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Consensus Analysts Target Price and Stock Price Returns in Nigeria 尼日利亚的一致分析师目标价和股票价格回报率
Pub Date : 2024-04-13 DOI: 10.14738/abr.124.16680
Efe Allwell Omoduemuke, P. Ogbebor, Esther Lawal
This study focuses on the effect of an Investment Valuation technique (Consensus Analysts Target Price) on Stock Price Return of listed companies in the Nigerian Exchange between the period of 2011 and 2023. The ex-post facto research design was employed in this research due to the use of historic (secondary) data from the selected fifteen (15) companies across 3 major sectors on the Nigeria Exchange (NGX). Panel autoregressive distribution lag model was the estimation techniques and inference made on 5% significance level. Prior to the data analysis, a number or pre-estimation test were carried out such as co-integration, homogeneity, and cross-sectional dependence in addition to basis correlation and descriptive analysis.  Findings from the short run reveals a significant negative coefficient (-0.273) for lagged Stock Price Return (L.STR), indicating a substantial short-term correction effect. Conversely, the lagged Consensus Analyst Target Price (L.CATP) shows a positive coefficient (0.141) without statistical significance, suggesting a modest positive relationship without an immediate impact on Stock Price Return. Transitioning to the long run, the highly significant negative coefficient (-1.273) for long-run Stock Price Return (lr_STR) emphasizes a robust and persistent negative adjustment effect. Over an extended period, Consensus Analyst Target Price (lr_CATP) introduces a marginally significant positive coefficient (0.077), implying a modest positive impact on Stock Price Return. Based on the results, one recommendation concerning Consensus Analyst Target Price (CATP) and Stock Price Return is to exercise caution in relying solely on CATP for short-term decision-making. Investors should be aware that, in the short term, deviations from the lagged return may not be significantly influenced by CATP. Therefore, considering additional factors or indicators alongside CATP could enhance the accuracy of short-term decision-making in understanding stock price movements.
本研究的重点是投资估值技术(共识分析师目标价)在 2011 年至 2023 年期间对尼日利亚交易所上市公司股价回报率的影响。由于使用了尼日利亚交易所(NGX)3 个主要行业 15 家选定公司的历史(二手)数据,本研究采用了事后研究设计。面板自回归分布滞后模型是估算技术,推论的显著性水平为 5%。在数据分析之前,除了基础相关性和描述性分析之外,还进行了一些预估测试,如协整、同质性和横截面依赖性。 短期研究结果显示,滞后股价回报率(L.STR)的系数(-0.273)为显著负值,表明短期修正效应很大。相反,滞后的一致分析师目标价(L.CATP)显示出正系数(0.141),但无统计意义,表明两者之间存在适度的正相关关系,但不会对股价回报率产生直接影响。从长期来看,长期股价回报率(lr_STR)的负系数(-1.273)非常显著,强调了稳健而持续的负调整效应。在较长时期内,一致分析师目标价(lr_CATP)引入了一个略微显著的正系数(0.077),意味着对股价回报率有一定的积极影响。基于上述结果,有关分析师共识目标价(CATP)和股价回报率的一项建议是,在短期决策中仅依赖分析师共识目标价应谨慎行事。投资者应该意识到,在短期内,CATP 对滞后回报率的偏差可能影响不大。因此,在考虑 CATP 的同时考虑其他因素或指标,可提高短期决策在理解股价走势方面的准确性。
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引用次数: 0
Demographic Differences in Emotional Impact of COVID-19 Pandemic and Country Lockdown: A Cross-sectional Survey of Household Members in Ebonyi State, Nigeria COVID-19 大流行和国家封锁对情绪影响的人口统计学差异:尼日利亚埃邦伊州家庭成员横断面调查
Pub Date : 2024-04-05 DOI: 10.14738/abr.123.16666
P. Ngwakwe, Margret Ndidiamaka Anugwo, Nwamaka A Elom, James Ekuma Ogbu, R. Ojide, D. N. Alegu, Christian Ikechukwu Ogah, I. O. Nwimo
COVID-19 pandemic and country lockdown could negatively impact on the emotions of several household members. Using cross-sectional the study investigated demographic differences on emotional impact of COVID-19 pandemic and country lockdown of 392 household members. The instrument (α = 0.73) used for data collection was a 15-item structured emotional impact of COVID-19 lockdown questionnaire (IMC-19LQ). Data collected were analyzed using means, standard deviations, ANOVA and t-tests. Results showed all age groups suffered high emotional impact of COVID-19 pandemic and country lockdown; participants of all levels of education suffered high emotional impact of the lockdown. Farmers and artisans suffered higher impact of the pandemic lockdown than others. Both married and singles reported high emotional impact of the lockdown. ANOVA and t-test revealed no significant differences in the emotional impact of the lockdown among participants in relation to age, level of education and marital status (p > 0.05) but a significant difference existed in relation to occupation (p < 0.05). Collaboration of health educators, social and clinical psychologists through seminars and workshops may be used to achieve promotion of psychological wellbeing of household members.
