Monthly Archives: April 2017

Made my day!

digøkskjermI just got the message that the new bachelor program Informatikk: Digital Økonomi og Ledelse (Informatics: Digital Economics and Management) is now the most sought-after study program in Norway, with 19 applicants per available place (514 first-priority applicants for 27 available places).

Since I have taken the initiative to this program and developed it with colleagues at the University of Oslo (where I have an adjunct position, this definitely made my day. Week, actually.

Just sayin’…

What to do in Oslo (and Norway) in summer

Yesterday I got an email from an old friend and former colleague who is visiting Norway and wondering what to see and do. His is not the first email of that kind – and it dawned on me that the rational and productive thing to do (well, it is early Sunday morning and I am still undercaffeinated) is to write this up as a blog post. (Did the same thing for my Norwegian friends asking me about what to do in Boston.) So – what would I recommend if you should find yourself in Oslo during the summer, with some time to look around?

First of all, you need to understand a few basic things about Norway. Norway has lots to recommend it, but we are mainly about nature – while Oslo, Bergen, Trondheim and some of the other cities are nice, they are a bit like a one-star Michelin restaurant – worthy of a stop, but not destinations in themselves. To appreciate Norway, you need to appreciate nature and natural beauty – and be willing to put in some effort to see it. On that note:

So: If you are going to Norway, pack good shoes, rain gear, basically the light hiking setup. You may not need it, but you certainly won’t regret packing it. As the saying goes here, there is no such thing as bad weather, only bad clothing. And we mean it.

Oslo

Caveat: I like to list things that are (arguably, somewhat) unique to Oslo. We have nice cafes and tolerably good museums (such as the National Gallery), but those you will find in any capital in Europe. Most people who come here do it for a short visit – and you want to stay away from that which is mostly for the tourists and not different from anywhere else in Europe. So, here is where I take my (mostly) American friends:

  • norway-vigeland-sculpture-park-8The Vigeland park (or Frogner park). This is the world’s largest sculpture park dedicated to one artist, Gustav Vigeland. And, as every American says who has been there – they are all naked! Vigeland was a pupil of Rodin and the sheer size and rather playful humor of the place is enjoyable and a sure hit with the kids. (My favorite: The little girl who, unseen by her parents, is picking up a snake. See if you can find it.) One of Oslo’s city symbols is “Sinnataggen”, a little boy having a tantrum. This is also where people in Oslo go to relax and hang out if the weather is good, so you might see some locals.
  • 10414The Holmenkollen ski jump, especially if we can throw in a little walk in the woods. The ski jump is impressive in itself (though ski jumping is no longer the enormous draw it used to be for Norwegians) and you get an excellent view of Oslo. There is a zip line if you feel adventurous. But, to really have a Norwegian experience in the sense of doing something the locals like, walk from Frognerseteren to Tryvannsstua (pictured, about 3 km) or Skjennungstua (5 km, view, delightful pastries) to get a sense of Oslomarka. Oslo is 63% protected forest, with gravel roads, paths and (in winter) hundreds of kilometers of prepared ski tracks. Heavily used by the citizens of Oslo and surrounding municipalities.
  • The Munch museum, a bit run down, will probably move to a new building in 2018/19 [closed for moving to new location 2019] but the paintings are, of course, worth seeing.
  • Exhibition_in_Viking_Ship_Museum,_Oslo_01The Viking Ship museum. The museum itself is crowded and due for an update, but it is the only place in the world, as far as I know, where you can see a complete, real Viking ship. Worth the trip. If you are feeling energetic, there are lots of other museums (at the Bygdøy peninsula, take a boat there from the City Hall). I have taken people to the Folk Museum a lot – mainly because two of my daughters have had summer jobs there and can provide an inside perspective – but it requires a deeper interest in folklore and rural history than most people have (but if you go there, make sure to sample the Hardangerlefse, cooked over open fire. Carbs galore.) There is the Fram and Kon-Tiki museum, as well, though I haven’t been for many years. Plus Huk, a nice beach, if you feel like a dip.
  • The Ekebergparken sculpture park, a relatively new sculpture park donated by property investor and man-about-town Christian Ringnes. The park itself is more of a lightly edited forest than an art installation, but it works well, and the collection (themed as an homage to women) is very good. And the view of the city is excellent – this is, quite literally, where The Scream was painted. (There is a metal frame at one point where you can take photos recreating the painting yourself. Including screaming.)
  • 1920px-full_opera_by_nightExplore the fjord – Oslo is built around the fjord, and if you can get on a boat – even just taking a summer ferry out to some of the islands – by all means do it. (I live on an island, perhaps I am a bit partial here.) In later years, the city has tried to make the shoreline available for walking (a project called Fjordbyen) and it works rather well. The high point, of course, is walking on the roof of the Oslo Opera House, but the Akershus Fort and just hanging out slowly sipping a cold (and expensive) drink while ogling the historical boats you find here and there is nice, too.
  • Møllerfossene i AkerselvaExplore Oslo by bike or foot. The urban bike project is pretty good, you download an app to your smartphone and check out and in bikes from many places. Best path: Along Akerselva. Grünerløkka (partially along the river) is the “bohemian” (well, gentrified) district, Frogner is more upscale, Grønland for immigrant food and culture, and Gamlebyen for history.
  • Eat at a restaurant. Food is somewhat expensive, drinks horribly expensive, but the quality is very high. My personal favorite is Kampen Bistro, a semi-hidden neighborhood restaurant/community house with a semi-fixed menu and the world’s best cheese platter. But you will find lots of good food and a constantly changing set of restaurants – Google for a list. (Alternatively: My friend Bill Schiano once spent most of a day walking from bakery to bakery all over town, a very happy man.)
  • If you want to say you have seen something not many Norwegians have seen: The Emanuel Vigeland mausoleum, created by Gustav Vigeland’s, well, rather eccentric brother. Opening hours are complicated, but if you have been there, you have definitely seen more of Oslo than most people.

