Swi prolog operators trabalhos

Preciso de ajuda para fazer um projeto para a minha faculdade na matéria introdutória de prolog

Preciso de um jogo de tabuleiro tipo Mancala com algumas features diferentes. Mais detalhes em privado. Em Java ou, em último caso, em Python ou Prolog. Até dia 7 de junho. I need a board game similar to Mancala with some specific features. I'll send you more details privately. Preferably in Java, but Python or Prolog are also an option. Until 7 june.

Ola, Ricardo! Estou a fazer um projeto para a universidade em Prolog e preciso de ajuda imediata para conseguir acabar porque tenho algumas duvidas. Para quem esta familiarizado com a linguagem, torna-se muito simples certamente. Aguardo resposta, Maria Varanda

Pequeno projeto desenvolvido em Prolog. Responder a algumas questoes usando metodos de pesquisa e listas triviais. NEcessário o uso do SWI Prolog

Buscamos pessoas para trabalhar como operadores de chat em rede social. Ambos os sexos. O operador responderá a comentários, chats e emails de influenciadores digitais dentro de uma rede social. Necessário possuir PC com internet de alta velocidade. Disponibilidade de 6 horas/dia. Numa base diária de 30 dias.

programa em Prolog que permite organizar um espetaculo de ginastica r´ıtmica estabelecendo um plano de exercıcios e o grupo de ginastas que vai participar em cada exercıcio. Cada exercıcio é definido por predicados do tipo: exercicio(id,descricao,minginastas,idademin,idademax,tempo). Cada exercıcio é identificado por um numero (id), por um nome (descricao), pelo numero mınimo de ginastas a participar no exercıcio, as idades mınima e maxima dos ginastas deste exercıcio e o tempo previsto de dura¸cao. Cada ginasta deve ser definido pelo seguinte predicado: ginasta(num,nome,idade). onde, para alem da identifica¸cao num e nome deve ser indicada a idade do ginasta. Cada plano nao é mais do que um plano provisorio do espetaculo porque &eacut...

Realizar um puzzle Sudoku Simples em SWI-Prolog. Não é preciso realizar os passos todos basta até ao Inspecciona(Inclusive).

Projecto em Prolog, realizar um sudoku, não é necessário realizar o projecto todo, basta até à alinea 3.3.2(inclusive) o que inclui as funções inspeciona.

O banco de dados contém os dados dos alunos, das atividades, das disciplinas e as respectivas notas, mantendo uma base de dados que mostra a situação de cada aluno com relação ao seu desempenho nas atividades. O Assistente virtual analisa as atividades, e de posse da situação, uma vez percebendo que este não está bem no andamento das atividades, a partir desta percepção, o Agente entra em contato com um aluno que está em dia com as atividades e pergunta se ele pode ajudar o colega com dificuldades.

O banco de dados contém os dados dos alunos, das atividades, das disciplinas e as respectivas notas, mantendo uma base de dados que mostra a situação de cada aluno com relação ao seu desempenho nas atividades e em cada disciplina. O Assistente virtual analisa as atividades, as notas de cada aluno e de posse da situação, uma vez percebendo que este não está bem em uma determinada disciplina, a partir desta percepção, o Agente entra em contato com um aluno que está bem na referida disciplina e pergunta se ele pode ajudar o colega com dificuldades.

A proposta visa à implementação de um sistema multiagentes, a ser desenvolvido com o Prolog (ou a framework para sistemas multiagentes JADE), e atuará como um assistente pessoal do aluno, identificando os conteúdos em que ele possui dificuldade e apresentando sugestões (material de consulta na internet ou colegas de classe que possam lhe ajudar).

Simulação de um leilão Sistema Multi-agente simulando os intervenientes num leilão. O sistema deverá incluir um agente arrematador e vários agentes licitadores. Devem ser previstas as seguintes variantes: a) leilão estilo “lota de peixe” ou leilão holandês (começa de cima e ganha o que licitar primeiro) Os licitadores e o arrematador deverão dispor de intervalos de avaliação dos produtos (valor mínimo e valor máximo) e uma função de variação do valor a licitar. O valor máximo a oferecer pelo licitador Li poderá, em certas situações, ser superior ao valor máximo (por exemplo, caso um outro licitador Lj com gran...

criar jogo Frogs Jump Free () em linguagem prolog com apenas 2 ou 3 niveis.

