omniomni/omni-engineering huggingface dataset:
Screening information dataset. A screening information dataset (SIDS) is a study of the hazards associated with a particular chemical substance or group of related substances, prepared under the auspices of the Organisation for Economic Co-operation and Development (OECD). The substances studied are high production volume (HPV) chemicals, which are manufactured or imported in quantities of more than 1000 tonnes per year for any single OECD market.

The list of HPV chemicals is prepared by the OECD Secretariat and updated regularly. As of 2004, 4,843 chemicals were on the list. Of these, roughly 1000 have been prioritised for special attention, and SIDS are prepared for these chemicals, usually by an official agency in one of the OECD member countries with the collaboration of the UN International Programme on Chemical Safety (IPCS).

The procedures for investigating the risks of an HPV chemical are described in the OECD Manual for Investigation of HPV Chemicals. The initial stage is the collection of existing information (either published or supplied by manufacturers) on the chemical. If the existing information is insufficient to make an assessment of the risks, the chemical may be tested at this stage to collect more data. The initial report of the investigation is discussed at a SIDS initial assessment meeting (SIAM), which includes: 
representatives of OECD member countries 
experts nominated by the IPCS, the OECD Business and Industry Advisory Committee, Trade Union Advisory Committee, and environmental organizations
 representatives of companies which produce the chemical
 secretariat staff from OECD, IPCS, and UNEP chemicals
The SIAM can either accept the draft report or call for revisions (including further testing). Once the comments and discussion of the SIAM have been taken into account, the report is published by the United Nations Environment Programme (UNEP).

The possibility of new testing to complete the study is what distinguishes SIDS reports from similar studies such as Concise International Chemical Assessment Documents (CICADs). In this sense, SIDS are similar to European Union Risk Assessment Reports (RARs). The distinction is that the SIDS programme is specifically aimed at HPV chemicals, while the chemicals selected for EU RARs are chosen more on the basis of a hazard profile, so include chemicals with much lower production volumes.

References

External links
List of Screening Information Datasets (SIDS)
Chemical Safety page of the OECD Environment Directorate
International Programme on Chemical Safety
SIDS available through the Chemicals Branch of UNEP

Chemical safety
Out-of-order delivery. In computer networking, out-of-order delivery is the delivery of data packets in a different order from which they were sent. Out-of-order delivery can be caused by packets following multiple paths through a network, by lower-layer retransmission procedures (such as automatic repeat request), or via parallel processing paths within network equipment that are not designed to ensure that packet ordering is preserved. One of the functions of TCP is to prevent the out-of-order delivery of data, either by reassembling packets in order or requesting retransmission of out-of-order packets.

See also 
 Packet loss
 Selective ACK
 IP fragmentation
 Head-of-line blocking

External links 
 , Packet Reordering Metrics, A. Morton, L. Ciavattone, G. Ramachandran, S. Shalunov, J. Perser, November 2006
 , Improved Packet Reordering Metrics, A. Jayasumana, N. Piratla, T. Banka, A. Bare, R. Whitner, June 2008 
 https://web.archive.org/web/20171022053352/http://kb.pert.geant.net/PERTKB/PacketReordering
 http://www-iepm.slac.stanford.edu/monitoring/reorder/
 https://www.usenix.org/conference/nsdi12/minion-unordered-delivery-wire-compatible-tcp-and-tls

Packets (information technology)
T-top (boat). A T-top is a type of top for center console boats that is built with a T-shaped structure when viewed from the side. The top is tall enough to stand under, and provides shade and rain protection for two or more passengers at the boat's helm. The T-top is distinguished from other boat tops in that the entire structure is attached to the center console area, with no support brackets or straps connected to the outside of the boat, thereby providing 360-degree access around the boat for fishing and water activities.

Generally, T-tops are constructed from a high-quality marine aluminum extrusion which is anodized for appearance longevity. The anodized aluminum extrusion requires a specific welding machine to assemble, usually a welding machine with pulse and square wave capacity. Marine extrusion is the lightest and most durable material for T-top construction.

Stainless steel is also an optional material for construction. It is much heavier, more difficult, and costly to build, and may not have the structural durability or flexibility of its aluminum counterpart. However, it is often seen to be much more attractive.