Norway outside Oslo

Well, now it gets difficult. There are, literally, hundreds of web pages devoted to Norwegian tourist spots, from Prekestolen to Trolltunga to Hurtigruten to Flåmsbanen to whatever. They are all fantastic, but since you can read about them in lots of detail there and also plan your route via visitnorway.com and other sites, I will stay away from the obvious choices, and, again, go for something a bit more hidden and for the local (though not very hidden.)

bamsemums_smallExtremely important warning: In addition to the weather and clothing issue mentioned above, Norwegian culture is fundamentally built on the principle that you, yourself, and nobody else, is responsible for being knowledgeable and physically capable of doing whatever you set out doing. Norwegians do not believe in protecting people against their own stupidity. (And forget about suing anyone, you’ll be laughed out of court.)

Norwegians are quite cynical about this. Do not expect there to be signposts and security fences in the mountains or along the fjords – but if there are, obey them religiously, because they denote real dangers, not risks of lawsuits. Every year, some tourist will fall off Trolltunga or Vøringsfossen, step too close to a calving glacier or drown in a fjord because they did not have the wits, skills or equipment necessary. That is considered to be the tourists’ fault. At Svalbard, tourists are referred to as “Bamsemums” (a popular foam-bear-covered-in-chocolate candy) because of their propensity to end up as polar bear lunch, on account of going where they are not supposed to without a gun. Something of the same spirit prevails in most of Norway, though in some places (such as Trolltunga), the local authorities are thinking about fencing things in a bit, mostly because it is so expensive to haul the bodies out.

Yes, I am exaggerating a bit. But not much.

With that out of the way: The best way to see Norway is to amble around (preferably in an electric car), stop whenever you feel like it, and (thanks to the Viking-age freedom to roam) go for a walk in your hiking shoes. Norway is all about nature, and there is so much of it that practically anything is worth seeing. That being said: The south coast is mellow and sunny and idyllic, the west coast is spectacular with deep fjords and high mountains, the North (north from Trondheim, that is) goes from New Zealand fjords to Alaskan tundra. The Eastern forests offer opportunities for canoeing and fishing, if you are into that. The mountains in the middle have peaks and glaciers and mountain huts, managed by the truly wonderful Norwegian Tourist Association. Explore at your leisure, spend time, and above all, do not feel forced to see the famous sites, when you can find something almost as good quite close.

I have never been to Geiranger, for instance. (But I haven’t seen Star Wars either.)