About Us: We specialize in Network-as-a-Service (NaaS) solutions, offering cutting-edge Link Aggregation packet-based balancing. Our CR-SDWAN simplifies WAN setups, providing reliable and secure connectivity with ease of deployment, flexibility, performance, and security. Key Details: *Target clients: Telecom Operators, ICT companies, Internet Service Providers, MSPs, and Large Corporations, Direct Client SME, worldwide. *White Label solution available. *Rapid deployment: Platform set up in just 30 minutes. *Commission rates: 20% to 35% (commission schedule provided), plus fixed commission for all products sold and contracts signed. Opportunity: We are seeking: *Freelancers to handle end-to-end sales process. *Commission-based compensation only. *Fixed commission for all pro...

I'm in the process of building a recruitment agency in the social care sector, located in Nottinghamshire. To help with this, I need a team of professional telephone operators to assist me in the initial stages of customer outreach. Key Responsibilities: - Cold calling potential customers in the Nottinghamshire area - Gathering customer information effectively and accurately - Scheduling appointments with interested parties Ideal Skills and Experience: - Proven experience in telephone-based roles, particularly in cold calling and customer service - Excellent communication skills - Proficiency in using CRM software for managing customer interactions - Experience with appointment scheduling software The ideal candidate will be a loyal and honest person, as they will be the fa...

I'm looking for a skilled developer who can create a Custom Milestone Alarm Manager for our existing security system. Key Features: - Real-time alarm notifications: The system should be able to notify our operators as soon as an alarm is triggered. - Centralized alarm management: I want all the alarms to be managed under a single interface for easier monitoring and control. The current security system is built on the Milestone platform, so experience with this software is a must. Develop an automated alarm management system that minimizes manual intervention. Deliver a user-friendly interface for efficient alarm handling and response. Deliverables: Fully functional Custom Milestone Alarm Manager integrated into existing systems. Complete documentation on system architectur...

...identifiers and integer literals. (The rules for identifiers and literals are described in the book.) For example, how does it handle an illegal identifier ‘2sum’ or an illegal integer literal ‘23b2’? Make appropriate changes to the state transition diagram and the code to enable the lexical analyser report the above-mentioned errors. Second change is to enable the lexical analyser handle assignment operators and certain key words. After this change it should be able to handle assignment statements and keywords: ‘if’, ‘then’ and ‘else’. Test your analyser on the following input file: x = 5 sum = x * 3 / 5 if sum > 1 then sum = sum + 1 else sum = sum – 1 Part 2: Syntax Analysis In this Part you will extend th...

...engagement and streamline operator interactions. Here's what I'm looking for: 1 Chat operator with payment per minute 2 Creation of operators with profile photo and description and rate per minute 3 Administrator who manages the minute history and chat history in the plugin 4 Insertion of individual operators on the site each with a single code and chat command which allows you to make PayPal top-ups and access the chat 5 Operator status online offline pause 6 Access panel for operators with username and password generated by me where they receive the chats, see the history of the minutes 7 ) Access users to their personal area to top up, chat with other operators and see remaining minutes The plugin must work on several websites and not just one Id...

...challenges associated with managing and implementing load shedding in an efficient and organized manner. As electricity supply continues to be a critical issue in Zimbabwe, it is imperative to have a system in place that can effectively manage the limited supply of electricity during periods of high demand or supply constraints. The Load shedding Scheduler System aims to provide utilities, grid operators, and other stakeholders with a powerful tool to schedule and manage load shedding in a way that minimizes disruption to consumers while maintaining grid stability. The system offers advanced features such as real-time monitoring, predictive analytics, and automated scheduling to optimize the allocation of available during periods of scarcity Problem Definition: The issue of elec...

...challenges associated with managing and implementing load shedding in an efficient and organized manner. As electricity supply continues to be a critical issue in Zimbabwe, it is imperative to have a system in place that can effectively manage the limited supply of electricity during periods of high demand or supply constraints. The Load shedding Scheduler System aims to provide utilities, grid operators, and other stakeholders with a powerful tool to schedule and manage load shedding in a way that minimizes disruption to consumers while maintaining grid stability. The system offers advanced features such as real-time monitoring, predictive analytics, and automated scheduling to optimize the allocation of available during periods of scarcity Problem Definition: The issue of elec...

