinalis, Matricaria recutital, Menta spicata, Foeniculum vulgare, Pimpinella anisum, Plargonium graveolens, Rosmarinus officinalis, Saturia hortensis, Zataria multiflora, Thymus kotschyanus, Zataria multiflora, Ziziphora clinopodioides, Mentha piperita L., Physalis alkekengi L., Hymenocrater longiflorus Benth and are the most important Medicinal herbs effective on fungal diseases. Medicinal herbs mentioned in this study due to phenolic compounds and antioxidant activities have antifungal effects