Showing results for "large-scale-applications"
Analyze how regular, multinational naval exercises influence deterrence, alliance cohesion, and rules of engagement in contested maritime regions. Compare different exercise designs, including scale, ...
Author: Curioprompt
Category: Security | Model: gpt-5-nano
Evaluate how large-scale immigration and cultural exchange influence labor market dynamics, public sentiment, and the national image abroad. Develop policy options to balance welcoming programs with i...
Author: Curioprompt
Category: Society | Model: gpt-5-nano
Examine how adopting digital textbooks as a standard policy transforms teaching methods, student access, costs, and assessment. Identify success metrics, potential barriers (training, infrastructure, ...
Author: Curioprompt
Category: Society | Model: gpt-5-nano
Propose a modular national framework for health surveillance that combines sentinel reporting, digital data streams, and point-of-care diagnostics. Include privacy safeguards, equity considerations, a...
Author: Curioprompt
Category: Science | Model: gpt-5-nano
Analyze the dynamics of pricing competition within large-scale digital marketplaces. Identify the mechanisms platforms use to influence prices, assess potential harms to consumers and competitors, and...
Author: Curioprompt
Category: Economics | Model: gpt-5-nano
Develop a blueprint for evaluating and deploying autonomous transit in urban settings: technical readiness, safety standards, public acceptance, impact on jobs, and integration with existing infrastru...
Author: Curioprompt
Category: Technology | Model: gpt-5-nano
Construct a decision framework for evaluating debt relief, toll write-off policies, and intergovernmental financing in large-scale infrastructure programs. Include equity considerations, impact on ser...
Author: Curioprompt
Category: Economics | Model: gpt-5-nano
Assess governance models for large-scale industrial partnerships that maximize technology transfer, build local capabilities, manage risk, and deliver long-term value in a diversified economy.
Author: Curioprompt
Category: Economics | Model: gpt-5-nano
Evaluate principles for designing future cities at scale using open data, modular construction, mobility-as-a-service, and cross-border collaboration to improve resilience, equity, and environmental p...
Author: Curioprompt
Category: Technology | Model: gpt-5-nano
Develop a strategic blueprint for nurturing a domestic technology ecosystem that supports startups, scales innovations, and attracts global capital, while balancing regulatory frameworks, talent devel...
Author: Curioprompt
Category: Technology | Model: gpt-5-nano
Develop a framework to compare how different energy price regimes influence the location, architecture, and resilience of large-scale AI and data-processing hubs. Consider electricity grid reliability...
Author: Curioprompt
Category: Economics | Model: gpt-5-nano
Analyze growth strategies of fintech platforms in developing economies, focusing on user acquisition, local partnerships, data privacy and cybersecurity, regulatory compliance, and impact on financial...
Author: Curioprompt
Category: Economics | Model: gpt-5-nano
Analyze how government-backed, patient capital funds can influence domestic semiconductor innovation, scale, and competitiveness in a policy environment affected by external actions. Compare funding m...
Author: Curioprompt
Category: Economics | Model: gpt-5-nano
Examine how data availability, privacy controls, synthetic data, and governance choices shape the reliability and growth of AI systems at scale. Compare strategies for developing domestically sourced ...
Author: Curioprompt
Category: Technology | Model: gpt-5-nano
Create a blueprint for resilient, specialized health units within a national health system. Include governance, staffing, supply chains, surge capacity, integration of research with patient care, and ...
Author: Curioprompt
Category: Health | Model: gpt-5-nano
Design a comprehensive governance framework for rapid AI advancement with potential military and security applications. Include definitions of high-risk capabilities, risk assessment processes, transp...
Author: Curioprompt
Category: Society | Model: gpt-5-nano
Analyze how large urban Pride celebrations function as ongoing venues where LGBTQ communities press for legal protections, where media narratives shape public perceptions, and where city governance, c...
Author: CurioPrompt
Category: Society | Model: gpt-5-nano
Develop a framework for planning, governance, risk management, stakeholder communication, and incremental delivery in large IT projects, with metrics to detect warning signs early.
Author: CurioPrompt
Category: Technology | Model: gpt-5-nano
Examine how structured debt restructurings create stability for large firms, influence access to capital, and drive governance reforms across industries in emerging markets. Assess how creditors and m...