COVID-19 大流行和国家封锁会对一些家庭成员的情绪产生负面影响。本研究采用横断面方法调查了 392 名家庭成员在 COVID-19 大流行和国家封锁对情绪影响方面的人口统计学差异。用于收集数据的工具(α = 0.73)是一份包含 15 个项目的 COVID-19 封锁对情绪影响的结构化问卷(IMC-19LQ)。收集到的数据采用均值、标准差、方差分析和 t 检验进行分析。结果显示,所有年龄组的参与者都受到了 COVID-19 大流行和国家封锁的严重情绪影响;所有教育程度的参与者都受到了封锁的严重情绪影响。农民和手工业者受到大流行病封锁的影响高于其他人。已婚者和单身者都表示封锁造成的情绪影响较大。方差分析和 t 检验表明,参加者在封锁对情绪的影响方面与年龄、教育程度和婚姻状况没有显著差异(p > 0.05),但与职业有显著差异(p < 0.05)。健康教育工作者、社会和临床心理学家可通过研讨会和工作坊进行合作,以促进家庭成员的心理健康。
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引用次数: 0
A Study of Employee Digital Supply Chain Skill Needs and Business School Executive Education Program Coverage of These Skills 员工数字供应链技能需求及商学院高管教育课程对这些技能的覆盖研究
Pub Date : 2024-04-05 DOI: 10.14738/abr.123.16752
Abbas Foroughi
Digital technologies are being widely adopted to bring visibility and efficiency to supply chains, but employees often lack the technology skills needed to use them effectively. This situation presents significant opportunities for business school executive education programs to access new pools of students and remain relevant as a source of employee technology training, even as they face stiff competition from a myriad of online training providers. This study examined business school executive education websites to determine the extent to which they are meeting the digital supply chain training needs of corporate employees. Findings indicate that, although employee format preferences for short, online, customized, flexible courses have been built into executive education programs, a number of critical digital supply chain topics are covered by only a few business school programs or not at all.  
数字技术被广泛采用,为供应链带来了可视性和效率,但员工往往缺乏有效使用这些技术所需的技术技能。这种情况为商学院的高管教育项目提供了重要机会,使其能够获得新的生源,并在面临众多在线培训提供商的激烈竞争时,仍能保持作为员工技术培训来源的相关性。本研究考察了商学院高管教育网站,以确定这些网站在多大程度上满足了企业员工的数字供应链培训需求。研究结果表明,尽管员工对短期、在线、定制、灵活的课程形式的偏好已经融入到了高管教育项目中,但只有少数商学院的项目涵盖了一些关键的数字供应链主题,甚至根本没有。
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引用次数: 0
The “Villas de Sesimbra” Aparthotel and The Importance of Training Low-Skilled Workers 塞辛布拉别墅 "公寓式酒店和培训低技能工人的重要性
Pub Date : 2024-04-05 DOI: 10.14738/abr.123.16729
A. Lopes, F. Romana
This case study describes the complex process of qualifying accommodation employees at the “Villas de Sesimbra” aparthotel, in the context of an organizational change and the development of a prismatic structural configuration that favours leadership and management by teams, an organization who learns. This is, effectively, a case study of management and employee satisfaction based on the consolidation of the strategic “pillar”, par excellence, of People Management, constituted by “continuous and qualifying professional training, in practice” (Lopes, 2012), in relation to all 12-hotel staff (permanent and seasonal). By proceeding in this way, the hierarchical pyramid is considerably reduced, and may even nullify the tradition of maintaining indefinitely the organization of work based on low-skilled workers. As a result, it could evolve into project management. The qualification of these workers was assumed to be strategic by the administration, which also accepted a re-elaboration of the structure (from hierarchical centralization to evolving into a “prismatic” structure that would allow for success based on “project management”). Training would follow the “ANEFA” model, of on-the-job learning, according to the four skills considered as core (project - Saber+): (i) literacy (knowing more); (ii) citizenship (participation in business life); (iii) numeracy (mathematics for life); (iv) technology (judicious use of ICTs). The workers wrote their manual personalized work on the topic of “accommodation management”. Organizational reconversion increased management autonomy, with a dynamic focus on the events and company meetings market, while the effectiveness and productivity of accommodation workers increased, with them being hired as permanent workers and transferred to situation of multi-purpose employees, capable of serving tables and supporting breakfast services. Organizational change, developed as a function of resolving a single initial problem (Kotter, 1995; Weick and Quinn, 1999), in fact involved the entire structure and led it to a stage of organizational learning (Senge, 1990).
