scholarly journals A Literature Review of Drone-Based Package Delivery Logistics Systems and Their Implementation Feasibility

2021 ◽  
Vol 14 (1) ◽  
pp. 360
Author(s):  
Taha Benarbia ◽  
Kyandoghere Kyamakya
Keyword(s):  
Delivery Systems ◽  
Promising Alternative ◽  
Logistics Industry ◽  
Research Issues ◽  
Customer Expectations ◽  
Logistics Systems ◽  
Package Delivery ◽  
Delivery Options ◽  
World Organization ◽  
New Research

In recent years, e-commerce businesses have seen an increase in the daily volume of packages to be delivered, as well as an increase in the number of particularly demanding customer expectations. In this respect, the delivery mechanism became prohibitively expensive, particularly for the final kilometer. To stay competitive and meet the increased demand, businesses began to look for innovative autonomous delivery options for the last mile, such as autonomous unmanned aerial vehicles/drones, which are a promising alternative for the logistics industry. Following the success of drones in surveillance and remote sensing, drone delivery systems have begun to emerge as a new solution to reduce delivery costs and delivery time. In the coming years, autonomous drone sharing systems will be an unavoidable logistical solution, especially with the new laws/recommendations introduced by the Flight World Organization on how to organize the operations of these special unmanned airline systems. This paper provides a comprehensive literature survey on a set of relevant research issues and highlights the representative solutions and concepts that have been proposed thus far in the design and modeling of the logistics of drone delivery systems, with the purpose of discussing the respective performance levels reached by the various suggested approaches. Furthermore, the paper also investigates the central problems to be addressed and briefly discusses and outlines a series of interesting new research avenues of relevance for drone-based package delivery systems.

Efficient Schedule of Energy-Constrained UAV Using Crowdsourced Buses in Last-Mile Parcel Delivery

2021 ◽  
Vol 5 (1) ◽  
pp. 1-23
Author(s):  
Yan Pan ◽  
Shining Li ◽  
Qianwu Chen ◽  
Nan Zhang ◽  
Tao Cheng ◽  
...  
Keyword(s):  
Traffic Congestion ◽  
Large Scale ◽  
Load Capacity ◽  
Scheduling Algorithm ◽  
Cost Effective ◽  
Promising Alternative ◽  
Logistics Industry ◽  
Last Mile ◽  
Delivery Scheduling ◽  
Schedule Approach

Stimulated by the dramatical service demand in the logistics industry, logistics trucks employed in last-mile parcel delivery bring critical public concerns, such as heavy cost burden, traffic congestion and air pollution. Unmanned Aerial Vehicles (UAVs) are a promising alternative tool in last-mile delivery, which is however limited by insufficient flight range and load capacity. This paper presents an innovative energy-limited logistics UAV schedule approach using crowdsourced buses. Specifically, when one UAV delivers a parcel, it first lands on a crowdsourced social bus to parcel destination, gets recharged by the wireless recharger deployed on the bus, and then flies from the bus to the parcel destination. This novel approach not only increases the delivery range and load capacity of battery-limited UAVs, but is also much more cost-effective and environment-friendly than traditional methods. New challenges therefore emerge as the buses with spatiotemporal mobility become the bottleneck during delivery. By landing on buses, an Energy-Neutral Flight Principle and a delivery scheduling algorithm are proposed for the UAVs. Using the Energy-Neutral Flight Principle, each UAV can plan a flying path without depleting energy given buses with uncertain velocities. Besides, the delivery scheduling algorithm optimizes the delivery time and number of delivered parcels given warehouse location, logistics UAVs, parcel locations and buses. Comprehensive evaluations using a large-scale bus dataset demonstrate the superiority of the innovative logistics UAV schedule approach.

