Iranian Journal of Science and Technology, Transactions A: Science最新文献_第2页

Hankel and Toeplitz Determinants of Logarithmic Coefficients of Inverse Functions for Certain Classes of Univalent Functions

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2024-09-28 DOI: 10.1007/s40995-024-01717-6

Sanju Mandal, Partha Pratim Roy, Molla Basir Ahamed

{"title":"Hankel and Toeplitz Determinants of Logarithmic Coefficients of Inverse Functions for Certain Classes of Univalent Functions","authors":"Sanju Mandal, Partha Pratim Roy, Molla Basir Ahamed","doi":"10.1007/s40995-024-01717-6","DOIUrl":"10.1007/s40995-024-01717-6","url":null,"abstract":"<div>The Hankel and Toeplitz determinants (H_{2,1}(F_{f^{-1}}/2)) and (T_{2,1}(F_{f^{-1}}/2)) are defined as: (H_{2,1}(F_{f^{-1}}/2):=Gamma _{1}Gamma _{3} -Gamma ^2_{2}) and (T_{2,1}(F_{f^{-1}}/2):=Gamma ^2_{1}-Gamma ^2_{2}), where (Gamma _1, Gamma _2,) and (Gamma _3) are the first, second and third logarithmic coefficients of inverse functions belonging to the class (mathcal {S}) of normalized univalent functions. In this article, we establish sharp inequalities (|H_{2,1}(F_{f^{-1}}/2)|le 1/4), (|H_{2,1}(F_{f^{-1}}/2)| le 1/36), (|T_{2,1}(F_{f^{-1}}/2)|le 5/16) and (|T_{2,1}(F_{f^{-1}}/2)|le 145/2304) for the logarithmic coefficients of inverse functions for the classes of starlike functions and convex functions with respect to symmetric points. The results show an invariance property of the second Hankel determinants (H_{2,1}(F_{f}/2)) and (H_{2,1}(F_{f^{-1}}/2)) of logarithmic coefficients for the classes (mathcal {S}^*_S) and (mathcal {K}_S). Moreover, we exhibit examples showing that the strict inequality in the main results hold.</div>","PeriodicalId":600,"journal":{"name":"Iranian Journal of Science and Technology, Transactions A: Science","volume":"49 1","pages":"243 - 252"},"PeriodicalIF":1.4,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On a Class of p(z)-Biharmonic Kirchhoff Type Problems with Indefinite Weight and No-Flow Boundary Condition

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2024-09-27 DOI: 10.1007/s40995-024-01694-w

Mouad Allalou, Mohamed El Ouaarabi, Abderrahmane Raji

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Evolution of Fluid System at the Chahfirouzeh Porphyry Cu Deposit, Kerman Cenozoic Magmatic arc, Iran 伊朗克尔曼新生代岩浆弧 Chahfirouzeh 斑岩铜矿床流体系统的演变

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2024-09-26 DOI: 10.1007/s40995-024-01699-5

Tayebeh Ramezani, Sina Asadi, Johar Ali

{"title":"Evolution of Fluid System at the Chahfirouzeh Porphyry Cu Deposit, Kerman Cenozoic Magmatic arc, Iran","authors":"Tayebeh Ramezani, Sina Asadi, Johar Ali","doi":"10.1007/s40995-024-01699-5","DOIUrl":"10.1007/s40995-024-01699-5","url":null,"abstract":"<div>The Chahfirouzeh porphyry copper deposit is situated within the Kerman Cenozoic magmatic arc and forms part of the Urumieh–Dokhtar magmatic belt in southern Iran. Copper mineralization in the deposit is associated to a Miocene diorite/granodiorite stock. The ore–forming process can be categorized into early, main, and late stages. Based on the microthermometry results, the salinities of the fluid system evolved from 5.86 to 16.15 wt% NaCl equivalent in the early stage, through bimodal ranges of 2.4–12.2 and 30.39–42.56 wt% NaCl equivalent in the main stage, and to 8.14–23 wt% NaCl equivalent in the late stage, strongly suggesting that fluid boiling and CO2 escape occurred during the main stage of the Chahfirouzeh porphyry system. Furthermore, the total homogenization temperatures of fluid inclusions decrease from 327 to 492 °C during the early, to 313–458 °C during the main, and finally to 250–377 °C during the late events. Laser Raman results also show the presence of CO2 and CH4 in the main stage fluid inclusion, which may be due to an equilibrium between them linked to the transition from potassic to phyllic alteration. We propose that the phase separation and release of CO2 could be crucial for enhancing the activities of NaCl and S2− in the fluids, reducing the oxidation of the fluids, and leading to the deposition of metal sulfides and the entrapment of halite–bearing inclusions in the Chahfirouzeh hydrothermal system.</div>","PeriodicalId":600,"journal":{"name":"Iranian Journal of Science and Technology, Transactions A: Science","volume":"48 6","pages":"1453 - 1461"},"PeriodicalIF":1.4,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142524433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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A comprehensive Approach of Caputo Space Fractional Bioheat Model During Hyperthermia Based on Fractional Chebyshev Collocation Scheme