...Site Verifier, you will be involved in our pre-employment screening by conducting a visit to our candidates’ residential address with the candidate’s consent letter. JOB DESCRIPTIONS: • Conduct the site visit to the candidate’s residential address • Conduct the basic verification of the candidate’s residence & reputation with the neighbors, head of the local community, police stations, building operators, etc. • Take pictures of the candidate’s residential address, as per Confirmis’ standard operating guidelines. • Provide observation about the address such as the location, the building, etc • Job will only take less than one hour to accomplish (excluding travel time) REQUIREMENTS: • Must be living in (or nea...

...Site Verifier, you will be involved in our pre-employment screening by conducting a visit to our candidates’ residential address with the candidate’s consent letter. JOB DESCRIPTIONS: • Conduct the site visit to the candidate’s residential address • Conduct the basic verification of the candidate’s residence & reputation with the neighbors, head of the local community, police stations, building operators, etc. • Take pictures of the candidate’s residential address, as per Confirmis’ standard operating guidelines. • Provide observation about the address such as the location, the building, etc • Job will only take less than one hour to accomplish (excluding travel time) REQUIREMENTS: • Must be living in (or nea...

...Verifier, you will be involved in our pre-employment screening by conducting a visit to our candidates’ residential address with the candidate’s consent letter. JOB DESCRIPTIONS: • Conduct the site visit to the candidate’s residential address • Conduct the basic verification of the candidate’s residence & reputation with the neighbors, head of the local community, police stations, building operators, etc. • Take pictures of the candidate’s residential address, as per Confirmis’ standard operating guidelines. • Provide observation about the address such as the location, the building, etc • Job will only take less than one hour to accomplish (excluding travel time) REQUIREMENTS: • Must be living in...

...Site Verifier, you will be involved in our pre-employment screening by conducting a visit to our candidates’ residential address with the candidate’s consent letter. JOB DESCRIPTIONS: • Conduct the site visit to the candidate’s residential address • Conduct the basic verification of the candidate’s residence & reputation with the neighbors, head of the local community, police stations, building operators, etc. • Take pictures of the candidate’s residential address, as per Confirmis’ standard operating guidelines. • Provide observation about the address such as the location, the building, etc • Job will only take less than one hour to accomplish (excluding travel time) REQUIREMENTS: • Must be living in (or nea...

...outgoing trunk DIDs. - The system should handle both incoming and outgoing calls efficiently. - The endpoint devices that will connect to the Asterisk PBX are Mobile Operator issued SIP trunks. Ideal Skills and Experience: - Prior experience in setting up and configuring Asterisk PBX systems is essential. - Proficiency in handling and routing calls effectively. - Knowledge of SIP trunks and mobile operators' systems would be a plus. Specific Requirements Requirement: A simple Asterisk PBX installed on our server. It is a voice transit facility with incoming and outgoing SIP trunks. All incoming caller ID’s will be replaced by the DIDs provided for each MNO trunk. Connections 1) Multiple incoming customer Accounts from Soft switches like VOS3000 2) Multiple Outgoing ...

I'm seeking a skilled CNC machine programmer to create the STL file for CNC machining. The product coming from the CNC machine will be several large panels in solid wood - approximately 2.5ft x 10ft panel featuring a wave design. Attached is a sample of the wave pattern. Your role will be to create the file so that the CNC machine operators can geed this in the machine to produce the panels. I look forward to collaborating with a committed freelancer who values high-quality craftsmanship and delivers exceptional work.

...repetitive patterns in the rhythms and melodies typical of the tarantella dance. TouchDesigner Setup: Establish a TouchDesigner project that will serve as the platform for displaying audio data. Python Scripting in TouchDesigner: Write Python scripts within TouchDesigner to import and utilize data extracted from the AI analysis. Creation of Custom Operators: Employ CHOP (Channel Operators) to manipulate audio data in real time and TOP (Texture Operators) to display associated visual elements. Deliverables: A fully functional TouchDesigner project incorporating both audio-visual and interactive elements. Complete Python code for developing AI models and processing audio. A fully operational web-based platform to display the interactive audio-visual content. The ...