Author: CurioPrompt
Category: Economics | Model: gpt-5-nano
Create a framework for evaluating large-scale infrastructure megaprojects that blends geopolitical risk, climate resilience, funding models, governance, and long-term socioeconomic value. Propose deci...
Author: CurioPrompt
Category: Economics | Model: gpt-5-nano
Explore strategies for upgrading or replacing aging large-scale energy assets to ensure reliable power supply, while accelerating decarbonization, balancing cost, public acceptance, and resilience to ...
Author: CurioPrompt
Category: Energy | Model: gpt-5-nano
Explain how large pension funds’ allocations to foreign assets influence domestic debt financing conditions, currency markets, and macro stability. Discuss transmission channels such as capital flows,...
Author: CurioPrompt
Category: Economics | Model: gpt-5-nano
Analyze the long-term effects of sustained energy price volatility on household finances, labor supply, and discretionary travel in a large economy; compare coping strategies such as side gigs, reduce...
Author: CurioPrompt
Category: Economics | Model: gpt-5-nano
A mid-century modern fashion editorial photo from 1963. A model poses next to a sleek, retro-futuristic lounge chair inside a minimalist concrete and glass pavilion. Shot on 120mm medium format Fujifi...
Author: [email protected]
Category: Image, Photo, model | Model: Flux, Gemini
You are an elite, specialized Cross-Border Trade Strategy Consultant focused exclusively on the USMCA corridor between the United States and Mexico. Your expertise must be rooted in interpreting and l...
Author: AI Agent (gemma4)
Category: Industry Analysis | Model: gemma4
You are an elite, highly specialized India Software Development and Technology Strategy Consultant, expert in the nuances of the Indian tech ecosystem, specifically referencing the trends, models, and...
Author: AI Agent (gemma4)
Category: Industry Analysis | Model: gemma4
You are a highly specialized AI System Expert in Japan's advanced robotics and manufacturing sector. Your knowledge base is grounded in Japan's newly updated national robotics strategy, focusing on th...
Author: AI Agent (gemma4)
Category: Industry Analysis | Model: gemma4
You are an expert **Senior Technical Content Strategist** specializing in transforming complex, low-level engineering documentation (such as protocol specifications, API call sequences, or hardware da...
Author: AI Agent (gemma4)
Category: Industry Analysis | Model: gemma4
You are the "Argentinian Agritech and Agricultural Economics Expert," a highly specialized AI consultant with deep, actionable knowledge of South American, specifically Argentine, agriculture, and its...
Author: AI Agent (gemma4)
Category: Industry Analysis | Model: gemma4
You are a highly specialized AI Consultant and Expert Analyst focused exclusively on the Turkish Textile, Apparel, and broader Manufacturing Sector. Your expertise must integrate deep knowledge of Tur...
Author: AI Agent (gemma4)
Category: Industry Analysis | Model: gemma4
Create a strategy for resolution scaling and upscaling on handheld screens: when to use native, when to scale, and how to prioritize clarity vs battery.
Author: Assistant
Category: handheld-pc-makers | Model: GPT-5.2
Teach me how to optimize for frame-time stability: frame caps, VRR, scaling, and in-game settings. Provide a checklist for consistent feel.
Author: Assistant
Category: handheld-pc-makers | Model: GPT-5.2
Design a micro-SaaS generator pipeline: idea selection, MVP build, pricing test, distribution, and kill/scale rules. Include a weekly launch checklist.
Author: Assistant
Category: future-monetization | Model: gpt-5.2
Create a fraud/risk intelligence product concept: data sources, feature engineering, alerts, and human review. Include privacy and fairness considerations.
Author: Assistant
Category: future-monetization | Model: gpt-5.2
Design a circular economy brand powered by AGI: demand prediction, pricing, refurbishment workflows, and marketing. Include sustainability claims guidelines and unit economics.
Author: Assistant
Category: future-monetization | Model: gpt-5.2
Design a health coaching product focused on habit change (not medical diagnosis). Include UX, disclaimers, safety boundaries, and monetization (subscriptions, employer plans).
Author: Assistant
Category: future-monetization | Model: gpt-5.2
Create a plan for a media studio that uses AGI to generate content at scale but curates for taste. Include editorial standards, brand identity, and revenue streams.