Research Approaches in Computer-Supported Collaborative Learning

2013 ◽  
Vol 9 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Tharrenos Bratitsis ◽  
Stavros Demetriadis
Keyword(s):  
Collaborative Learning ◽  
Research Field ◽  
Computer Supported Collaborative Learning ◽  
Research Issues ◽  
Online Distance Education ◽  
Theoretical Perspectives ◽  
History Of ◽  
How People Learn ◽  
Online Distance ◽  
New Research

Computer Supported Collaborative Learning (CSCL) is concerned with how people learn when working and interacting in groups with the assistance of ICTs. The field involves collaboration, computer mediation, online – distance education which raises interesting theoretical considerations regarding the actual studying of learning within CSCL settings. Being a rather interdisciplinary research field in nature, it has a long history of controversy about its theory, methods, and definition. In this editorial, through a quick review of the literature the diversity of issues examined under the CSCL research field becomes obvious. Moreover, an attempt to categorize these research issues is made. In this vein, the four interesting contributions of this Special Issue, regarding theoretical perspectives and issues of research of the field, are introduced. They comply with the distinguished categories, but they open new research borders as well.

scholarly journals Marketing technologies of customer relationship management: digital ecosystems

2022 ◽  
pp. 31-38
Author(s):  
G. V. Butkovskayakaya ◽  
E. V. Sumarokova
Keyword(s):  
Customer Relationship Management ◽  
Success Factors ◽  
Relationship Management ◽  
Customer Relationship ◽  
Digital Environment ◽  
Research Issues ◽  
Digital Ecosystems ◽  
Customer Expectations ◽  
Key Success Factors ◽  
Research Findings

Digital technologies are changing customer expectations and reshaping the boundaries of industry markets forming ecosystems. At the same time, ecosystems are built on customer needs and go beyond a simple partnership between players from different industries to bring together digitally available services or products, providing an end-to-end experience for consumers. The article summarises research findings in the field of digital marketing and digital ecosystems. Theoretical and research issues of changes in marketing techniques for customer relationship management in the digital environment have been reviewed. The experience of the world’s leading ecosystems has been systematised, the main archetypes of digital ecosystems and key success factors have been highlighted. 

Different Approaches to Economic and Social Changes: New Research Issues, Sources and Results

2022 ◽  
Keyword(s):  
Social History ◽  
Working Group ◽  
Hungarian Academy ◽  
Research Network ◽  
Research Issues ◽  
History Of ◽  
Regional Committee ◽  
New Research ◽  
High Level ◽  
Academy Of Sciences

This series was launched in 2021 by the Working Group of Economic and Social History of the Pécs Regional Committee of the Hungarian Academy of Sciences to present research conducted within its framework. The foreign language edition is meant to be a contribution to the internationalization of research made in Hungary. The Working Group has made every effort since the publication of the first two volumes to allow its members, and also their Ph.D. students, to publish their findings more easily and in larger volume, providing at the same time an opportunity for other professionals in the region of South Transdanubia to publish their researches. The majority of the studies in this book, similarly to the first volume of the series, are about the history of the region, but some of the papers go beyond this theme. The diversity of the papers created an inspiring environment for the authors, which in turn has greatly stimulated the already existing professional cooperation among them. Both the editors and the authors find it very important to popularise the economic and social history of the region as broadly as possible, in line with the ambitions of the Pécs Regional Committee of the Hungarian Academy of Sciences. In addition, this book also promotes the cooperation among generations of researchers; it is not only the young that enjoy the support of their senior colleagues but the ideas and momentum of the younger generation also keep the activity of the Working Group at a high level. It is due to the well-functioning generational discussions, among other things, that several young researchers earned their Ph.D. degree in 2021. The framework of the studies in the broader sense is the economic and social history of Hungary and Europe in the 18th – 20th centuries. The papers in this volume also provide information about the development and current phases of the different pieces of research. Several papers are sequels to publications released in 2021 from a chronological or thematic aspect, however the book contains brand new topics as well. Great significance is attributed to the fact that several renowned international members of the research network of the Working Group were also persuaded to publish. The results of some ongoing Ph.D. research are also presented. The high number of young authors is a proof that the professional interest in economic and social history is not decreasing at all. We do hope that this book will contribute to the maintenance of this trend.

