Explain the following terms and concepts in WiFi Networksi) a) Req.pdf

•

0 likes•2 views

Explain the following terms and concepts in WiFi Networks i) a) Request to send b) Clear to Send c) Hidden Terminal Problem ii) In 802.11 DCF explain why SIFS is less than DIFS. iii)How does a transmitting station in 802.11 know that a packet has been received correctly? iv) Explain what is the difference between physical and virtual carrier sensing v) What is the difference between active and passive scanning? Solution 1) a) b) RTS/CTS (Request to Send / Clear to Send) is the optional mechanism used by the 802.11 wireless networking protocol to reduce frame collisions introduced by the hidden node problem. c)In wireless networking, the hidden node problem or hidden terminal problem occurs when a node is visible from a wireless access point (AP), but not from other nodes communicating with that AP. This leads to difficulties in media access control sublayer. 2) This is to give priority to some packets. For example after transmitting the DATA packets the receiver should be allowed to send ACK packets without any collisions. To accomplish this, we transmit the ACK packets immediately after SIFS time interval for this puporse sifs is always less that difs. 3)For 802.11 and wireless LAN, all the polling packets have to be transmitted over the air, generating much more overhead. More recent system use reservation slots, which is more flexible but still require significant overhead. 4) Physical and Virtual Carrier Sense. The 802.11 standard specifies two ways to determine if the medium is busy. ... Both cases are handled using a virtual carrier sense mechanism. It consists of a Network Allocation Vector (NAV) maintained by each client. 5)A client can use two scanning methods: active and passive. During an active scan, the client radio transmits a probe request and listens for a probe response from an AP. With a passive scan, the client radio listens on each channel for beacons sent periodically by an AP..

Education

Similar to Explain the following terms and concepts in WiFi Networksi) a) Req.pdf

International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.

Fs3610481053

IJERA Editor

Performance Analysis of MAC Layer Protocols for WSN with Considering the Effe...

BRNSSPublicationHubI

WLAN - IEEE 802.11

Rahul Hada

Ccn(Data communication and networking) edited solution-manual suitable to be ...

Vishal kakade

wireless lan presentation.ppt

HODElex

Cognitive IoT is exponentially increased because of various real time and robust applications with sensor networks and big data analysis. Each IoT protocol of network layer can be RPL, COAP and so on based on IETF standards. But still collision problems and security-aware fair transmission on top of scalable IoT devices were not solved enough. In the open wireless LAN system based cognitive IoTs, IoT node that is continuously being stripped of its transmission opportunity will continue to accumulate packets to be sent in the butter and spoofing attacks will not allow the data transfer opportunities to be fair. Therefore, in this paper, we propose a method to reduce the average wait time of all packets in the system by dynamically controlling the contention window (CW) in a wireless LAN based cognitive IoT environment where there are nodes that do not have fair transmission opportunities due to spoofing attacks. Through the performance evaluation, we have proved that the proposed technique improves up to 80% in terms of various performance evaluation than the basic WLAN 802.11 based IoT.

Security-aware fair transmission scheme for 802.11 based cognitive IoT

IJECEIAES

Ag34200206

IJERA Editor

802.11 Computer Networks

TusharChoudhary72015

www.ijerd.com

IJERD Editor

WiFi 802.11

selvakumar_b1985

Wireless LAN Technology:-Overview-Wireless LAN Applications, Wireless LAN Requirements, Wireless LAN Technology. Infrared LANs-Strengths and Weakness, Transmission Techniques. Spread Spectrum LANs- Configuration, Transmission Issues. Narrowband Microwave LANs. IEEE 802.11 Wireless LAN Standard:- IEEE 802.11 Architecture and Services, Medium Access Control-CSMA/CA, Physical Layer-IEEE-802.11 FHSS, IEEE-802.11 DSSS, IEEE-802.11a OFDM, IEEE-802.11b HR-DSSS, IEEE-802.11g OFDM. IEEE- 802.11 Addressing Mechanism. Blue Tooth:- Architecture, Bluetooth Layers, Radio Layer, Baseband Layer, L2CAP, Other Upper Layers. VIRTUAL LANS:- VLAN Technology, Membership, Configuration, Communication Between Switches, IEEE Standard, Advantages.

