Are you driven, ambitious, and ready to thrive in a dynamic sales environment?

At Masstron Pte Ltd, we provide One-Stop Total Communication Solutions for the Marine and Factory Automation industries. We are looking for a passionate Sales Executive to join our team, playing a key role in expanding our client base and driving business growth in these fast-paced sectors.

Why Join Us?

• Competitive Salary Package: Attractive base salary + high commission
• Career Growth Opportunities: Fast-track career progression into leadership roles for high performers
• Comprehensive Training: Ongoing product and sales training to ensure your success
• Industry-Specific Exposure: Work with cutting-edge communication solutions for marine and factory automation industries

Key Responsibilities:

• Identify and generate new business opportunities through cold-calling, networking, and referrals
• Build and maintain strong relationships with new and existing clients in the Marine and Factory Automation sectors
• Present and promote our Total Communication Solutions to potential clients
• Achieve sales targets and contribute to the overall growth of the company
• Prepare and deliver sales presentations and proposals tailored to industry-specific needs
• Collaborate with internal teams to ensure smooth delivery and customer satisfaction
• Maintain accurate records of sales activities and client interactions

Requirements:

• Diploma or Degree in Business, Marketing, or a related field
• 1-2 years of experience in B2B sales, preferably in Marine or Factory Automation sectors (fresh graduates with passion for sales are welcome to apply)
• Excellent communication and interpersonal skills
• Driven, self-motivated, and results-oriented
• Ability to work independently and as part of a team
• Willingness to travel for client meetings (if required)

What We Offer:

• Competitive salary with attractive commission structure
• Transportation and mobile allowance
• Fun and energetic work environment with team-building activities
• Medical benefits
• Professional development and training opportunities

Perks & Benefits

• Employee equity
• Personal leave
• Personal development opportunities

Are you driven, ambitious, and ready to thrive in a dynamic sales environment?

At Masstron Pte Ltd, we provide One-Stop Total Communication Solutions for the Marine and Factory Automation industries. We are looking for a passionate Sales Executive to join our team, playing a key role in expanding our client base and driving business growth in these fast-paced sectors.

Why Join Us?

• Competitive Salary Package: Attractive base salary + high commission
• Career Growth Opportunities: Fast-track career progression into leadership roles for high performers
• Comprehensive Training: Ongoing product and sales training to ensure your success
• Industry-Specific Exposure: Work with cutting-edge communication solutions for marine and factory automation industries

Key Responsibilities:

• Identify and generate new business opportunities through cold-calling, networking, and referrals
• Build and maintain strong relationships with new and existing clients in the Marine and Factory Automation sectors
• Present and promote our Total Communication Solutions to potential clients
• Achieve sales targets and contribute to the overall growth of the company
• Prepare and deliver sales presentations and proposals tailored to industry-specific needs
• Collaborate with internal teams to ensure smooth delivery and customer satisfaction
• Maintain accurate records of sales activities and client interactions

Requirements:

• Diploma or Degree in Business, Marketing, or a related field
• 1-2 years of experience in B2B sales, preferably in Marine or Factory Automation sectors (fresh graduates with passion for sales are welcome to apply)
• Excellent communication and interpersonal skills
• Driven, self-motivated, and results-oriented
• Ability to work independently and as part of a team
• Willingness to travel for client meetings (if required)

What We Offer:

• Competitive salary with attractive commission structure
• Transportation and mobile allowance
• Fun and energetic work environment with team-building activities
• Medical benefits
• Professional development and training opportunities

Perks & Benefits

• Employee equity
• Personal leave
• Personal development opportunities

What will you do?

• Manage the Project Controlling of Process Automation & GCP Ops Business for Singapore & Thailand and extend support to the business manager by providing different financial information helping him to make informed decision.
• Project financial management including budgeting, forecasting, managing project cost, maintaining compliance with our internal policies & IFRS, participation in monthly project reviews, inputs on bids including costing sheet review, financial analytics incl. monthly cost variance reviews, book closing, month end reporting and over view of account receivable, Analysis of Order backlog, with a primary focus to minimize the risks ,cost reduction & stop revenue leakage.
• Build long-term relationships with many stakeholders and act as an expert helping finance business partner for them, and help the business in achieving profitable growth
• Work closely with project managers to prepare robust financial budgets and forecasts and understanding the financial implications and outcomes of project activities.
• Prepare monthly financial information and analysis for projects to explain actual financial performance to different stakeholders and enable appropriate project financial accounting for revenue recognition, cost recognition.
• Address inconsistencies to the management and propose solutions.
• Work with the different finance team members to improve financial management practices and financial awareness across the business.
• Evaluate the financial implications of various strategic decisions, builds scenarios and recommends actions. Additionally, you will address all ad hoc financial reporting requirement.
• Perform year-end and any other requisite analytics and reporting and assist in special projects or process improvements projects as may be assigned from time to time.