References 

Water sports equipment
Hachmeister-Lind. Hachmeister-Lind was a Pittsburgh-based chemical maker and auto parts business, which applied mirror finishes to a portion of auto light bulbs. The treated light bulbs, called Perfect-o-Lite, cut down the glare of the lights and directed the beam over a wider area of the road. The company operated during the Great Depression in the 1930s. It had a physical address at 211 Wood Street and a mailing address at Dept. L-570, in Pittsburgh.

Diverse inventory

The corporation also maintained a light and mastic tile division. A separate department
manufactured different kinds of plasters used in wall finishes. Aside from floor coverings and lights,
the company sold more than 600 chemicals. The most significant chemicals it made were used in the electroplating industry.

Profitability

In the latter half of
1931 Hachmeister-Lind's earnings amounted to $30,000 per month, or, approximately $244,686 for the full year. This widely exceeded the firm's 1930 revenue, which totaled $133,247.

Radio sponsor

Hachmeister-Lind sponsored episodes of The Shadow during January and February 1932.

Bankruptcy

The company filed for bankruptcy in August 1934, in Federal District Court of the western district of Pennsylvania. Its address at the time was
Island Avenue and Leonard Avenue in McKees Rocks, Pennsylvania.

References

External links
Hachmeister-Lind Ad, Circa 1935, retrieved on August 27, 2009.
Hachmeister-Lind Ad from Popular Science, August 1931 retrieved on August 27, 2009.

Manufacturing companies based in Pittsburgh
Chemical companies of the United States
Defunct automotive companies of the United States
Defunct manufacturing companies based in Pennsylvania
Renard R.35. The Renard R.35 was a prototype pressurised airliner of the 1930s built by the Belgian aircraft manufacturer Constructions Aéronautiques G. Renard.  A three-engined low-winged monoplane with retractable undercarriage, the R.35 was destroyed in a crash on its first flight.

Development and design

In 1935, Alfred Renard, chief designer and co-founder of the Renard company, started design of a pressurised airliner for use by SABENA on its routes to the Belgian Congo.  Renard designed a low-winged monoplane of all-metal construction, powered by three engines as required by SABENA, and received an order for a single prototype on 3 April 1936.  The R.35 had a circular section fuselage, housing a pressurised cabin which accommodated twenty passengers and a flight crew of three. It was intended to be powered by a range of radial engines with the 950 hp (709 kW) Gnome-Rhône 14K preferred by Renard, but the prototype was fitted with 750 hp (560 kW) Gnome-Rhône 9K engines.

The R.35 was completed early in 1938. On 1 April 1938, it was planned to carry out high-speed taxiing trials at Evere airfield in front of an audience of visiting dignitaries and journalists. After carrying out a single taxi-run, however, the R.35 took off during a second run, and while attempting a circuit to return to the runway, the R.35 dived into the ground and was destroyed, killing the pilot Georges Van Damme. The cause of the crash was unknown. Following this crash, SABENA abandoned its interest in the R.35, and Renard abandoned development.

Variants
R.35B
 Proposed bomber version, capable of carrying 2,800 kg (6,200 lb) of bombs. Unbuilt.

Specifications (performance estimated)

References

Notes

Bibliography
De Wulf, Herman. "A Belgian Rare Avis". Air International, September 1978, Vol 15 No. 3. Bromley, UK: Fine Scroll. pp. 147–149.

External links

photo
RENARD R-35

R.35
1930s Belgian airliners
Trimotors
Low-wing aircraft
Aircraft first flown in 1938
Institute for Affordable Transportation. The Institute for Affordable Transportation (IAT) is a non-profit organization located in Indianapolis, Indiana, USA.  The IAT is devoted to developing high-quality, low-cost transportation to provide mobility, freedom and economic hope to people in rural areas of developing countries. This involves a class of transportation known as a Basic Utility Vehicle (BUV).  BUV's are designed to provide mobility, freedom and economic hope to people in rural areas of developing countries.  The BUV can promote trade and sustainable development by allowing micro-business growth and trade at a grassroots level.

In order to engage young engineering and technology talent, the IAT has enlisted educational institutions in the design and development of BUV's.  Other universities are involved with the IAT initiative in marketing research to calculate costs, target market, distribution, location, service and logistics issues.

Will Austin, the Executive Director of IAT, began working full-time on the BUV design in April 2000 and founded the Institute for Affordable Transportation as a 501(c)(3) public charity shortly thereafter.  IAT is funded by individuals, foundations, churches, and international corporations.