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2024-09-24 DOI: 10.1007/s40995-024-01705-w

Vijay Saw, Shashi Kant

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Impact of Harvesting Intervention and Additional Food on Natural Enemy-Pest Dynamics in Agro-ecosystem

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2024-09-24 DOI: 10.1007/s40995-024-01709-6

Deepak Tripathi, Anuraj Singh

{"title":"Impact of Harvesting Intervention and Additional Food on Natural Enemy-Pest Dynamics in Agro-ecosystem","authors":"Deepak Tripathi, Anuraj Singh","doi":"10.1007/s40995-024-01709-6","DOIUrl":"10.1007/s40995-024-01709-6","url":null,"abstract":"<div>The present study investigates the dynamics of natural enemy (predator)-pest (prey) interactions in an agroecosystem. It focuses on the impacts of providing additional food to natural enemies and harvesting intervention on pest populations. A thorough mathematical and numerical analysis is performed to explore various existing equilibria as trivial, natural enemy free and species coexistence. The assessments also explore the emergence of different bifurcations such as saddle-node, transcritical, and Hopf bifurcation. The effct of harvesting rate and additional food on pests and natural enemy populations are highlighted through numerical simulations. The findings indicate that the system’s multiple equilibria, their stability, and various bifurcations are outcomes of changes in harvesting rates and the availability of additional food. This work offers theoretical insights into biological control initiatives, highlighting specific critical values for imposed harvesting. It also suggests optimal strategies for supplying additional food to effectively manage pest populations. This work concludes that making an arbitrary choice of additional food and harvesting could yield entirely contrary outcomes, potentially resulting in an escalation of pest concentrations and the elimination of the natural enemy.</div>","PeriodicalId":600,"journal":{"name":"Iranian Journal of Science and Technology, Transactions A: Science","volume":"49 1","pages":"209 - 223"},"PeriodicalIF":1.4,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of Spatial Association of Mineralization and Faults Through Fry and Fractal Modelling in Anarak Metallogenic Zone, Iran

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2024-09-24 DOI: 10.1007/s40995-024-01708-7

Mohammad Sharifi, Mohammad Ali Rajabzadeh, Alexander L. Peace

{"title":"Analysis of Spatial Association of Mineralization and Faults Through Fry and Fractal Modelling in Anarak Metallogenic Zone, Iran","authors":"Mohammad Sharifi, Mohammad Ali Rajabzadeh, Alexander L. Peace","doi":"10.1007/s40995-024-01708-7","DOIUrl":"10.1007/s40995-024-01708-7","url":null,"abstract":"<div>The Anarak Metallogenic Zone is located in the western part of the Central East Iranian Microcontinent. Paleozoic ultramafic ophiolite and metamorphic complexes are the most common rocks in the Anarak region. Sedimentary and volcanic rocks of the Cretaceous and Eocene age cover the Paleozoic rocks. The polymetallic mineralization of the Anarak is often in related to the listvenitization of ultramafic rocks. These hydrothermal deposits are structurally controlled by basement faults. Rose diagrams and Fry analysis of structural data show an E-W trend in the distribution of faults and mineralization in the region. Analysis of the aeromagnetic data characterizes a west-east and northwest-southeast trend for deep faults that control the boundary of the Paleozoic intrusive and ultramafic rocks. The fusion of the multifractal technique and the lineament factor map identified high-potential zones of hydrothermal polymetallic mineralization in the Anarak region. Fieldwork demonstrates a clear relation between the W-E fault zones and the occurrence of polymetallic deposits in the region. The major faults trending west-east, especially the basement faults, play an important role in the distribution of polymetallic deposits in the Anarak region. In addition to their role as conduits for hydrothermal fluids, these faults were crucial in the emplacement of various host rocks, such as ultramafic and intrusive rocks. This study indicates that the combination of multifractal techniques with lineament factor map processing is an inexpensive and effective method of locating high-potential hydrothermal polymetallic mineralization zones, particularly deposits associated with listvenitization.</div>","PeriodicalId":600,"journal":{"name":"Iranian Journal of Science and Technology, Transactions A: Science","volume":"49 1","pages":"65 - 77"},"PeriodicalIF":1.4,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Dielectric, Ferroelectric, and Energy Storage Properties of Solvent Casted P(VDF-TrFE) Film 溶剂浇铸 P（VDF-TrFE）薄膜的介电、铁电和储能特性