What qualifications will make you successful?

• Chartered Accountant or Cost Accountant, University and/or Business School : Master's degree or equivalent in Finance , Control, Audit
• 5+ years of experience in a similar role and environment (Project controlling) and experienced in supporting management
  and leadership by providing insight, analysis, and financial results for review
• Proactive and tenacious in follow up; self-motivated, “can-do attitude”, results-oriented with a high level of integrity
• Solid working knowledge of MS Office - Excel, Access and PowerPoint & knowledge of SAP (PS, FICO)
• Excellent skills in solving problems, making decisions, and resolving conflicts
• Have confidence in communicating with various levels of authority throughout the business
• Excellent verbal and written language skills in English

Scope of Work: The Business Project Manager will be responsible for overseeing and delivering key project initiatives.

Their role involves planning, coordination, and execution of project activities to meet business objectives, ensuring alignment with stakeholders and compliance with regulations.

Key Responsibilities:

Strong presentation skills are a must for this role.

Project Planning and Management

Develop and maintain detailed project plans, timelines, and milestones for the assigned scope.

Coordinate with cross-functional teams to align on deliverables and dependencies.

Identify risks and create mitigation plans to ensure project objectives are met.

Stakeholder Engagement and Communication.

Create a stakeholder map.

Act as the primary point of contact between internal and external stakeholders.

Ensure seamless handover of completed deliverables to the operational teams.

Documentation and Reporting

Maintain comprehensive project documentation (JIRA, confluence, gantt charts, etc), including task trackers, decisions, and lessons learned.

Deliver high-quality presentations and reports for management and stakeholders.

Salary: 7000 - 9000 SGD

Job Purpose and Key Accountabilities:

As a Management Trainee, your main goal will be to learn and master various aspects of the company's operations, including but not limited to operations management, human resources management, team leadership, decision-making, and problem-solving. Through this training program, you will acquire the necessary skills and knowledge to prepare for future senior management positions.

Key Accountabilities:

1. Continuously learn and understand the specific business operations and management strategies of the company.
2. Participate in and lead team projects, enhancing teamwork and leadership.
3. Effectively manage and execute projects in a multitasking and high-pressure environment, with a results-oriented approach.
4. Solve problems encountered in work, formulate and implement solutions, emphasizing replicable processes.
5. Embrace change, continuously improve your skills and knowledge, and break through your own capability boundaries.

Main Duties and Responsibilities:

• Participate in the company's daily operations and management activities, learning the company's business processes and strategies.
• Assume a leadership role in projects, effectively distribute tasks and manage progress, ensuring smooth completion of projects.
• Think independently when encountering problems, propose and implement solutions, and conduct a review after problem resolution.
• Accept feedback from superiors and colleagues, continuously improve your skills and knowledge, and maintain positive energy with an open mindset to change.
• Enhance your professional knowledge and skills by participating in the company's training and learning activities and continuously learning.

Job Specification:

• Education: Bachelor's or master's degree in business management, education, psychology, or other related fields.
• Skills: Leadership and teamwork abilities, problem-solving and decision-making capabilities, project management skills.
• Personal Characteristics: High self-drive, leadership, adaptability, resilience.
• Career Goals: Passionate about education and training, looking forward to long-term development in the company, willing to take up a management position after completing the training.
• Others: Deep understanding of the education and training market in Singapore, familiar with basic information technology and software applications.