As for recommendations, here is a fairly random list of things I like:

  • knutshøMountaineering is great, but where to go if you don’t have much time? Some suggestions from Jotunheimen (but there are thousands of others):
    • Knutshø (pictured, steeper than it may look) is dramatic, close to the road, has fantastic views, and there are not many people there. Perfect one-day walk: Park the car and do it, walk along the ridge, return along the lake on south side. Great view of Besseggen.
    • Bitihorn is another, less dramatic alternative.
    • If you want to get above 2000 meters, try Rasletind.
  • The Rosendal Barony is breathtakingly beautiful, as is the view. Not far away (south of Odda there is a path up to Buarbreen, a part of Folgefonna, nice walk to a glacier.)
  • If you don’t fancy walking, taking the boat from Gjendesheim to Gjendebu and back is worth it. While reading Three in Norway by two of them.
  • Solvorn is a sleepy little hamlet with a fantastic little family hotel called Walaker. From there, you can drive to Veitastrond and Tungastølen (damaged in heavy weather in 2011, will hopefully reappear with fantastic new architecture) and walk in to Austerdalsisen (fantastic glacier views, while they are still there.)
  • While I am at it – the Glacier Museum in Fjærland is worth a visit. As well as the nearby glacier (mind your step.)
  • Ålesund is a beautiful little coastal city which burned in 1904 and was rebuilt in Art Noveau style. Many Norwegian cities were architecturally brutalized in the sixties and later, but Ålesund has kept its style.
  • bakklandetTrondheim is nice – and Baklandet Skydstation has been named the best cafe in the world several times. I love it. And it is close to the only bike lift I know of. Trondheim is a university town – primarily the technical university, Norway’s MIT.
  • Bergen is nice – the whole city – perhaps with an exception for the fish market, which has transmogrified from local and lively market to a canned tourist experience the last few years. Will probably be fixed. Take a tram or cable car to the surrounding hilltops*.
  • The south coast has lots of beautiful little towns with white-painted “skipper” houses. I like them all – Lillesand, Grimstad, Arendal, Tvedestrand, Risør, Kragerø – but if you somehow can get to Lyngør, it is absolute perfection in summer.
  • Tromsø has nightlife and nature and the most active local patriots in Norway. And that is saying a lot.
  • I quite like the Henrik Sørensen museum near Holmsbu.
  • Svolvær and Lofoten and the other Hurtigruten things are fantastic, of course, don’t misunderstand me, but they tend to fill up.
  • Fishing is, apparently, fantastic. (I don’t fish myself…)

A few notes:

  • You cannot see the northern lights in the summer. Sorry.
  • Nor the midnight sun in the winter.
  • Norway is expensive and service is friendly but overstretched (we have near wage equality and employees are very expensive…). Do not expect fawning service, even at fancy hotels.
  • pictures_funny2_grandeNorwegians are rather reserved and have a fairly expansive sense of personal space. When the other people at the bus stop are keeping their distance to you, it has nothing to do with you. It’s them. (See The Social Guidebook to Norway for further information).

And that is that. Comments welcome. More to follow as I remember things.

PS: Found this video with Morten Rustad’s 10 favorite places in Norway. I spent much of my summers as a boy in Valdres and Jotunheimen and agree with him. But note also: Solitude and challenge is a plus, crowds a minus, for the quintessential Norwegian tourist/explorer:

*No, not mountains. I Norway, any mountain with trees on top is a hill, no matter how steep or tall.

Notes from ACM Webinar on blockchain (etc.)

The Next Radical Internet Transformation: How Blockchain Technology is Transforming Business, Governments, Computing, and Security Models

Speaker: Mark Mueller-Eberstein, CEO & Founder at Adgetec Corporation, Professor at Rutgers University, Senior Research Fellow at QIIR

Moderator: Toufi Saliba, CEO, PrivacyShell and Chair of the ACM PB Conference Committee

Warning: These are notes taken live. Errors and omissions will occur. No responsibility whatsoever.