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2024-09-24 DOI: 10.1007/s40995-024-01711-y

S. Parthasarathy, S. Behera, Srikanta Moharana

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Regarding a Novel Subclass of Harmonic Multivalent Functions Defined by Higher-Order Differential Inequality 关于由高阶微分不等式定义的谐波多价函数的一个新子类

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2024-09-24 DOI: 10.1007/s40995-024-01697-7

Serkan Çakmak

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Analysis of Bulk Arrival Recurrent Queue with Active and Passive Breakdowns 带主动和被动故障的批量到达循环队列分析

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2024-09-24 DOI: 10.1007/s40995-024-01673-1

Shweta Upadhyaya, Radhika Agarwal, Divya Agarwal

{"title":"Analysis of Bulk Arrival Recurrent Queue with Active and Passive Breakdowns","authors":"Shweta Upadhyaya, Radhika Agarwal, Divya Agarwal","doi":"10.1007/s40995-024-01673-1","DOIUrl":"10.1007/s40995-024-01673-1","url":null,"abstract":"<div>This study investigates the (M^X/G/1) queue with retrials and an optional service facility for the one who opts for it. Here the service provider may follow Bernoulli vacation schedule. If the server is occupied, the clients are forced to join the virtual orbit from where they retry for their primary essential service or secondary optional service . The service provider is subjected to either active breakdown when occupied or passive breakdown when unoccupied. Depending on their types of breakdown, they are subjected to either immediate or delayed repair, respectively. After each service, depending on the server’s choice, it may either go on a Bernoulli vacation or may serve the next client. Implementing the embedded Markov chain technique, the system’s ergodic condition is established. Also, the steady state solution for various queueing parameters is obtained using the generating functions defined for the queue length distribution. The consequences of different parameters on the performance measures have been illustrated numerically. Further to develop a low cost model, formulation of the cost function is done and the impact of sensitive parameters on the overall cost of the system is studied. The optimization of the cost function using a soft computing technique, Artificial Bee Colony is also discussed which makes the system cost effective.</div>","PeriodicalId":600,"journal":{"name":"Iranian Journal of Science and Technology, Transactions A: Science","volume":"48 6","pages":"1473 - 1487"},"PeriodicalIF":1.4,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142524370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Systematic Affinity of Verbena supina (Verbenaceae), a New Species to the Flora of Iran, Along with Infrageneric Classifications of the Genus 伊朗植物新种 Verbena supina（马鞭草科）的系统亲缘关系以及该属的非属分类

IF 1.4 4区综合性期刊

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2024-09-24 DOI: 10.1007/s40995-024-01714-9

Atena Eslami-Farouji, Ahmad Reza Khosravi

{"title":"Systematic Affinity of Verbena supina (Verbenaceae), a New Species to the Flora of Iran, Along with Infrageneric Classifications of the Genus","authors":"Atena Eslami-Farouji, Ahmad Reza Khosravi","doi":"10.1007/s40995-024-01714-9","DOIUrl":"10.1007/s40995-024-01714-9","url":null,"abstract":"<div>Recent evaluation of herbarium specimens in central regions of Fars province led to the introduction of a plant new to the Iranian flora. This novel specimen is introduced as the third distinct species of the genus Verbena named V. supina (Verbenaceae), and a detailed morphological description and illustration of Iranian specimen are provided herein. The genetic affinity of V. supina and allied species were also determined for the first time using nuclear ribosomal DNA genetic marker, and the validity of traditional infrageneric sub-classifications were critically examined. An identification key together with ecological information and the distribution area of this plant within the country, are also discussed. Based on this study, studied Verbena species were grouped into two main clades with distinct geographical dispersion, and the old-world V. supina, is found to be genetically similar to V. officinalis. Morphologically, V. supina and V. officinalis are distinct in terms of seed micro-structure, life form, leaf margin and inflorescence trichome type. The credibility and the monophyly of traditional infrageneric sub-classifications were not validated due to homoplastic characters. Likewise, derived traits such as autapomorphic and synapomorphic were critically determined.</div>","PeriodicalId":600,"journal":{"name":"Iranian Journal of Science and Technology, Transactions A: Science","volume":"48 6","pages":"1383 - 1395"},"PeriodicalIF":1.4,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142524371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0