Computer networks wireless lan,ieee-802.11,bluetooth

Deepak John

Abstract—In recent times, there has been an exponential increase in the use of mobile wireless devices such as smartphones, tablets etc. This has in turn led to a matching increase in demand for mobile broadband data usage. Many technologies have been engaged in order to meet this enormous data need. Long Term Evolution (LTE) and Wireless Fidelity (Wi-Fi) are major technologies used in meeting this high data demand. However, LTE was designed to operate in the licensed spectrum as a schedule-based technology in which the Evolved Node B (eNodeB) allots time-slots to devices in its cell. The licensed spectrum is more expensive to maintain for service providers and with increase in mobile wireless devices that same licensed spectrum is more congested. Operation of LTE in Unlicensed spectrum has been proposed as a solution to this need. However, if LTE operates in the unlicensed spectrum in its native form, Wi-Fi and other legacy technologies operating in the unlicensed spectrum get deprived of channel access. In this paper, we proposed a modified Blank Subframe Allocation technique in combination with Listen before talk (LBT) Clear Channel Assessment (CCA) before allocating the spectrum to its users to give channel access opportunity to Wi-Fi devices. Simulation was conducted for both instances i.e. when LTE operates with only Blank Subframe Allocation (BSA) coexistence and when CCA is applied to the LTE node. Performances of both models were evaluated using performance matrices such as delay time and throughput. The results showed that the proposed model achieved a smaller delay time than the existing model. International Journal of Computer Science and Information Security,IJCSIS ISSN 1947-5500, Pittsburgh, PA, USA Email: ijcsiseditor@gmail.com http://sites.google.com/site/ijcsis/ https://google.academia.edu/JournalofComputerScience https://www.linkedin.com/in/ijcsis-research-publications-8b916516/ http://www.researcherid.com/rid/E-1319-2016

Long Term Evolution Coexistence with Wireless Fidelity in Unlicensed Spectrum...

IJCSIS Research Publications

CS8601-IQ.pdf

GayathriRHICETCSESTA

CS8601-IQ.pdf

GayathriRHICETCSESTA

Wireless is playing the wide role in todayÃ¢â‚¬â„¢s industrial application. Central idea of this paper is to enhance quality of service (QoS) for multimedia transmission over ad-hoc network. This paper describes the operational of different QoS routing protocols, their properties and various parameters advantages and disadvantages. Also describes the use of QoS in Cross layer routing protocol. Finally, it concludes by study of all these cross layer QoS routing protocols.

A Survey on Cross Layer Routing Protocol with Quality of Service

IJSRD

U2CH1Data Link Layerxxxxxxxxxxxxxxxxx.pptx

k2w9psdb96

IT8602 Mobile Communication - Unit III

pkaviya

Opnet lab 2 solutions

حيدر نافع nafaa

Basic concept of frame relay

NetProtocol Xpert

Ieee 802.11overview

Object-Frontier Software Pvt. Ltd

Similar to Explain the following terms and concepts in WiFi Networksi) a) Req.pdf (20)

Fs3610481053

Performance Analysis of MAC Layer Protocols for WSN with Considering the Effe...

WLAN - IEEE 802.11

Ccn(Data communication and networking) edited solution-manual suitable to be ...

wireless lan presentation.ppt

Security-aware fair transmission scheme for 802.11 based cognitive IoT

Ag34200206

802.11 Computer Networks

www.ijerd.com

WiFi 802.11

Computer networks wireless lan,ieee-802.11,bluetooth

Long Term Evolution Coexistence with Wireless Fidelity in Unlicensed Spectrum...

