The Role of Certificates and Labels for Cocoa in the Face of Climate Change: A Scientific Review

Climate change threatens cocoa quality, raising concerns regarding sustainable premium cocoa production. Evaluating the effectiveness of certification standards is imperative to address this concern effectively. A multi-stage method was employed for a systematic review of 39 peer-reviewed articles to highlight the impacts of climate change on the biophysical environment of cocoa and its implications for adapting Geographical Indications (GIs). Additionally, a comprehensive review was conducted on climate-relevant standards of certificates in Ecuador, Indonesia, and Ghana. The findings of this study provide practical insights into possible difficulties that cocoa-producing countries may encounter in maintaining the distinctive flavours and quality trademarks of cocoa in the face of changing climate. Moreover, the findings emphasize the need for producer countries to prioritize viable adaptation and product differentiation strategies that meet sustainable marketing standards to protect GIs or place-based intellectual property. Furthermore, the findings indicate certificates require effective multi-level climate change management and environmental-social-governance principles that promote scientifically proven mitigation strategies, such as increasing soil organic carbon, zero deforestation, and reducing emissions while striving to leverage local adaptation policies to reduce location-specific vulnerability. Finally, certificates can accelerate the expansion, intensification, and redistribution of sustainable production for gains that outweigh the inconveniences caused by climate change.

Blockchain-Based Certificate Authentication System with Enabling Correction

Blockchain has proven to be an emerging technology in the digital world, changing the way everyone thinks about data security and bringing efficiency to several industries. It has already been applied to a wide range of applications, from financial services and supply chain management to voting systems and identity verification. An organization must verify its candidates before selecting them. Choosing an unqualified candidate can ruin an organization’s reputation. In this paper, a blockchain-based academic certificate authentication system will be used to ensure authenticity and make the assertion of the decentralized system secure. However, the system will generate, authenticate and make corrections on academic certificates. Ultimately, some blockchain-based authentication systems already exist, they can’t correct any errors that occur during generation. A blockchain-based certificate authentication system was built using blockchain technology. Where admin could generate, authenticate and correct the certificate if necessary. The admin can also check how many times a certificate has been modified. Other users can only check the authenticity of the certificates. We’re using two blockchains to enable corrections. Blockchain technology can successfully implement a certificate authentication system. This system will eliminate doubts about the authenticity of certificates, provide fast responses, and ensure reliable and secure storage. The proposed system will help in many ways, such as providing a user-friendly university admission, and smooth job hiring process, etc. In conclusion, our proposed system can permanently eradicate certificate forgeries and create and promote trust in society.

Discussion on the Integration of“Post,Course,Competition,Certificate”:Taking the Internet of Things Application Technology Courses in Higher Vocational Colleges as an Example

This article explores the development of the Internet of Things(IoT)application technology course in higher vocational colleges under the background of“post,course,competition,certificate.”It first emphasizes the importance of IoT talent training and course construction in higher vocational colleges and deeply analyzes the core concept of“post,course,competition,certificate”integration.In view of the problems faced in the course construction of IoT application technology in higher vocational colleges and the practical experience of Tianjin Vocational College of Mechanics and Electricity,the implementation strategy of the course construction of IoT application technology in higher vocational colleges is elaborated in detail based on the integrated concept of“post,course,competition,certificate.”

The Model of“Post,Course,Competition,Certificate”Integrated Education for Electronic Information Engineering Technology Major in Higher Vocational Colleges

The core education function of higher vocational colleges is to train technical talents with high quality,so as to meet the needs of talents in the development stage of our society.Under the guidance of talent training,higher vocational colleges need to pay attention to establishing an all-round and three-dimensional education model,and promote innovation of higher vocational education on the basis of this.It is also a way to promote the innovation of higher vocational education to vigorously promote the construction of“post,course,competition,certificate”mode in the construction of education mode.Through the construction of“post,course,competition,certificate”mode,the education mode of higher vocational colleges is gradually improved,so as to strengthen the effectiveness of talent training in higher vocational colleges.Therefore,in this paper,the author puts forward some suggestions to promote the construction of the integrated education mode of the electronic information engineering technology major in higher vocational colleges,so as to help improve the talent training level of higher vocational colleges.