本案例研究描述了 "Villas de Sesimbra "公寓式酒店在组织变革和发展多棱镜结构配置的背景下,对住宿员工进行资格认证的复杂过程。这实际上是一项关于管理和员工满意度的案例研究,其基础是巩固人员管理这一卓越的战略 "支柱",由 "在实践中持续开展合格的专业培训"(洛佩斯,2012 年)构成,涉及酒店的所有 12 名员工(长期和季节性员工)。通过这种方式,金字塔式的等级制度被大大缩减,甚至可能废除无限期维持以低技能工人为基础的工作组织的传统。因此,它可以演变为项目管理。行政管理部门认为这些工人的资格具有战略意义,并同意对结构进行重新设计(从 等级集中到演变为 "棱柱 "结构,从而在 "项目管理 "的基础上取得成功)。培训将遵循在职学习的 "ANEFA "模式,按照被视为核心的四种技能(项目--Saber+)进行:(i) 识字(了解更多知识);(ii) 公民意识(参与企业生活);(iii) 算术(生活数学);(iv) 技术(合理使用信息和通信技术)。工人们以 "住宿管理 "为主题撰写了他们的个性化工作手册。组织结构调整提高了管理层的自主权,使其更加关注活动和公司会议市场,同时提高了住宿工作人员的效率和生产率,他们被聘为长期工,并转为多功能员工,能够为餐桌服务和支持早餐服务。组织变革是为了解决最初的一个问题(Kotter,1995 年;Weick 和 Quinn,1999 年),但实际上涉及到整个组织结构,并使其进入了组织学习阶段(Senge,1990 年)。
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引用次数: 0
Tax Certification and Tax Compliance in the South West, Nigeria 尼日利亚西南部的税务认证和税务合规情况
Pub Date : 2024-04-05 DOI: 10.14738/abr.124.16302
M. Alade, Modupe Salami
Purpose: Despite the efforts of Federal and State governments in Nigeria to employ administrative tools to improve tax compliance, the nation is still being bedeviled with the issue of low tax compliance, leading to the inability of the government to finance their statutory responsibilities due to the paucity of funds. Therefore, this study investigated the effects of tax certification on tax compliance in South-west Nigeria. Design/methodology/approach: A survey research design was opted for to obtain primary data from a sample size of 400 participants drawn from a population of 1,194 using Slovin’s formula and purposive sampling technique. Both descriptive and influential statistics were performed. Partial Least Square (PLS) regression was used to analyze the data. Findings: The results show that tax certification (β = 0.261; p-value = 0.044) has a positive effect on tax compliance in South-West Nigeria, which is statistically significant at 0.05 level. Based on these findings, the study concluded that tax certification is an essential tax compliance tool in South West, Nigeria. Research limitations/implications: The results imply that improved efforts in issuing tax certificates tied to public services will enhance taxpayers’ compliance with tax regulations. However, the study is not exhaustive as it specifically focused on a tax enforcement tool in a developing economy. Practical implications: It is therefore recommended that all obstacles around issuance of tax certificates, especially in developing economies, should be surmounted by the government through its tax authority. Originality/value: The study is unique in its approach and population by considering tax officers within South West states in Nigeria.