CS8601-IQ.pdf

A Survey on Cross Layer Routing Protocol with Quality of Service

U2CH1Data Link Layerxxxxxxxxxxxxxxxxx.pptx

IT8602 Mobile Communication - Unit III

Opnet lab 2 solutions

Basic concept of frame relay

Ieee 802.11overview

More from shalins6

Describe two benefits of the industrial revolution and two problems it caused. Make sure that your answer is not focused only on the early years of the industrial revolution. Why do you think industrial reform came so slowly between 1815 and 1914? Solution Benefits: 1)As the scale of production of goods increased under the capitalist model, people from all sections of society were able to enjoy consumption of products that were previously considered an luxury for the few. the city of Manchester, the numerous cotton mills set up there produced sufficient goods to supply to the local markets and also export the surplus to other countries.Along with this, the industrial revolution brought the concept of the overall efficiency of the production process. Terms such as efficiency and quality were given emphasis, the benefits of which are transferred to the end consumer. 2)Transportation and technology - the expansion of business and factories expanded our transportation network out of necessity and brought us canals, highways and turnpikes. It better connected us together as a society. We also saw technological innovation like interchangeable parts (Eli Whitney) and the textile mill (Samuel Slater) which revolutionized how we lived. Problems: 1) Factories that produce goods on a massive scale are the most prominent symbols of the industrial revolution. Such a radical transformation was allowed to happen because it suited the interests of the aristocracy and nobility of the time. The ruling elite of England were also the owners of most the country’s wealth and it suited their interest to perpetuate a method that maintained status quo. This meant that the prevailing inequities in distribution of wealth accentuated further as the industrial revolution marched on. Some intellectuals have cited this as the major problem with the capitalist model and have hence condemned the revolution as socially unjust. 2)The other criticism that is leveled against large-scale industries is their tendency to accelerate the process of urbanization and ultimately contribute to pollution and squalor. For example, the issues of overpopulation, petty crime, prostitution and pollution in the industrial city of Manchester are well documented by Kishlansky and other scholars. Why do you think industrial reform came so slowly between 1815 and 1914? there is an interesting reason why the industrial reforms process was sluggish during the nineteenth century. One of the main reasons for this slowing down is the sprouting up of a new class of people called the bourgeoisie. In the feudal system that preceded the capitalist system, there were only two classes – the landowning class and the peasantry. But with the onset of the industrial revolution, a whole new social class was created, which made the capitalists feel insecure and vulnerable. Hence one could see during the period of the nineteenth century, an attempt by the capitalists to retain their power and influence over the rest.

Describe two benefits of the industrial revolution and two proble.pdf

shalins6

Dee Dee\'s parents place a high value on academic achievement, but her peers do not. In this situation, Dee Dee is most likely to: split the difference and become an average student. suffer psychological damage. be more strongly influenced by the values of her parents. be more strongly influenced by her peers. Solution Answer: be more strongly influenced by her peers. Explanation: By seeing the achievements of peers (low value on academics), the Dee might have realized and tried to have high values on acedmica. So it can be said as the Dee is influenced by her peers..

Dee Dees parents place a high value on academic achievement, but h.pdf

shalins6

An inter satellite link is established between two satellites. One satellite located at 325.5degreeE is transmitting with an EIRP of 20 dBW. The receiving satellite is at 359 degree E. Find the distance S between them, in km, and the illumination W in dBW/m^2. Solution for geostationary satellites illumination is given by, W = EIRP - 162 dBW/m^2 W = 20 -162 = -142 dBW/m^2 locations of the satellites are 325.5E and 359E distance = S = R(2 - 2cos(359-325.5))^0.5 = 0.42R R is the distance of satellite from earth centre..

An inter satellite link is established between two satellites. One sa.pdf

shalins6

Circle the correct words At fertilization, eggs and sperm carrying signal ___ (alleles/genotypes) for each character combine to produce new ___ (alleles/genotypes) in the offspring. Solution Answer: At fertilization, eggs and sperm carrying single allele for each character combine to produce new genotype in the offspring. Explanation: During fertilization, gametes from the sperm (haploid, single allele for each character) combine with gametes from the egg (haploid, single allele for each character) to form a zygote (diplod, having two alleles, a new genotype formed for each character), the first cell of the offspring..

Circle the correct words At fertilization, eggs and sperm carrying s.pdf

shalins6

A small object is 25.0 cm from a diverging lens as shown in the figure(Figure 1) . A converging lens with a focal length of 12.2 cm is 30.0 cm to the right of the diverging lens. The two-lens system forms a real inverted image 17.0 cm to the right of the converging lens.What is the focal length of the diverging lens? Solution 1 / do2 + 1 / di2 = 1 / f2 1 / do2 = 1 / 12.2 - 1 / 17 do2 = 43.21 cm di1 = 30 - 43.21 = -13.21 cm For diverging lens 1 / do1 + 1 / di1 = 1 / f1 1 / f = 1 / 25 - 1 / 13.21 f1 = -28 cm.

A small object is 25.0 cm from a diverging lens as shown in the figu.pdf

shalins6

Cautions about experimentation and sampling? Solution When experimentation is done then following must be controlled. 1) Randomisation 2) Local Control 3) Replication (Repeteation) the sample must be collected in such a way that all the units in population are given equal chance to be included in the sample. The sample must represent all parts of the population when the population is not homogeneous..