...Site Verifier, you will be involved in our pre-employment screening by conducting a visit to our candidates’ residential address with the candidate’s consent letter. JOB DESCRIPTIONS: • Conduct the site visit to the candidate’s residential address • Conduct the basic verification of the candidate’s residence & reputation with the neighbors, head of the local community, police stations, building operators, etc. • Take pictures of the candidate’s residential address, as per Confirmis’ standard operating guidelines. • Provide observation about the address such as the location, the building, etc • Job will only take less than one hour to accomplish (excluding travel time) REQUIREMENTS: • Must be living in (or nea...

...talented designer to help me with an engaging and relevant book cover for my new non-fiction, personal development book aimed at 911 operators. Your responsibilities: - Understand the target audience and the main theme of the book to create a cover that captivates readers - Create a design that emphasizes personal growth, resilience and the unique challenges of being a 911 operator Skills and Experience: - Previous experience in book cover design, especially in the non-fiction and personal development genre, will be appreciated - Knowledge of design software and tools - The ability to come up with creative and original ideas - An understanding of the 911 operators work environment, their challenges and potential growth areas would be beneficial in creating a relatabl...

...challenges associated with managing and implementing load shedding in an efficient and organized manner. As electricity supply continues to be a critical issue in Zimbabwe, it is imperative to have a system in place that can effectively manage the limited supply of electricity during periods of high demand or supply constraints. The Load shedding Scheduler System aims to provide utilities, grid operators, and other stakeholders with a powerful tool to schedule and manage load shedding in a way that minimizes disruption to consumers while maintaining grid stability. The system offers advanced features such as real-time monitoring, predictive analytics, and automated scheduling to optimize the allocation of available during periods of scarcity Problem Definition: The issu...

I'm in need of a proficient programmer to design a chatbot aimed at customer service inquiries for my company. Key features should include: - Understanding and responding accurately in Filipino, as this...include: - Understanding and responding accurately in Filipino, as this is our primary customer base language. Experience in natural language processing or similar would be valuable here. - The chatbot's main function will be to handle customer service inquiries, so it should be configured to address common issues, route users to the appropriate resources, and escalate more complex issues to human operators when needed. A successful delivery should efficiently and effectively manage and respond to customer service queries in a professional, cordial manner reflective o...

...need of a ready to go Crane Monitoring Dashboard with specific features and integration requirements. The dashboard must cater mainly to crane operators, and Project manager providing them with crucial insights and alerts. Key Requirements: - Real-time monitoring: The dashboard should display live data from various crane sensors. This ensures operators can make informed decisions promptly. - Performance analytics: An integral part of the dashboard should be its capacity to analyze historical data, providing insights into crane performance over time. - Alert notifications: The system needs to be equipped with a robust alert system, ensuring operators are promptly informed of any critical issues. Skills & Experience: - Prior experience working with Crane Monitor...

...Site Verifier, you will be involved in our pre-employment screening by conducting a visit to our candidates’ residential address with the candidate’s consent letter. JOB DESCRIPTIONS: • Conduct the site visit to the candidate’s residential address • Conduct the basic verification of the candidate’s residence & reputation with the neighbors, head of the local community, police stations, building operators, etc. • Take pictures of the candidate’s residential address, as per Confirmis’ standard operating guidelines. • Provide observation about the address such as the location, the building, etc • Job will only take less than one hour to accomplish (excluding travel time) REQUIREMENTS: • Must be living in (or nea...

Looking for a very experienced Laravel, Livewire and Tailwind CSS developer to aid in developing a comprehensive application to manage aircraft maintenance. The primary goal is to streamline the maintenance process for aircraft operators and maintenance providers. Key deliverables include: 1. **Aircraft Inspection Tracking:** A tool to log and monitor inspection progress. 2. **Maintenance Scheduling:** Ability to schedule maintenance tasks ahead of time. 3. **Inventory Management:** Keep track of parts inventory including a system for inventory depletion and refill. 4. **AME Logbook Management:** A system to maintain Aircraft Maintenance Engineer logbooks. 5. **Personnel Training Management:** Keep tabs on training schedules and progress of staff. 6. **Customer Communication and In...

I'm in need of an experienced PLC programmer to help me develop a control system for our weight sorting machine. Here's what I need: - **Weight Units**: The products we handle are weighed in grams. It's important that the control system be able to accurately measure products in this unit. - **Accuracy Level**: The desired level of accuracy for the weight measur...should have prior experience in PLC programming, particularly in the context of industrial machinery. Experience with weight sorting systems would be a bonus. I'm looking for someone who can effectively integrate the weight measurement and sorting functionalities in the system, ensuring optimal performance and accuracy. The programmer should also be able to provide a user-friendly interface for operators...