目的:尽管尼日利亚联邦政府和州政府努力采用行政手段来提高纳税遵从度,但国家仍然受到纳税遵从度低问题的困扰,导致政府因资金短缺而无法履行其法定职责。因此,本研究调查了税务认证对尼日利亚西南部税收遵从度的影响。设计/方法/途径:本研究采用调查研究设计,使用斯洛文公式和目的性抽样技术,从 1,194 人中抽取 400 人作为样本,从中获取原始数据。研究采用了描述性统计和影响性统计。数据分析采用了偏最小二乘法(PLS)回归法。研究结果结果显示,税务认证(β = 0.261;P 值 = 0.044)对尼日利亚西南部地区的纳税遵从度有积极影响,在 0.05 的水平上具有统计学意义。基于这些发现,研究得出结论,税务认证是尼日利亚西南部地区税收遵从的重要工具。研究局限性/影响:研究结果表明,改进与公共服务挂钩的纳税证明发放工作将提高纳税人对税收法规的遵从度。不过,这项研究并不详尽,因为它特别关注的是一个发展中经济体的税收执法工具。实际意义:因此,建议政府应通过税务机关克服所有与开具纳税证明有关的障碍,尤其是在发展中经济体。独创性/价值:本研究通过对尼日利亚西南各州税务官员的研究,在研究方法和研究对象上都是独一无二的。
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引用次数: 0
Provider Exclusion in US Private Health Insurance Contract 美国私人医疗保险合同中的医疗服务提供者除外条款
Pub Date : 2024-04-05 DOI: 10.14738/abr.124.16773
Michael M Costello
Two national newspaper articles published in the Fall of 2018 addressed the issue of private health insurance provider contracts that act to exclude specific health systems from health plan networks. Inevitably, the question arises: Are such agreements illegal restraints of trade actionable under federal and state antitrust laws? A long-standing tenet of antifrust law is that it exists to protect competition not competitors. Excluding providers may be a legitimate outgrowth of the contracting process and therefore legal. However, an examination of the contracting process may reveal anticompetitive intent to restrain trade. The specific facts surrounding provider exclusion must be analyzed carefully in an effort to determine if there is illegal restraint of trade.
2018 年秋季,全国性报纸发表了两篇文章,探讨了私人医疗保险提供商合同将特定医疗系统排除在医疗计划网络之外的问题。问题不可避免地产生了:根据联邦和各州的反垄断法,此类协议是否属于非法限制贸易行为?反垄断法的一个长期信条是,它的存在是为了保护竞争而不是竞争对手。将提供商排除在外可能是缔约过程的合法产物,因此是合法的。然而,对签约过程的审查可能会发现限制贸易的反竞争意图。必须仔细分析与排除医疗服务提供者有关的具体事实,以确定是否存在非法限制贸易的行为。
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引用次数: 0
The Effects of Increasing the Full Retirement Age from 66 to 67 on the Retirement Decision at the Early Retirement Age of 62 将完全退休年龄从 66 岁提高到 67 岁对 62 岁提前退休决定的影响
Pub Date : 2024-04-05 DOI: 10.14738/abr.124.16774
Chong-Hwan Son
In the United States, the full retirement age increases in two-month increments each year until reaching 67 years of age in 2027 for individuals born from 1955 to 1960. The increase in the full retirement age is equivalent to a decline in the Social Security benefits for all new retirees. If the full retirement age is increased from 66 to 67 while the early retirement age remains at 62, then the monthly benefit reduction at age 62 would increase from 25% to 30%. Despite the reduction in Social Security benefits, a significant portion of newly retired workers claim their Social Security benefits as soon as they turn 62, which is the earliest age to claim the benefit. The Social Security Administration predicts that the reduction in Social Security benefits can encourage workers to delay their retirement and that the reduction can restore some financial balance to the Social Security system. Therefore, studying the effects of increasing the full retirement age from 66 to 67 on the retirement decision at 62 is essential for planning future social security reforms. This study conducts a Two-Stage Least Squares (2SLS) regression, using cross-sectional and time series data from the Behavioral Risk Factor Surveillance System (BRFSS) from 2016 to 2021. The empirical results show that the probability of retirement for individuals at age 62 decreased from 2016 to 2021, indicating a trend of delaying retirement as their full retirement age rises. During the same period, the likelihood of men reporting being retired decreases by 35.56%, while for women, it drops by 16.79%. It implies that if male and female workers choose to exit the workforce solely based on the Social Security benefits, the increase in full retirement age appears to have a more significant impact on delaying retirement decisions for male workers than for female workers.
