Semester 5 Timetable & Elective Planner

Day Name 8:00:AM-8:55:AM 9:00:AM-9:55:AM 10:00:AM-10:55:AM 11:00:AM-11:55:AM 12:00:PM-12:55:PM 2:00:PM-2:55:PM 3:00:PM-3:55:PM 4:00:PM-4:55:PM 5:00:PM-5:55:PM
Mon     CS31007
(SB+ DM) 		  CS31003
(AD+ AH) 		CS39001
(SB+ IS+ DM) 		 
Tue     CS31003
(AD+ AH) 		CS31003
(AD+ AH) 		  CS39003
(AH+ AD) 		 
Wed CS31007
(DM+ SB) 		CS31007
(DM+ SB) 		      CS39001
(DM+ SB+ IS) 		 
Thur     CS31007
(DM+ SB) 		      CS31005
(PD+ AC) 		CS31005
(AC+ PD) 		 
Fri           CS31005
(PD+ AC) 		CS31005
(PD+ AC) 		   

Semester 5 Core Subjects Legend

CS31003 - COMPILERS
Aritra Hazra, Abhijit Das
CS39003 - COMPILERS LAB.
Aritra Hazra, Abhijit Das
CS31005 - ALGORITHMS -II
Abhranil Chatterjee, Palash Dey
CS31007 - COMP. ORG. & ARCH.
Sarani Bhattacharya, Debdeep Mukhopadhyay
CS39001 - COMP. ORG. LAB.
Sarani Bhattacharya, Debdeep Mukhopadhyay,
Indranil Sengupta, Shuvodip Maitra

Elective Subslot Planner

Selected: 0
Base Slot Subtype Hrs/Wk Timetable Schedule Actions
Slot A A2 2 hours Mon 8:00 AM - 9:55 AM
A3 3 hours Mon 8:00 AM - 9:55 AM  |  Tue 12:00 PM - 12:55 PM
Slot B B2 2 hours Tue 8:00 AM - 9:55 AM
B3 3 hours Mon 11:00 AM - 11:55 AM  |  Tue 8:00 AM - 9:55 AM
Slot E E2 2 hours Fri 9:00 AM - 10:55 AM
E3 3 hours Wed 12:00 PM - 12:55 PM  |  Thu 11:00 AM - 11:55 AM  |  Fri 9:00 AM - 9:55 AM
E4 4 hours Wed 12:00 PM - 12:55 PM  |  Thu 11:00 AM - 11:55 AM  |  Fri 9:00 AM - 10:55 AM
Slot F F2 2 hours Fri 11:00 AM - 12:55 PM
F3 3 hours Wed 10:00 AM - 10:55 AM  |  Thu 9:00 AM - 9:55 AM  |  Fri 11:00 AM - 11:55 AM
F4 4 hours Wed 10:00 AM - 10:55 AM  |  Thu 9:00 AM - 9:55 AM  |  Fri 11:00 AM - 12:55 PM
Slot G G2 2 hours Wed 11:00 AM - 11:55 AM  |  Thu 12:00 PM - 12:55 PM
G3 3 hours Wed 11:00 AM - 11:55 AM  |  Thu 12:00 PM - 12:55 PM  |  Fri 8:00 AM - 8:55 AM
Slot S S2 2 hours Mon 5:00 PM - 5:55 PM  |  Thu 5:00 PM - 5:55 PM
S3 3 hours Mon 5:00 PM - 5:55 PM  |  Thu 5:00 PM - 5:55 PM  |  Fri 5:00 PM - 5:55 PM

Depth Elective Subjects Directory

Select Code Subject Name Faculty Name LTP Crd Slot Room / Status Pre-requisites In Timetable
CS40003 DATA ANALYTICS — 3-0-0 3 — Not Offered 1 - CS11001 , 2 - CS19001, 3 - MA20104 , Clause - AND No
CS40017 OBJECT ORIENTED SYSTEM DESIGN — 3-0-0 3 — Not Offered — No
CS40019 IMAGE PROCESSING Rajat Subhra Chakraborty 3-0-0 3 B31, B32, B33 Allocated — Yes
CS40023 ADVANCED COMPUTER ARCHITECTURE — 3-1-0 4 — Not Offered — No
CS40025 VLSI SYSTEM DESIGN — 3-1-0 4 — Not Offered — No