See also
 Basic Utility Vehicle
 Student Design Competition

External links

References
http://mywebtimes.com/archives/ottawa/display.php?id=262605
http://www.accessmylibrary.com/coms2/summary_0286-13323636_ITM
http://www.accessmylibrary.com/coms2/summary_0286-25961065_ITM

Sustainable transport
Dial box. A dial box is a computer peripheral for  direct 3D manipulation e.g. to interactively input the rotation and torsion angles of a model displayed on a computer screen. Dial boxes were common input tools in the first years of interactive 3D graphics and they were available for Silicon Graphics (SGI) or Sun Microsystems and sold with their workstations. Currently they have been replaced by   standard computer mouse interaction techniques.

A standard dial box has eight jog wheels mounted on a plate. The plate is set upright with the help of a stand and usually located next to the computer screen for convenient access. The connection to a computer is made via the serial port (RS-232).

One of the fields of application for dial boxes was molecular graphics.

Dial box models

At least two different models of dial boxes were sold with the SGI brand. 

DLS80-1022 (SGI part number 9980992) was made by Danaher controls, has 8 large dials and a single DE-9 connector which contains both the power and data pins. The connection to the computer serial port the dial box power supply is made with a special DE-9 – DE-9, DIN-5 splitter cable. Essentially the same dial box was also sold as the Sun Microsystems DLS80-1012, part number 370-1223-01.

The Japanese made SGI SN-921 (type number 9780804) has somewhat smaller dials. It has a separate 5 V power supply connector in addition to the DE-9 serial connector, but it also needs a serial cable with a custom pinout  .

See also
Jog dial

External links
 Configuring SGI Dials for OSX
 Xorg input driver for SGI dial box
 Python code for reading values from a dial box
 SGI dial box cable pinout
 

Computer peripherals
Molecular modelling
Open Catalog Interface. Open Catalog Interface (OCI) is an open standard for a software interface developed by SAP for punch-out catalogs that connect buyers' procurement systems with suppliers' eCommerce systems. OCI is an alternative to cXML.

It is used by SAP Supplier Relationship Management, Microsoft Dynamics AX and other Enterprise resource planning and purchasing systems when connecting to external punch-out catalogs. In the open catalogue project Open Icecat, a separate OCI is defined for the exchange of multimedia data between multilingual product catalogs.

The OCI format is used to define the field mapping between the supplier's catalog and the SAP SRM shopping cart, to ensure that the data is transferred accurately and completely between source and receiver.

References

External links
 Catalog Interface (OCI - Open Catalog Interface) from the SAP Help Portal

SAP SE
Interfaces
JNR Class D61. The  is a class of six 2-8-4 steam locomotive built by the Japanese National Railways (JNR) in 1960 and 1961. They were redesigned by Hideo Shima and rebuilt at JNR Hamamatsu Works and Kōriyama Works .

The D61 was a rebuild of the JNR Class D51, which had a 2-8-2  wheel arrangement.

List Of Class D61

 D61 1 (Rebuilt From D51 640 in 1960 at Hamamatsu Works)
 D61 2 (Rebuilt From D51 555 in 1960 at Hamamatsu Works)
 D61 3 (Rebuilt From D51 181 in 1960 at Hamamatsu Works)
 D61 4 (Rebuilt From D51 224 in 1960 at Hamamatsu Works)
 D61 5 (Rebuilt From D51 205 in 1961 at Kōriyama Works)
 D61 6 (Rebuilt From D51 519 in 1961 at Kōriyama Works)

Preserved examples
, one Class D61, D61 3, is preserved in a park in Rumoi, Hokkaido.

See also
 Japan Railways locomotive numbering and classification

References

Steam locomotives of Japan
1067 mm gauge locomotives of Japan
2-8-4 locomotives
Railway locomotives introduced in 1960
1′D2′ h2 locomotives
Rebuilt locomotives
JNR Class D50. The Class D50 is a type of 2-8-2 steam locomotive built by the Japanese Government Railways (JGR), the Japanese National Railways (JNR) and various manufacturers from 1923 to 1931. The class name indicates that the locomotive has four sets of driving wheels (D) and belongs to one of the classes of tender locomotive allocated a number in the series 50 to 99 in the Japan Railways locomotive numbering and classification scheme of 1928. Hideo Shima designed the rest of the class until 1931. 