Cautions about experimentation and samplingSolutionWhen exper.pdf

shalins6

CH30uz Lecture Which of the following is not true concerning the cell theory? Multiple Choice References vrchow asserted that all cels come from preexisting cels Schleiden determined that all plants are made of cells Schwann researched animal tissues and discovered that they were allmade of cels Hmienhiived the cels of cork Solution 1.Leeuwenhoek first used the term \"cells\" because Robert Hooke did that. 2.A multicellular organism is composed of many cells as all organisms have atleast one cell. 3.the general concept of life-is-cellular still holds since sometime in their life these organisms still utilize cells, but this shows cell membranes can be abandoned 4.all cells come only from other cells. 5.as cells get larger,their surface area decreases..

CH30uz Lecture Which of the f.pdf

shalins6

Below is a code segment for the Deleteltem function in an unsorted list implemented using a static array Fill in the blank sections of code to successfully implement a deleted item void UnsortedType::DeleteItem(ListItemType& item) There is at most one list item with the same key as item; there may be none. Post: No list element has the same key as item. int location = 0; int index; bool moreToSearch; more search = bool found = false; while switch (item.CompardTo(info[location])) case LESS: location^++ moretosearch = break; case EQUAL:....= true break; if (found) {info [location] = leanth^-- What is the running time of the Deleteltem operation? Solution A) 1.) false 2.) moreToSearch 3) True 4) True 5) found 6) item B) Time Complexity T(N) = O(N) C) template void UnsortedType::InsertItem(ItemType item) // item is in the list; length has been incremented. { NodeType* location; location = new NodeType; location->info = item; location->next = listData; listData = location; length++; }.

Below is a code segment for the Deleteltem function in an unsorted li.pdf

shalins6

A parts assembly station on a production line exhibits a severe vibration problem. A simplified schematic representation is shown in Fig. 4.26. Two large tables of mass m_1 and m_2 are each mounted to a sliding metal plate on resilient rubber mounts with shear stiffness K_1 and K_2, as shown. The tables are each subjected to a vibrational excitation force, F_1(t) and F_2(t). The plates are able to slide viscously on a second pair of deformable rubber mounts, with shear stiffnesses K_3 and K_4. The viscous sliding coefficients are B_1 and B_2. The two plates are coupled by a shaft with longitudinal stiffness K_5. Draw a linear graph for the system using the two forces F_1 and F_2 as inputs. Solution An assembly line is a manufacturing process in which interchangeable parts are added to a product in a sequential manner to create an end product. In most cases, a manufacturing assembly line is a semi-automated system through which a product moves. At each station along the line some part of the production process takes place. The workers and machinery used to produce the item are stationary along the line and the product moves through the cycle, from start to finish. Assembly line methods were originally introduced to increase factory productivity and efficiency. Advances in assembly line methods are made regularly as new and more efficient ways of achieving the goal of increased throughput (the number of products produced in a given period of time) are found. While assembly line methods apply primarily to manufacturing processes, business experts have also been known to apply these principles to other areas of business, from product development to management. The introduction of the assembly line to American manufacturing floors in the early part of the twentieth century fundamentally transformed the character of production facilities and businesses throughout the nation. Thanks to the assembly line, production periods shortened, equipment costs accelerated, and labor and management alike endeavored to keep up with the changes. Today, using modern assembly line methods, manufacturing has become a highly refined process in which value is added to parts along the line. Increasingly, assembly line manufacturing is characterized by \"concurrent processes\"—multiple parallel activities that feed into a final assembly stage. These processes require sophisticated communications systems, material flow plans, and production schedules. The fact that the assembly line system is a single, large system means that failures at one point in the \"line\" cause slowdowns and repercussions from that point forward. Keeping the entire system running smoothly requires a great deal of coordination between the parts of the system. Computer power has enabled tracking systems to become more sophisticated and this, in turn, has made it possible to reduce the costs associated with holding inventories. Just-in-time (JIT) manufacturing methods have been developed to reduce t.

A parts assembly station on a production line exhibits a severe vibra.pdf

shalins6

You are conducting a study investigating the effects of a high-fat d.pdf

shalins6

Which of the following is not a premise of the Koch’s postulates? A. The same microbe must be present in all cases of the disease in question. B. The microbe must be isolated from the infected organisms and grown in a pure culture. C. A test animal inoculated with the microbe from a pure culture should develop the disease. D. Several microbe species must be isolated in a pure culture from the samples of the test animal. Solution D. Several microbe species must be isolated in a pure culture from the samples of the test animal. Explanation: According to Koch the microorganism must be reisolated from the inoculated, diseased experimental host and identified as being identical to the original specific causative agent..

