Digital Commons Network^™

Journal Of Food Law & Policy -Spring 2026, Journal Editors

Journal of Food Law & Policy

No abstract provided.

Balancing Dual Roles: Instructional Leadership And Daily Management Among School Principals In The United Arab Emirates, Mohammad Abdelkarim Al Adwan

Thesis/ Dissertation Defenses

School principals in the United Arab Emirates (UAE) face increasing pressure to serve simultaneously as instructional leaders, guiding curriculum innovation, mentoring teachers, and fostering professional growth and as operational managers responsible for budgeting, staffing, and daily administration. While global and regional research has highlighted this duality, a gap persists in understanding how UAE principals themselves perceive and navigate these competing demands. This qualitative collective case study purposively sampled 12 principals from private and international schools. Data were collected through semistructured interviews, a focus group with seven middle leaders, and documentary review. Using reflexive thematic analysis, the study provides in-depth insights …

Exploring The Experiences And Challenges Of Librarians In Cataloguing Academic Resources In Public University Libraries In The Volta Region Of Ghana, Hawa Osman Dr, Joana Dango Mrs., Hannatu Abue Kugblenu-Mahama Dr

Library Philosophy and Practice (e-journal)

Purpose: This study explored the experiences of librarians involved in cataloguing academic resources and examined the challenges they face in public university libraries in the Volta Region of Ghana.

Methods: A qualitative research approach was adopted to gain in-depth insights into librarians’ lived experiences. The study was conducted at the University of Health and Allied Sciences (UHAS) Library and Ho Technical University (HTU) Library. A total of 30 participants were selected using purposive sampling, guided by Yamane’s formula for sample size determination. Data were collected through semi-structured face-to-face interviews and analyzed using thematic analysis with NVivo software. Ethical standards, including …

Supersymmetric Quantum Fields Via Quantum Probability, Radhakrishnan Balu

Journal of Stochastic Analysis

The super version of imprimitivity theorem is available now to describe global supersymmetry of systems using the representations of super Lie groups (SLG). This result uses the equivalence between super Harish- Chandra pairs and super Lie groups, at the categorical level, and is applicable to super Poincaré group and generalizes a smooth SI to super context. We apply the result to build supersymmetric quantum fields. Towards this end, we set up a super Fock space of a disjoint union of super Hilbert spaces which is equivalent to super tensoring of boson (even) part symmetrically and that of fermion (odd) part …

Convergence To Fractional Brownian Motion For Weighted Random Sums In Besov Space, Ibrahima Mendy

Journal of Stochastic Analysis

We consider infinite sums of weighted i.i.d. random variables, with finite variance and arbitrary distribution, and we derives conditions for the weak convergence in Besov space of normalized sums to fractional Brownian motion (fBm).

Pricing Variance Swaps Using Extended Heston Model, Semere Gebresilasie, Mulue Gebreslasie, Indranil Sengupta

Journal of Stochastic Analysis

Abstract. In this study, we introduce a variance swap for the underlying asset utilizing the Heston model, incorporating a long-term variance that is treated as a stochastic function of time. We develop a closed-form solution for the variance swap under this framework, where the log returns are driven by a compound Poisson process. Our analysis of historical data reveals that long-term variance is not constant; instead, it fluctuates over time, reflecting market dynamics more accurately. By integrating this time-varying long-term variance into the model, we achieve an improvement in prediction performance of approximately 60%. Furthermore, we perform model calibration using …

An Analysis Of Public Library Services For The Tribal Community In Rayalaseema Region With A Special Reference To Healthcare And Hygiene, P Ramu Naik, V. K. Dhanyasree

Library Philosophy and Practice (e-journal)

Public libraries have long been recognised as critical societal institutions, serving as information, education, and community engagement centres. In the context of tribal communities, their role in disseminating health information is particularly significant. Tribal populations often face unique health challenges and disparities, making access to accurate and reliable health information vital to their well-being. This study examines the pivotal role that public libraries play in disseminating health information to tribal people. The study is conducted among 13 branch libraries in the tribal areas of Rayalaseema region. A structured questionnaire was used for the survey. The results show that even though …