CS40029 GRAPH THEORY — 3-1-0 4 — Not Offered — No
CS41001 THEORY OF COMPUTATION — 3-1-0 4 — Not Offered — No
CS41103 COMPUTATIONAL COMPLEXITY — 3-1-0 4 — Not Offered — No
CS60004 HARDWARE SECURITY — 3-0-0 3 — Offered (No Allocation) — No
CS60005 FOUNDATIONS OF COMPUTING SCIENCE Debaditya Roy,Pawan Goyal 3-1-0 4 C41, C42, C43, C44 NC141,NC141 — Yes
CS60009 SMARTPHONE COMPUTING & APPLICATION Bivas Mitra 3-0-0 3 E31, E32, E33 Allocated — Yes
CS60011 LOGICS FOR COMPUTER SCIENCE — 3-1-0 4 — Not Offered — No
CS60017 SOCIAL COMPUTING Animesh Mukherjee,Somak Aditya 3-0-0 3 V31, V32, V33 Allocated — Yes
CS60018 STATISTICAL LEARNING THEORY Pabitra Mitra 3-0-0 3 G31, G32, G33 NR213 — Yes
CS60019 PERFORMANCE MODELING OF COMPUTER NETWORKS — 3-0-0 3 — Not Offered — No
CS60021 SCALABLE DATA MINING Sourangshu Bhattacharya,Ritesh Sarkhel 3-0-0 3 G31, G32, G33 NR413,NR413 — Yes
CS60023 APPROXIMATION AND ONLINE ALGORITHMS Palash Dey,Sudeshna Kolay 3-0-0 3 B31, B32, B33 Allocated 1 - CS31005 , 2 - CS21001 , Clause - OR Yes
CS60025 ALGORITHMIC GAME THEORY Somindu Chaya Ramanna 3-0-0 3 V31, V32, V33 Allocated — Yes
CS60027 PARALLEL ALGORITHMS — 3-0-0 3 — Not Offered 1 - CS31007 , 2 - CS21003 , Clause - AND No
CS60029 RANDOMIZED ALGORITHM DESIGN Somindu Chaya Ramanna,Abhranil Chatterjee 3-0-0 3 F31, F32, F33 Allocated — Yes
CS60038 ADVANCES IN OPERATING SYSTEMS DESIGN Arobinda Gupta 3-0-0 3 G31, G32, G33 Allocated — Yes
CS60045 ARTIFICIAL INTELLIGENCE Chittaranjan Mandal 3-0-0 3 A31, A32, A33 NR122 1 - CS21003 , 2 - CS29003, 3 - CS21103 , Clause - OR Yes
CS60047 ADVANCED GRAPH THEORY Arobinda Gupta,Bivas Mitra 3-1-0 4 V41, V42, V43, V44 Allocated — Yes
CS60050 MACHINE LEARNING Ayan Chaudhury,Abir Das 3-0-0 3 G31, G32, G33 NC321,NC322,NC321,NC322 — Yes
CS60055 UBIQUITOUS COMPUTING Sandip Chakraborty 3-0-0 3 B31, B32, B33 Allocated — Yes
CS60059 OBJECT ORIENTED SYSTEMS Jibesh Patra 3-0-0 3 A31, A32, A33 NC344 — Yes
CS60065 CRYPTOGRAPHY AND NETWORK SECURITY Monosij Maitra 3-1-0 4 V41, V42, V43, V44 Allocated — Yes
CS60067 VLSI SYSTEM DESIGN — 3-1-0 4 — Not Offered 1 - CS21002 , 2 - EC31003, 3 - EE21208 , Clause - OR No
CS60071 ALGORITHMS FOR BIOINFORMATICS Jayanta Mukhopadhyay 3-0-0 3 A31, A32, A33 Allocated — Yes
CS60073 ADVANCED MACHINE LEARNING Debaditya Roy 3-0-0 3 G31, G32, G33 Allocated — Yes
CS60075 NATURAL LANGUAGE PROCESSING Somak Aditya 3-0-0 3 F31, F32, F33 NR411 — Yes
CS60077 REINFORCEMENT LEARNING Soumyajit Dey,Pralay Mitra 3-0-0 3 E31, E32, E33 Allocated — Yes