  • intro: old enough to remember the discussions in the early 90s about how the internet would change mail services – completely forgetting shopping, entertainment and others
  • Blockchain solves the problem of transferring value between Internet users without a third party
  • goes beyond the financial industry, can handle any kind of transaction
  • most of the world has access to a mobile phone, only about 20% has access to the banking system
  • Blockchain is the banking industry’s Uber movement
  • Blockchain much wider than Bitcoin, will facilitate new business models.
  • Blockchain transfers rather than copies digital assets, making sure there is only one instance of it.
    • settlement process: no clearing houses or central exchanges
    • peer-to-peer transfers, validation by network
  • Example: WeChat taking over payments in China, no link to banks
  • many commercial or government services are basically “databases” that are centrally managed, with one central point of failure
  • Blockchain allows a distributed ledger, information put in cannot be changed
    • Estonia thinking about a Blockchain in case of hacking or occupation
  • public (open), private and government blockchainsxx1
  • allows new services to existing customers, lots of inefficiencies up for grabs
    • estate records, voting, domain control, escrow, etc…
    • iPayYou allows use of Bitcoin
    • Walt Disney looking at Blockchain (DragonChain) for internal transfers, also use it for tracking supply chain to their cruise ships. Opensourced it.
  • 80% of Bitcoin mining done in China
  • regulation comes with a cost
  • Shenzhen want to be Blockchain Tech capital
  • 6-level security model, developed by William Mougayar (goes through it in detail: transaction, account, programming, distributed organizations, network (51% attacks, perhaps as low as 30%, smaller blockchains more vulnerable), governance)
  • Ethereum blockchain focusing on smart contracts: Hard forked in 2016, DAO issue where somebody hacked DAO code to siphon off money, hacking the program using the blockchain (not the blockchain),
  • credit card transaction can take up to 30 days, with disputes and everthing, Blockchain is almost instant
  • How “real” is blockchain technology
    • Goldman-Sachs invested $500m+
    • 15% of top global banks intend to roll out full-scale, commercial blockchain
    • etc.
  • what is holding it back?
    • difficult to use, understand, buy in; perception of risk and legality
    • difficult to see value for the individual
  • questions:
    • what are the incentives and adoption models?
      • different philosophies: computing power must be made available in the network: industrial mining vs. BitTorrent model, the amount of computing provided will be important, if we can find a model where just a little bit from every mobile phone is required
    • what are the hard costs of Blockchain?
      • you can google the costs. There are other approaches being developed, will post some links
    • can Blockchain be compromized by a virus?
      • theoretically, yes. Bitcoin is 10 years without, open source means verification (change is happening slowly because of code inspection)
      • comes back to incentive and governance model
  • and that was that…recording will be at webinar.acm.org in a few days.

Case teaching in Vienna

quantI have been asked to give a keynote speech at a conference on case teaching in Vienna, at the The University of Applied Sciences BFI. This is quite an honor, and I am very much looking forward to it.

Should you happen to want to be in Vienna and focus on case teaching on May 19 – well, I hope to see you there!

SmartHelp – geolocation for crisis situations

I am on the board of SmartHelp – a platform for crisis communication for emergency services (or, indeed, for any company that needs to locate its assets or employees in a hurry). The platform has been running in production in two emergency services (fire and ambulance) in Trondheim, Norway, since December 2014. It allows the public to contact the emergency service via a Smartphone interface, give precise details about where they are automatically, and also to chat and share their medical information (fully encrypted up to a medical standard.)

Here is a video demonstrating how the system works:

We are currently seeking partners for marketing and further developing this platform outside the Norwegian emergency service market. Please contact me (self@espen.com, +47 4641 0452) or Fredrik Øvergård, CEO (fredrik@radvice.no, +47 977 32 708)  for further information.

Effective student feedback

In our book Teaching with cases: A practical guide, Bill Schiano and I talk at a fairly high level about how to give effective student feedback by using a spreadsheet and personalized emails. Our argument is that by giving every student individual feedback in addition to the grade, you reduce the number of grade justification requests and complaints. This blog post is a detailed guide on how to do it – too detailed for the technically inclined, probably, but we all have to start somewhere.

You probably already have all the tools you need on your computer – a spreadsheet and an email client that works with your spreadsheet – such as Excel and Outlook, for example. (For myself, I use Excel and SerialMailer, a cheap serial mail client for Mac.) You can probably use online software as well, for instance a Google spreadsheet (which is nice because editing by more than one teacher is easy) and Gmail, though I have never tried it.

The idea is to use the spreadsheet to organize all your feedback, and to set it up so you use as little time as possible to give as much feedback as possible. I will demonstrate this, with an example for a fictitious course with three in-class sessions (with participation grading, 40% of grade), an individual written examination (30% of grade), and a group assignment (30%). I will show the various details of building the spreadsheet below – if you want to skip ahead and inspect the thing your self, I have made it available for downloading.

I start with a spreadsheet of students and email addresses, provided to me by the administration or downloaded from our LMS. Let’s say it looks something like this:

1eval

(If I have the time or can get the administration to create it from their databases, I ask to have first and last names in separate columns. For this demonstration, I won’t bother.)

Then I add columns for each of the assignments that I am going to grade:

2eval

(In this example, the individual examination has six questions, of which the students should answer four.)

For the group project, I create a separate sheet (in the same workbook, called “Groups”

3eval

The group sheet is exceptionally simple, just group number, points and comment. If you have several group assignments, this is where you will put them:

4eval

Note that I also create a group numbered 0. This is what I use for students who drop the course or don’t do the group assignment.

With that done, I assign students to groups in the Students sheet…

5eval.jpg

…and then I am ready to start teaching my course.

