Searching - TalTech Research Portal

display

sort
1

book article

Modelling of high-speed electrical railway system for transmission network voltage quality analysis : Rail Baltic case studyKilter, Jako; Sarnet, Tanel; Kangro, TriinPQ2014 : the 9th International 2014 Electric Power Quality and Supply Reliability Conference (PQ) : June 11-13, 2014, Rakvere, Estonia : proceedings2014 / p. 323-328 : ill

book article
2

book article

Wide-Area applications for enhancement of Estonian power system securityKilter, Jako; Reinson, AndrusPQ2012 : 8th International Conference : 2012 Electric Power Quality and Supply Reliability : June 11-13, 2012, Tartu, Estonia : conference proceedings2012 / p. 143-148 : ill https://ieeexplore.ieee.org/abstract/document/6256218

book article

Number of records 2, displaying 1 - 2

1. power system security
2. communication system security
3. comprehensive system of economic security
4. system of economic security
5. system security
6. transmission System Security
7. aircraft electric power system
8. consumer power system
9. cyber physical power system (CPPS)
10. Egyptian power system
11. electric power storage system
12. electric power system control
13. electric power system stability
14. faults in power system
15. fluid power feeding system with a pneumo-hydraulic accumulator
16. fluid power system
17. hybrid power system
18. Interconnected power system
19. lithium batteries and power system modeling
20. local power supply system
21. Modern power system
22. multi-machine power system
23. power distribution system
24. power system
25. power system analysis computing
26. power system control
27. power system dynamics
28. power system economics
29. power system faults
30. power system harmonics
31. power system management
32. power system measurements
33. power system modeling
34. power system modelling
35. power system operation
36. power system parameter estimation
37. power system planning
38. power system protection
39. power system reliability
40. power system resilience
41. power system restoration
42. power system simulation
43. power system simulations
44. Power system stabilizer (PSS)
45. power system stability
46. power system transient stability
47. power-to-gas based storage system
48. Real interconnected power system
49. power electronics applications in power systems and utilities
50. ad-hoc sensor networks security
51. Automatic Security Verification
52. Blockchain security
53. cache security
54. cloud security
55. computer security
56. cooperative security dilemma
57. cyber security
58. cyber security education
59. cyber security exercises
60. cyber security monitoring
61. cyber security strategies
62. cyber-security
63. data and information security
64. data security
65. development of security cameras
66. digital security practices
67. drinking water security
68. economic security
69. economic security of enterprise
70. emotional security
71. energy security
72. energy security indicator
73. Estonian information security standard
74. graded security
75. hardware security
76. hardware security primitive
77. high level of security
78. Homeland security
79. human security
80. information security
81. information security and privacy
82. initial level of security
83. internal security
84. international security
85. investment and innovation security
86. IPv6 security
87. IT security
88. IT security management
89. job security
90. long-term security
91. maritime cyber security
92. maritime cyber security operations centers
93. Maritime Security Operations Center (M-SOC)
94. medium level of security
95. metadata model for security measures
96. Middle Eastern security
97. Mobile security
98. national cyber security strategy
99. national security
100. NATO. Science for Peace and Security Program
101. network security
102. network security monitoring
103. OSCE (Organization for Security and Co-operation in Europe)
104. passenger’s security
105. policy-based routing security
106. political and security cultures
107. post-quantum security
108. quantitative security
109. regional security
110. RISC-V Security Verification
111. Safety and Security in Sea Transportation
112. safety and security testing
113. security
114. security adaptation
115. security alert prioritization
116. security analysis
117. security and justice (AFSJ)
118. Security and political science
119. security and privacy
120. security and privacy in smart grids
121. Security Assertion
122. Security Assertion Mining
123. security closure
124. Security Coverage
125. security dataset
126. security dilemma
127. Security evaluation
128. security evaluation instruments
129. Security Level Evaluation
130. Security limitations
131. security log analysis
132. security management
133. security model
134. security monitoring
135. security notion
136. security objectives
137. security of data
138. security of supply
139. security operation center
140. security operations center
141. security patterns
142. security policy
143. security problem definition
144. security proof
145. security protocols
146. security requirements
147. security requirements engineering
148. security research