在美国,1955 年至 1960 年出生的人的完全退休年龄每年递增两个月,直到 2027 年达到 67 岁。完全退休年龄的提高相当于所有新退休人员的社会保障福利下降。如果完全退休年龄从 66 周岁提高到 67 周岁,而提前退休年龄仍为 62 周岁,那么 62 周岁时的每月福利减少额将从 25% 增加到 30%。尽管社会保障福利有所减少,但仍有相当一部分新退休工人在年满 62 岁(这是申领福利的最早年龄)后立即申领社会保障福利。社会保障管理局预测,社会保障福利金的减少可以鼓励工人推迟退休,而且减少福利金可以在一定程度上恢复社会保障体系的财政平衡。因此,研究将完全退休年龄从 66 岁提高到 67 岁对 62 岁退休决定的影响对于规划未来的社会保障改革至关重要。本研究利用 2016 年至 2021 年行为风险因素监测系统(BRFSS)的横截面数据和时间序列数据,进行了两阶段最小二乘法(2SLS)回归。实证结果显示,从 2016 年到 2021 年,62 岁的人退休的概率有所下降,这表明随着完全退休年龄的提高,人们有推迟退休的趋势。同期,男性报告退休的概率下降了 35.56%,而女性则下降了 16.79%。这意味着,如果男性和女性劳动者选择退出劳动力市场的唯一依据是社会保障福利,那么完全退休年龄的提高对男性劳动者延迟退休决定的影响似乎比对女性劳动者的影响更大。
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引用次数: 0
Securing Artificial Intelligence Models: A Comprehensive Cybersecurity Approach 确保人工智能模型的安全:全面的网络安全方法
Pub Date : 2024-04-05 DOI: 10.14738/abr.123.16770
Adedeji Olugboja
As artificial intelligence (AI) becomes integral to diverse applications, the imperative to secure AI models against evolving threats has gained paramount importance. This paper presents a novel cybersecurity framework tailored explicitly for AI models, synthesizing insights from a comprehensive literature review, real-world case studies, and practical implementation strategies. Drawing from seminal works on adversarial attacks, data privacy, and secure deployment practices, the framework addresses vulnerabilities throughout the AI development lifecycle. Preliminary results indicate a significant enhancement in the resilience of AI models, demonstrating reduced success rates of adversarial attacks, effective data encryption, and robust secure deployment practices. The framework's adaptability across diverse use cases underscores its practicality. These findings mark a crucial step toward establishing comprehensive and practical cybersecurity measures, contributing to the ongoing discourse on securing the expanding field of artificial intelligence. Ongoing efforts involve further validation, optimization, and exploration of additional security measures to fortify AI models in an ever-changing threat landscape.
随着人工智能(AI)在各种应用中变得不可或缺,确保人工智能模型免受不断变化的威胁变得至关重要。本文综合了全面的文献综述、现实世界案例研究和实际实施策略,提出了一个专门为人工智能模型量身定制的新型网络安全框架。该框架借鉴了对抗性攻击、数据隐私和安全部署实践方面的开创性著作,解决了整个人工智能开发生命周期中的漏洞问题。初步结果表明,人工智能模型的复原力显著增强,表明对抗性攻击的成功率降低,数据加密有效,安全部署实践稳健。该框架在各种使用案例中的适应性凸显了其实用性。这些发现标志着向建立全面、实用的网络安全措施迈出了关键一步,为正在进行的有关确保不断扩大的人工智能领域安全的讨论做出了贡献。目前正在进行的工作包括进一步验证、优化和探索更多安全措施,以便在不断变化的威胁环境中强化人工智能模型。
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引用次数: 0
Financial Inclusion, Per Capita Income and Human Development: Evidence from African Countries 金融包容性、人均收入与人类发展:非洲国家的证据
Pub Date : 2024-03-19 DOI: 10.14738/abr.123.16235
Paul Mani, Winnie Nyamute, Herick O Ondigo
There is a growing consensus that financial inclusion is essential for economic growth and human development. Studies have shown that financial inclusion can lead to increased investment, productivity, and employment. It can also help to reduce poverty and inequality. A country’s prevailing macro-economic factors such as per capita is also thought to accelerate or slow down the effect of financial inclusion on human development.  This study assessed the effect of per capita income on the relationship between financial inclusion and human development among African countries. To achieve the research objectives, the study employed a panel longitudinal research design that involved collecting secondary data for the period between 2011 and 2020 on an annual basis for each of the 54 African countries. Findings indicate that financial inclusion, measured by bank branches, ATMs, deposit accounts, and loan accounts, has a positive and significant effect on human development in African countries. Furthermore, per capita income was found to moderate the relationship between financial inclusion and human development. The study concludes that fostering financial inclusion and enhancing per capita income is crucial for promoting human development in African countries. The study emphasizes the need for policymakers to prioritize inclusive finance and implement targeted interventions to address the specific challenges and opportunities within each context.
