درخت حوزه‌های تخصصی

Background: Low back pain is a common debilitating condition and a major clinical and socio-economic problem in the most industrialized and non-industrialized countries. Aim : The aim of this study was to compare the effect of motor control exercises and PNF exercises on postural control, strength, endurance and proprioception in women with chronic non-specific low back pain. Materials and Methods: Forty-five women with non-specific chronic low back pain selected by convenience sampling and randomly divided into three groups of 15 (motor control exercises, PNF exercises, and control group). The pre-test included posture control, flexor and extensor muscle strength of the trunk, trunk muscle endurance, and proprioception using Y balance, dynamometer, McGill, and Goniometer tests, respectively. The subjects of the experimental groups performed the training program for 8 weeks under the supervision of the instructor and according to the training protocol. Then, the post-test was performed. Paired t-test and analysis of covariance at the significance level of 0.05 were used to collect data. Results: The results showed that motor control and PNF exercises improved proprioception, postural control, endurance, and strength of trunk flexor and extensor muscles in women with non-specific chronic low back pain (α≤0.05). The results also showed that there was no significant difference between the effects of motor control and PNF exercises on proprioception, postural control, flexor muscle endurance, and extensor muscle strength (α≥0.05). Discussion: Motor control and PNF exercises are effective in improving the proprioception, postural control, endurance, and strength of flexor and extensor muscles of the trunk with non-specific chronic low back pain, and both training methods are effective in treating chronic non-specific low back pain.

Foreign trade expansion plays an important role in economic growth and development. Since Iran’s single-product economy is facing tight sanctions, among trading partners, Turkey benefits from special place, and political independence in international relations because of its large population, rising per capita income, high economic growth rate, geographical and cultural proximity to Iran. Many opportunities and substantial capacities have been established for expanding foreign trade between these two countries. To do this, it is necessary to determine the maximum export capacity of Iran to Turkey and whether this capacity has actually been deployed and realized or not. The next question is what the bases of Iran’s export development to Turkey are, and the goods which should be focused on to develop trading. Therefore, the aim of this study was to estimate the maximum export capacity of Iran to Turkey and to determine the commodities with the highest export capacity. The Revealed Comparative Advantage (RCA) index, the Cosine Index, and the General Model of the gravity model were used to evaluate Iran’s export potential and to determine commodities in which Iran has export advantage. Iran’s export potential to Turkey was investigated in various years and in different commodity groups by comparing the rate of export volume of each commodity to total volume of its import by Turkey. Research findings indicated that the highest Iranian export potential value to Turkey was $9,339 million, and just 7.2% of that ($669 million) has been realized. Also, 11 commodity groups formed more than 66% of Iranian potential exports to Turkey. Among them, ‘mineral products’ with $2,730 million, ‘plastics and natural rubber and artifacts made from them’ with 1,185 million, ‘common metals and artifacts made from them’ with $918 million, and ‘products of the chemical industry and its related industries’ with $879 million were respectively the four commodity groups with the highest export potential. JEL Classification: F14]

This research endeavors to introduce a novel concept in ethics, namely ethics based on the primacy of existence, drawing upon Aṣālat al-wujūd , the theory of the primacy of existence in ontology. Mullā Sadrā's philosophy, which has three basic tenets—the primacy of existence, substantial motion (Ḥarakat-i Juharī), and gradation in existence (Tashkīk-i wujūd)—is the basis for this doctrine. The primacy of existence holds that quiddity is a mental construct and that existence is fundamental. The writers distinguished between two conceptions of ethics in this regard: one based on existence and the other on quiddity. Human quiddity is fixed and does not grade, hence ethics based on quiddity's primacy will always be fixed and the same for every individual. Moral obligations are universal and shared by all individuals. On the other hand, moral obligations for humans might vary depending on their existential status, according to ethics grounded in the primacy of existence. Moral oughts and ought nots are established by human existential grades in this ethics. This ethical model is flexible and dynamic.

Abū Ja‘far Muḥammad Ibn ‘Alī Ibn Bābawayh al-Qumī (381 CE) is a prominent Shī‘ah scholar of the fourth century AH. Al-I‘tiqādāt, one of his prominent works, comprises of forty-five chapters. He has compiled the most important Shī‘ah beliefs evidenced with Qurānic verses and ḥadīths. The present study investigates the status of Shaykh Ṣaddūq and his Al-I‘tiqādāt in the Safavid era. The crux of this study is the analysis of impactful societal components which led to the circulation of Al-I'tiqādāt during the Safavid era. Adopting a descriptive-analytical method, the study seeks to answer the above question based on the available sources in the given era. Findings show that the cultural-religious policies determined by Shāh Ṭahmāsb, religious and educational institutions, as well as religious texts and teachings, were used to stabilize, institutionalize, and spread Shiism in Iranian society during the Safavid era, which resulted in a number of noble Shī‘ah Arabic works being rendered into Persian.