Working Hours (43 hours per work week):

Mon : off

Tuesday - Friday : 1.30pm - 7.30pm

Saturday and Sunday: 9.00am - 7.30pm

Job Description

1. Liaise with corporate clients on corporate advisory work, corporate finance, corporate employee benefits, trade finance, Human resources, etc;

2. Source and develop pipeline of corporate clients;

3. Develop and foster relationships with clients, and key stake holders;

4. Working with our partners, such as private equities, family offices and overseas FI.

Compensation

1. $2,400 to $4,000 depending on experience;

2. Opportunity to travel overseas for project management and deals.

Job Purpose and Key Accountabilities:

As a Management Trainee, your main goal will be to learn and master various aspects of the company's operations, including but not limited to operations management, human resources management, team leadership, decision-making, and problem-solving. Through this training program, you will acquire the necessary skills and knowledge to prepare for future senior management positions.

Key Accountabilities:

1. Continuously learn and understand the specific business operations and management strategies of the company.
2. Participate in and lead team projects, enhancing teamwork and leadership.
3. Effectively manage and execute projects in a multitasking and high-pressure environment, with a results-oriented approach.
4. Solve problems encountered in work, formulate and implement solutions, emphasizing replicable processes.
5. Embrace change, continuously improve your skills and knowledge, and break through your own capability boundaries.

Main Duties and Responsibilities:

• Participate in the company's daily operations and management activities, learning the company's business processes and strategies.
• Assume a leadership role in projects, effectively distribute tasks and manage progress, ensuring smooth completion of projects.
• Think independently when encountering problems, propose and implement solutions, and conduct a review after problem resolution.
• Accept feedback from superiors and colleagues, continuously improve your skills and knowledge, and maintain positive energy with an open mindset to change.
• Enhance your professional knowledge and skills by participating in the company's training and learning activities and continuously learning.

Job Specification:

• Education: Bachelor's or master's degree in business management, education, psychology, or other related fields.
• Skills: Leadership and teamwork abilities, problem-solving and decision-making capabilities, project management skills.
• Personal Characteristics: High self-drive, leadership, adaptability, resilience.
• Career Goals: Passionate about education and training, looking forward to long-term development in the company, willing to take up a management position after completing the training.
• Others: Deep understanding of the education and training market in Singapore, familiar with basic information technology and software applications.

Working Hours (43 hours per work week):

Mon : off

Tuesday - Friday : 1.30pm - 7.30pm

Saturday and Sunday: 9.00am - 7.30pm

Job Description:

• Report to Project Manager / Head of Planning.
• Involved in all trades coordination during design development and planning stage (Architectural , Structural & MEP.
• Good knowledge of authority requirement / regulations to execute planning works
• Good knowledge of precast , PPVC , PBU and Dfma concepts
• Ability to adapt to digitalised process in construction industry
• Strong interpersonal skills to liaise with Client/Consultant/Subcon
• Ability to lead a team of Engineers & Coordinators to successfully

Requirements:

• Degree in Civil or Architectural or Construction Management
• 7-10 years experience in Building Environment
• Experience with Precast/PPVC/MET Basic knowledge of Revit , Autodesk BIM360 , Novade ,Powerapps , Power BI is an added advantage
• Completed min 5 project cycles
• Strong Decision making and leadership skill

Job Summary:

At Zeno Exhibition, we aim to create influential, creative, industry leading spatial experiences. Our mission is to deliver extraordinary experiences through simple, user-friendly services and best-in-class execution.

Join our dynamic team as a Project Executive, where you'll play a key role in delivering exceptional experiences and driving impactful outcomes. We offer an exciting opportunity to work in a fast-paced, creative environment with diverse projects and opportunities for growth. If you're passionate about excellence and thrive on collaboration, this is the role for you!

Role and responsibilities:

• Assist in the overall project management lifecycle from conceptualization to post-event evaluation.
• Coordinate with internal teams, external vendors, and subcontractors to ensure smooth execution of project deliverables.
• Support the development of project plans, timelines, and budgets in collaboration with the project manager.
• Assist in the procurement of necessary resources, materials, and services required for project implementation.
• Manage logistical arrangements such as venue booking, transportation, accommodation, and catering for events.
• Liaise with clients and stakeholders to understand project requirements, provide technical support, and address any concerns or issues.
• Monitor project progress, identify risks, and implement mitigation strategies to ensure successful outcomes.
• Prepare and maintain project documentation, reports, and records accurately.
• Contribute to the continuous improvement of processes and procedures to enhance efficiency and effectiveness.