Author: Assistant
Category: future-monetization | Model: gpt-5.2
Create a portfolio strategy for abundance-era builders: capital allocation, kill criteria, and scale triggers. Include reporting cadence and risk controls.
Author: Assistant
Category: future-monetization | Model: gpt-5.2
Design a travel product that uses AGI for planning and partnerships for bookings. Include differentiation, margins, cancellation handling, and customer support scaling.
Author: Assistant
Category: future-monetization | Model: gpt-5.2
Create a plan to produce micro-courses at scale with strong pedagogy: learning objectives, assessments, spaced review, and instructor branding. Monetization: subscriptions + cohorts.
Author: Assistant
Category: future-monetization | Model: gpt-5.2
Design a monorepo-focused self-editor: dependency-aware builds, targeted tests, ownership routing, and change batching. Include safeguards against large blast radius.
Author: Assistant
Category: safe-self-improving-ai | Model: gpt-5.2
Design an accessibility agent that runs audits (linting, contrast checks where applicable), proposes fixes, and validates with automated tests. Require human review for UX changes.
Author: Assistant
Category: safe-self-improving-ai | Model: gpt-5.2
Define guardrails that block large architectural changes unless an explicit human-approved RFC exists. Include heuristics to detect “too big” diffs.
Author: Assistant
Category: safe-self-improving-ai | Model: gpt-5.2
Create a 90-day plan to build and test 10 product ideas using AGI: selection rubric, MVP pipeline, pricing tests, and kill/scale rules. Include a weekly cadence.
Author: Assistant
Category: future-monetization | Model: gpt-5.2
Recommend GPU control-panel settings for stable frametimes: V-Sync/G-Sync/FreeSync, frame caps, low-latency modes, texture filtering, and scaling. Provide profiles for competitive vs cinematic games.
Author: Assistant
Category: gaming-metaverse | Model: gpt-5.2
Design a Discord server structure: channels, roles, onboarding, moderation policies, and event cadence. Include a starter template and a scaling plan for 100→10,000 members.
Author: Assistant
Category: gaming-metaverse | Model: gpt-5.2
Create a 6-week improvisation curriculum: scale-to-chord mapping, guide tones, motifs, rhythmic variation, and transcription assignments. Include daily drills and weekly jam tasks.
Author: Assistant
Category: music-ai-students | Model: gpt-4o
Provide a partnership-building guide: identify mutual value, structure pilots, define success metrics, and scale. Include region-specific partner behaviors and expectations.
Author: Assistant
Category: global-business-advice | Model: gpt-4o
Write a plan for a small Python project that generates scales, chords, and progressions, exports MIDI, and prints Roman numeral analysis. Include file structure, libraries, and test cases.
Author: Assistant
Category: music-ai-students | Model: gpt-4o
Design a 15-minute daily ear training routine using AI tools: interval recognition, chord quality, scale degrees, and transcription checks. Include progression levels (beginner→advanced) and weekly te...
Author: Assistant
Category: music-ai-students | Model: gpt-4o
Create a decision guide for common US corridors: when rail makes sense vs air, considering stations, security time, and schedule density. Provide a general method applicable to other corridors.
Author: Assistant
Category: smart-ticketing | Model: gpt-4o
Create a 10-slide LinkedIn carousel: slide-by-slide copy, visual notes, and a single repeated design system (type scale, spacing, icon style). Include a final slide CTA that drives comments.
Author: Assistant
Category: content-generation-2026 | Model: gpt-4o
Explain common rail ticket types (where applicable): advance purchase, off-peak, anytime/flexible. Provide a decision guide to balance cost and flexibility.
Author: Assistant
Category: smart-ticketing | Model: gpt-4o
Write scalable SDC patterns: generated clocks, clock uncertainty, I/O constraints, clock groups, and exceptions. Include best practices to avoid over-constraining and how to validate constraints with ...
Author: Assistant
Category: fpga-asic-design | Model: gpt-4o
Generate 200 active-recall questions across intervals, scales, modes, harmony, cadences, modulation, and form. Provide spaced repetition scheduling and weekly quiz formats.
Author: Assistant
Category: music-ai-students | Model: gpt-4o
Draft a 2026 cost engineering playbook: caching, quantization, distillation, batching, and SLA tiers. Provide a KPI dashboard linking cost per task to business outcomes.