149. security risk assessment
150. security risk management
151. security risks
152. security science and technology
153. security strategies
154. security systems for military objects
155. security testing
156. security training
157. security verification
158. security-by-design
159. social security planning
160. societal security
161. software security
162. software security level
163. software security subcharacteristics
164. sufficient level of security
165. terrorism security
166. voting privacy and security
167. AC power converters
168. AC/DC power converter
169. ac/dc-dc power converters
170. AC‐AC power convertors
171. ac-dc power conversion
172. AC-DC power converter
173. AC-DC power converters
174. active distribution system
175. active power
176. active power decoupling
177. Adaptive network-based fuzzy inference system (ANFIS)
178. adaptive power allocation
179. Adaptive virtual inertia system
180. advanced driver assistance system
181. agri-food system
182. air transportation system
183. AIS navigation tracking system
184. algebraic weak factorisation system
185. allocation system
186. alpha power variability
187. Android (operating system)
188. anomaly detection for system logs
189. antilock braking system
190. anti-lock braking system
191. anti–lock braking system
192. ascending hierarchical grid system
193. asynchronous system
194. Automated Bonding Evaluation System
195. Automated placement system
196. Automatic identification system
197. automatic identification system (AIS)
198. autonomic nervous system
199. Autonomous Identification System (AIS)
200. Autonomous Maritime Surveillance System (AMSS)
201. autonomous parking system
202. autonomous system
203. auxiliary power supply
204. balance of power
205. balancing power
206. ball and beam system
207. Ballast water treatment system
208. banking system
209. barotrauma detection system
210. Barotrauma detection system sensors
211. battery energy storage system
212. battery energy storage system (BESS)
213. Battery management system
214. Battery system
215. BeiDou Navigation Satellite System (BDS)
216. bicycle-sharing system
217. bidirectional power flow
218. bidirectional power flow control
219. bidirectional power transfer
220. Biological system modeling
221. biological system modelling
222. biosensing system
223. bipolar electrode system
224. bisection based optimal power allocation
225. blended braking system
226. Board and System Test
227. boost power converter
228. braking system
229. bridge management system
230. buck-boost full power converter
231. buck–boost power converter
232. Building Automation and Control System (BACS)
233. building service system
234. Business School Impact System (BSIS)
235. CAD/CAM system
236. Cambrian-Vendian aquifer system
237. capabilities of power electronics
238. capacitive power transfer
239. capture system
240. car frontal protection system
241. carbonate system
242. cardiovascular system
243. cartesian system model
244. catching-up innovation system
245. CAVE-like system
246. cell broadcast system (CBS)
247. cell management system
248. central nervous system
249. central nervous system lymphoma
250. centralized control system
251. chaotic system
252. CHP (combined power and heat)
253. city transport system
254. climate and earth system modelling
255. closed distribution system
256. cloud- and AI-based system
257. cloud manufacturing operating system
258. cloud operating system
259. coastal forecasting system
260. cognitive system engineering
261. collision alert system
262. combined heat and power
263. combined heat and power economic dispatch (CHPED)
264. combined heat and power plant
265. common-ground power converter
266. complex adaptive system
267. compressed air system
268. computer algebra system
269. concentrated solar power
270. condensing power plant
271. condition monitoring system
272. connection power
273. constant power load
274. constant power source
275. consumed power minimization
276. consumer-perceived power
277. context aware recommender system (CARS)
278. context-aware recommender system
279. contribution to power quality deterioration
280. control system
281. control system analysis
282. control system design
283. control system for grid integration
284. control system stability
285. control system synthesis
286. conventional power plant
287. COOR system
288. corporate performance monitoring system
289. court information system
290. Cyber Physical Production System
291. cyber physical social system
292. cyber physical system
293. cyber power Europe
294. cyber-physical social system (CPSS)
295. cyberphysical system
296. cyber-physical system
297. Cyber-Physical System (CPS)
298. cyber-physical system logistic robot
299. data acquisition system
300. database management system
301. database management system (DBMS)
302. DC power supply
303. DC/DC power conversion
304. DC/DC power converters
305. DC-AC power conversion
306. DC-AC power converters
307. DC-AC power convertors
308. DC-DC power conversion
309. DC‐DC power conversion
310. DC-DC power converter
311. DC-DC power converters
312. DC–DC power converters
313. DC-DC power convertors