人们越来越一致地认为,金融包容性对于经济增长和人类发展至关重要。研究表明,普惠金融可以增加投资、生产力和就业。它还有助于减少贫困和不平等。一个国家当前的宏观经济因素(如人均)也被认为会加速或减缓普惠金融对人类发展的影响。 本研究评估了人均收入对非洲国家普惠金融与人类发展之间关系的影响。为实现研究目标,本研究采用了面板纵向研究设计,每年收集 54 个非洲国家中每个国家在 2011 年至 2020 年期间的二手数据。研究结果表明,以银行网点、自动取款机、存款账户和贷款账户衡量的金融包容性对非洲国家的人类发展具有积极而显著的影响。此外,研究还发现人均收入对金融包容性与人类发展之间的关系具有调节作用。研究得出结论,促进金融包容性和提高人均收入对于促进非洲国家的人类发展至关重要。研究强调,决策者需要优先考虑普惠金融,并实施有针对性的干预措施,以应对各种情况下的具体挑战和机遇。
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引用次数: 0
The Customer Perspective on Food Delivery Applications: Insights from Saudi Arabia 客户对食品配送应用的看法:沙特阿拉伯的启示
Pub Date : 2024-03-19 DOI: 10.14738/abr.123.16683
Fahad Alofan
In today’s technology-driven era, online platforms and applications have revolutionized various services, including food delivery and offering unparalleled convenience and efficiency. This surge in popularity of digital solutions is driven by consumers' growing technological dependency and their quest for seamless experiences. Consequently, more restaurants outsource delivery services to meet evolving consumer preferences. This study provides business operators with valuable insights into consumer preferences and behaviors regarding online food delivery applications. Specifically, it identifies the determinants influencing the adoption of such apps and explores the most popular apps among the Saudi subpopulation. Additionally, this study investigated the factors associated with the actual usage of online food delivery services. An analysis of the collected data revealed critical factors shaping consumer choices in food delivery services, notably the impact of social media reputation and advertisements. The proximity of restaurants has emerged as a significant determinant, profoundly influencing customer satisfaction and app preferences. Interestingly, while cost did not significantly drive consumers towards online food delivery services, the Jahez app stood out as the preferred choice because of its exemplary customer service. The findings of this study offer valuable insights for informed strategic decision-making within the food delivery ecosystem. Moreover, recommendations for future research are provided to foster a deeper understanding of and innovation in the online food delivery domain.
在当今技术驱动的时代,在线平台和应用程序彻底改变了包括食品配送在内的各种服务,为人们提供了无与伦比的便利和效率。消费者对技术的依赖和对无缝体验的追求,推动了数字化解决方案的普及。因此,越来越多的餐馆外包送餐服务,以满足消费者不断变化的偏好。本研究为企业经营者提供了有关消费者对在线食品配送应用的偏好和行为的宝贵见解。具体来说,它确定了影响此类应用程序采用的决定因素,并探讨了在沙特亚人群中最受欢迎的应用程序。此外,本研究还调查了与实际使用在线食品配送服务相关的因素。对收集到的数据进行分析后发现了影响消费者选择食品配送服务的关键因素,特别是社交媒体声誉和广告的影响。餐厅距离的远近成为一个重要的决定因素,深刻影响着顾客的满意度和应用偏好。有趣的是,虽然成本并没有明显地驱使消费者选择在线送餐服务,但 Jahez 应用程序却因其堪称典范的客户服务而成为首选。本研究的结果为食品配送生态系统中的明智战略决策提供了宝贵的见解。此外,还为今后的研究提出了建议,以促进对在线食品配送领域的深入了解和创新。
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引用次数: 0
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Archives of business research
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