As the course rolls along, I enter points and comments for each student. As mentioned in the book, it is extremely important that you do the participation evaluation immediately after each class. I tend to give the students a score of 1-3, sometimes 1-6, with some definition. As I will show later, what scale you use does not really matter, as you can normalize them to whatever you want later in the process.

Anyway, assume the course is finished, and you have entered comments and points for everything – for the individual student, in the Student sheet….

7eval.jpg

…for the groups, in the Groups sheet:

6eval

To finish the evaluation part (we’ll get to communication later), you need to a) match the group points and comments to each individual student, b) calculate a final score for each student, and c) determine the letter grade for each student.

First: Group grades and comments. For a small class like this, this is probably a bit of overkill – you could just copy comments and points over to each individual student. But doing it the way I show here has the advantage (aside from being correct from a database administrator’s point of view) of error-correction (any error you make will be systematic and therefore easily spotted) and repeatable (the first time you do this, it is a chore, the second time, you just copy your previous spreadsheet and fiddle with it). Moreover, if you have a class with more than 40 students, a bit of “programming” saves time and effort. (I have done this for classes of 350 students, a situation where participation grading is not really possible – except as a small reward for exceptional students – but where the group feedback mechanism becomes extremely valuable.)

So, first – link individual students with their group’s scores and comments, using the LOOKUP function:

8eval

The formula is

           =LOOKUP($E2;Groups!$A$2:$A$8;Groups!B$2:B$8)

and what it does is take the student’s group number (E2), look it up the first column of the “Groups” sheet (Groups!$A$2:$A$8), using fixed references to be able to copy the formula to the rest of the sheet, and displaying the group score (which is in column Groups!$B2:$B8). This nicely picks up all the group scores and comments:

9eval

We now have all the information for each student, then we have to calculate the various scores. We have the exam score already (the average of the exam points) and the participation score (a sum of the score for each session.) We now need to calculate the total points, which isn’t too hard: The max for participation is 9, for the others it is 10, so the formula for the total will be:

01eval

         =(W2*0,3)+(O2*0,3)+(J2*0,4*10/9)

(I use comma as a decimal delimiter, parentheses for readability). We can now add a student ranking in the G column (students are always interested in this, so why not tell them?)

02eval

Now we are ready to set the grades. The simple way to do this is to sort the students by their scores (or rank, if you will):

03eval

How you set the letter grades is up to you, of course, but it helps to have the students sorted. I set grades by starting at the top, trying to get a reasonable distribution, and make sure that I don’t use absolutes so that some unlucky student narrowly misses a better grade. Let’s say we end up here:

04eval

Now we are ready to communicate the results to the students. We will do that by writing a letter to them, composed largely of common text (i.e., feedback that is the same to all students), and them use the mail/merge function of word to merge in the individual details from the spreadsheet.

1feed

Example letter using SerialMailer

As said above, I use a product called SerialMailer on my Mac. The concept is simple: You write the letter, link to the spreadsheet, and insert field names into the text. When the letter is sent out (or printed), the field names are substituted for the values for each individual student.

Here is how to do it in Word (if you want to send it out via email, you need to have Outlook as well.):

First, open Word and write the letter:

2feed

(As you can see, I recycle much of my texts…)

Let’s start by replacing “student” in the opening salutation with the student’s name. Then you open the Mailings tab in Word and hit Select recipients from an existing list…

3feed

…and select your spreadsheet:

000ff

I get this message, click OK:

5feed

And open the “Students” sheet (i.e. the individual sheet):

6feed

If you click “Insert Merge Field” now, you should get a list of the column headings in the spreadsheet:

7feed

Delete the word “student”, choose “Insert Merge Field” and choose “Name”, and the field code will be in the document:

8feed

If you hit “Preview Results”, the code will be replaced by the content for each student:

9feed

Now write field labels and insert the fields you want to share with the students. I like to add the listing at the end of the letter, but you can do whatever you want:

1ff

Hit Preview, and this is what each student will see:

2ff

And there you go. Now hit “Finish and Mail Merge”, and select whether you want to print the documents on paper (or PDF) or send them out via email (shown).

3ff

You must tell Outlook where the email addresses are in the spreadsheet:

5ff

Then specify a subject and choose HTML Message (if you want formatted text):

6ff

…and, well, this is where I will have to stop, since I do not use Outlook. But trust me, it works well, the students love having individualized feedback, and it really isn’t that much more work than just providing the grade. As an added bonus: If students want a grade justification, you can just tell them that they already have it…

(Corrections and feedback welcome, of course.)