CS60081 USABLE SECURITY AND PRIVACY Shamik Sural 3-0-0 3 B31, B32, B33 Allocated — Yes
CS60083 PARAMETERIZED ALGORITHMS — 3-0-0 3 — Not Offered — No
CS60086 SELECTED TOPICS IN ALGORITHMS — 3-0-0 3 — Offered (No Allocation) — No
CS60087 EMBEDDED SYSTEMS — 3-1-0 4 — Not Offered 1 - CS31007 , 2 - CS30002, 3 - CS31001 , Clause - OR No
CS60089 TESTING AND VERIFICATION OF CIRCUITS — 3-1-0 4 — Not Offered 1 - EE21208 , 2 - CS21202, 3 - EC21202 , Clause - OR No
CS60092 INFORMATION RETRIEVAL Niloy Ganguly,Pabitra Mitra 3-0-0 3 B31, B32, B33 NC121,NC121 — Yes
CS60111 GEOGRAPHICAL INFORMATION SYSTEM Soumya Kanti Ghosh 3-0-0 3 A31, A32, A33 Allocated — Yes
CS60113 ADVANCED DATABASE SYSTEMS Sudip Misra,Krothapalli Sreenivasa Rao 4-0-0 4 V41, V42, V43, V44 Allocated — Yes
CS60119 WIRELESS ADHOC & SENSOR NETWORKS Krothapalli Sreenivasa Rao 4-0-0 4 E41, E42, E43, E44 Allocated — Yes
CS60203 DESIGN OPTIMIZATION OF COMPUTING SYSTEMS Mainack Mondal,Sandip Chakraborty 3-0-0 3 A31, A32, A33 Allocated — Yes
CS60218 FOUNDATIONS OF AI REASONING — 3-0-0 3 — Offered (No Allocation) — No
CS61061 DATA ANALYTICS Abhijnan Chakraborty 3-1-0 4 F41, F42, F43, F44 NR423 — Yes
CS61063 COMPUTATIONAL FOUNDATIONS OF CYBER PHYSICAL SYSTEMS — 3-1-0 4 — Not Offered — No
CS61064 HIGH PERFORMANCE PARALLEL PROGRAMMING Pralay Mitra,Soumyajit Dey 3-1-0 4 F41, F42, F43, F44 Allocated — Yes
CS61065 THEORY AND APPLICATIONS OF BLOCKCHAIN Jibesh Patra,Satrajit Ghosh 3-1-0 4 F41, F42, F43, F44 Allocated — Yes
CS61066 ARCHITECTURE AND PROTOCOLS FOR INTERNET OF THINGS Sudip Misra 3-1-0 4 E41, E42, E43, E44 Allocated — Yes
EC60083 INFORMATION THEORY & CODING TECHNIQUES — 3-0-0 3 — Not Offered 1 - EC21004 , 2 - EE21101 , Clause - OR No
EC60095 ARCHITECTURAL DESIGN OF IC'S — 3-0-0 3 — Not Offered — No
EE60011 CONTROL THEORY — 3-1-0 4 — Not Offered — No
EE60013 ESTIMATION OF SIGNALS AND SYSTEMS — 3-1-0 4 — Not Offered — No

Breadth Elective Subjects Directory

Select Code Subject Name Faculty / Dept LTP Crd Slot Room / Status Pre-requisites
EP60007 TECHNO-ENTREPRENEURIAL LEADERSHIP Bhaskar Bhowmick 3-0-0 3 D31, D32, D33 NC321 —
EP60021 ENGINEERING B-PLAN DEVELOPMENT - 1 Ram Babu Roy 2-1-0 3 F31, F32, F33 NC441 —
EP60025 SPECIAL TOPICS IN ENTREPRENEURSHIP Mamoni Banerjee 2-1-0 3 B31, B32, B33 NR311 —
EP60029 SMALL BUSINESS DEVELOPMENT Prabha Bhola 2-0-1 3 G31, G32, G33 NC142 —
EP60038 ENTREPRENEURSHIP IN SOCIAL SECTOR Mamoni Banerjee 2-1-0 3 E31, E32, E33 NC334 —
EP60042 ENGINEERING DESIGN PROCESS Aviru Kumar Basu 3-0-0 3 C31, C32, C33 NR421 —