Requirements:

• Minimum Diploma in Event Management, Marketing, Business Administration, or related field.
• Minimum 2 years experience in project management, preferably in the exhibition trade show and conference industry.
• Strong organizational skills with the ability to multitask and prioritize tasks effectively.
• Excellent communication and interpersonal skills with the ability to collaborate effectively in a team environment.
• Detail-oriented with a focus on quality and accuracy in work output.
• Ability to thrive in a fast-paced and dynamic work environment.
• Proficient in Adobe Suite and other project management tools.
• Knowledge of event management software and technologies is a plus.
• Willingness to work flexible hours and travel as required for project assignments.
• Positive attitude, proactive mindset, and a passion for delivering exceptional event experiences.

⁠Interested candidates please send your resume to [email protected]

For more information about Zeno Exhibition. Please visit: https://zenoexhibition.com/

Job Summary:

At Zeno Exhibition, we aim to create influential, creative, industry leading spatial experiences. Our mission is to deliver extraordinary experiences through simple, user-friendly services and best-in-class execution.

Join our dedicated team as a Project Administrator, where you'll play a vital role in supporting the seamless delivery of impactful events and trade shows. This position offers a dynamic environment with diverse responsibilities and opportunities to grow your skills.

Roles and responsibilities:

• Submitting administrative documents to the relevant parties, ensuring compliance with deadlines and requirements for buildups.
• Where required, handling applications for temporary work permits for contractors engaged in event setup and execution.
• Making minor adjustments to artwork or layouts using basic graphic design skills.
• Assisting the Project Director with scheduling tasks and delegating responsibilities to project executives based on their availability and workload.
• Maintaining project records, tracking progress, and ensuring all deliverables align with established timelines.
• Acting as a point of communication between project executives, contractors, and the main project team to facilitate smooth coordination.
• Assisting with ad-hoc requirements, such as arranging deliveries to the event site or addressing unforeseen needs during project execution.
• Supporting the team with other administrative duties as required to ensure project success.

Requirements:

• Minimum Diploma in Business Administrative, Project Management, or related field
• Minimum 2 years of working experience in project administration, event planning, or a similar role.
• Strong organizational and multitasking skills.
• Basic graphic design proficiency (e.g., using Adobe Photoshop, Illustrator).
• Excellent communication and interpersonal skills.
• Ability to work in a fast-paced, deadline-driven environment.

⁠Interested candidates please send your resume to [email protected]

For more information about Zeno Exhibition. Please visit: https://zenoexhibition.com/

Education

A tertiary qualification in project management or business is usually required.

If your first degree is unrelated, a Masters degree may be beneficial, especially if it's accredited by the Chartered Association for Project Management (APM).

Experience

At least two years of relevant experience is usually required.

Hands-on experience can be as valuable as formal qualifications.

Project management experience

A proven track record of successful project management, and at least five years of experience in project management

Adaptability

The ability to respond to change, learn new processes, and re-prioritize work

Data analysis

The ability to analyze data to increase productivity and improve your team's work

Stakeholder management

The ability to lead cross-functional teams and manage complex stakeholder relationships

Risk management

The ability to identify potential risks or challenges that the team can encounter while working on a project

AUXILIARY CONSULTANT (AC), EA LIC: 19C0013
TAN SZE MIN, EA REG No.: R2196393

• Tracking projects status and follow-up with team for the action items
• Incharge of project team timesheets and keep track of billing status
• Assist Project Manager in coordinating issued of sales and ourchase related documents (invocie）
• Responsible of general administration function
• Provide administrative support to teh account department
• Daily update in Goggle Spreadhseet
• Stock taking
• Administrative works about general workers
• Submission for project documents to related parties

• Tracking projects status and follow-up with team for the action items
• Incharge of project team timesheets and keep track of billing status
• Assist Project Manager in coordinating issued of sales and purchase related documents (invoice)
• Responsible of general adminstration fucntion
• Provide administrative support to the accounting department
• Daily update in Google Spreadsheet
• Stock taking
• Administrative works about general workers
• Submission for project documents to related parties

• Organising and managing project teams, including hiring contractors as needed to complete specific tasks
• Ensuring that all costs are within budget and working with team members to identify opportunities for cost savings
• Communicating with clients throughout teh project to ensure they are satisfied with progress and updates
• Developing and implementing project timelines, ensuring that deadlines are met and that tasks are completed on time
• Evaluating project risks and making recommendations for mitigation of identified risks
• Managing the day-to-day operations of projects to ensure they are completed on time and within budget
• Communicating within architects, engineers, contractors, subcontractors, suppliers and other parties involved in the project
• Ensuring that all project documentations is completed according to company standards and laws