A Survey of Distance Education Challenges and Technologies

2007 ◽  
pp. 1-26 ◽  
Author(s):  
Timothy K. Shih ◽  
Jason C. Hung ◽  
Jianhua Ma ◽  
Qun Jin
Keyword(s):  
Distance Education ◽  
Information Technologies ◽  
Computer Hardware ◽  
Communication Tools ◽  
Virtual University ◽  
Research Issues ◽  
Educational Professionals ◽  
Academic Researchers ◽  
E Learning ◽  
New Research

Distance education, e-learning, and virtual university are similar terms for a trend of modern education. It is an integration of information technologies, computer hardware systems, and communication tools to support educational professionals in remote teaching. This chapter presents an overview of distance education from the perspective of policy, people, and technology. A number of questions frequently asked in distance learning panel discussions are presented, with the suggested answers from the authors. The survey presented in this chapter includes communication, intelligent, and educational technologies of distance education. Readers of this chapter are academic researchers and engineers who are interested in new research issues of distance education, as well as educators and general participants who are seeking for new solutions.

scholarly journals Development of polycationic amphiphilic cyclodextrin nanoparticles for anticancer drug delivery

2017 ◽  
Vol 8 ◽  
pp. 1457-1468 ◽  
Author(s):  
Gamze Varan ◽  
Juan M Benito ◽  
Carmen Ortiz Mellet ◽  
Erem Bilensoy
Keyword(s):  
Drug Delivery ◽  
Cell Line ◽  
Anticancer Drug ◽  
Drug Delivery Systems ◽  
Drug Carrier ◽  
Delivery Systems ◽  
Loading Capacity ◽  
Promising Alternative ◽  
Cytotoxicity Studies ◽  
Amphiphilic Cyclodextrin

Background: Paclitaxel is a potent anticancer drug that is effective against a wide spectrum of cancers. To overcome its bioavailability problems arising from very poor aqueous solubility and tendency to recrystallize upon dilution, paclitaxel is commercially formulated with co-solvents such as Cremophor EL® that are known to cause serious side effects during chemotherapy. Amphiphilic cyclodextrins are favored oligosaccharides as drug delivery systems for anticancer drugs, having the ability to spontaneously form nanoparticles without surfactant or co-solvents. In the past few years, polycationic, amphiphilic cyclodextrins were introduced as effective agents for gene delivery in the form of nanoplexes. In this study, the potential of polycationic, amphiphilic cyclodextrin nanoparticles were evaluated in comparison to non-ionic amphiphilic cyclodextrins and core–shell type cyclodextrin nanoparticles for paclitaxel delivery to breast tumors. Pre-formulation studies were used as a basis for selecting the suitable organic solvent and surfactant concentration for the novel polycationic cyclodextrin nanoparticles. The nanoparticles were then extensively characterized with particle size distribution, polydispersity index, zeta potential, drug loading capacity, in vitro release profiles and cytotoxicity studies. Results: Paclitaxel-loaded cyclodextrin nanoparticles were obtained in the diameter range of 80−125 nm (depending on the nature of the cyclodextrin derivative) where the smallest diameter nanoparticles were obtained with polycationic (PC) βCDC6. A strong positive charge also helped to increase the loading capacity of the nanoparticles with paclitaxel up to 60%. Interestingly, cyclodextrin nanoparticles were able to stabilize paclitaxel in aqueous solution for 30 days. All blank cyclodextrin nanoparticles were demonstrated to be non-cytotoxic against L929 mouse fibroblast cell line. In addition, paclitaxel-loaded nanoparticles have a significant anticancer effect against MCF-7 human breast cancer cell line as compared with a paclitaxel solution in DMSO. Conclusion: According to the results of this study, both amphiphilic cyclodextrin derivatives provide suitable nanometer-sized drug delivery systems for safe and efficient intravenous paclitaxel delivery for chemotherapy. In the light of these studies, it can be said that amphiphilic cyclodextrin nanoparticles of different surface charge can be considered as a promising alternative for self-assembled nanometer-sized drug carrier systems for safe and efficient chemotherapy.

scholarly journals Comparison of Traditional and Ultrasound-Enhanced Electrospinning in Fabricating Nanofibrous Drug Delivery Systems

Pharmaceutics ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 495 ◽  
Author(s):  
Hakkarainen ◽  
Kõrkjas ◽  
Laidmäe ◽  
Lust ◽  
Semjonov ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Biomedical Applications ◽  
Drug Delivery Systems ◽  
Fiber Diameter ◽  
Pulse Repetition Frequency ◽  
Reference Method ◽  
Delivery Systems ◽  
Water Soluble ◽  
Aqueous Acetic Acid ◽  
Promising Alternative