I need an expert who can retrieve and compile a comprehensive list of home to school transport operators operating at the local level. Key Responsibilities: - Conduct deep web research to identify and compile a list of transport operators - The list must be specific to the county level - Ensure that the list is up-to-date and includes relevant contact details Ideal Skills: - Proficient in web research - Strong data mining capabilities - Familiarity with the transport industry would be a plus Experience: - Previous experience in compiling detailed lists through web research.

...payment through Paypal. This email should serve two purposes. The first is to confirm the purchase to the customer, and the second is to notify me as the admin of the website. I'd like to use a customizable email template for this function. - Tour Operator Email: Additionally, there should be a third email sent to our tour operators. This email should contain the booking details of the customer who purchased the tickets. This information is crucial for our operators to prepare for the tour effectively. - Availability Control: I also need an easy way to control the availability of tours. I would prefer a system that's easy to access and manage. - Show exact tour hours. currently, my website shows only rounded numbers. I need to have 1.5h etc. Ideal skills an...

...Site Verifier, you will be involved in our pre-employment screening by conducting a visit to our candidates’ residential address with the candidate’s consent letter. JOB DESCRIPTIONS: • Conduct the site visit to the candidate’s residential address • Conduct the basic verification of the candidate’s residence & reputation with the neighbors, head of the local community, police stations, building operators, etc. • Take pictures of the candidate’s residential address, as per Confirmis’ standard operating guidelines. • Provide observation about the address such as the location, the building, etc • Job will only take less than one hour to accomplish (excluding travel time) REQUIREMENTS: • Must be living in (or nea...

My name is Rostislav, I represent the Unifun company, we develop VAS services for mobile operators. An example of our projects are the IVR Radio and IVR Islamic services, which have been successfully launched on the Sudani mobile network and Zain mobile network in Sudan. Within these projects, as well as others, we need someone to assist us with testing. Below are the conditions: To conduct tests, it is necessary to have a phone and a Sudani SIM card and Zain SIM card. Testing will involve making calls, sending SMS notifications, and may also require translating SMS from English to Arabic, checking audio files in Arabic, and so on. Conditions: - Everyday - a person should conduct testing of our services in the morning (not more than 5-10 minutes) - Payment calculation on a monthl...

...written in a formal tone that aligns with our corporate image. Documents Suite Required: Review Document for aligned formatting - Quality Management Manual - Quality Management Methodology - Electrical Commissioning Plans Create Document - Electrical Log Book Guidelines - MDR Guidelines - Packing & Marking Guidelines - Vendor Data Specification Create Template - ITP - MDR - SWI - JHA Ideal Candidate: - Experience in writing corporate policies and procedures, preferably in a formal tone. - Strong technical writing skills with the ability to translate complex information into easily understandable language. - Familiarity with compliance regulations and standards. - Excellent communication skills and attention to detail. - Ability to communic...

I'm looking for a skilled software developer to create a detailed Bus Booking software that is compatible with Android and Web platforms. The software needs to be feature-rich and user-friendly, catering to both passengers and bus operators. Key Features: - Online Payment Integration: The software should support Credit/Debit card payments, Net banking, Mobile wallet integration, and Upi. - Seat Selection: Passengers should be able to choose their seats comfortably. - Bus Route Tracking: Tracking the location of the bus and estimated arrival times should be precise. - Holding Features: In case of any technical glitch or connectivity issues, the system should be able to hold the information securely. - Summary & Every Detail: The software should provide a comprehensive summ...

PLEASE CHECK THE DESCRIPTION BEFORE SUBMITTING A BID Let's skip a boring description generated by AI. Actually, we are looking for a hero who helps us get all things about gambling in Spain, especially iGaming. We are not interested in bettings side of this market, only online casino games are in focus and all things around it, including main operators, target audience, regulative organisations, etc. Please don't use a complicated diagrams with numbers and dry copy paste, cause we have already done it on our side :) As result of this project we are waiting for simple and well structured document no matter pdf, page in Notion or Google docs. That will be a starting point to do things. We are going to understand how people spin in Spain and who is in charge of it. We are n...