EP60044 FRUGAL ENGINEERING Biswabandhu Jana 3-0-0 3 E31, E32, E33 NC343 —
EP60201 DIGITAL ENTREPRENEURSHIP Mrigank Sharad 3-0-0 3 G31, G32, G33 NR421 —
EP61201 ENTREPRENEURSHIP ESSENTIALS Manoj Kumar Mondal 3-1-0 4 B31, B32, B33, S32 NR122 —
EP61203 FINANCIAL AND LEGAL ASPECTS OF NEW TECHNOLOGY VENTURES Titas Bhattacharjee (Rudra) 3-1-0 4 D41, D42, D43, D44 NR323 —
EP61205 INNOVATION IN PRODUCT DEVELOPMENT PROCESS Basab Chakraborty 3-1-0 4 F41, F42, F43, F44 NR424,NR424 —
HS20002 GENERAL PSYCHOLOGY Rishabh Rai 3-1-0 4 D41, D42, D43, D44 NR321 —
HS20004 POSITIVE PSYCHOLOGY Rabindra Kumar Pradhan 3-1-0 4 D41, D42, D43, D44 NR412 —
HS20016 ENVIRONMENTAL HUMANITIES Jenia Mukherjee 3-0-0 3 D31, D32, D33 Allocated —
HS20018 SANSKRIT AND HERITAGE Anuradha Choudry 3-0-0 3 B31, B32, B33 NC321 —
HS21201 ECONOMICS Krittika Banerjee,Sunandan Ghosh 3-1-0 4 D41, D42, D43, D44 NC223,NR324,NC223,NR324 —
HS21221 INTRODUCTION TO SOCIAL PSYCHOLOGY Mahima Raina 3-1-0 4 D41, D42, D43, D44 NC413 —
HS21233 INTRODUCTION TO LANGUAGE DOCUMENTATION Bornini Lahiri 2-2-0 4 D41, D42, D43, D44 Allocated —
HS21235 INDIAN SOCIOLOGY Amrita Sen 3-1-0 4 D41, D42, D43, D44 NC414 —
HS30037 PETROLEUM ECONOMICS AND MANAGEMENT Anwesha Aditya 3-0-0 3 B31, B32, B33 NC244 —
HS30054 SOCIOLOGY OF RESOURCE MANAGEMENT Archana Patnaik 3-0-0 3 D31, D32, D33 Allocated —
HS30066 VISUAL COMMUNICATION Priyadarshi Patnaik 3-0-0 3 G31, G32, G33 NR124 —
HS30074 SCIENCE AND HUMANISM Jenia Mukherjee 3-0-0 3 G31, G32, G33 NC313 —
HS30075 MODERNISATION AND CREATIVE COMMUNICATION Saswat Samay Das 3-0-0 3 G31, G32, G33 NC224 —
HS31076 INTRODUCTION TO LANGUAGE AND LINGUISTICS Dripta Piplai (Mondal) 3-1-0 4 D41, D42, D43, D44 NR421 —
HS32202 INTRODUCTION TO YOGA Seema Singh 2-0-2 3 D41, D42, D43, D44 Allocated —
HS51637 SOCIETY SCIENCE AND TECHNOLOGY Archana Patnaik 3-0-0 3 G31, G32, G33 NC331 —
HS60005 INTRODUCTION TO INDIAN PSYCHOLOGY Anuradha Choudry 3-0-0 3 G31, G32, G33 NC413 —
HS60063 BUSINESS ENVIORNMENT AND POLICY Mantu Kumar Mahalik 3-0-0 3 B31, B32, B33 LANGUAGE LAB-II (JCB LAB COMPLEX) —
HS60084 URBAN SOCIOLOGY Amrita Sen 3-0-0 3 G31, G32, G33 NC234 —
HS60257 BUSINESS ECONOMICS Kishor Goswami 3-0-0 3 D31, D32, D33 LANGUAGE LAB - III (JCB LAB COMPLEX) —
HS61203 INTRODUCTION TO LINGUISTIC MORPHOLOGY Bornini Lahiri,Dripta Piplai (Mondal) 3-1-0 4 G31, G32, G33, S31 NC223,NC223,NC223 —
RX60012 SCIENCE OF HAPPINESS AND WELL-BEING Rajlakshmi Guha 2-0-2 3 D41, D42, D43, D44 F116 —