Which of the following is not a premise of the Koch’s postulatesA.pdf

shalins6

What is inclusion? Solution inclusions in biology means the following : In a cell the substances present in the cytoplasm. They can be fats or lipids like fat globules, carbohydrates like glycogen or crystals from the salts, pigments or coloring substances, water containing vacoules present inside the cell and they are the byproducts of the metabolism of the cells. sometimes they serve as nutrients for the cells. Some times in bacterial cells they constitively express the proteins or synthesise proteins and they will all form a aggregates and they are called inclusion bodies. The inclusion bodies or proteins are generally present inside the cytoplasm and very difficult to remove or break the aggregates and a very tedious procedures are required to disintegrate the proteins and fold them in proper conformations..

What is inclusionSolutioninclusions in biology means the foll.pdf

shalins6

What organ systems that work with the digestive system to deliver nutrients and eliminate wastes? Solution The digestive system helps in turning the food you eat into something useful for the body. The Organ system associated with digestive system to deliver nutrients and eliminate wastes are endocrine system, nervous system, Cardiovascular system, Urinary system, respiratory system and integumentary system..

What organ systems that work with the digestive system to deliver nu.pdf

shalins6

What are the major design considerations for secondary clarifers fol.pdf

shalins6

What is meant by composite pavement ? What is meant by composite pavement ? Solution COMPOSITE PAVEMENT STRUCTURE IS DEFINED AS A STRUCTURE COMPRISING MULTIPLE, STRUCTURALLY SIGNIFICANT, LAYERS OF DIFFERENT, SOMETIMES HETEROGENEOUS COMPOSITION. It is a pavement which is constructed with a rigid pavement as the lower layer and a flexible pavement surfacing or wearing course on the top or vice versa. The flexible (asphalt concrete) surface is designed to provide special functions such as frictional resistance, wear resistance, better traffic delineation, thermal insulation, and protection against adverse environmental effects.

What is meant by composite pavement What is meant by composit.pdf

shalins6

Use C++ Write a function to merge two doubly linked lists. The input lists have their elements in sorted order, from lowest to highest. The output list should also be sorted from lowest to highest. Your algorithm should run in linear time on the length of the output list. Provide an algorithm for your function Implement and show some samples of your running function Solution /* This is a C++ program to merge two sorted linked lists and produce a list in a Sorted order */ #include #include #include /* Link list node */ struct node { int data; struct node* next; }; /* This function is used to pull off the front node of the source and put it in destnation */ void letusMoveNode(struct node** destRef, struct node** sourceRef); /* This is a function used for performing merging of two linked lists.It takes two lists sorted in increasing order, and splices their nodes together to make one big sorted list which is returned. */ struct node* letssortlists(struct node* a, struct node* b) { /* Let us first have dummyone first node to hang the result on */ struct node dummyone; /*next the tail points to the last result node */ struct node* tail = &dummyone; /* As a result, tail->next is the place to add new nodes to the result. */ dummyone.next = NULL; while (1) { if (a == NULL) { /*we will check that if either list runs out, use the other list */ tail->next = b; break; } else if (b == NULL) { tail->next = a; break; } if (a->data <= b->data) letusMoveNode(&(tail->next), &a); else letusMoveNode(&(tail->next), &b); tail = tail->next; } return(dummyone.next); } /* letusMoveNode() function is a function which takes the node from the front of the source, and move it to the front of the dest. Before calling letusMoveNode(): source == {1, 2, 3} dest == {1, 2, 3} Affter calling letusMoveNode(): source == {3, 4} dest == {1, 2, 3, 4} */ void letusMoveNode(struct node** destReference, struct node** sourceReference) { /*This is the front source node */ struct node* newNode = *sourceReference; assert(newNode != NULL); /* now we will advance the source pointer */ *sourceReference = newNode->next; /*next we will link the old dest off the new node */ newNode->next = *destReference; /* Fineally we will move dest to point to the new node */ *destReference = newNode; } /* This IS A function which is used to insert a node at the beginning of the linked list */ void insertpush(struct node** head_reference, int new_data) { /* This is used to allocate node */ struct node* new_node = (struct node*) malloc(sizeof(struct node)); /* now we will put in the data */ new_node->data = new_data; /* The next step is to link the old list off the new node */ new_node->next = (*head_reference); /*Finally we will move the head to point to the new node */ (*head_reference) = new_node; } /* This is a function to print nodes in a given linked list */ void printList(struct node *node) { while (node!=NULL) { printf(\"%d \", node->data); node = node->next; } } /*This is the driver program to test ab.