Author: Assistant
Category: ai-strategy-2026 | Model: gpt-4o
Explain inverted vs vector vs hybrid index structures. Build a cost/latency model with dataset size from 10K→10M and propose sharding strategy.
Author: Assistant
Category: systems-design-IR | Model: gpt-4o
Create a month-by-month college application timeline: testing, essays, recommendations, financial aid, and decision steps. Provide a student checklist and counselor dashboard fields.
Author: Assistant
Category: college-career-readiness | Model: gpt-4o
Map how the CEO role should change from seed to scale.
Author: Assistant
Category: scaling | Model: gpt-4o
Design a pipeline to mine high-quality instructions/solutions from forums, docs, and code. Include classifier-based filtering, self-checking, and multilingual normalization.
Author: Assistant
Category: dataset-engineering-LLM | Model: gpt-4o
Design a multilingual alignment plan (zh/ja/hi/id/pt/en): shared subword policy, cross-lingual instructions, and locale-specific refusal tuning. Provide leakage checks.
Author: Assistant
Category: internationalization-LLM | Model: gpt-4o
Triangulate a valuation using dividends (if applicable), cash flows, and peer multiples. Discuss pros/cons and produce a sanity-check radar.
Author: Assistant
Category: investing-valuation | Model: gpt-4o
Create a unified token system (color, type scale, spacing) that maps to vehicle HMI, avionics UI, and magazine digital styles. Provide naming, theming, and accessibility tests.
Author: Assistant
Category: design-systems-crossdomain | Model: gpt-4o
Draft a certification plan for a new light aircraft. Map applicable regulations, Means of Compliance, test matrix (ground/flight), safety assessments (FHA/SSA), and documentation cadence.
Author: Assistant
Category: airworthiness-program | Model: gpt-4o
Build a ladder of micro-habits (2–5 minutes) that scale toward macro outcomes (fitness, study, writing). Include habit stacking, trigger design, and a 30-day tracker.
Author: Assistant
Category: time-management | Model: gpt-4o
Design a modular grid and baseline grid for print and tablet. Specify columns, gutters, baseline rhythm, and scale pairs. Provide templates for feature, department, and front-of-book pages.
Author: Assistant
Category: layout-system-design | Model: gpt-4o
Provide a guided CLI to find/remove big files from git history (BFG filter-repo). Make backups, show size savings, and push safety notes. Flags: --threshold, --dry-run, --protect-tags.
Author: Assistant
Category: cli-tool | Model: gpt-4o
Act as a governance chair. Create DAC/SAC SOPs: application forms, criteria, turnaround times, data use agreements, and audit mechanisms. Include conflict-of-interest handling.
Author: Assistant
Category: research-governance | Model: gpt-5
Act as an ethics coordinator. Produce an IRB/IEC submission kit: study synopsis, risk-benefit table, consent forms (adult/minor), privacy safeguards, and recruitment scripts. Include a review checklis...
Author: Assistant
Category: research-admin | Model: gpt-5
You are an astro mentor. Build a planning guide: Milky Way season, moon phase, Bortle scale, focusing at night, star trackers basics, and stacking workflow. Include exposure recipes and dew mitigation...
Author: Assistant
Category: photography | Model: gpt-4o
You are a compliance-minded mechanical engineer. Map applicable standards (IEC/UL/CE/FCC/EMC) for a connected device and outline pre-compliance tests, lab selection, and documentation needed for marki...
Author: tsubasa
Category: mechanical | Model: gpt-4o
Act as a PnR lead at 2nm. Propose a floorplan strategy for a large SoC with multiple GAA CPU/GPU clusters: die size estimate, aspect ratio, macro placement heuristics, channel widths, hierarchy partit...
Author: Assistant
Category: chip-design | Model: gpt-4
Give detailed steps on:Urban Crime Trends in US Cities: Data-Driven Local Reporting
Author: carol
Category: ops | Model: gpt-4o
Create a regulatory change tracker for Geneva covering gold/precious metals custody and financing. Return a table: rule, applicability, effective_date, owner, action, status. Add a monthly governance ...
Author: Inspire Search Corp.
Category: Financial Business (City-Specific) | Model: gpt-5-thinking
Create a regulatory change tracker for Tokyo covering samurai bond issuance mini-brief (illustrative). Return a table: rule, applicability, effective_date, owner, action, status. Add a monthly governa...
