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May 15, 2026Open    Access

A Preliminary Study on the Establishment of the Dongjiang Rations Bureau

Letian Shen,Yuhan Wang
As a key military financial management body during the late Ming dynasty, the Dongjiang Rations Bureau’s administrative mechanisms hold significant importance for the study of the military financial system during the transition from the Ming to the Qing dynasty. By examining historical documents, this paper explores the background and reasons for the establishment of the Dongjiang Rations Bureau, as well as its organisational structure and evolution, with the aim of revealing the characteristics...
Open Access Library J.   Vol.13, 2026
Doi:10.4236/oalib.1115322


May 15, 2026Open    Access

Research on the Impact of Cross-Border E-Commerce Pilot Zones on Green Total Factor Productivity

Yuchuan Jin
In recent years, the cross-border e-commerce comprehensive pilot zone policy has been continuously promoted, and the scale has been continuously expanded, which has played an important role in China’s economic development. Based on literature research, theoretical exposition and empirical testing, this paper constructs a research framework to study the relationship between the establishment of cross-border e-commerce comprehensive pilot zones and urban Green Total Factor Productivity (GTFP). Thi...
Open Access Library J.   Vol.13, 2026
Doi:10.4236/oalib.1115237


May 15, 2026Open    Access

Exploring the State of Digital Records Preservation in Botswana’s Public Sector

Nna Motlhasedi
The digital records preservation strategies used by public sector organisations in Botswana were evaluated in this study. Owing to technological advancements and the government of Botswana’s e-government initiative, the production of digital records has become inevitable. Consequently, the public sector should implement effective records management practices, including the preservation of digital records, to guarantee the accessibility of records in the long term. The purpose of this study was t...
Open Access Library J.   Vol.13, 2026
Doi:10.4236/oalib.1114856


May 14, 2026Open    Access

The Origin of the Story of Ancient Greek Mathematician Thales Transporting Salt with Mules

Weiqiang Niu
This article explores the origin of the story of ancient Greek mathematician Thales transporting salt with mules. Through the investigation of Thales in historical works on mathematics, it was found that British historian of mathematics James Gow might first introduce this tale in A Short History of Greek Mathematics in 1884. Gow argued that the story originated from Plutarch or Aristotle, but such claims have not been accepted by Western historians of mathematics. American mathematician Howard ...
Open Access Library J.   Vol.13, 2026
Doi:10.4236/oalib.1115376


May 13, 2026Open    Access

Development and Validation of a Practical Color Vision Screening Method Using Common Materials Color

Angelea Perez
Purpose: Color Vision Deficiency (CVD) can interfere with educational performance and occupational participation; however, efficient school-based screening tools remain limited. This study evaluated four low-cost color vision screening tests against the Hardy-Rand-Rittler (HRR) Pseudoisochromatic Plates for detecting red-green CVD. Methods: Forty-nine adults (35 normal, 14 CVD; 18 - 59 years) completed HRR plates, crayon, color-board, paint-chip classification, and a psychophysical red-increment...
Open Access Library J.   Vol.13, 2026
Doi:10.4236/oalib.1115257


May 13, 2026Open    Access

Design and Evaluation of a Solar Campus Model for Energy Efficiency and Environmental Sustainability

Ender Antonio I?iguez,Michaele Karina Abreu
The transition to clean energy sources has been recognized as essential for mitigating climate change, and higher education institutions (HEIs) play a key role in promoting regional sustainability. In this context, the UCATECI Solar Campus Project represented a strategic initiative aimed at reducing the carbon footprint within the Dominican education sector. The objective of this study was to describe the implementation of the UCATECI Solar Campus photovoltaic system and evaluate its initial imp...
Open Access Library J.   Vol.13, 2026
Doi:10.4236/oalib.1115272


May 13, 2026Open    Access

Lower-Limb Muscle Synergy Characteristics during Sprinting in Front-Side Swing-Dominant and Back-Side Propulsion-Dominant Sprinters

Sujing Su,Houwei Zhu,Xiaodong Li
Purpose: This study aimed to examine differences in lower-limb muscle synergy characteristics during sprinting between front-side swing-dominant and back-side propulsion-dominant sprinters, and to elucidate the neuromuscular control features underlying distinct lower-limb technical strategies. Methods: Eight male sprinters with systematic training backgrounds were recruited and classified as front-side swing-dominant or back-side propulsion-dominant according to the front-side/back-side action r...
Open Access Library J.   Vol.13, 2026
Doi:10.4236/oalib.1115427


May 12, 2026Open    Access

The Impact of Peer Review Editing on Grade Eight English Language Arts Students Writing

Marshalee L. Laing
This action research project investigates the impact of a peer review editing intervention on the writing skills of eight grade students in a Jamaican high school. Using a mixed-methods approach, the study collected quantitative data via pre- and post-tests and qualitative data through questionnaires, observations, and journals. The findings reveal a contradiction: while qualitative data indicate students felt the intervention was beneficial and improved their confidence, the quantitative data s...
Open Access Library J.   Vol.13, 2026
Doi:10.4236/oalib.1115324


May 08, 2026Open    Access

Research on Innovative Practice and Improvement Strategies of Government Purchasing Services in the Patriotic Health Movement in the New Era

Hanjia Li,Danni Qian
Objective: To summarize the practice experience of government purchase services in the patriotic health movement in my country, and analyze the deficiencies of the new era, with the aim of providing reference. Methods: The relevant experience of domestic and foreign government purchases public health services will be analyzed through the literature search, policies and regulations. Results: The system supply, purchase range and operational mechanism of government purchase services are improved. ...
Open Access Library J.   Vol.13, 2026
Doi:10.4236/oalib.1115344


May 07, 2026Open    Access

Spectrophotometric Evaluation of Color Matching between Acrylic Resin-Based Artificial Teeth and Conventional Shade Guides: An in Vitro Comparative Study

Nouhaila Mazzir,Ichraq Benazouz,Boutaina Maftouh,El Mehdi Jouhadi
Introduction: Accurate shade selection is essential for achieving aesthetic harmony in prosthetic restorations. However, discrepancies often arise when matching commercial prosthetic teeth with standardized shade guides. This study aimed to evaluate the chromatic compatibility between commercially available prosthetic teeth and two types of shade guides: the conventional Vita Classic? and manufacturer-specific shade guides. Methods: An in vitro comparative study was conducted on 13 brands of pro...
Open Access Library J.   Vol.13, 2026
Doi:10.4236/oalib.1115209


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