Job Responsibilities

• Project coordination and Supervision of ACMV site progress
• Attend site meetings
• Coordination with sub-contractors
• Reporting Project Progress
• any other duties assigned

Job Requirements

• Fresh Graduate Welcome
• Degree in Engineering / Materials
• Working days per week: 6
• Working hours : 0830 - 1730hrs

• Reports directly to QA manager
• Develope Quality Manual
• Conduct in-house quality training
• Lead and guide site staff and contractors to achieve qulaity workmanship
• Conduct preiodic site survelliance with QA Supervisors
• Prepare inspection test plans
• Collate and report non conformanaces
• Attend site consultant/ coordination meetings
• Produce progress reports
• Mininum 4 years experience in related field
• Understands the requirement and criteria of CONQUAS 21; preferbaly with exposure to Quality Marks inspection procedure and preparation
• Conduct defect investigation and identification
• Proficient in Microsoft Office; Excel/ Words/ Powerpoint
• Good command of English
• Selt motivated
• indepentent

The Project Engineer will be responsible for planning, designing, and overseeing the installation of medical devices at various OR, ICU, CSSD and other healthcare project sites. This role requires technical expertise, project management skills, and the ability to collaborate with various stakeholders to ensure successful project execution.

Key Responsibilities:

• Responsible for overall planning and implementation to ensure timely delivery and meet the customer's requirements.
• Coordinate with site supervisors and project managers to ensure project alignment.
• Attend project meetings with the customer, main contractor and other parties.
• Prepare the monthly project documents: project progress report, project claims, minutes of meeting…
• Assist the project manager to collate the necessary project documents: scope of works, project timeline, method of statement, risk assessment, T&C checklists, OMM and material for submission.
• Work with company design engineer to prepare the project drawings for submission (equipment setting out, utility requirement, equipment elevation views…).
• Coordination of the company internal resources (project, service, logistics…) and external parties (sub contractors, main contract) to ensure smooth project implementation.
• Conduct side surveys, technical assessments and feasibility studies.
• Monitor project progress and adjust plans as necessary.
• Ensure compliance with safety regulations, quality standards and company installation requirements.
• Provide technical support and troubleshooting during installation.

Requirements:

• Bachelor’s degree in Engineering, Construction Management, or related field.
• WSQ Workplace Safety and Health Management in Construction Industry - WSHMCI (Formerly known as WSQ SCWWSH, MOM BCSS)
• Experience in project engineering, preferably in the medical device industry.
• Excellent communication and teamwork abilities.
• Strong analytical and problem-solving skills.
• Proficiency in project management software and tools.

The Project Manager will lead and manage medical device installation projects from inception to completion. This role involves strategic planning, resource management, and ensuring that projects are delivered on time, within scope, and within budget.

Key Responsibilities:

• Develop comprehensive project plans, timelines and documentation.
• Maintain strong relationships with all project stakeholders to ensure their needs and expectations are met, fostering collaboration and resolving conflicts promptly.
• Lead the meetings with customers, consultants and main contractor.
• Proactively address and resolve issues that arise during the project to prevent disruptions and ensure smooth progress.
• Manage project contracts and payment claims and ensure that the projects are delivered as per contractual requirements.
• Arrange meetings with company Sales, Factories, Logistics and Management as necessary.
• Monitor project progress and performance.
• Identify and mitigate project risks to protect the company’s interests.
• Ensure compliance with regulatory requirements and industry standards.
• Ensure compliance with company QMS SOP, and company product installation requirements.
• Prepare and present project reports to management.
• Conduct Post-Project review to gather lessons learned to improve future projects.

Requirements:

• Bachelor’s degree in Project Management, Engineering, or related field.
• CSCPM – Construction Safety Course for Project Managers.
• Extensive experience in project management, hospital projects is a plus.
• Strong leadership and organizational skills.
• Excellent communications and negotiation abilities.
• Proficiency in project management software and tools.