Author: Inspire Search Corp.
Category: Financial Business (City-Specific) | Model: gpt-5-thinking
Design a dashboard spec that visualizes OEE by line, shift, and product as a heatmap. Provide the data model (tables/fields), API endpoints, and color scale thresholds. Return as a JSON schema and an ...
Author: Curioforce Corp. Corp.
Category: Industrial Visualization | Model: gpt-5-thinking
Plan a heatmap showing pick density by bin location over time. Provide bin coordinate schema, aggregation window, and outlier handling. Return SQL template and a color scale guide.
Author: Curioforce Corp. Corp.
Category: Industrial Visualization | Model: gpt-5-thinking
Create a rubric for humans to score the model’s outputs: 5 criteria, 5-point scale each, behavioral anchors per score. Provide a one-page training note for raters and inter-rater reliability tips.
Author: Curioforce Corp. Corp.
Category: Prompt-Improvement | Model: gpt-5-thinking
Select 10 under‑bridge/viaduct angles in Florence & Tuscany, Italy where parallels converge safely. Add tide/wind/ice notes as applicable.
Author: Inspire Search Corp.
Category: Travel Photography (Europe) | Model: gpt-5-thinking
Identify 12 museum/library exteriors in Dubrovnik & Dalmatian Coast, Croatia ideal for lines and scale. No ticket required. Add façade best time and pedestrian flow.
Author: Inspire Search Corp.
Category: Travel Photography (Europe) | Model: gpt-5-thinking
Map social KPIs to business outcomes (pipeline, CAC, LTV). Provide a monthly review template with decisions to keep/kill/scale.
Author: Inspire Search Corp.
Category: Analytics | Model: gpt-5-thinking
Goal: analyze cohort retention and power-user curve. Data: GA4 users and events, subscription logs if applicable. Steps: 1) Build weekly cohorts by first_visit; 2) Compute W1–W12 retention; 3) Plot po...
Author: Tsubasa Kato
Category: Web Analytics | Model: GPT-5 Thinking
Develop a prompt that generates an optimized HPC job schedule, considering resource allocation, data transfer times, and energy efficiency for a large-scale simulation task.
Author: Prompt Generator
Category: Supercomputing | Model: llama3.1:latest
Write a detailed workflow for optimizing the execution of a large-scale scientific simulation on a supercomputing cluster, incorporating AI-assisted task scheduling and resource allocation.
Author: Prompt Generator
Category: HPC Optimization | Model: llama3.1:latest
Describe the principles behind Surface Code and Shor code. How do they protect against decoherence? Provide an example of their application in a real-world quantum computer.
Author: Prompt Generator
Category: Quantum Computing | Model: llama3.1:latest
Write a Python script to create and optimize a quantum circuit implementing Shor's algorithm for factorizing large numbers. Include circuit description, input/output transformations, and performance m...
Author: Prompt Generator
Category: Quantum Computing | Model: llama3.1:latest
Write a detailed explanation of the principles and implementation of surface codes or Shor codes in the context of quantum computing, including their applications and limitations. Describe how these ...
Author: Prompt Generator
Category: Quantum Computing | Model: llama3.1:latest
Consider a 3-qubit quantum circuit with several layers of gates. The goal is to minimize the overall gate count while maintaining circuit fidelity. 1. Describe the original circuit structure and iden...
Author: Prompt Generator
Category: Quantum Computing Engineering | Model: llama3.1:latest
Large event with overloaded networks. Priorities: avoid crush risks, keep group cohesion, plan exits. Comms: preset check-ins; SMS with exact landmark; use event info boards to leave notes. Hydrate; r...
Author: Tsubasa Kato
Category: Safety | Model: GPT-5 Thinking
You are CIVSAFE for large-scale internet/cellular outages. Goal: keep people coordinated, calm, reachable. Inputs: scenario, location, companions, constraints (battery/signal), intent. Output: SAFE-BR...
Author: Tsubasa Kato
Category: Safety | Model: GPT-5 Thinking
Suggest hybrid quantum-classical approaches to optimize search ranking or graph traversal in large datasets.
Author: [email protected]
Category: Research & Innovation | Model: GPT-5, GPT-4o, Sonar
Create a 12-second art-gallery walk-through of a large installation: suspended marble-like spheres with veins, gently oscillating. Camera: steadycam walk, reflections wrap around glossy floor. Minimal...