Use C++ Write a function to merge two doubly linked lists. The input.pdf

shalins6

Using an intensity of 1 × 10-12 W/m2 as a reference, the threshold of hearing for an average young person is 0 dB. Person 1 and person 2, who are not average, have thresholds of hearing that are 1 = -14.0 dB and 2 = +23.0 dB. What is the ratio I1/I2 of the sound intensity I1 when person 1 hears the sound at his own threshold of hearing compared to the sound intensity I2 when person 2 hears the sound at his own threshold of hearing? Solution I = 1 * 10-12 * 10[dB/10] I1 = 1 * 10-12 * 10[-14 / 10 ] = 3.98 * 10-14 w/m2 I2 = 1 * 10-12 * 10[23 / 10 ] = 1.99 * 10-10 w/m2 ratio = (3.98 * 10-14) / (1.99 * 10-10) = 2.00 * 10-4.

Using an intensity of 1 × 10-12 Wm2 as a reference, the threshold o.pdf

shalins6

Tissue regeneration is an emerging and exciting biomedical field. As a scientist, choose either an adult stem cell population or embryonic stem cells as a model system to develop a technique for growing artificial limbs in culture. Be sure to explain why you chose your particular stem cell and the drawbacks associated with the one that you did not choose for your experiments. Solution In tissue regeneration scientists choose only embryonic stem cells as a models system to develop a technique for growing artificial limbs in culture. In case of salamanders have unusual and very desirable characteristics of being able replicate limb. When salamanders loses a limb does not form scab. Instead a wound epidermis forms it known as apical epithelial cells they form blastema. This knob of stem cells is then able completely regenerate the limb, these blastemata like MRL mice act as embryonic stem cells. Embryonic stem cells: 1. It is pluripotent i.e., differentiate into 3 of the primary germ layers (ectoderm, endoderm, mesoderm) this indicates that embryonic stem cells can potentially differentiate into adult human cell if stimulated right way Drawbacks of adult stem cells: 1.It is multipotent meaning that each can only produced limited cell type. 2. Unlike embryonic stem cells, they are much scarcer and harder to culture so its not choosen by scientist to develop for growing artificial limbs in culture..

Tissue regeneration is an emerging and exciting biomedical field. As.pdf

shalins6

The preeminent American naturalist of the late 1800s was Charles Darwin. Charles Wyville Thomson. Victor Hensen. Alexander Agassiz. Edward Forbes. The first marine biology laboratory was: the Scripps Institute of Oceanography. the Marine Biological Laboratory at Woods Hole. the Rosenstiel School of Marine and Atmospheric Research. the Friday Harbor Laboratories. the Duke University Marine Laboratory. An early marine biology expedition to the North Pole was led by: Sir Alistair Hardy. Alexander Agassiz. Fridtjof Nanson. Charles Wyville Thomson. Robert Peary. An early marine biology expedition to study Antarctic whales was led by: Sir Alistair Hardy. Alexander Agassiz. Fridtjof Nanson. Charles Wyville Thomson. Louis Agassiz. The scientific method can be best described as: implementing an experiment. inductive and deductive reasoning. collecting data from the laboratory. an orderly set of procedures for learning about and interpreting the world. a rig Solution 7. The preeminent American naturalist of late 1800s late was Alexander Agassiz. 8. The first marine biology laboratory was the Marine Biological Laboratory at woods Hole. 9. An early marine biology expedition to the North Pole was led by Fridtjof Nanson. 10. An early marine biology expedition to study Antarctic whales was led by Sir Alistair Hardy. 11. The scientific method can be best described as an orderly set of procedures for learning about and interpreting the world. .12. The first step in the scientific process is making observations. 13. For a scientific theory to enjoy broad acceptance by the scientific community it must be based on numerous observations and have one or more hypothesis that have been tested and accepted..

The preeminent American naturalist of the late 1800s was Charles Dar.pdf

shalins6

The LS and LF are calculated using the backward pass through the network. forward pass through the network. values for ES and EF. backward and forward pass through the network backward pass through the network. forward pass through the network. values for ES and EF. backward and forward pass through the network Solution The late start time LS and the Late finish time LF are calculated using the Early start time ES and the early finish time EF. So third option is correct.

The LS and LF are calculated using thebackward pass through the ne.pdf

shalins6

More from shalins6 (20)