We investigated nozzleless ultrasound-enhanced electrospinning (USES) as means to generate nanofibrous drug delivery systems (DDSs) for pharmaceutical and biomedical applications. Traditional electrospinning (TES) equipped with a conventional spinneret was used as a reference method. High-molecular polyethylene oxide (PEO) and chitosan were used as carrier polymers and theophylline anhydrate as a water-soluble model drug. The nanofibers were electrospun with the diluted mixture (7:3) of aqueous acetic acid (90% v/v) and formic acid solution (90% v/v) (with a total solid content of 3% w/v). The fiber diameter and morphology of the nanofibrous DDSs were modulated by varying ultrasonic parameters in the USES process (i.e., frequency, pulse repetition frequency and cycles per pulse). We found that the USES technology produced nanofibers with higher fiber diameter (402 ± 127 nm) than TES (77 ± 21 nm). An increase of a burst count in USES increased the fiber diameter (555 ± 265 nm) and the variation in fiber size. The slight-to-moderate changes in a solid state (crystallinity) were detected when compared the nanofibers generated by TES and USES. In conclusion, USES provides a promising alternative for aqueous-based fabrication of nanofibrous DDSs for pharmaceutical and biomedical applications.

Competitive dynamics: Eastern roots, Western growth

2016 ◽  
Vol 23 (4) ◽  
pp. 510-530 ◽  
Author(s):  
Ming-Jer Chen
Keyword(s):  
Social Sciences ◽  
Chinese Philosophy ◽  
Competitive Dynamics ◽  
Future Research ◽  
Eastern Philosophy ◽  
Competitive Strategies ◽  
Research Issues ◽  
Content Type ◽  
Cooperative Relationships ◽  
New Research

Purpose The purpose of this paper is to bridge the understanding of apparent dichotomies such as East and West, philosophy and social sciences, and antiquity and modernity, and to continue the vibrant expansion of competitive dynamics study into the realm of East-West theoretical fusion. Design/methodology/approach The author looks to classical Chinese philosophy to discover the origins and nature of competitive dynamics. The paper develops the premise that the foundational thrusts of this contemporary Western management topic spring from ancient Eastern conceptions of duality, relativity, and time. Findings Research inroads are made along two paths. First, the paper traces the theoretical and philosophical underpinnings of competitive dynamics to Eastern thinking. Then by bridging what have customarily been perceived as fundamentally different paradigms, it reveals, in a new light, empirical findings in this strategy subfield. Research limitations/implications Linking Western management science, and specifically the study of competitive dynamics, to classical Eastern philosophy raises new research questions in the areas of international management and management education as well as competitive dynamics. In the latter, the paper suggests opportunities for exploring connections between traditional Chinese concepts and contemporary organizational and competition research issues, including competitive and cooperative relationships at the industry level. Future research may also investigate the fundamental differences and similarities between Eastern and Western philosophies, and their implications for competitive strategies. Originality/value From a relatively obscure corner of business academia, competitive dynamics now occupies a distinct place in strategic management research and is a topic of intense interest to scholars in a variety of disciplines. The usual view is that competitive dynamics fits squarely in the spectrum of social sciences, an organically home-grown area of Western study. This paper examines the topic from a distinctly different angle – through the lens of ancient Eastern philosophy – to discern deeper a deeper meaning and wider application.

The Present Situation and Developing Trends of Hot Closed-Die Forging

2015 ◽  
Vol 1094 ◽  
pp. 365-368
Author(s):  
Qi Liu ◽  
Xu Guang ◽  
Shi Xuan Sun
Keyword(s):  
Machine Building ◽  
Production Costs ◽  
Research Issues ◽  
Slowing Down ◽  
Research Fields ◽  
Precision Forging ◽  
Die Forging ◽  
Closed Die Forging ◽  
New Ideas ◽  
New Research

Due to its advantages including high quality of the forging parts and low production costs,hot closed-die forging (HCDF) play an essential role in the machine building industry. However, in recent decades, the pace of its development is gradually slowing down. In the hope of drawing up some new ideas about future development of the HCDF, this paper presents a brief overview of it. This study roughly prospects several potential research issues of the HCDF. Some new research fields such as precision forging, combined forging and numerical simulation have been shown. Challenges and possible response to them have been discussed.

Sign in / Sign up

Export Citation Format

Share Document