Portfolio Optimization and Random Matrix Theory in Stock Exchange by mostafa heidari haratemeh

“…This research was done using the descriptive-correlation method and is of an applied research type.Findings: The results showed: a) Observing the most extensive distribution of eigenvector components, it can be seen that there is a solid asymmetry to the left of the distribution, meaning that the market responds more to bad events than good events. b) By clearing the correlation matrix, the difference between the predicted and realized risk can be slightly reduced. …”
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Choosing the optimal dilution medium for pooled platelet concentrates, thawed after cryopreservation by M. S. Makarov, M. V. Storozheva, N. V. Borovkova, A. Yu. Bulanov, I. N. Ponomarev

“…Background. The current methods of cryopreservation, working with pooled platelet concentrates (PPC), require optimization. …”
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Research on mechanisms for optimizing the risk resistance capability of hypernetworks by Lei Chen, Xiujuan Ma, Fuxiang Ma, Yalan Li

“…The research results indicate that both mechanisms effectively improve the hypernetwork’s risk resistance, but the optimization effects differ. When the number of recombined hyperedges is 0.2*M (where M is the total number of hyperedges in the hypernetwork), the BIP of the random recombination mechanism stabilize at 25%, while the BIP of the low preference recombination mechanism ultimately reaches about 65%. …”
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IDENTIFYING THE HR EXPECTATIONS – PILLAR FOR OPTIMIZING THE LEADERSHIP STYLE by Elena Mihaela ILIESCU, Florin LUNGU

“…With this premise in mind, the objective of this research is to highlight the importance of the new approach, emphasizing that through a better understanding of employee profiles and expectations, leaders can adjust their leadership methods to optimize organizational performance. By embracing an adaptive and personalized approach, leadership becomes a determining factor in increasing organizational performance and motivation. …”
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Optimal Correction of Adult Spinal Deformities Requires Restoration of Distal Lumbar Lordosis by S. Pesenti, S. Prost, A. Muñoz McCausland, K. Farah, P. Tropiano, S. Fuentes, B. Blondel

“…Specific attention must be paid to restore optimal distal lumbar lordosis in order to set the amount and the distribution of optimal postoperative lumbar lordosis.…”
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Optimal Zero-Defect Solution for Multiple Inspection Items in Incoming Quality Control by Wenqing Zhou, Yufeng Chen

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Finding the optimal way to build an information security system based on Markov chains by A. M. Konakov, I. I. Livshits

“…Method. In this subject area, the possibilities of structural-parametric models and Markov chains for identifying the optimal line for constructing a multi-level information security system are considered. …”
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Optimization of vasomotor and neuropsychiatric disorders treatment in climacteric syndrome by О. H. Horbatiuk, А. P. Hryhorenko, А. S. Shatkovska, А. M. Binkovska, V. Yu. Onyshko, О. Kh. Gerich

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Optimal stenting duration following ureteroscopy and nephrolithotomy: systematic review and meta-analysis by Breno C. Porto, Nathalie. C. hobaica, Carlo C. Passerotti, Rodrigo A. S. Sardenberg, Jose P. Otoch, Jose Arnaldo Shiomi da Cruz

“…Conclusion Although no significant difference was observed in overall PRE rates, the distinct patterns of complications based on stent duration highlight the complexity of determining optimal stent placement time in clinical practice.…”
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Interpretable Machine Learning for Population Spatialization and Optimal Grid Scale Selection in Shanghai by Yuan Cao, Hefeng Wang, Lanxuan Guo, Anbing Zhang, Xiaohu Wu

“…However, when using machine learning methods for population spatialization, issues such as data overfitting and limited interpretability need to be addressed. …”
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Determination of the Optimal Biotechnological Parameters for Industrial Production of Protein Hydrolysates for Animal Feed by Marina Belyshkina, Tamara Kobozeva, Mikhail Zagoruiko, Oksana Serebryakova, Maisoon Shaaban, Tatiana Ananeva, Igor Bashmakov

“…Therefore, several processing methods such as extrusion and hydrolysis are used to overcome these disadvantages and increase the availability of high-quality proteins to animals from this by-product. …”
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Analyzing Optimal Wearable Motion Sensor Placement for Accurate Classification of Fall Directions by Sokea Teng, Jung-Yeon Kim, Seob Jeon, Hyo-Wook Gil, Jiwon Lyu, Euy Hyun Chung, Kwang Seock Kim, Yunyoung Nam

“…Falls represent a significant risk factor, necessitating accurate classification methods. This study aims to identify the optimal placement of wearable sensors—specifically accelerometers, gyroscopes, and magnetometers—for effective fall-direction classification. …”
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Optimal distance of an external focus of attention in standing long jump performance of athletes by Gh. Lotfi

“…Material and Method: 51 volunteer students (M age= 23.31 ± 5.26 years) were selected as sample. …”
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Constructing the optimal experimental autoimmune thyroiditis mouse model using porcine thyroglobulin by Ke Liu, Pei Zhang, Zi-Shan Jin, Xiang-Kun Meng, Jin-Li Luo, Jin-Li Luo, Jin-Li Luo, Lin Han, Xiao-Tong Yu

“…This study systematically compares pathological and immunological effects of different immunization conditions (antigen dose, frequency, administration methods) in NOD/LtJ mice to establish an optimal model for elucidating AIT pathogenesis and therapies.MethodsEighty female NOD/LtJ mice were divided into subcutaneous (SC) and tail vein intravenous (IV) injection groups. …”
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Optimal use of procalcitonin to rule out bacteremia in patients with possible viral infections by Kaoutar Azijli, Tanca C. Minderhoud, Carlijn J. deGans, Arthur W.E. Lieveld, Prabath W.B. Nanayakkara

“…The aim of this study is to investigate whether the optimal use of procalcitonin (PCT) is different in patients with and without proven viral infections for the purpose of excluding bacteremia. …”
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Optimal Design of CPU Water-cooled Radiator in a Data Center Server by Zhu Kai, Liu Zekuan, He Wei, Chai Xiang

“…The optimal combination of F index and F index radiator is obtained according to different needs. …”
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Dynamics analysis and optimal control of a fractional-order lung cancer model by Xingxiao Wu, Lidong Huang, Shan Zhang, Wenjie Qin

“…We then performed numerical simulations of limit cycles, chaos, and bifurcation phenomena under uncontrolled conditions, as well as the dynamic behavior of cells under different control strategies. Finally, using real data from lung cancer patients, we conducted parameter estimation and curve fitting through the least squares method. …”
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Federated deep reinforcement learning-based urban traffic signal optimal control by Mi Li, Xiaolong Pan, Chuhui Liu, Zirui Li

“…The proposed method effectively optimizes intersection access efficiency with excellent robustness under various traffic flow settings.…”
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Optimal selection test of material ratio in the top of Ordovician limestone grouting reconstruction by Zhenli FAN, Lutong CAO, Fengda ZHANG, Xiwen YIN, Qiuyang ZHAO, Zhiwei ZHANG

“…The grouting material ratio varies across different stages of grouting. The comprehensive balance method yielded three material ratio schemes tailored for various grouting stages. …”
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The Optimal Operation Strategy of an Energy Community Aggregator for Heterogeneous Distributed Flexible Resources by Xinyi Yang, Tao Chen, Yuanshi Zhang, Ciwei Gao, Xingyu Yan, Hongxun Hui, Xiaomeng Ai

“…The day-ahead dispatch is combined with the Model Predictive Control (MPC) method to achieve fine-grained rolling adjustment of the power dispatch instructions of distributed resources with different time scales. …”
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