314. DC‐DC power convertors
315. decision support system
316. decision support system (DSS)
317. decision support system for housing
318. design system
319. DHW influence on DH system dimensioning
320. Differential Power Analysis (DPA)
321. differential power processing (DPP)
322. digital decision support system
323. Digital decision support system (DDSS)
324. digital Last Planner System whiteboard
325. dimensioning cooling power
326. directional power spectral density
327. disaster relief system
328. Discrete power device
329. discrete-time system
330. distributed power
331. distributed power generation
332. distributed power systems
333. distributed system
334. distribution system
335. distribution system modelling
336. distrubuted power generation
337. diverse system
338. document management system
339. double interceptor system
340. double power-law
341. double-cabled system
342. drive system
343. dual-purpose dc-dc/ac power converter
344. dynamic system
345. Earth observing system
346. earth system modelling
347. earth system study
348. economic power dispatch
349. efficiency of flywheel storage system
350. e-Health system
351. electric power distribution
352. electric power generation
353. electric power systems
354. electric power transmission
355. electric power transmission networks
356. electric power utilization
357. electric vehicle propulsion drive system
358. electrical power domain
359. electrical power quality
360. electrical power systems
361. electrical storage system
362. electricity system
363. electricity-heating system
364. electrode-tissue system
365. electro-hydraulic servo-system
366. Electronic Education System Model-2
367. Electronic record management system
368. embedded system
369. emerging power converters
370. end-to-end model-based system
371. energy management system
372. energy management system (EMS)
373. energy storage system
374. energy storage system (ESS)
375. energy system
376. energy system analysis
377. energy system management
378. energy system model
379. energy system modeling
380. energy-management system
381. environmental management system
382. e-permitting system
383. e-state system
384. Estonian accounting system
385. Estonian National Health Information System
386. estonian national health information system (ENHIS)
387. Estonian nationwide Health Information System (EHIS)
388. EU regulatory system for medicines
389. European arrest warrant system (EAW)
390. European legal system
391. European Vertical Reference System (EVRS)
392. exchange rate system
393. exhaust system
394. experimental system
395. External Thermal Insulation Composite System
396. External Thermal Insulation Composite System (ETICS)
397. external thermal insulation composite system ETICS
398. factorization system
399. financial system
400. fixed exchange rate system
401. flexibility in power systems
402. flexible manufacturing system
403. floor heating system
404. flow system
405. flow-trough system
406. food system
407. fossil fuel power plants
408. four-electrode system
409. four-wire system
410. fractional power zero-pole
411. fractional singular system
412. fractional-order system
413. fuel cell power systems
414. full power converter
415. full power Z -source converter
416. functional power plants
417. functional power-plants
418. GaAs power devices
419. galvanically isolated DC-DC power converter
420. GaN system
421. Gasifier system
422. Geographic Information System (GIS)
423. geographical information system
424. Geological Power Bank
425. Georgian legal system
426. Global Maritime Distress and Safety system (GMDSS)
427. global maximum power point
428. global ocean observing system
429. Global Positioning System (GPS)
430. global power sharing
431. GNU/Linux System Hardening
432. green manufacturing system
433. grid-connected power supply
434. grid-connected PV system
435. grid-forming power converters
436. habitation system
437. harmonized system taxonomy
438. health care system
439. health system
440. heat and power plant
441. heat emission system
442. heating energy system
443. heating power
444. heating system
445. height system realization
446. height system unification
447. high percentage of wind power
448. high power density
449. high step-up power converter
450. high voltage power converters
451. home battery energy storage system (HBESS)
452. home energy management system
453. human factors in vehicular system
454. human-machine system
455. HVAC system
456. hybrid energy storage system
457. hybrid energy system
458. hybrid renewable energy system
459. hydraulic power
460. hydraulic system
461. hydroelectric power generation
462. hydroelectric power station (HEPS)
463. IEEE 9 bus test system
464. immune system
465. inductive power transfer
466. inductive power transfer (IPT)
467. inductive power transmission
468. inductive wireless power transfer link
469. industrial control system (ICS)
470. industrial power systems
471. influence on DH system dimensioning
472. information processing system
473. information system
474. Information System Authority (RIA)
475. inlet system
476. innovation system
477. instantaneous power balancing