The Effect Of Ellagic Acid Isolated From Maclura Pomifera Fruit On The Staling Dynamics During The Storage Of Bread Products, Suvonqul S. Ravshanov, Anvar M. Normatov, Sarvinoz B. Nazarova, Sirojiddin Kh. Sadullayev, GuliraʼNo S. Bosimova

CHEMISTRY AND CHEMICAL ENGINEERING

This article investigates the effect of ellagic acid isolated from Maclura pomifera fruit on the staling dynamics during the storage of bread products. The study aimed to determine the effectiveness of ellagic acid's antioxidant and antimicrobial properties in preserving the microbiological stability and technological quality of bread. Experiments were conducted on bread samples with ellagic acid added at concentrations of 0.05% and other levels. The results showed a slowdown in the staling process, as indicated by moisture content, water retention, shrinkage, and penetrometric measurements. Specifically, at a concentration of 0.05%, ellagic acid helped to maintain the softness and elasticity of …

Patterns Of Alcolysis Of Secondary Polyethylene Terephthalate With Diethylene Glycol, Juraev B. Juraev, Murafar G. Alimuhamedov, Ravshan I. Adilov, Bobir B. Aykhodjaev, Olga S. Kukurina

CHEMISTRY AND CHEMICAL ENGINEERING

The aim of this work was to study the process of alcoholysis of recycled polyethylene terephthalate with diethylene glycol, as well as the structure and physicochemical properties of the final product. IR and PMR spectroscopy were used to study the structure and identify the structure of the products of RPET alcoholysis with diethylene glycol. As a result of  studies of the alcoholysis of polyethylene terephthalate-containing waste with diethylene glycol, a wide range of hydroxyl-containing oligoesters was synthesized. The possibility of changing their physicochemical properties by adjusting the process parameters was demonstrated. This makes it possible to synthesize hydroxyl-containing oligoesters with …

Photocatalysts Based On Titanium Dioxide And Zinc Phthalocyanine Composites For Photodegradation Of Methylene Blue, Albert R. Koldarov, Mastura Kh. Aripova, Odilzhon E. Abdurakhmonov, Zuhra Ch. Kadirova, Abror O. Tashpulatov

CHEMISTRY AND CHEMICAL ENGINEERING

The aim of this work is to analyze the photocatalytic degradation of a model methylene blue solution using titanium dioxide composites with zinc phthalocyanine as the sensitizing photocatalyst under sunlight. The objects of the study are TiO₂-based photocatalysts derived from the spent catalyst of the Shurtan GCC after heat treatment at 650°C (T-650), as well as a composite containing zinc phthalocyanine (T-650/PcZn). It has been established that the photodegradation reaction follows a pseudo-first-order model, while the rate constant for the TiO₂/PcZn composite is significantly higher than that of pure TiO₂, indicating greater efficiency. The …

Synthesis And Infrared-Spectroscopic Study Of Complexes Of Selected 3d-Metals With 2-(2-Pyridyl)-Benzimidazole, Farangiz A. Khujayeva, Hakima A. Alikulova, Shahzoda G. Allamurodova, Mushtariybonu M. Sunnatillayeva, Shahlo Sh. Daminova

CHEMISTRY AND CHEMICAL ENGINEERING

The aim of this study was to synthesize and systematically investigate the coordination compounds of several 3d metals with 2-(2-pyridyl)benzimidazole (2-PBI) using infrared (IR) spectroscopy. Complexes of copper(II), nickel(II), and cobalt(II) with the general formula [M(2-PBI)3](ClO₄)₂were successfully synthesized. Based on the analysis of the IR spectra, it was established that the 2-PBI ligand coordinates to the metal ion in a bidentate manner through the nitrogen atoms of the benzimidazole and pyridyl rings. The shifts of the ν(C=N) and ν(C–N) stretching vibration bands, as well as the appearance of new bands in the 623–485 cm⁻№ region corresponding to ν(M–N) and vibrations, …