I need an electrical engineer with a strong background in designing and building high resistance measuring circuit solutions. You'll specifically be working to design an electrical module that focuses on two main functions: 1. Measuring Circuit Resistance - The module should be able...detect a fault in the circuit but also display this fault for an operator to see and diagnose. Ideal candidates should have: - Strong knowledge and background in electrical engineering, specifically circuits. - Experience with designing for high resistance applications. - Understanding of fault diagnosis and rectification in circuits. - Ability to create an effective way to display faults for operators. If you have the right skills and experience, I'd love to hear from you and discuss t...

--- **Job Title: Freelancer Needed to Build Crypto Host Platform for Bitcoin Transactions** **Project Overview:** We are seeking a skilled freelancer to build a Crypto Host platform specifically designed to handle Bitcoin (BT...experience, relevant skills, and approach to building the Crypto Host platform for Bitcoin transactions. Include examples of previous work or portfolios that demonstrate your expertise in cryptocurrency development, particularly with a focus on Bitcoin (BTC). Additionally, provide your proposed timeline and budget for completing the project. **Note:** We are only interested in direct Crypto Host Operators with a proven track record of reliability and legitimacy. Please do not apply if you do not have experience in developing Bitcoin-focused cryptocurrency ...

A small project: Write an expert system in the form of a set of rules, facts, constants, auxiliary functions, etc. The goal of the system should be to solve specific instances of problems from a given domain.

I'm seeking a seasoned Matlab expert ...invaluable. The goal is to use Kalman filter to esmate the level of the water in the tank using the noisy measurements coming from the level sensor. Assume that the dynamics and the measurements are modeled by the following equa ons: ?(? + 1) = ? ?(?) + ? ?(?) + ?? ?(?) = ? ?(?) + ? With the following skills and experience, you'll fit right into this role: - Proficient in Matlab’s language, operators, and constructs - In-depth understanding of Kalman filter algorithm - Previous experience coding from scratch - Creative problem-solving skills - Excellent debugging abilities Kindly submit your bid detailing any relevant experience, as well as tossing in a line or two about why you believe you'd be a good fit. I look...

Join our Cloud team as an experienced engineer. You'll design and scale our solution from an infrastructure perspective across multiple clouds. Key Qualifications: 5+ years of engineering experience. Proven SRE or DevOps expertise. Strong experience with Kubernetes and Kubernetes operators. Ability to understand, write and review code in Go. Solid experience with AWS cloud infrastructure. GCP/Azure would be a plus. Skilled in observability practices. Contributions to open-source projects are a significant plus. Initiative at the level of independent project/task management. The position expects on-call shifts during working hours. Preferable time zone for this role is GMT+0 - GMT+4 Technology Stack: AWS, Kubernetes, Go, Terraform, Postgres (RDS), VictoriaMetrics and Prometheus ...

I'm searching for a freelancer who has established connections within the iGaming industry, specifically with casino operators and affiliate marketers. This project will focus on promoting SEO services, primarily link building, to these key contacts in Europe and North America. The ideal candidate possesses: - A comprehensive understanding of and proficiency in SEO services, specifically link building - Existing connections within the iGaming industry, focusing on casino operators and affiliate marketers - Knowledge of and experience with the European and North American iGaming markets

...will be used by a small team of 1-10 users. I am looking for a skilled developer with experience in CRM and database development, as well as a good understanding of user interface design. The ideal candidate should be able to deliver a high-quality, tailored solution that aligns with our business goals. Further Information 1. Business CRM system – Our business involves working with Oil and Gas operators over various projects. I would require a CRM that would link opportunities, duration of the project/scope of work, drop down editable scope of work, who the contact is, follow up date and optional fields such as day rate to man, day rate to client then it calculates the potential profit per day then total over the duration of the scope of work. The scopes of work can ran...

As the project manager, I am seeking experienced and capable operators to perform loading and moving tasks with a wheel loader in an agricultural setting. Key Responsibilities: - Load and move materials up to a maximum of 3 tons - Operate the machine within an agricultural field - Maintain safety standards on work site Ideal Skills and Experience: - Prior work experience with wheel loaders - Familiarity with operations in agricultural settings - Capable of handling machinery that can lift up to 3 tons - Strong understanding of workplace safety protocols.