478. in-system programming
479. integrated electricity and natural gas system (IEGS)
480. integrated energy system
481. Integrated navigation system
482. integrated programming system
483. integrated system of performance analysis
484. integrated waste management system
485. integration of solar power plants
486. intelligent decision support system
487. intelligent transport system
488. international system
489. intrusion detection system
490. intrusion detection system (IDS)
491. intrusion response system
492. INVAR neuromarketing method and system
493. isolated power conditioning unit (PCU)
494. isolated power converters
495. IT system landscapes
496. IT system maturity
497. ITS (Intelligent Transportation System)
498. Kalman-filter based maximum power point tracking (KF-MPPT)
499. Kanban (pull system)
500. Knowledge management system
501. knowledge-based system
502. laboratory inforation management system (LIMS)
503. laboratory information management system (LIMS)
504. large-scale district heating system
505. Last Planner System
506. Last Planner System (LPS)
507. leakage current and reactive power supporting
508. lean manufacturing system
509. learning management system
510. leasing reporting system
511. legal system
512. library system
513. limited power
514. linear control system
515. low power
516. low system strength
517. low-level control system transportation
518. low-power ASIC design
519. low-power decoupling
520. low-power designs
521. low-power device
522. lowpower embedded system
523. magnetic levitation system
524. manufacturing execution system
525. manufacturing execution system (MES)
526. marine carbon dioxide system
527. market power
528. market power mitigation
529. maximum available power
530. maximum power point
531. maximum power point tracker
532. Maximum power point trackers
533. maximum power point tracking
534. maximum power point tracking (MPPT)
535. Maxwell system
536. meandering river system
537. measuring system
538. mechanical ventilation system
539. mechatronics system control
540. medical decision support system (MDSS)
541. medical system
542. medium voltage power cables
543. MET system in Estonia
544. meta-system
545. Milliken-Taylor system near zero
546. Mini-block power plant
547. mixed surfactant system
548. mixed-critical system
549. mobile cyber-physical system
550. mobile information system
551. modern system-on-chips (SoCs)
552. modified Peregrine system
553. modular system
554. module level power electronics (MLPE)
555. module-level power electronics (MLPE)
556. monetary system
557. monitoring system
558. motion capture system
559. motor-drive system
560. multi agent system
561. multi-agent system
562. multi-agent system (MAS)
563. Multi-area coordination of integrated electricity and natural gas transmission system
564. multi-machine industrial power plant
565. multiple-input multiple output system
566. multi-port system
567. multi-processor system-on-chip
568. multi-processor system-on-chips (MPSoCs)
569. multi-pump system
570. multirate system
571. Muti-Processor System on Chip (MPSoC)
572. narrowband power line communications
573. national innovation system
574. natural ventilation system
575. navigation system
576. nervous system
577. Nervous system diseases
578. network intrusion detection system
579. neuro-fuzzy system
580. news recommendation system
581. non-active power
582. non-coercive power
583. nonlinear control system
584. nonlinear dynamic system
585. nonlinear system
586. nonnegative solution to the system of linear equations
587. normalized system
588. normalized system (NS)
589. normative power
590. nuclear power
591. occupational health and safety management system
592. offer management system
593. off-grid hybrid power supply
594. Off-shore wind power
595. offshore wind power plants
596. oil shale-fired power plants
597. oil-shale power generation
598. on-site PV system
599. operating system
600. optical system
601. optoelectronic system
602. orthographic system modeling
603. parallel active power filter
604. partial power based on buck-boost resonance converter
605. partial power based on isolated Z - Source converter(PPZSC)
606. partial power conversion
607. partial power converter
608. partial power converter (PPC)
609. partial power converters
610. partial power converters (PPC)
611. partial power DC-DC converter
612. partial power processing
613. Partial power processing (PPP)
614. peak power limiting
615. performance management system
616. performance measurement system
617. photovoltaic power plant
618. photovoltaic power systems
619. photovoltaic system
620. photovoltaic system (PV)
621. Pichia pastoris expression system
622. planning support system (PSS)
623. port community system
624. portable medical system
625. portable system
626. power
627. power allocation
628. power amplifier
629. Power amplifiers
630. power aware computing
631. power balance
632. power based control
633. power bed fusion
634. power cable
635. Power cables
636. power capacitors
637. power chart
638. power combiner
639. power conditioner
640. power conditioning
641. power conditioning units (PCUs)
642. power consensus
