This paper focuses on strategic trade policy in the form of export subsidies in Cournot duopoly structure for differentiated goods. Export subsidies affect social welfare in both static and dynamic situations, and the aim of this paper is to analyze and compare the welfare effects of export subsidies in one-period and multi-period games in differentiated goods markets. To analyze the welfare effects of export subsidies, a two-stage game of complete but inperfect information is considered. In the first stage, two governments determine the amount of export subsidies and in the second stage, two firms determine the product level. The results show that, given that the firms’ competitiveness do not differ so much, export subsidies by both governments increase the firms’ profits and decrease social welfare of both countries. In an infinitely repeated game with different discount factors for both countries, and by adopting trigger strategy, we create some conditions, in which both governments commit free trade. However, if the competitiveness of one firm is so greater than the other, free trade using trigger strategy is not stable and the country with more competitive firm has incentive to deviate.

Background: Metaplastic breast cancer (MBC) cancer is a rare subtype of breast carcinoma and carries a worse prognosis. Chondroid DIFFERENTIATION is the rarest among all its histologic subtypes. We report a case of MBC with chondroid DIFFERENTIATION and review its clinicopathological details, genetic basis, and management. Case presentation: A 56-year female presented with right-sided large breast lump. She noticed this lump 4 months before presenting. Trucut biopsy was suggestive of invasive ductal carcinoma. She underwent breast conservation surgery and histology was consistent with MBC with chondroid DIFFERENTIATION, pT2N3aM0. Tumour was triple-negative for ER, PR, and Her-2-neu receptors. Adjuvant treatment with chemotherapy followed by radiotherapy was given and she has been doing fine during 11 months of follow-up. Conclusion: The MBC is an uncommon subtype with heterogeneity in biological and morphological features and its knowledge is paramount while evaluating a breast lump. Understanding the pathologic and molecular basis is imperative in developing the targeted therapy to improve outcomes.

Data from 183 animals raised in 61 flocks were collected to investigate the morphological characteristics of the Northern Morocco goat. Nine zoometric measures and seven combined indices were obtained. Three zones were defined based on geo-climatic characteristics and environ-mental influences: Mediterranean, Atlantic and Dual. The morphological variables showed the absence of sexual dimorphism in the northern Morocco goat population. Measures were generally very similar (n.s. at p<0.05) for male and female, except shin girth was high in males compared with females. A few variables including height at withers, ear length, rump length, length led and ears index were significantly (p<0.05) influenced by geographical area. Mahalanobis distances and Canonical analyses showed a greater distance between the most geographical separated subpopulations (Atlantic and Dual) and animals from these areas were the most heterogeneous. The stepwise procedure showed that length led, ear length, rump length and shin girth were the most discriminate variables between areas. Results suggest that the goat population of north Morocco, exhibiting different morphological variables by location, maybe due to the environmental adaptation or the differences in origin and recent influences by introgression or crossbreeding.

Background & aim: Individuals with DIFFERENTIATION of self will have healthy relationships with others, manage their emotions, take care of their own identity, and they suppose, feel, and act for themselves. Therefore, the present study aimed to examine the efficacy of self-DIFFERENTIATION training based on the Bowen’ s theory on women’ s self-DIFFERENTIATION and marital satisfaction. Methods: This quasi-experimental study was carried out using a pretest-posttest design. The participants were randomly allocated into two intervention (n=12) and control (n=12) groups in Tehan from 15 September to 15 November 2018. Two questionnaires were used in this study, namely the DIFFERENTIATION of Self Inventory and Marital Satisfaction Inventory, which were completed pre and post intervention. The intervention included ten sessions of self-DIFFERENTIATION training based on the Bowen’ s theory. The control group received no training. The collected data were analyzed using multivariate analysis of covariance by SPSS software (version 23). Results: Mean scores of age were reported as 30. 58± 3. 61 and 29. 92± 3. 18 years in the intervention and control groups, respectively. Furthermore, both groups were homogeneous regarding the educational level. The obtained results showed that self-DIFFERENTIATION approach training could significantly increase selfDIFFERENTIATION (P<0. 05) and marital satisfaction (P<0. 05). Conclusion: Based on the obtained results, the participants who apply appropriate self-DIFFERENTIATION in their lives would have enhanced ability to manage their emotions, to solve their social problems and to have higher levels of marital satisfaction.