Production Of Organo-Mineral Fertilizing Ameliorants Based On Phosphogypsum, Central Kyzylkum Phosphorites And Biohumus, Temur A. Ospanov, Axmed M. Reymov, Rashid K. Kurbaniyazov, Jaxanger M. Bisenbaev

CHEMISTRY AND CHEMICAL ENGINEERING

Phosphogypsum, a large-scale industrial by-product generated during phosphoric acid production, poses significant environmental challenges due to its accumulation and potential ecological impact. This study investigates the utilization of phosphogypsum as a raw material for producing fertilizing ameliorants in combination with Central Kyzylkum phosphorites and biohumus. Composite mixtures were prepared and granulated using a 30% ammonium sulfate solution as a binding agent. The chemical composition, phase structure (XRD), and microstructure (SEM–EDS) of the obtained materials were analyzed. The results demonstrate the formation of calcium phosphate and sulfate phases, including CaHPO4·2H2O, β-Ca3(PO4)2, and CaSO4·2H2O, which contribute to both fast- and slow-release nutrient …

Processing Of Wc–Co Waste With Selective Extraction Of Co3o4 By Oxidative Fusion In Nano3 Melt, Ilyos A. Bozorov, Aziz B. Ibragimov, Odiljon E. Abdurakhmonov, Mastura Kh. Aripova, Sherzod E. Abdurakhmonov

CHEMISTRY AND CHEMICAL ENGINEERING

The aim of this study was to develop and experimentally validate a selective method for producing high-purity cobalt oxide from WC–Co hard alloy waste using oxidative fusion in a sodium nitrate (NaNO₃) melt, followed by combined aqueous and acidic purification of the solid residue. Cemented carbide scrap and waste containing 6–12 wt.% Co were used as feedstock, without prior grinding. It was found that, during heat treatment in the range of 650–900 °C, tungsten predominantly converts into soluble sodium tungstates, while cobalt concentrates in the solid residue as an oxide phase. Optimal process conditions, such as 850°C and …

Temperature-Dependent Electrocatalytic Activity Of Mxene For Hydrogen Evolution Reaction., Javlonbek I. Mamanazirov, Shavkat I. Mamatkulov

CHEMISTRY AND CHEMICAL ENGINEERING

This study represents the synthesis technology of MXene catalyst for hydrogen evolution reaction (HER) and investigates the temperature-dependent electrocatalytic activity of MXene-based catalysts in alkaline media. Using a three-electrode configuration in 1M KOH, the electrochemical performance was systematically evaluated across a temperature range of 25 °C to 40 °C. Linear sweep voltammetry (LSV) results demonstrate a significant enhancement in catalytic efficiency at elevated temperatures, evidenced by a consistent shift in polarization curves toward lower potentials. Specifically, the overpotential required to achieve a current density of 10 mA/cmІ decreased from 257 mV at 25 °C to 203 mV at 40°C, marking …

Features Of Formation Of The Structure And Properties Nonfritted Glazes For Sanitary Ceramic Products, Ivan A. Levitskii, Mihail V. Dyadenko, Valery G. Luhin

CHEMISTRY AND CHEMICAL ENGINEERING

The results of research on the formation of nonfritted glass-ceramic coatings for sanitary ceramic products are presented. The synthesis was carried out in a multicomponent raw material mixture including pegmatite, chalk, quartz sand with a constant content of zirconium silicate, talc, wollastonite, zinc whitewash, refractory clay and kaolin. Glazes were obtained by single firing at a temperature of 1200±5 °C for a duration of 20 hours. Samples of coatings were obtained, the processes of glaze formation were studied, the fusibility of glazes was assessed, and their physico-chemical properties were studied in relation to the features of the formation of the …

Fiber-Optic Products Based On Borosilicate Glasses, Mihail V. Dyadenko

CHEMISTRY AND CHEMICAL ENGINEERING

The research results of the development of glass compositions for a light-guiding core, reflective and protective coats of optical fiber using a stack method are presented. The optimal ratio of glass-forming oxides and modifications in their compositions has been determined, which ensures the resistance of glasses to crystallization during the manufacture of optical fiber, its thermomechanical strength, the required geometry of optical fibers and the light transmission of fiber-optic products, amounting to 60–75%.