643. power consumption
644. power consumption of production
645. power control
646. power conversion
647. power converter
648. power converter interfaces
649. power converters
650. power converters design
651. power converters for EV
652. power decoupling
653. Power Delay Product (PDP)
654. power delivery network
655. power demand
656. power density
657. power devices
658. power diodes
659. power dissipation
660. power disspation
661. power distribution
662. power distribution control
663. power distribution faults
664. power distribution lines
665. power distribution network
666. power electronic building block
667. power electronic converter
668. power electronic converters
669. power electronic interfaces
670. power electronic interfaces for renewable energy sources
671. power electronic transformer
672. power electronics
673. power electronics (PE)
674. power electronics converter
675. power electronics converters
676. power electronics solutions
677. power engineering
678. power engineering computing
679. power exchange
680. power factor
681. power factor correction
682. power factor correction (PFC)
683. power flow
684. power flow equations
685. power forecasting
686. power frequency
687. power generation
688. power generation dispatch
689. power generation economics
690. power generation planning
691. power grid
692. power grid imbalance
693. power grid project
694. power grids
695. power harmonic filters
696. power imbalance
697. Power industry
698. power injection
699. power inverter
700. power inverters
701. Power Iteration Clustering (PIC)
702. power law
703. Power leveling strategy
704. power limitation
705. power line communication
706. power line construction
707. power loss
708. power loss minimization
709. power loss model
710. power losses
711. power management
712. power market model
713. power markets
714. power measurement
715. power mismatch analysis
716. power module
717. power MOSFET
718. power of discrimination
719. power optimization
720. power optimizer
721. Power oscillation damping controller (PODC)
722. power outage
723. Power Plant
724. power plant cycling
725. power plant pollution
726. Power plants
727. power quality
728. Power quality (PQ)
729. power quality benchmarking
730. power quality case study
731. Power Quality Disturbances (PQD)
732. power quality disturbances (PQDs)
733. power quality legislation
734. power quality measurement
735. power quality measurement equipment
736. power quality measurements
737. power quality monitoring
738. power quality parameters
739. power reduction
740. power reliability
741. power semiconductor device
742. power semiconductor devices
743. power semiconductor switches
744. power series
745. power sharing
746. power signature
747. power smoothing
748. power sources
749. power spectral density
750. power spectrum
751. Power storage
752. power supplier
753. power supplies
754. power supplies to apparatus
755. power supply
756. power swings
757. power systems
758. Power systems expansion
759. power systems flexibility
760. power sytems
761. power to hydrogen technology
762. power transfer distribution factor
763. power transformers
764. power transistors
765. power transmission
766. power transmission lines
767. power variations
768. power verification
769. power-aware
770. power-electronic converters
771. power-factor correction
772. power-flow equations
773. power-hardware-in-the-loop
774. power-laws
775. power-sharing
776. Power-to-heat
777. power-to-hydrogen
778. power-to-X
779. powertrain system
780. PQ (Power Quality)
781. PQM (Power Quality Monitoring)
782. processing system
783. procurement system structure
784. production monitoring system
785. production monitoring system (PLM)
786. production monitoring system (PMS)
787. production performance evaluation system
788. programmable system-on-chip
789. propeller and propulsion system
790. propulsion drive system
791. pulse width modulated power converters
792. pulsed power load (PPL)
793. pulsewidth-modulated power converters
794. PV module level power electronics
795. PV power generation
796. PV power output
797. PV power plant
798. PV system
799. PV System 200kW
800. quality system
801. radiator heating system
802. rail transit system
803. railway system modelling
804. rainwater drainage system
805. rating system
806. reactive power
807. reactive power compensation
808. reactive power control
809. reactive power injection
810. reactive power management
811. reactive power provision
812. real-time tariff system
813. recommendation system
814. recommender system
815. reconfigurable manufacturing system
816. Regional integrated energy system (RIES)
817. relative band power
818. relative gamma power
819. renewable energy system
820. renewable-based hybrid system
821. renin–angiotensin system
822. renin-angiotensin system inhibitors
823. reporting system
824. research-funding system
825. residential battery energy storage system
826. residential wind energy conversion system
827. resonant power convertors
828. reverse power flow
829. reverse power transfer
830. rigorous formal diagrammatic system
831. river system
832. robot operating system