A Probe into the Talent Training Mode of Vocational Colleges with"l+X"Certificate System based on Credit Bank

Based on credit bank,the"1+X"certificate system is a"flyover"for learners to interchange between the academic and vocational education.It is a significant innovation to promote high-quality vocational education development and enhance the influence of national vocational education.Vocational colleges can implement"1+X"certificate system via the credit bank and in turn,the popularization of the"1+X"certificate system would enrich and improve the former.China's development of the credit bank and the existing research on the"1+X"certificate system are analyzed to look for a way in the collaboration of credit bank and the T+X"certificate system.The firm collaboration as well as the connection and optimization between government,schools,and enterprises as one body form a new talent training mode with the"1+X"certificate system that integrates academy and certificates as well as involving both,schools and enterprises according to China's credit bank concept.

基于Witness的汽车零部件生产物流系统仿真研究

在分析某企业汽车零部件生产物流系统基础上,采用Witness仿真软件对汽车零件的制造流程进行仿真研究。通过仿真发现该企业汽车零件生产物流系统存在的问题,进而提出改进方案。结果对比,设备利用率提高幅度91.43%;生产周期缩短幅度43.43%;生产率提高幅度67.80%。应用本论文研究结论可有效提高该企业的生产效率和效益,同时本论文也为其他制造企业的生产物流系统分析与改善提供了理论依据和方法。

基于Witness的飞轮生产线生产节拍平衡研究

车间的生产节拍平衡决定了企业生产效率的高低,是解决制造业车间面临的主要问题的最佳途径,研究了某飞轮生产线生产节拍的平衡问题。对某飞轮生产线生产现状进行分析,测定工序作业时间,应用Witness软件进行仿真建模,发现瓶颈环节与利用率不足等不平衡现象,运用生产节拍平衡方法等改进生产线,达到日产目标,消除瓶颈环节,使机器与人员利用率均衡。通过比较生产节拍平衡前后的相关参数,生产线改善效果明显,生产效率得以提高,进而降低企业成本。

基于Witness的某制造车间生产线仿真优化

以某立柱制造车间生产线设计为例,运用TOC约束理论和DBR排程理论,结合Witness软件进行制造系统的建模与仿真,分析影响制造系统生产线的各种影响因素,通过设置各项参数、调整设备数量来优化生产物流,提高机器利用率和生产效率以使企业在市场竞争中获得优势。

A New Self-Generated-Certificate Public Key Encryption Scheme with Flexible Public Key

Self-Generated-Certificate Public Key Cryptography(SGC-PKC) ,is the enhanced version of Certificateless Public Key Cryptography(CL-PKC) . It preserves all advantages of CL-PKC. Similar to CL-PKC,every user is given a partial private key by the KGC and generates his own private key and corresponding public key. In addition,it can defend against the Denial-of-Decryption(DoD) Attack. In this paper,we propose a new approach to construction SGC-PKE scheme that derived from a new application of chameleon hash and give a concrete scheme. It is the first scheme which has flexible public key and reaches Girault's trusted level 3,the same level as is enjoyed in a traditional PKI.

基于Witness 2003仿真技术的图书馆服务系统的仿真实现及优化分析

以一高校图书馆流通部的服务系统为实例进行分析,建立了一个图书馆服务系统模型;针对传统排队理论在复杂服务系统中应用的局限性———单阶段服务或系列服务中的一个阶段服务各自都是独立的,利用W itness 2003高级仿真技术为该图书馆流通部建立一个服务系统仿真模型,实现了对影响排队系统的内在因素(服务台服务效率)和外在因素(书库读者流输出的服务请求)的有效整合;根据仿真系统在仿真钟时间内运行后的服务系统绩效参数报表,进行优化分析,并结合资源稀缺性的现实问题,为现有系统提出了优化方案。

基于Petri网和Witness的转向架生产装配系统的建模及仿真优化

转向架的生产、装配属于典型的离散事件系统,为了使某机车厂满足市场需求,降低生产成本并提升竞争力,利用Petri网对CRH2型动车组转向架生产装配系统进行了建模,描述了系统中事件的相互关系,直观地展现了转向架的生产装配流程。并在上述基础上,运用Witness软件进行仿真,找到了制约生产装配系统生产效率提高的瓶颈问题,并对系统进行优化,使生产率提高了36. 7%。