The design of the D50 was based on the JNR Class 9600 which was introduced in 1916. A total of 380 Class D50 locomotives were built. Between 1951 and 1956 78 were rebuilt to JNR Class D60 2-8-4 Berkshire’s by the JNR. This class would later form the JNR Class D51.

Service in China

Manchukuo National Railway

In 1923, sixteen D50 class locomotives were exported to the Jichang Jidun Railway in Manchuria, which designated them class 500 and numbered 501 through 516. Ten were built by Kawasaki (works nos. 970−971, 1140−1170) and six by Kisha Seizō (w/n 965−970), and though very similar to the Japanese D50 class, there were some slight differences in dimensions due to the larger loading gauge on Chinese lines. After the establishment of Manchukuo, the Jichang Jidun Railway was nationalised along with other private railways to form the Manchukuo National Railway. The MNR classified these Mikana (ミカナ) class, numbered 6540−6555, renumbered 501−516 in 1938. After the establishment of the People's Republic of China, China Railways designated them ㄇㄎ5 (MK5) class in 1951, and subsequently 解放5 (JF5) class in 1959.

Central China Railway
In 1939, D50 193 was converted to standard gauge and shipped to the Central China Railway, where it operated primarily between Nanjing and Shanghai. This engine lasted in service on China Railways until 1955.

China Railways
After the establishment of the People's Republic of China, all the railways of China were taken over by the China Railway, which classified the D50s as ㄇㄎ16 (MK16) class in 1951, later becoming class 解放16(JF16).

Preserved examples
Two D50s are preserved in Japan.
 D50 25: In a park in Kitami, Hokkaido
 D50 140: At the Kyoto Railway Museum

See also
 Japan Railways locomotive numbering and classification
JNR Class 9600
JNR Class D51
JNR Class D52
JNR Class D60
JNR Class D61
JNR Class D62

References

1067 mm gauge locomotives of Japan
Steam locomotives of Japan
Steam locomotives of China
Standard gauge locomotives of China
2-8-2 locomotives
Hitachi locomotives
Kawasaki locomotives
Preserved steam locomotives of Japan
Railway locomotives introduced in 1923
1′D1′ h2 locomotives
Freight locomotives
JNR Class E10. The  was a class of  steam locomotives built for the Japanese Government Railways (JGR) in 1948 and designed by Hideo Shima. They were numbered E10 1-E10 5.

Following the end of World War II the JGR was prohibited by GHQ from building new locomotives due to financial difficulties. However, an exception was granted for the E10s to replace the ageing JNR Class 4110 locomotives because it was not possible to substitute existing locomotives on the steep gradients of the Ōu Main Line where they were used. 

The E10 boiler was a unique design based on the JNR Class D52 with the fire grate area reduced by .

Five locomotives were built by Kisha Seizo in 1948. They were the last steam locomotives built for Japanese National Railways. The last examples were withdrawn in 1962.

Preserved examples
One E10, E10 2, was preserved at Ome Railway Park in Ōme, Tokyo.

See also
 Japan Railways locomotive numbering and classification

References

2-10-4 locomotives
Steam locomotives of Japan
1067 mm gauge locomotives of Japan
Preserved steam locomotives of Japan
Railway locomotives introduced in 1948
Freight locomotives
Gmsh. Gmsh is a finite-element mesh generator developed by Christophe Geuzaine and Jean-François Remacle. Released under the GNU General Public License, Gmsh is free software.

Gmsh contains 4 modules: for geometry description, meshing, solving and post-processing. Gmsh supports parametric input and has advanced visualization mechanisms. Since version 3.0, Gmsh supports full constructive solid geometry features, based on Open Cascade Technology.

A modified version of Gmsh is integrated with SwiftComp, a general-purpose multiscale modeling software. The modified version, called Gmsh4SC, is compiled and deployed on the Composites Design and Manufacturing HUB (cdmHUB).

Interfaces 

Various graphical user interfaces exist that integrate Gmsh into their workflow:
 A Matlab interface available with FEATool Multiphysics.
 The Mesh and FEM Workbenches of FreeCAD support Gmsh for meshing inside the program, along with other meshers like Netgen.