The influence of the chemical composition of the glasses of the light-guiding core and the light-reflecting coats on their refractive index, which determines the magnitude of the …

Synthesis Of Nanostructured Yttrium Oxide Luminescent Powders Activated By Terbium Ions, Eygeniy N. Poddenezhny, Andrei A. Boiko, Olga S. Nevzorova, Ekaterina E. Trusova, Vladimir S. Urbanovich

CHEMISTRY AND CHEMICAL ENGINEERING

The aim of this work is to synthesize nanostructured luminescent powders of yttrium oxide doped with terbium ions. Y₂О₃:Tb³⁺ powders were obtained by thermochemical synthesis (combustion). The sources for the synthesis were nitric acid salts of yttrium and terbium. Organic acids, citric acid and acetic acid, were used as reducing agents and combustible components. It has been established that large porous aggregates with sizes up to 200 microns are formed with citric acid during combustion, and nanostructured finely dispersed powders consisting of nanocrystalline particles with sizes of 39±5 nm are formed with …

الفائدة, إدمون نديم شماس

Proche-Orient, Études juridiques

No abstract provided.

La Compétence Internationale Des Juridictions Dans Les Litiges Nés De Contrats Administratifs Internationaux, Rita Waked

Proche-Orient, Études juridiques

No abstract provided.

Le Régime Juridique De La Tacite Reconduction En Droit Libanais, Krystel El Hajj

Proche-Orient, Études juridiques

No abstract provided.

L'Impérativité Face À La Liberté De Créer Toutes Actions Dans Les Sociétés Anonymes, Joséphine Hage-Chahine

Proche-Orient, Études juridiques

No abstract provided.

La Position Contractuelle Sur Les Marchés Financiers, Gisèle Zouein

Proche-Orient, Études juridiques

No abstract provided.

الإجتهاد اللبناني, Poej

Proche-Orient, Études juridiques

No abstract provided.

Le Droit Au Travail Dans Les Pays Du Moyen-Orient, Georges Kadige

Proche-Orient, Études juridiques

No abstract provided.

La Résolution Des Conflits Positifs De Nationalités En Droit International Privé Libanais, Lina Charbel

Proche-Orient, Études juridiques

No abstract provided.

Les Actions De Préférence Émises Par Les Banques Libanaises, Aline Tanielian

Proche-Orient, Études juridiques

No abstract provided.

Le Rôle Du Juge Constitutionnel Libanais Dans La Sauvegarde Des Droits Processuels Fondamentaux, Salim Jreissati

Proche-Orient, Études juridiques

No abstract provided.

فهرس هجائي وتحليلي للمقالات الحقوقيّة : فهرس هجائي وتحليلي للعناوين - الشرق الأدنى، دراسات في القانون ١٩٦٤-٢٠١٠, Nada Corbani Akl, Abla Abi Nader

Proche-Orient, Études juridiques

No abstract provided.

فهرس هجائي وتحليلي للمقالات الحقوقيّة : فهرس هجائي وتحليلي للمؤلفين - الشرق الأدنى، دراسات في القانون ١٩٦٤-٢٠١٠, Nada Corbani Akl, Abla Abi Nader

Proche-Orient, Études juridiques

No abstract provided.

فهرس هجائي وتحليلي للمقالات الحقوقيّة : فهرس هجائي وتحليلي للمواضيع - الشرق الأدنى، دراسات في القانون ١٩٦٤-٢٠١٠, Nada Corbani Akl, Abla Abi Nader

Proche-Orient, Études juridiques

No abstract provided.