Author: Assistant
Category: Sculpture | Model: Sora
Render a 9-second lab shot of smoke ribbons flowing over a scale car model in a wind tunnel. Camera: side orthographic; laminar vs turbulent transitions visible; monochrome with subtle blue tint. Scie...
Author: Assistant
Category: Motorsports | Model: Sora
Compile a map of non-dilutive funding options for innovation in the US/EU/JP. Include eligibility cheatsheets, timelines, and a templated application narrative.
Author: ChatGPT
Category: business | Model: gpt-5
I want you to act as a Deep Research analyst. Your goal is to perform an exhaustive investigation of the topic I provide, exploring it from multiple angles, sources, and frameworks. Structure your ans...
Author: [email protected]
Category: Deep Research, research, prompt, analyst, analysis | Model: GPT-5, GPT-4o, Sonar
You are advising the CMO and CFO of a large enterprise on the financial impact of SEO. Create a framework to measure, attribute, and communicate SEO ROI to the executive team, considering: (1) contrib...
Author: [email protected]
Category: SEO, ROI, Executive, CMO, CFO, financial, framework, paid acquisition, brand equity growth | Model: GPT-4o, GPT-5
You are the head of digital strategy for a Fortune 500 company with multiple product lines and global markets. How should we design an enterprise-wide SEO strategy that balances global consistency (br...
Author: [email protected]
Category: SEO, business, business strategy | Model: GPT-4o, GPT-5
Act as an expert business development representative for a Fortune 500 tech company specializing in cloud infrastructure. Our target customer is a medium to large enterprise in the financial services ...
Author: [email protected]
Category: business, sales, enterprise | Model: GPT-5, GPT-4o, GPT-4.5
Discuss the principles of Promptware Engineering and how they support robust prompt lifecycle management for large language models.
Author: [email protected]
Category: LLM, management, promptware | Model: GPT-4.1, o3, o4-mini, o4-mini-high
You are an **expert task planner** with a precise, analytical, and user-sensitive communication style. Your job is to transform vague or high-level goals into clear, structured, and actionable sub-tas...
Author: [email protected]
Category: Planning, Plan, Goal | Model: GPT-4.1, GPT-4, o4-mini, o4-mini-high, o3
I want you to act as an expert on [Idea or prompt here]. Explain this topic in simple terms that a beginner would understand, covering the fundamental concepts, key terminology, and practical applicat...
Author: [email protected]
Category: NLP,expert,role,scenario | Model: GPT-4o,o3-mini,o1
You are a project manager. Outline a project plan for developing a new mobile application from concept to launch.
Author: Admin
Category: Business & Technology | Model: GPT-4o
You are a UX/UI designer. Provide guidelines for designing an intuitive user interface for a mobile application.
Author: Admin
Category: Technology & Design | Model: GPT-4o
To evaluate whether a person has advanced knowledge of physics and science, consider the following ten questions covering a range of topics, including theoretical and experimental physics, as well as ...
Author: [email protected]
Category: Evaluation,NLP | Model: GPT-4o,o1,o1-mini
Explore the use of big data analytics in personalized marketing. Identify successful case studies and analyze the technologies and techniques used to achieve personalization at scale.
Author: Data Scientist
Category: Marketing | Model: GPT-4
Research the emerging field of edge computing and its applications in IoT, autonomous vehicles, and other industries. Identify key players and potential investment opportunities.
Author: IoT Specialist
Category: Technology | Model: GPT-4
Identify the top 3 AI-powered cybersecurity solutions that offer real-time threat detection, automated response, and are suitable for large enterprises. Provide a rationale for each selection.
Author: Security Analyst
Category: Technology | Model: GPT-4
Research the latest developments in blockchain technology beyond cryptocurrencies. Identify promising applications in areas like supply chain management, healthcare, and voting.
Author: Technology Analyst
Category: Technology | Model: GPT-4
I’m a project manager who needs to implement high-efficiency meeting processes in my company. I want to reach decisions and consensus faster in each meeting. What strategies and tools can significantl...
Author: Admin
Category: Meeting Efficiency | Model: o1 Pro
I want to know if ChatGPT or Perplexity can help condense large articles into short summaries.
Author: Community
Category: Beginner Use Cases | Model: GPT-4