RX60016 ECOLOGY, RESILIENCE AND WELLBEING Pritha Datta 3-0-0 3 G31, G32, G33 NR214 —
RX61003 ORGANIZATIONAL COMMUNICATION Atasi Mohanty 3-1-0 4 D41, D42, D43, D44 NC222 —
AI60003 ARTIFICIAL INTELLIGENCE FOR ECONOMICS Dripto Bakshi 3-0-0 3 G31, G32, G33 NR321 —
AI60202 ADVANCED LEARNING PARADIGMS FOR ARTIFICIAL INTELLIGENCE Adway Mitra 3-0-0 3 U31, U32, U33 NR314 AI61002, CS60050, AI21201
AI60205 INTERPRETABLE MACHINE LEARNING Koustav Rudra 3-0-0 3 D31, D32, D33 NR213 AI61002, CS60050, AI21201
AI60209 AI/ML FOR ROBOT AUTONOMY Prabhat Kumar Mishra 4-0-0 4 X41, X42, X43, X44 NR213 —
AI60213 FOUNDATION OF LARGE LANGUAGE MODELS Plaban Kumar Bhowmick 3-0-0 3 B31, B32, B33 NR213 AI21204, CS60010, AI61002
AI61003 LINEAR ALGEBRA FOR AI AND ML Kota Srinivas Reddy 3-1-0 4 F41, F42, F43, F44 NR123 MA10001, MA10002
AI61005 ARTIFICIAL INTELLIGENCE: FOUNDATIONS AND APPLICATIONS Arnab Sarkar 3-1-0 4 A31, A32, A33, S31 NR414 —
AI61201 VISUAL COMPUTING WITH AI/ML Somdyuti Paul 3-1-0 4 E41, E42, E43, E44 NR313 AI61002, CS60050, AI21201
AT60205 PHOTONIC QUANTUM INFORMATION TECHNOLOGIES Syamsundar De 3-0-0 3 S31, S32, S33 Allocated —
CH61011 ADVANCED FLUID DYNAMICS Joydip Chaudhuri,Rabibrata Mukherjee 3-1-0 4 E41, E42, E43, E44 NR222,NR222 —
CH61015 ADVANCED MATHEMATICAL TECHNIQUES IN CHEMICAL ENGINEERING NETHRAVATHI,Jayanta Chakraborty,SAIKAT BISWAS,AATRAYEE DAS,Sirshendu De 3-1-0 4 D41, D42, D43, D44 NR121,NR121,NR121,NR121,NR121 MA20101, MA20102
CH61017 RHEOLOGY OF COMPLEX FLUIDS Pothukuchi Naga Venkata Rajesh Pavan,Manish Kaushal 3-1-0 4 C41, C42, C43, C44 NC313,NC313 —
CH62001 OPTIMIZATION TECHNIQUES IN PROCESS DESIGN Debasis Sarkar,Amandeep Jindal,UMMIYA QAMAR 3-1-0 4 C41, C42, C43, C44 NR423,NR423,NR423 —
CH62003 PROCESS MODELLING AND SIMULATION Abhishek Kumar Gupta,Sourav Mondal,MAMLESHWAR KUMAR,BOGESHWARAN KARUNANITHI 3-1-0 4 C41, C42, C43, C44 Allocated —
CH62007 INDUSTRIAL POLLUTION CONTROL RWIDDHI SARKHEL,Bhim Charan Meikap,SONAL RAJORIA 3-0-0 3 B31, B32, B33 NR121,NR121,NR121 —
CH62009 PETROLEUM REFINERY ENGINEERING Sonali Sengupta,JITENDRA KUMAR PRABHAKAR,Koustuv Ray 3-0-0 3 G31, G32, G33 NC243,NC243,NC243 —
CH62016 CHEMICAL REACTOR ANALYSIS Bhaskar Bhaduri,ABIR LAL BOSE,Madhusudan Sau,SARATHKUMAR SANKAR 3-1-0 4 F41, F42, F43, F44 NC342,NC342,NC342,NC342 —
CH62021 MULTIPHASE FLOW Joydip Chaudhuri,Gargi Das,ANOMITRA CHAKRABORTY 3-1-0 4 F41, F42, F43, F44 NC221,NC221,NC221 —
