درخت حوزه‌های تخصصی

After Arab invasions and territorial expansion in Sassanian-era Iran, Iranians resisted Umayyad and Abbasid caliphs due to bias and discrimination. Uprisings against biased Arab rulers reduced their control over the Islamic Caliphate's eastern borders, paving the way for local government formation and independence. The Abbasid caliphate, facing challenges in the west and engaging with the Byzantine Empire, was alarmed by emerging local governments like the Tahirids, Saffarids, and Samanids. To maintain influence, the Abbasid caliphate considered granting conditional independence to these regions. The Ghaznavid rulers, originally prominent commanders in the Abbasid army, grew and trained within its military structure. Supported by the people and their soldiers, they pursued independence, breaking allegiance to Baghdad and establishing their government. Initially part of the Abbasid army, these rulers, including Ghaznavid emirs, moved eastward due to conflicting interests with the Baghdad caliphate. There, they formed semi-independent structures to maintain influence.In the eastern borders, where political systems like the Ghaznavids relied on military power, the army (Sepah) and militarism played a crucial role in historical research. The central question explores how the military system and militarism in local governments, such as the Ghaznavids, contributed to their formation, development, and expansion during the early Islamic centuries. Research reveals the Ghaznavid government's military system and militarism were modeled after predecessors like the Abbasids, Umayyads, and Sassanians. Local governments like the Tahirids and Saffarids significantly influenced this evolution. Over time, Ghaznavid rule underwent fundamental changes in the army and militarism, reaching maturity in response to evolving needs.

This study examines the so-called “scribe pattern” markers identified in 62 late Proto-Elamite administrative documents housed in the Louvre Museum and the National Museum of Iran. Recent research indicates that Proto-Elamite administrative systems underwent significant developments in the methods used to authenticate and individualize documents. Archaeological evidence suggests that, in the early phases, animal and symbolic motifs predominated in seal designs; however, with the advancement of writing, these were gradually replaced by simpler linear signs. Notably, the emergence of new types of seals inspired by these linear signs characterizes the later stages of this period. These changes reflect a complex phase of interaction between ancient traditions and administrative innovations. It appears that Proto-Elamite society was actively experimenting and seeking optimal solutions for recording and verifying information. Despite recent advances in scholarship, major challenges remain in fully understanding this system, especially regarding the precise status of these markers within the administrative hierarchy. This research not only opens a new window onto the study of early administrative systems but can also inspire comparative studies of the evolution of writing in ancient civilizations. The discovery and analysis of additional examples in the future will undoubtedly clarify many of the current uncertainties.

This study investigates the bibliometric analysis on asset allocation for portfolio optimization using machine learning algorithms. The primary objective is to identify and analyze the scientific literature through bibliometric analysis to uncover key themes, authors, sources, highly-cited articles, and countries involved in portfolio management research. To achieve this, 304 articles indexed in Scopus and Web of Science from 1990 to 2023 were analyzed. Using RStudio software, the study highlights various models employed in this field, along with tables, graphs, maps, and key performance metrics related to article production and citation impact. The findings reveal an upward trend in the use of machine learning for optimal portfolio management, asset allocation, and risk management since 2016. Additionally, the United States and China emerged as leading contributors to this literature. The results provide practical insights for market participants, especially those in fintech and finance sectors, to identify optimal machine learning solutions for decision-making processes. These findings also guide students in focusing their research efforts on underexplored areas within this domain.

Background: A discourse emerged concerning hijab, creating a new perspective in public opinion and opening a path towards public awakening; this was the political sanctity of hijab unveiling. Objective: The present study, based on the hypothesis that the political sanctity of hijab unveiling is rooted in Quranic verses and aligns with historical evidence, aims to theorize the concept of the political sanctity of hijab unveiling. Methodology: This paper employs a data-driven theory-building approach.  Initially, Quranic verses were coded. Subsequently, other sources, including hadiths, scholarly articles, reports, and historical evidence of unveiling, were identified and coded.  Sub-categories were then identified in relation to the main category to form this model.  It is noteworthy that here, the grounded theory approach was primarily implemented through robust historical sources and extensive, in-depth, and precise religious research possessing sufficient richness. Findings:  Through axial coding of the data, in addition to the main category, three core categories were extracted: the religious obligation of maintaining hijab in both minimal and maximal forms as mentioned in the Quran, and hijab as a social law applicable to all Islamic countries and all citizens of an Islamic country. Results: The core phenomenon, "The theorizability of the political sanctity of hijab unveiling," with the provision of necessary conditions, yields positive consequences towards individuals' commitment to the hijab law by understanding the deep-rooted sanctity of hijab unveiling in Quranic verses, and consequently, increases the prevention of transgression.  However, to fully achieve these consequences, a strategy of meticulous planning to counter hijab unveiling as a tool to undermine the Islamic government is recommended, not only as a religious obligation but also as a symbol and indicator of the Islamic system.