See also

 TetGen
 Salome (software)

References

External links
Gmsh website
Official Gmsh Documentation
Gmsh Tutorials by Dolfyn 
Gmsh Matlab and FEATool GUI and CLI integration

Free mathematics software
Free software programmed in C++
Cross-platform free software
Mesh generators
Numerical analysis software for Linux
Numerical analysis software for macOS
Numerical analysis software for Windows
Software that uses FLTK
Computer-aided engineering software for Linux
Nelson Aircraft. The Nelson Aircraft Corporation was founded in 1945 by sailplane pilot Ted Nelson and sailplane designer William Hawley Bowlus in San Fernando, California.

Bowlus and Nelson formed the Nelson Aircraft Corporation to build a two-seat, motor glider version of the popular Bowlus BA-100 Baby Albatross. The designers nicknamed this design the Bumblebee but they sold the powered glider under the official moniker, Dragonfly.

Designs

The first Nelson-Bowlus glider was the Nelson Bumblebee with a pod-and-boom fuselage two-seat powered sailplane [NX1955]. The Bumblebee in 1945-46 was built with a Righter O-45 16-hp four-cylinder engine. The prototype Bumblebee had a fully retractable tricycle landing gear, operated manually by the pilot. The nose gear was steerable with miniature shimmy dampeners and a lock. The rear wheels had a special cam action so that they could be tucked away in the fuselage at the proper angle. The rear wheels also had independent internally expanding brakes, designed by Bowlus, which facilitated taxiing on the ground. The high pitch sound of the engine caused Bowlus and Nelson to name it the "Bumblebee." A three-gallon gas tank fed the pusher type engine allowing it to fly for an hour and a half under full throttle, cruising at 75 mph. Tests were made which determined the engine was under-powered, producing about 16 horsepower at 3500 rpm, not enough for adequate flight, although Bowlus claimed it would climb 300 feet per minute to an altitude suitable for soaring. The men decided to build a suitable engine of their own design from scratch that was used for the later production models. Their new motor generated 25 horsepower, just enough power for takeoff and a slow climb.

Nelson Aircraft then developed their own 25-28 hp four-cylinder, two-stroke H-44 and H-49 engines. These engines were used for a limited production version of the BB-1 Bumblebee called the BB-1 Dragonfly.

The experimental Nelson Bumblebee was a strut-braced, high wing, Bowlus Baby Albatross glider design which was altered by widening the cockpit and adding a plexiglass bubble to improve visibility. The Nelson Dragonfly version added vertical stabilizers mounted on the ends of the horizontal stabilizer. The motorglider had side-by-side seating with flight controls for each occupant.

Aircraft

Engines

References

Defunct aircraft engine manufacturers of the United States
MacBASIC. MacBASIC was a programming language and interactive environment designed by Apple Computer for the original Macintosh computer. It was developed by original Macintosh team member Donn Denman, with help from fellow Apple programmers Marianne Hsiung, Larry Kenyon, and Bryan Stearns, as part of the original Macintosh development effort starting in late 1981. Andy Hertzfeld said, "A BASIC interpreter would be important, to allow users to write their own programs. We decided we should write it ourselves, instead of relying on a third party, because it was important for the BASIC programs to be able to take advantage of the Macintosh UI, and we didn't trust a third party to 'get it' enough to do it right."

MacBASIC was released as beta software in 1985, and was adopted for use in places such as the Dartmouth College computer science department, for use in an introductory programming course. In August 1985, Apple abruptly ended the project, annoying book publishers that had published three books on the language with cooperation from the company. Apple discontinued MacBASIC part of a deal with Microsoft to extend the license for Applesoft BASIC on the Apple II.  Although Apple retracted MacBASIC, unlicensed copies of the software and manual still circulated, but because MacBASIC was no longer supported by Apple and was not designed to be 32-bit clean, interest eventually died out.

Benchmarks published in Washington Apple Pi Journal suggested that MacBASIC had better performance as compared to Microsoft's MS BASIC for Macintosh. The language included modern looping control structures, user-defined functions, graphics, and access to the Macintosh Toolbox. The development environment supported multiple programs running simultaneously with symbolic debugging including breakpoints and single-step execution.

References

BASIC programming language
Classic Mac OS-only software made by Apple Inc.
Discontinued BASICs
Classic Mac OS programming tools
1985 software