CH62047 CFD APPLICATIONS IN CHEMICAL PROCESSING NEETU BORA,Sudipto Chakraborty,ANITA ZADE 3-1-0 4 F41, F42, F43, F44 NC422,NC422,NC422 —
CH62049 MICROSCALE TRANSPORT PROCESSES Sunando Dasgupta,WRITTICK PAKHIRA,SULTAN AHMED,Somenath Ganguly 3-0-0 3 B31, B32, B33 NC141,NC141,NC141,NC141 —
CR61001 INTRODUCTION TO CRYOGENICS AND SUPERCONDUCTIVITY Parthasarathi Ghosh,Venimadhav Adyam 3-1-0 4 D41, D42, D43, D44 CRYO-21 —
CR61003 CRYOGENIC LIQUEFACTION SYSTEMS AND CRYOCOOLERS Tapas Kumar Nandi,Indranil Ghosh 3-1-0 4 E41, E42, E43, E44 CRYO-21 —
CR61005 HEAT AND MASS TRANSFER IN CRYOGENIC SYSTEMS Pavitra Sandilya,Parthasarathi Ghosh 3-1-0 4 F41, F42, F43, F44 CRYO-21 —
CR61013 STORAGE AND TRANSFER OF CRYOGENS Tapas Kumar Nandi 3-0-0 3 V31, V32, V33 CRYO-21 —
CR61017 CRYOGENIC HEAT TRANSFER DEVICES Indranil Ghosh 3-0-0 3 B31, B32, B33 CRYO-21 —
CR61019 VACUUM TECHNOLOGY Abhay Singh Gour 3-0-0 3 C31, C32, C33 CRYO-21 —
CR61025 SUPERCONDUCTING MAGNETS – DESIGN AND APPLICATION Abhay Singh Gour 3-0-0 3 A31, A32, A33 CRYO-21 —
EP21201 INTRODUCTION TO INNOVATION AND ENTREPRENEURSHIP Mrigank Sharad,Titas Bhattacharjee (Rudra),Prabha Bhola 2-1-0 3 H31, H32, H33 NR221,NR221,NR221 —
ET60007 INTRODUCTION TO DIGITAL SPEECH PROCESSING Shyamal Kumar Das Mandal 3-1-0 4 F41, F42, F43, F44 Allocated —
IP60017 INTRODUCTION TO INTELLECTUAL PROPERTY RIGHTS Niharika Sahoo Bhattacharya 3-0-0 3 V31, V32, V33 V3 —
PE40001 PETROLEUM ENGINEERING FUNDAMENTALS Ankur Roy 3-0-0 3 H31, H32, H33 Allocated —
PE60001 DRILLING AND HYDROFRACKING TECHNOLOGY Sandeep D Kulkarni 3-0-0 3 F31, F32, F33 Allocated —
PE60003 RESERVOIR SIMULATION Aditya Vyas 3-0-0 3 U31, U32, U33 Allocated —
PE60008 ENHANCED OIL RECOVERY Aditya Vyas 3-0-0 3 S31, S32, S33 Allocated —
PE60009 CARBON GEO-STORAGE AND MONITORING Vishnu Chandrasekharan Nair 3-0-0 3 V31, V32, V33 Allocated —
RD30005 FUNDAMENTALS OF RURAL INNOVATION AND MANAGEMENT Somnath Ghosal,Piyush Kumar Singh 3-0-0 3 D31, D32, D33 CRDIST 1 —
RD61003 FINANCIAL TECHNOLOGY FOR RURAL AND AGRIBUSINESS DEVELOPMENT Piyush Kumar Singh,Inder Sekhar Yadav 3-1-0 4 V41, V42, V43, V44 CRDIST 1 —
RT30019 SCI AND TECH. RUBBER & RUBBER LIKE MATERIALS RT 3-0-0 3 — Not Offered —
RX23202 JOY AND SUCCESS Pritha Datta 1-1-3 4 S33, X41, X42, X43, X44 NR113 —
RX60009 COGNITIVE PSYCHOLOGY AND NEUROSCIENCE Rajlakshmi Guha 3-0-0 3 G31, G32, G33 NC341 —
RX60023 INTRODUCTION TO COGNITIVE INFORMATION PROCESSING Rajlakshmi Guha 3-0-0 3 F31, F32, F33 NC341 —
RX60202 EMPLOYEE WELLBEING Atasi Mohanty 3-0-0 3 F31, F32, F33 NR421 —