· Planning of project and creating of schedule for each individual project

· Planning of budget require for each job

· Listing and balance of budget

· Overall company project management

· Liaise with clients and sub-contractors

· Assigning task to various co-workers and contractors

· Monitor progress of on-going projects and ensure that work is completed on a timely manner

· To supervise on site and ensure work-safe working environment

· Managing of supplies required for each job

· Assist in ad-hoc assignment assign by company

• Tracking projects status and follow-up with team for the action items
• Incharge of project team timesheets and keep track of billing status
• Assist Project Manager in coordinating issued sales and purchase relatede documents (invoice)
• Responsible of general administration function
• Provide administrative support to the accounting department
• Daily update in Google Spreadsheet
• Stock taking
• Adminstrative works about general workers
• Submission for project docuemnts to related parties

• Organising and managing project teams, including hiring contractors as needed to complete specific tasks
• Ensuring that all costs are within budget and working with team members to identify opportunities for cost savings
• Communicating with clients throughout the projectto ensure they are satisfied with progress and updates
• Developing and implementing project timelines, ensuring that deadlines are met and that tasks aere completed on time
• Evaluating project risks and making recommendations or mitigationof identified risks
• Managing the day-to-day operations of projects to ensure they ae completed on time and within budget
• Cummincating with architects, engineers, contractors, subcontractors, suppliers, and other parties involved in the project
• Ensuring that all project documentations are completed according to company standards and laws

• Tracking project status and follow-up with team for the action items
• Incharge of project team timesheets and keep track of billing status
• Assist Project Manager in coordinating issued of sales and purchase related documents (nvoice)
• Responsible of general admnistartion function
• Provide administrative support to teh accounting department
• Daily update in Google Spreadsheet
• Stock taking
• Adminstrative works about general workers
• Submission for project documents to related parties

Job Scope:

• To review project specifications and technical clarifications
• To prepare method statements and check drawing discrepancies
• To carry out project planning, design, material requisition, cost control, project supervision and documentation
• To supervise the construction works and coordinate with client’s representatives, consultants and sub-contractors on technical matters
• To target and ensure timely and smooth progress of works
• To ensure quality of works is achieved and safety & environmental regulations are complied with
• To ensure project activities complied with the Company’s ISO system

Requirements:

• Fresh Graduates are welcome
• Min Diploma in Construction related major.

Jobs Responsibilities:

· Pre-screen, sort and distribute all incoming mails and faxes to appropriate Project Supervisors and identify priority issues that require immediate attention

· Review of all contracts pertaining to the company projects

· Responsible for arranging meeting for the Project Manager, Assistant Project Manager or Site Supervisors

· Handle all documentation of site projects aspects in the company

· Prepare minutes for the meeting, notices, agendas and other correspondences in the department

· General administration support to project team and assisting the project manager in working out the quantities for variations and progress claims

· Undertake any other ad-hoc projects/duties assigned

· Coordination with various project managers and team members

· Tracking of project activities

· Support Project Director/Manager on invoicing and purchasing requests

Requirements

Preferably with some relevant working experience in construction.

· 1 to 3 years’ experience in Project Admin

· Have been in a project coordinator role in construction environment

· Minimum ITE,“O” Level, diploma and “A” Level or equivalent;

· Diploma holders with limited working experience are welcomed.

· Outgoing with good communication and problem-solving skills for engaging with both internal and external parties to support project-related activities.

· Able to work independently and target oriented in a stressful environment.

· Computer-literate & Microsoft Office skills

· Able to start work immediately or within short notice

Roles & Responsibilities

Project Coordinator for CCTV company

Working days:Monday to Friday 9AM-6PM, 5 days

Rest day:Sunday

Location:ANG MO KIO

Job Description

1. Responsible for the successful project management, implementation and handover within specified schedule, budget and meeting client’s expectation, relevant regulatory and safety requirements.

2. Full time supervisions on onsite projects operations and project teams to ensure on-time project delivery according to the planned schedule and within the resources allocated.

3. Liaise with clients, consultants, main-contractors and relevant authorities on design, work progress, quality, safety and schedules.

Job Requirement

-Understand the cost price, prepare quotations, bid for projects, communicate with customers to understand their needs and feedback
-At least a Diploma diploma (Business Administration, Quantity Surveying) is required, have M&E related experience, be proficient in MS Office (Excel, Word, Outlook), understand M&E materials, services and industry terminology, and be able to interpret technical diagrams