某生产系统基于Witness的仿真与优化

以某钢制门的制造生产为研究对象,应用Witness软件进行建模仿真研究。首先,对产品生产过程进行实地调研和数据测量,并对当前生产过程进行建模和仿真分析,找出生产系统中设备利用率不均衡的问题。然后,针对问题并结合企业实际,提出了改进机加工工艺流程和调整工人作业时间的新方案,并对新方案进行了再次建模仿真,验证了方案的正确性和可行性。通过改进,不但能提高生产加工效率,减少操作人员,还能降低企业大量的生产成本。

基于Witness仿真的生产线规划评价

文章以上海通用汽车动力总成项目中某生产线设计案例为研究对象,运用基于Witness仿真软件的建模与分析方法,研究评估了规划设计中仅用一套机械臂运输装置是否能够满足产能的问题。并进一步运用敏感性分析的方法,借助仿真分析,探索了提高产出量的途径。

基于SLP和Witness的车间布局设计

针对车间布局设计中提出的提高生产效率、优化生产物流的要求,提出改进式车间布局设计方法。使用SLP方法对车间各作业单元进行划分,量化各作业单元之间的物流关系及非物流关系,通过设定重要性比例确定作业单元间综合相互关系,并得出车间布局方案群。通过设定Witness仿真参数,对初选方案生产物流运行状况进行动态模拟,通过车间物流量及路径拥塞率的对比得出方案优选结果。

基于WITNESS的农场收获机器系统配备应用仿真研究

目前农场在收获作业中,大多以经验法进行收获机器系统的配备,从而导致因运载机械配备不合理而造成的收获作业延误情况。结合农场在收获作业中存在的问题,对收获机及运载机械相关数据进行实地测量,将农场的收获过程视作物流系统,运用系统仿真的原理,应用系统仿真软件对收获过程进行建模,查找实际生产中收获机与运载机械的配备中存在的问题,并对仿真模型进行优化分析,得出最佳的配备方案。从而解决以往农业机器系统配备中运载机械配备存在的问题。

Witness在摩托车油箱涂装生产线系统中的仿真应用

分析了摩托车油箱涂装工艺流程,针对油箱涂装生产线系统的特点,采用Witness仿真软件构建油箱涂装生产线物流仿真模型,定义了模型的元素及功能,设定仿真参数,根据系统的繁忙率与空闲率,提出优化措施,为制造企业的生产物流系统分析与改善提供理论依据和仿真模型。

基于Witness的多品种批量生产系统仿真优化

针对多品种批量生产系统的复杂性,为提高其生产效率,综合考虑人、机、法、料四个方面的因素,提出了一种基于Witness的多品种批量型生产系统仿真优化方法。描述了待研究的科学问题,设计了仿真逻辑,提出了仿真模型构建的关键技术,通过仿真试验验证了所提方法的有效性。

基于Witness的多服务台排队等待模型仿真应用

应用排队理论建立多服务台等待制模型,研究了不同的服务台窗口数目与服务强度以及客户损失率之间的关系,运用Witness软件进行建模仿真,并用具体的银行窗口排队实例进行验证,发现现阶段的银行窗口数目存在一定的不合理,在现有资源条件下是可以改善的。结果表明根据不同时段的人流量设定适当数目的服务窗口,可以大大减少顾客的等待时间,明显改善服务系统的服务效率。

基于WITNESS生物质田间收获系统配置研究

农作物秸秆田间打捆后收集及运输中存在机器系统配备问题,装载及运载机械配备不合理导致作业成本增加,延误农时。结合生物质秸秆收获作业对装载机及运输机械作业时间实地测量数据,将工业工程方法应用于分析装载与运载机械联合作业关系,建立作业时间和成本数学模型,获得理论可选方案。应用WINESS仿真软件分别对4种配备方案作建模与仿真分析,得出中小型农场采用2辆装载和1辆运载机械且装载机跟行方案时农场收获运输成本最低。可为田间生物质收获机器系统配备提供理论依据。

基于Witness的某发动机总装车间生产系统仿真设计与参数优化

对某发动机总装车间充分调研,导入和实施拉动式看板生产系统,并进行仿真优化,解决该车间传统推动式生产系统存在生产效率低下,设备利用率低,订单平均等待时间长等问题。对导入看板后的生产系统仿真设计,可得出平均订单延迟时间大大减少,设备利用率提高,产品产量大幅增加,车间综合生产效益得到明显改善。进一步仿真优化,研究安全系数和变异系数对看板生产系统的系统产出量,在制品库存,订单平均等待时间,设备稼动率等绩效指标的影响,为实施方案参数选取提供参考。