833. Robot Operating System (ROS)
834. r-th power residue symbol
835. rule system
836. safety management system
837. sample collection system
838. Satellite Autonomous Identification System (SAIS)
839. SCADA system
840. self learning system
841. series partial power converter (S-PPC)
842. series partial power converter (S-PPC) based on the push-pull
843. servo system
844. shade-tolerant maximum power point tracking (MPPT)
845. shale oil and power cogeneration
846. shear wall system
847. Shock system
848. shunt active power filter
849. single phase system
850. single-phase system
851. single-stage system
852. singular system
853. SIS II (Schengen Information System II)
854. Si-SiO2 system
855. smart drainage system
856. smart energy management system (SEMS)
857. smart power electronics
858. smart power grids
859. smart waste management system
860. social system theory
861. socio-economic system change
862. sociotechnical system
863. socio-technical system
864. Soft power
865. solar power
866. solar power forecasting
867. solar power generation
868. solar power plant integration
869. Solar tracking system
870. space-based solar power
871. spread and development of new policy instruments (environmental taxes and charges system)
872. standards-based classfication system
873. static power converters
874. stochastic port-Hamiltonian system
875. storage system
876. support system
877. surplus power factor
878. suspension system
879. sustainable power engineering
880. sustainable urban drainage system
881. switch mode power supply
882. switched mode power supplies
883. switched-mode power supplies
884. switchedmode power supply
885. switched-mode power supply
886. symbolic power
887. system
888. system analysis
889. system analysis and design
890. system approach
891. system architecture
892. system architectures
893. system calls
894. system catalog
895. system Cu-Al2O3
896. system design
897. system dynamics
898. system engineering
899. system evaluation
900. system flexibility
901. system GMM
902. system identification
903. system integrated analysis
904. system integration
905. system level
906. system level hazards
907. system level simulation
908. system level test
909. system losses
910. system modeling
911. system monitoring
912. system of branded automotive service
913. system of linear inequalities
914. system of systems
915. system operator
916. system optimization
917. system performance
918. system planning level
919. system protection schemes
920. system reliability
921. system restoration
922. system robustness
923. system stabilization
924. system stability
925. system studies
926. system testing
927. system theory
928. system thinking
929. system throughput
930. system Validation
931. system vulnerability
932. system-level analysis
933. system-level evaluation
934. system-on-chip
935. system-to-software integrity
936. talkative power conversion
937. technological innovation system (TIS)
938. technological system
939. tetrapolar electrode system
940. Thermal Insulation Composite System (ETICS)
941. thermal management system
942. thermal power plant
943. thermal power plants
944. Thermal Power Station
945. theta band power
946. thin-layer rendering system
947. three-phase power factor correction (PFC) converter
948. three-pillar system
949. time-delay renewable power systems
950. TLC-antioxidant system
951. topological power plant
952. topology/power control
953. touch-free system design
954. Toyota production system
955. traffic information system (TIS)
956. transactive energy system
957. transition system
958. transmission system
959. transmission system operation
960. transmission system operator
961. transmission system operator (TSO)
962. transport system efficiency
963. two-electrode system
964. UN system
965. underfloor cooling system
966. Unified Patent Litigation System (UPLS)
967. Unified power flow controller (UPFC)
968. uninterruptible power supply (UPS)
969. unknown system
970. urban drainage system
971. urban drainage system modeling
972. urban drainage system modelling
973. value system
974. value-system
975. variable air volume system
976. warning system
977. vascular system
978. water distribution system
979. water distribution system modelling
980. water tank system
981. wave power
982. WC-Co system
983. welding power supply
984. ventilation system
985. wind power
986. wind power forecasting
987. wind power generation
988. wind power generators
989. wind power plants
990. wind power production
991. Wind-photovoltaic-thermal-bundled power
992. wireless power transfer
993. virtual power plant
994. virtual power plant (VPP)
995. virtual power plants
996. virtual power plant's (VPPs)
997. VIS (Visa Information System)
998. workflow management system
999. working power of luminaires
1000. voting power
1001. 1 kV system
1002. 15min power balance
1003. recommender system
1004. 'Smart House' System

1. cell broadcast system (CBS)

1. Department of Electrical Power Engineering and Mechatronics

1. Power, Ian M.

power system security (keyword)

types of item

keyword 1004

subject term 4

TalTech subject term 1

TalTech department 1

author 1